What are the cheapest airlines flying from Portland to London round-trip?

Cheapflights users have booked flights from Portland to London round-trip from £486. Other airlines that can offer you cheap pricing are KLM, from £492, and Lufthansa, from £494. Iberia is 28% cheaper than the average price of flights available within the next 90 days to this destination.

What are the cheapest airlines to fly from Portland to London one-way?

£314 is the cheapest one-way deal found within the past few days, from Icelandair. You may also be able to find cheap deals on British Airways and United Airlines, with prices starting from £350 and £355, respectively.

What is the cheapest day to fly from Portland to London?

Travellers seeking maximum savings on their Portland to London flight should consider departing on Friday evenings when fares are most often at their lowest. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

What are the most popular routes from Portland to London?

When deciding which route to take from Portland to London consider Portland - London Heathrow, Portland - London Gatwick or Portland - London City as they are the most popular.

What are the cheapest flights from Portland to London?

Looking at all options, your cheapest flight can be booked for £297. While the most popular route (Portland - London Heathrow) can be booked for £482 on average our data indicates £834 when flying from Portland to London.

What are the most reliable airlines from Portland to London?

The top 3 most reliable airlines when flying from Portland to London are British Airways (91%), American Airlines (82%) and Alaska Airlines (82%).

What are the most popular airlines that fly from Portland to London?

The most popular airlines flying from Portland to London are American Airlines, British Airways and Icelandair. Something to consider prior to booking your flight.

What is the cheapest day to fly round-trip from Portland to London?

Friday flights are found to be more expensive to fly from Portland to London. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to London.

What is the cheapest month to fly from Portland to London?

November can be a great time to fly to London from Portland with a flight ticket averaging about £684. Cheapflights users have found deals in the month of November for as cheap as £400. The most expensive prices can be found in the month of June.

What airport do you fly from for flights from Portland to London?

For a flight from Portland to London, you will be flying from Portland. Portland (PDX) is just 6.0 mi from the center of the city. Portland is the only Portland airport and it handles 1 outbound flight to London per day. 5 airlines have flights to London from Portland on a regular basis.

Can I find deals for flights from Portland to London that include hotel bookings?

Yes. In addition to deals on Portland to London flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Portland to London?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to London.

Can I find deals for business class flights from Portland to London?

Yes. Cheapflights offers flight deals from Portland to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£196+ Flights from Portland to London

The best prices from Portland to London are usually found in November or January, booked 67 days in advance, depart on a Friday or Tuesday and return on a Tuesday

Cheap flight deals from Portland to London

Round-trip from	£482
One-way from	£196
Popular in	June
Cheapest in	November
Average price	£571
Good round-trip deal	£473 or less
Good one-way deal	£312 or less

SWISS
1/5-8/5
3 total stops
54h 25m total
Portland to London

Search Deals

1/4
2 total stops
31h 47m total
Portland to London

Search Deals

Highest demand for flights based on searches. 23% potential increase in price (£162 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease (£27 potential savings vs. average return price).

Search Deals

Average for round-trip flights in February 2025

Search Deals

Price to beat on a round-trip flight from Portland to London (LON).

Search Deals

Price to beat on a one-way flight from Portland to London (LON).

Search Deals

Find flight deals from Portland to London

Cheapest flights from Portland to London
Explore the most affordable flight options available from Portland to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 February 2025.

Thu 1/519:40PDX - LHR

1 stop33h 40mMultiple Airlines

Thu 8/506:00LHR - PDX

2 stops20h 45mMultiple Airlines

Deal found 20/2£482

Tue 11/307:35PDX - LHR

1 stop16h 45mIberia

Tue 18/308:20LHR - PDX

1 stop21h 40mIberia

Deal found 19/2£486

Sat 1/320:28PDX - LGW

1 stop30h 07mMultiple Airlines

Tue 11/312:00LGW - PDX

1 stop32h 38mMultiple Airlines

Deal found 19/2£489

Sun 20/415:10PDX - LHR

1 stop15h 05mKLM

Wed 30/406:30LHR - PDX

1 stop12h 50mKLM

Deal found 20/2£492

Mon 28/415:25PDX - LHR

1 stop13h 55mLufthansa

Tue 6/506:30LHR - PDX

2 stops20h 15mLufthansa

Deal found 20/2£494

Thu 6/313:39PDX - LHR

1 stop33h 46mUnited Airlines

Wed 19/313:00LHR - PDX

1 stop32h 44mUnited Airlines

Deal found 20/2£494

Wed 2/415:25PDX - LHR

1 stop13h 55mAir Canada

Wed 9/410:15LHR - PDX

2 stops19h 55mAir Canada

Deal found 20/2£495

Tue 23/919:25PDX - LHR

Nonstop9h 35mBritish Airways

Mon 29/919:10LHR - PDX

2 stops35h 48mBritish Airways

Deal found 20/2£501

Sun 30/306:00PDX - LHR

1 stop18h 00mFinnair

Tue 8/410:30LHR - PDX

1 stop16h 13mFinnair

Deal found 20/2£506

Fri 18/407:23PDX - LHR

1 stop22h 52mDelta

Sun 27/411:30LHR - PDX

2 stops20h 26mDelta

Deal found 20/2£507

Mon 24/1114:45PDX - LGW

1 stop12h 10mIcelandair

Fri 28/1111:55LGW - PDX

1 stop13h 05mIcelandair

Deal found 20/2£513

Sun 6/409:12PDX - LHR

1 stop21h 03mVirgin Atlantic

Sun 13/418:30LHR - PDX

1 stop13h 26mVirgin Atlantic

Deal found 20/2£530

Best flights from Portland to London
Discover carefully curated flight deals from Portland to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 21 February 2025.

Thu 1/519:40PDX - LHR

1 stop33h 40mMultiple Airlines

Thu 8/506:00LHR - PDX

2 stops20h 45mMultiple Airlines

Deal found 20/2£482

Tue 11/307:35PDX - LHR

1 stop16h 45mIberia

Tue 18/308:20LHR - PDX

1 stop21h 40mIberia

Deal found 19/2£486

Sun 20/415:10PDX - LHR

1 stop15h 05mKLM

Wed 30/406:30LHR - PDX

1 stop12h 50mKLM

Deal found 20/2£492

Mon 28/415:25PDX - LHR

1 stop13h 55mLufthansa

Tue 6/506:30LHR - PDX

2 stops20h 15mLufthansa

Deal found 20/2£494

Thu 6/313:39PDX - LHR

1 stop33h 46mUnited Airlines

Wed 19/313:00LHR - PDX

1 stop32h 44mUnited Airlines

Deal found 20/2£494

Wed 2/415:25PDX - LHR

1 stop13h 55mAir Canada

Wed 9/410:15LHR - PDX

2 stops19h 55mAir Canada

Deal found 20/2£495

Tue 18/307:35PDX - LHR

1 stop21h 30mBritish Airways

Tue 15/406:10LHR - PDX

2 stops24h 52mBritish Airways

Deal found 21/2£497

Sun 9/315:50PDX - LHR

1 stop16h 35mAmerican Airlines

Tue 18/314:20LHR - PDX

Nonstop10h 15mAmerican Airlines

Deal found 21/2£504

Sun 30/306:00PDX - LHR

1 stop18h 00mFinnair

Tue 8/410:30LHR - PDX

1 stop16h 13mFinnair

Deal found 20/2£506

Sun 30/306:35PDX - LHR

1 stop22h 35mDelta

Thu 10/409:00LHR - PDX

2 stops19h 48mDelta

Deal found 21/2£507

Wed 30/415:20PDX - LGW

1 stop12h 25mIcelandair

Thu 8/513:00LGW - PDX

1 stop12h 55mIcelandair

Deal found 19/2£522

Tue 4/309:45PDX - LHR

2 stops27h 55mScandinavian Airlines

Tue 11/306:40LHR - PDX

2 stops22h 52mScandinavian Airlines

Deal found 20/2£539

Direct flights from Portland to London
Explore direct flight options from Portland to London based on user searches, and compare prices and availability for your desired travel dates. Data last updated 21 February 2025.

Mon 28/419:25PDX - LHR

Nonstop9h 35mIberia

Tue 13/515:40LHR - PDX

Nonstop9h 55mIberia

Deal found 20/2£493

Tue 11/319:30PDX - LHR

Nonstop9h 40mAmerican Airlines

Tue 18/314:20LHR - PDX

Nonstop10h 15mAmerican Airlines

Deal found 19/2£500

Sun 9/319:30PDX - LHR

Nonstop9h 40mBritish Airways

Tue 18/314:20LHR - PDX

Nonstop10h 15mBritish Airways

Deal found 20/2£503

Sun 9/319:30PDX - LHR

Nonstop9h 40mFinnair

Tue 18/314:20LHR - PDX

Nonstop10h 15mFinnair

Deal found 21/2£559

Last-minute flights from Portland to London
Discover last-minute flight deals from Portland to London. Data last updated 21 February 2025 and is based on user searches.

Wed 26/210:10PDX - LHR

1 stop16h 00mLufthansa

Fri 7/309:30LHR - PDX

2 stops19h 40mLufthansa

Deal found 19/2£631

Wed 26/218:30PDX - LHR

Nonstop9h 40mBritish Airways

Fri 7/314:20LHR - PDX

Nonstop10h 15mBritish Airways

Deal found 19/2£690

Fri 28/207:00PDX - LHR

2 stops25h 00mMultiple Airlines

Mon 10/306:40LHR - PDX

2 stops22h 52mMultiple Airlines

Deal found 20/2£586

Fri 28/218:30PDX - LHR

Nonstop9h 40mFinnair

Fri 7/314:20LHR - PDX

Nonstop10h 15mFinnair

Deal found 21/2£665

Fri 28/211:00PDX - LGW

2 stops22h 50mSWISS

Mon 10/318:45LGW - PDX

2 stops35h 11mSWISS

Deal found 20/2£681

Fri 28/213:30PDX - LHR

1 stop12h 30mKLM

Sun 9/306:30LHR - PDX

1 stop12h 55mKLM

Deal found 21/2£700

Sat 1/320:28PDX - LGW

1 stop30h 07mMultiple Airlines

Tue 11/312:00LGW - PDX

1 stop32h 38mMultiple Airlines

Deal found 19/2£489

Sat 1/315:25PDX - LHR

1 stop34h 45mAir Canada

Tue 11/313:00LHR - PDX

1 stop32h 44mAir Canada

Deal found 19/2£634

Sun 2/318:30PDX - LHR

Nonstop9h 40mAmerican Airlines

Sat 15/312:30LHR - PDX

1 stop17h 08mAmerican Airlines

Deal found 20/2£682

Mon 3/313:00PDX - LHR

2 stops24h 40mScandinavian Airlines

Thu 13/306:40LHR - PDX

2 stops22h 52mScandinavian Airlines

Deal found 20/2£547

Mon 3/313:30PDX - LHR

1 stop12h 30mDelta

Tue 18/306:30LHR - PDX

1 stop12h 55mDelta

Deal found 20/2£621

Mon 3/323:58PDX - LHR

1 stop27h 17mUnited Airlines

Thu 13/313:00LHR - PDX

1 stop32h 44mUnited Airlines

Deal found 20/2£629

One-way flights from Portland to London
Search for one-way flight options from Portland to London. Find affordable one-way fares based on user searches. Data last updated 21 February 2025.

Tue 1/418:13PDX - LGW

2 stops31h 47mMultiple Airlines

Deal found 19/2£196

Tue 1/418:13PDX - LHR

3 stops33h 42mMultiple Airlines

Deal found 19/2£239

Sat 29/316:53PDX - STN

3 stops33h 47mMultiple Airlines

Deal found 19/2£266

Tue 1/409:59PDX - LTN

3 stops28h 11mMultiple Airlines

Deal found 19/2£291

Wed 14/515:20PDX - LHR

1 stop21h 00mIcelandair

Deal found 20/2£314

Wed 14/515:20PDX - LGW

1 stop12h 25mIcelandair

Deal found 20/2£314

Tue 1/409:59PDX - LCY

3 stops27h 41mMultiple Airlines

Deal found 19/2£330

Sun 30/319:25PDX - LHR

Nonstop9h 35mBritish Airways

Deal found 20/2£350

Sat 29/319:05PDX - LHR

1 stop34h 15mUnited Airlines

Deal found 20/2£355

Thu 27/306:00PDX - LHR

2 stops20h 20mAir Canada

Deal found 20/2£360

Wed 26/218:30PDX - LHR

Nonstop9h 40mIberia

Deal found 20/2£383

Sun 30/313:15PDX - LCY

1 stop12h 15mKLM

Deal found 20/2£383

Find flights from Portland to London within your budget

Fly from

Fly to

Route

Depart

Return

Price

PortlandLondon

PDX - LHR

PDXLHR

Portland

Thu 1/5

19:40-13:20

1 stop33h 40m

London Heathrow

Thu 8/5

06:00-18:45

2 stops20h 45m

£482

PortlandLondon

PDX - LHR

PDXLHR

Portland

Tue 11/3

07:35-07:20

1 stop16h 45m

London Heathrow

Tue 18/3

08:20-23:00

1 stop21h 40m

£486

PortlandLondon

PDX - LHR

PDXLHR

Portland

Sun 20/4

15:10-14:15

1 stop15h 05m

London Heathrow

Wed 30/4

06:30-11:20

1 stop12h 50m

£492

PortlandLondon

PDX - LHR

PDXLHR

Portland

Mon 28/4

15:25-13:20

1 stop13h 55m

London Heathrow

Tue 6/5

06:30-18:45

2 stops20h 15m

£494

PortlandLondon

PDX - LHR

PDXLHR

Portland

Thu 6/3

13:39-07:25

1 stop33h 46m

London Heathrow

Wed 19/3

13:00-14:44

1 stop32h 44m

£494

PortlandLondon

PDX - LHR

PDXLHR

Portland

Wed 2/4

15:25-13:20

1 stop13h 55m

London Heathrow

Wed 9/4

10:15-22:10

2 stops19h 55m

£495

PortlandLondon

PDX - LHR

PDXLHR

Portland

Tue 18/3

07:35-12:05

1 stop21h 30m

London Heathrow

Tue 15/4

06:10-23:02

2 stops24h 52m

£497

PortlandLondon

PDX - LTN

PDXLTN

Portland

Mon 7/4

11:15-22:15

3 stops27h 00m

London Luton

Wed 30/4

10:00-13:07

2 stops35h 07m

£498

PortlandLondon

PDX - LGW

PDXLGW

Portland

Mon 7/4

18:50-06:20

2 stops27h 30m

London Gatwick

Wed 30/4

09:45-13:07

2 stops35h 22m

£501

PortlandLondon

PDX - LHR

PDXLHR

Portland

Sun 9/3

15:50-15:25

1 stop16h 35m

London Heathrow

Tue 18/3

14:20-17:35

Nonstop10h 15m

£504

Flights are sorted by cheapest return flights first.

Deals found on 19/2

Showing 1-10 of 58 results

...

Best time to book a flight from Portland to London

Have a flexible travel schedule? Discover the best time to fly to London from Portland with our price prediction graph.

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Portland to London

Get recent, data-driven insights about flights from Portland to London including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Portland to London?

Booking 67 days in advance of your planned departure date is, on average, the best time to get cheap flights from Portland to London. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Portland to London?

Currently, January is the cheapest month in which you can book a flight from Portland to London (average of £112). Flying from Portland to London in August is currently the most expensive (average of £163). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from PDX to LON?

When flying from Portland to London, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 19% versus a flight at midday.

Rainfall in London by month

In terms of precipitation, rainfall in London ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London when rainfall is around 40.0 mm.

Temperature in London by month

If weather is an important factor for your trip to London, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

Reviews of airlines servicing London

Read reviews from past customers who have flown Delta, KLM and Finnair from Portland to London. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very Good

8,213 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta

8.0

Very Good

8,213 reviews

Delta

8.0

Very Good

8,213 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM

7.8

Good

1,331 reviews

Delta

8.0

Very Good

8,213 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Finnair

7.6

Good

1,273 reviews

Delta

8.0

Very Good

8,213 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

SWISS

7.5

Good

1,568 reviews

Delta

8.0

Very Good

8,213 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Virgin Atlantic

7.5

Good

654 reviews

Delta

8.0

Very Good

8,213 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

What airport do you fly from for flights from Portland to London?
For a flight from Portland to London, you will be flying from Portland. Portland (PDX) is just 6.0 mi from the center of the city. Portland is the only Portland airport and it handles 1 outbound flight to London per day. 5 airlines have flights to London from Portland on a regular basis.
What are the cheapest airlines flying from Portland to London round-trip?
Cheapflights users have booked flights from Portland to London round-trip from £486. Other airlines that can offer you cheap pricing are KLM, from £492, and Lufthansa, from £494. Iberia is 28% cheaper than the average price of flights available within the next 90 days to this destination.
What are the cheapest airlines to fly from Portland to London one-way?
£314 is the cheapest one-way deal found within the past few days, from Icelandair. You may also be able to find cheap deals on British Airways and United Airlines, with prices starting from £350 and £355, respectively.
What are the most popular routes from Portland to London?
When deciding which route to take from Portland to London consider Portland - London Heathrow, Portland - London Gatwick or Portland - London City as they are the most popular.
What are the most reliable airlines from Portland to London?
The top 3 most reliable airlines when flying from Portland to London are British Airways (91%), American Airlines (82%) and Alaska Airlines (82%).
What are the cheapest flights from Portland to London?
Looking at all options, your cheapest flight can be booked for £297. While the most popular route (Portland - London Heathrow) can be booked for £482 on average our data indicates £834 when flying from Portland to London.
Can I find deals for flights from Portland to London that include hotel bookings?
Yes. In addition to deals on Portland to London flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Portland to London?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to London.
Can I find deals for business class flights from Portland to London?
Yes. Cheapflights offers flight deals from Portland to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Portland to London?
Currently, January is the cheapest month in which you can book a flight from Portland to London (average of £112). Flying from Portland to London in August is currently the most expensive (average of £163). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Deal

Hounslow

Milton Keynes

Croydon

Gatwick

Slough

Luton

Ilford

Hayes

Eastbourne

Wembley

Southend-on-Sea

Ipswich

Winchester

Maidstone

Crawley

Southall

Watford

Dartford

Stansted

Browse thousands of different options on Cheapflights for your next trip

Top 5 airlines flying from Portland to London

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest£465	Average£2,554	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Virgin Atlantic	Cheapest£466	Average£608	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Iberia	Cheapest£483	Average£713	FlexibilityNo cancel fee	On-time77%	Search Iberia flights
American Airlines	Cheapest£509	Average£746	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
British Airways	Cheapest£575	Average£820	FlexibilityNo cancel fee	On-time70%	Search British Airways flights

Fly with Cheapflights

How does Cheapflights help users find flights from Portland to London?

When you search for this flight from Portland to London, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Portland to London?

Millions of users choose and trust Cheapflights to book the best flight deals from Portland to London for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Portland to London with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Portland to London, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Portland to London become cheaper?

Of course! You can now track prices for flights from Portland to London and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from Portland to London from £196

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/4. Fares are subject to change and may not be available on all flights or dates of travel.

The best prices from Portland to London are usually found in November or January, booked 67 days in advance, depart on a Friday or Tuesday and return on a Tuesday

Cheap flight deals from Portland to London

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Portland to London

Cheapest flights from Portland to LondonExplore the most affordable flight options available from Portland to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 February 2025.

Explore the most affordable flight options available from Portland to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 February 2025.

Find flights from Portland to London within your budget

Best time to book a flight from Portland to London

Have a flexible travel schedule? Discover the best time to fly to London from Portland with our price prediction graph.

Travel insights for flights from Portland to London

Get recent, data-driven insights about flights from Portland to London including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Portland to London?

Use this chart to determine the optimal time to book a return flight from Portland to London. Price data was last updated on 14 February 2025.

What is the cheapest month to book a flight from Portland to London?

What is the cheapest time of day to fly from PDX to LON?

Find hourly flight availability from Portland to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 21 February 2025.

Rainfall in London by month

Plan your trip to London by taking into account the average rainfall totals by month.

Temperature in London by month

Plan your trip to London by taking into account the average temperature totals by month.

Reviews of airlines servicing London

Read reviews from past customers who have flown Delta, KLM and Finnair from Portland to London. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Portland to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly from for flights from Portland to London?

What are the cheapest airlines flying from Portland to London round-trip?

What are the cheapest airlines to fly from Portland to London one-way?

What are the most popular routes from Portland to London?

What are the most reliable airlines from Portland to London?

What are the cheapest flights from Portland to London?

Can I find deals for flights from Portland to London that include hotel bookings?

How can I find direct flights from Portland to London?

Can I find deals for business class flights from Portland to London?

What is the cheapest month to book a flight from Portland to London?

Travelling to a place near Portland?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Portland to London

See prices for flight routes from nearby airports that may be better suited for you.

Top 5 airlines flying from Portland to London

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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Cheapest flights from Portland to London
Explore the most affordable flight options available from Portland to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 February 2025.