Find flights
When to book
Airlines
FAQs

Cheap flights from Portland, Maine to London from £596

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 20/1. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — LON
27 Dec — 3 Jan1
1 adult

Cheap flight deals from Portland to London

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PWM) to London (LON). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 22 December 2024.

Round-trip from

£596

Popular in

July

Cheapest in

February

Average price

£589
Austrian Airlines
  • Austrian Airlines
  • 20/1-27/1
  • 4 total stops
  • 52h 15m total
  • Portland to London
Search Deals
High demand for flights, 24% potential price rise
Search Deals
Best time to find cheap flights, 4% potential price drop
Search Deals
Average for round-trip flights in December 2024
Search Deals

Find flight deals from Portland to London

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 22 December 2024.

Mon 20/106:00PWM - LHR
2 stops20h 10mMultiple Airlines
Mon 27/119:25LHR - PWM
2 stops32h 05mMultiple Airlines
Deal found 20/12£596
Tue 21/118:05PWM - LHR
1 stop11h 10mUnited Airlines
Tue 28/115:00LHR - PWM
2 stops28h 42mUnited Airlines
Deal found 21/12£597
Wed 22/105:34PWM - LHR
1 stop21h 21mVirgin Atlantic
Wed 29/112:30LHR - PWM
1 stop16h 21mVirgin Atlantic
Deal found 21/12£615
Mon 20/115:02PWM - LHR
1 stop14h 28mDelta
Mon 27/117:35LHR - PWM
2 stops25h 47mDelta
Deal found 20/12£617
Tue 18/215:04PWM - LHR
2 stops25h 36mScandinavian Airlines
Mon 24/206:40LHR - PWM
3 stops22h 16mScandinavian Airlines
Deal found 22/12£646
Fri 18/415:28PWM - LHR
2 stops37h 32mAir Canada
Sat 26/415:50LHR - PWM
2 stops36h 37mAir Canada
Deal found 21/12£780
Mon 27/112:48PWM - LHR
1 stop15h 32mAmerican Airlines
Sat 1/208:50LHR - PWM
2 stops16h 21mAmerican Airlines
Deal found 21/12£1,346
Wed 22/115:02PWM - LCY
2 stops13h 28mDelta
Wed 29/110:00LCY - PWM
2 stops18h 51mDelta
Deal found 21/12£924
Wed 22/111:36PWM - LGW
2 stops17h 14mMultiple Airlines
Wed 29/110:40LGW - PWM
3 stops28h 52mMultiple Airlines
Deal found 21/12£1,519

Find flights from Portland to London within your budget

Customise your flight search to find flights from Portland to London that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 22 December 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

PortlandLondon

PWM - LHR

PWMLHR

Portland

Mon 20/1

06:00-07:10

2 stops20h 10m

London Heathrow

Mon 27/1

19:25-22:30

2 stops32h 05m

£596

PortlandLondon

PWM - LHR

PWMLHR

Portland

Tue 21/1

18:05-10:15

1 stop11h 10m

London Heathrow

Tue 28/1

15:00-14:42

2 stops28h 42m

£597

PortlandLondon

PWM - LHR

PWMLHR

Portland

Wed 22/1

11:36-11:50

3 stops19h 14m

London Heathrow

Wed 29/1

06:50-22:30

3 stops20h 40m

£611

PortlandLondon

PWM - LHR

PWMLHR

Portland

Wed 22/1

05:34-07:55

1 stop21h 21m

London Heathrow

Wed 29/1

12:30-23:51

1 stop16h 21m

£615

PortlandLondon

PWM - LHR

PWMLHR

Portland

Mon 20/1

15:02-10:30

1 stop14h 28m

London Heathrow

Mon 27/1

17:35-14:22

2 stops25h 47m

£617

PortlandLondon

PWM - LHR

PWMLHR

Portland

Tue 18/2

15:04-21:40

2 stops25h 36m

London Heathrow

Mon 24/2

06:40-23:56

3 stops22h 16m

£646

PortlandLondon

PWM - LCY

PWMLCY

Portland

Wed 22/1

15:02-09:30

2 stops13h 28m

London City

Wed 29/1

10:00-23:51

2 stops18h 51m

£924

PortlandLondon

PWM - LHR

PWMLHR

Portland

Mon 27/1

12:48-09:20

1 stop15h 32m

London Heathrow

Sat 1/2

08:50-20:11

2 stops16h 21m

£1,346

PortlandLondon

PWM - LGW

PWMLGW

Portland

Wed 22/1

11:36-09:50

2 stops17h 14m

London Gatwick

Wed 29/1

10:40-10:32

3 stops28h 52m

£1,519

Flights are sorted by cheapest return flights first.

Deals found on 20/12

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.

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

Currently, January is the cheapest month in which you can book a flight from Portland, Maine to London (average of £112). Flying from Portland, Maine to London in July is currently the most expensive (average of £160). 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.

Rainfall in London by month

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

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

Get insights into the airlines that provide service to London. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to London. Reviews last updated 22 December 2024.
Delta
8.0
Very Good
8,594 reviews
Check prices

Overall

8.0

Food

7.3

Crew

8.6

Comfort

8.0

Entertainment

7.9

Boarding

8.2

Reviews

1 / 10

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

Delta
8.0
Very Good
8,594 reviews
Delta
8.0
Very Good
8,594 reviews
Check prices

Overall

8.0

Food

7.3

Crew

8.6

Comfort

8.0

Entertainment

7.9

Boarding

8.2

Reviews

1 / 10

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

Virgin Atlantic
7.5
Good
668 reviews
Delta
8.0
Very Good
8,594 reviews
Check prices

Overall

8.0

Food

7.3

Crew

8.6

Comfort

8.0

Entertainment

7.9

Boarding

8.2

Reviews

1 / 10

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

United Airlines
7.4
Good
9,028 reviews
Delta
8.0
Very Good
8,594 reviews
Check prices

Overall

8.0

Food

7.3

Crew

8.6

Comfort

8.0

Entertainment

7.9

Boarding

8.2

Reviews

1 / 10

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

Scandinavian Airlines
7.3
Good
1,314 reviews
Delta
8.0
Very Good
8,594 reviews
Check prices

Overall

8.0

Food

7.3

Crew

8.6

Comfort

8.0

Entertainment

7.9

Boarding

8.2

Reviews

1 / 10

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

American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very Good
8,594 reviews
Check prices

Overall

8.0

Food

7.3

Crew

8.6

Comfort

8.0

Entertainment

7.9

Boarding

8.2

Reviews

1 / 10

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

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?

    Portland (PWM) is the airport you will fly out of if you book a flight from Portland to London. You should not have trouble finding flights to London from Portland; the airport handles an average of 0 outbound flights to London per day. You should also have plenty of airline options to choose from since 0 airlines have flights from the Portland airport to London. It is only a 2.9 mi journey to Portland (PWM) from Portland’s city center.

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

    Cheapflights users have booked flights from Portland, Maine to London round-trip from £597. Other airlines that can offer you cheap pricing are Virgin Atlantic, from £615, and Delta, from £617. United Airlines is currently priced 12% below the average price you’ll pay for this route.

  • What are the most popular routes from Portland, Maine to London?

    The most popular flight routes from Portland, Maine to London are Portland - London Heathrow, Portland - London Gatwick and Portland - London City.

  • 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, Maine to London?

    Currently, January is the cheapest month in which you can book a flight from Portland, Maine to London (average of £112). Flying from Portland, Maine to London in July is currently the most expensive (average of £160). 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

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.

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.

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

Cheapflights helps you search for flights from Portland to London via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

Cheapflights helps you find that perfect flight to London from Portland by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

Certainly. Search results for flights to London from Portland shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Yes, Cheapflights offers price alerts on Portland to London flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
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.