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Cheap flights from London to Portland from £390

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 9/3. Fares are subject to change and may not be available on all flights or dates of travel.
LON — PDX
27 Feb — 6 Mar1
1 adult

The best prices from London to Portland are usually found in November or February, booked 63 days in advance, depart on a Tuesday or Wednesday and return on a Friday

Cheap flight deals from London to Portland

Discover tips and strategies to find the most affordable flight options for your journey from London (LON) to Portland (PDX). 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 February 2025.

Round-trip from

£541

One-way from

£390

Popular in

August

Cheapest in

November

Average price

£616

Good round-trip deal

£622 or less

Good one-way deal

£662 or less
20/3-30/3
  • 20/3-30/3
  • 2 total stops
  • 38h 09m total
  • London to Portland
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9/3
  • 9/3
  • 2 total stops
  • 36h 38m total
  • London to Portland
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (£91 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£19 potential savings vs. average return price).
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Average for round-trip flights in February 2025
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Price to beat on a round-trip flight from London (LON) to Portland.
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Price to beat on a one-way flight from London (LON) to Portland.
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Find flight deals from London to Portland

Cheapest flights from London to Portland
Explore the most affordable flight options available from London to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 February 2025.

Thu 20/310:10LHR - PDX
1 stop17h 18mMultiple Airlines
Sun 30/309:44PDX - LHR
1 stop20h 51mMultiple Airlines
Deal found 21/2£541
Fri 21/313:00LHR - PDX
1 stop12h 24mLufthansa
Sat 29/307:46PDX - LHR
1 stop15h 39mLufthansa
Deal found 21/2£542
Fri 21/309:30LHR - PDX
2 stops18h 30mUnited Airlines
Thu 27/313:00PDX - LHR
1 stop13h 40mUnited Airlines
Deal found 21/2£543
Tue 25/312:00LGW - PDX
1 stop29h 20mMultiple Airlines
Tue 1/406:35PDX - LGW
1 stop15h 45mMultiple Airlines
Deal found 21/2£545
Fri 21/315:00LHR - PDX
2 stops30h 44mAir Canada
Thu 3/406:00PDX - LHR
2 stops20h 00mAir Canada
Deal found 22/2£547
Tue 22/415:40LHR - PDX
Nonstop9h 55mAmerican Airlines
Tue 29/413:25PDX - LHR
1 stop13h 05mAmerican Airlines
Deal found 21/2£571
Tue 22/415:40LHR - PDX
Nonstop9h 55mBritish Airways
Tue 29/413:25PDX - LHR
1 stop14h 50mBritish Airways
Deal found 20/2£572
Mon 24/306:30LHR - PDX
2 stops19h 16mDelta
Mon 31/311:30PDX - LHR
2 stops15h 00mDelta
Deal found 21/2£576
Tue 17/613:00LGW - PDX
1 stop12h 55mIcelandair
Thu 26/615:20PDX - LGW
1 stop15h 20mIcelandair
Deal found 21/2£589
Fri 21/314:20LHR - PDX
Nonstop10h 15mFinnair
Thu 3/419:25PDX - LHR
Nonstop9h 35mFinnair
Deal found 22/2£601
Tue 22/417:10LCY - PDX
1 stop26h 10mVirgin Atlantic
Tue 29/415:10PDX - LCY
2 stops17h 30mVirgin Atlantic
Deal found 21/2£612
Wed 26/314:20LHR - PDX
Nonstop10h 15mIberia
Wed 2/419:25PDX - LHR
Nonstop9h 35mIberia
Deal found 21/2£613

Find flights from London to Portland within your budget

Customise your flight search to find flights from London to Portland 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 February 2025.

Fly from

London

Fly to

Portland

Route

Depart

Return

Price

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Thu 20/3

10:10-20:28

1 stop17h 18m

Portland

Sun 30/3

09:44-14:35

1 stop20h 51m

£541

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Fri 21/3

13:00-18:24

1 stop12h 24m

Portland

Sat 29/3

07:46-06:25

1 stop15h 39m

£542

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Fri 21/3

09:30-21:00

2 stops18h 30m

Portland

Thu 27/3

13:00-09:40

1 stop13h 40m

£543

LondonPortland

LGW - PDX

LGWPDX

London Gatwick

Tue 25/3

12:00-10:20

1 stop29h 20m

Portland

Tue 1/4

06:35-06:20

1 stop15h 45m

£545

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Fri 21/3

15:00-14:44

2 stops30h 44m

Portland

Thu 3/4

06:00-10:00

2 stops20h 00m

£547

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Tue 22/4

15:40-17:35

Nonstop9h 55m

Portland

Tue 29/4

13:25-10:30

1 stop13h 05m

£571

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Tue 22/4

15:40-17:35

Nonstop9h 55m

Portland

Tue 29/4

13:25-12:15

1 stop14h 50m

£572

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Mon 24/3

06:30-18:46

2 stops19h 16m

Portland

Mon 31/3

11:30-10:30

2 stops15h 00m

£576

LondonPortland

LGW - PDX

LGWPDX

London Gatwick

Tue 17/6

13:00-17:55

1 stop12h 55m

Portland

Thu 26/6

15:20-14:40

1 stop15h 20m

£589

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Fri 21/3

14:20-17:35

Nonstop10h 15m

Portland

Thu 3/4

07:35-06:25

1 stop14h 50m

£601

Flights are sorted by cheapest return flights first.

Deals found on 21/2

Showing 1-10 of 52 results
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Best time to book a flight from London to Portland

Have a flexible travel schedule? Discover the best time to fly to Portland from London 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 London to Portland

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

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

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

The best time to book flights from London to Portland is 63 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, January is the cheapest month in which you can book a flight from London to Portland (average of £736). Flying from London to Portland in July is currently the most expensive (average of £1,048). 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 LON to PDX?

Find hourly flight availability from London to Portland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 22 February 2025.

When flying from London to Portland, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 20% versus a flight in the afternoon.

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

Use this chart to determine the cheapest time to fly return from London to Portland. Price data was last updated on 20 October 2024.

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

Rainfall in Portland by month

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

In terms of precipitation, rainfall in Portland ranges from 18.0 - 142.0 inches per month. November is typically the wettest month, when rainfall can reach 142.0 mm. July is typically the driest time to visit Portland when rainfall is around 18.0 mm.

Temperature in Portland by month

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

If weather is an important factor for your trip to Portland, 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 21.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 5.0 C).

Reviews of airlines servicing Portland

Get insights into the airlines that provide service to Portland. 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 Portland. Reviews last updated 22 February 2025.
Peruse reviews from past customers who have flown with Delta, KLM and Finnair from London to Portland to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
8,212 reviews
Check prices

Crew

8.5

Food

7.3

Overall

8.0

Comfort

8.0

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very Good
8,212 reviews
Delta
8.0
Very Good
8,212 reviews
Check prices

Crew

8.5

Food

7.3

Overall

8.0

Comfort

8.0

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM
7.8
Good
1,330 reviews
Delta
8.0
Very Good
8,212 reviews
Check prices

Crew

8.5

Food

7.3

Overall

8.0

Comfort

8.0

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Finnair
7.6
Good
1,271 reviews
Delta
8.0
Very Good
8,212 reviews
Check prices

Crew

8.5

Food

7.3

Overall

8.0

Comfort

8.0

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

SWISS
7.5
Good
1,566 reviews
Delta
8.0
Very Good
8,212 reviews
Check prices

Crew

8.5

Food

7.3

Overall

8.0

Comfort

8.0

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Virgin Atlantic
7.5
Good
653 reviews
Delta
8.0
Very Good
8,212 reviews
Check prices

Crew

8.5

Food

7.3

Overall

8.0

Comfort

8.0

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from London to Portland. 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 into for flights to Portland from London?

    Most people fly into Portland (PDX) if they book a flight to Portland from London. On average, Portland has 3 inbound flights from London per day from 9 airlines. Portland is conveniently located just 6.0 mi from Portland’s city center.

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

    Currently priced at £542, Lufthansa will fly you from London to Portland and back. In addition to Lufthansa, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and Air Canada - these airlines can fly you to your destination from £543 and £564, respectively. Lufthansa is 23% cheaper than the average price of flights available within the next 90 days to this destination.

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

    For one-way options, check prices for WestJet. According to our data, you can fly for as low as £478. Users have also found prices from £604 and £613 on British Airways and Icelandair, respectively.

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

    The most popular route from London to Portland is London Heathrow - Portland. You may also consider London Gatwick - Portland or London City - Portland.

  • What are the most reliable airlines from London to Portland?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from London to Portland on time: American Airlines (78%), Alaska Airlines (78%), Finnair (78%).

  • What are the cheapest flights from London to Portland?

    While on average a flight from London to Portland is generally £963, our data shows the cheapest flight currently is £544. When looking at the most popular route, (London Heathrow - Portland), you can expect to pay £515 for that flight.

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

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

  • How can I find direct flights from London to Portland?

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

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

    Yes. Cheapflights offers flight deals from London to Portland 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 London to Portland?

    Currently, January is the cheapest month in which you can book a flight from London to Portland (average of £736). Flying from London to Portland in July is currently the most expensive (average of £1,048). 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

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Fly from London to Portland on these airlines

Choose from the following airlines for your flight from London to Portland. Flights are based on user searches made on Cheapflights and were last updated on 22 February 2025.
British Airways flights from London to Portland
Finnair flights from London to Portland
Virgin Atlantic flights from London to Portland

Top 9 airlines flying from London to Portland

Discover the top 9 airlines that operate flights from London to Portland. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 22 February 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£470Average£709FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
FinnairCheapest£520Average£665FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Air CanadaCheapest£522Average£593FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Virgin AtlanticCheapest£541Average£697FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
United AirlinesCheapest£546Average£650FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
British AirwaysCheapest£550Average£755FlexibilityNo cancel feeOn-time70%
Search British Airways flights
LufthansaCheapest£563Average£654FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
IberiaCheapest£569Average£836FlexibilityNo cancel feeOn-time77%
Search Iberia flights
KLMCheapest£582Average£717FlexibilityNo cancel feeOn-time75%
Search KLM flights

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 London to Portland?

Cheapflights helps you search for flights from London to Portland 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 London to Portland?

Cheapflights helps you find that perfect flight to Portland from London 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 London to Portland with no change fees?

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

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

Yes, Cheapflights offers price alerts on London to Portland 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.

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