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$488+ Cheap flights from London (LON) to Portland (PDX)

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 5/24. Fares are subject to change and may not be available on all flights or dates of travel.
LON — PDX
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
1 adult, Economy
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Cheapflights Tip: The best prices from London to Portland are usually found in March or February, booked 63 days in advance, depart on a Friday or Thursday and return on a Tuesday

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 March 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$696
(Gotogate)

One-way from

$488
(Mytrip)

Popular in

August

Cheapest in

March

Average price

$767

Good round-trip deal

$899 or less

Good one-way deal

$815 or less
Provider with most accurate pricing for London (LON)-Portland flight deals.
Search Deals
Provider most trusted by Cheapflights users for London (LON)-Portland flights.
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From London (LON) to Portland
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One-way flight from London (LON) to Portland
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($150 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($30 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2025
Search Deals
Price to beat on a round-trip flight from London (LON) to Portland.
Search Deals
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 March 28, 2025.

This Gotogate deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/76:00 amLHR - PDX
2 stops24h 36mMultiple Airlines
Wed 5/143:56 pmPDX - LHR
1 stop14h 14mMultiple Airlines
Deal found 3/27$696
This United Airlines deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/217:25 amLHR - PDX
2 stops23h 23mUnited Airlines
Sun 4/2711:59 pmPDX - LHR
1 stop22h 21mUnited Airlines
Deal found 3/27$699
This Mytrip deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/118:55 amLGW - PDX
2 stops35h 57mMultiple Airlines
Sun 5/183:20 pmPDX - LGW
1 stop15h 20mMultiple Airlines
Deal found 3/26$699
This The Travel House deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/216:30 amLHR - PDX
2 stops21h 39mLufthansa
Sun 4/2710:10 amPDX - LHR
2 stops17h 40mLufthansa
Deal found 3/27$707
This EaseMyTrip deal was found by Cheapflights users on 3/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure EaseMyTrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/171:00 pmLGW - PDX
1 stop12h 55mIcelandair
Thu 6/263:20 pmPDX - LGW
1 stop15h 20mIcelandair
Deal found 3/28$707
This TravelUp deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/2610:15 amLHR - PDX
2 stops16h 10mAir Canada
Sat 5/310:10 amPDX - LHR
2 stops15h 50mAir Canada
Deal found 3/26$710
This EaseMyTrip deal was found by Cheapflights users on 3/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure EaseMyTrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/179:25 pmLHR - PDX
1 stop28h 30mIcelandair
Thu 6/263:20 pmPDX - LHR
1 stop12h 35mIcelandair
Deal found 3/28$712
This Billigflug deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Billigflug is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/213:40 pmLHR - PDX
Nonstop9h 55mBritish Airways
Mon 5/57:25 pmPDX - LHR
Nonstop9h 35mBritish Airways
Deal found 3/27$734
This Finnair deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/213:40 pmLHR - PDX
Nonstop9h 55mFinnair
Mon 5/51:55 pmPDX - LHR
1 stop14h 50mFinnair
Deal found 3/27$738
This American Airlines deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/213:40 pmLHR - PDX
Nonstop9h 55mAmerican Airlines
Mon 5/57:25 pmPDX - LHR
Nonstop9h 35mAmerican Airlines
Deal found 3/27$748
This Cheapflightsfares deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/38:45 amLCY - PDX
2 stops22h 06mLufthansa
Sat 9/202:15 pmPDX - LCY
2 stops19h 00mLufthansa
Deal found 3/27$756
This Delta deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/216:30 amLHR - PDX
2 stops19h 01mDelta
Sat 4/2611:19 pmPDX - LHR
1 stop23h 26mDelta
Deal found 3/27$774

Cheapflights Fare Finder

Customize 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 2,558,603 searches. Data last updated March 28, 2025.
Use the filters below to find and compare flights from London to Portland that are best for you.

Fly from

London

Fly to

Portland

Route

Depart

Return

Price

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Wed 5/7

6:00 am-10:36 pm

2 stops24h 36m

Portland

Wed 5/14

3:56 pm-2:10 pm

1 stop14h 14m

$696

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Mon 4/21

7:25 am-10:48 pm

2 stops23h 23m

Portland

Sun 4/27

11:59 pm-6:20 am

1 stop22h 21m

$699

LondonPortland

LGW - PDX

LGWPDX

London Gatwick

Sun 5/11

8:55 am-12:52 pm

2 stops35h 57m

Portland

Sun 5/18

3:20 pm-2:40 pm

1 stop15h 20m

$699

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Mon 4/21

6:30 am-8:09 pm

2 stops21h 39m

Portland

Sun 4/27

10:10 am-11:50 am

2 stops17h 40m

$707

LondonPortland

LGW - PDX

LGWPDX

London Gatwick

Tue 6/17

1:00 pm-5:55 pm

1 stop12h 55m

Portland

Thu 6/26

3:20 pm-2:40 pm

1 stop15h 20m

$707

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Sat 4/26

10:15 am-6:25 pm

2 stops16h 10m

Portland

Sat 5/3

10:10 am-10:00 am

2 stops15h 50m

$710

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Tue 6/17

9:25 pm-5:55 pm

1 stop28h 30m

Portland

Thu 6/26

3:20 pm-11:55 am

1 stop12h 35m

$712

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Mon 4/21

3:40 pm-5:35 pm

Nonstop9h 55m

Portland

Mon 5/5

7:25 pm-1:00 pm

Nonstop9h 35m

$734

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Mon 4/21

3:40 pm-5:35 pm

Nonstop9h 55m

Portland

Mon 5/5

1:55 pm-12:45 pm

1 stop14h 50m

$738

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Mon 4/21

3:40 pm-5:35 pm

Nonstop9h 55m

Portland

Mon 5/5

7:25 pm-1:00 pm

Nonstop9h 35m

$748

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Showing 1-10 of 51 results
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Compare providers for flights from London to Portland

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from London to Portland in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust Score*2 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on London-Portland flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on London-Portland flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from London-Portland flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on London-Portland flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for London-Portland flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 round-trip 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.

Cheapflights Insights

Everything you need to know about your flight from London to Portland

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

Use this chart to determine the optimal time to book a round-trip flight from London to Portland. Price data was last updated on March 21, 2025.

To ensure you get the cheapest price possible for a flight from London to Portland, you should look to book at least 63 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, November is the cheapest month in which you can book a flight from London to Portland (average of $277). Flying from London to Portland in March is currently the most expensive (average of $370). 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 March 28, 2025.

It’s optimal to fly from London to Portland in the afternoon. By choosing this option you can save up to 11% on the cost of your flight, compared to a flight in the morning.

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 0.7 - 5.6 inches per month. November is typically the wettest month, when rainfall can reach 5.6 in. July is typically the driest time to visit Portland when rainfall is around 0.7 in.

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 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 41.0 F).

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 March 28, 2025.
Read through reviews of airlines operating flights from London to Portland, such as Delta, KLM and Finnair. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,897 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

8.0

Overall

8.0

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
7,897 reviews
Delta
8.0
Very good
7,897 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

8.0

Overall

8.0

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
1,321 reviews
Delta
8.0
Very good
7,897 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

8.0

Overall

8.0

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
1,267 reviews
Delta
8.0
Very good
7,897 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

8.0

Overall

8.0

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
1,570 reviews
Delta
8.0
Very good
7,897 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

8.0

Overall

8.0

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
Air France
7.4
Good
1,424 reviews
Delta
8.0
Very good
7,897 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

8.0

Overall

8.0

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?

    For a flight from London to Portland, you will be flying into Portland. Portland (PDX) is just 6.0 mi from the center of the city. Portland is the only Portland airport and it handles 0 inbound flights from London per day. 4 airlines have flights to Portland from London on a regular basis.

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

    Currently priced at $699, United Airlines will fly you from London to Portland and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Lufthansa and Icelandair - these airlines can fly you to your destination from $707 and $707, respectively. United Airlines is priced at 21% lower than the current average price of a flight leaving 3 months from now.

  • 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 $503. Users have also found prices from $603 and $697 on Icelandair and Lufthansa, respectively.

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

    While some choose either London Gatwick - Portland or London City - Portland, London Heathrow - Portland is the most popular route from London to Portland.

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

    Before booking your flight to Portland from London, check out the most reliable airlines to get you to your destination on time: American Airlines (67%), Alaska Airlines (67%), Aer Lingus( 67%).

  • What are the cheapest flights from London to Portland?

    Looking for the cheapest flight from London to Portland? While on average our users pay $1,620, our data indicates the cheapest price to be $754. The most popular route (London Heathrow - Portland), is priced around $566.

  • 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 vacation 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, November is the cheapest month in which you can book a flight from London to Portland (average of $277). Flying from London to Portland in March is currently the most expensive (average of $370). 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

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
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Longview

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Top 4 airlines flying from London to Portland

Discover the top 4 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 2,558,603 searches. Data last updated March 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$701Average$869FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$733Average$1,072FlexibilityNo cancel feeOn-time70%
IberiaCheapest$801Average$1,227FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$818Average$1,067FlexibilityNo cancel feeOn-time71%
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