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$413+ 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 3/30. Fares are subject to change and may not be available on all flights or dates of travel.
LON — PDX
Jan 14 — Jan 211
Wed 1/14
Wed 1/21
1 adult, Economy
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Find cheap flights from London to Portland with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

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Cheapflights Tip: The best prices from London to Portland are usually found in September or March, booked 53 days in advance, depart on a Monday or Saturday and return on a Tuesday

Cheap 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 December 15, 2025.

This KLM deal was found by Cheapflights users on 12/15. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:30 amLHR - PDX
1 stop12h 55mKLM
Fri 1/91:30 pmPDX - LHR
1 stop13h 00mKLM
Deal found 12/15$1,037
This United Airlines deal was found by Cheapflights users on 12/13. 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.
Wed 12/3110:25 amLHR - PDX
1 stop33h 33mUnited Airlines
Fri 1/97:45 amPDX - LHR
2 stops17h 55mUnited Airlines
Deal found 12/13$1,056
This Air Canada deal was found by Cheapflights users on 12/13. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/272:30 pmLHR - PDX
1 stop26h 45mAir Canada
Tue 1/69:50 amPDX - LHR
2 stops16h 20mAir Canada
Deal found 12/13$1,072
This Air Canada deal was found by Cheapflights users on 12/13. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/272:30 pmLHR - PDX
1 stop26h 45mAir Canada
Mon 1/511:55 pmPDX - LHR
2 stops22h 35mAir Canada
Deal found 12/13$1,083
This Delta deal was found by Cheapflights users on 12/15. 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.
Wed 12/316:30 amLHR - PDX
1 stop12h 55mDelta
Fri 1/910:00 amPDX - LHR
2 stops18h 05mDelta
Deal found 12/15$1,110
This Air Canada deal was found by Cheapflights users on 12/13. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/272:30 pmLHR - PDX
1 stop26h 45mAir Canada
Fri 1/97:00 pmPDX - LHR
1 stop32h 50mAir Canada
Deal found 12/13$1,112
This Air Canada deal was found by Cheapflights users on 12/13. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/272:30 pmLHR - PDX
1 stop26h 45mAir Canada
Sat 1/109:50 amPDX - LHR
2 stops17h 30mAir Canada
Deal found 12/13$1,119
This Air Canada deal was found by Cheapflights users on 12/13. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/273:00 pmLHR - PDX
2 stops26h 15mAir Canada
Wed 1/79:50 amPDX - LHR
2 stops16h 20mAir Canada
Deal found 12/13$1,166
This CheapOair deal was found by Cheapflights users on 12/15. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:35 amLHR - PDX
2 stops24h 11mMultiple Airlines
Fri 1/97:00 amPDX - LHR
2 stops16h 10mMultiple Airlines
Deal found 12/15$1,187
This Kiwi.com deal was found by Cheapflights users on 12/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/247:55 amLGW - PDX
2 stops37h 52mMultiple Airlines
Mon 1/52:45 pmPDX - LGW
1 stop12h 10mMultiple Airlines
Deal found 12/13$1,366
This Kiwi.com deal was found by Cheapflights users on 12/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/252:00 pmLGW - PDX
2 stops37h 50mMultiple Airlines
Mon 1/52:45 pmPDX - LGW
1 stop12h 10mMultiple Airlines
Deal found 12/13$1,374
This Kiwi.com deal was found by Cheapflights users on 12/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/238:00 amLGW - PDX
1 stop18h 00mMultiple Airlines
Sat 1/105:51 pmPDX - LGW
2 stops28h 09mMultiple Airlines
Deal found 12/13$1,379

Find 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 December 15, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$724
(Travcart)

One-way from

$413
(Kiwi.com)

Popular in

July

Cheapest in

September

Average price

$979

Good one-way deal

$687 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.
Search Deals
From London (LON) to Portland
Search Deals
One-way flight from London (LON) to Portland
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($131 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a one-way flight from London (LON) to Portland.
Search Deals

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 December 15, 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

LGW - PDX

LGWPDX

London Gatwick

Fri 3/6

11:55 am-5:00 pm

1 stop13h 05m

Portland

Sat 3/14

3:45 pm-10:55 am

1 stop12h 10m

$724

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Mon 4/27

1:05 pm-6:00 pm

1 stop12h 55m

Portland

Tue 5/5

3:30 pm-11:55 am

1 stop12h 25m

$739

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Tue 1/27

9:00 am-12:39 am

2 stops23h 39m

Portland

Tue 2/3

9:50 am-11:50 am

1 stop18h 00m

$792

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Wed 1/14

9:30 am-10:44 pm

2 stops21h 14m

Portland

Wed 1/21

8:30 am-7:55 am

2 stops15h 25m

$798

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Wed 1/21

6:35 am-6:10 pm

2 stops19h 35m

Portland

Sun 1/25

11:05 pm-9:20 pm

1 stop14h 15m

$807

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Tue 1/13

12:35 pm-8:27 pm

1 stop15h 52m

Portland

Sun 1/25

2:18 pm-6:50 am

1 stop32h 32m

$829

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Mon 1/12

10:05 am-6:51 pm

1 stop16h 46m

Portland

Sun 1/25

2:18 pm-6:50 am

1 stop32h 32m

$829

LondonPortland

LGW - PDX

LGWPDX

London Gatwick

Wed 1/14

6:40 pm-10:32 pm

2 stops35h 52m

Portland

Wed 1/21

10:47 am-5:50 pm

2 stops23h 03m

$834

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Thu 1/15

9:30 am-9:49 pm

2 stops20h 19m

Portland

Thu 1/22

8:30 am-11:15 am

2 stops18h 45m

$839

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Mon 4/27

3:40 pm-5:40 pm

Nonstop10h 00m

Portland

Tue 5/5

2:15 pm-12:10 pm

1 stop13h 55m

$840

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/13

Showing 1-10 of 60 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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
AranGrantPrice Accuracy2 starsTrust 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on London-Portland flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 December 12, 2025.

To ensure you get the cheapest price possible for a flight from London to Portland, you should look to book at least 53 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, December is the cheapest month in which you can book a flight from London to Portland (average of $590). Flying from London to Portland in July is currently the most expensive (average of $747). 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 December 15, 2025.

When flying from London to Portland, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost to fly round-trip from London to Portland?

How often are flights from London to Portland delayed?

About 21% of weekly flights between London and Portland have experienced delays in the past year, with the average delay time being 118 minutes.

What is the most punctual flight time for London to Portland flights?

Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Monday tends to have the lowest number of delays on this route, whereas Wednesday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on London to Portland flights?

Over the last year, British Airways have had the lowest number of delays on this route, with just 21% of flights being delayed.

The best insider tips for London to Portland flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your London to Portland trip
Airports
LHR

Heathrow's strict security means longer wait times. Ensure liquids are in one bag and remove suspicious items to avoid delays.

Read more about LHRBy Ramsey Qubein
PDX

Use the MAX light rail for a convenient 40-minute trip from PDX to downtown Portland. Trains run every 15 minutes.

Read more about PDXBy Brandon Schultz
Our travel experts
Brandon Schultz

Brandon Schultz

Expert on PDX

Brandon Schultz

Brandon Schultz

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on LHR

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

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 December 15, 2025.
Read reviews from past customers who have flown American Airlines and British Airways from London to Portland. 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.
American Airlines
7.2
Good
11,051 reviews

Boarding

7.5

Crew

8.0

Entertainment

6.9

Comfort

7.2

Overall

7.2

Food

6.5

Reviews

1 / 20
10.0
Excellent

Jeremy,Dec 2025

OKC - CLT

Was an okay flight. Had extra seat empty beside me so was able to stretch a bit
American Airlines
7.2
Good
11,051 reviews
American Airlines
7.2
Good
11,051 reviews

Boarding

7.5

Crew

8.0

Entertainment

6.9

Comfort

7.2

Overall

7.2

Food

6.5

Reviews

1 / 20
10.0
Excellent

Jeremy,Dec 2025

OKC - CLT

Was an okay flight. Had extra seat empty beside me so was able to stretch a bit
British Airways
6.7
Okay
7,575 reviews
American Airlines
7.2
Good
11,051 reviews

Boarding

7.5

Crew

8.0

Entertainment

6.9

Comfort

7.2

Overall

7.2

Food

6.5

Reviews

1 / 20
10.0
Excellent

Jeremy,Dec 2025

OKC - CLT

Was an okay flight. Had extra seat empty beside me so was able to stretch a bit

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 4 inbound flights from London per day. 3 airlines have flights to Portland from London on a regular basis.

  • How long is the flight from London to Portland?

    Icelandair, United Airlines, and SWISS can get you from London to Portland in just under 13h 05m. Your travel time can differ by up to 22h 47m. London and Portland are separated by a distance of 4921 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    Currently priced at $704, 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 British Airways and American Airlines - these airlines can fly you to your destination from $715 and $737, respectively. United Airlines is priced at 18% 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 Icelandair. According to our data, you can fly for as low as $582. Users have also found prices from $633 and $657 on Finnair 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 (58%), Alaska Airlines (58%), Finnair( 58%).

  • What are the cheapest flights from London to Portland?

    Looking for the cheapest flight from London to Portland? While on average our users pay $701, our data indicates the cheapest price to be $654. The most popular route (London Heathrow - Portland), is priced around $727.

  • 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, December is the cheapest month in which you can book a flight from London to Portland (average of $590). Flying from London to Portland in July is currently the most expensive (average of $747). 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 Portland?

Book flights to Portland if you plan to visit one of these locations
Vancouver
Seaside
Clackamas
Lincoln City
Longview
Lake Oswego
Beaverton
McMinnville
Hillsboro
Troutdale
Cannon Beach
Long Beach
Tigard
The Dalles
Depoe Bay
Stevenson
Wilsonville
Pacific City
Tillamook
Gresham

Browse thousands of different options on Cheapflights for your next trip

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Top 3 airlines flying from London to Portland

Discover the top 3 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 December 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$704Average$793FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$715Average$899FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$737Average$953FlexibilityNo cancel feeOn-time71%

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