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$402+ 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 4/15. Fares are subject to change and may not be available on all flights or dates of travel.
LON — PDX
Mar 5 — Mar 121
Thu 3/5
Thu 3/12
1 adult, Economy
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Find cheap flights from London to Portland with Cheapflights

1. Tell us where you want to go

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Cheapflights Tip: The best prices from London to Portland are usually found in September or February, booked 35 days in advance, depart on a Saturday or Thursday and return on a Sunday

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 February 3, 2026.

This Trip.com deal was found by Cheapflights users on 2/1. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/136:40 am
LHR
-
PDX
2 stops18h 20m
Multiple Airlines
Tue 4/213:30 pm
PDX
-
LHR
2 stops21h 50m
Multiple Airlines
Deal found 2/1$607
This The Travel House deal was found by Cheapflights users on 2/1. 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.
Fri 3/611:55 am
LGW
-
PDX
1 stop13h 05m
Icelandair
Mon 3/93:45 pm
PDX
-
LGW
1 stop12h 10m
Icelandair
Deal found 2/1$615
This The Travel House deal was found by Cheapflights users on 2/1. 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.
Sat 3/148:35 pm
LHR
-
PDX
1 stop28h 25m
Icelandair
Tue 4/213:30 pm
PDX
-
LHR
1 stop12h 25m
Icelandair
Deal found 2/1$621
This Flightnetwork deal was found by Cheapflights users on 2/2. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/811:55 am
LGW
-
PDX
1 stop13h 05m
Icelandair
Mon 3/163:45 pm
PDX
-
LGW
1 stop12h 10m
Icelandair
Deal found 2/2$625
This Trip.com deal was found by Cheapflights users on 2/1. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/1311:55 am
LGW
-
PDX
1 stop13h 05m
Icelandair
Tue 4/213:30 pm
PDX
-
LGW
1 stop15h 10m
Icelandair
Deal found 2/1$646
This Flightnetwork deal was found by Cheapflights users on 2/2. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/88:35 pm
LHR
-
PDX
1 stop28h 25m
Icelandair
Mon 3/163:45 pm
PDX
-
LHR
1 stop12h 05m
Icelandair
Deal found 2/2$651
This The Travel House deal was found by Cheapflights users on 2/1. 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.
Fri 3/612:15 pm
LHR
-
PDX
1 stop12h 45m
Icelandair
Mon 3/93:45 pm
PDX
-
LHR
1 stop12h 05m
Icelandair
Deal found 2/1$660
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 3/58:35 pm
LHR
-
PDX
1 stop28h 25m
Icelandair
Tue 3/103:45 pm
PDX
-
LHR
1 stop12h 05m
Icelandair
Deal found 2/2$680
This Icelandair deal was found by Cheapflights users on 2/2. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/58:35 pm
LHR
-
PDX
1 stop28h 25m
Icelandair
Mon 3/93:45 pm
PDX
-
LHR
1 stop12h 05m
Icelandair
Deal found 2/2$682
This Trip.com deal was found by Cheapflights users on 2/1. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/81:05 pm
LHR
-
PDX
1 stop12h 55m
Icelandair
Fri 5/227:05 pm
PDX
-
LHR
1 stop17h 15m
Icelandair
Deal found 2/1$702
This Kiwi.com deal was found by Cheapflights users on 2/2. 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.
Mon 3/211:20 am
LHR
-
PDX
1 stop18h 03m
Multiple Airlines
Mon 3/910:08 am
PDX
-
LHR
1 stop17h 47m
Multiple Airlines
Deal found 2/2$707
This Trip.com deal was found by Cheapflights users on 2/1. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/37:30 am
LHR
-
PDX
2 stops21h 19m
Multiple Airlines
Tue 3/1010:39 am
PDX
-
LHR
1 stop17h 26m
Multiple Airlines
Deal found 2/1$715

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 February 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$607
(Trip.com)

One-way from

$402
(Kiwi.com)

Popular in

July

Cheapest in

September

Average price

$768

Good round-trip deal

$788 or less

Good one-way deal

$700 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 ($134 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
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.
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 February 3, 2026.
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

Sun 3/8

8:35 pm-6:00 pm

1 stop28h 25m

Portland

Mon 3/16

3:45 pm-10:50 am

1 stop12h 05m

$651

LondonPortland

LGW - PDX

LGWPDX

London Gatwick

Fri 3/6

11:55 am-5:00 pm

1 stop13h 05m

Portland

Tue 3/10

3:45 pm-10:55 am

1 stop12h 10m

$655

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Tue 3/17

8:35 pm-6:00 pm

1 stop28h 25m

Portland

Tue 3/31

3:30 pm-8:20 pm

1 stop20h 50m

$660

LondonPortland

LGW - PDX

LGWPDX

London Gatwick

Mon 3/16

11:55 am-6:00 pm

1 stop13h 05m

Portland

Mon 3/30

3:30 pm-2:40 pm

1 stop15h 10m

$735

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Tue 3/17

1:30 pm-12:35 am

2 stops18h 05m

Portland

Tue 3/31

1:39 pm-11:10 am

1 stop13h 31m

$796

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Wed 3/4

7:30 am-5:51 pm

2 stops18h 21m

Portland

Wed 3/11

8:30 am-7:55 am

2 stops16h 25m

$815

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Mon 3/2

1:30 pm-12:34 am

2 stops19h 04m

Portland

Tue 3/10

7:00 am-7:55 am

1 stop17h 55m

$815

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Mon 3/2

1:30 pm-12:34 am

2 stops19h 04m

Portland

Wed 3/11

7:49 pm-12:00 pm

1 stop33h 11m

$815

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Wed 3/18

8:30 am-11:00 pm

2 stops21h 30m

Portland

Wed 3/25

1:00 pm-9:40 am

1 stop13h 40m

$816

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Wed 3/4

1:30 pm-12:34 am

2 stops19h 04m

Portland

Tue 3/10

3:40 pm-4:50 pm

2 stops18h 10m

$822

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/2

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 February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
eDreamsPrice Accuracy3 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 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 January 30, 2026.

To ensure you get the cheapest price possible for a flight from London to Portland, you should look to book at least 35 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.

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

How often are flights from London to Portland delayed?

About 20% of weekly flights between London and Portland have experienced delays in the past year, with the average delay time being 115 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?

Friday 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 20% 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
Our travel experts
Brandon Schultz

Brandon Schultz

Expert on PDX

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

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 February 3, 2026.
Read reviews from past customers who have flown American Airlines, Icelandair, 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
11,218 reviews

Comfort

7.2

Overall

7.2

Boarding

7.5

Crew

8.0

Entertainment

6.9

Food

6.4

Reviews

1 / 20
2.0
Mediocre

Susie,Jan 2026

CLT - TPA

This flight was delayed 3 or 4 times. We had boarded the plane, sat on plane for a good 30 minutes, then we had to board the aircraft, walk to a different gate, wait and then board another aircraft. We arrived in Tampa 4 hours later than the original booking. I feel there should have been some sort of compensation especially for the advantage members.
American Airlines
7.2
Good
11,218 reviews
American Airlines
7.2
Good
11,218 reviews

Comfort

7.2

Overall

7.2

Boarding

7.5

Crew

8.0

Entertainment

6.9

Food

6.4

Reviews

1 / 20
2.0
Mediocre

Susie,Jan 2026

CLT - TPA

This flight was delayed 3 or 4 times. We had boarded the plane, sat on plane for a good 30 minutes, then we had to board the aircraft, walk to a different gate, wait and then board another aircraft. We arrived in Tampa 4 hours later than the original booking. I feel there should have been some sort of compensation especially for the advantage members.
Icelandair
7.1
Good
606 reviews
American Airlines
7.2
Good
11,218 reviews

Comfort

7.2

Overall

7.2

Boarding

7.5

Crew

8.0

Entertainment

6.9

Food

6.4

Reviews

1 / 20
2.0
Mediocre

Susie,Jan 2026

CLT - TPA

This flight was delayed 3 or 4 times. We had boarded the plane, sat on plane for a good 30 minutes, then we had to board the aircraft, walk to a different gate, wait and then board another aircraft. We arrived in Tampa 4 hours later than the original booking. I feel there should have been some sort of compensation especially for the advantage members.
British Airways
6.7
Okay
7,712 reviews
American Airlines
7.2
Good
11,218 reviews

Comfort

7.2

Overall

7.2

Boarding

7.5

Crew

8.0

Entertainment

6.9

Food

6.4

Reviews

1 / 20
2.0
Mediocre

Susie,Jan 2026

CLT - TPA

This flight was delayed 3 or 4 times. We had boarded the plane, sat on plane for a good 30 minutes, then we had to board the aircraft, walk to a different gate, wait and then board another aircraft. We arrived in Tampa 4 hours later than the original booking. I feel there should have been some sort of compensation especially for the advantage members.

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. 3 airlines have flights to Portland from London on a regular basis.

  • How long is the flight from London to Portland?

    Icelandair, Lufthansa, and United Airlines can get you from London to Portland in just under 18h 05m. Your travel time can differ by up to 10h 20m. London and Portland are separated by a distance of 4896 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 20% 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 American Airlines. According to our data, you can fly for as low as $629. Users have also found prices from $632 and $633 on Icelandair and Finnair, 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 (90%), Alaska Airlines (90%), Aer Lingus( 90%).

  • What are the cheapest flights from London to Portland?

    Looking for the cheapest flight from London to Portland? While on average our users pay $1,003, our data indicates the cheapest price to be $573. The most popular route (London Heathrow - Portland), is priced around $651.

  • 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
Hillsboro
Troutdale
Cannon Beach
Long Beach
McMinnville
Tigard
The Dalles
Depoe Bay
Wilsonville
Stevenson
Tillamook
Pacific City
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 February 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$704Average$825FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$715Average$899FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$737Average$1,024FlexibilityNo cancel feeOn-time71%

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