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$412+ 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 3/8. Fares are subject to change and may not be available on all flights or dates of travel.
LON — PDX
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
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 Sunday

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 October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$705
(Flightnetwork)

One-way from

$412
(Kiwi.com)

Popular in

July

Cheapest in

September

Average price

$887

Good round-trip deal

$737 or less

Good one-way deal

$629 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 ($137 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 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.
Search Deals

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 October 30, 2025.

This Gotogate deal was found by Cheapflights users on 10/30. 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 11/1212:15 pmLHR - PDX
1 stop12h 45mIcelandair
Thu 11/202:45 pmPDX - LHR
1 stop12h 05mIcelandair
Deal found 10/30$711
This Gotogate deal was found by Cheapflights users on 10/29. 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.
Mon 11/1012:15 pmLHR - PDX
1 stop12h 45mIcelandair
Thu 11/132:45 pmPDX - LHR
1 stop12h 05mIcelandair
Deal found 10/29$713
This Gotogate deal was found by Cheapflights users on 10/30. 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.
Mon 11/1711:55 amLGW - PDX
1 stop13h 05mIcelandair
Mon 12/12:45 pmPDX - LGW
1 stop12h 10mIcelandair
Deal found 10/30$715
This Booking.com deal was found by Cheapflights users on 10/30. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1712:15 pmLHR - PDX
1 stop12h 45mIcelandair
Mon 12/12:45 pmPDX - LHR
1 stop20h 45mIcelandair
Deal found 10/30$719
This oojo deal was found by Cheapflights users on 10/28. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1012:15 pmLHR - PDX
1 stop12h 45mIcelandair
Tue 11/182:45 pmPDX - LHR
1 stop12h 05mIcelandair
Deal found 10/28$722
This oojo deal was found by Cheapflights users on 10/30. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1211:55 amLGW - PDX
1 stop13h 05mIcelandair
Thu 11/202:45 pmPDX - LGW
1 stop12h 10mIcelandair
Deal found 10/30$724
This oojo deal was found by Cheapflights users on 10/29. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1011:55 amLGW - PDX
1 stop13h 05mIcelandair
Thu 11/132:45 pmPDX - LGW
1 stop12h 10mIcelandair
Deal found 10/29$728
This Gotogate deal was found by Cheapflights users on 10/29. 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.
Mon 12/812:15 pmLHR - PDX
1 stop12h 45mIcelandair
Mon 12/152:45 pmPDX - LHR
1 stop20h 45mIcelandair
Deal found 10/29$735
This Justfly.com deal was found by Cheapflights users on 10/28. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1012:15 pmLHR - PDX
1 stop12h 45mIcelandair
Mon 11/172:45 pmPDX - LHR
1 stop12h 05mIcelandair
Deal found 10/28$739
This Justfly.com deal was found by Cheapflights users on 10/28. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/98:35 pmLHR - PDX
1 stop28h 25mIcelandair
Mon 11/172:45 pmPDX - LHR
1 stop12h 05mIcelandair
Deal found 10/28$740
This Gotogate deal was found by Cheapflights users on 10/28. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/278:35 pmLHR - PDX
1 stop28h 25mIcelandair
Thu 12/42:45 pmPDX - LHR
1 stop20h 45mIcelandair
Deal found 10/28$748
This oojo deal was found by Cheapflights users on 10/29. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/711:55 amLGW - PDX
1 stop13h 05mIcelandair
Mon 11/102:45 pmPDX - LGW
1 stop12h 10mIcelandair
Deal found 10/29$760

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 October 30, 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

Mon 11/17

11:55 am-5:00 pm

1 stop13h 05m

Portland

Mon 12/1

2:45 pm-10:55 am

1 stop12h 10m

$715

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Wed 11/26

12:15 pm-5:00 pm

1 stop12h 45m

Portland

Tue 12/2

2:45 pm-10:50 am

1 stop12h 05m

$761

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Wed 11/26

12:15 pm-5:00 pm

1 stop12h 45m

Portland

Mon 12/1

2:45 pm-10:50 am

1 stop12h 05m

$761

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Tue 11/25

8:35 pm-5:00 pm

1 stop28h 25m

Portland

Tue 12/2

2:45 pm-10:50 am

1 stop12h 05m

$762

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

$781

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Wed 12/10

7:30 am-6:06 pm

2 stops18h 36m

Portland

Thu 1/29

10:47 am-11:05 am

2 stops16h 18m

$782

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Mon 12/8

8:30 am-10:15 pm

2 stops21h 45m

Portland

Mon 12/15

7:00 am-5:55 am

1 stop14h 55m

$791

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Fri 3/6

12:15 pm-5:00 pm

1 stop12h 45m

Portland

Tue 3/10

3:45 pm-10:50 am

1 stop12h 05m

$794

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Mon 12/8

11:55 am-9:24 pm

1 stop17h 29m

Portland

Mon 12/15

5:45 pm-11:20 am

Nonstop9h 35m

$805

LondonPortland

LCY - PDX

LCYPDX

London City

Wed 12/10

9:50 am-12:37 am

2 stops22h 47m

Portland

Thu 1/29

7:00 am-12:55 pm

2 stops21h 55m

$806

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

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 October.
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 October 24, 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 $591). Flying from London to Portland in July is currently the most expensive (average of $751). 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 October 30, 2025.

It’s optimal to fly from London to Portland in the evening. By choosing this option you can save up to 27% on the cost of your flight, compared to a flight in the morning.

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

The best insider tips for London to Portland flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
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 October 30, 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
11,030 reviews

Comfort

7.2

Entertainment

6.9

Food

6.4

Overall

7.2

Boarding

7.5

Crew

8.0

Reviews

1 / 20
2.0
Mediocre

Nordia,Sep 2025

KIN - MIA

We were to land in Miami sometime after 3pm but couldn’t due to bad weather, we flew around for 2 hrs until we had to land in Forth Myers to refuel, we had to sit another 2 hrs at Forth Myers until given the clearance to refuel, we were hungry, thirsty and frustrated at that point. All the had on the flight to offer was a small plastic glass of water and a pack of biscoff, I requested a cup of tea and was told none was there. We were basically at another airport and not one of the staff could consider that the passengers might be hungry or thirsty being on a plane for around 8 hrs, which you weren’t prepared for, at least find some hot water on board.
American Airlines
7.2
Good
11,030 reviews
American Airlines
7.2
Good
11,030 reviews

Comfort

7.2

Entertainment

6.9

Food

6.4

Overall

7.2

Boarding

7.5

Crew

8.0

Reviews

1 / 20
2.0
Mediocre

Nordia,Sep 2025

KIN - MIA

We were to land in Miami sometime after 3pm but couldn’t due to bad weather, we flew around for 2 hrs until we had to land in Forth Myers to refuel, we had to sit another 2 hrs at Forth Myers until given the clearance to refuel, we were hungry, thirsty and frustrated at that point. All the had on the flight to offer was a small plastic glass of water and a pack of biscoff, I requested a cup of tea and was told none was there. We were basically at another airport and not one of the staff could consider that the passengers might be hungry or thirsty being on a plane for around 8 hrs, which you weren’t prepared for, at least find some hot water on board.
British Airways
6.7
Okay
7,487 reviews
American Airlines
7.2
Good
11,030 reviews

Comfort

7.2

Entertainment

6.9

Food

6.4

Overall

7.2

Boarding

7.5

Crew

8.0

Reviews

1 / 20
2.0
Mediocre

Nordia,Sep 2025

KIN - MIA

We were to land in Miami sometime after 3pm but couldn’t due to bad weather, we flew around for 2 hrs until we had to land in Forth Myers to refuel, we had to sit another 2 hrs at Forth Myers until given the clearance to refuel, we were hungry, thirsty and frustrated at that point. All the had on the flight to offer was a small plastic glass of water and a pack of biscoff, I requested a cup of tea and was told none was there. We were basically at another airport and not one of the staff could consider that the passengers might be hungry or thirsty being on a plane for around 8 hrs, which you weren’t prepared for, at least find some hot water on board.

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 2 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 Virgin Atlantic can get you from London to Portland in just under 13h 05m. Your travel time can differ by up to 6h 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 $707, 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 19% 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 $512. Users have also found prices from $558 and $560 on Delta and Virgin Atlantic, 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 (63%), Alaska Airlines (63%), Aer Lingus( 63%).

  • What are the cheapest flights from London to Portland?

    Looking for the cheapest flight from London to Portland? While on average our users pay $753, our data indicates the cheapest price to be $581. The most popular route (London Heathrow - Portland), is priced around $709.

  • 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 $591). Flying from London to Portland in July is currently the most expensive (average of $751). 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
Lake Oswego
Beaverton
McMinnville
Hillsboro
Cannon Beach
Long Beach
Longview
Tigard
The Dalles
Depoe Bay
Stevenson
Wilsonville
Pacific City
Gresham
Tillamook
Troutdale

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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$707Average$823FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$715Average$906FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$737Average$953FlexibilityNo cancel feeOn-time71%

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