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$611+ 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 10/2. Fares are subject to change and may not be available on all flights or dates of travel.
LON — PDX
oct. 15 — oct. 221
mié. 10/15
mié. 10/22
1 adult, Economy
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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

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 septiembre 15, 2025.

Round-trip from

$682
(Gotogate)

One-way from

$611
(Kiwi.com)

Popular in

July

Cheapest in

September

Average price

$747

Good one-way deal

$885 or less
From London (LON) to Portland
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One-way flight from London (LON) to Portland
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Highest demand for flights based on searches. 14% potential increase in price ($147 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($19 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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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 septiembre 15, 2025.

This Gotogate deal was found by Cheapflights users on 9/15. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/610:15 amLHR - PDX
2 stops16h 31mAir Canada
lun. 10/203:25 pmPDX - LHR
1 stop13h 55mAir Canada
Deal found 9/15$682
This Expedia deal was found by Cheapflights users on 9/15. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/2910:15 amLHR - PDX
2 stops16h 31mAir Canada
lun. 10/203:25 pmPDX - LHR
1 stop13h 55mAir Canada
Deal found 9/15$686
This Booking.com deal was found by Cheapflights users on 9/13. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/133:40 pmLGW - PDX
1 stop34h 15mIcelandair
lun. 10/203:20 pmPDX - LGW
1 stop15h 15mIcelandair
Deal found 9/13$707
This British Airways deal was found by Cheapflights users on 9/14. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/241:45 pmLHR - PDX
Nonstop10h 10mBritish Airways
lun. 12/15:45 pmPDX - LHR
Nonstop9h 35mBritish Airways
Deal found 9/14$710
This American Airlines deal was found by Cheapflights users on 9/14. 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.
lun. 10/63:40 pmLHR - PDX
Nonstop9h 55mAmerican Airlines
lun. 10/207:25 pmPDX - LHR
Nonstop9h 35mAmerican Airlines
Deal found 9/14$712
This American Airlines deal was found by Cheapflights users on 9/14. 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.
lun. 11/241:45 pmLHR - PDX
Nonstop10h 10mAmerican Airlines
dom. 11/305:45 pmPDX - LHR
Nonstop9h 35mAmerican Airlines
Deal found 9/14$714
This American Airlines deal was found by Cheapflights users on 9/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/91:45 pmLHR - PDX
Nonstop10h 10mAmerican Airlines
lun. 11/245:45 pmPDX - LHR
Nonstop9h 35mAmerican Airlines
Deal found 9/15$715
This Expedia deal was found by Cheapflights users on 9/14. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/612:00 pmLHR - PDX
1 stop17h 36mIberia
lun. 10/207:25 pmPDX - LHR
Nonstop9h 35mIberia
Deal found 9/14$716
This American Airlines deal was found by Cheapflights users on 9/14. 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.
jue. 10/93:10 pmLHR - PDX
1 stop15h 58mAmerican Airlines
mié. 10/157:25 pmPDX - LHR
Nonstop9h 35mAmerican Airlines
Deal found 9/14$724
This Air Canada deal was found by Cheapflights users on 9/14. 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.
dom. 9/2110:15 amLHR - PDX
2 stops20h 46mAir Canada
sáb. 10/116:15 amPDX - LHR
2 stops21h 35mAir Canada
Deal found 9/14$736
This Virgin Atlantic deal was found by Cheapflights users on 9/15. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/95:50 pmLCY - PDX
1 stop25h 35mVirgin Atlantic
lun. 11/241:25 pmPDX - LCY
1 stop12h 05mVirgin Atlantic
Deal found 9/15$737
This Virgin Atlantic deal was found by Cheapflights users on 9/15. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/68:40 amLCY - PDX
2 stops22h 00mVirgin Atlantic
lun. 10/201:15 pmPDX - LCY
1 stop20h 05mVirgin Atlantic
Deal found 9/15$743

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 septiembre 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

lun. 10/13

3:40 pm-5:55 pm

1 stop34h 15m

Portland

lun. 10/20

3:20 pm-2:35 pm

1 stop15h 15m

$707

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

lun. 10/6

3:40 pm-5:35 pm

Nonstop9h 55m

Portland

lun. 10/20

10:29 am-7:20 am

1 stop12h 51m

$712

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

lun. 11/24

1:45 pm-3:55 pm

Nonstop10h 10m

Portland

sáb. 11/29

12:59 am-6:50 am

1 stop21h 51m

$716

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

dom. 11/9

1:45 pm-3:55 pm

Nonstop10h 10m

Portland

lun. 11/24

2:16 pm-11:40 am

1 stop13h 24m

$720

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

mar. 3/3

2:30 pm-9:15 am

1 stop26h 45m

Portland

mié. 3/11

9:50 am-10:10 am

2 stops17h 20m

$736

LondonPortland

LCY - PDX

LCYPDX

London City

mar. 11/18

6:55 pm-11:25 am

1 stop24h 30m

Portland

mié. 12/3

1:25 pm-9:30 am

1 stop12h 05m

$737

LondonPortland

LCY - PDX

LCYPDX

London City

dom. 11/9

5:50 pm-11:25 am

1 stop25h 35m

Portland

lun. 11/24

1:25 pm-9:30 am

1 stop12h 05m

$737

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

vie. 3/6

1:45 pm-3:55 pm

Nonstop10h 10m

Portland

mar. 3/10

2:16 pm-11:40 am

1 stop14h 24m

$739

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

sáb. 10/18

2:10 pm-6:46 pm

1 stop12h 36m

Portland

mié. 10/22

6:15 am-1:20 pm

1 stop23h 05m

$740

LondonPortland

LCY - PDX

LCYPDX

London City

lun. 11/24

7:45 am-5:43 pm

2 stops17h 58m

Portland

mié. 12/3

1:25 pm-9:30 am

1 stop12h 05m

$743

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 60 results
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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

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 September 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, 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 $368). 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 septiembre 15, 2025.

It’s optimal to fly from London to Portland in the afternoon. By choosing this option you can save up to 21% on the cost of your flight, compared to a flight in the morning.

Weekly flight availability from London to Portland

Explore weekly flight availability from London to Portland. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated septiembre 15, 2025.

The most flights from LON to PDX are scheduled on a Monday (7 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (7 on average).

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

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 septiembre 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
10,000 reviews

Comfort

7.2

Entertainment

6.9

Food

6.4

Overall

7.2

Crew

8.0

Boarding

7.5

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
10,000 reviews
American Airlines
7.2
Good
10,000 reviews

Comfort

7.2

Entertainment

6.9

Food

6.4

Overall

7.2

Crew

8.0

Boarding

7.5

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
7,361 reviews
American Airlines
7.2
Good
10,000 reviews

Comfort

7.2

Entertainment

6.9

Food

6.4

Overall

7.2

Crew

8.0

Boarding

7.5

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 7 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, American Airlines, and Finnair can get you from London to Portland in just under 9h 55m. Your travel time can differ by up to 24h 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 $701, 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 $733 and $782, 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 Delta. According to our data, you can fly for as low as $613. Users have also found prices from $619 and $622 on WestJet 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 (60%), Alaska Airlines (60%), Aer Lingus( 60%).

  • What are the cheapest flights from London to Portland?

    Looking for the cheapest flight from London to Portland? While on average our users pay $1,453, our data indicates the cheapest price to be $659. The most popular route (London Heathrow - Portland), is priced around $627.

  • 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 $368). 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
Beaverton
Clackamas
McMinnville
Lake Oswego
Hillsboro
Cannon Beach
Long Beach
Longview
Lincoln City
Tigard
Depoe Bay
Stevenson
Wilsonville
Pacific City
Tillamook
Troutdale
Gresham
Silverton

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 septiembre 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$701Average$823FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$733Average$915FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$782Average$953FlexibilityNo cancel feeOn-time71%

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