How long is the flight from London to Portland?

Lufthansa, United Airlines, and SWISS can get you from London to Portland in just under 17h 56m. Your travel time can differ by up to 11h 19m. London and Portland are separated by a distance of 4908 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

What is the cheapest airline to fly from London to Portland round-trip?

Currently priced at $715, British Airways will fly you from London to Portland and back. In addition to British Airways, many other airlines offer competitively priced options for your trip. British Airways is priced at 29% 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 $562. Users have also found prices from $573 and $580 on British Airways and Finnair, respectively.

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

If weather is an important factor for your trip to Portland, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 41.0 F).

What are the most popular routes from London to Portland?

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

What are the cheapest flights from London to Portland?

Looking for the cheapest flight from London to Portland? While on average our users pay $1,778, our data indicates the cheapest price to be $548. The most popular route (London Heathrow - Portland), is priced around $773.

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 (82%), Alaska Airlines (82%), Aer Lingus( 82%).

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.

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. 1 airline has flights to Portland from London on a regular basis.

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.

$533+ Cheap Flights from London to Portland

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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”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

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Cheapflights Tip: The best prices from London to Portland are usually found in February or January, booked 2 days in advance, depart on a Wednesday or Tuesday and return on a Monday

Cheap flight deals from London to Portland

Cheapest

Best

Last-minute

One-way

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 August 25, 2026.

Tue 10/612:45 pm -

1 stop16h 05m

Tue 10/1310:48 am -

1 stop17h 17m

Deal found 8/21

$853

Wed 10/71:05 pm -

1 stop12h 50m

Wed 10/143:30 pm -

1 stop12h 25m

Deal found 8/23

$854

Tue 10/63:40 pm -

1 stop34h 15m

Mon 10/123:30 pm -

1 stop15h 10m

Deal found 8/20

$854

Fri 9/256:40 am -

2 stops21h 22m

Sat 10/312:34 pm -

2 stops25h 06m

Deal found 8/24

$855

Wed 10/76:10 am -

2 stops19h 45m

Wed 10/143:30 pm -

2 stops19h 55m

Deal found 8/23

$857

Thu 10/13:00 pm -

1 stop31h 46m

Wed 10/79:00 am -

2 stops17h 10m

Deal found 8/24

$858

Wed 10/77:00 am -

2 stops18h 55m

Wed 10/143:30 pm -

2 stops22h 10m

Deal found 8/23

$864

Tue 10/612:00 pm -

2 stops33h 07m

Mon 10/123:30 pm -

1 stop12h 25m

Deal found 8/21

$864

Thu 10/13:40 pm -

1 stop34h 15m

Wed 10/73:30 pm -

1 stop15h 10m

Deal found 8/24

$865

Thu 12/108:35 pm -

1 stop28h 25m

Mon 12/142:45 pm -

1 stop20h 45m

Deal found 8/24

$866

Mon 10/51:55 pm -

3 stops36h 00m

Mon 10/123:30 pm -

3 stops22h 05m

Deal found 8/21

$867

Tue 10/612:40 pm -

2 stops28h 51m

Mon 10/123:30 pm -

1 stop15h 10m

Deal found 8/20

$867

Best flights from London to Portland
Discover carefully curated flight deals from London to Portland that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 25, 2026.

Fri 10/96:30 am -

2 stops20h 41m

Fri 10/162:27 pm -

1 stop13h 28m

Deal found 8/24

$869

Mon 11/168:10 am -

2 stops16h 50m

Mon 11/302:45 pm -

2 stops16h 20m

Deal found 8/20

$897

Mon 9/282:50 pm -

2 stops29h 15m

Mon 12/217:10 pm -

1 stop32h 40m

Deal found 8/24

$903

Tue 10/67:05 am -

2 stops21h 45m

Tue 10/137:00 am -

3 stops25h 00m

Deal found 8/22

$933

Wed 10/76:00 am -

2 stops21h 11m

Wed 10/141:03 pm -

2 stops20h 47m

Deal found 8/20

$949

Mon 9/217:00 pm -

1 stop24h 10m

Mon 9/283:21 pm -

2 stops19h 09m

Deal found 8/21

$1,036

Wed 1/2711:55 am -

2 stops15h 55m

Sun 1/3112:00 pm -

2 stops14h 55m

Deal found 8/24

$1,142

Tue 12/15:20 pm -

2 stops37h 22m

Tue 12/81:04 pm -

2 stops36h 51m

Deal found 8/23

$1,669

Wed 1/277:40 am -

2 stops25h 14m

Sun 1/314:05 pm -

1 stop33h 35m

Deal found 8/20

$911

Mon 2/110:25 am -

2 stops18h 26m

Thu 2/111:59 pm -

2 stops21h 26m

Deal found 8/24

$935

Thu 12/106:40 am -

2 stops24h 00m

Mon 12/147:05 am -

2 stops26h 35m

Deal found 8/20

$941

Wed 10/79:15 am -

2 stops17h 56m

Wed 10/217:02 am -

2 stops21h 33m

Deal found 8/22

$974

Mon 1/113:20 pm -

2 stops29h 05m

Thu 1/218:46 am -

1 stop15h 09m

Deal found 8/24

$912

Mon 10/58:15 pm -

1 stop22h 55m

Mon 10/123:22 pm -

2 stops17h 18m

Deal found 8/21

$1,036

Wed 10/76:15 am -

1 stop19h 40m

Wed 10/142:30 pm -

2 stops22h 10m

Deal found 8/20

$951

Tue 12/17:05 pm -

2 stops35h 37m

Tue 12/81:04 pm -

2 stops20h 01m

Deal found 8/23

$980

Mon 2/11:35 pm -

2 stops30h 50m

Thu 2/113:15 pm -

1 stop12h 35m

Deal found 8/24

$912

Tue 10/68:15 pm -

1 stop22h 55m

Tue 10/133:31 pm -

2 stops18h 59m

Deal found 8/21

$1,037

Sun 12/66:00 am -

1 stop19h 00m

Thu 12/102:45 pm -

2 stops20h 20m

Deal found 8/21

$967

Mon 1/119:15 am -

2 stops19h 18m

Thu 1/218:46 am -

2 stops20h 04m

Deal found 8/24

$989

Tue 12/16:55 pm -

1 stop24h 25m

Tue 12/86:00 am -

2 stops18h 50m

Deal found 8/23

$1,037

Sun 12/66:30 am -

2 stops18h 30m

Thu 12/102:45 pm -

2 stops19h 25m

Deal found 8/20

$968

Wed 2/109:00 am -

2 stops22h 12m

Thu 2/1810:00 am -

1 stop17h 50m

Deal found 8/23

$969

Tue 10/69:25 am -

2 stops20h 58m

Tue 10/137:02 am -

2 stops17h 23m

Deal found 8/22

$994

Sun 1/1710:00 am -

2 stops17h 03m

Thu 1/217:00 am -

2 stops18h 00m

Deal found 8/20

$1,039

Tue 10/68:20 am -

2 stops17h 35m

Tue 10/1310:10 am -

3 stops20h 25m

Deal found 8/22

$977

Thu 10/89:25 am -

2 stops17h 46m

Wed 10/217:02 am -

2 stops17h 23m

Deal found 8/23

$994

Fri 10/91:05 pm -

1 stop32h 02m

Fri 10/169:30 pm -

1 stop24h 50m

Deal found 8/24

$996

Tue 1/129:15 am -

2 stops19h 18m

Mon 2/11:39 pm -

2 stops19h 26m

Deal found 8/24

$1,025

Wed 10/710:50 am -

2 stops35h 37m

Wed 10/141:03 pm -

2 stops60h 52m

Deal found 8/22

$1,722

Last-minute flights from London to Portland
Discover last-minute flight deals from London to Portland. Data last updated August 25, 2026 and is based on user searches.

Mon 8/311:05 pm -

1 stop30h 45m

Thu 9/103:30 pm -

1 stop20h 50m

Deal found 8/20

$874

Mon 8/317:30 pm -

2 stops34h 42m

Sun 9/1312:34 pm -

2 stops21h 06m

Deal found 8/20

$876

Fri 9/48:40 pm -

2 stops24h 25m

Thu 9/103:35 pm -

2 stops20h 20m

Deal found 8/20

$868

Fri 9/49:45 pm -

2 stops23h 20m

Thu 9/103:35 pm -

2 stops23h 30m

Deal found 8/20

$901

Wed 9/91:05 pm -

1 stop12h 45m

Mon 10/53:30 pm -

1 stop20h 50m

Deal found 8/24

$888

Wed 9/91:05 pm -

1 stop12h 45m

Wed 10/73:30 pm -

1 stop12h 25m

Deal found 8/24

$910

Mon 9/219:25 pm -

1 stop28h 30m

Mon 9/283:30 pm -

1 stop12h 25m

Deal found 8/24

$873

Mon 9/216:05 pm -

2 stops38h 02m

Mon 9/288:00 am -

1 stop20h 50m

Deal found 8/24

$903

Wed 9/2312:40 pm -

2 stops28h 51m

Thu 12/242:45 pm -

2 stops18h 10m

Deal found 8/24

$885

Wed 9/238:30 am -

2 stops22h 27m

Thu 12/243:15 pm -

1 stop12h 35m

Deal found 8/24

$911

Fri 9/256:40 am -

2 stops21h 22m

Sat 10/312:34 pm -

2 stops25h 06m

Deal found 8/24

$855

Wed 9/301:05 pm -

1 stop12h 50m

Wed 10/73:30 pm -

1 stop12h 25m

Deal found 8/23

$870

One-way flights from London to Portland
Search for one-way flight options from London to Portland. Find affordable one-way fares based on user searches. Data last updated August 25, 2026.

Fri 1/226:10 pm -

3 stops34h 40m

Deal found 8/22

$533

Wed 9/96:15 am -

3 stops39h 35m

Deal found 8/22

$533

Sat 9/196:45 am -

3 stops59h 22m

Deal found 8/20

$534

Fri 1/229:45 pm -

3 stops31h 05m

Deal found 8/22

$535

Sun 12/139:35 pm -

3 stops31h 13m

Deal found 8/23

$536

Sat 2/2012:10 pm -

3 stops32h 12m

Deal found 8/21

$536

Thu 12/311:00 am -

2 stops33h 22m

Deal found 8/24

$536

Fri 9/116:35 am -

3 stops39h 15m

Deal found 8/23

$537

Thu 1/217:10 pm -

3 stops33h 40m

Deal found 8/22

$539

Sun 12/68:50 pm -

3 stops31h 58m

Deal found 8/23

$539

Wed 9/912:40 pm -

2 stops33h 10m

Deal found 8/22

$539

Fri 10/169:50 am -

2 stops35h 42m

Deal found 8/24

$540

Find flight deals from London to Portland

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$853 (Trip.com)
One-way from	$533 (Kiwi.com)
Popular in	August
Cheapest in	February
Average price	$1,334
Good round-trip deal	$1,015 or less
Good one-way deal	$551 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 ($154 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($30 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in August 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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LondonPortland

LHR London Heathrow - PDX Portland

LHRPDX

London Heathrow

Fri 10/9

6:30 am-7:11 pm

2 stops20h 41m

Portland

Fri 10/16

2:27 pm-11:55 am

1 stop13h 28m

$869

LondonPortland

STN London Stansted - PDX Portland

STNPDX

London Stansted

Mon 11/16

8:10 am-5:00 pm

2 stops16h 50m

Portland

Mon 11/30

2:45 pm-3:05 pm

2 stops16h 20m

$897

LondonPortland

LHR London Heathrow - PDX Portland

LHRPDX

London Heathrow

Mon 9/28

2:50 pm-12:05 pm

2 stops29h 15m

Portland

Mon 12/21

7:10 pm-11:50 am

1 stop32h 40m

$903

LondonPortland

LHR London Heathrow - PDX Portland

LHRPDX

London Heathrow

Wed 1/27

7:40 am-12:54 am

2 stops25h 14m

Portland

Sun 1/31

4:05 pm-9:40 am

1 stop33h 35m

$911

LondonPortland

LHR London Heathrow - PDX Portland

LHRPDX

London Heathrow

Mon 1/11

3:20 pm-12:25 pm

2 stops29h 05m

Portland

Thu 1/21

8:46 am-7:55 am

1 stop15h 09m

$912

LondonPortland

LHR London Heathrow - PDX Portland

LHRPDX

London Heathrow

Mon 2/1

1:35 pm-12:25 pm

2 stops30h 50m

Portland

Thu 2/11

3:15 pm-11:50 am

1 stop12h 35m

$912

LondonPortland

LHR London Heathrow - PDX Portland

LHRPDX

London Heathrow

Tue 10/6

7:05 am-8:50 pm

2 stops21h 45m

Portland

Tue 10/13

7:00 am-4:00 pm

3 stops25h 00m

$933

LondonPortland

LGW London Gatwick - PDX Portland

LGWPDX

London Gatwick

Mon 2/1

10:25 am-8:51 pm

2 stops18h 26m

Portland

Thu 2/11

1:59 pm-7:25 pm

2 stops21h 26m

$935

LondonPortland

LHR London Heathrow - PDX Portland

LHRPDX

London Heathrow

Thu 12/10

6:40 am-10:40 pm

2 stops24h 00m

Portland

Mon 12/14

7:05 am-5:40 pm

2 stops26h 35m

$941

LondonPortland

LHR London Heathrow - PDX Portland

LHRPDX

London Heathrow

Wed 10/7

6:00 am-7:11 pm

2 stops21h 11m

Portland

Wed 10/14

1:03 pm-5:50 pm

2 stops20h 47m

$949

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/22

Showing 1-10 of 60 resultsSorted by cheapest first

...

Compare providers for flights from London to Portland

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from London to Portland in August.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
AranGrant	Price Accuracy3 stars	Trust 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.

LON-PDX

STN-PDX

LCY-PDX

LHR-PDX

LGW-PDX

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

LON-PDX

STN-PDX

LCY-PDX

LHR-PDX

LGW-PDX

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

Currently, February is the cheapest month in which you can book a flight from London to Portland (average of $787). Flying from London to Portland in August is currently the most expensive (average of $1,276). 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?

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.

Weekly flight availability from London to Portland

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?

Airfare is below average for this route at the moment.

London to Portland flights typically cost between $864 and $1,274 in October.
The cheapest round-trip price found within the last 5 days was $853 on Multiple Airlines (Oct 6-Oct 13).

How often are flights from London to Portland delayed?

About 22% of weekly flights between London and Portland have experienced delays in the past year, with the average delay time being 127 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 22% of flights being delayed.

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

To ensure you get the cheapest price possible for a flight from London to Portland, you should look to book at least 32 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.

The best insider tips for London to Portland flights

Cheapflights partnered with top experts to bring you the best recommendations for your London to Portland trip

Our travel experts

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.

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 reviews from past customers who have flown 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.

British Airways

6.7

Okay

8,188 reviews

Reviews

1 / 20

6.0

Good

Roxanne,Sep 2025

LHR - IAD

Food was mediocre. Couldn't use headphones because no information on how to use. Staff paid so much attention on a family with a baby . They got VIP treatment.

British Airways

6.7

Okay

8,188 reviews

British Airways

6.7

Okay

8,188 reviews

Reviews

1 / 20

6.0

Good

Roxanne,Sep 2025

LHR - IAD

Food was mediocre. Couldn't use headphones because no information on how to use. Staff paid so much attention on a family with a baby . They got VIP treatment.

Related info for your journey

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. 1 airline has flights to Portland from London on a regular basis.
How long is the flight from London to Portland?
Lufthansa, United Airlines, and SWISS can get you from London to Portland in just under 17h 56m. Your travel time can differ by up to 11h 19m. London and Portland are separated by a distance of 4908 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.
What is the cheapest airline to fly from London to Portland round-trip?
Currently priced at $715, British Airways will fly you from London to Portland and back. In addition to British Airways, many other airlines offer competitively priced options for your trip. British Airways is priced at 29% 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 $562. Users have also found prices from $573 and $580 on British Airways and Finnair, respectively.
What are the most popular routes from London to Portland?
While some choose either London Gatwick - Portland or London Stansted - 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 (82%), Alaska Airlines (82%), Aer Lingus( 82%).
What are the cheapest flights from London to Portland?
Looking for the cheapest flight from London to Portland? While on average our users pay $1,778, our data indicates the cheapest price to be $548. The most popular route (London Heathrow - Portland), is priced around $773.
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, February is the cheapest month in which you can book a flight from London to Portland (average of $787). Flying from London to Portland in August is currently the most expensive (average of $1,276). 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

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Top airline flying from London to Portland

Airline	Cheapest	Average	Flexibility	On-time
British Airways	Cheapest$715	Average$1,085	FlexibilityNo cancel fee	On-time70%

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$533+ 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 1/22. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap flight deals from London to Portland

Cheapest flights from London to PortlandExplore 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 August 25, 2026.

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 August 25, 2026.

Best flights from London to PortlandDiscover carefully curated flight deals from London to Portland that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 25, 2026.

Discover carefully curated flight deals from London to Portland that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 25, 2026.

Last-minute flights from London to PortlandDiscover last-minute flight deals from London to Portland. Data last updated August 25, 2026 and is based on user searches.

Discover last-minute flight deals from London to Portland. Data last updated August 25, 2026 and is based on user searches.

One-way flights from London to PortlandSearch for one-way flight options from London to Portland. Find affordable one-way fares based on user searches. Data last updated August 25, 2026.

Search for one-way flight options from London to Portland. Find affordable one-way fares based on user searches. Data last updated August 25, 2026.

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Use the filters below to find and compare flights from London to Portland that are best for you.

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 August.

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.

Cheapflights Insights

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

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 August 25, 2026.

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.

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 August 25, 2026.

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?

Airfare is below average for this route at the moment.

London to Portland flights typically cost between $864 and $1,274 in October.The cheapest round-trip price found within the last 5 days was $853 on Multiple Airlines (Oct 6-Oct 13).

How often are flights from London to Portland delayed?

About 22% of weekly flights between London and Portland have experienced delays in the past year, with the average delay time being 127 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 22% of flights being delayed.

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

To ensure you get the cheapest price possible for a flight from London to Portland, you should look to book at least 32 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.

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

Reviews of airlines servicing Portland

Read reviews from past customers who have flown 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.

Related info for your journey

What airport do you fly into for flights to Portland from London?

How long is the flight from London to Portland?

What is the cheapest airline to fly from London to Portland round-trip?

What are the cheapest airlines to fly from London to Portland one-way?

What are the most popular routes from London to Portland?

What are the most reliable airlines from London to Portland?

What are the cheapest flights from London to Portland?

Can I find deals for flights from London to Portland that include hotel bookings?

How can I find direct flights from London to Portland?

Can I find deals for business class flights from London to Portland?

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

Traveling to a place near Portland?

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Alternative routes for London to Portland

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Complete your trip

Complete your trip to Portland by adding a car rental and/or hotel reservation to your travel itinerary.

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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 August 25, 2026.

Best flights from London to Portland
Discover carefully curated flight deals from London to Portland that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 25, 2026.

Last-minute flights from London to Portland
Discover last-minute flight deals from London to Portland. Data last updated August 25, 2026 and is based on user searches.

One-way flights from London to Portland
Search for one-way flight options from London to Portland. Find affordable one-way fares based on user searches. Data last updated August 25, 2026.

London to Portland flights typically cost between $864 and $1,274 in October.
The cheapest round-trip price found within the last 5 days was $853 on Multiple Airlines (Oct 6-Oct 13).