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$607+ 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
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
1 adult, Economy
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Cheapflights Tip: The best prices from London to Portland are usually found in February or March, booked 63 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 July 31, 2025.

Round-trip from

$747
(American Airlines)

One-way from

$607
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$1,158

Good round-trip deal

$910 or less

Good one-way deal

$1,077 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. 16% potential increase in price ($178 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($25 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Price to beat on a round-trip flight from London (LON) to Portland.
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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 July 31, 2025.

This American Airlines deal was found by Cheapflights users on 7/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/93:40 pmLHR - PDX
Nonstop9h 55mAmerican Airlines
Thu 9/187:25 pmPDX - LHR
Nonstop9h 35mAmerican Airlines
Deal found 7/29$747
This oojo deal was found by Cheapflights users on 7/29. 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 9/51:05 pmLHR - PDX
1 stop12h 50mIcelandair
Sat 9/203:20 pmPDX - LHR
1 stop21h 00mIcelandair
Deal found 7/29$748
This Delta deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/256:30 amLHR - PDX
1 stop12h 50mDelta
Tue 9/96:20 amPDX - LHR
1 stop22h 50mDelta
Deal found 7/31$749
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/161:05 pmLGW - PDX
2 stops19h 10mMultiple Airlines
Sun 9/2110:30 amPDX - LGW
1 stop16h 25mMultiple Airlines
Deal found 7/30$749
This Cheapflightsfares deal was found by Cheapflights users on 7/30. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/256:30 amLHR - PDX
2 stops20h 16mLufthansa
Wed 10/17:30 amPDX - LHR
1 stop22h 40mLufthansa
Deal found 7/30$750
This United Airlines deal was found by Cheapflights users on 7/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/22:10 pmLHR - PDX
1 stop27h 10mUnited Airlines
Mon 10/1312:53 pmPDX - LHR
1 stop12h 47mUnited Airlines
Deal found 7/29$751
This Cheapflightsfares deal was found by Cheapflights users on 7/30. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/253:30 pmLHR - PDX
1 stop15h 56mBritish Airways
Tue 9/92:06 pmPDX - LHR
1 stop14h 39mBritish Airways
Deal found 7/30$752
This Air Canada deal was found by Cheapflights users on 7/29. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/52:05 pmLHR - PDX
2 stops16h 56mAir Canada
Mon 10/139:55 amPDX - LHR
1 stop19h 25mAir Canada
Deal found 7/29$753
This American Airlines deal was found by Cheapflights users on 7/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/251:35 pmLHR - PDX
1 stop14h 25mMultiple Airlines
Tue 9/97:25 pmPDX - LHR
Nonstop9h 35mMultiple Airlines
Deal found 7/29$754
This SWISS deal was found by Cheapflights users on 7/30. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/161:05 pmLCY - PDX
2 stops37h 41mSWISS
Sun 9/2110:51 amPDX - LCY
2 stops37h 59mSWISS
Deal found 7/30$775
This oojo deal was found by Cheapflights users on 7/29. 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.
Sun 9/215:50 pmLCY - PDX
2 stops56h 41mLufthansa
Sat 10/112:15 pmPDX - LCY
2 stops19h 00mLufthansa
Deal found 7/29$786
This oojo deal was found by Cheapflights users on 7/29. 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.
Tue 9/91:30 pmLCY - PDX
2 stops37h 24mBritish Airways
Mon 9/156:07 amPDX - LCY
2 stops26h 23mBritish Airways
Deal found 7/29$787

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 July 31, 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

LHR - PDX

LHRPDX

London Heathrow

Tue 9/9

3:40 pm-5:35 pm

Nonstop9h 55m

Portland

Thu 9/18

7:25 pm-1:00 pm

Nonstop9h 35m

$747

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Fri 9/5

1:05 pm-5:55 pm

1 stop12h 50m

Portland

Sat 9/20

3:20 pm-8:20 pm

1 stop21h 00m

$748

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Mon 8/25

6:30 am-11:20 am

1 stop12h 50m

Portland

Tue 9/9

6:20 am-1:10 pm

1 stop22h 50m

$749

LondonPortland

LGW - PDX

LGWPDX

London Gatwick

Tue 9/16

1:05 pm-12:15 am

2 stops19h 10m

Portland

Sun 9/21

10:30 am-10:55 am

1 stop16h 25m

$749

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Thu 9/25

6:30 am-6:46 pm

2 stops20h 16m

Portland

Wed 10/1

7:30 am-2:10 pm

1 stop22h 40m

$750

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Thu 10/2

2:10 pm-11:01 pm

1 stop16h 51m

Portland

Sun 10/12

7:00 am-6:20 am

1 stop15h 20m

$751

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Mon 8/25

3:30 pm-11:26 pm

1 stop15h 56m

Portland

Tue 9/9

2:06 pm-12:45 pm

1 stop14h 39m

$752

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Sun 10/5

2:05 pm-11:01 pm

2 stops16h 56m

Portland

Mon 10/13

9:55 am-1:20 pm

1 stop19h 25m

$753

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Mon 8/25

1:35 pm-8:00 pm

1 stop14h 25m

Portland

Tue 9/9

7:25 pm-1:00 pm

Nonstop9h 35m

$754

LondonPortland

LCY - PDX

LCYPDX

London City

Tue 9/16

1:05 pm-6:46 pm

2 stops37h 41m

Portland

Sun 9/21

10:51 am-8:50 am

2 stops37h 59m

$775

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Showing 1-10 of 43 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 July 25, 2025.

To ensure you get the cheapest price possible for a flight from London to Portland, you should look to book at least 63 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 July 31, 2025.

It’s optimal to fly from London to Portland in the afternoon. By choosing this option you can save up to 20% 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 July 31, 2025.

The most flights from LON to PDX are scheduled on a Wednesday (7 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (1 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 July 31, 2025.
Read reviews from past customers who have flown Delta, KLM, and Finnair 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.
Delta
8.0
Very good
7,981 reviews

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Delta
8.0
Very good
7,981 reviews
Delta
8.0
Very good
7,981 reviews

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
KLM
7.8
Good
1,383 reviews
Delta
8.0
Very good
7,981 reviews

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Finnair
7.6
Good
1,316 reviews
Delta
8.0
Very good
7,981 reviews

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
SWISS
7.5
Good
1,686 reviews
Delta
8.0
Very good
7,981 reviews

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
United Airlines
7.4
Good
8,900 reviews
Delta
8.0
Very good
7,981 reviews

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.

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

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

    Currently priced at $747, American Airlines will fly you from London to Portland and back. In addition to American Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Icelandair and Delta - these airlines can fly you to your destination from $748 and $749, respectively. American Airlines is priced at 15% 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 WestJet. According to our data, you can fly for as low as $607. Users have also found prices from $686 and $722 on Icelandair and Lufthansa, respectively.

  • What are the most popular routes from London to Portland?

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

  • What are the most reliable airlines from London to Portland?

    Before booking your flight to Portland from London, check out the most reliable airlines to get you to your destination on time: American Airlines (80%), Alaska Airlines (80%), Aer Lingus( 80%).

  • What are the cheapest flights from London to Portland?

    Looking for the cheapest flight from London to Portland? While on average our users pay $1,964, our data indicates the cheapest price to be $785. The most popular route (London Heathrow - Portland), is priced around $641.

  • 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
Lincoln City
McMinnville
Lake Oswego
Hillsboro
Astoria
Cannon Beach
Long Beach
Longview
Tigard
Depoe Bay
Woodburn
Stevenson
Wilsonville
Pacific City
Troutdale
Tillamook

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Top 4 airlines flying from London to Portland

Discover the top 4 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 July 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$701Average$793FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$733Average$941FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$782Average$953FlexibilityNo cancel feeOn-time71%
IberiaCheapest$784Average$979FlexibilityNo cancel feeOn-time77%

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