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$246+ Cheap flights from Portland (PDX) to London (LON)

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 3/15. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — LON
Feb 4 — Feb 111
Tue 2/4
Tue 2/11
1 adult, Economy
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The best prices from Portland to London are usually found in January or November, booked 77 days in advance, depart on a Wednesday or Tuesday and return on a Friday

Cheap flight deals from Portland to London

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) to London (LON). 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 January 30, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$632
(Kiwi.com)

One-way from

$263
(Norse)

Popular in

June

Cheapest in

January

Average price

$694

Good round-trip deal

$711 or less

Good one-way deal

$528 or less
Provider with most accurate pricing for Portland-London (LON) flight deals.
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Provider most trusted by Cheapflights users for Portland-London (LON) flights.
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From Portland to London (LON)
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One-way flight from Portland to London (LON)
Search Deals
Highest demand for flights based on searches. 23% potential increase in price ($264 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($43 potential savings vs. average RT price).
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Average for round-trip flights in January 2025
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Price to beat on a round-trip flight from Portland to London (LON).
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Price to beat on a one-way flight from Portland to London (LON).
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Find flight deals from Portland to London

Cheapest flights from Portland to London
Explore the most affordable flight options available from Portland to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 30, 2025.

This Kiwi.com deal was found by Cheapflights users on 1/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/1610:16 amPDX - LGW
1 stop16h 19mMultiple Airlines
Sun 2/2312:00 pmLGW - PDX
1 stop28h 40mMultiple Airlines
Deal found 1/29$632
This Expedia deal was found by Cheapflights users on 1/29. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/2510:10 amPDX - LHR
1 stop16h 00mMultiple Airlines
Tue 3/46:30 amLHR - PDX
2 stops16h 14mMultiple Airlines
Deal found 1/29$635
This Mytrip deal was found by Cheapflights users on 1/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/223:20 pmPDX - LHR
1 stop12h 35mIcelandair
Thu 10/29:25 pmLHR - PDX
1 stop28h 30mIcelandair
Deal found 1/30$636
This Expedia deal was found by Cheapflights users on 1/29. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/251:36 pmPDX - LHR
1 stop13h 34mVirgin Atlantic
Tue 3/46:30 amLHR - PDX
1 stop12h 55mVirgin Atlantic
Deal found 1/29$648
This Gotogate deal was found by Cheapflights users on 1/30. 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.
Sun 2/236:00 amPDX - LHR
2 stops17h 10mAir Canada
Tue 3/111:25 pmLHR - PDX
2 stops27h 09mAir Canada
Deal found 1/30$651
This oojo deal was found by Cheapflights users on 1/30. 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.
Mon 9/223:20 pmPDX - LGW
1 stop15h 20mIcelandair
Mon 9/293:40 pmLGW - PDX
1 stop34h 15mIcelandair
Deal found 1/30$661
This Expedia deal was found by Cheapflights users on 1/30. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/1110:10 amPDX - LHR
1 stop17h 00mLufthansa
Wed 3/196:30 amLHR - PDX
2 stops18h 54mLufthansa
Deal found 1/30$662
This Cheapflightsfares deal was found by Cheapflights users on 1/30. 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 9/228:01 amPDX - LHR
1 stop14h 24mBritish Airways
Fri 10/33:40 pmLHR - PDX
Nonstop9h 55mBritish Airways
Deal found 1/30$667
This United deal was found by Cheapflights users on 1/30. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/2011:59 pmPDX - LHR
1 stop23h 41mUnited Airlines
Tue 9/306:30 amLHR - PDX
2 stops16h 16mUnited Airlines
Deal found 1/30$669
This Delta deal was found by Cheapflights users on 1/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/231:36 pmPDX - LHR
1 stop13h 34mDelta
Fri 3/76:30 amLHR - PDX
1 stop12h 55mDelta
Deal found 1/29$675
This American Airlines deal was found by Cheapflights users on 1/29. 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.
Wed 2/2612:00 pmPDX - LHR
1 stop16h 05mAmerican Airlines
Wed 3/52:20 pmLHR - PDX
Nonstop10h 15mAmerican Airlines
Deal found 1/29$693
This Virgin Atlantic deal was found by Cheapflights users on 1/28. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/276:05 amPDX - LCY
2 stops18h 05mVirgin Atlantic
Thu 3/66:10 pmLCY - PDX
1 stop25h 15mVirgin Atlantic
Deal found 1/28$703

Find flights from Portland to London within your budget

Customize your flight search to find flights from Portland to London 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 January 30, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

PortlandLondon

PDX - LGW

PDXLGW

Portland

Sun 2/16

10:16 am-10:35 am

1 stop16h 19m

London Gatwick

Sun 2/23

12:00 pm-8:40 am

1 stop28h 40m

$632

PortlandLondon

PDX - LHR

PDXLHR

Portland

Sat 2/22

7:05 pm-7:10 am

2 stops28h 05m

London Heathrow

Mon 3/3

6:30 am-2:44 pm

2 stops16h 14m

$634

PortlandLondon

PDX - LHR

PDXLHR

Portland

Sun 3/9

7:30 pm-12:10 pm

Nonstop9h 40m

London Heathrow

Sun 3/16

12:10 pm-11:00 pm

1 stop17h 50m

$637

PortlandLondon

PDX - LHR

PDXLHR

Portland

Sun 3/9

7:30 pm-12:10 pm

Nonstop9h 40m

London Heathrow

Tue 3/18

2:20 pm-5:35 pm

Nonstop10h 15m

$639

PortlandLondon

PDX - LHR

PDXLHR

Portland

Sun 3/9

1:29 pm-7:25 am

1 stop34h 56m

London Heathrow

Mon 3/17

1:00 pm-2:44 pm

1 stop32h 44m

$647

PortlandLondon

PDX - LHR

PDXLHR

Portland

Tue 2/25

1:36 pm-11:10 am

1 stop13h 34m

London Heathrow

Tue 3/4

6:30 am-11:25 am

1 stop12h 55m

$648

PortlandLondon

PDX - LHR

PDXLHR

Portland

Sun 2/23

6:00 am-7:10 am

2 stops17h 10m

London Heathrow

Tue 3/11

1:00 pm-10:09 pm

1 stop16h 09m

$654

PortlandLondon

PDX - LHR

PDXLHR

Portland

Fri 4/18

1:38 pm-1:30 pm

1 stop15h 52m

London Heathrow

Sun 4/27

6:30 am-11:20 am

1 stop12h 50m

$659

PortlandLondon

PDX - LHR

PDXLHR

Portland

Sun 3/9

10:10 am-9:20 am

2 stops16h 10m

London Heathrow

Tue 3/18

6:30 am-6:24 pm

2 stops18h 54m

$663

PortlandLondon

PDX - LHR

PDXLHR

Portland

Mon 4/21

3:15 pm-1:30 pm

1 stop14h 15m

London Heathrow

Fri 5/2

6:30 am-11:20 am

1 stop12h 50m

$684

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/29

Showing 1-10 of 55 results
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Compare providers for flights from Portland to London

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 Portland to London in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star

*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 Portland-London flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland-London flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland-London flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Portland-London 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 Portland-London 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 Portland to London

Have a flexible travel schedule? Discover the best time to fly to London from Portland 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.

Travel insights for flights from Portland to London

Get recent, data-driven insights about flights from Portland to London including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a round-trip flight from Portland to London. Price data was last updated on January 24, 2025.

The price you pay for your flight from Portland to London may vary depending on when you book. For the best chance of a lower fare, look to book 77 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, November is the cheapest month in which you can book a flight from Portland to London (average of $661). Flying from Portland to London in June is currently the most expensive (average of $1,138). 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 PDX to LON?

Find hourly flight availability from Portland to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 30, 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 23% on flights from Portland to London by exploring options for tickets at noon.

What is the cheapest day to fly from Portland to London?

Use this chart to determine the cheapest time to fly round-trip from Portland to London. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Portland to London flight should consider departing on Monday afternoons when fares are most often at their lowest. Friday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in London by month

Plan your trip to London by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit London when rainfall is around 1.6 in.

Temperature in London by month

Plan your trip to London by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London, 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 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. 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 London. Reviews last updated January 30, 2025.
Read through reviews of airlines operating flights from Portland to London, such as Delta, Alaska Airlines and KLM. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,454 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

8.0

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very good
8,454 reviews
Delta
8.0
Very good
8,454 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

8.0

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Alaska Airlines
8.0
Very good
9,688 reviews
Delta
8.0
Very good
8,454 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

8.0

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM
7.8
Good
1,335 reviews
Delta
8.0
Very good
8,454 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

8.0

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Finnair
7.6
Good
1,285 reviews
Delta
8.0
Very good
8,454 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

8.0

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

SWISS
7.5
Good
1,584 reviews
Delta
8.0
Very good
8,454 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

8.0

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Portland to London. 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 from for flights from Portland to London?

    For a flight from Portland to London, you will be flying from Portland. Portland (PDX) is just 6.0 mi from the center of the city. Portland is the only Portland airport and it handles 0 outbound flights to London per day. 12 airlines have flights to London from Portland on a regular basis.

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

    Cheapflights users have booked flights from Portland to London round-trip from $637. Other airlines that can offer you cheap pricing are British Airways, from $639, and United Airlines, from $647. You may be able to fly from Portland to London for 26% less than the average price by searching for these airlines.

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

    The cheapest airlines for a one-way flight from Portland to London are WestJet ($393), Iberia ($402), and KLM ($411).

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

    The most popular flight routes from Portland to London are Portland - London Heathrow, Portland - London Gatwick and Portland - London City.

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

    The top 3 most reliable airlines when flying from Portland to London are British Airways (88%), American Airlines (76%) and Alaska Airlines (76%).

  • What are the cheapest flights from Portland to London?

    The cheapest flight price from Portland to London is $410. On average you can expect to pay $1,686. The most popular route, (Portland - London Heathrow), can usually be booked for $628.

  • Where are the most common layover locations when flying from Portland to London?

    Portland to London flights have a layover in Seattle most often.

  • What are some popular things to do or see while on a layover in Seattle?

    Pike Place Market, Space Needle, and Seattle Waterfront are the most popular attractions in Seattle if you're in need of something to do during your layover. Travelers on a layover in Seattle can visit Pike Place Market, Space Needle, and Seattle Waterfront, by traveling 11.2 mi, 12.0 mi, and 10.9 mi, respectively after landing at Seattle/Tacoma Intl. Travelers can book a car rental at Seattle/Tacoma Intl for about $46 per day to make their sightseeing more efficient.

  • Where are the least popular layover locations for Portland to London flights?

    Portland to London flights that have layovers will least frequently stop in Reykjavik.

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

    Yes. In addition to deals on Portland to London flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Portland to London?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to London.

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

    Yes. Cheapflights offers flight deals from Portland to London 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 Portland to London?

    Currently, November is the cheapest month in which you can book a flight from Portland to London (average of $661). Flying from Portland to London in June is currently the most expensive (average of $1,138). 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
Hayes
Hounslow
Thornton Heath
Harrow
Luton
Wembley
Canterbury
Gatwick
Horley
Milton Keynes
Dover
Orpington
Watford
Croydon
Borehamwood
Bromley
Folkestone
Ilford
Aylesbury
Chelmsford

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Alternative routes for Portland to London

See prices for flight routes from nearby airports that may be better suited for you.
Portland to Heathrow flights
Portland to Gatwick flights
Portland to London City flights
Portland to Edinburgh flights
Boise to Heathrow flights
Boise to Gatwick flights
Redmond to Heathrow flights
Medford to Heathrow flights
Portland to Manchester flights
Boise to London City flights
Eugene to Heathrow flights
Boise to Edinburgh flights
Portland to Stansted flights
Eugene to London City flights
Redmond to London City flights
Eugene to Gatwick flights
Portland to Luton flights
Medford to Gatwick flights
Redmond to Gatwick flights
Portland to Leeds flights
Portland to Bristol flights
Boise to Birmingham flights
Medford to Manchester flights
Portland to Southend flights
Redmond to Southampton flights

Top 10 airlines flying from Portland to London

Discover the top 10 airlines that operate flights from Portland to London. 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 January 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$495Average$872FlexibilityNo cancel feeOn-time76%
KLMCheapest$574Average$978FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$592Average$866FlexibilityNo cancel feeOn-time76%
FinnairCheapest$597Average$788FlexibilityNo cancel feeOn-time76%
IberiaCheapest$599Average$815FlexibilityNo cancel feeOn-time77%
DeltaCheapest$602Average$931FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$613Average$898FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$628Average$938FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$639Average$863FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$641Average$970FlexibilityNo cancel feeOn-time70%
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