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$308+ Cheap flights from Portland (PDX) to Heathrow (LHR)

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 2/2. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — LHR
Jan 28 — Feb 41
Tue 1/28
Tue 2/4
1 adult, Economy
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The best prices from Portland to London Heathrow are usually found in November or October, booked 65 days in advance, depart on a Tuesday or Wednesday and return on a Friday

Cheap flight deals from Portland to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) to Heathrow (LHR). 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 23, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$641
(Iberia)

One-way from

$308
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$746

Good round-trip deal

$713 or less

Good one-way deal

$529 or less
Provider with most accurate pricing for Portland-London Heathrow flight deals.
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Provider most trusted by Cheapflights users for Portland-London Heathrow flights.
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From Portland to London Heathrow
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One-way flight from Portland to London Heathrow
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Highest demand for flights based on searches. 21% potential increase in price ($243 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($41 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 Heathrow.
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Price to beat on a one-way flight from Portland to London Heathrow.
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Find flight deals from Portland to Heathrow

Cheapest flights from Portland to Heathrow
Explore the most affordable flight options available from Portland to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 23, 2025.

This Iberia deal was found by Cheapflights users on 1/23. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/165:31 amPDX - LHR
1 stop16h 54mIberia
Wed 4/3010:30 amLHR - PDX
1 stop20h 18mIberia
Deal found 1/23$641
This FlightHub deal was found by Cheapflights users on 1/23. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/156:00 amPDX - LHR
2 stops16h 30mMultiple Airlines
Tue 5/138:45 amLHR - PDX
2 stops18h 00mMultiple Airlines
Deal found 1/23$642
This United Airlines deal was found by Cheapflights users on 1/22. 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.
Tue 2/183:54 pmPDX - LHR
1 stop31h 31mUnited Airlines
Tue 2/251:00 pmLHR - PDX
1 stop28h 34mUnited Airlines
Deal found 1/22$644
This Delta deal was found by Cheapflights users on 1/21. 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.
Tue 3/412:59 amPDX - LHR
1 stop22h 06mDelta
Tue 3/116:30 amLHR - PDX
1 stop12h 55mDelta
Deal found 1/21$646
This Finnair deal was found by Cheapflights users on 1/23. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/167:35 amPDX - LHR
1 stop15h 45mFinnair
Tue 3/42:20 pmLHR - PDX
Nonstop10h 15mFinnair
Deal found 1/23$653
This Lufthansa deal was found by Cheapflights users on 1/21. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/510:10 amPDX - LHR
2 stops15h 10mLufthansa
Thu 3/131:00 pmLHR - PDX
1 stop12h 24mLufthansa
Deal found 1/21$655
This American Airlines deal was found by Cheapflights users on 1/23. 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.
Sun 2/165:31 amPDX - LHR
2 stops17h 19mAmerican Airlines
Tue 3/42:20 pmLHR - PDX
Nonstop10h 15mAmerican Airlines
Deal found 1/23$658
This Air Canada deal was found by Cheapflights users on 1/23. 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 2/1610:10 amPDX - LHR
2 stops15h 10mAir Canada
Tue 3/41:00 pmLHR - PDX
1 stop17h 09mAir Canada
Deal found 1/23$659
This oojo deal was found by Cheapflights users on 1/23. 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 2/166:00 amPDX - LHR
2 stops26h 00mScandinavian Airlines
Sun 2/237:30 pmLHR - PDX
2 stops35h 10mScandinavian Airlines
Deal found 1/23$673
This Ovago deal was found by Cheapflights users on 1/22. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/195:31 amPDX - LHR
1 stop20h 09mBritish Airways
Wed 2/262:20 pmLHR - PDX
Nonstop10h 15mBritish Airways
Deal found 1/22$674
This KLM deal was found by Cheapflights users on 1/21. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/75:15 pmPDX - LHR
1 stop11h 55mKLM
Fri 3/146:30 amLHR - PDX
1 stop12h 55mKLM
Deal found 1/21$696
This Gotogate deal was found by Cheapflights users on 1/23. 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 5/183:20 pmPDX - LHR
1 stop21h 00mIcelandair
Sat 5/319:25 pmLHR - PDX
1 stop28h 30mIcelandair
Deal found 1/23$711

Find flights from Portland to Heathrow within your budget

Customize your flight search to find flights from Portland to Heathrow 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 23, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

PortlandLondon

PDX - LHR

PDXLHR

Portland

Wed 4/16

5:31 am-6:25 am

1 stop16h 54m

London Heathrow

Wed 4/30

10:30 am-10:48 pm

1 stop20h 18m

$641

PortlandLondon

PDX - LHR

PDXLHR

Portland

Tue 4/15

6:00 am-6:30 am

2 stops16h 30m

London Heathrow

Tue 5/13

8:45 am-6:45 pm

2 stops18h 00m

$642

PortlandLondon

PDX - LHR

PDXLHR

Portland

Tue 2/18

7:42 pm-7:25 am

1 stop27h 43m

London Heathrow

Wed 2/26

1:00 pm-9:34 am

1 stop28h 34m

$644

PortlandLondon

PDX - LHR

PDXLHR

Portland

Tue 3/4

12:59 am-7:05 am

1 stop22h 06m

London Heathrow

Tue 3/11

6:30 am-12:25 pm

1 stop12h 55m

$646

PortlandLondon

PDX - LHR

PDXLHR

Portland

Tue 2/4

7:35 am-7:20 am

1 stop15h 45m

London Heathrow

Tue 2/11

2:20 pm-4:35 pm

Nonstop10h 15m

$651

PortlandLondon

PDX - LHR

PDXLHR

Portland

Sun 2/16

11:30 am-11:10 am

2 stops15h 40m

London Heathrow

Tue 3/4

6:30 am-11:25 am

1 stop12h 55m

$652

PortlandLondon

PDX - LHR

PDXLHR

Portland

Wed 3/5

10:10 am-9:20 am

2 stops15h 10m

London Heathrow

Thu 3/13

1:00 pm-6:24 pm

1 stop12h 24m

$655

PortlandLondon

PDX - LHR

PDXLHR

Portland

Sun 2/16

7:35 am-6:20 am

1 stop14h 45m

London Heathrow

Tue 3/4

2:20 pm-4:35 pm

Nonstop10h 15m

$658

PortlandLondon

PDX - LHR

PDXLHR

Portland

Sun 2/16

10:10 am-9:20 am

2 stops15h 10m

London Heathrow

Tue 3/4

1:00 pm-10:09 pm

1 stop17h 09m

$659

PortlandLondon

PDX - LHR

PDXLHR

Portland

Sun 2/16

6:00 am-4:00 pm

2 stops26h 00m

London Heathrow

Sun 2/23

7:30 pm-10:40 pm

2 stops35h 10m

$673

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/23

Showing 1-10 of 28 results
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Compare providers for flights from Portland to Heathrow

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 Heathrow in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
business-class.comPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust 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 Heathrow Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland-London Heathrow Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland-London Heathrow Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Portland-London Heathrow Airport 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 Heathrow Airport 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 Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow 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 Heathrow

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

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

Use this chart to determine the optimal time to book a round-trip flight from Portland to Heathrow. Price data was last updated on January 17, 2025.

Booking 65 days in advance of your planned departure date is, on average, the best time to get cheap flights from Portland to London Heathrow Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, November is the cheapest month in which you can book a flight from Portland to London Heathrow Airport (average of $661). Flying from Portland to London Heathrow Airport in June is currently the most expensive (average of $1,137). 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 LHR?

Find hourly flight availability from Portland to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 23, 2025.

One of the essential ways to save on airfare from Portland to London Heathrow Airport is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight at noon could potentially save you up to 23% on airfare.

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

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

Travelers seeking maximum savings on their Portland to London Heathrow Airport 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 Heathrow by month

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

In terms of precipitation, rainfall in London Heathrow Airport 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 Heathrow Airport when rainfall is around 1.6 in.

Temperature in Heathrow by month

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

If weather is an important factor for your trip to London Heathrow Airport, 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 Heathrow

Get insights into the airlines that provide service to Heathrow. 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 Heathrow. Reviews last updated January 23, 2025.
Read reviews from past customers who have flown United Airlines, Delta and KLM from Portland to London. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,512 reviews

Crew

8.6

Boarding

8.2

Comfort

8.0

Food

7.3

Entertainment

7.9

Overall

8.0

Reviews

1 / 10

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

Delta
8.0
Very good
8,512 reviews
Delta
8.0
Very good
8,512 reviews

Crew

8.6

Boarding

8.2

Comfort

8.0

Food

7.3

Entertainment

7.9

Overall

8.0

Reviews

1 / 10

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

KLM
7.8
Good
1,338 reviews
Delta
8.0
Very good
8,512 reviews

Crew

8.6

Boarding

8.2

Comfort

8.0

Food

7.3

Entertainment

7.9

Overall

8.0

Reviews

1 / 10

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

Finnair
7.6
Good
1,286 reviews
Delta
8.0
Very good
8,512 reviews

Crew

8.6

Boarding

8.2

Comfort

8.0

Food

7.3

Entertainment

7.9

Overall

8.0

Reviews

1 / 10

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

Virgin Atlantic
7.5
Good
663 reviews
Delta
8.0
Very good
8,512 reviews

Crew

8.6

Boarding

8.2

Comfort

8.0

Food

7.3

Entertainment

7.9

Overall

8.0

Reviews

1 / 10

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

United Airlines
7.4
Good
8,970 reviews
Delta
8.0
Very good
8,512 reviews

Crew

8.6

Boarding

8.2

Comfort

8.0

Food

7.3

Entertainment

7.9

Overall

8.0

Reviews

1 / 10

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 Heathrow. 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 Heathrow?

    Most people fly from Portland (PDX) if they book a flight from Portland to London Heathrow. On average, Portland has 2 outbound flights to London Heathrow per day from 12 airlines. Portland is conveniently located just 6.0 mi from Portland’s city center.

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

    According to our current data, Iberia ($641), United Airlines ($644), and Delta ($646) offers the cheapest pricing from Portland to London Heathrow Airport. Iberia is priced at 28% lower than the current average price of a flight leaving 3 months from now.

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

    One-way options have recently been found by users for as low as $402 on Iberia. Other airlines that offer cheap prices include Lufthansa from $418 and United Airlines from $423 one-way.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Portland to London Heathrow Airport on time: British Airways (88%), American Airlines (76%), Alaska Airlines (76%).

  • What are the cheapest flights from Portland to London Heathrow Airport?

    On average you can expect to pay $1,774 for a flight from Portland to London Heathrow Airport. The cheapest flight overall is $402 while the most popular route, (Portland - London Heathrow) is currently priced at $495.

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

    The most popular layover on flights from Portland to London Heathrow Airport is Seattle.

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

    Most Seattle visitors opt to spend their time experiencing Pike Place Market, Space Needle, and Seattle Waterfront. Pike Place Market, Space Needle, and Seattle Waterfront are located about 11.2 mi, 12.0 mi, and 10.9 mi, respectively from Seattle/Tacoma Intl. Travelers can book a car rental at Seattle/Tacoma Intl for about $48 per day to make their sightseeing more efficient.

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

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

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Portland to Heathrow 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 Heathrow Airport?

    Currently, November is the cheapest month in which you can book a flight from Portland to London Heathrow Airport (average of $661). Flying from Portland to London Heathrow Airport in June is currently the most expensive (average of $1,137). 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
Northampton
Gatwick
Horley
Milton Keynes
Dover
Orpington
Watford
Stratford-upon-Avon
Croydon
Borehamwood
Bromley
Folkestone
Ilford

Browse thousands of different options on Cheapflights for your next trip

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Top 10 airlines flying from Portland to Heathrow

Discover the top 10 airlines that operate flights from Portland to Heathrow. 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 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$498Average$780FlexibilityNo cancel feeOn-time76%
KLMCheapest$574Average$978FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$592Average$905FlexibilityNo cancel feeOn-time76%
FinnairCheapest$597Average$788FlexibilityNo cancel feeOn-time76%
IberiaCheapest$599Average$816FlexibilityNo cancel feeOn-time77%
DeltaCheapest$602Average$928FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$613Average$892FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$624Average$863FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$628Average$940FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$641Average$972FlexibilityNo cancel feeOn-time70%
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