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$302+ 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 2/25. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — LHR
feb. 25 — mar. 41
mar. 2/25
mar. 3/4
1 adult, Economy
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1. Tell us where you want to go
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The best prices from Portland to London Heathrow are usually found in April or November, 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 febrero 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$609
(Cheapflightsfares)

One-way from

$302
(Trip.com)

Popular in

June

Cheapest in

April

Average price

$772

Good round-trip deal

$731 or less

Good one-way deal

$519 or less
Provider with most accurate pricing for Portland-London Heathrow flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-London Heathrow flights.
Search Deals
From Portland to London Heathrow
Search Deals
One-way flight from Portland to London Heathrow
Search Deals
Highest demand for flights based on searches. 22% potential increase in price ($258 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($42 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2025
Search Deals
Price to beat on a round-trip flight from Portland to London Heathrow.
Search Deals
Price to beat on a one-way flight from Portland to London Heathrow.
Search Deals

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 febrero 20, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 2/18. 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.
mar. 3/46:30 pmPDX - LHR
Nonstop9h 40mIberia
mar. 3/188:20 amLHR - PDX
1 stop21h 40mIberia
Deal found 2/18$609
This Cheapflightsfares deal was found by Cheapflights users on 2/19. 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.
dom. 3/97:30 pmPDX - LHR
Nonstop9h 40mBritish Airways
mar. 3/182:20 pmLHR - PDX
Nonstop10h 15mBritish Airways
Deal found 2/19$619
This Gotogate deal was found by Cheapflights users on 2/19. 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.
mié. 4/3010:10 amPDX - LHR
2 stops17h 40mMultiple Airlines
jue. 5/86:00 amLHR - PDX
2 stops20h 45mMultiple Airlines
Deal found 2/19$620
This World Air Fares deal was found by Cheapflights users on 2/20. 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 World Air Fares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 4/203:10 pmPDX - LHR
1 stop15h 05mKLM
mié. 4/306:30 amLHR - PDX
1 stop12h 50mKLM
Deal found 2/20$621
This Delta deal was found by Cheapflights users on 2/19. 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.
lun. 3/1012:59 amPDX - LHR
1 stop23h 06mDelta
mar. 3/186:30 amLHR - PDX
1 stop12h 55mDelta
Deal found 2/19$622
This CrystalTravel deal was found by Cheapflights users on 2/20. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 4/210:10 amPDX - LHR
2 stops15h 50mAir Canada
mié. 4/910:15 amLHR - PDX
2 stops19h 55mAir Canada
Deal found 2/20$625
This American Airlines deal was found by Cheapflights users on 2/19. 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.
mié. 3/53:43 pmPDX - LHR
1 stop15h 42mAmerican Airlines
vie. 3/142:20 pmLHR - PDX
Nonstop10h 15mAmerican Airlines
Deal found 2/19$636
This Lufthansa deal was found by Cheapflights users on 2/19. 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.
lun. 4/2810:10 amPDX - LHR
1 stop19h 10mLufthansa
mar. 5/66:30 amLHR - PDX
2 stops20h 15mLufthansa
Deal found 2/19$638
This oojo deal was found by Cheapflights users on 2/19. 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.
mié. 10/223:20 pmPDX - LHR
1 stop12h 35mIcelandair
mar. 10/288:40 pmLHR - PDX
1 stop28h 20mIcelandair
Deal found 2/19$652
This United deal was found by Cheapflights users on 2/19. 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.
mié. 3/197:45 amPDX - LHR
2 stops22h 45mUnited Airlines
mar. 3/253:00 pmLHR - PDX
2 stops34h 48mUnited Airlines
Deal found 2/19$658
This Flysmarter deal was found by Cheapflights users on 2/19. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 3/49:45 amPDX - LHR
2 stops23h 55mScandinavian Airlines
mar. 3/116:40 amLHR - PDX
2 stops22h 52mScandinavian Airlines
Deal found 2/19$677
This Air France deal was found by Cheapflights users on 2/19. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 4/32:00 pmPDX - LHR
1 stop16h 15mAir France
vie. 4/1811:45 amLHR - PDX
1 stop18h 24mAir France
Deal found 2/19$729

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 febrero 20, 2025.

Fly from

Portland

Fly to

Heathrow

Route

Depart

Return

Price

PortlandLondon

PDX - LHR

PDXLHR

Portland

mar. 3/4

6:30 pm-12:10 pm

Nonstop9h 40m

London Heathrow

mar. 3/18

8:20 am-11:00 pm

1 stop21h 40m

$609

PortlandLondon

PDX - LHR

PDXLHR

Portland

dom. 3/9

7:30 pm-12:10 pm

Nonstop9h 40m

London Heathrow

mar. 3/18

2:20 pm-5:35 pm

Nonstop10h 15m

$619

PortlandLondon

PDX - LHR

PDXLHR

Portland

mié. 4/30

10:10 am-11:50 am

2 stops17h 40m

London Heathrow

jue. 5/8

6:00 am-6:45 pm

2 stops20h 45m

$620

PortlandLondon

PDX - LHR

PDXLHR

Portland

dom. 4/20

3:10 pm-2:15 pm

1 stop15h 05m

London Heathrow

mié. 4/30

6:30 am-11:20 am

1 stop12h 50m

$621

PortlandLondon

PDX - LHR

PDXLHR

Portland

lun. 3/10

12:59 am-7:05 am

1 stop23h 06m

London Heathrow

mar. 3/18

6:30 am-12:25 pm

1 stop12h 55m

$622

PortlandLondon

PDX - LHR

PDXLHR

Portland

mié. 4/2

3:25 pm-1:20 pm

1 stop13h 55m

London Heathrow

mié. 4/9

10:15 am-10:10 pm

2 stops19h 55m

$625

PortlandLondon

PDX - LHR

PDXLHR

Portland

mié. 3/5

3:43 pm-3:25 pm

1 stop15h 42m

London Heathrow

vie. 3/14

2:20 pm-5:35 pm

Nonstop10h 15m

$636

PortlandLondon

PDX - LHR

PDXLHR

Portland

lun. 4/28

3:25 pm-1:20 pm

1 stop13h 55m

London Heathrow

jue. 5/8

6:30 am-10:55 pm

2 stops24h 25m

$638

PortlandLondon

PDX - LHR

PDXLHR

Portland

mar. 3/4

9:45 am-5:40 pm

2 stops23h 55m

London Heathrow

mar. 3/11

6:40 am-10:32 pm

2 stops22h 52m

$677

PortlandLondon

PDX - LHR

PDXLHR

Portland

dom. 4/27

10:10 am-11:50 am

2 stops17h 40m

London Heathrow

vie. 5/16

2:10 pm-6:45 pm

1 stop12h 35m

$679

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

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 February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star
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*3 stars
oojoPrice Accuracy3 starsTrust Score*2 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 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 February 14, 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 $1,136). 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 febrero 20, 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 22% 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 Thursday afternoons when fares are most often at their lowest. Saturday 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 febrero 20, 2025.
Read reviews from past customers who have flown Delta, Alaska Airlines 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
8,220 reviews

Entertainment

7.9

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

Comfort

8.0

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
8,220 reviews
Delta
8.0
Very good
8,220 reviews

Entertainment

7.9

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

Comfort

8.0

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
9,692 reviews
Delta
8.0
Very good
8,220 reviews

Entertainment

7.9

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

Comfort

8.0

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
1,333 reviews
Delta
8.0
Very good
8,220 reviews

Entertainment

7.9

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

Comfort

8.0

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
1,273 reviews
Delta
8.0
Very good
8,220 reviews

Entertainment

7.9

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

Comfort

8.0

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.

Virgin Atlantic
7.5
Good
654 reviews
Delta
8.0
Very good
8,220 reviews

Entertainment

7.9

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

Comfort

8.0

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 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 1 outbound flight 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 ($609), British Airways ($619), and KLM ($621) offers the cheapest pricing from Portland to London Heathrow Airport. Iberia is priced at 31% 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 $396 on Icelandair. Other airlines that offer cheap prices include British Airways from $417 and Lufthansa from $421 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 (91%), American Airlines (82%), Alaska Airlines (82%).

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

    On average you can expect to pay $1,682 for a flight from Portland to London Heathrow Airport. The cheapest flight overall is $416 while the most popular route, (Portland - London Heathrow) is currently priced at $609.

  • 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 $44 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 $1,136). 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
Hounslow
Hayes
Thornton Heath
Harrow
Luton
Wembley
Horley
Canterbury
Northampton
Gatwick
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 febrero 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$492Average$782FlexibilityNo cancel feeOn-time76%
IberiaCheapest$600Average$799FlexibilityNo cancel feeOn-time77%
DeltaCheapest$610Average$919FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$613Average$949FlexibilityNo cancel feeOn-time67%
KLMCheapest$617Average$981FlexibilityNo cancel feeOn-time75%
FinnairCheapest$629Average$788FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$634Average$948FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$639Average$858FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$640Average$957FlexibilityNo cancel feeOn-time70%
Virgin AtlanticCheapest$652Average$903FlexibilityNo cancel feeOn-time72%
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