$320+ Cheap flights from Portland (PDX) to Heathrow (LHR)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/10. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — LHR
Nov 8 — Nov 151
Round-trip
1 adult, Economy
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Find cheap flights from Portland to Heathrow with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Portland to London Heathrow are usually found in February or January, booked 83 days in advance, depart on a Monday or Sunday and return on a Wednesday
Cheap flight deals from Portland to Heathrow
Cheapest
Best
Last-minute
One-way
Cheapest flights from Portland to HeathrowExplore 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 October 9, 2026.
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 October 9, 2026.
This Mytrip deal was found by Cheapflights users on 10/6. 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.
Thu 12/32:45 pm -
2 stops22h 55m
Sun 12/136:40 am -
2 stops18h 20m
Deal found 10/6![Multiple Airlines logo]()
$745
This Mytrip deal was found by Cheapflights users on 10/5. 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 11/22:45 pm -
3 stops34h 50m
Mon 11/96:40 am -
2 stops18h 20m
Deal found 10/5![Multiple Airlines logo]()
$750
This Mytrip deal was found by Cheapflights users on 10/5. 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.
Thu 11/57:00 am -
3 stops30h 40m
Wed 11/116:40 pm -
3 stops34h 06m
Deal found 10/5![Multiple Airlines logo]()
$754
This Mytrip deal was found by Cheapflights users on 10/6. 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.
Tue 11/32:45 pm -
2 stops22h 55m
Tue 11/106:05 pm -
3 stops30h 55m
Deal found 10/6![Multiple Airlines logo]()
$767
This Mytrip deal was found by Cheapflights users on 10/6. 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 10/263:45 pm -
2 stops22h 50m
Mon 11/27:05 am -
2 stops17h 55m
Deal found 10/6![Multiple Airlines logo]()
$804
This Mytrip deal was found by Cheapflights users on 10/6. 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.
Tue 12/12:45 pm -
3 stops22h 55m
Mon 12/77:05 am -
2 stops17h 55m
Deal found 10/6![Multiple Airlines logo]()
$816
This Mytrip deal was found by Cheapflights users on 10/7. 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 11/92:45 pm -
2 stops34h 50m
Wed 11/256:30 am -
2 stops18h 30m
Deal found 10/7![Multiple Airlines logo]()
$819
This Mytrip deal was found by Cheapflights users on 10/7. 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.
Thu 11/52:45 pm -
3 stops34h 50m
Thu 11/127:50 pm -
3 stops29h 10m
Deal found 10/7![Multiple Airlines logo]()
$822
Best flights from Portland to HeathrowDiscover carefully curated flight deals from Portland to Heathrow that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 9, 2026.
Discover carefully curated flight deals from Portland to Heathrow that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 9, 2026.
This Delta deal was found by Cheapflights users on 10/7. 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 2/2811:10 am -
1 stop15h 30m
Wed 4/286:30 am -
1 stop12h 40m
Deal found 10/7![Delta logo]()
$889
This British Airways deal was found by Cheapflights users on 10/9. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/85:45 pm -
Nonstop9h 35m
Wed 2/241:35 pm -
Nonstop10h 15m
Deal found 10/9![British Airways logo]()
$912
This Scandinavian Airlines deal was found by Cheapflights users on 10/8. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/11:00 pm -
3 stops24h 35m
Wed 3/106:40 am -
2 stops22h 47m
Deal found 10/8![Scandinavian Airlines logo]()
$990
This United Airlines deal was found by Cheapflights users on 10/6. 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.
Fri 3/197:10 pm -
1 stop33h 40m
Sun 3/283:05 pm -
1 stop26h 20m
Deal found 10/6![United Airlines logo]()
$1,012
This Delta deal was found by Cheapflights users on 10/6. 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.
Wed 3/37:00 am -
1 stop15h 20m
Mon 3/86:30 am -
1 stop12h 50m
Deal found 10/6![Delta logo]()
$935
This Scandinavian Airlines deal was found by Cheapflights users on 10/9. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/610:00 am -
3 stops22h 00m
Sun 2/2110:20 am -
2 stops20h 06m
Deal found 10/9![Scandinavian Airlines logo]()
$990
This Delta deal was found by Cheapflights users on 10/9. 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.
Sat 2/69:45 pm -
1 stop27h 15m
Sun 2/216:30 am -
1 stop12h 50m
Deal found 10/9![Delta logo]()
$946
This Scandinavian Airlines deal was found by Cheapflights users on 10/6. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/11:00 pm -
3 stops24h 35m
Wed 2/107:05 am -
3 stops21h 51m
Deal found 10/6![Scandinavian Airlines logo]()
$994
This Delta deal was found by Cheapflights users on 10/9. 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.
Wed 12/26:35 am -
1 stop15h 50m
Fri 12/116:30 am -
1 stop12h 50m
Deal found 10/9![Delta logo]()
$954
This Scandinavian Airlines deal was found by Cheapflights users on 10/7. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/911:00 am -
3 stops23h 30m
Wed 11/257:05 am -
3 stops21h 51m
Deal found 10/7![Scandinavian Airlines logo]()
$1,012
This Delta deal was found by Cheapflights users on 10/9. 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.
Fri 2/59:40 am -
1 stop17h 00m
Sat 2/208:40 am -
2 stops19h 43m
Deal found 10/9![Delta logo]()
$994
Last-minute flights from Portland to HeathrowDiscover last-minute flight deals from Portland to Heathrow. Data last updated October 9, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Heathrow. Data last updated October 9, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 10/6. 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 10/263:45 pm -
2 stops22h 50m
Mon 11/27:05 am -
2 stops17h 55m
Deal found 10/6![Multiple Airlines logo]()
$804
This Mytrip deal was found by Cheapflights users on 10/5. 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 11/22:45 pm -
3 stops34h 50m
Mon 11/96:40 am -
2 stops18h 20m
Deal found 10/5![Multiple Airlines logo]()
$750
This Mytrip deal was found by Cheapflights users on 10/6. 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.
Tue 11/32:45 pm -
2 stops22h 55m
Tue 11/106:05 pm -
3 stops30h 55m
Deal found 10/6![Multiple Airlines logo]()
$767
This Mytrip deal was found by Cheapflights users on 10/5. 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.
Thu 11/57:00 am -
3 stops30h 40m
Wed 11/116:40 pm -
3 stops34h 06m
Deal found 10/5![Multiple Airlines logo]()
$754
This Mytrip deal was found by Cheapflights users on 10/7. 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.
Thu 11/52:45 pm -
3 stops34h 50m
Thu 11/127:50 pm -
3 stops29h 10m
Deal found 10/7![Multiple Airlines logo]()
$822
This Gotogate deal was found by Cheapflights users on 10/6. 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.
Thu 11/52:45 pm -
1 stop12h 05m
Thu 11/128:35 pm -
1 stop28h 25m
Deal found 10/6![Icelandair logo]()
$833
This Mytrip deal was found by Cheapflights users on 10/7. 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 11/92:45 pm -
2 stops34h 50m
Wed 11/256:30 am -
2 stops18h 30m
Deal found 10/7![Multiple Airlines logo]()
$819
This Gotogate deal was found by Cheapflights users on 10/7. 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.
Mon 11/92:45 pm -
1 stop20h 45m
Wed 11/2512:15 pm -
1 stop12h 45m
Deal found 10/7![Icelandair logo]()
$834
One-way flights from Portland to HeathrowSearch for one-way flight options from Portland to Heathrow. Find affordable one-way fares based on user searches. Data last updated October 9, 2026.
Search for one-way flight options from Portland to Heathrow. Find affordable one-way fares based on user searches. Data last updated October 9, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/9. 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 1/1010:22 am -
2 stops42h 28m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/9![Multiple Airlines logo]()
$320
This Expedia deal was found by Cheapflights users on 10/7. 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.
Wed 1/65:45 pm -
Nonstop9h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/7![British Airways logo]()
$324
This Expedia deal was found by Cheapflights users on 10/5. 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.
Sun 2/75:45 pm -
Nonstop9h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/5![Iberia logo]()
$325
This oojo deal was found by Cheapflights users on 10/9. 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 11/102:45 pm -
1 stop20h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/9![Icelandair logo]()
$329
This oojo deal was found by Cheapflights users on 10/7. 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 12/12:45 pm -
1 stop20h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/7![Icelandair logo]()
$331
This Cheapflightsfares deal was found by Cheapflights users on 10/8. 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.
Wed 3/105:45 pm -
Nonstop9h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/8![British Airways logo]()
$332
This FlightHub deal was found by Cheapflights users on 10/5. 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.
Sun 3/213:15 pm -
1 stop13h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/5![Multiple Airlines logo]()
$333
This British Airways deal was found by Cheapflights users on 10/9. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/68:25 pm -
Nonstop9h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/9![British Airways logo]()
$335
This Kiwi.com deal was found by Cheapflights users on 10/9. 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.
Wed 4/71:39 pm -
2 stops34h 16m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/9![SWISS logo]()
$338
This Delta deal was found by Cheapflights users on 10/8. 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 1/57:00 am -
1 stop15h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/8![Delta logo]()
$339
Find 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 October 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $745 (Mytrip) |
One-way from | $324 (Expedia) |
Popular in | June |
Cheapest in | February |
Average price | $992 |
Good round-trip deal | $812 or less |
Good one-way deal | $432 or less |
Cheapflights Fare Finder
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 7,457,451 searches. Data last updated October 9, 2026.
Use the filters below to find and compare flights from Portland to London Heathrow Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
PortlandLondon
PDX Portland - LHR London Heathrow
PDXLHR
Portland
Mon 1/11
5:45 pm-11:20 am
Nonstop9h 35m
London Heathrow
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$335
PortlandLondon
PDX Portland - LHR London Heathrow
PDXLHR
Portland
Wed 3/17
10:00 am-11:50 am
1 stop18h 50m
London Heathrow
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$335
PortlandLondon
PDX Portland - LHR London Heathrow
PDXLHR
Portland
Sun 1/10
7:10 pm-11:50 am
1 stop32h 40m
London Heathrow
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$335
PortlandLondon
PDX Portland - LHR London Heathrow
PDXLHR
Portland
Wed 3/17
3:15 pm-11:50 am
1 stop13h 35m
London Heathrow
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$335
PortlandLondon
PDX Portland - LHR London Heathrow
PDXLHR
Portland
Wed 4/7
3:15 pm-1:20 pm
1 stop14h 05m
London Heathrow
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$335
PortlandLondon
PDX Portland - LHR London Heathrow
PDXLHR
Portland
Tue 1/5
7:00 am-6:20 am
1 stop15h 20m
London Heathrow
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$339
PortlandLondon
PDX Portland - LHR London Heathrow
PDXLHR
Portland
Sat 4/3
4:05 pm-9:20 pm
3 stops21h 15m
London Heathrow
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$345
PortlandLondon
PDX Portland - LHR London Heathrow
PDXLHR
Portland
Sat 1/9
1:18 pm-8:35 pm
3 stops23h 17m
London Heathrow
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$345
PortlandLondon
PDX Portland - LHR London Heathrow
PDXLHR
Portland
Wed 1/6
5:45 pm-11:20 am
Nonstop9h 35m
London Heathrow
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$350
PortlandLondon
PDX Portland - LHR London Heathrow
PDXLHR
Portland
Thu 11/12
7:34 am-12:50 pm
2 stops45h 16m
London Heathrow
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$439
Showing 1-10 of 21 resultsSorted by cheapest first
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 October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*1 star | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- 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.
PDX-LHR
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 Portland to London Heathrow Airport
Prices
Airlines
More
How far ahead should I book a flight from Portland to London Heathrow Airport?
Booking 82 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, February is the cheapest month in which you can book a flight from Portland to London Heathrow Airport (average of $702). Flying from Portland to London Heathrow Airport in June is currently the most expensive (average of $1,359). 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 October 9, 2026.
When flying from Portland to London Heathrow Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
What’s the top layover airport for flights from Portland to London Heathrow Airport?
Share of 1-stop round-trip flights from Portland to London Heathrow Airport chosen by Cheapflights users in the past 12 months, using the same layover each way.
Boston (BOS) – chosen by Cheapflights users on 83% of 1-stop itineraries from Portland to London Heathrow Airport on Cheapflights.
What’s the cheapest layover airport for flights from Portland to London Heathrow Airport?
Average round-trip fare for 1-stop flights from Portland to London Heathrow Airport, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Boston (BOS) is the most affordable 1-stop option, with an average round-trip price of $939.
What’s the fastest layover option from Portland to London Heathrow Airport?
Shortest average travel time for 1-stop one-way flights from Portland to London Heathrow Airport, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Reykjavik (KEF) have the shortest average one-way travel time for 1-stop routes: 12h 05m.
Which airport typically offers the quickest layover for flights from Portland to London Heathrow Airport?
Average layover duration for 1-stop one-way flights from Portland to London Heathrow Airport, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Reykjavik (KEF) offer the fastest connection on this route, with an average layover time of 1h 20m.
The best insider tips for Portland to London Heathrow Airport flights
AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Portland to London Heathrow Airport trip
Our travel experts
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 October 9, 2026.
Peruse reviews from past customers who have flown with Virgin Atlantic,American Airlines, andIberia from Portland to London Heathrow Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
7.7
Comfort
7.3
Entertainment
7.5
Food
6.9
Overall
7.5
Crew
8.1
Reviews
1 / 20
6.0
GoodPratap,Aug 2025
JFK - LHR
Boarding
7.7
Comfort
7.3
Entertainment
7.5
Food
6.9
Overall
7.5
Crew
8.1
Reviews
1 / 20
6.0
GoodPratap,Aug 2025
JFK - LHR
Boarding
7.7
Comfort
7.3
Entertainment
7.5
Food
6.9
Overall
7.5
Crew
8.1
Reviews
1 / 20
6.0
GoodPratap,Aug 2025
JFK - LHR
Boarding
7.7
Comfort
7.3
Entertainment
7.5
Food
6.9
Overall
7.5
Crew
8.1
Reviews
1 / 20
6.0
GoodPratap,Aug 2025
JFK - LHR
Boarding
7.7
Comfort
7.3
Entertainment
7.5
Food
6.9
Overall
7.5
Crew
8.1
Reviews
1 / 20
6.0
GoodPratap,Aug 2025
JFK - LHR
Boarding
7.7
Comfort
7.3
Entertainment
7.5
Food
6.9
Overall
7.5
Crew
8.1
Reviews
1 / 20
6.0
GoodPratap,Aug 2025
JFK - LHR
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.
Traveling to a place near London Heathrow Airport?
Book flights to London Heathrow Airport if you plan to visit one of these locationsIlford
Dorking
Gatwick
Hounslow
Wembley
Harrow
Southend-on-Sea
Basingstoke
Watford
Northampton
Dartford
Winchester
Croydon
Chipping Norton
Kingston upon Thames
Eastbourne
Slough
Stansted
Sutton
Luton
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Other flights to Heathrow
Explore flights to Heathrow departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 9, 2026.
Portland and Heathrow flights
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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 7,457,451 searches. Data last updated October 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$499 | Average$763 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$578 | Average$1,139 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$596 | Average$932 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$604 | Average$957 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$630 | Average$1,145 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$637 | Average$1,003 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$641 | Average$984 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$646 | Average$1,054 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$653 | Average$1,003 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$676 | Average$1,183 | FlexibilityNo cancel fee | On-time69% |