$285+ 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 9/21. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — LHR
Jul 8 — Jul 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 40 days in advance, depart on a Monday or Tuesday 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 June 8, 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 June 8, 2026.
This Orbitz deal was found by Cheapflights users on 6/4. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/67:30 pm
PDX
- LHR
Nonstop9h 30m
Multiple Airlines
Mon 9/149:25 pm
LHR
- PDX
1 stop28h 30m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$922
This Trip.com deal was found by Cheapflights users on 6/6. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/217:05 pm
PDX
- LHR
1 stop32h 50m
Icelandair
Wed 9/161:05 pm
LHR
- PDX
1 stop12h 50m
Icelandair
Deal found 6/6![Icelandair logo]()
$923
This Justfly.com deal was found by Cheapflights users on 6/5. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/47:25 am
PDX
- LHR
1 stop15h 25m
British Airways
Tue 10/67:50 am
LHR
- PDX
2 stops41h 36m
British Airways
Deal found 6/5![British Airways logo]()
$926
This Delta deal was found by Cheapflights users on 6/3. 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 9/137:00 am
PDX
- LHR
1 stop15h 45m
Delta
Mon 9/216:30 am
LHR
- PDX
1 stop12h 40m
Delta
Deal found 6/3![Delta logo]()
$927
This Trip.com deal was found by Cheapflights users on 6/8. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/25:50 pm
PDX
- LHR
1 stop13h 45m
Virgin Atlantic
Tue 8/188:55 pm
LHR
- PDX
1 stop22h 15m
Virgin Atlantic
Deal found 6/8![Virgin Atlantic logo]()
$928
This Delta deal was found by Cheapflights users on 6/6. 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.
Tue 10/131:05 pm
PDX
- LHR
1 stop11h 55m
Delta
Sun 10/186:30 am
LHR
- PDX
1 stop12h 40m
Delta
Deal found 6/6![Delta logo]()
$931
This Delta deal was found by Cheapflights users on 6/3. 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.
Thu 10/159:40 am
PDX
- LHR
2 stops16h 50m
Delta
Thu 10/226:30 am
LHR
- PDX
1 stop12h 40m
Delta
Deal found 6/3![Delta logo]()
$932
This Gotogate deal was found by Cheapflights users on 6/7. 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.
Sun 8/167:05 pm
PDX
- LHR
1 stop17h 15m
Icelandair
Fri 9/119:25 pm
LHR
- PDX
1 stop22h 20m
Icelandair
Deal found 6/7![Icelandair logo]()
$933
This Mytrip deal was found by Cheapflights users on 6/7. 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.
Wed 9/27:05 pm
PDX
- LHR
2 stops18h 30m
Multiple Airlines
Wed 9/231:05 pm
LHR
- PDX
1 stop12h 50m
Multiple Airlines
Deal found 6/7![Multiple Airlines logo]()
$934
This FlightHub deal was found by Cheapflights users on 6/3. 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.
Mon 9/281:25 pm
PDX
- LHR
2 stops21h 05m
Scandinavian Airlines
Mon 10/126:40 am
LHR
- PDX
2 stops23h 46m
Scandinavian Airlines
Deal found 6/3![Scandinavian Airlines logo]()
$935
This Delta deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2811:20 am
PDX
- LHR
2 stops15h 25m
Delta
Sat 10/106:30 am
LHR
- PDX
1 stop12h 40m
Delta
Deal found 6/3![Delta logo]()
$936
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 June 8, 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 June 8, 2026.
This Delta deal was found by Cheapflights users on 6/5. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/211:35 pm
PDX
- LHR
2 stops16h 10m
Delta
Mon 9/286:30 am
LHR
- PDX
2 stops17h 35m
Delta
Deal found 6/5![Delta logo]()
$942
This Scandinavian Airlines deal was found by Cheapflights users on 6/4. 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.
Tue 9/1512:36 pm
PDX
- LHR
2 stops21h 54m
Scandinavian Airlines
Tue 9/227:05 am
LHR
- PDX
3 stops18h 05m
Scandinavian Airlines
Deal found 6/4![Scandinavian Airlines logo]()
$1,005
This Virgin Atlantic deal was found by Cheapflights users on 6/7. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/310:35 pm
PDX
- LHR
1 stop13h 35m
Virgin Atlantic
Wed 8/127:15 pm
LHR
- PDX
1 stop23h 55m
Virgin Atlantic
Deal found 6/7![Virgin Atlantic logo]()
$1,012
This United deal was found by Cheapflights users on 6/7. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/31:02 pm
PDX
- LHR
1 stop14h 33m
Multiple Airlines
Wed 8/126:00 am
LHR
- PDX
2 stops21h 11m
Multiple Airlines
Deal found 6/7![Multiple Airlines logo]()
$1,012
This British Airways deal was found by Cheapflights users on 6/4. 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.
Wed 8/197:30 pm
PDX
- LHR
Nonstop9h 30m
British Airways
Fri 8/283:40 pm
LHR
- PDX
Nonstop10h 00m
British Airways
Deal found 6/4![British Airways logo]()
$1,031
This Delta deal was found by Cheapflights users on 6/7. 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.
Sat 9/1210:05 pm
PDX
- LHR
1 stop14h 05m
Delta
Sun 9/206:15 am
LHR
- PDX
2 stops17h 50m
Delta
Deal found 6/7![Delta logo]()
$944
This Scandinavian Airlines deal was found by Cheapflights users on 6/3. 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.
Tue 8/2511:17 am
PDX
- LHR
2 stops22h 23m
Scandinavian Airlines
Mon 9/77:50 pm
LHR
- PDX
3 stops28h 43m
Scandinavian Airlines
Deal found 6/3![Scandinavian Airlines logo]()
$1,005
This British Airways deal was found by Cheapflights users on 6/6. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/127:30 pm
PDX
- LHR
Nonstop9h 30m
British Airways
Wed 10/281:45 pm
LHR
- PDX
Nonstop10h 10m
British Airways
Deal found 6/6![British Airways logo]()
$1,038
This Delta deal was found by Cheapflights users on 6/6. 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.
Sun 10/119:40 am
PDX
- LHR
2 stops17h 05m
Delta
Sat 10/246:30 am
LHR
- PDX
2 stops16h 35m
Delta
Deal found 6/6![Delta logo]()
$946
This Scandinavian Airlines deal was found by Cheapflights users on 6/5. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/197:00 am
PDX
- LHR
2 stops23h 35m
Scandinavian Airlines
Wed 9/306:40 am
LHR
- PDX
3 stops23h 37m
Scandinavian Airlines
Deal found 6/5![Scandinavian Airlines logo]()
$1,021
This Delta deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/241:05 pm
PDX
- LHR
1 stop11h 55m
Delta
Sun 8/306:30 am
LHR
- PDX
1 stop12h 40m
Delta
Deal found 6/3![Delta logo]()
$1,012
This Delta deal was found by Cheapflights users on 6/3. 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 8/110:40 pm
PDX
- LHR
1 stop23h 40m
Delta
Thu 8/139:55 am
LHR
- PDX
2 stops20h 07m
Delta
Deal found 6/3![Delta logo]()
$1,022
Last-minute flights from Portland to HeathrowDiscover last-minute flight deals from Portland to Heathrow. Data last updated June 8, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Heathrow. Data last updated June 8, 2026 and is based on user searches.
This Cheapflightsfares deal was found by Cheapflights users on 6/6. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/53:30 pm
PDX
- LHR
1 stop13h 50m
Lufthansa
Wed 8/199:00 am
LHR
- PDX
2 stops21h 45m
Lufthansa
Deal found 6/6![Lufthansa logo]()
$996
This Justfly.com deal was found by Cheapflights users on 6/7. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/53:30 pm
PDX
- LHR
1 stop13h 50m
Multiple Airlines
Wed 8/198:40 am
LHR
- PDX
2 stops18h 31m
Multiple Airlines
Deal found 6/7![Multiple Airlines logo]()
$1,002
This Air Canada deal was found by Cheapflights users on 6/7. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/177:45 pm
PDX
- LHR
1 stop33h 35m
Air Canada
Thu 9/178:45 am
LHR
- PDX
2 stops18h 21m
Air Canada
Deal found 6/7![Air Canada logo]()
$1,003
This Air Canada deal was found by Cheapflights users on 6/7. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/177:45 pm
PDX
- LHR
2 stops26h 45m
Multiple Airlines
Thu 9/178:45 am
LHR
- PDX
2 stops18h 21m
Multiple Airlines
Deal found 6/7![Multiple Airlines logo]()
$1,006
This Delta deal was found by Cheapflights users on 6/8. 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.
Fri 7/1710:40 pm
PDX
- LHR
1 stop13h 30m
Delta
Thu 9/176:30 am
LHR
- PDX
1 stop12h 40m
Delta
Deal found 6/8![Delta logo]()
$1,007
This Cheapflightsfares deal was found by Cheapflights users on 6/7. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/183:30 pm
PDX
- LHR
1 stop12h 25m
Icelandair
Mon 8/179:25 pm
LHR
- PDX
1 stop22h 20m
Icelandair
Deal found 6/7![Icelandair logo]()
$1,005
This Vliegwinkel deal was found by Cheapflights users on 6/4. 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 Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/277:45 pm
PDX
- LHR
1 stop33h 35m
Multiple Airlines
Wed 8/123:05 pm
LHR
- PDX
1 stop26h 26m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$978
This Cheapflightsfares deal was found by Cheapflights users on 6/3. 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 7/273:30 pm
PDX
- LHR
1 stop13h 50m
Lufthansa
Wed 8/126:30 am
LHR
- PDX
2 stops20h 41m
Lufthansa
Deal found 6/3![Lufthansa logo]()
$999
This Vliegwinkel deal was found by Cheapflights users on 6/4. 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 Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/2710:10 am
PDX
- LHR
2 stops15h 50m
Air Canada
Wed 8/128:40 am
LHR
- PDX
2 stops18h 31m
Air Canada
Deal found 6/4![Air Canada logo]()
$1,001
This FlightHub deal was found by Cheapflights users on 6/5. 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.
Wed 7/2910:10 am
PDX
- LHR
2 stops17h 40m
Air Canada
Tue 8/181:50 pm
LHR
- PDX
2 stops37h 21m
Air Canada
Deal found 6/5![Air Canada logo]()
$953
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 June 8, 2026.
Search for one-way flight options from Portland to Heathrow. Find affordable one-way fares based on user searches. Data last updated June 8, 2026.
This Trip.com deal was found by Cheapflights users on 6/5. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/213:30 pm
PDX
- LHR
2 stops16h 55m
Multiple Airlines
Deal found 6/5![Multiple Airlines logo]()
$285
This Trip.com deal was found by Cheapflights users on 6/5. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/27:05 pm
PDX
- LHR
2 stops18h 30m
Multiple Airlines
Deal found 6/5![Multiple Airlines logo]()
$297
This Kiwi.com deal was found by Cheapflights users on 6/4. 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.
Sat 10/173:30 pm
PDX
- LHR
2 stops34h 05m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$306
This Kiwi.com deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/32:45 pm
PDX
- LHR
2 stops34h 50m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$307
This Kiwi.com deal was found by Cheapflights users on 6/4. 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 10/213:30 pm
PDX
- LHR
2 stops22h 05m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$309
This Kiwi.com deal was found by Cheapflights users on 6/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/47:05 pm
PDX
- LHR
2 stops30h 30m
Multiple Airlines
Deal found 6/7![Multiple Airlines logo]()
$314
This oojo deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/247:05 pm
PDX
- LHR
1 stop17h 15m
Icelandair
Deal found 6/4![Icelandair logo]()
$315
This Kiwi.com deal was found by Cheapflights users on 6/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/12:45 pm
PDX
- LHR
2 stops34h 50m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$318
This Kiwi.com deal was found by Cheapflights users on 6/4. 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.
Sat 11/282:45 pm
PDX
- LHR
2 stops34h 50m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$319
This Mytrip deal was found by Cheapflights users on 6/5. 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 10/123:30 pm
PDX
- LHR
1 stop12h 25m
Icelandair
Deal found 6/5![Icelandair logo]()
$321
This oojo deal was found by Cheapflights users on 6/7. 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.
Thu 10/13:30 pm
PDX
- LHR
1 stop20h 50m
Icelandair
Deal found 6/7![Icelandair logo]()
$325
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 June 8, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $922 (Kiwi.com) |
One-way from | $285 (Trip.com) |
Popular in | June |
Cheapest in | February |
Average price | $1,283 |
Good round-trip deal | $1,008 or less |
Good one-way deal | $384 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 2,558,603 searches. Data last updated June 8, 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
PortlandLondon
PDX - LHR
PDXLHR
Portland
Mon 9/21
1:35 pm-1:45 pm
2 stops16h 10m
London Heathrow
Mon 9/28
6:30 am-4:05 pm
2 stops17h 35m
$942
PortlandLondon
PDX - LHR
PDXLHR
Portland
Sat 9/12
10:05 pm-8:10 pm
1 stop14h 05m
London Heathrow
Sun 9/20
6:15 am-4:05 pm
2 stops17h 50m
$944
PortlandLondon
PDX - LHR
PDXLHR
Portland
Sun 10/11
9:40 am-10:45 am
2 stops17h 05m
London Heathrow
Sat 10/24
6:30 am-3:05 pm
2 stops16h 35m
$946
PortlandLondon
PDX - LHR
PDXLHR
Portland
Tue 9/15
12:36 pm-6:30 pm
2 stops21h 54m
London Heathrow
Tue 9/22
7:05 am-5:10 pm
3 stops18h 05m
$1,005
PortlandLondon
PDX - LHR
PDXLHR
Portland
Tue 8/25
11:17 am-5:40 pm
2 stops22h 23m
London Heathrow
Mon 9/7
7:50 pm-4:33 pm
3 stops28h 43m
$1,005
PortlandLondon
PDX - LHR
PDXLHR
Portland
Mon 8/3
10:35 pm-8:10 pm
1 stop13h 35m
London Heathrow
Wed 8/12
7:15 pm-11:10 am
1 stop23h 55m
$1,012
PortlandLondon
PDX - LHR
PDXLHR
Portland
Mon 8/3
1:02 pm-11:35 am
1 stop14h 33m
London Heathrow
Wed 8/12
6:00 am-7:11 pm
2 stops21h 11m
$1,012
PortlandLondon
PDX - LHR
PDXLHR
Portland
Mon 8/24
1:05 pm-9:00 am
1 stop11h 55m
London Heathrow
Sun 8/30
6:30 am-11:10 am
1 stop12h 40m
$1,012
PortlandLondon
PDX - LHR
PDXLHR
Portland
Sat 9/19
7:00 am-2:35 pm
2 stops23h 35m
London Heathrow
Wed 9/30
6:40 am-10:17 pm
3 stops23h 37m
$1,021
PortlandLondon
PDX - LHR
PDXLHR
Portland
Sat 8/1
10:40 pm-6:20 am
1 stop23h 40m
London Heathrow
Thu 8/13
9:55 am-10:02 pm
2 stops20h 07m
$1,022
Showing 1-10 of 24 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 June.
| 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 Accuracy3 stars | Trust Score*3 stars |
- 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
How far ahead should I book a flight from Portland to London Heathrow Airport?
Booking 39 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 $676). Flying from Portland to London Heathrow Airport in June is currently the most expensive (average of $1,283). 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 June 8, 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.
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 June 8, 2026.
Peruse reviews from past customers who have flown with Delta,Virgin Atlantic, andAmerican Airlines 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.
Comfort
7.8
Boarding
8.1
Entertainment
7.8
Overall
7.9
Crew
8.5
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Boarding
8.1
Entertainment
7.8
Overall
7.9
Crew
8.5
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Boarding
8.1
Entertainment
7.8
Overall
7.9
Crew
8.5
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Boarding
8.1
Entertainment
7.8
Overall
7.9
Crew
8.5
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Boarding
8.1
Entertainment
7.8
Overall
7.9
Crew
8.5
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Boarding
8.1
Entertainment
7.8
Overall
7.9
Crew
8.5
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
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
Hounslow
Winchester
Croydon
Gatwick
Southend-on-Sea
Wembley
Harrow
Eastleigh
Dartford
Dover
Orpington
Watford
Northampton
Chipping Norton
Hayes
Kingston upon Thames
Eastbourne
Slough
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Alternative routes for Portland to Heathrow
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Complete your trip
Complete your trip to Heathrow by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Portland to Heathrow by cabin class
Find flights from Portland to Heathrow, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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 June 8, 2026.
Portland and Heathrow flights
Browse other Portland and Heathrow flight options. Last updated on June 8, 2026.
Other flights from Portland
Browse through other flights departing from Portland. Flights are based on user searches made on Cheapflights and were last updated on June 8, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 June 8, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$490 | Average$641 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$525 | Average$969 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$551 | Average$889 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$558 | Average$778 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$561 | Average$672 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$574 | Average$890 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$600 | Average$1,218 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$604 | Average$926 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$630 | Average$890 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$664 | Average$977 | FlexibilityNo cancel fee | On-time76% |