$275+ 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 7/29. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — LHR
Jul 13 — Jul 201
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 73 days in advance, depart on a Monday or Tuesday and return on a Wednesday
Cheap flight deals from Portland to Heathrow
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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 13, 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 13, 2026.
This Delta deal was found by Cheapflights users on 6/9. 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 10/310:00 pm
PDX
- LHR
1 stop14h 10m
Delta
Sat 10/106:30 am
LHR
- PDX
2 stops21h 28m
Delta
Deal found 6/9![Delta logo]()
$935
This Icelandair 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/293:30 pm
PDX
- LHR
1 stop12h 25m
Icelandair
Wed 9/21:05 pm
LHR
- PDX
1 stop12h 50m
Icelandair
Deal found 6/8![Icelandair logo]()
$936
This Icelandair 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/287:05 pm
PDX
- LHR
1 stop17h 15m
Icelandair
Tue 9/19:25 pm
LHR
- PDX
1 stop28h 30m
Icelandair
Deal found 6/8![Icelandair logo]()
$937
This FlightHub deal was found by Cheapflights users on 6/12. 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 9/217:30 pm
PDX
- LHR
Nonstop9h 30m
British Airways
Wed 9/3012:15 pm
LHR
- PDX
1 stop15h 21m
British Airways
Deal found 6/12![British Airways logo]()
$938
This Kiwi.com deal was found by Cheapflights users on 6/12. 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 9/27:05 pm
PDX
- LHR
1 stop17h 15m
Multiple Airlines
Wed 9/3010:20 am
LHR
- PDX
2 stops36h 07m
Multiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$939
This Delta deal was found by Cheapflights users on 6/10. 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 9/1311:10 am
PDX
- LHR
2 stops15h 20m
Delta
Mon 9/2811:45 am
LHR
- PDX
2 stops18h 17m
Delta
Deal found 6/10![Delta logo]()
$940
This Delta deal was found by Cheapflights users on 6/10. 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 9/89:40 am
PDX
- LHR
2 stops16h 50m
Delta
Sun 9/136:30 am
LHR
- PDX
2 stops17h 28m
Delta
Deal found 6/10![Delta logo]()
$941
This Delta deal was found by Cheapflights users on 6/9. 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 9/1210:05 pm
PDX
- LHR
1 stop14h 05m
Delta
Sun 9/206:15 am
LHR
- PDX
2 stops17h 50m
Delta
Deal found 6/9![Delta logo]()
$942
This Cheapflightsfares deal was found by Cheapflights users on 6/10. 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 9/910:10 am
PDX
- LHR
2 stops17h 40m
Lufthansa
Wed 9/236:30 am
LHR
- PDX
2 stops20h 36m
Lufthansa
Deal found 6/10![Lufthansa logo]()
$943
This FlightHub deal was found by Cheapflights users on 6/12. 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 9/13:30 pm
PDX
- LHR
1 stop12h 25m
Icelandair
Thu 10/19:25 pm
LHR
- PDX
1 stop28h 30m
Icelandair
Deal found 6/12![Icelandair logo]()
$945
This Alaska Airlines deal was found by Cheapflights users on 6/9. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/233:00 pm
PDX
- LHR
1 stop16h 05m
Alaska Airlines
Mon 9/285:00 pm
LHR
- PDX
1 stop13h 01m
Alaska Airlines
Deal found 6/9![Alaska Airlines logo]()
$946
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 13, 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 13, 2026.
This Virgin Atlantic deal was found by Cheapflights users on 6/11. 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 8/241:30 pm
PDX
- LHR
1 stop15h 35m
Virgin Atlantic
Tue 9/18:55 pm
LHR
- PDX
1 stop22h 15m
Virgin Atlantic
Deal found 6/11![Virgin Atlantic logo]()
$956
This Delta deal was found by Cheapflights users on 6/9. 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.
Mon 9/710:35 pm
PDX
- LHR
1 stop13h 35m
Delta
Sun 9/276:30 pm
LHR
- PDX
1 stop13h 24m
Delta
Deal found 6/9![Delta logo]()
$964
This Icelandair deal was found by Cheapflights users on 6/11. 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 Icelandair 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
Wed 8/199:25 pm
LHR
- PDX
1 stop22h 20m
Icelandair
Deal found 6/11![Icelandair logo]()
$968
This KLM deal was found by Cheapflights users on 6/10. 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.
Thu 8/61:30 pm
PDX
- LHR
1 stop15h 35m
KLM
Thu 8/276:30 am
LHR
- PDX
1 stop12h 40m
KLM
Deal found 6/10![KLM logo]()
$1,004
This Scandinavian Airlines 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/810:00 am
PDX
- LHR
2 stops23h 40m
Scandinavian Airlines
Fri 9/259:05 pm
LHR
- PDX
3 stops28h 05m
Scandinavian Airlines
Deal found 6/8![Scandinavian Airlines logo]()
$1,007
This Alaska Airlines deal was found by Cheapflights users on 6/12. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/195:41 pm
PDX
- LHR
1 stop13h 24m
Alaska Airlines
Sat 8/225:00 pm
LHR
- PDX
1 stop23h 11m
Alaska Airlines
Deal found 6/12![Alaska Airlines logo]()
$1,050
This British Airways deal was found by Cheapflights users on 6/12. 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.
Thu 8/276:27 am
PDX
- LHR
1 stop15h 53m
British Airways
Mon 10/123:40 pm
LHR
- PDX
Nonstop10h 00m
British Airways
Deal found 6/12![British Airways logo]()
$1,085
This Delta deal was found by Cheapflights users on 6/12. 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 8/1712:25 pm
PDX
- LHR
1 stop15h 45m
Delta
Sun 9/1311:40 am
LHR
- PDX
1 stop15h 01m
Delta
Deal found 6/12![Delta logo]()
$1,045
This Scandinavian Airlines 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/1712:23 pm
PDX
- LHR
2 stops17h 12m
Scandinavian Airlines
Thu 9/177:50 pm
LHR
- PDX
3 stops29h 20m
Scandinavian Airlines
Deal found 6/8![Scandinavian Airlines logo]()
$1,079
This British Airways deal was found by Cheapflights users on 6/12. 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
Mon 8/243:40 pm
LHR
- PDX
Nonstop10h 00m
British Airways
Deal found 6/12![British Airways logo]()
$1,127
This British Airways deal was found by Cheapflights users on 6/11. 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 7/207:30 pm
PDX
- LHR
Nonstop9h 30m
British Airways
Fri 8/2112:55 pm
LHR
- PDX
1 stop18h 14m
British Airways
Deal found 6/11![British Airways logo]()
$1,210
This British Airways deal was found by Cheapflights users on 6/12. 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 7/207:30 pm
PDX
- LHR
Nonstop9h 30m
British Airways
Tue 7/283:40 pm
LHR
- PDX
Nonstop10h 00m
British Airways
Deal found 6/12![British Airways logo]()
$1,253
Last-minute flights from Portland to HeathrowDiscover last-minute flight deals from Portland to Heathrow. Data last updated June 13, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Heathrow. Data last updated June 13, 2026 and is based on user searches.
This oojo deal was found by Cheapflights users on 6/10. 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 7/177:05 pm
PDX
- LHR
1 stop32h 50m
Icelandair
Thu 9/179:25 pm
LHR
- PDX
1 stop28h 30m
Icelandair
Deal found 6/10![Icelandair logo]()
$976
This Icelandair deal was found by Cheapflights users on 6/11. 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 Icelandair 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
Wed 8/199:25 pm
LHR
- PDX
1 stop22h 20m
Icelandair
Deal found 6/11![Icelandair logo]()
$968
This United Airlines deal was found by Cheapflights users on 6/11. 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.
Sat 7/1811:29 pm
PDX
- LHR
1 stop27h 11m
United Airlines
Thu 8/203:00 pm
LHR
- PDX
1 stop26h 31m
United Airlines
Deal found 6/11![United Airlines logo]()
$973
This Air Canada deal was found by Cheapflights users on 6/11. 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.
Sat 7/187:45 pm
PDX
- LHR
1 stop33h 35m
Air Canada
Thu 8/2010:15 am
LHR
- PDX
2 stops16h 56m
Air Canada
Deal found 6/11![Air Canada logo]()
$980
This KAYAK deal was found by Cheapflights users on 6/11. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/1910:10 am
PDX
- LHR
2 stops17h 40m
Lufthansa
Thu 8/206:30 am
LHR
- PDX
2 stops20h 41m
Lufthansa
Deal found 6/11![Lufthansa logo]()
$967
This Justfly.com deal was found by Cheapflights users on 6/11. 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.
Mon 7/203:30 pm
PDX
- LHR
2 stops21h 30m
Air Canada
Wed 8/191:50 pm
LHR
- PDX
2 stops37h 21m
Air Canada
Deal found 6/11![Air Canada logo]()
$952
This United Airlines deal was found by Cheapflights users on 6/11. 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.
Mon 7/205:15 am
PDX
- LHR
1 stop24h 55m
United Airlines
Wed 8/193:05 pm
LHR
- PDX
1 stop26h 26m
United Airlines
Deal found 6/11![United Airlines logo]()
$972
This KAYAK deal was found by Cheapflights users on 6/11. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/2110:10 am
PDX
- LHR
2 stops15h 50m
Lufthansa
Fri 8/218:30 am
LHR
- PDX
2 stops18h 41m
Lufthansa
Deal found 6/11![Lufthansa logo]()
$970
This oojo deal was found by Cheapflights users on 6/11. 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 7/217:30 pm
PDX
- LHR
Nonstop9h 30m
British Airways
Wed 8/192:25 pm
LHR
- PDX
1 stop16h 44m
British Airways
Deal found 6/11![British Airways logo]()
$982
This Delta deal was found by Cheapflights users on 6/11. 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 7/2211:15 am
PDX
- LHR
1 stop16h 50m
Delta
Thu 8/206:30 am
LHR
- PDX
2 stops18h 44m
Delta
Deal found 6/11![Delta logo]()
$966
This KAYAK deal was found by Cheapflights users on 6/11. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/221:14 pm
PDX
- LHR
2 stops20h 36m
SWISS
Wed 8/195:15 pm
LHR
- PDX
2 stops33h 56m
SWISS
Deal found 6/11![SWISS logo]()
$971
This Icelandair deal was found by Cheapflights users on 6/11. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/233:30 pm
PDX
- LHR
1 stop12h 25m
Icelandair
Wed 8/191:05 pm
LHR
- PDX
1 stop12h 50m
Icelandair
Deal found 6/11![Icelandair logo]()
$949
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 13, 2026.
Search for one-way flight options from Portland to Heathrow. Find affordable one-way fares based on user searches. Data last updated June 13, 2026.
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/297:05 pm
PDX
- LHR
1 stop17h 15m
Icelandair
Deal found 6/8![Icelandair logo]()
$275
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.
Sun 7/267:05 pm
PDX
- LHR
1 stop32h 50m
Icelandair
Deal found 6/8![Icelandair logo]()
$294
This Kiwi.com deal was found by Cheapflights users on 6/9. 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 7/227:05 pm
PDX
- LHR
1 stop32h 50m
Icelandair
Deal found 6/9![Icelandair logo]()
$295
This oojo deal was found by Cheapflights users on 6/12. 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 6/12![Icelandair logo]()
$304
This Kiwi.com deal was found by Cheapflights users on 6/9. 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 9/67:05 pm
PDX
- LHR
2 stops15h 45m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$309
This Kiwi.com deal was found by Cheapflights users on 6/12. 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 9/117:05 pm
PDX
- LHR
2 stops30h 30m
Multiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$311
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.
Fri 9/47:05 pm
PDX
- LHR
2 stops30h 30m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$314
This oojo deal was found by Cheapflights users on 6/13. 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 9/47:05 pm
PDX
- LHR
1 stop17h 15m
Icelandair
Deal found 6/13![Icelandair logo]()
$319
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 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $935 (Delta) |
One-way from | $275 (oojo) |
Popular in | June |
Cheapest in | February |
Average price | $1,358 |
Good round-trip deal | $1,016 or less |
Good one-way deal | $404 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 13, 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 8/24
1:30 pm-1:05 pm
1 stop15h 35m
London Heathrow
Tue 9/1
8:55 pm-11:10 am
1 stop22h 15m
$956
PortlandLondon
PDX - LHR
PDXLHR
Portland
Mon 9/7
10:35 pm-8:10 pm
1 stop13h 35m
London Heathrow
Sun 9/27
6:30 pm-11:54 pm
1 stop13h 24m
$964
PortlandLondon
PDX - LHR
PDXLHR
Portland
Sat 7/18
3:30 pm-11:55 am
1 stop12h 25m
London Heathrow
Wed 8/19
9:25 pm-11:45 am
1 stop22h 20m
$968
PortlandLondon
PDX - LHR
PDXLHR
Portland
Thu 8/6
1:30 pm-1:05 pm
1 stop15h 35m
London Heathrow
Thu 8/27
6:30 am-11:10 am
1 stop12h 40m
$1,004
PortlandLondon
PDX - LHR
PDXLHR
Portland
Tue 9/8
10:00 am-5:40 pm
2 stops23h 40m
London Heathrow
Fri 9/25
9:05 pm-5:10 pm
3 stops28h 05m
$1,007
PortlandLondon
PDX - LHR
PDXLHR
Portland
Mon 8/17
12:25 pm-12:10 pm
1 stop15h 45m
London Heathrow
Sun 9/13
11:40 am-6:41 pm
1 stop15h 01m
$1,045
PortlandLondon
PDX - LHR
PDXLHR
Portland
Wed 8/19
5:41 pm-3:05 pm
1 stop13h 24m
London Heathrow
Sat 8/22
5:00 pm-8:11 am
1 stop23h 11m
$1,050
PortlandLondon
PDX - LHR
PDXLHR
Portland
Fri 7/17
12:23 pm-1:35 pm
2 stops17h 12m
London Heathrow
Thu 9/17
7:50 pm-5:10 pm
3 stops29h 20m
$1,079
PortlandLondon
PDX - LHR
PDXLHR
Portland
Thu 8/27
6:27 am-6:20 am
1 stop15h 53m
London Heathrow
Mon 10/12
3:40 pm-5:40 pm
Nonstop10h 00m
$1,085
Quickest round-trip
PortlandLondon
PDX - LHR
PDXLHR
Portland
Wed 8/19
7:30 pm-1:00 pm
Nonstop9h 30m
London Heathrow
Mon 8/24
3:40 pm-5:40 pm
Nonstop10h 00m
$1,127
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 71 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 $665). Flying from Portland to London Heathrow Airport in June is currently the most expensive (average of $1,339). 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 13, 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 13, 2026.
Peruse reviews from past customers who have flown with Virgin Atlantic,United Airlines, 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.
Overall
7.5
Crew
8.1
Entertainment
7.5
Boarding
7.7
Food
6.9
Comfort
7.3
Reviews
1 / 20
10.0
ExcellentEdwin,May 2026
LHR - LAX
Overall
7.5
Crew
8.1
Entertainment
7.5
Boarding
7.7
Food
6.9
Comfort
7.3
Reviews
1 / 20
10.0
ExcellentEdwin,May 2026
LHR - LAX
Overall
7.5
Crew
8.1
Entertainment
7.5
Boarding
7.7
Food
6.9
Comfort
7.3
Reviews
1 / 20
10.0
ExcellentEdwin,May 2026
LHR - LAX
Overall
7.5
Crew
8.1
Entertainment
7.5
Boarding
7.7
Food
6.9
Comfort
7.3
Reviews
1 / 20
10.0
ExcellentEdwin,May 2026
LHR - LAX
Overall
7.5
Crew
8.1
Entertainment
7.5
Boarding
7.7
Food
6.9
Comfort
7.3
Reviews
1 / 20
10.0
ExcellentEdwin,May 2026
LHR - LAX
Overall
7.5
Crew
8.1
Entertainment
7.5
Boarding
7.7
Food
6.9
Comfort
7.3
Reviews
1 / 20
10.0
ExcellentEdwin,May 2026
LHR - LAX
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
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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 13, 2026.
Portland and Heathrow flights
Browse other Portland and Heathrow flight options. Last updated on June 13, 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 13, 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 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$490 | Average$641 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$525 | Average$933 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$551 | Average$915 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$558 | Average$784 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$561 | Average$672 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$573 | Average$895 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$600 | Average$1,101 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$604 | Average$926 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$630 | Average$1,160 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$664 | Average$977 | FlexibilityNo cancel fee | On-time76% |