Cheap flights from Portland to London Heathrow Airport from £223
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 8/1. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — LHR
21 Dec — 28 Dec1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Portland to London Heathrow are usually found in October or April, booked 86 days in advance, depart on a Friday or Wednesday and return on a Wednesday
Cheap flight deals from Portland to Heathrow
Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) to Heathrow (LHR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 21 November 2025.
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 21 November 2025.
Tue 2/1214:45PDX - LHR
2 stops22h 20mMultiple Airlines
Wed 10/1207:50LHR - PDX
2 stops17h 10mMultiple Airlines
Deal found 20/11£467
Tue 25/1114:45PDX - LHR
1 stop20h 45mIcelandair
Wed 3/1212:15LHR - PDX
1 stop12h 45mIcelandair
Deal found 19/11£493
Tue 30/1207:30PDX - LHR
1 stop20h 30mLufthansa
Sun 8/208:45LHR - PDX
2 stops23h 54mLufthansa
Deal found 19/11£499
Tue 2/1214:45PDX - LHR
1 stop20h 45mIcelandair
Mon 8/1212:15LHR - PDX
1 stop12h 45mIcelandair
Deal found 18/11£500
Tue 30/1219:00PDX - LHR
2 stops28h 10mMultiple Airlines
Sun 8/209:00LHR - PDX
2 stops21h 32mMultiple Airlines
Deal found 20/11£507
Tue 30/1219:45PDX - LHR
1 stop32h 15mUnited Airlines
Sun 8/214:30LHR - PDX
1 stop32h 10mUnited Airlines
Deal found 19/11£511
Mon 8/1214:45PDX - LHR
1 stop20h 45mIcelandair
Mon 15/1212:15LHR - PDX
1 stop12h 45mIcelandair
Deal found 20/11£519
Tue 9/1207:00PDX - LHR
1 stop14h 55mBrussels Airlines
Thu 18/1210:25LHR - PDX
1 stop16h 36mBrussels Airlines
Deal found 19/11£537
Wed 3/1209:50PDX - LHR
1 stop18h 00mLufthansa
Tue 9/1211:30LHR - PDX
2 stops21h 07mLufthansa
Deal found 18/11£539
Wed 3/1214:23PDX - LHR
1 stop12h 07mKLM
Wed 10/1206:30LHR - PDX
1 stop12h 55mKLM
Deal found 19/11£542
Mon 8/1215:15PDX - LHR
1 stop12h 35mMultiple Airlines
Tue 16/1206:35LHR - PDX
2 stops26h 02mMultiple Airlines
Deal found 19/11£545
Best flights from Portland to Heathrow
Discover carefully curated flight deals from Portland to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 21 November 2025.
Tue 10/207:00PDX - LHR
2 stops26h 40mScandinavian Airlines
Wed 25/210:20LHR - PDX
2 stops20h 04mScandinavian Airlines
Deal found 20/11£450
Mon 5/117:15PDX - LHR
1 stop11h 35mDelta
Wed 21/106:30LHR - PDX
1 stop12h 55mDelta
Deal found 20/11£467
Wed 18/305:05PDX - LHR
1 stop21h 35mUnited Airlines
Wed 25/306:50LHR - PDX
2 stops20h 50mUnited Airlines
Deal found 19/11£478
Mon 23/213:02PDX - LHR
2 stops21h 28mScandinavian Airlines
Mon 2/310:20LHR - PDX
2 stops20h 04mScandinavian Airlines
Deal found 19/11£458
Wed 14/113:25PDX - LHR
1 stop13h 20mDelta
Thu 22/111:45LHR - PDX
1 stop31h 40mDelta
Deal found 21/11£475
Mon 16/313:00PDX - LHR
3 stops25h 35mScandinavian Airlines
Thu 23/407:05LHR - PDX
2 stops22h 30mScandinavian Airlines
Deal found 20/11£461
Tue 10/210:00PDX - LHR
2 stops19h 45mDelta
Wed 25/206:30LHR - PDX
1 stop12h 55mDelta
Deal found 19/11£475
Thu 23/413:00PDX - LHR
2 stops20h 40mScandinavian Airlines
Wed 29/410:20LHR - PDX
2 stops20h 02mScandinavian Airlines
Deal found 20/11£470
Wed 4/206:50PDX - LHR
2 stops17h 15mDelta
Tue 10/208:40LHR - PDX
1 stop34h 45mDelta
Deal found 20/11£475
Sun 18/113:25PDX - LHR
1 stop13h 20mDelta
Tue 27/111:45LHR - PDX
1 stop31h 40mDelta
Deal found 21/11£475
Sun 25/113:25PDX - LHR
1 stop13h 20mDelta
Thu 5/211:45LHR - PDX
1 stop31h 40mDelta
Deal found 21/11£475
Direct flights from Portland to Heathrow
Explore direct flight options from Portland to Heathrow based on user searches, and compare prices and availability for your desired travel dates. Data last updated 21 November 2025.
Mon 2/317:45PDX - LHR
Nonstop9h 35mBritish Airways
Wed 18/313:45LHR - PDX
Nonstop10h 10mBritish Airways
Deal found 19/11£478
Wed 14/117:45PDX - LHR
Nonstop9h 35mBritish Airways
Wed 21/113:45LHR - PDX
Nonstop10h 10mBritish Airways
Deal found 21/11£488
Mon 16/318:45PDX - LHR
Nonstop9h 35mIberia
Thu 23/415:40LHR - PDX
Nonstop10h 00mIberia
Deal found 19/11£490
Mon 16/318:45PDX - LHR
Nonstop9h 35mBritish Airways
Wed 1/415:40LHR - PDX
Nonstop10h 00mBritish Airways
Deal found 19/11£501
Fri 13/217:45PDX - LHR
Nonstop9h 35mBritish Airways
Wed 25/213:45LHR - PDX
Nonstop10h 10mBritish Airways
Deal found 21/11£515
Mon 5/117:45PDX - LHR
Nonstop9h 35mAmerican Airlines
Wed 21/113:45LHR - PDX
Nonstop10h 10mAmerican Airlines
Deal found 20/11£526
Wed 14/117:45PDX - LHR
Nonstop9h 35mBritish Airways
Sun 25/113:45LHR - PDX
Nonstop10h 10mBritish Airways
Deal found 21/11£526
Sun 29/319:30PDX - LHR
Nonstop9h 30mBritish Airways
Sun 12/415:40LHR - PDX
Nonstop10h 00mBritish Airways
Deal found 18/11£527
Tue 5/519:30PDX - LHR
Nonstop9h 30mFinnair
Thu 21/515:40LHR - PDX
Nonstop10h 00mFinnair
Deal found 20/11£536
Sun 19/419:30PDX - LHR
Nonstop9h 30mBritish Airways
Sat 2/515:40LHR - PDX
Nonstop10h 00mBritish Airways
Deal found 20/11£539
Last-minute flights from Portland to Heathrow
Discover last-minute flight deals from Portland to Heathrow. Data last updated 21 November 2025 and is based on user searches.
Wed 26/1109:50PDX - LHR
1 stop18h 00mMultiple Airlines
Wed 3/1209:00LHR - PDX
2 stops21h 15mMultiple Airlines
Deal found 19/11£547
Wed 26/1107:00PDX - LHR
2 stops18h 40mLufthansa
Wed 3/1207:40LHR - PDX
2 stops18h 26mLufthansa
Deal found 19/11£562
Wed 26/1114:23PDX - LHR
1 stop12h 07mKLM
Wed 3/1206:30LHR - PDX
1 stop12h 55mKLM
Deal found 20/11£572
Wed 26/1109:50PDX - LHR
1 stop18h 00mUnited Airlines
Wed 3/1206:35LHR - PDX
2 stops19h 31mUnited Airlines
Deal found 20/11£575
Sat 29/1114:45PDX - LHR
1 stop12h 05mIcelandair
Sun 7/1212:15LHR - PDX
1 stop12h 45mIcelandair
Deal found 20/11£506
Sat 29/1114:45PDX - LHR
1 stop20h 45mIcelandair
Thu 4/1220:35LHR - PDX
1 stop28h 25mIcelandair
Deal found 20/11£526
Sat 29/1114:45PDX - LHR
1 stop12h 05mIcelandair
Tue 9/1220:35LHR - PDX
1 stop28h 25mIcelandair
Deal found 20/11£527
Sat 29/1119:00PDX - LHR
1 stop32h 50mMultiple Airlines
Thu 11/1206:00LHR - PDX
2 stops24h 15mMultiple Airlines
Deal found 19/11£574
Mon 1/1214:45PDX - LHR
1 stop12h 05mIcelandair
Sun 7/1212:15LHR - PDX
1 stop12h 45mIcelandair
Deal found 20/11£470
Mon 1/1214:45PDX - LHR
1 stop20h 45mIcelandair
Tue 9/1220:35LHR - PDX
1 stop28h 25mIcelandair
Deal found 20/11£489
Mon 1/1214:45PDX - LHR
1 stop12h 05mIcelandair
Mon 8/1212:15LHR - PDX
1 stop12h 45mIcelandair
Deal found 20/11£557
Mon 1/1209:50PDX - LHR
1 stop18h 00mLufthansa
Fri 12/1206:35LHR - PDX
2 stops20h 06mLufthansa
Deal found 19/11£558
One-way flights from Portland to Heathrow
Search for one-way flight options from Portland to Heathrow. Find affordable one-way fares based on user searches. Data last updated 21 November 2025.
Thu 8/119:00PDX - LHR
2 stops33h 50mMultiple Airlines
Deal found 20/11£223
Sun 1/219:00PDX - LHR
2 stops33h 50mMultiple Airlines
Deal found 19/11£235
Sun 15/219:00PDX - LHR
3 stops33h 50mMultiple Airlines
Deal found 19/11£237
Mon 16/315:45PDX - LHR
1 stop20h 45mIcelandair
Deal found 19/11£252
Mon 4/515:45PDX - LHR
1 stop20h 35mIcelandair
Deal found 19/11£258
Tue 13/107:00PDX - LHR
2 stops25h 00mScandinavian Airlines
Deal found 19/11£262
Wed 10/1217:50PDX - LHR
3 stops33h 00mMultiple Airlines
Deal found 19/11£264
Thu 4/1212:45PDX - LHR
2 stops21h 45mScandinavian Airlines
Deal found 19/11£267
Sat 6/1209:48PDX - LHR
2 stops43h 02mMultiple Airlines
Deal found 19/11£270
Fri 5/1217:32PDX - LHR
3 stops39h 58mMultiple Airlines
Deal found 19/11£275
Cheapflights Fare Finder
Customise 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 858,174 searches. Data last updated 21 November 2025.
Use the filters below to find and compare flights from Portland to London Heathrow Airport that are best for you.
Fly from
Portland
Fly to
Heathrow
Route
Depart
Return
Price
PortlandLondon
PDX - LHR
PDXLHR
Portland
Tue 10/2
07:00-17:40
2 stops26h 40m
London Heathrow
Wed 25/2
10:20-22:24
2 stops20h 04m
£450
PortlandLondon
PDX - LHR
PDXLHR
Portland
Mon 23/2
13:02-18:30
2 stops21h 28m
London Heathrow
Mon 2/3
10:20-22:24
2 stops20h 04m
£458
PortlandLondon
PDX - LHR
PDXLHR
Portland
Mon 16/3
13:00-21:35
3 stops25h 35m
London Heathrow
Thu 23/4
07:05-21:35
2 stops22h 30m
£461
PortlandLondon
PDX - LHR
PDXLHR
Portland
Mon 5/1
17:15-12:50
1 stop11h 35m
London Heathrow
Wed 21/1
06:30-11:25
1 stop12h 55m
£467
PortlandLondon
PDX - LHR
PDXLHR
Portland
Thu 23/4
13:00-17:40
2 stops20h 40m
London Heathrow
Wed 29/4
10:20-22:22
2 stops20h 02m
£470
PortlandLondon
PDX - LHR
PDXLHR
Portland
Wed 14/1
13:25-10:45
1 stop13h 20m
London Heathrow
Thu 22/1
11:45-11:25
1 stop31h 40m
£475
PortlandLondon
PDX - LHR
PDXLHR
Portland
Tue 10/2
10:00-13:45
2 stops19h 45m
London Heathrow
Wed 25/2
06:30-11:25
1 stop12h 55m
£475
PortlandLondon
PDX - LHR
PDXLHR
Portland
Wed 4/2
06:50-08:05
2 stops17h 15m
London Heathrow
Tue 10/2
08:40-11:25
1 stop34h 45m
£475
PortlandLondon
PDX - LHR
PDXLHR
Portland
Sun 18/1
13:25-10:45
1 stop13h 20m
London Heathrow
Tue 27/1
11:45-11:25
1 stop31h 40m
£475
PortlandLondon
PDX - LHR
PDXLHR
Portland
Sun 25/1
13:25-10:45
1 stop13h 20m
London Heathrow
Thu 5/2
11:45-11:25
1 stop31h 40m
£475
Flights are sorted by cheapest return flights first.
Deals found on 20/11
Showing 1-10 of 20 results
1
2
Best time to book a flight from Portland to Heathrow
Have a flexible travel schedule? Discover the best time to fly to Heathrow from Portland with our price prediction graph.
Estimated return 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
More
How far ahead should I book a flight from Portland to London Heathrow Airport?
Use this chart to determine the optimal time to book a return flight from Portland to Heathrow. Price data was last updated on 14 November 2025.
The best time to book flights from Portland to London Heathrow Airport is 86 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Portland to London Heathrow Airport?
Currently, October is the cheapest month in which you can book a flight from Portland to London Heathrow Airport (average of £402). Flying from Portland to London Heathrow Airport in June is currently the most expensive (average of £619). 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 21 November 2025.
One of the essential ways to save on airfare from Portland to London Heathrow Airport is to remain as flexible as possible. Flights that are at midday tend to be the most expensive. A flight in the evening could potentially save you up to 27% on airfare.
How much does it cost for a return flight from Portland to London Heathrow Airport?
What’s the top stopover airport for flights from Portland to London Heathrow Airport?
Share of one-stop return flights from Portland to London Heathrow Airport chosen by Cheapflights users in the past 12 months, using the same stopover each way.
Reykjavik (KEF) – chosen by Cheapflights users on 53% of one-stop itineraries from Portland to London Heathrow Airport on Cheapflights.
What’s the cheapest stopover airport for flights from Portland to London Heathrow Airport?
Average return fare for one-stop flights from Portland to London Heathrow Airport, chosen by Cheapflights users in the past 12 months, with the same stopover each way.
Seattle (SEA) is the most affordable one-stop option, with an average return flight price of £759.
What’s the fastest stopover option from Portland to London Heathrow Airport?
Shortest average travel time for one-stop one-way flights from Portland to London Heathrow Airport, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.
Flights via Reykjavik (KEF) have the shortest average one-way travel time for one-stop routes: 12h 12m.
Which airport typically offers the quickest stopover for flights from Portland to London Heathrow Airport?
Average stopover duration for one-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 Seattle (SEA) offer the fastest connection on this route, with an average stopover time of 1h 37m.
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 21 November 2025.
Get a feel of what it's like to fly with Virgin Atlantic, Icelandair, andIberia from Portland to London Heathrow Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
Related info for your journey
Find useful and relevant information for your journey from Portland to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
What airport do you fly from for flights from Portland to London Heathrow?
Portland (PDX), located 6.0 mi from the city center, is the airport you fly out of when you book flights from Portland to London Heathrow. 4 airlines have flights from Portland to London Heathrow on a regular basis. Booking flights from Portland to London Heathrow should not be difficult; the airport handles an average of 2 outbound flights to London Heathrow per day.
How long is the flight from Portland to London Heathrow Airport?
For as low as £467, Scandinavian Airlines can have you in London Heathrow Airport from Portland in 11h 35m. The distance between Portland and London Heathrow Airport is about 4896 mi. This flight may include one or multiple stops.
What are the cheapest airlines flying from Portland to London Heathrow Airport round-trip?
According to our current data, British Airways (£394), Icelandair (£451), and Iberia (£466) offers the cheapest pricing from Portland to London Heathrow Airport. These flights start at 38% lower than the current average price 3 months from now.
What are the most reliable airlines from Portland to London Heathrow Airport?
Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Portland to London Heathrow Airport on time: American Airlines (77%), Alaska Airlines (77%), Finnair (77%).
What are the cheapest flights from Portland to London Heathrow Airport?
On average you can expect to pay £2,337 for a flight from Portland to London Heathrow Airport. The cheapest flight overall is £1,397 while the most popular route, (Portland - London Heathrow) is currently priced at £363.
Can I find deals for business class flights from Portland to Heathrow?
Yes. Cheapflights offers flight deals from Portland to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Portland to London Heathrow Airport?
Currently, October is the cheapest month in which you can book a flight from Portland to London Heathrow Airport (average of £402). Flying from Portland to London Heathrow Airport in June is currently the most expensive (average of £619). 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.
Explore flights to Heathrow departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 21 November 2025.
Discover the top 4 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 858,174 searches. Data last updated 21 November 2025.
Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from Portland to Heathrow?
Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Portland to Heathrow. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.
Why should you use Cheapflights to find cheap flight tickets from Portland to Heathrow?
By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Heathrow from Portland.
Can Cheapflights find flights from Portland to Heathrow with no change fees?
Users can book flights with no change fees policies with our dedicated filters. Book flights from Portland to Heathrow flexibly with Cheapflights today.
Can Cheapflights notify me if prices for flights from Portland to Heathrow become cheaper?
Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!
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