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 7/9. Fares are subject to change and may not be available on all flights or dates of travel.
LON — PDX
18 Sep — 25 Sep1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London to Portland are usually found in February or January, booked 2 days in advance, depart on a Wednesday or Friday and return on a Tuesday
Cheap flight deals from London to Portland
Enter your travel dates to find the best prices.
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Best
Direct
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Cheapest flights from London to Portland
Explore the most affordable flight options available from London to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 August 2026.
Tue 15/917:10 -
1 stop26h 00m
Tue 22/912:45 -
1 stop15h 20m
Deal found 16/8£631
Thu 3/909:40 -
2 stops36h 10m
Sat 3/1015:30 -
1 stop15h 05m
Deal found 15/8£632
Wed 9/913:05 -
1 stop12h 45m
Thu 24/915:30 -
1 stop12h 25m
Deal found 15/8£632
Thu 1/1006:30 -
2 stops18h 20m
Thu 8/1007:18 -
2 stops30h 07m
Deal found 17/8£634
Wed 9/912:40 -
3 stops28h 51m
Thu 24/915:30 -
2 stops20h 50m
Deal found 15/8£635
Wed 9/913:05 -
1 stop12h 45m
Wed 30/915:30 -
1 stop20h 50m
Deal found 15/8£636
Wed 2/909:40 -
2 stops31h 51m
Sun 6/919:00 -
2 stops17h 10m
Deal found 17/8£640
Wed 7/1013:05 -
1 stop12h 50m
Wed 14/1015:30 -
1 stop20h 50m
Deal found 16/8£641
Wed 11/1107:15 -
2 stops17h 45m
Tue 17/1114:45 -
2 stops19h 20m
Deal found 17/8£649
Wed 23/909:20 -
1 stop17h 39m
Tue 29/911:35 -
1 stop17h 30m
Deal found 16/8£649
Fri 4/914:00 -
2 stops35h 11m
Fri 11/921:30 -
1 stop24h 50m
Deal found 17/8£649
Thu 8/1021:25 -
1 stop28h 30m
Wed 21/1015:30 -
1 stop12h 25m
Deal found 18/8£649
Best flights from London to Portland
Discover carefully curated flight deals from London to Portland that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 19 August 2026.
Thu 8/1012:40 -
3 stops28h 51m
Wed 21/1015:30 -
3 stops34h 20m
Deal found 14/8£690
Thu 24/911:25 -
2 stops21h 09m
Wed 30/918:55 -
2 stops18h 25m
Deal found 17/8£692
Fri 30/1011:55 -
1 stop13h 05m
Thu 12/1114:45 -
1 stop12h 10m
Deal found 15/8£692
Thu 10/1206:40 -
2 stops24h 00m
Mon 14/1207:05 -
2 stops26h 35m
Deal found 17/8£693
Fri 30/1008:20 -
1 stop19h 51m
Fri 6/1117:45 -
Nonstop9h 35m
Deal found 14/8£717
Wed 7/1015:40 -
Nonstop10h 00m
Wed 14/1019:30 -
Nonstop9h 30m
Deal found 16/8£725
Thu 8/1009:25 -
2 stops17h 41m
Wed 21/1007:02 -
2 stops17h 23m
Deal found 14/8£726
Tue 8/1218:55 -
1 stop24h 25m
Sat 12/1211:31 -
2 stops22h 54m
Deal found 19/8£790
Fri 30/1017:20 -
2 stops36h 26m
Fri 6/1113:25 -
2 stops42h 55m
Deal found 14/8£1,292
Tue 27/1020:35 -
1 stop28h 25m
Sat 7/1114:45 -
1 stop12h 05m
Deal found 15/8£694
Wed 30/907:25 -
2 stops19h 06m
Wed 7/1010:43 -
1 stop17h 52m
Deal found 16/8£708
Fri 30/1007:05 -
3 stops22h 14m
Fri 6/1110:56 -
2 stops23h 34m
Deal found 14/8£723
Tue 27/1020:05 -
2 stops33h 54m
Sun 8/1110:47 -
2 stops40h 28m
Deal found 15/8£728
Thu 8/1015:40 -
Nonstop10h 00m
Wed 21/1014:25 -
1 stop14h 25m
Deal found 19/8£759
Thu 1/1013:05 -
1 stop31h 54m
Thu 8/1021:30 -
1 stop24h 50m
Deal found 17/8£760
Thu 29/1020:35 -
1 stop28h 25m
Tue 10/1114:45 -
1 stop20h 45m
Deal found 15/8£694
Thu 8/1017:50 -
1 stop25h 20m
Wed 21/1015:22 -
2 stops17h 18m
Deal found 19/8£790
Fri 4/906:40 -
2 stops21h 04m
Fri 18/912:34 -
3 stops21h 56m
Deal found 19/8£728
Tue 15/909:25 -
2 stops18h 56m
Tue 22/907:02 -
2 stops17h 23m
Deal found 16/8£729
Tue 15/922:35 -
3 stops42h 56m
Tue 22/910:10 -
2 stops18h 35m
Deal found 16/8£768
Tue 8/917:50 -
1 stop25h 20m
Tue 15/913:42 -
2 stops18h 58m
Deal found 16/8£813
Thu 8/1009:15 -
2 stops17h 51m
Wed 21/1010:43 -
2 stops17h 52m
Deal found 14/8£742
Mon 7/906:30 -
3 stops35h 01m
Thu 10/915:30 -
2 stops23h 50m
Deal found 14/8£768
Wed 4/1109:15 -
2 stops21h 12m
Sun 8/1110:47 -
2 stops42h 03m
Deal found 15/8£744
Wed 2/906:10 -
2 stops19h 40m
Sun 6/919:00 -
2 stops19h 55m
Deal found 17/8£770
Wed 28/1009:15 -
2 stops20h 44m
Tue 10/1110:47 -
2 stops42h 03m
Deal found 15/8£744
Wed 11/1108:00 -
1 stop17h 00m
Tue 17/1114:45 -
1 stop16h 20m
Deal found 17/8£808
Wed 9/909:15 -
2 stops17h 56m
Wed 30/907:02 -
2 stops17h 38m
Deal found 15/8£765
Wed 28/1010:55 -
2 stops42h 51m
Sat 14/1113:25 -
2 stops36h 30m
Deal found 15/8£1,293
Mon 28/908:10 -
2 stops35h 00m
Mon 5/1013:05 -
2 stops21h 25m
Deal found 14/8£819
Direct flights from London to Portland
Explore direct flight options from London to Portland based on user searches, and compare prices and availability for your desired travel dates. Data last updated 19 August 2026.
Fri 30/1013:35 -
Nonstop10h 15m
Sun 8/1117:45 -
Nonstop9h 35m
Deal found 15/8£652
Wed 4/1113:35 -
Nonstop10h 15m
Sun 8/1117:45 -
Nonstop9h 35m
Deal found 15/8£685
Mon 11/113:35 -
Nonstop10h 15m
Mon 18/117:45 -
Nonstop9h 35m
Deal found 19/8£707
Mon 1/213:35 -
Nonstop10h 15m
Sun 7/217:45 -
Nonstop9h 35m
Deal found 18/8£718
Wed 23/915:40 -
Nonstop10h 00m
Tue 29/919:30 -
Nonstop9h 30m
Deal found 16/8£720
Wed 7/1015:40 -
Nonstop10h 00m
Wed 14/1019:30 -
Nonstop9h 30m
Deal found 17/8£725
Wed 9/915:40 -
Nonstop10h 00m
Thu 24/919:30 -
Nonstop9h 30m
Deal found 15/8£734
Thu 8/1015:40 -
Nonstop10h 00m
Wed 21/1019:30 -
Nonstop9h 30m
Deal found 19/8£737
Thu 8/1015:40 -
Nonstop10h 00m
Wed 21/1019:30 -
Nonstop9h 30m
Deal found 15/8£738
Wed 28/1013:35 -
Nonstop10h 15m
Wed 11/1117:45 -
Nonstop9h 35m
Deal found 15/8£744
Last-minute flights from London to Portland
Discover last-minute flight deals from London to Portland. Data last updated 19 August 2026 and is based on user searches.
Fri 28/806:40 -
2 stops24h 04m
Fri 13/1113:05 -
2 stops21h 25m
Deal found 15/8£651
Wed 2/909:40 -
2 stops31h 51m
Sun 6/919:00 -
2 stops17h 10m
Deal found 17/8£640
Thu 3/909:40 -
2 stops36h 10m
Sat 3/1015:30 -
1 stop15h 05m
Deal found 15/8£632
Thu 3/921:25 -
2 stops24h 25m
Sat 3/1015:30 -
1 stop12h 25m
Deal found 15/8£650
Fri 4/914:00 -
2 stops35h 11m
Fri 11/921:30 -
1 stop24h 50m
Deal found 17/8£649
Wed 9/913:05 -
1 stop12h 45m
Thu 24/915:30 -
1 stop12h 25m
Deal found 15/8£632
Wed 9/912:40 -
3 stops28h 51m
Thu 24/915:30 -
2 stops20h 50m
Deal found 15/8£635
Wed 9/913:05 -
1 stop12h 45m
Wed 30/915:30 -
1 stop20h 50m
Deal found 15/8£636
Fri 11/906:40 -
2 stops18h 30m
Fri 18/911:20 -
2 stops18h 15m
Deal found 15/8£655
Tue 15/917:10 -
1 stop26h 00m
Tue 22/912:45 -
1 stop15h 20m
Deal found 16/8£631
Wed 16/915:05 -
1 stop26h 26m
Wed 23/908:40 -
1 stop17h 00m
Deal found 19/8£652
Wed 23/909:20 -
1 stop17h 39m
Tue 29/911:35 -
1 stop17h 30m
Deal found 16/8£649
One-way flights from London to Portland
Search for one-way flight options from London to Portland. Find affordable one-way fares based on user searches. Data last updated 19 August 2026.
Mon 7/920:45 -
3 stops56h 06m
Deal found 17/8£391
Tue 15/1209:55 -
3 stops42h 55m
Deal found 16/8£392
Wed 2/909:40 -
2 stops31h 51m
Deal found 16/8£392
Wed 16/912:40 -
2 stops28h 51m
Deal found 17/8£393
Sun 15/1105:55 -
3 stops46h 52m
Deal found 19/8£394
Wed 21/1007:10 -
3 stops38h 14m
Deal found 15/8£394
Mon 21/920:50 -
3 stops56h 00m
Deal found 15/8£398
Mon 31/820:15 -
3 stops49h 35m
Deal found 15/8£400
Wed 18/1112:15 -
3 stops39h 53m
Deal found 17/8£400
Sun 31/120:45 -
3 stops32h 03m
Deal found 16/8£400
Tue 25/821:20 -
3 stops48h 30m
Deal found 15/8£401
Tue 25/819:10 -
3 stops50h 40m
Deal found 15/8£401
Find flight deals from London to Portland
Discover tips and strategies to find the most affordable flight options for your journey from London (LON) to Portland (PDX). 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 19 August 2026.
Customise your flight search to find flights from London to Portland 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 19 August 2026.
Use the filters below to find and compare flights from London to Portland that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
Cheapest return flight
LondonPortland
LGW London Gatwick - PDX Portland
LGWPDX
London Gatwick
Thu 8/10
12:40-09:31
3 stops28h 51m
Portland
Wed 21/10
15:30-09:50
3 stops34h 20m
£690
LondonPortland
LHR London Heathrow - PDX Portland
LHRPDX
London Heathrow
Thu 24/9
11:25-00:34
2 stops21h 09m
Portland
Wed 30/9
18:55-21:20
2 stops18h 25m
£692
LondonPortland
LGW London Gatwick - PDX Portland
LGWPDX
London Gatwick
Fri 30/10
11:55-18:00
1 stop13h 05m
Portland
Thu 12/11
14:45-10:55
1 stop12h 10m
£692
LondonPortland
LHR London Heathrow - PDX Portland
LHRPDX
London Heathrow
Thu 10/12
06:40-22:40
2 stops24h 00m
Portland
Mon 14/12
07:05-17:40
2 stops26h 35m
£693
LondonPortland
LHR London Heathrow - PDX Portland
LHRPDX
London Heathrow
Tue 27/10
20:35-18:00
1 stop28h 25m
Portland
Sat 7/11
14:45-10:50
1 stop12h 05m
£694
LondonPortland
LHR London Heathrow - PDX Portland
LHRPDX
London Heathrow
Thu 29/10
20:35-18:00
1 stop28h 25m
Portland
Tue 10/11
14:45-19:30
1 stop20h 45m
£694
LondonPortland
LHR London Heathrow - PDX Portland
LHRPDX
London Heathrow
Wed 30/9
07:25-18:31
2 stops19h 06m
Portland
Wed 7/10
10:43-12:35
1 stop17h 52m
£708
LondonPortland
LHR London Heathrow - PDX Portland
LHRPDX
London Heathrow
Fri 30/10
08:20-21:11
1 stop19h 51m
Portland
Fri 6/11
17:45-11:20
Nonstop9h 35m
£717
LondonPortland
LHR London Heathrow - PDX Portland
LHRPDX
London Heathrow
Fri 30/10
07:05-22:19
3 stops22h 14m
Portland
Fri 6/11
10:56-18:30
2 stops23h 34m
£723
Fastest return journey
LondonPortland
LHR London Heathrow - PDX Portland
LHRPDX
London Heathrow
Wed 7/10
15:40-17:40
Nonstop10h 00m
Portland
Wed 14/10
19:30-13:00
Nonstop9h 30m
£725
Flights are sorted by cheapest return flights first.
Deals found on 17/8
Showing 1-10 of 60 resultsSorted by cheapest first
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2
3
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6
Best time to book a flight from London to Portland
Have a flexible travel schedule? Discover the best time to fly to Portland from London with our price prediction graph.
LON-PDX
LHR-PDX
STN-PDX
LGW-PDX
LTN-PDX
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 London to Portland
LON-PDX
LHR-PDX
STN-PDX
LGW-PDX
LTN-PDX
What is the cheapest month to book a flight from London to Portland?
Currently, February is the cheapest month in which you can book a flight from London to Portland (average of £581). Flying from London to Portland in July is currently the most expensive (average of £949). 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 LON to PDX?
Find hourly flight availability from London to Portland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 19 August 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London to Portland as you normally would.
Weekly flight availability from London to Portland
Explore weekly flight availability from London to Portland. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 19 August 2026.
The most flights from LON to PDX are scheduled on a Monday (7 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (7 on average).
How much does it cost for a return flight from London to Portland?
Airfare is below average for this route at the moment.
London to Portland flights typically cost between £652 and £1,108 in September.The cheapest return price found within the last 5 days was £631 on Virgin Atlantic (15 Sept–22 Sept).
What’s the top stopover airport for flights from London to Portland?
Share of one-stop return flights from London to Portland chosen by Cheapflights users in the past 12 months, using the same stopover each way.
Reykjavik (KEF) – chosen by Cheapflights users on 68% of one-stop itineraries from London to Portland on Cheapflights.
What’s the cheapest stopover airport for flights from London to Portland?
Average return fare for one-stop flights from London to Portland, chosen by Cheapflights users in the past 12 months, with the same stopover each way.
Dallas (DFW) is the most affordable one-stop option, with an average return flight price of £514.
What’s the fastest stopover option from London to Portland?
Shortest average travel time for one-stop one-way flights from London to Portland, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.
Flights via Vancouver (YVR) have the shortest average one-way travel time for one-stop routes: 12h 24m.
Which airport typically offers the quickest stopover for flights from London to Portland?
Average stopover duration for one-stop one-way flights from London to Portland, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Denver (DEN) offer the fastest connection on this route, with an average stopover time of 1h 11m.
How often are flights from London to Portland delayed?
About 22% of weekly flights between London and Portland have experienced delays in the past year, with the average delay time being 127 minutes.
What is the most punctual flight time for London to Portland flights?
Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Friday tends to have the lowest number of delays on this route, whereas Wednesday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on London to Portland flights?
Over the past year, British Airways have had the lowest number of delays on this route, with just 22% of flights being delayed.
How far ahead should I book a flight from London to Portland?
The best time to book flights from London to Portland is 32 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.
Reviews of airlines servicing Portland
Get insights into the airlines that provide service to Portland. 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 Portland. Reviews last updated 19 August 2026.
Read through reviews of airlines operating flights from London to Portland, such as Virgin Atlantic,American Airlines, andIcelandair. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
First time flying with Virgin. It was everything I hoped it would be.
Related info for your journey
Find useful and relevant information for your journey from London to Portland. 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 into for flights to Portland from London?
Most people fly into Portland (PDX) if they book a flight to Portland from London. On average, Portland has 7 inbound flights from London per day from 10 airlines. Portland is conveniently located just 6.0 mi from Portland’s city center.
How long is the flight from London to Portland?
There are many flights that can get you from London to Portland in 21h 09m. Fly via United Airlines, Scandinavian Airlines, or Icelandair to get the fastest option. There are 4896 mi between London and Portland. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
What are the cheapest airlines flying from London to Portland round-trip?
Currently priced at £417, Icelandair will fly you from London to Portland and back. In addition to Icelandair, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Finnair and Air Canada - these airlines can fly you to your destination from £465 and £490, respectively. Icelandair is 43% cheaper than the average price of flights available within the next 90 days to this destination.
What are the most popular routes from London to Portland?
The most popular route from London to Portland is London Heathrow - Portland. You may also consider London Gatwick - Portland or London City - Portland.
What are the most reliable airlines from London to Portland?
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 London to Portland on time: American Airlines (82%), Alaska Airlines (82%), Aer Lingus (82%).
What are the cheapest flights from London to Portland?
While on average a flight from London to Portland is generally £2,231, our data shows the cheapest flight currently is £685. When looking at the most popular route, (London Heathrow - Portland), you can expect to pay £579 for that flight.
Can I find deals for business class flights from London to Portland?
Yes. Cheapflights offers flight deals from London to Portland 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 London to Portland?
Currently, February is the cheapest month in which you can book a flight from London to Portland (average of £581). Flying from London to Portland in July is currently the most expensive (average of £949). 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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Airlines
Alternative routes
Complete your trip
Direct flights to Oregon
Flights by cabin class
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Popular flights
Portland flight routes
Fly from London to Portland on these airlines
Choose from the following airlines for your flight from London to Portland. Flights are based on user searches made on Cheapflights and were last updated on 19 August 2026.
Explore flights to Portland departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 19 August 2026.
Discover the top 10 airlines that operate flights from London to Portland. 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 19 August 2026.
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 London to Portland?
Cheapflights helps you search for flights from London to Portland via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.
Why should you use Cheapflights to find cheap flight tickets from London to Portland?
Cheapflights helps you find that perfect flight to Portland from London by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!
Can Cheapflights find flights from London to Portland with no change fees?
Cheapflights does show flights with no change fees to all users. To see these options for flights from London to Portland, users can toggle the no change fees filter when performing a flight search.
Can Cheapflights notify me if prices for flights from London to Portland become cheaper?
Yes, Cheapflights offers price alerts on London to Portland flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.
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