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Cheap flights from London to Portland from £283

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 16/6. Fares are subject to change and may not be available on all flights or dates of travel.
LON — PDX
19 Jun — 26 Jun1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London to Portland are usually found in September or February, booked 53 days in advance, depart on a Thursday or Wednesday and return on a Saturday

Cheap flight deals from London to Portland

Enter your travel dates to find the best prices.

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 20 May 2026.

Fri 12/607:40
LHR
-
PDX
2 stops38h 10m
Multiple Airlines
Tue 1/917:35
PDX
-
LHR
1 stop13h 30m
Multiple Airlines
Deal found 16/5£680
Fri 30/1012:15
LHR
-
PDX
1 stop12h 45m
Icelandair
Mon 30/1114:45
PDX
-
LHR
1 stop12h 05m
Icelandair
Deal found 16/5£681
Fri 30/1011:55
LGW
-
PDX
1 stop13h 05m
Icelandair
Thu 3/1214:45
PDX
-
LGW
1 stop12h 10m
Icelandair
Deal found 16/5£681
Mon 22/613:55
LHR
-
PDX
2 stops27h 36m
Multiple Airlines
Wed 8/719:05
PDX
-
LHR
1 stop17h 15m
Multiple Airlines
Deal found 20/5£682
Tue 22/905:40
LTN
-
PDX
3 stops40h 10m
Multiple Airlines
Tue 29/910:10
PDX
-
LTN
2 stops21h 20m
Multiple Airlines
Deal found 15/5£683
Thu 29/1020:35
LHR
-
PDX
1 stop28h 25m
Icelandair
Thu 3/1214:45
PDX
-
LHR
1 stop12h 05m
Icelandair
Deal found 16/5£683
Wed 3/614:10
LHR
-
PDX
1 stop31h 40m
Multiple Airlines
Sun 7/613:05
PDX
-
LHR
2 stops21h 45m
Multiple Airlines
Deal found 18/5£683
Sun 14/619:35
LGW
-
PDX
1 stop25h 35m
Condor
Mon 22/615:30
PDX
-
LGW
1 stop15h 10m
Condor
Deal found 18/5£684
Mon 31/822:45
STN
-
PDX
3 stops47h 05m
Multiple Airlines
Wed 30/915:30
PDX
-
STN
2 stops18h 05m
Multiple Airlines
Deal found 19/5£686
Wed 16/913:05
LHR
-
PDX
1 stop12h 50m
Multiple Airlines
Sun 20/911:45
PDX
-
LHR
1 stop15h 05m
Multiple Airlines
Deal found 20/5£686
Sun 1/1120:35
LHR
-
PDX
1 stop28h 25m
Multiple Airlines
Mon 30/1117:45
PDX
-
LHR
Nonstop9h 35m
Multiple Airlines
Deal found 16/5£686
Tue 22/909:25
LGW
-
PDX
2 stops17h 41m
SWISS
Tue 29/907:02
PDX
-
LGW
2 stops17h 23m
SWISS
Deal found 15/5£687

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 20 May 2026.

Round-trip from

£680

One-way from

£283

Popular in

July

Cheapest in

September

Average price

£683

Good round-trip deal

£696 or less

Good one-way deal

£539 or less
Alaska Airlines
  • Alaska Airlines
  • 12/6-1/9
  • 3 total stops
  • 51h 40m total
  • London to Portland
Search Deals
16/6
  • 16/6
  • 3 total stops
  • 49h 50m total
  • London to Portland
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£64 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£12 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
Search Deals
Price to beat on a round-trip flight from London (LON) to Portland.
Search Deals
Price to beat on a one-way flight from London (LON) to Portland.
Search Deals

Cheapflights Fare Finder

 
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 858,174 searches. Data last updated 20 May 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

LTN - PDX

LTNPDX

London Luton

Fri 12/6

06:20-13:50

3 stops39h 30m

Portland

Tue 1/9

10:10-13:25

2 stops19h 15m

£692

LondonPortland

LGW - PDX

LGWPDX

London Gatwick

Mon 22/6

12:20-13:05

1 stop32h 45m

Portland

Wed 8/7

14:20-09:35

1 stop35h 15m

£697

LondonPortland

STN - PDX

STNPDX

London Stansted

Mon 22/6

08:00-09:31

3 stops33h 31m

Portland

Wed 8/7

13:05-21:40

2 stops24h 35m

£697

LondonPortland

LCY - PDX

LCYPDX

London City

Tue 22/9

09:15-19:06

2 stops17h 51m

Portland

Tue 29/9

07:02-08:40

2 stops17h 38m

£703

LondonPortland

LGW - PDX

LGWPDX

London Gatwick

Wed 16/9

09:25-19:06

2 stops17h 41m

Portland

Sun 20/9

07:02-08:25

2 stops17h 23m

£741

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Tue 2/6

07:05-19:24

3 stops20h 19m

Portland

Fri 5/6

23:03-09:35

2 stops26h 32m

£747

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Fri 4/9

07:05-21:35

2 stops22h 30m

Portland

Fri 18/9

13:38-16:00

2 stops18h 22m

£748

LondonPortland

LTN - PDX

LTNPDX

London Luton

Wed 16/9

21:50-13:35

2 stops23h 45m

Portland

Sun 20/9

10:10-14:35

3 stops20h 25m

£779

LondonPortland

LGW - PDX

LGWPDX

London Gatwick

Mon 7/9

15:40-14:27

2 stops30h 47m

Portland

Wed 16/9

15:27-14:40

2 stops15h 13m

£790

LondonPortland

LCY - PDX

LCYPDX

London City

Sat 31/10

08:40-22:18

2 stops20h 38m

Portland

Sat 7/11

13:39-17:05

2 stops19h 26m

£794

Flights are sorted by cheapest return flights first.

Deals found on 16/5

Showing 1-10 of 60 resultsSorted by cheapest first
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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.
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

What is the cheapest month to book a flight from London to Portland?

Currently, April is the cheapest month in which you can book a flight from London to Portland (average of £275). Flying from London to Portland in August is currently the most expensive (average of £470). 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 20 May 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 20 May 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?

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 45% 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.

Reykjavik (KEF) is the most affordable one-stop option, with an average return flight price of £467.

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 20m.

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 Salt Lake City (SLC) offer the fastest connection on this route, with an average stopover time of 1h 01m.

How often are flights from London to Portland delayed?

About 19% of weekly flights between London and Portland have experienced delays in the past year, with the average delay time being 114 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 19% 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 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.

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 20 May 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.
Virgin Atlantic
7.4
Good
688 reviews
Check prices

Crew

8.1

Overall

7.4

Comfort

7.3

Food

6.9

Boarding

7.7

Entertainment

7.5

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

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!
Virgin Atlantic
7.4
Good
688 reviews
Virgin Atlantic
7.4
Good
688 reviews
Check prices

Crew

8.1

Overall

7.4

Comfort

7.3

Food

6.9

Boarding

7.7

Entertainment

7.5

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

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!
American Airlines
7.1
Good
11,641 reviews
Virgin Atlantic
7.4
Good
688 reviews
Check prices

Crew

8.1

Overall

7.4

Comfort

7.3

Food

6.9

Boarding

7.7

Entertainment

7.5

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

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!
Icelandair
7.0
Good
656 reviews
Virgin Atlantic
7.4
Good
688 reviews
Check prices

Crew

8.1

Overall

7.4

Comfort

7.3

Food

6.9

Boarding

7.7

Entertainment

7.5

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

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!
Lufthansa
6.8
Okay
8,015 reviews
Virgin Atlantic
7.4
Good
688 reviews
Check prices

Crew

8.1

Overall

7.4

Comfort

7.3

Food

6.9

Boarding

7.7

Entertainment

7.5

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

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!
British Airways
6.7
Okay
7,989 reviews
Virgin Atlantic
7.4
Good
688 reviews
Check prices

Crew

8.1

Overall

7.4

Comfort

7.3

Food

6.9

Boarding

7.7

Entertainment

7.5

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

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 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 9 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 17h 51m. Fly via JetBlue, SWISS, or Scandinavian Airlines to get the fastest option. There are 4908 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 £451, 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 Lufthansa and Air Canada - these airlines can fly you to your destination from £493 and £495, respectively. Icelandair is 33% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from London to Portland one-way?

    For one-way options, check prices for British Airways. According to our data, you can fly for as low as £426. Users have also found prices from £427 and £556 on Virgin Atlantic and Finnair, respectively.

  • 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 Stansted - 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 (78%), Alaska Airlines (78%), Aer Lingus (78%).

  • What are the cheapest flights from London to Portland?

    While on average a flight from London to Portland is generally £748, our data shows the cheapest flight currently is £459. When looking at the most popular route, (London Heathrow - Portland), you can expect to pay £626 for that flight.

  • Can I find deals for flights from London to Portland that include hotel bookings?

    Yes. In addition to deals on London to Portland flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from London to Portland?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Portland.

  • 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, April is the cheapest month in which you can book a flight from London to Portland (average of £275). Flying from London to Portland in August is currently the most expensive (average of £470). 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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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 20 May 2026.
British Airways flights from London to Portland
Virgin Atlantic flights from London to Portland
Finnair flights from London to Portland

Top 9 airlines flying from London to Portland

Discover the top 9 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 858,174 searches. Data last updated 20 May 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£451Average£634FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
LufthansaCheapest£493Average£588FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Air CanadaCheapest£495Average£721FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapest£496Average£608FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
KLMCheapest£498Average£827FlexibilityNo cancel feeOn-time75%
Search KLM flights
Virgin AtlanticCheapest£512Average£665FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
FinnairCheapest£513Average£576FlexibilityNo cancel feeOn-time76%
Search Finnair flights
British AirwaysCheapest£522Average£696FlexibilityNo cancel feeOn-time70%
Search British Airways flights
American AirlinesCheapest£541Average£801FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

Fly with Cheapflights

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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