Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from London to Portland from £313

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London to Portland departing on 8/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Voted winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from London to Portland

Cheap return flights

Enter your travel dates to find the best prices.
Icelandair Logo
15:40 - 18:00LGW-PDX
34h 20m1 stop
Icelandair Logo
15:45 - 14:40PDX-LGW
14h 55m1 stop
£535Icelandair
Find Deal
Tue, 21 Apr - Tue, 5 May
Icelandair Logo
21:25 - 18:00LHR-PDX
28h 35m1 stop
Icelandair Logo
15:45 - 20:20PDX-LHR
20h 35m1 stop
£538Icelandair
Find Deal
Tue, 21 Apr - Tue, 5 May
British Airways Logo
13:45 - 15:55LHR-PDX
10h 10mdirect
British Airways Logo
12:35 - 10:00PDX-LHR
13h 25m1 stop
£586British Airways
Find Deal
Wed, 10 Dec - Thu, 29 Jan
American Airlines Logo
15:45 - 12:38LHR-PDX
28h 53m1 stop
American Airlines Logo
06:00 - 10:10PDX-LHR
20h 10m2 stops
£587American Airlines
Find Deal
Wed, 10 Dec - Tue, 20 Jan
Lufthansa Logo
07:40 - 18:06LHR-PDX
18h 26m2 stops
Lufthansa Logo
07:00 - 05:55PDX-LHR
14h 55m1 stop
£591Lufthansa
Find Deal
Wed, 10 Dec - Thu, 29 Jan
British Airways Logo
13:45 - 15:55LHR-PDX
10h 10mdirect
British Airways Logo
14:05 - 12:15PDX-LHR
14h 10m1 stop
£596British Airways
Find Deal
Wed, 11 Feb - Wed, 18 Feb
Virgin Atlantic Logo
06:30 - 11:25LHR-PDX
12h 55m1 stop
Virgin Atlantic Logo
17:15 - 12:50PDX-LHR
11h 35m1 stop
£599Virgin Atlantic
Find Deal
Mon, 8 Dec - Mon, 15 Dec
Lufthansa Logo
06:35 - 18:40LHR-PDX
20h 05m2 stops
Lufthansa Logo
07:00 - 09:40PDX-LHR
18h 40m2 stops
£606Lufthansa
Find Deal
Wed, 26 Nov - Wed, 21 Jan
American Airlines Logo
11:20 - 23:59LGW-PDX
44h 39m2 stops
American Airlines Logo
22:59 - 07:30PDX-LGW
49h 31m2 stops
£626American Airlines
Find Deal
Fri, 6 Mar - Tue, 10 Mar
Virgin Atlantic Logo
08:40 - 20:32LCY-PDX
19h 52m2 stops
Virgin Atlantic Logo
13:25 - 16:35PDX-LCY
19h 10m1 stop
£644Virgin Atlantic
Find Deal
Wed, 11 Feb - Wed, 18 Feb

Virgin Atlantic flights from London to Portland

Our best Virgin Atlantic deals on London to Portland flight tickets
Virgin Atlantic
8 Dec
LHR06:30London Heathrow
12h 55m
1 stop
PDX11:25Portland
15 Dec
PDX17:15Portland
11h 35m
1 stop
LHR12:50London Heathrow
£599
Find similar
Virgin Atlantic
11 Feb
LCY08:40London City
19h 52m
2 stops
PDX20:32Portland
18 Feb
PDX13:25Portland
19h 10m
1 stop
LCY16:35London City
£644
Find similar
Virgin Atlantic
21 Apr
LCY20:10London City
23h 10m
1 stop
PDX11:20Portland
5 May
PDX13:15Portland
12h 15m
1 stop
LCY09:30London City
£656
Find similar

British Airways flights from London to Portland

Our best British Airways deals on London to Portland flight tickets
British Airways
10 Dec
LHR13:45London Heathrow
10h 10m
PDX15:55Portland
29 Jan
PDX12:35Portland
13h 25m
1 stop
LHR10:00London Heathrow
£586
Find similar
British Airways
11 Feb
LHR13:45London Heathrow
10h 10m
PDX15:55Portland
18 Feb
PDX14:05Portland
14h 10m
1 stop
LHR12:15London Heathrow
£596
Find similar
British Airways
11 Feb
LHR13:45London Heathrow
10h 10m
PDX15:55Portland
18 Feb
PDX17:45Portland
9h 35m
LHR11:20London Heathrow
£603
Find similar

momondo 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, momondo users made 279,928 searches. Data last updated 31 October 2025.
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

LondonPortland

LGW - PDX

LGWPDX

London Gatwick

Tue 21/4

15:40-18:00

1 stop34h 20m

Portland

Tue 5/5

15:45-14:40

1 stop14h 55m

£535

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Tue 21/4

21:25-18:00

1 stop28h 35m

Portland

Tue 5/5

15:45-20:20

1 stop20h 35m

£538

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Wed 10/12

13:45-15:55

Nonstop10h 10m

Portland

Thu 29/1

12:35-10:00

1 stop13h 25m

£586

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Wed 10/12

15:45-12:38

1 stop28h 53m

Portland

Tue 20/1

06:00-10:10

2 stops20h 10m

£587

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Wed 10/12

07:40-18:06

2 stops18h 26m

Portland

Thu 29/1

07:00-05:55

1 stop14h 55m

£591

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Wed 11/2

13:45-15:55

Nonstop10h 10m

Portland

Wed 18/2

14:05-12:15

1 stop14h 10m

£596

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Mon 8/12

06:30-11:25

1 stop12h 55m

Portland

Mon 15/12

17:15-12:50

1 stop11h 35m

£599

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Wed 26/11

06:35-18:40

2 stops20h 05m

Portland

Wed 21/1

07:00-09:40

2 stops18h 40m

£606

LondonPortland

LGW - PDX

LGWPDX

London Gatwick

Fri 6/3

11:20-23:59

2 stops44h 39m

Portland

Tue 10/3

22:59-07:30

2 stops49h 31m

£626

LondonPortland

LCY - PDX

LCYPDX

London City

Wed 11/2

08:40-20:32

2 stops19h 52m

Portland

Wed 18/2

13:25-16:35

1 stop19h 10m

£644

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Portland from

How to get the cheapest flight ticket from London to Portland

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between London and Portland?

What is the cheapest month to fly to Portland?

The cheapest month to fly to Portland from London is in September. Flight prices, which tend to average around £563, are often lower during this time because this is during the off-season. If you don’t want to visit Portland in September, then you should wait until March to fly from London, when ticket prices are also cheap, with an average price of £580.

What is the cheapest day to depart on your flight to Portland?

The cheapest day to depart on your flight to Portland is on a Wednesday when prices can be found for as low as £683. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Portland is Sunday, with ticket prices averaging around £815.

What is the cheapest time of day to depart on your flight to Portland?

Flying to Portland from London in the morning is the least expensive time of day to depart. momondo users have found prices as low as £624 when looking at flights departing in the morning. Try not to purchase tickets in the afternoon because they tend to be around £742. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest London to Portland flight route?

Fly from London Heathrow to Portland for the best London - Portland flight prices

How far in advance should I book a flight to Portland?

You are more likely to see cheaper flights to Portland from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Portland for around £670 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portland from London for as low as £610 on momondo.

What cabin class options are available on London to Portland flights?

There are 3 cabin classes available to choose from on London to Portland flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on London to Portland flights?

You could potentially save up to 27% on your flight if you consider stops on a London to Portland flight.

How have London to Portland flight prices changed over time?

As of October 2025, prices for London to Portland flights are approximately 11% more expensive when compared to flights at the same time last year.

When to book flights from London to Portland

Are you open to changing your travel dates? Check out the ideal times to fly from London to Portland according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap London to Portland (LON to PDX) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London to Portland

Best price found

£619

Fastest flight time

10h 00m

Direct flights

Mon, Tue, Wed, Thu, Fri and Sat

Airports in Portland

1 airport
The best flight deal from London to Portland found on momondo in the last 72 hours is £619
The fastest flight from London to Portland takes 10h 00m
Direct flights go from London to Portland on Monday, Tuesday, Wednesday, Thursday, Friday and Saturday. There are no airlines offering direct flights..
There is 1 airport near Portland: Portland (PDX)
Search flight deals

  • How far is London to Portland by plane?

    The straight-line distance from London to Portland is 4909.8 mi. Flights usually cover this in 10h 00m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from London to Portland Airport?

    Prices for flights from London to Portland Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from London to Portland Airport?

  • How old do you have to be to fly from London to Portland Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London to Portland Airport.

  • What documentation or ID do you need to fly to Portland Airport?

    The travel and health documents you'll need for your trip to Portland Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Portland Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from London to Portland?

  • What is the most popular airline from London to Portland?

Best airlines flying from London to Portland

Compare and see reviews for airlines that fly from London to Portland with momondo
Airline
Rating
Free Cancellation
Price
IcelandairPriceFrom £436Free CancellationRating
7.1
562 reviews
Search Icelandair flights
Air CanadaPriceFrom £506Free CancellationRating
7.1
10,385 reviews
Search Air Canada flights
FinnairPriceFrom £511Free CancellationRating
7.6
1,333 reviews
Search Finnair flights
LufthansaPriceFrom £514Free CancellationRating
6.8
7,543 reviews
Search Lufthansa flights
British AirwaysPriceFrom £515Free CancellationRating
6.7
7,489 reviews
Search British Airways flights
Virgin AtlanticPriceFrom £521Free CancellationRating
7.5
671 reviews
Search Virgin Atlantic flights
United AirlinesPriceFrom £523Free CancellationRating
7.4
8,995 reviews
Search United Airlines flights
KLMPriceFrom £531Free CancellationRating
7.7
1,406 reviews
Search KLM flights
American AirlinesPriceFrom £550Free CancellationRating
7.2
11,033 reviews
Search American Airlines flights
IberiaPriceFrom £583Free CancellationRating
7.0
3,004 reviews
Search Iberia flights

  • Finnair Flights From London to Portland

    Across 2 Finnair flights from London to Portland this week, the average price was £615, with the best Finnair deals starting from £511 round-trip. 1,333 users have rated Finnair on momondo, with an average score of 7.6/10.

  • American Airlines Flights From London to Portland

    £550 is the best American Airlines flight deal from London to Portland found on momondo over the last 72 hours. The average American Airlines ticket price found was closer to £704, however, with flight time and availability significantly affecting the price. American Airlines (7.2/10 from 11,033 user reviews) flies into Portland from London 2 times in an average week so prices can vary.

Travelling to a place near Portland?

Book flights to Portland if you plan to visit one of these locations
Vancouver
Cannon Beach
Astoria
Seaside

Why use momondo?

Why should I use momondo to find a flight deal from London to Portland?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Portland for you.

Can I find flights from London to Portland with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for London to Portland flights to just show those with flexible booking policies.

How can momondo help me find flights from London to Portland?

momondo provides multiple filters to help you find the best flight to Portland from London. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from London to Portland right now. Can momondo alert me if prices change?

Price alerts on flights to Portland from London are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Portland trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sun 30/11
Sun 7/12
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States