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Cheap flights from the United Kingdom to Portland from £344

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from the United Kingdom to Portland departing on 26/11. 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

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Find the cheapest flights from the United Kingdom to Portland

Recent return flight deals from the United Kingdom to Portland

Enter your travel dates to find the best prices.
United Airlines Logo
07:30 - 18:43LHR-PWM
16h 13m2 stops
United Airlines Logo
15:20 - 08:25PWM-LHR
12h 05m1 stop
£564United Airlines
Find Deal
Wed, 3 Dec - Wed, 10 Dec
United Airlines Logo
07:30 - 18:54LHR-PWM
16h 24m2 stops
United Airlines Logo
15:20 - 10:05PWM-LHR
13h 45m2 stops
£569United Airlines
Find Deal
Wed, 3 Dec - Wed, 10 Dec
Austrian Airlines Logo
12:00 - 18:43LHR-PWM
11h 43m1 stop
Austrian Airlines Logo
10:35 - 21:20PWM-LHR
29h 45m1 stop
£573Austrian Airlines
Find Deal
Wed, 3 Dec - Wed, 10 Dec
United Airlines Logo
06:50 - 18:50LHR-PWM
17h 00m2 stops
United Airlines Logo
14:31 - 06:40PWM-LHR
11h 09m1 stop
£574United Airlines
Find Deal
Mon, 12 Jan - Mon, 19 Jan
Air Canada Logo
11:10 - 23:09LHR-PWM
16h 59m2 stops
Air Canada Logo
06:00 - 06:30PWM-LHR
19h 30m2 stops
£579Air Canada
Find Deal
Wed, 3 Dec - Wed, 10 Dec
Air Canada Logo
13:25 - 13:56LHR-PWM
29h 31m2 stops
Air Canada Logo
19:27 - 07:10PWM-LHR
30h 43m2 stops
£594Air Canada
Find Deal
Tue, 13 Jan - Sun, 18 Jan
KLM Logo
12:40 - 00:20LHR-PWM
16h 40m1 stop
KLM Logo
14:35 - 10:15PWM-LHR
14h 40m1 stop
£669KLM
Find Deal
Mon, 12 Jan - Sun, 18 Jan
KLM Logo
10:45 - 22:14LHR-PWM
16h 29m1 stop
KLM Logo
16:53 - 08:45PWM-LHR
10h 52m1 stop
£713KLM
Find Deal
Mon, 1 Dec - Mon, 8 Dec
Austrian Airlines Logo
09:10 - 18:13LHR-PWM
13h 03m1 stop
Austrian Airlines Logo
11:17 - 05:55PWM-LHR
13h 38m1 stop
£891Austrian Airlines
Find Deal
Sat, 28 Mar - Tue, 31 Mar
Virgin Atlantic Logo
15:50 - 22:43LHR-PWM
35h 53m1 stop
Virgin Atlantic Logo
05:45 - 06:25PWM-LHR
19h 40m1 stop
£896Virgin Atlantic
Find Deal
Mon, 29 Dec - Sun, 4 Jan

Virgin Atlantic flights from United Kingdom to Portland, Maine

Our best Virgin Atlantic deals on United Kingdom to Portland, Maine flight tickets
Virgin Atlantic
29 Dec
LHR15:50London Heathrow
35h 53m
1 stop
PWM22:43Portland
4 Jan
PWM05:45Portland
19h 40m
1 stop
LHR06:25London Heathrow
£896
Find similar
Virgin Atlantic
8 Nov
LHR06:30London Heathrow
20h 49m
2 stops
PWM22:19Portland
10 Nov
PWM06:00Portland
19h 20m
2 stops
LHR06:20London Heathrow
£990
Find similar
Virgin Atlantic
8 Nov
LHR12:30London Heathrow
14h 49m
1 stop
PWM22:19Portland
10 Nov
PWM13:25Portland
17h 15m
1 stop
LHR11:40London Heathrow
£1,003
Find similar

Air Canada flights from United Kingdom to Portland, Maine

Our best Air Canada deals on United Kingdom to Portland, Maine flight tickets
Air Canada
3 Dec
LHR11:10London Heathrow
16h 59m
2 stops
PWM23:09Portland
10 Dec
PWM06:00Portland
19h 30m
2 stops
LHR06:30London Heathrow
£579
Find similar
Air Canada
13 Jan
LHR13:25London Heathrow
29h 31m
2 stops
PWM13:56Portland
18 Jan
PWM19:27Portland
30h 43m
2 stops
LHR07:10London Heathrow
£594
Find similar
Air Canada
1 Dec
LHR09:00London Heathrow
43h 09m
2 stops
PWM23:09Portland
8 Dec
PWM06:00Portland
19h 30m
2 stops
LHR06:30London Heathrow
£604
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from United Kingdom to Portland, Maine 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 6 November 2025.
Use the filters below to find and compare flights from the United Kingdom to Portland, Maine that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 3/12

07:30-18:43

2 stops16h 13m

Portland

Wed 10/12

15:20-08:25

1 stop12h 05m

£564

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 3/12

07:30-18:54

2 stops16h 24m

Portland

Wed 10/12

15:20-10:05

2 stops13h 45m

£569

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 3/12

12:00-18:43

1 stop11h 43m

Portland

Wed 10/12

10:35-21:20

1 stop29h 45m

£573

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 12/1

06:50-18:50

2 stops17h 00m

Portland

Mon 19/1

14:31-06:40

1 stop11h 09m

£574

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 3/12

11:10-23:09

2 stops16h 59m

Portland

Wed 10/12

06:00-06:30

2 stops19h 30m

£579

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 13/1

13:25-13:56

2 stops29h 31m

Portland

Sun 18/1

19:27-07:10

2 stops30h 43m

£594

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 12/1

12:40-00:20

1 stop16h 40m

Portland

Sun 18/1

14:35-10:15

1 stop14h 40m

£669

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 1/12

10:45-22:14

1 stop16h 29m

Portland

Mon 8/12

16:53-08:45

1 stop10h 52m

£713

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sat 28/3

09:10-18:13

1 stop13h 03m

Portland

Tue 31/3

11:17-05:55

1 stop13h 38m

£891

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 29/12

15:50-22:43

1 stop35h 53m

Portland

Sun 4/1

05:45-06:25

1 stop19h 40m

£896

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Portland from

How to get the cheapest flight ticket from United Kingdom to Portland, Maine

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 cheapest month to fly to Portland, Maine?

The cheapest month to fly to Portland, Maine from United Kingdom is in September. Flight prices, which tend to average around £555, are often lower during this time because this is during the off-season. The month of February is another great option to travel to Portland, Maine, with average flight prices from United Kingdom averaging around £561.

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

According to our data, Monday is the cheapest day to fly to Portland, Maine from United Kingdom. The lowest ticket price found for a Monday departure recently was £656. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Be sure to avoid booking your departure on a Friday as prices are generally higher than usual. According to our data, the average ticket price to Portland, Maine on Friday is £801.

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

Our data shows that the cheapest United Kingdom to Portland, Maine flights are usually those with departure times in the evening. Our users have found flights to Portland, Maine in the evening for as low as £615. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are £808 on average. Flights to Portland, Maine from United Kingdom in the afternoon are generally more expensive because this time of day is more convenient for travellers’ schedules.

Can stopping save me money on United Kingdom to Portland, Maine flights?

You could potentially save up to 14% on your flight if you consider stops on a United Kingdom to Portland, Maine flight.

Cheap United Kingdom to Portland, Maine flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from United Kingdom to Portland, Maine

Direct flights

None
There are no direct flights from United Kingdom to Portland, Maine. There are no popular flight routes from United Kingdom to Portland, Maine.
Search flight deals

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

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

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

  • How old do you have to be to fly from United Kingdom 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 United Kingdom 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.

Best airlines flying from United Kingdom to Portland, Maine

Compare and see reviews for airlines that fly from United Kingdom to Portland, Maine with momondo
Airline
Rating
Free Cancellation
Price
IcelandairPriceFrom £395Free CancellationRating
7.1
571 reviews
Search Icelandair flights
JetBluePriceFrom £410Free CancellationRating
7.2
2,907 reviews
Search JetBlue flights
Virgin AtlanticPriceFrom £485Free CancellationRating
7.5
672 reviews
Search Virgin Atlantic flights
FinnairPriceFrom £486Free CancellationRating
7.6
1,335 reviews
Search Finnair flights
KLMPriceFrom £515Free CancellationRating
7.7
1,405 reviews
Search KLM flights
LufthansaPriceFrom £528Free CancellationRating
6.8
7,555 reviews
Search Lufthansa flights
United AirlinesPriceFrom £573Free CancellationRating
7.4
9,003 reviews
Search United Airlines flights
Aer LingusPriceFrom £637Free CancellationRating
7.2
1,365 reviews
Search Aer Lingus flights

Travelling to a place near Portland?

Book flights to Portland if you plan to visit one of these locations
Bath

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Portland from United Kingdom.

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

All flight searches from United Kingdom to Portland on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from United Kingdom to Portland?

Once all potential United Kingdom to Portland flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are not ready to book a flight from United Kingdom to Portland now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Portland and let you know when they change.

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Airports servicing Maine

Bangor Airport