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Cheap flights from the United Kingdom to Portland from £435

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 28/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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

American Airlines Logo
11:40 - 22:32LHR-PWM
15h 52m2 stops
American Airlines Logo
16:14 - 07:50PWM-LHR
10h 36m1 stop
£468American Airlines
Find Deal
Sat, 28 Feb - Tue, 3 Mar
Virgin Atlantic Logo
06:30 - 22:19LHR-PWM
19h 49m2 stops
Virgin Atlantic Logo
13:25 - 10:15PWM-LHR
15h 50m2 stops
£475Virgin Atlantic
Find Deal
Wed, 29 Oct - Mon, 10 Nov
Multiple Airlines Logo
11:45 - 22:10LHR-PWM
14h 25m1 stop
Multiple Airlines Logo
07:02 - 07:20PWM-LHR
19h 18m1 stop
£488Multiple Airlines
Find Deal
Wed, 29 Oct - Mon, 10 Nov
Delta Logo
08:40 - 00:34LHR-PWM
20h 54m2 stops
Delta Logo
14:38 - 11:25PWM-LHR
15h 47m1 stop
£495Delta
Find Deal
Sat, 27 Sep - Mon, 6 Oct
American Airlines Logo
13:10 - 22:32LHR-PWM
14h 22m1 stop
American Airlines Logo
13:16 - 06:35PWM-LHR
12h 19m1 stop
£500American Airlines
Find Deal
Sat, 28 Feb - Tue, 3 Mar
Delta Logo
12:55 - 00:34LHR-PWM
16h 39m1 stop
Delta Logo
06:50 - 09:15PWM-LHR
21h 25m1 stop
£508Delta
Find Deal
Sat, 27 Sep - Mon, 6 Oct
United Airlines Logo
06:35 - 23:59LHR-PWM
21h 24m2 stops
United Airlines Logo
19:44 - 11:05PWM-LHR
10h 21m1 stop
£547United Airlines
Find Deal
Thu, 30 Oct - Thu, 6 Nov
United Airlines Logo
06:35 - 23:59LHR-PWM
21h 24m2 stops
United Airlines Logo
14:20 - 06:40PWM-LHR
11h 20m1 stop
£549United Airlines
Find Deal
Fri, 31 Oct - Fri, 7 Nov
Multiple Airlines Logo
13:40 - 23:59MAN-PWM
15h 19m2 stops
Multiple Airlines Logo
14:34 - 10:10PWM-MAN
14h 36m2 stops
£564Multiple Airlines
Find Deal
Tue, 2 Dec - Mon, 8 Dec
Icelandair Logo
09:20 - 15:50LHR-PWM
34h 30m2 stops
Icelandair Logo
16:45 - 20:45PWM-LHR
48h 00m2 stops
£765Icelandair
Find Deal
Sun, 26 Oct - Sat, 1 Nov

American Airlines flights from United Kingdom to Portland, Maine

Our best American Airlines deals on United Kingdom to Portland, Maine flight tickets
American Airlines
28 Feb
LHR11:40London Heathrow
15h 52m
2 stops
PWM22:32Portland
3 Mar
PWM16:14Portland
10h 36m
1 stop
LHR07:50London Heathrow
£468
Find similar
American Airlines
28 Feb
LHR13:10London Heathrow
14h 22m
1 stop
PWM22:32Portland
3 Mar
PWM13:16Portland
12h 19m
1 stop
LHR06:35London Heathrow
£500
Find similar
American Airlines
10 Mar
LHR13:10London Heathrow
14h 30m
2 stops
PWM23:40Portland
14 Mar
PWM16:11Portland
13h 04m
2 stops
LHR09:15London Heathrow
£2,485
Find similar

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 Oct
LHR06:30London Heathrow
19h 49m
2 stops
PWM22:19Portland
10 Nov
PWM13:25Portland
15h 50m
2 stops
LHR10:15London Heathrow
£475
Find similar
Virgin Atlantic
8 Nov
MAN13:30Manchester
13h 49m
1 stop
PWM22:19Portland
15 Nov
PWM06:00Portland
43h 40m
2 stops
MAN06:40Manchester
£573
Find similar
Virgin Atlantic
2 Oct
MAN12:35Manchester
16h 36m
1 stop
PWM00:11Portland
6 Oct
PWM06:00Portland
21h 35m
1 stop
MAN08:35Manchester
£576
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 16 September 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

Sat 28/2

11:40-22:32

2 stops15h 52m

Portland

Tue 3/3

16:14-07:50

1 stop10h 36m

£468

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 29/10

06:30-22:19

2 stops19h 49m

Portland

Mon 10/11

13:25-10:15

2 stops15h 50m

£475

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 29/10

11:45-22:10

1 stop14h 25m

Portland

Mon 10/11

07:02-07:20

1 stop19h 18m

£488

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sat 27/9

08:40-00:34

2 stops20h 54m

Portland

Mon 6/10

14:38-11:25

1 stop15h 47m

£495

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sat 28/2

13:10-22:32

1 stop14h 22m

Portland

Tue 3/3

13:16-06:35

1 stop12h 19m

£500

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sat 27/9

12:55-00:34

1 stop16h 39m

Portland

Mon 6/10

06:50-09:15

1 stop21h 25m

£508

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 30/10

06:35-23:59

2 stops21h 24m

Portland

Thu 6/11

19:44-11:05

1 stop10h 21m

£547

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 31/10

06:35-23:59

2 stops21h 24m

Portland

Fri 7/11

14:20-06:40

1 stop11h 20m

£549

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Tue 2/12

13:40-23:59

2 stops15h 19m

Portland

Mon 8/12

14:34-10:10

2 stops14h 36m

£564

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sun 26/10

09:20-15:50

2 stops34h 30m

Portland

Sat 1/11

16:45-20:45

2 stops48h 00m

£765

Flights are sorted by cheapest return flights first.

Showing 1-10 of 19 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 February. Flight prices, which tend to average around £534, are often lower during this time because this is during the off-season. The month of September is another great option to travel to Portland, Maine, with average flight prices from United Kingdom averaging around £547.

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 £630. 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 £768.

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 £590. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are £775 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 £379Free CancellationRating
7.0
544 reviews
Search Icelandair flights
JetBluePriceFrom £394Free CancellationRating
7.2
2,914 reviews
Search JetBlue flights
Virgin AtlanticPriceFrom £465Free CancellationRating
7.4
664 reviews
Search Virgin Atlantic flights
FinnairPriceFrom £466Free CancellationRating
7.6
1,324 reviews
Search Finnair flights
KLMPriceFrom £477Free CancellationRating
7.8
1,386 reviews
Search KLM flights
United AirlinesPriceFrom £549Free CancellationRating
7.4
8,924 reviews
Search United Airlines flights
Aer LingusPriceFrom £611Free CancellationRating
7.2
1,274 reviews
Search Aer Lingus flights

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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