Cheap flights from the United Kingdom to Portland from £393

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.
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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

Enter your travel dates to find the best prices.
United Airlines Logo
11:10 - 23:01LHR-PWM
16h 51m2 stops
United Airlines Logo
06:00 - 20:35PWM-LHR
9h 35m1 stop
£542United Airlines
Find Deal
Tue, 18 Nov - Tue, 25 Nov
United Airlines Logo
10:25 - 21:50LHR-PWM
16h 25m1 stop
United Airlines Logo
14:20 - 06:40PWM-LHR
11h 20m1 stop
£566United Airlines
Find Deal
Tue, 18 Nov - Tue, 25 Nov
United Airlines Logo
09:00 - 10:04LHR-PWM
30h 04m2 stops
United Airlines Logo
05:30 - 05:55PWM-LHR
19h 25m2 stops
£570United Airlines
Find Deal
Fri, 21 Nov - Tue, 25 Nov
United Airlines Logo
08:30 - 21:17LHR-PWM
17h 47m2 stops
United Airlines Logo
15:00 - 08:25PWM-LHR
12h 25m1 stop
£575United Airlines
Find Deal
Thu, 4 Dec - Thu, 11 Dec
United Airlines Logo
12:05 - 18:59LHR-PWM
11h 54m1 stop
United Airlines Logo
15:15 - 06:20PWM-LHR
10h 05m1 stop
£597United Airlines
Find Deal
Fri, 21 Nov - Tue, 25 Nov
JetBlue Logo
12:20 - 13:23LHR-PWM
29h 03m1 stop
JetBlue Logo
06:00 - 20:45PWM-LHR
9h 45m1 stop
£626JetBlue
Find Deal
Sat, 28 Mar - Tue, 31 Mar
Virgin Atlantic Logo
08:40 - 22:23LHR-PWM
18h 43m2 stops
Virgin Atlantic Logo
06:08 - 10:50PWM-LHR
23h 42m2 stops
£639Virgin Atlantic
Find Deal
Thu, 4 Dec - Thu, 11 Dec
Icelandair Logo
12:20 - 13:23LHR-PWM
29h 03m1 stop
Icelandair Logo
06:00 - 06:30PWM-LHR
19h 30m2 stops
£679Icelandair
Find Deal
Sat, 28 Mar - Tue, 31 Mar
Icelandair Logo
09:20 - 13:23LHR-PWM
32h 03m2 stops
Icelandair Logo
06:00 - 06:30PWM-LHR
19h 30m2 stops
£784Icelandair
Find Deal
Sat, 28 Mar - Tue, 31 Mar
KLM Logo
12:30 - 22:19LHR-PWM
14h 49m1 stop
KLM Logo
14:38 - 08:05PWM-LHR
12h 27m1 stop
£2,583KLM
Find Deal
Sun, 2 Nov - Tue, 4 Nov

Delta flights from United Kingdom to Portland, Maine

Our best Delta deals on United Kingdom to Portland, Maine flight tickets
Delta
14 Feb
EDI13:30Edinburgh Turnhouse
15h 19m
2 stops
PWM23:49Portland
24 Feb
PWM14:35Portland
15h 05m
2 stops
EDI10:40Edinburgh Turnhouse
Delta
27 Mar
MAN11:00Manchester
16h 49m
2 stops
PWM23:49Portland
31 Mar
PWM14:35Portland
12h 49m
1 stop
MAN08:24Manchester
Delta
27 Mar
MAN09:05Manchester
18h 44m
2 stops
PWM23:49Portland
31 Mar
PWM14:35Portland
12h 49m
1 stop
MAN08:24Manchester

Scandinavian Airlines flights from United Kingdom to Portland, Maine

Our best Scandinavian Airlines deals on United Kingdom to Portland, Maine flight tickets
Scandinavian Airlines
4 Dec
LHR06:40London Heathrow
22h 19m
2 stops
PWM23:59Portland
11 Dec
PWM14:34Portland
19h 01m
3 stops
LHR14:35London Heathrow
Scandinavian Airlines
4 Dec
LHR06:40London Heathrow
22h 19m
3 stops
PWM23:59Portland
11 Dec
PWM14:34Portland
19h 01m
3 stops
LHR14:35London Heathrow
Scandinavian Airlines
5 Dec
LHR06:40London Heathrow
22h 19m
2 stops
PWM23:59Portland
12 Dec
PWM06:15Portland
22h 05m
3 stops
LHR09:20London Heathrow

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 22 October 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

Tue 18/11

11:10-23:01

2 stops16h 51m

Portland

Tue 25/11

06:00-20:35

1 stop9h 35m

£542

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 18/11

10:25-21:50

1 stop16h 25m

Portland

Tue 25/11

14:20-06:40

1 stop11h 20m

£566

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 21/11

09:00-10:04

2 stops30h 04m

Portland

Tue 25/11

05:30-05:55

2 stops19h 25m

£570

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 4/12

08:30-21:17

2 stops17h 47m

Portland

Thu 11/12

15:00-08:25

1 stop12h 25m

£575

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 21/11

12:05-18:59

1 stop11h 54m

Portland

Tue 25/11

15:15-06:20

1 stop10h 05m

£597

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sat 28/3

12:20-13:23

1 stop29h 03m

Portland

Tue 31/3

06:00-20:45

1 stop9h 45m

£626

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 4/12

08:40-22:23

2 stops18h 43m

Portland

Thu 11/12

06:08-10:50

2 stops23h 42m

£639

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sat 28/3

12:20-13:23

1 stop29h 03m

Portland

Tue 31/3

06:00-06:30

2 stops19h 30m

£679

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sat 28/3

09:20-13:23

2 stops32h 03m

Portland

Tue 31/3

06:00-06:30

2 stops19h 30m

£784

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sun 2/11

12:30-22:19

1 stop14h 49m

Portland

Tue 4/11

14:38-08:05

1 stop12h 27m

£2,583

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 £541, 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 £546.

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 £639. 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 £780.

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 £599. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are £787 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.
  • 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 £385Free CancellationRating
7.1
561 reviews
Search Icelandair flights
JetBluePriceFrom £400Free CancellationRating
7.2
2,908 reviews
Search JetBlue flights
Virgin AtlanticPriceFrom £472Free CancellationRating
7.5
670 reviews
Search Virgin Atlantic flights
FinnairPriceFrom £473Free CancellationRating
7.6
1,333 reviews
Search Finnair flights
KLMPriceFrom £502Free CancellationRating
7.7
1,404 reviews
Search KLM flights
United AirlinesPriceFrom £558Free CancellationRating
7.4
8,990 reviews
Search United Airlines flights
Aer LingusPriceFrom £620Free CancellationRating
7.2
1,350 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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1 adult
Fri 21/11
Fri 28/11

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