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Cheap flights from the United Kingdom to Portland from £439

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 2/5. 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.
Virgin Atlantic Logo
12:30 - 23:06
LHR
-
PWM
15h 36m
1 stop
Virgin Atlantic Logo
05:31 - 06:25
PWM
-
LHR
19h 54m
1 stop
£551Virgin Atlantic
Mon, 16 Feb - Fri, 27 Feb
KLM Logo
16:35 - 00:18
LHR
-
PWM
12h 43m
1 stop
KLM Logo
14:35 - 17:00
PWM
-
LHR
21h 25m
2 stops
£571KLM
Mon, 16 Feb - Fri, 27 Feb
KLM Logo
20:25 - 00:18
LHR
-
PWM
32h 53m
2 stops
KLM Logo
14:35 - 10:25
PWM
-
LHR
14h 50m
2 stops
£580KLM
Mon, 16 Feb - Fri, 27 Feb
Virgin Atlantic Logo
12:30 - 23:06
LHR
-
PWM
15h 36m
1 stop
Virgin Atlantic Logo
05:31 - 10:50
PWM
-
LHR
24h 19m
2 stops
£588Virgin Atlantic
Fri, 27 Feb - Fri, 6 Mar
Delta Logo
11:45 - 00:18
LHR
-
PWM
17h 33m
2 stops
Delta Logo
14:35 - 06:20
PWM
-
LHR
10h 45m
1 stop
£595Delta
Fri, 13 Feb - Sun, 15 Feb
United Airlines Logo
12:05 - 23:30
LHR
-
PWM
16h 25m
2 stops
United Airlines Logo
15:12 - 11:15
PWM
-
LHR
15h 03m
2 stops
£603United Airlines
Thu, 5 Feb - Mon, 9 Feb
United Airlines Logo
12:05 - 23:30
LHR
-
PWM
16h 25m
2 stops
United Airlines Logo
15:12 - 08:25
PWM
-
LHR
12h 13m
1 stop
£603United Airlines
Thu, 5 Feb - Mon, 9 Feb
United Airlines Logo
12:05 - 23:30
LHR
-
PWM
16h 25m
2 stops
United Airlines Logo
15:12 - 10:50
PWM
-
LHR
14h 38m
2 stops
£606United Airlines
Thu, 5 Feb - Mon, 9 Feb
Delta Logo
12:40 - 00:18
LHR
-
PWM
16h 38m
1 stop
Delta Logo
14:35 - 06:20
PWM
-
LHR
10h 45m
1 stop
£608Delta
Fri, 13 Feb - Sun, 15 Feb
American Airlines Logo
06:30 - 22:50
NCL
-
PWM
21h 20m
2 stops
American Airlines Logo
07:00 - 11:25
PWM
-
NCL
23h 25m
2 stops
£652American Airlines
Thu, 26 Feb - Thu, 5 Mar

Delta flights from United Kingdom to Portland, Maine

Our best Delta deals on United Kingdom to Portland, Maine flight tickets
Delta
13 Feb
LHR11:45London Heathrow
17h 33m
2 stops
PWM00:18Portland
15 Feb
PWM14:35Portland
10h 45m
1 stop
LHR06:20London Heathrow
£595
Delta
13 Feb
LHR12:40London Heathrow
16h 38m
1 stop
PWM00:18Portland
15 Feb
PWM14:35Portland
10h 45m
1 stop
LHR06:20London Heathrow
£608
Delta
27 Feb
LHR10:00London Heathrow
19h 18m
2 stops
PWM00:18Portland
6 Mar
PWM14:35Portland
18h 10m
2 stops
LHR13:45London Heathrow
£609

United Airlines flights from United Kingdom to Portland, Maine

Our best United Airlines deals on United Kingdom to Portland, Maine flight tickets
United Airlines
5 Feb
LHR12:05London Heathrow
16h 25m
2 stops
PWM23:30Portland
9 Feb
PWM15:12Portland
15h 03m
2 stops
LHR11:15London Heathrow
£603
United Airlines
5 Feb
LHR12:05London Heathrow
16h 25m
2 stops
PWM23:30Portland
9 Feb
PWM15:12Portland
12h 13m
1 stop
LHR08:25London Heathrow
£603
United Airlines
5 Feb
LHR12:05London Heathrow
16h 25m
2 stops
PWM23:30Portland
9 Feb
PWM15:12Portland
10h 08m
1 stop
LHR06:20London Heathrow
£606

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 14 January 2026.
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

Mon 16/2

12:30-23:06

1 stop15h 36m

Portland

Fri 27/2

05:31-06:25

1 stop19h 54m

£551

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 16/2

16:35-00:18

1 stop12h 43m

Portland

Fri 27/2

14:35-17:00

2 stops21h 25m

£571

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 16/2

20:25-00:18

2 stops32h 53m

Portland

Fri 27/2

14:35-10:25

2 stops14h 50m

£580

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 27/2

12:30-23:06

1 stop15h 36m

Portland

Fri 6/3

05:31-10:50

2 stops24h 19m

£588

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 13/2

11:45-00:18

2 stops17h 33m

Portland

Sun 15/2

14:35-06:20

1 stop10h 45m

£595

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 5/2

12:05-23:30

2 stops16h 25m

Portland

Mon 9/2

15:12-11:15

2 stops15h 03m

£603

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 5/2

12:05-23:30

2 stops16h 25m

Portland

Mon 9/2

15:12-08:25

1 stop12h 13m

£603

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 5/2

12:05-23:30

2 stops16h 25m

Portland

Mon 9/2

15:12-10:50

2 stops14h 38m

£606

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 13/2

12:40-00:18

1 stop16h 38m

Portland

Sun 15/2

14:35-06:20

1 stop10h 45m

£608

Newcastle upon TynePortland

NCL - PWM

NCLPWM

Newcastle upon Tyne

Thu 26/2

06:30-22:50

2 stops21h 20m

Portland

Thu 5/3

07:00-11:25

2 stops23h 25m

£652

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 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 October. Flight prices, which tend to average around £516, 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 £523.

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

You could potentially save up to 39% 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

Fastest flight time

14h 41m

Direct flights

None
The fastest flight from United Kingdom to Portland, Maine takes 14h 41m
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
JetBluePriceFrom £143Free CancellationRating
7.2
2,884 reviews
Search JetBlue flights
Virgin AtlanticPriceFrom £470Free CancellationRating
7.5
678 reviews
Search Virgin Atlantic flights
FinnairPriceFrom £470Free CancellationRating
7.6
1,349 reviews
Search Finnair flights
IcelandairPriceFrom £488Free CancellationRating
7.1
596 reviews
Search Icelandair flights
KLMPriceFrom £499Free CancellationRating
7.7
1,437 reviews
Search KLM flights
LufthansaPriceFrom £511Free CancellationRating
6.8
7,711 reviews
Search Lufthansa flights
United AirlinesPriceFrom £555Free CancellationRating
7.4
9,157 reviews
Search United Airlines flights
Aer LingusPriceFrom £617Free CancellationRating
7.2
1,435 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