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Cheap flights from the United Kingdom to Boston from £382

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 Boston departing on 4/2. 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 Boston

Recent return flight deals from the United Kingdom to Boston

Enter your travel dates to find the best prices.
Virgin Atlantic Logo
10:45 - 22:27
LHR
-
PWM
16h 42m1 stop
Virgin Atlantic Logo
05:30 - 06:25
PWM
-
LHR
19h 55m1 stop
£522Virgin Atlantic
Tue, 3 Feb - Tue, 10 Feb
Virgin Atlantic Logo
08:55 - 22:27
LHR
-
PWM
18h 32m1 stop
Virgin Atlantic Logo
05:31 - 06:25
PWM
-
LHR
19h 54m1 stop
£531Virgin Atlantic
Mon, 9 Feb - Mon, 16 Feb
Multiple Airlines Logo
10:05 - 22:07
LHR
-
PWM
17h 02m2 stops
Multiple Airlines Logo
06:00 - 06:35
PWM
-
LHR
19h 35m1 stop
£534Multiple Airlines
Tue, 3 Feb - Tue, 10 Feb
Delta Logo
10:00 - 00:20
LHR
-
PWM
19h 20m2 stops
Delta Logo
12:10 - 08:45
PWM
-
LHR
15h 35m1 stop
£537Delta
Mon, 2 Feb - Mon, 9 Feb
Multiple Airlines Logo
10:15 - 22:54
LHR
-
PWM
17h 39m1 stop
Multiple Airlines Logo
12:40 - 07:50
PWM
-
LHR
14h 10m1 stop
£540Multiple Airlines
Tue, 3 Feb - Tue, 10 Feb
Delta Logo
08:40 - 22:27
LHR
-
PWM
18h 47m2 stops
Delta Logo
14:35 - 13:45
PWM
-
LHR
18h 10m2 stops
£549Delta
Mon, 9 Feb - Mon, 16 Feb
United Airlines Logo
12:05 - 23:28
LHR
-
PWM
16h 23m2 stops
United Airlines Logo
09:40 - 10:50
PWM
-
LHR
20h 10m1 stop
£562United Airlines
Tue, 3 Feb - Tue, 10 Feb
United Airlines Logo
16:00 - 23:28
LHR
-
PWM
12h 28m1 stop
United Airlines Logo
16:10 - 11:15
PWM
-
LHR
14h 05m1 stop
£590United Airlines
Tue, 3 Feb - Tue, 10 Feb
Scandinavian Airlines Logo
19:15 - 00:20
MAN
-
PWM
34h 05m2 stops
Scandinavian Airlines Logo
06:17 - 09:30
PWM
-
MAN
22h 13m2 stops
£625Scandinavian Airlines
Tue, 3 Feb - Tue, 10 Feb
Scandinavian Airlines Logo
10:10 - 00:18
MAN
-
PWM
43h 08m2 stops
Scandinavian Airlines Logo
14:35 - 18:35
PWM
-
MAN
23h 00m2 stops
£638Scandinavian Airlines
Sat, 28 Feb - Wed, 4 Mar

Virgin Atlantic flights from United Kingdom to Portland, Maine

Our best Virgin Atlantic deals on United Kingdom to Portland, Maine flight tickets
Virgin Atlantic
3 Feb
LHR10:45London Heathrow
16h 42m
1 stop
PWM22:27Portland
10 Feb
PWM05:30Portland
19h 55m
1 stop
LHR06:25London Heathrow
£522
Find similar
Virgin Atlantic
9 Feb
LHR08:55London Heathrow
18h 32m
1 stop
PWM22:27Portland
16 Feb
PWM05:31Portland
19h 54m
1 stop
LHR06:25London Heathrow
£531
Find similar
Virgin Atlantic
3 Feb
MAN13:30Manchester
13h 57m
1 stop
PWM22:27Portland
10 Feb
PWM05:30Portland
24h 00m
1 stop
MAN10:30Manchester
£629
Find similar

Delta flights from United Kingdom to Portland, Maine

Our best Delta deals on United Kingdom to Portland, Maine flight tickets
Delta
3 Feb
LHR08:40London Heathrow
18h 47m
2 stops
PWM22:27Portland
10 Feb
PWM14:35Portland
13h 45m
1 stop
LHR09:20London Heathrow
£537
Find similar
Delta
9 Feb
LHR08:40London Heathrow
18h 47m
2 stops
PWM22:27Portland
16 Feb
PWM14:35Portland
18h 10m
2 stops
LHR13:45London Heathrow
£549
Find similar
Delta
4 Feb
MAN13:30Manchester
27h 33m
2 stops
PWM12:03Portland
11 Feb
PWM06:17Portland
22h 53m
2 stops
MAN10:10Manchester
£626
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 21 December 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 3/2

10:45-22:27

1 stop16h 42m

Portland

Tue 10/2

05:30-06:25

1 stop19h 55m

£522

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 9/2

08:55-22:27

1 stop18h 32m

Portland

Mon 16/2

05:31-06:25

1 stop19h 54m

£531

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 3/2

10:05-22:07

2 stops17h 02m

Portland

Tue 10/2

06:00-06:35

1 stop19h 35m

£534

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 2/2

10:00-00:20

2 stops19h 20m

Portland

Mon 9/2

12:10-08:45

1 stop15h 35m

£537

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 3/2

10:15-22:54

1 stop17h 39m

Portland

Tue 10/2

12:40-07:50

1 stop14h 10m

£540

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 9/2

08:40-22:27

2 stops18h 47m

Portland

Mon 16/2

14:35-13:45

2 stops18h 10m

£549

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 3/2

12:05-23:28

2 stops16h 23m

Portland

Tue 10/2

09:40-10:50

1 stop20h 10m

£562

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 3/2

16:00-23:28

1 stop12h 28m

Portland

Tue 10/2

16:10-11:15

1 stop14h 05m

£590

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Tue 3/2

19:15-00:20

2 stops34h 05m

Portland

Tue 10/2

06:17-09:30

2 stops22h 13m

£625

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Sat 28/2

10:10-00:18

2 stops43h 08m

Portland

Wed 4/3

14:35-18:35

2 stops23h 00m

£638

Flights are sorted by cheapest return flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
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See travel insights to Boston 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 £519, 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 £540.

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.

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 57m

Direct flights

None
The fastest flight from United Kingdom to Portland, Maine takes 14h 57m
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 £400Free CancellationRating
7.2
2,896 reviews
Search JetBlue flights
Virgin AtlanticPriceFrom £471Free CancellationRating
7.5
675 reviews
Search Virgin Atlantic flights
FinnairPriceFrom £473Free CancellationRating
7.6
1,339 reviews
Search Finnair flights
IcelandairPriceFrom £491Free CancellationRating
7.0
592 reviews
Search Icelandair flights
KLMPriceFrom £502Free CancellationRating
7.7
1,432 reviews
Search KLM flights
LufthansaPriceFrom £514Free CancellationRating
6.8
7,644 reviews
Search Lufthansa flights
United AirlinesPriceFrom £558Free CancellationRating
7.4
9,102 reviews
Search United Airlines flights
Aer LingusPriceFrom £620Free CancellationRating
7.2
1,408 reviews
Search Aer Lingus flights

Travelling to a place near Boston?

Book flights to Boston 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