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Cheap flights from the United Kingdom to Portland from £433

This is the cheapest return 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 29/9. 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

JetBlue Logo
08:15 - 22:07LHR-PWM
18h 52m1 stop
JetBlue Logo
07:09 - 09:30PWM-LHR
21h 21m1 stop
£433JetBlue
Find Deal
Mon, 29 Sep - Mon, 6 Oct
JetBlue Logo
08:15 - 22:07LHR-PWM
18h 52m1 stop
JetBlue Logo
14:17 - 20:45PWM-LHR
25h 28m1 stop
£447JetBlue
Find Deal
Fri, 12 Sep - Fri, 19 Sep
JetBlue Logo
08:15 - 22:07LHR-PWM
18h 52m1 stop
JetBlue Logo
14:17 - 20:45PWM-LHR
25h 28m1 stop
£450JetBlue
Find Deal
Fri, 12 Sep - Fri, 19 Sep
Icelandair Logo
08:25 - 13:22LHR-PWM
33h 57m2 stops
Icelandair Logo
14:17 - 20:45PWM-LHR
25h 28m1 stop
£489Icelandair
Find Deal
Fri, 12 Sep - Fri, 19 Sep
Virgin Atlantic Logo
10:55 - 00:11LHR-PWM
18h 16m2 stops
Virgin Atlantic Logo
06:00 - 10:30PWM-LHR
23h 30m2 stops
£497Virgin Atlantic
Find Deal
Mon, 29 Sep - Mon, 6 Oct
Scandinavian Airlines Logo
07:05 - 00:34LHR-PWM
22h 29m2 stops
Scandinavian Airlines Logo
06:33 - 14:35PWM-LHR
27h 02m2 stops
£547Scandinavian Airlines
Find Deal
Fri, 12 Sep - Fri, 19 Sep
Virgin Atlantic Logo
09:20 - 00:11LHR-PWM
19h 51m1 stop
Virgin Atlantic Logo
06:00 - 06:20PWM-LHR
19h 20m2 stops
£559Virgin Atlantic
Find Deal
Fri, 12 Sep - Fri, 19 Sep
United Airlines Logo
06:50 - 19:41LHR-PWM
17h 51m2 stops
United Airlines Logo
06:00 - 06:30PWM-LHR
19h 30m2 stops
£601United Airlines
Find Deal
Sat, 27 Sep - Sat, 4 Oct
Scandinavian Airlines Logo
06:40 - 00:34LHR-PWM
22h 54m3 stops
Scandinavian Airlines Logo
06:33 - 14:35PWM-LHR
27h 02m2 stops
£602Scandinavian Airlines
Find Deal
Fri, 12 Sep - Fri, 19 Sep
United Airlines Logo
11:50 - 14:33MAN-PWM
31h 43m2 stops
United Airlines Logo
16:57 - 08:25PWM-MAN
58h 28m2 stops
£735United Airlines
Find Deal
Sun, 28 Sep - Sun, 5 Oct

Delta flights from United Kingdom to Portland, Maine

Our best Delta deals on United Kingdom to Portland, Maine flight tickets
Delta
27 Sept
LHR11:45London Heathrow
17h 49m
2 stops
PWM00:34Portland
4 Oct
PWM14:41Portland
24h 19m
1 stop
LHR20:00London Heathrow
£565
Find similar
Delta
27 Sept
LHR16:50London Heathrow
12h 44m
1 stop
PWM00:34Portland
4 Oct
PWM14:41Portland
24h 19m
1 stop
LHR20:00London Heathrow
£578
Find similar
Delta
11 Sept
NCL09:30Newcastle upon Tyne
20h 04m
2 stops
PWM00:34Portland
18 Sept
PWM14:41Portland
13h 09m
2 stops
NCL08:50Newcastle upon Tyne
£599
Find similar

United Airlines flights from United Kingdom to Portland, Maine

Our best United Airlines deals on United Kingdom to Portland, Maine flight tickets
United Airlines
27 Sept
LHR06:50London Heathrow
17h 51m
2 stops
PWM19:41Portland
4 Oct
PWM06:00Portland
19h 30m
2 stops
LHR06:30London Heathrow
£601
Find similar
United Airlines
28 Sept
MAN11:50Manchester
31h 43m
2 stops
PWM14:33Portland
5 Oct
PWM16:57Portland
58h 28m
2 stops
MAN08:25Manchester
£735
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 15 August 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

Mon 29/9

08:15-22:07

1 stop18h 52m

Portland

Mon 6/10

07:09-09:30

1 stop21h 21m

£433

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 12/9

08:15-22:07

1 stop18h 52m

Portland

Fri 19/9

14:17-20:45

1 stop25h 28m

£447

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 12/9

08:15-22:07

1 stop18h 52m

Portland

Fri 19/9

14:17-20:45

1 stop25h 28m

£450

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 12/9

08:25-13:22

2 stops33h 57m

Portland

Fri 19/9

14:17-20:45

1 stop25h 28m

£489

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 29/9

10:55-00:11

2 stops18h 16m

Portland

Mon 6/10

06:00-10:30

2 stops23h 30m

£497

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 12/9

07:05-00:34

2 stops22h 29m

Portland

Fri 19/9

06:33-14:35

2 stops27h 02m

£547

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 12/9

09:20-00:11

1 stop19h 51m

Portland

Fri 19/9

06:00-06:20

2 stops19h 20m

£559

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sat 27/9

06:50-19:41

2 stops17h 51m

Portland

Sat 4/10

06:00-06:30

2 stops19h 30m

£601

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 12/9

06:40-00:34

3 stops22h 54m

Portland

Fri 19/9

06:33-14:35

2 stops27h 02m

£602

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Sun 28/9

11:50-14:33

2 stops31h 43m

Portland

Sun 5/10

16:57-08:25

2 stops58h 28m

£735

Flights are sorted by cheapest return flights first.

Showing 1-10 of 13 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 February. Flight prices, which tend to average around £535, 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 £548.

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 £631. 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 £770.

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 £591. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are £777 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

Best price found

£511

Fastest flight time

12h 44m

Direct flights

None

Airports in Portland, Maine

1 airport
The best one-way flight to Portland, Maine from United Kingdom in the past 72 hours is £511. The best return flight deal from United Kingdom to Portland, Maine found on momondo in the last 72 hours is £433.
The fastest flight from United Kingdom to Portland, Maine takes 12h 44m
There are no direct flights from United Kingdom to Portland, Maine. Popular non-direct routes for this connection are London Heathrow Airport - Portland Airport, Manchester Airport - Portland Airport and Newcastle upon Tyne Airport - Portland Airport.
There is 1 airport near Portland, Maine: Portland (PWM)
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 £380Free CancellationRating
7.0
526 reviews
Search Icelandair flights
JetBluePriceFrom £395Free CancellationRating
7.2
2,913 reviews
Search JetBlue flights
Virgin AtlanticPriceFrom £465Free CancellationRating
7.4
657 reviews
Search Virgin Atlantic flights
FinnairPriceFrom £467Free CancellationRating
7.6
1,321 reviews
Search Finnair flights
KLMPriceFrom £478Free CancellationRating
7.8
1,384 reviews
Search KLM flights
United AirlinesPriceFrom £550Free CancellationRating
7.4
8,915 reviews
Search United Airlines flights
Aer LingusPriceFrom £612Free CancellationRating
7.1
1,214 reviews
Search Aer Lingus flights

Travelling to a place near Portland?

Book flights to Portland if you plan to visit one of these locations
Freeport
North Conway

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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Find better results for your trip to the United States

Airports servicing Maine

Bangor Airport