What is the cheapest airline that flies from Portland to United Kingdom?

American Airlines, Air Canada, and JetBlue are the most popular carriers operating from Portland to United Kingdom

Which airlines fly to United Kingdom?

British Airways, Aer Lingus and Virgin Atlantic are the top three most popular airlines that fly to United Kingdom from Portland, Maine according to our data. British Airways is the first choice among our users, with 31% of people opting to fly with this airline when travelling to United Kingdom. Keep in mind that there are 11 different airlines that fly to United Kingdom on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Portland Airport to United Kingdom?

Prices for flights from Portland Airport to United Kingdom refresh daily.

How old do you have to be to fly from Portland Airport to United Kingdom?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to United Kingdom.

What documentation or ID do you need to fly to United Kingdom?

The travel and health documents required for your trip to United Kingdom can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at United Kingdom. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

£231 Cheap Flights from Portland, Maine to the United Kingdom in 2026

Voted winner of Europe's Best Travel App 2023

Find the cheapest flights from Portland, Maine to the United Kingdom

Round-trip

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

06:00 - 21:20

PWM

LHR

10h 20m

1 stop

13:50 - 23:28

LHR

PWM

14h 38m

2 stops

£607United Airlines

Thu, 15 Oct - Fri, 16 Oct

06:00 - 20:45

PWM

LHR

9h 45m

1 stop

11:55 - 00:14

LHR

PWM

17h 19m

1 stop

£616JetBlue

Mon, 3 Aug - Wed, 26 Aug

06:00 - 20:45

PWM

LHR

9h 45m

1 stop

08:15 - 00:14

LHR

PWM

20h 59m

1 stop

£637JetBlue

Fri, 7 Aug - Fri, 21 Aug

17:42 - 16:35

PWM

EDI

17h 53m

2 stops

11:25 - 17:17

EDI

PWM

10h 52m

1 stop

£640American Airlines

Mon, 14 Sep - Tue, 22 Sep

17:42 - 16:35

PWM

EDI

17h 53m

2 stops

11:25 - 17:17

EDI

PWM

10h 52m

1 stop

£641American Airlines

Mon, 14 Sep - Tue, 22 Sep

14:35 - 09:20

PWM

EDI

13h 45m

1 stop

14:05 - 23:59

EDI

PWM

14h 54m

1 stop

£646Delta

Mon, 14 Sep - Tue, 22 Sep

16:48 - 07:55

PWM

LHR

34h 07m

1 stop

06:50 - 16:09

LHR

PWM

14h 19m

2 stops

£647Brussels Airlines

Sat, 21 Nov - Tue, 24 Nov

06:00 - 09:35

PWM

LHR

22h 35m

2 stops

07:05 - 23:59

LHR

PWM

21h 54m

2 stops

£648Scandinavian Airlines

Thu, 20 Aug - Fri, 11 Sep

14:35 - 09:20

PWM

EDI

13h 45m

1 stop

14:05 - 23:59

EDI

PWM

14h 54m

1 stop

£649Delta

Mon, 14 Sep - Tue, 22 Sep

14:35 - 16:00

PWM

LHR

20h 25m

2 stops

06:40 - 23:49

LHR

PWM

22h 09m

2 stops

£656Scandinavian Airlines

Thu, 1 Oct - Thu, 15 Oct

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United Airlines flights from Portland, Maine to United Kingdom

Our best United Airlines deals on Portland, Maine to United Kingdom flight tickets

United Airlines

15 Oct

PWM06:00Portland

10h 20m

1 stop

LHR21:20London Heathrow

16 Oct

LHR13:50London Heathrow

14h 38m

2 stops

PWM23:28Portland

£607

United Airlines

10 Nov

PWM17:06Portland

12h 19m

1 stop

LHR10:25London Heathrow

24 Nov

LHR06:50London Heathrow

14h 19m

2 stops

PWM16:09Portland

£661

United Airlines

10 Nov

PWM17:06Portland

12h 19m

1 stop

LHR10:25London Heathrow

24 Nov

LHR06:50London Heathrow

14h 19m

2 stops

PWM16:09Portland

£662

JetBlue flights from Portland, Maine to United Kingdom

Our best JetBlue deals on Portland, Maine to United Kingdom flight tickets

JetBlue

3 Aug

PWM06:00Portland

9h 45m

1 stop

LHR20:45London Heathrow

26 Aug

LHR11:55London Heathrow

17h 19m

1 stop

PWM00:14Portland

£616

JetBlue

7 Aug

PWM06:00Portland

9h 45m

1 stop

LHR20:45London Heathrow

21 Aug

LHR08:15London Heathrow

20h 59m

1 stop

PWM00:14Portland

£637

JetBlue

21 Aug

PWM14:49Portland

13h 31m

1 stop

EDI09:20Edinburgh Turnhouse

11 Sept

EDI12:10Edinburgh Turnhouse

16h 42m

1 stop

PWM23:52Portland

£650

momondo Fare Finder

Use the filters below to find and compare flights from Portland, Maine to the United Kingdom that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Fastest return journey

PortlandLondon

PWM - LHR

PWMLHR

Portland

Thu 15/10

06:00-21:20

1 stop10h 20m

London Heathrow

Fri 16/10

13:50-23:28

2 stops14h 38m

£607

PortlandLondon

PWM - LHR

PWMLHR

Portland

Mon 3/8

06:00-20:45

1 stop9h 45m

London Heathrow

Wed 26/8

11:55-00:14

1 stop17h 19m

£616

PortlandLondon

PWM - LHR

PWMLHR

Portland

Fri 7/8

06:00-20:45

1 stop9h 45m

London Heathrow

Fri 21/8

08:15-00:14

1 stop20h 59m

£637

PortlandEdinburgh

PWM - EDI

PWMEDI

Portland

Mon 14/9

17:42-16:35

2 stops17h 53m

Edinburgh Turnhouse

Tue 22/9

11:25-17:17

1 stop10h 52m

£640

PortlandEdinburgh

PWM - EDI

PWMEDI

Portland

Mon 14/9

17:42-16:35

2 stops17h 53m

Edinburgh Turnhouse

Tue 22/9

11:25-17:17

1 stop10h 52m

£641

PortlandEdinburgh

PWM - EDI

PWMEDI

Portland

Mon 14/9

14:35-09:20

1 stop13h 45m

Edinburgh Turnhouse

Tue 22/9

14:05-23:59

1 stop14h 54m

£646

PortlandLondon

PWM - LHR

PWMLHR

Portland

Sat 21/11

16:48-07:55

1 stop34h 07m

London Heathrow

Tue 24/11

06:50-16:09

2 stops14h 19m

£647

PortlandLondon

PWM - LHR

PWMLHR

Portland

Thu 20/8

06:00-09:35

2 stops22h 35m

London Heathrow

Fri 11/9

07:05-23:59

2 stops21h 54m

£648

PortlandEdinburgh

PWM - EDI

PWMEDI

Portland

Mon 14/9

14:35-09:20

1 stop13h 45m

Edinburgh Turnhouse

Tue 22/9

14:05-23:59

1 stop14h 54m

£649

PortlandLondon

PWM - LHR

PWMLHR

Portland

Thu 1/10

14:35-16:00

2 stops20h 25m

London Heathrow

Thu 15/10

06:40-23:49

2 stops22h 09m

£656

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Portland, Maine to United Kingdom

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

Prices

Airlines

What is the cheapest month to fly to United Kingdom?

The cheapest month to fly to United Kingdom from Portland, Maine is in October. Flight prices, which tend to average around £0, are often lower during this time because this is during the off-season. If you are unable to visit United Kingdom during the month of October, then departing from Portland, Maine during the month January is also very affordable. Most momondo users find prices during this month for around £0.

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

You could potentially save up to 24% on your flight if you consider stops on a Portland, Maine to United Kingdom flight.

Cheap Portland, Maine to United Kingdom flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland, Maine to United Kingdom

Fastest flight time	10h 20m
Direct flights	None

The fastest flight from Portland, Maine to United Kingdom takes 10h 20m

There are no direct flights from Portland, Maine to United Kingdom. There are no popular flight routes from Portland, Maine to United Kingdom.

Search flight deals

Frequently asked questions about flying from Portland, Maine to the United Kingdom

When did momondo last update prices for flights from Portland Airport to United Kingdom?
Prices for flights from Portland Airport to United Kingdom refresh daily.
How old do you have to be to fly from Portland Airport to United Kingdom?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to United Kingdom.
What documentation or ID do you need to fly to United Kingdom?
The travel and health documents required for your trip to United Kingdom can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at United Kingdom. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Why use momondo?

Why should I use momondo to find a flight deal from Portland to United Kingdom?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Portland to United Kingdom . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Portland to United Kingdom with flexible booking policies on momondo?

Yes. All flights to United Kingdom from Portland on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Portland to United Kingdom?

Once you have performed a search for Portland to United Kingdom flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Portland to United Kingdom right now. Can momondo alert me if prices change?

If you are simply researching potential flights to United Kingdom, momondo offers a useful price alert feature which will track prices for flights to United Kingdom from Portland and alert you when they change.