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

WestJet, TAP AIR PORTUGAL, and Virgin Atlantic are the most popular carriers operating from Portland to United Kingdom

Which airlines fly to United Kingdom?

British Airways, Virgin Atlantic and Icelandair 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 48% of people opting to fly with this airline when travelling to United Kingdom. Keep in mind that there are 10 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.

£467 Discover Cheap Flights from Portland to the United Kingdom in 2025

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

Round-trip

One-way

Cheap return flights

These are some of the best return flight deals from Portland, Maine to the United Kingdom that have been recently found on momondo from popular airlines, departing in the coming months.

06:10 - 20:45PWM-LHR

9h 35m1 stop

08:15 - 16:40LHR-PWM

13h 25m1 stop

£467JetBlue

Find Deal

Sun, 6 Apr - Sun, 13 Apr

19:20 - 10:50PWM-LHR

11h 30m1 stop

15:00 - 23:15LHR-PWM

36h 15m2 stops

£536United Airlines

Find Deal

Mon, 10 Mar - Fri, 28 Mar

05:30 - 06:20PWM-LHR

20h 50m1 stop

06:30 - 23:14LHR-PWM

20h 44m2 stops

£538Delta

Find Deal

Mon, 10 Mar - Wed, 19 Mar

13:01 - 06:35PWM-LHR

13h 34m1 stop

13:10 - 22:57LHR-PWM

13h 47m1 stop

£547

Find Deal

Mon, 10 Mar - Wed, 19 Mar

15:08 - 07:45PWM-MAN

11h 37m1 stop

14:00 - 00:23MAN-PWM

15h 23m1 stop

£551Delta

Find Deal

Thu, 3 Apr - Thu, 10 Apr

16:11 - 06:35PWM-LHR

10h 24m1 stop

13:10 - 22:57LHR-PWM

13h 47m1 stop

£555

Find Deal

Mon, 10 Mar - Fri, 28 Mar

12:55 - 11:35PWM-MAN

17h 40m2 stops

07:00 - 22:49MAN-PWM

20h 49m2 stops

£566American Airlines

Find Deal

Thu, 3 Apr - Thu, 10 Apr

06:15 - 10:25PWM-MAN

23h 10m3 stops

06:05 - 23:27MAN-PWM

22h 22m3 stops

£589Air Canada

Find Deal

Thu, 3 Apr - Thu, 10 Apr

12:50 - 06:40PWM-LHR

12h 50m1 stop

13:30 - 23:54LHR-PWM

15h 24m2 stops

£600American Airlines

Find Deal

Sun, 6 Apr - Sun, 13 Apr

06:15 - 07:20PWM-EDI

44h 05m2 stops

09:00 - 23:27EDI-PWM

43h 27m2 stops

£600Air Canada

Find Deal

Sun, 6 Apr - Sun, 13 Apr

United Airlines flights from Portland, Maine to United Kingdom

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

United Airlines

10 Mar

PWM19:20Portland

11h 30m

1 stop

LHR10:50London Heathrow

28 Mar

LHR15:00London Heathrow

36h 15m

2 stops

PWM23:15Portland

£536

Find similar

United Airlines

17 Mar

PWM15:55Portland

10h 25m

1 stop

LHR06:20London Heathrow

24 Mar

LHR15:00London Heathrow

36h 47m

2 stops

PWM23:47Portland

£576

Find similar

United Airlines

17 Mar

PWM19:20Portland

31h 50m

2 stops

LHR07:10London Heathrow

24 Mar

LHR15:00London Heathrow

36h 47m

2 stops

PWM23:47Portland

£580

Find similar

Delta flights from Portland, Maine to United Kingdom

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

Delta

10 Mar

PWM05:30Portland

20h 50m

1 stop

LHR06:20London Heathrow

19 Mar

LHR06:30London Heathrow

20h 44m

2 stops

PWM23:14Portland

£538

Find similar

Delta

3 Apr

PWM15:08Portland

11h 37m

1 stop

MAN07:45Manchester

10 Apr

MAN14:00Manchester

15h 23m

1 stop

PWM00:23Portland

£551

Find similar

Delta

3 Apr

PWM15:08Portland

20h 47m

2 stops

MAN16:55Manchester

10 Apr

MAN12:45Manchester

16h 14m

1 stop

PWM23:59Portland

£565

Find similar

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 November. Flight prices, which tend to average around £564, 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 November, then departing from Portland, Maine during the month April is also very affordable. Most momondo users find prices during this month for around £581.

What is the cheapest day to depart on your flight to United Kingdom?

The cheapest day to depart from Portland, Maine to United Kingdom is on a Monday. Travellers who choose to depart for United Kingdom on a Monday will often find tickets for as low as £0. When flying out on a Tuesday, the most expensive travel day of the week, you can expect to see flight prices from Portland, Maine to United Kingdom for around £586.

What is the cheapest time of day to depart on your flight to United Kingdom?

The cheapest time of day to fly to United Kingdom is in the afternoon when flights can be purchased for as low as £0. Try not to purchase tickets in the morning because they tend to be around £592. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

Best price found	£494
Fastest flight time	9h 35m
Direct flights	None
Airports in United Kingdom	6 airports

The best one-way flight to United Kingdom from Portland, Maine in the past 72 hours is £494. The best return flight deal from Portland, Maine to United Kingdom found on momondo in the last 72 hours is £467.

The fastest flight from Portland, Maine to United Kingdom takes 9h 35m

There are no direct flights from Portland, Maine to United Kingdom. Popular non-direct routes for this connection are Portland Airport - London Heathrow Airport, Portland Airport - London Gatwick Airport and Portland Airport - London City Airport.

There are 6 airports near United Kingdom: London City (LCY), London Heathrow (LHR), Manchester (MAN), Edinburgh Turnhouse (EDI), London Gatwick (LGW), Glasgow Intl (GLA)

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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.