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Cheap flights from the United Kingdom to Portland from $624

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 5/1. 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 round-trip flight deals from the United Kingdom to Portland

Enter your travel dates to find the best prices.
Virgin Atlantic Logo
8:25 pm - 10:27 pm
LHR
-
PWM
31h 02m2 stops
Virgin Atlantic Logo
5:30 am - 8:10 pm
PWM
-
LHR
33h 40m2 stops
$699Virgin Atlantic
Mon, Jan 19 - Mon, Jan 26
American Airlines Logo
5:05 pm - 11:47 am
LHR
-
PWM
23h 42m2 stops
American Airlines Logo
12:43 pm - 10:10 am
PWM
-
LHR
16h 27m2 stops
$702American Airlines
Tue, Feb 17 - Thu, Feb 26
American Airlines Logo
10:15 am - 6:03 pm
LHR
-
PWM
12h 48m1 stop
American Airlines Logo
6:28 pm - 6:35 am
PWM
-
LHR
31h 07m1 stop
$719American Airlines
Tue, Feb 17 - Tue, Feb 24
Multiple Airlines Logo
10:15 am - 10:54 pm
LHR
-
PWM
17h 39m1 stop
Multiple Airlines Logo
6:00 am - 7:50 am
PWM
-
LHR
20h 50m1 stop
$724Multiple Airlines
Wed, Jan 21 - Wed, Jan 28
Delta Logo
11:45 am - 12:20 am
LHR
-
PWM
17h 35m2 stops
Delta Logo
12:20 pm - 10:15 am
PWM
-
LHR
16h 55m2 stops
$725Delta
Wed, Jan 21 - Wed, Jan 28
Delta Logo
8:40 am - 12:18 am
LHR
-
PWM
20h 38m2 stops
Delta Logo
2:35 pm - 6:55 am
PWM
-
LHR
11h 20m1 stop
$766Delta
Thu, Feb 19 - Thu, Feb 26
United Airlines Logo
9:25 am - 2:39 pm
MAN
-
PWM
58h 14m2 stops
United Airlines Logo
4:10 pm - 10:20 am
PWM
-
MAN
37h 10m2 stops
$1,019United Airlines
Thu, Jan 15 - Mon, Jan 19
United Airlines Logo
1:00 pm - 2:29 pm
MAN
-
PWM
54h 29m2 stops
United Airlines Logo
9:40 am - 10:20 am
PWM
-
MAN
19h 40m2 stops
$1,052United Airlines
Thu, Jan 15 - Mon, Jan 19
Multiple Airlines Logo
10:25 am - 10:27 pm
MAN
-
PWM
41h 02m2 stops
Multiple Airlines Logo
2:35 pm - 9:30 pm
PWM
-
MAN
25h 55m2 stops
$1,225Multiple Airlines
Mon, Jan 5 - Sat, Jan 10
Scandinavian Airlines Logo
9:35 am - 11:59 pm
MAN
-
PWM
19h 24m2 stops
Scandinavian Airlines Logo
6:30 am - 8:55 am
PWM
-
MAN
21h 25m3 stops
$1,798Scandinavian Airlines
Thu, Jun 11 - Sat, Jun 20

Delta flights from United Kingdom to Portland, Maine

Our best Delta deals on United Kingdom to Portland, Maine flight tickets
Delta
Jan 21
LHR11:45 amLondon Heathrow
17h 35m
2 stops
PWM12:20 amPortland
Jan 28
PWM12:20 pmPortland
16h 55m
2 stops
LHR10:15 amLondon Heathrow
$725
Find similar
Delta
Feb 19
LHR8:40 amLondon Heathrow
20h 38m
2 stops
PWM12:18 amPortland
Feb 26
PWM2:35 pmPortland
11h 20m
1 stop
LHR6:55 amLondon Heathrow
$766
Find similar
Delta
Feb 19
LHR8:40 amLondon Heathrow
20h 38m
2 stops
PWM12:18 amPortland
Feb 26
PWM2:35 pmPortland
14h 55m
2 stops
LHR10:30 amLondon Heathrow
$781
Find similar

Virgin Atlantic flights from United Kingdom to Portland, Maine

Our best Virgin Atlantic deals on United Kingdom to Portland, Maine flight tickets
Virgin Atlantic
Jan 19
LHR8:25 pmLondon Heathrow
31h 02m
2 stops
PWM10:27 pmPortland
Jan 26
PWM5:30 amPortland
33h 40m
2 stops
LHR8:10 pmLondon Heathrow
$699
Find similar
Virgin Atlantic
Jan 19
LHR10:45 amLondon Heathrow
16h 42m
1 stop
PWM10:27 pmPortland
Jan 26
PWM5:30 amPortland
21h 35m
2 stops
LHR8:05 amLondon Heathrow
$722
Find similar
Virgin Atlantic
Feb 19
LHR12:30 pmLondon Heathrow
15h 36m
1 stop
PWM11:06 pmPortland
Feb 26
PWM5:31 amPortland
19h 54m
1 stop
LHR6:25 amLondon Heathrow
$742
Find similar

momondo Fare Finder

 
Customize 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 832,500 searches. Data last updated December 27, 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 1/19

8:25 pm-10:27 pm

2 stops31h 02m

Portland

Mon 1/26

5:30 am-8:10 pm

2 stops33h 40m

$699

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 2/17

5:05 pm-11:47 am

2 stops23h 42m

Portland

Thu 2/26

12:43 pm-10:10 am

2 stops16h 27m

$702

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 2/17

10:15 am-6:03 pm

1 stop12h 48m

Portland

Tue 2/24

6:28 pm-6:35 am

1 stop31h 07m

$719

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 1/21

10:15 am-10:54 pm

1 stop17h 39m

Portland

Wed 1/28

6:00 am-7:50 am

1 stop20h 50m

$724

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 1/21

11:45 am-12:20 am

2 stops17h 35m

Portland

Wed 1/28

12:20 pm-10:15 am

2 stops16h 55m

$725

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 2/19

8:40 am-12:18 am

2 stops20h 38m

Portland

Thu 2/26

2:35 pm-6:55 am

1 stop11h 20m

$766

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Thu 1/15

9:25 am-2:39 pm

2 stops58h 14m

Portland

Mon 1/19

4:10 pm-10:20 am

2 stops37h 10m

$1,019

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Thu 1/15

1:00 pm-2:29 pm

2 stops54h 29m

Portland

Mon 1/19

9:40 am-10:20 am

2 stops19h 40m

$1,052

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Mon 1/5

10:25 am-10:27 pm

2 stops41h 02m

Portland

Sat 1/10

2:35 pm-9:30 pm

2 stops25h 55m

$1,225

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Thu 6/11

9:35 am-11:59 pm

2 stops19h 24m

Portland

Sat 6/20

6:30 am-8:55 am

3 stops21h 25m

$1,798

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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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 $694, are often lower during this time because this is during the off-season. If you aren’t able to travel to Portland, Maine during the month of October, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $722.

What is the cheapest time of day to depart on your flight to Portland, Maine?

In the morning is the cheapest time of day to fly from United Kingdom to Portland, Maine when you can find flight prices for as low as $1,150. Flying to Portland, Maine in the morning is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the afternoon because they tend to be around $1,296. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

15h 36m

Direct flights

None
The fastest flight from United Kingdom to Portland, Maine takes 15h 36m
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 were last updated today.

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for 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.

Traveling to a place near Portland?

Book flights to Portland if you plan to visit one of these locations
North Conway
Boothbay Harbor
Jackson
Conway
Freeport
Lewiston
Brunswick
Bartlett
Gorham
Auburn
Windham
Intervale
Oxford
Bath
Georgetown
Falmouth
Tamworth

Why use momondo?

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

Finding the right flight to Portland from United Kingdom is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Portland quick and easy, saving you time and money.

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

Yes. momondo allows you to filter the results for United Kingdom to Portland flights to just show those with flexible booking policies.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from United Kingdom to Portland.

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

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