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Cheap flights from the United Kingdom to Portland from $459

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 5/6. 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
1 adult, Economy, 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.
JetBlue Logo
8:15 am - 11:03 pm
LHR
-
PWM
19h 48m
1 stop
JetBlue Logo
7:20 am - 9:30 am
PWM
-
LHR
21h 10m
1 stop
$666JetBlue
Fri, May 8 - Fri, May 15
JetBlue Logo
8:15 am - 10:59 pm
LHR
-
PWM
19h 44m
1 stop
JetBlue Logo
7:30 am - 9:30 am
PWM
-
LHR
21h 00m
1 stop
$687JetBlue
Tue, Apr 21 - Tue, Apr 28
JetBlue Logo
8:15 am - 11:02 pm
LHR
-
PWM
19h 47m
1 stop
JetBlue Logo
7:20 am - 9:30 am
PWM
-
LHR
21h 10m
1 stop
$717JetBlue
Sun, May 10 - Sun, May 17
United Airlines Logo
7:25 am - 6:58 pm
LHR
-
PWM
16h 33m
2 stops
United Airlines Logo
11:09 am - 6:55 am
PWM
-
LHR
14h 46m
2 stops
$867United Airlines
Tue, Apr 21 - Tue, Apr 28
Multiple Airlines Logo
9:25 pm - 11:03 pm
LHR
-
PWM
30h 38m
2 stops
Multiple Airlines Logo
2:36 pm - 11:55 am
PWM
-
LHR
16h 19m
2 stops
$880Multiple Airlines
Mon, May 4 - Tue, May 26
Scandinavian Airlines Logo
7:50 pm - 12:43 am
LHR
-
PWM
33h 53m
2 stops
Scandinavian Airlines Logo
2:38 pm - 9:20 am
PWM
-
LHR
37h 42m
2 stops
$891Scandinavian Airlines
Fri, May 8 - Fri, May 15
Multiple Airlines Logo
1:05 pm - 11:03 pm
MAN
-
PWM
38h 58m
2 stops
Multiple Airlines Logo
7:20 am - 11:40 am
PWM
-
MAN
47h 20m
2 stops
$928Multiple Airlines
Fri, May 8 - Fri, May 15
United Airlines Logo
6:05 am - 10:22 am
MAN
-
PWM
33h 17m
2 stops
United Airlines Logo
6:33 pm - 9:50 am
PWM
-
MAN
34h 17m
2 stops
$1,086United Airlines
Wed, Apr 22 - Sun, Apr 26
Delta Logo
1:00 pm - 1:10 pm
MAN
-
PWM
29h 10m
1 stop
Delta Logo
6:25 am - 10:00 am
PWM
-
MAN
22h 35m
2 stops
$1,143Delta
Fri, May 8 - Fri, May 15
Scandinavian Airlines Logo
9:35 am - 12:43 am
MAN
-
PWM
20h 08m
2 stops
Scandinavian Airlines Logo
6:25 am - 8:55 am
PWM
-
MAN
21h 30m
3 stops
$1,738Scandinavian Airlines
Fri, May 8 - Fri, May 15

United Airlines flights from United Kingdom to Portland, Maine

Our best United Airlines deals on United Kingdom to Portland, Maine flight tickets
United Airlines
Apr 21
LHR7:25 amLondon Heathrow
16h 33m
2 stops
PWM6:58 pmPortland
Apr 28
PWM11:09 amPortland
14h 46m
2 stops
LHR6:55 amLondon Heathrow
$867
United Airlines
Apr 30
LHR12:10 pmLondon Heathrow
16h 19m
2 stops
PWM11:29 pmPortland
May 4
PWM2:08 pmPortland
15h 17m
2 stops
LHR10:25 amLondon Heathrow
$902
United Airlines
Apr 30
LHR1:50 pmLondon Heathrow
14h 39m
2 stops
PWM11:29 pmPortland
May 4
PWM2:08 pmPortland
14h 12m
2 stops
LHR9:20 amLondon Heathrow
$904

JetBlue flights from United Kingdom to Portland, Maine

Our best JetBlue deals on United Kingdom to Portland, Maine flight tickets
JetBlue
May 8
LHR8:15 amLondon Heathrow
19h 48m
1 stop
PWM11:03 pmPortland
May 15
PWM7:20 amPortland
21h 10m
1 stop
LHR9:30 amLondon Heathrow
$666
JetBlue
Apr 21
LHR8:15 amLondon Heathrow
19h 44m
1 stop
PWM10:59 pmPortland
Apr 28
PWM7:30 amPortland
21h 00m
1 stop
LHR9:30 amLondon Heathrow
$687
JetBlue
May 10
LHR8:15 amLondon Heathrow
19h 47m
1 stop
PWM11:02 pmPortland
May 17
PWM7:20 amPortland
21h 10m
1 stop
LHR9:30 amLondon Heathrow
$717

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 March 28, 2026.
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

Cheapest round-trip

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 5/8

8:15 am-11:03 pm

1 stop19h 48m

Portland

Fri 5/15

7:20 am-9:30 am

1 stop21h 10m

$666

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 4/21

8:15 am-10:59 pm

1 stop19h 44m

Portland

Tue 4/28

7:30 am-9:30 am

1 stop21h 00m

$687

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sun 5/10

8:15 am-11:02 pm

1 stop19h 47m

Portland

Sun 5/17

7:20 am-9:30 am

1 stop21h 10m

$717
Quickest round-trip

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 4/21

7:25 am-6:58 pm

2 stops16h 33m

Portland

Tue 4/28

11:09 am-6:55 am

2 stops14h 46m

$867

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 5/4

9:25 pm-11:03 pm

2 stops30h 38m

Portland

Tue 5/26

2:36 pm-11:55 am

2 stops16h 19m

$880

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 5/8

7:50 pm-12:43 am

2 stops33h 53m

Portland

Fri 5/15

2:38 pm-9:20 am

2 stops37h 42m

$891

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Fri 5/8

1:05 pm-11:03 pm

2 stops38h 58m

Portland

Fri 5/15

7:20 am-11:40 am

2 stops47h 20m

$928

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Wed 4/22

6:05 am-10:22 am

2 stops33h 17m

Portland

Sun 4/26

6:33 pm-9:50 am

2 stops34h 17m

$1,086

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Fri 5/8

1:00 pm-1:10 pm

1 stop29h 10m

Portland

Fri 5/15

6:25 am-10:00 am

2 stops22h 35m

$1,143

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Fri 5/8

9:35 am-12:43 am

2 stops20h 08m

Portland

Fri 5/15

6:25 am-8:55 am

3 stops21h 30m

$1,738

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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 $696.

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

13h 04m

Direct flights

None
The fastest flight from United Kingdom to Portland, Maine takes 13h 04m
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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