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Cheap flights from the United Kingdom to Portland from $485

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 9/15. 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

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
11:55 am - 11:52 pm
LHR
-
PWM
16h 57m
1 stop
JetBlue Logo
6:00 am - 8:45 pm
PWM
-
LHR
9h 45m
1 stop
$734JetBlue
Wed, Sep 9 - Sun, Sep 13
JetBlue Logo
11:55 am - 11:52 pm
LHR
-
PWM
16h 57m
1 stop
JetBlue Logo
6:00 am - 8:45 pm
PWM
-
LHR
9h 45m
1 stop
$746JetBlue
Mon, Sep 28 - Mon, Oct 5
JetBlue Logo
8:15 am - 11:52 pm
LHR
-
PWM
20h 37m
1 stop
JetBlue Logo
6:00 am - 8:45 pm
PWM
-
LHR
9h 45m
1 stop
$753JetBlue
Sat, Sep 12 - Wed, Sep 23
JetBlue Logo
11:55 am - 11:52 pm
LHR
-
PWM
16h 57m
1 stop
JetBlue Logo
6:00 am - 8:45 pm
PWM
-
LHR
9h 45m
1 stop
$760JetBlue
Thu, Sep 10 - Mon, Sep 14
Scandinavian Airlines Logo
9:35 am - 12:59 am
MAN
-
PWM
20h 24m
2 stops
Scandinavian Airlines Logo
6:00 am - 12:05 pm
PWM
-
MAN
25h 05m
2 stops
$1,029Scandinavian Airlines
Thu, Aug 20 - Mon, Aug 24
Scandinavian Airlines Logo
9:35 am - 12:59 am
MAN
-
PWM
20h 24m
2 stops
Scandinavian Airlines Logo
2:53 pm - 6:30 pm
PWM
-
MAN
22h 37m
2 stops
$1,040Scandinavian Airlines
Thu, Aug 13 - Thu, Aug 20
United Airlines Logo
6:05 am - 9:08 am
MAN
-
PWM
32h 03m
2 stops
United Airlines Logo
4:57 pm - 10:25 am
PWM
-
MAN
36h 28m
2 stops
$1,100United Airlines
Thu, Sep 17 - Sun, Sep 20
Virgin Atlantic Logo
1:00 pm - 11:30 pm
MAN
-
PWM
15h 30m
1 stop
Virgin Atlantic Logo
6:00 am - 8:15 am
PWM
-
MAN
45h 15m
2 stops
$1,143Virgin Atlantic
Thu, Sep 17 - Sun, Sep 20
Virgin Atlantic Logo
1:00 pm - 11:30 pm
MAN
-
PWM
15h 30m
1 stop
Virgin Atlantic Logo
2:10 pm - 7:15 am
PWM
-
MAN
12h 05m
1 stop
$1,183Virgin Atlantic
Thu, Sep 17 - Sun, Sep 20
Delta Logo
2:55 pm - 11:56 pm
MAN
-
PWM
14h 01m
1 stop
Delta Logo
6:02 am - 8:25 am
PWM
-
MAN
21h 23m
2 stops
$1,217Delta
Fri, Sep 18 - Sun, Sep 20

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JetBlue flights from United Kingdom to Portland, Maine

Our best JetBlue deals on United Kingdom to Portland, Maine flight tickets
JetBlue
Sep 9
LHR11:55 amLondon Heathrow
16h 57m
1 stop
PWM11:52 pmPortland
Sep 13
PWM6:00 amPortland
9h 45m
1 stop
LHR8:45 pmLondon Heathrow
$734
JetBlue
Sep 28
LHR11:55 amLondon Heathrow
16h 57m
1 stop
PWM11:52 pmPortland
Oct 5
PWM6:00 amPortland
9h 45m
1 stop
LHR8:45 pmLondon Heathrow
$746
JetBlue
Sep 12
LHR8:15 amLondon Heathrow
20h 37m
1 stop
PWM11:52 pmPortland
Sep 23
PWM6:00 amPortland
9h 45m
1 stop
LHR8:45 pmLondon Heathrow
$753

United Airlines flights from United Kingdom to Portland, Maine

Our best United Airlines deals on United Kingdom to Portland, Maine flight tickets
United Airlines
Sep 9
LHR7:25 amLondon Heathrow
16h 59m
2 stops
PWM7:24 pmPortland
Sep 13
PWM6:53 pmPortland
20h 47m
1 stop
LHR8:40 pmLondon Heathrow
$892
United Airlines
Sep 9
LHR7:25 amLondon Heathrow
16h 59m
2 stops
PWM7:24 pmPortland
Sep 13
PWM6:53 pmPortland
20h 47m
1 stop
LHR8:40 pmLondon Heathrow
$893
United Airlines
Sep 28
LHR12:10 pmLondon Heathrow
16h 18m
2 stops
PWM11:28 pmPortland
Oct 5
PWM2:32 pmPortland
13h 48m
2 stops
LHR9:20 amLondon Heathrow
$900

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 July 7, 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
Quickest round-trip

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 9/9

11:55 am-11:52 pm

1 stop16h 57m

Portland

Sun 9/13

6:00 am-8:45 pm

1 stop9h 45m

$734

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 9/28

11:55 am-11:52 pm

1 stop16h 57m

Portland

Mon 10/5

6:00 am-8:45 pm

1 stop9h 45m

$746

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sat 9/12

8:15 am-11:52 pm

1 stop20h 37m

Portland

Wed 9/23

6:00 am-8:45 pm

1 stop9h 45m

$753

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 9/10

11:55 am-11:52 pm

1 stop16h 57m

Portland

Mon 9/14

6:00 am-8:45 pm

1 stop9h 45m

$760

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Thu 8/20

9:35 am-12:59 am

2 stops20h 24m

Portland

Mon 8/24

6:00 am-12:05 pm

2 stops25h 05m

$1,029

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Thu 8/13

9:35 am-12:59 am

2 stops20h 24m

Portland

Thu 8/20

2:53 pm-6:30 pm

2 stops22h 37m

$1,040

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Thu 9/17

6:05 am-9:08 am

2 stops32h 03m

Portland

Sun 9/20

4:57 pm-10:25 am

2 stops36h 28m

$1,100

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Thu 9/17

1:00 pm-11:30 pm

1 stop15h 30m

Portland

Sun 9/20

6:00 am-8:15 am

2 stops45h 15m

$1,143

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Thu 9/17

1:00 pm-11:30 pm

1 stop15h 30m

Portland

Sun 9/20

2:10 pm-7:15 am

1 stop12h 05m

$1,183

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Fri 9/18

2:55 pm-11:56 pm

1 stop14h 01m

Portland

Sun 9/20

6:02 am-8:25 am

2 stops21h 23m

$1,217

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 $162, 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 July is also cheap. Prices for this month can be found on momondo for an average of $193.

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

16h 57m

Direct flights

None
The fastest flight from United Kingdom to Portland, Maine takes 16h 57m
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

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

  • 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
Lewiston
Brunswick
Conway
Freeport
Bartlett
Auburn
Gorham
Windham
Bath
Intervale
Oxford
Falmouth
Georgetown
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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