HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Portland

$608+ Cheap flights from the United Kingdom to Portland, ME (PWM)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — PWM
Nov 28 — Dec 51
Fri 11/28
Fri 12/5
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from United Kingdom to Portland with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Find flight deals from United Kingdom to Portland

Cheapest flights from United Kingdom to Portland
Explore the most affordable flight options available from United Kingdom to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 29, 2025.

This Expedia deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1110:45 amLHR - PWM
1 stop16h 38mVirgin Atlantic
Thu 12/186:08 amPWM - LHR
2 stops19h 37mVirgin Atlantic
Deal found 10/27$870
This Expedia deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1111:45 amLHR - PWM
2 stops17h 14mMultiple Airlines
Thu 12/186:08 amPWM - LHR
2 stops19h 37mMultiple Airlines
Deal found 10/27$879
This Delta deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/118:40 amLHR - PWM
2 stops20h 19mDelta
Thu 12/182:34 pmPWM - LHR
2 stops14h 56mDelta
Deal found 10/27$925
This American Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/117:50 amLHR - PWM
2 stops15h 25mAmerican Airlines
Thu 12/1812:37 pmPWM - LHR
2 stops14h 28mAmerican Airlines
Deal found 10/28$1,010
This United Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/151:00 pmMAN - PWM
2 stops26h 04mUnited Airlines
Sun 11/307:22 pmPWM - MAN
2 stops35h 58mUnited Airlines
Deal found 10/28$1,086
This The Travel House deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/284:35 pmLHR - PWM
1 stop11h 30mAir France
Tue 11/112:30 pmPWM - LHR
1 stop12h 35mAir France
Deal found 10/27$1,111
This Trip.com deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/1310:45 amLHR - PWM
1 stop16h 38mVirgin Atlantic
Sat 12/205:45 amPWM - LHR
1 stop21h 05mVirgin Atlantic
Deal found 10/29$1,115
This Delta deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/138:40 amLHR - PWM
2 stops20h 19mDelta
Sat 12/201:03 pmPWM - LHR
1 stop12h 17mDelta
Deal found 10/29$1,196
This United Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/116:00 amMAN - PWM
2 stops37h 19mUnited Airlines
Thu 12/185:30 amPWM - MAN
2 stops23h 50mUnited Airlines
Deal found 10/27$1,517

Cheap flight deals from United Kingdom to Portland

Keep the following information in mind while searching for United Kingdom to Portland flight deals. Data was last updated October 29, 2025.

Round-trip from

$870
(Expedia)

One-way from

$608
(Kiwi.com)

Popular in

October

Cheapest in

September

Average price

$1,126
From United Kingdom to Portland
Search Deals
One-way flight from United Kingdom to Portland
Search Deals
High demand for flights, 1% potential price rise
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from United Kingdom to Portland 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, Cheapflights users made 2,558,603 searches. Data last updated October 29, 2025.
Use the filters below to find and compare flights from the United Kingdom to Portland that are best for you.

Fly from

United Kingdom

Fly to

Portland

Route

Depart

Return

Price

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 12/11

11:45 am-11:59 pm

2 stops17h 14m

Portland

Thu 12/18

6:08 am-6:45 am

2 stops19h 37m

$879

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 12/11

10:45 am-10:23 pm

1 stop16h 38m

Portland

Thu 12/18

6:08 am-6:25 am

1 stop19h 17m

$891

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 12/11

8:40 am-11:59 pm

2 stops20h 19m

Portland

Thu 12/18

2:34 pm-10:30 am

2 stops14h 56m

$925

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 12/11

7:50 am-6:15 pm

2 stops15h 25m

Portland

Thu 12/18

12:37 pm-8:05 am

2 stops14h 28m

$1,010

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Sat 11/15

1:00 pm-10:04 am

2 stops26h 04m

Portland

Sun 11/30

7:22 pm-12:20 pm

2 stops35h 58m

$1,086

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sat 12/13

10:45 am-10:23 pm

1 stop16h 38m

Portland

Sat 12/20

5:45 am-7:50 am

1 stop21h 05m

$1,115

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sat 3/28

9:10 am-6:13 pm

1 stop13h 03m

Portland

Tue 3/31

11:17 am-5:55 am

1 stop13h 38m

$1,175

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sat 3/28

10:25 am-11:11 pm

2 stops16h 46m

Portland

Tue 3/31

7:22 pm-11:10 am

1 stop10h 48m

$1,175

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Fri 3/27

6:00 am-10:30 pm

2 stops20h 30m

Portland

Tue 3/31

4:11 pm-9:45 am

2 stops12h 34m

$1,329

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Fri 3/27

1:40 pm-11:49 pm

2 stops14h 09m

Portland

Tue 3/31

2:35 pm-8:24 am

1 stop12h 49m

$1,364

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/27

Showing 1-10 of 15 results
1
2

Best time to book a flight from United Kingdom to Portland

Have a flexible travel schedule? Discover the best time to fly to Portland from United Kingdom with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from the United Kingdom to Portland

What is the cheapest month to book a flight from United Kingdom to Portland, Maine?

Currently, June is the cheapest month in which you can book a flight from United Kingdom to Portland, Maine (average of $146). Flying from United Kingdom to Portland, Maine in February is currently the most expensive (average of $424). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from United Kingdom to Portland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Portland from United Kingdom?

    If you book a flight to Portland from United Kingdom, you will be flying to Portland, which is the city’s only airport. Portland (PWM) is located 2.9 mi from the center of Portland.

  • How long is the flight from United Kingdom to Portland, Maine?

    Departing from United Kingdom to Portland, Maine will take you 16h 38m. The distance from United Kingdom to Portland, Maine is about 3173 mi. This flight may include one or multiple stops.

  • Can I find deals for flights from United Kingdom to Portland that include hotel bookings?

    Yes. In addition to deals on United Kingdom to Portland flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from United Kingdom to Portland?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from United Kingdom to Portland.

  • Can I find deals for business class flights from United Kingdom to Portland?

    Yes. Cheapflights offers flight deals from United Kingdom to Portland by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from United Kingdom to Portland, Maine?

    Currently, June is the cheapest month in which you can book a flight from United Kingdom to Portland, Maine (average of $146). Flying from United Kingdom to Portland, Maine in February is currently the most expensive (average of $424). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Portland?

Book flights to Portland if you plan to visit one of these locations
North Conway
Brunswick
Auburn
Conway

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for United Kingdom to Portland

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to Boston flights
Charles de Gaulle to Boston flights
Gatwick to Boston flights
London City to Boston flights
Frankfurt to Boston flights
Madrid to Boston flights
Orly to Boston flights
Stansted to Boston flights
Luton to Boston flights
Barcelona-El Prat to Boston flights
Zurich to Boston flights
Beauvais-Tille to Boston flights
Amsterdam to Boston flights
Dublin to Boston flights
Lisbon to Boston flights
Vienna to Boston flights
Munich to Boston flights
Leonardo da Vinci/Fiumicino to Boston flights
Athens to Boston flights
Copenhagen to Boston flights
Istanbul to Boston flights
Malpensa to Boston flights
Frederic Chopin to Boston flights
Berlin to Boston flights
Manchester to Boston flights
Bergamo to Boston flights
Edinburgh to Boston flights
Porto to Boston flights
Bruxelles-National to Boston flights
Ponta Delgada to Boston flights
Oslo Gardermoen to Boston flights
Basel to Boston flights
Geneva to Boston flights
Prague to Boston flights
Vicenza to Boston flights
Duesseldorf Intl to Boston flights
Lyon to Boston flights
Linate to Boston flights
Modlin to Boston flights
Sabiha Gokcen to Boston flights
Tirana to Boston flights
Hamburg to Boston flights
Charleroi Brussels to Boston flights
Florence to Boston flights
Marseille to Boston flights
Otopeni Intl to Boston flights
Glasgow Intl to Boston flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.