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$588+ Cheap flights from Heathrow (LHR) to Portland, ME (PWM)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/15. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — PWM
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Heathrow to Portland

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Portland (PWM). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 11, 2025.

Round-trip from

$588
(TravelUp)

Popular in

December

Cheapest in

February

Average price

$730
From London Heathrow to Portland
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($32 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($36 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
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Find flight deals from Heathrow to Portland

Cheapest flights from Heathrow to Portland
Explore the most affordable flight options available from Heathrow to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This TravelUp deal was found by Cheapflights users on 9/10. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/158:15 amLHR - PWM
1 stop19h 49mJetBlue
Wed 10/227:09 amPWM - LHR
1 stop21h 21mJetBlue
Deal found 9/10$588
This The Travel House deal was found by Cheapflights users on 9/10. 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.
Wed 10/158:15 amLHR - PWM
1 stop19h 49mIcelandair
Wed 10/227:09 amPWM - LHR
2 stops42h 21mIcelandair
Deal found 9/10$634
This JetBlue deal was found by Cheapflights users on 9/9. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/811:55 amLHR - PWM
1 stop16h 09mJetBlue
Wed 10/152:17 pmPWM - LHR
1 stop14h 13mJetBlue
Deal found 9/9$658
This The Travel House deal was found by Cheapflights users on 9/10. 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.
Fri 10/108:25 amLHR - PWM
2 stops43h 39mIcelandair
Fri 10/177:09 amPWM - LHR
1 stop21h 21mIcelandair
Deal found 9/10$707
This United Airlines deal was found by Cheapflights users on 9/9. 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.
Wed 10/87:30 amLHR - PWM
2 stops15h 53mUnited Airlines
Wed 10/153:45 pmPWM - LHR
2 stops13h 55mUnited Airlines
Deal found 9/9$745
This Flighttix deal was found by Cheapflights users on 9/10. 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/153:15 pmLHR - PWM
1 stop36h 04mVirgin Atlantic
Wed 10/221:27 pmPWM - LHR
1 stop12h 18mVirgin Atlantic
Deal found 9/10$777
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Wed 10/157:45 amLHR - PWM
2 stops13h 59mUnited Airlines
Wed 10/225:41 pmPWM - LHR
1 stop10h 39mUnited Airlines
Deal found 9/10$836
This TravelUp deal was found by Cheapflights users on 9/10. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/259:40 amLHR - PWM
2 stops17h 39mVirgin Atlantic
Sat 11/11:27 pmPWM - LHR
2 stops17h 23mVirgin Atlantic
Deal found 9/10$919
This Flightnetwork deal was found by Cheapflights users on 9/10. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/159:30 amLHR - PWM
2 stops18h 43mAir Canada
Wed 10/228:00 amPWM - LHR
2 stops17h 35mAir Canada
Deal found 9/10$970

Cheapflights Fare Finder

 
Customize your flight search to find flights from Heathrow 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 September 11, 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Portland that are best for you.

Fly from

Heathrow

Fly to

Portland

Route

Depart

Return

Price

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 10/15

8:15 am-11:04 pm

1 stop19h 49m

Portland

Wed 10/22

7:09 am-9:30 am

1 stop21h 21m

$588

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 10/8

11:55 am-11:04 pm

1 stop16h 09m

Portland

Wed 10/15

2:17 pm-9:30 am

1 stop14h 13m

$658

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 10/10

8:25 am-11:04 pm

2 stops43h 39m

Portland

Fri 10/17

7:09 am-9:30 am

1 stop21h 21m

$707

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 10/8

7:30 am-6:23 pm

2 stops15h 53m

Portland

Wed 10/15

3:45 pm-9:20 am

1 stop12h 35m

$745

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 10/15

3:15 pm-10:19 pm

1 stop36h 04m

Portland

Wed 10/22

1:27 pm-6:45 am

1 stop12h 18m

$777

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 10/15

7:45 am-4:44 pm

2 stops13h 59m

Portland

Wed 10/22

5:41 pm-9:20 am

1 stop10h 39m

$836

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sat 10/25

9:40 am-10:19 pm

2 stops17h 39m

Portland

Sat 11/1

1:27 pm-10:50 am

2 stops17h 23m

$919

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 10/15

7:05 am-12:05 am

3 stops22h 00m

Portland

Wed 10/22

6:50 am-9:35 am

2 stops21h 45m

$1,104

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sun 9/28

8:15 am-10:07 pm

1 stop18h 52m

$770

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sun 9/28

8:25 am-1:22 pm

2 stops33h 57m

$785

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 15 results
1
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Best time to book a flight from Heathrow to Portland

Have a flexible travel schedule? Discover the best time to fly to Portland from Heathrow 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 London Heathrow Airport to Portland

What is the cheapest month to book a flight from London Heathrow Airport to Portland, Maine?

Currently, January is the cheapest month in which you can book a flight from London Heathrow Airport to Portland, Maine (average of $296). Flying from London Heathrow Airport to Portland, Maine in July is currently the most expensive (average of $394). 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 Heathrow 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 London Heathrow?

    Located just 2.9 mi from the city center, Portland is the airport most travelers will use when flying to Portland from London Heathrow. Booking flights from London Heathrow to Portland (PWM) should be relatively easy as there are 0 daily inbound flights from London Heathrow from 0 different airlines.

  • How long is the flight from London Heathrow Airport to Portland, Maine?

    There are many flights that can get you from London Heathrow Airport to Portland, Maine in 15h 53m. Fly via JetBlue, Icelandair, or United Airlines to get the fastest option. The distance between London Heathrow Airport and Portland, Maine is about 3173 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

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

  • How can I find direct flights from Heathrow to Portland?

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

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

    Yes. Cheapflights offers flight deals from Heathrow 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 London Heathrow Airport to Portland, Maine?

    Currently, January is the cheapest month in which you can book a flight from London Heathrow Airport to Portland, Maine (average of $296). Flying from London Heathrow Airport to Portland, Maine in July is currently the most expensive (average of $394). 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
Brunswick
North Conway
Auburn
Conway
Lewiston

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Alternative routes for Heathrow to Portland

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