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Portland

$624+ Cheap flights from Heathrow (LHR) 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 6/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — PWM
Apr 9 — Apr 161
Thu 4/9
Thu 4/16
1 adult, Economy
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Cheap 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 March 10, 2026.

This Expedia deal was found by Cheapflights users on 3/6. 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.
Mon 4/208:15 am
LHR
-
PWM
1 stop19h 44m
JetBlue
Mon 4/277:30 am
PWM
-
LHR
1 stop21h 00m
JetBlue
Deal found 3/6$681
This JetBlue deal was found by Cheapflights users on 3/5. 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.
Fri 5/111:55 am
LHR
-
PWM
1 stop16h 41m
JetBlue
Tue 5/56:00 am
PWM
-
LHR
1 stop9h 45m
JetBlue
Deal found 3/5$760
This lastminute.com deal was found by Cheapflights users on 3/6. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/207:50 pm
LHR
-
PWM
2 stops33h 56m
Scandinavian Airlines
Mon 4/276:30 am
PWM
-
LHR
2 stops22h 05m
Scandinavian Airlines
Deal found 3/6$801
This United Airlines deal was found by Cheapflights users on 3/6. 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.
Mon 4/207:25 am
LHR
-
PWM
2 stops16h 33m
United Airlines
Mon 4/272:12 pm
PWM
-
LHR
2 stops14h 08m
United Airlines
Deal found 3/6$812
This Kiwi.com deal was found by Cheapflights users on 3/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/239:30 am
LHR
-
PWM
1 stop14h 07m
Austrian Airlines
Thu 4/3011:08 am
PWM
-
LHR
1 stop13h 47m
Austrian Airlines
Deal found 3/9$837
This United Airlines deal was found by Cheapflights users on 3/5. 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.
Fri 5/11:50 pm
LHR
-
PWM
2 stops14h 33m
United Airlines
Tue 5/53:39 pm
PWM
-
LHR
2 stops14h 01m
United Airlines
Deal found 3/5$848

Find 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 March 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$642
(TravelUp)

One-way from

$629
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$841
Provider with most accurate pricing for London Heathrow-Portland flight deals.
Search Deals
Provider most trusted by Cheapflights users for London Heathrow-Portland flights.
Search Deals
From London Heathrow to Portland
Search Deals
One-way flight from London Heathrow to Portland
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($112 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($59 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

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 March 10, 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Portland 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

Fri 5/1

11:55 am-11:36 pm

1 stop16h 41m

Portland

Tue 5/5

6:00 am-8:45 pm

1 stop9h 45m

$760

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 4/20

7:25 am-6:58 pm

2 stops16h 33m

Portland

Mon 4/27

2:12 pm-6:55 am

1 stop11h 43m

$812

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 5/1

1:50 pm-11:23 pm

2 stops14h 33m

Portland

Tue 5/5

3:39 pm-10:40 am

2 stops14h 01m

$848
Cheapest one-way

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 6/4

11:20 am-11:56 pm

2 stops17h 36m

$624

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sun 8/23

8:05 pm-3:59 pm

3 stops48h 54m

$646

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 6/4

5:10 pm-11:56 pm

3 stops35h 46m

$652

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 6/4

11:55 am-1:24 pm

1 stop30h 29m

$661

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sun 8/23

7:50 pm-11:57 pm

2 stops33h 07m

$675

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 6/11

8:50 am-9:12 am

2 stops29h 22m

$689
Quickest one-way

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 6/11

3:15 pm-11:53 pm

1 stop13h 38m

$748

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/10

Showing 1-10 of 14 resultsSorted by cheapest first
1
2

Compare providers for flights from Heathrow to Portland

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Heathrow to Portland in March.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on London Heathrow Airport-Portland, Maine flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on London Heathrow Airport-Portland, Maine flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from London Heathrow Airport-Portland, Maine flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on London Heathrow Airport-Portland, Maine flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for London Heathrow Airport-Portland, Maine flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 $409). Flying from London Heathrow Airport to Portland, Maine in June is currently the most expensive (average of $500). 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.

How much does it cost to fly round-trip from London Heathrow Airport to Portland, Maine?

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 16h 04m. Fly via JetBlue to get the fastest option. The distance between London Heathrow Airport and Portland, Maine is about 3173 mi.

  • 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 $409). Flying from London Heathrow Airport to Portland, Maine in June is currently the most expensive (average of $500). 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
Lewiston
Conway

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Alternative routes for Heathrow to Portland

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