HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Portland

$785+ 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 5/7. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — PWM
May 25 — Jun 11
Mon 5/25
Mon 6/1
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Heathrow 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.

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 April 25, 2026.

This JetBlue deal was found by Cheapflights users on 4/23. 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.
Thu 5/2811:55 am
LHR
-
PWM
1 stop30h 40m
JetBlue
Thu 6/46:00 am
PWM
-
LHR
1 stop9h 45m
JetBlue
Deal found 4/23$829
This TravelUp deal was found by Cheapflights users on 4/21. 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.
Thu 7/98:15 am
LHR
-
PWM
1 stop20h 59m
JetBlue
Thu 7/166:00 am
PWM
-
LHR
1 stop9h 45m
JetBlue
Deal found 4/21$876
This Cheapflightsfares deal was found by Cheapflights users on 4/20. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/48:15 am
LHR
-
PWM
1 stop20h 43m
JetBlue
Thu 6/116:00 am
PWM
-
LHR
1 stop9h 45m
JetBlue
Deal found 4/20$902
This TravelUp deal was found by Cheapflights users on 4/21. 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.
Fri 6/58:15 am
LHR
-
PWM
1 stop20h 43m
JetBlue
Fri 6/126:00 am
PWM
-
LHR
1 stop9h 45m
JetBlue
Deal found 4/21$941
This KAYAK deal was found by Cheapflights users on 4/24. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/188:15 am
LHR
-
PWM
1 stop19h 48m
JetBlue
Mon 5/256:00 am
PWM
-
LHR
1 stop22h 30m
JetBlue
Deal found 4/24$975
This Expedia deal was found by Cheapflights users on 4/22. 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 6/18:40 am
LHR
-
PWM
2 stops20h 18m
JetBlue
Mon 6/82:37 pm
PWM
-
LHR
1 stop13h 53m
JetBlue
Deal found 4/22$990
This Expedia deal was found by Cheapflights users on 4/23. 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.
Sun 6/217:50 pm
LHR
-
PWM
2 stops45h 40m
Multiple Airlines
Fri 8/78:15 pm
PWM
-
LHR
2 stops43h 45m
Multiple Airlines
Deal found 4/23$1,003
This TravelUp deal was found by Cheapflights users on 4/22. 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.
Mon 6/111:15 am
LHR
-
PWM
1 stop16h 54m
Virgin Atlantic
Mon 6/86:57 pm
PWM
-
LHR
1 stop13h 18m
Virgin Atlantic
Deal found 4/22$1,025
This Delta deal was found by Cheapflights users on 4/22. 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.
Mon 6/18:40 am
LHR
-
PWM
2 stops19h 29m
Delta
Mon 6/84:50 pm
PWM
-
LHR
2 stops15h 25m
Delta
Deal found 4/22$1,046
This Cheapflightsfares deal was found by Cheapflights users on 4/24. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/86:00 am
LHR
-
PWM
2 stops17h 35m
Austrian Airlines
Mon 6/1510:55 am
PWM
-
LHR
1 stop14h 00m
Austrian Airlines
Deal found 4/24$1,051
This The Travel House deal was found by Cheapflights users on 4/25. 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.
Mon 8/247:05 am
LHR
-
PWM
2 stops21h 54m
Scandinavian Airlines
Sat 8/296:30 am
PWM
-
LHR
2 stops22h 05m
Scandinavian Airlines
Deal found 4/25$1,055

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 April 25, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$829
(JetBlue)

One-way from

$786
(Cheapflightsfares)

Popular in

December

Cheapest in

February

Average price

$971
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 ($104 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($58 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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 April 25, 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

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 5/28

11:55 am-1:35 pm

1 stop30h 40m

Portland

Thu 6/4

6:00 am-8:45 pm

1 stop9h 45m

$829

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 5/28

8:40 am-11:09 pm

2 stops19h 29m

Portland

Thu 6/4

6:25 am-6:20 am

1 stop18h 55m

$1,087

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 5/28

6:30 am-11:09 pm

2 stops21h 39m

Portland

Thu 6/4

6:00 am-6:45 am

2 stops19h 45m

$1,087

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 7/9

1:50 pm-11:30 pm

2 stops14h 40m

Portland

Thu 7/16

6:00 am-6:55 am

2 stops19h 55m

$1,101

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 6/5

7:05 am-12:43 am

3 stops22h 38m

Portland

Fri 6/12

6:30 am-9:35 am

2 stops22h 05m

$1,132

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 8/24

7:05 am-11:59 pm

3 stops21h 54m

Portland

Sat 8/29

6:30 am-2:35 pm

2 stops27h 05m

$1,144

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sun 6/21

7:50 pm-12:30 pm

2 stops45h 40m

Portland

Fri 8/7

2:53 pm-8:50 am

1 stop12h 57m

$1,151

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 5/14

8:45 am-11:29 pm

2 stops19h 44m

Portland

Sun 5/17

7:10 pm-8:40 pm

2 stops20h 30m

$1,152
Quickest round-trip

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 6/26

7:45 am-7:27 pm

2 stops16h 42m

Portland

Sun 6/28

7:16 pm-10:40 am

1 stop10h 24m

$1,178

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 6/26

9:55 am-12:52 am

2 stops19h 57m

Portland

Sun 6/28

4:50 pm-12:05 pm

2 stops14h 15m

$1,191

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/25

Showing 1-10 of 15 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 April.
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, February is the cheapest month in which you can book a flight from London Heathrow Airport to Portland, Maine (average of $678). Flying from London Heathrow Airport to Portland, Maine in December is currently the most expensive (average of $1,562). 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 19h 29m. Fly via JetBlue, Delta, or Virgin Atlantic 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, February is the cheapest month in which you can book a flight from London Heathrow Airport to Portland, Maine (average of $678). Flying from London Heathrow Airport to Portland, Maine in December is currently the most expensive (average of $1,562). 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

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 Heathrow to Portland

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to Boston flights
Gatwick to Boston flights
Stansted to Boston flights
Luton to Boston flights
Heathrow to Bangor 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.