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Portland

$583+ 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 8/27. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — PWM
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
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 July 29, 2025.

Round-trip from

$583
(TravelUp)

Popular in

December

Cheapest in

February

Average price

$1,128
From London Heathrow to Portland
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($25 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($34 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 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 July 29, 2025.

This TravelUp deal was found by Cheapflights users on 7/28. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/278:15 amLHR - PWM
1 stop21h 02mJetBlue
Wed 9/36:05 amPWM - LHR
1 stop9h 40mJetBlue
Deal found 7/28$583
This World Air Fares deal was found by Cheapflights users on 7/28. 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 World Air Fares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/111:20 pmLHR - PWM
2 stops15h 25mFinnair
Thu 9/183:56 pmPWM - LHR
1 stop11h 09mFinnair
Deal found 7/28$690
This American Airlines deal was found by Cheapflights users on 7/26. 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.
Wed 9/107:55 amLHR - PWM
2 stops15h 16mAmerican Airlines
Wed 9/178:02 amPWM - LHR
1 stop17h 38mAmerican Airlines
Deal found 7/26$704
This Trip.com deal was found by Cheapflights users on 7/28. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/258:00 amLHR - PWM
1 stop15h 38mUnited Airlines
Fri 10/316:00 amPWM - LHR
2 stops19h 55mUnited Airlines
Deal found 7/28$721
This Flysmarter deal was found by Cheapflights users on 7/28. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/116:05 pmLHR - PWM
2 stops24h 02mBritish Airways
Thu 9/186:00 amPWM - LHR
1 stop21h 05mBritish Airways
Deal found 7/28$732
This Austrian Airlines deal was found by Cheapflights users on 7/27. 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/107:30 pmLHR - PWM
2 stops27h 56mAustrian Airlines
Wed 9/1710:39 amPWM - LHR
1 stop14h 16mAustrian Airlines
Deal found 7/27$752
This Icelandair deal was found by Cheapflights users on 7/28. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/271:05 pmLHR - PWM
2 stops16h 12mMultiple Airlines
Wed 9/32:17 pmPWM - LHR
2 stops16h 38mMultiple Airlines
Deal found 7/28$833
This The Travel House deal was found by Cheapflights users on 7/29. 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 The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2911:55 amLHR - PWM
1 stop17h 22mIcelandair
Sun 8/316:10 amPWM - LHR
1 stop9h 35mIcelandair
Deal found 7/29$864
This Scandinavian Airlines deal was found by Cheapflights users on 7/28. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/910:20 amLHR - PWM
2 stops19h 30mScandinavian Airlines
Tue 9/166:35 amPWM - LHR
3 stops21h 45mScandinavian Airlines
Deal found 7/28$876
This Mytrip deal was found by Cheapflights users on 7/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/255:40 pmLHR - PWM
2 stops34h 37mAir Canada
Sun 11/25:00 amPWM - LHR
2 stops33h 35mAir Canada
Deal found 7/28$928

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 July 29, 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 8/27

8:15 am-12:17 am

1 stop21h 02m

Portland

Wed 9/3

6:05 am-8:45 pm

1 stop9h 40m

$583

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 9/11

1:20 pm-11:45 pm

2 stops15h 25m

Portland

Thu 9/18

3:56 pm-8:05 am

1 stop11h 09m

$690

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 9/10

7:55 am-6:11 pm

2 stops15h 16m

Portland

Wed 9/17

8:02 am-6:40 am

1 stop17h 38m

$704

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sat 10/25

8:00 am-6:38 pm

1 stop15h 38m

Portland

Fri 10/31

6:00 am-5:55 am

2 stops19h 55m

$721

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 9/11

6:05 pm-1:07 pm

2 stops24h 02m

Portland

Thu 9/18

6:00 am-8:05 am

1 stop21h 05m

$732

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 9/10

7:30 pm-6:26 pm

2 stops27h 56m

Portland

Wed 9/17

10:39 am-5:55 am

1 stop14h 16m

$752

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 8/27

1:05 pm-12:17 am

2 stops16h 12m

Portland

Wed 9/3

2:17 pm-11:55 am

2 stops16h 38m

$833

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 8/29

8:15 am-12:17 am

1 stop21h 02m

Portland

Sun 8/31

6:10 am-8:45 pm

1 stop9h 35m

$856

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 9/9

10:20 am-12:50 am

2 stops19h 30m

Portland

Tue 9/16

6:35 am-9:20 am

3 stops21h 45m

$876

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sat 10/25

5:40 pm-11:17 pm

2 stops34h 37m

Portland

Sun 11/2

5:00 am-7:35 pm

2 stops33h 35m

$928

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 13 results
1
2

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.

Reviews of airlines servicing Portland

Get insights into the airlines that provide service to Portland. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Portland. Reviews last updated July 29, 2025.
Read through reviews of airlines operating flights from London Heathrow Airport to Portland, such as Austrian Airlines, Finnair, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Austrian Airlines
7.6
Good
821 reviews

Crew

8.1

Overall

7.6

Food

6.8

Comfort

7.3

Entertainment

6.8

Boarding

7.6

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
Austrian Airlines
7.6
Good
821 reviews
Austrian Airlines
7.6
Good
821 reviews

Crew

8.1

Overall

7.6

Food

6.8

Comfort

7.3

Entertainment

6.8

Boarding

7.6

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
Finnair
7.6
Good
1,316 reviews
Austrian Airlines
7.6
Good
821 reviews

Crew

8.1

Overall

7.6

Food

6.8

Comfort

7.3

Entertainment

6.8

Boarding

7.6

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
United Airlines
7.4
Good
8,896 reviews
Austrian Airlines
7.6
Good
821 reviews

Crew

8.1

Overall

7.6

Food

6.8

Comfort

7.3

Entertainment

6.8

Boarding

7.6

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
Virgin Atlantic
7.4
Good
655 reviews
Austrian Airlines
7.6
Good
821 reviews

Crew

8.1

Overall

7.6

Food

6.8

Comfort

7.3

Entertainment

6.8

Boarding

7.6

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
Scandinavian Airlines
7.3
Good
1,449 reviews
Austrian Airlines
7.6
Good
821 reviews

Crew

8.1

Overall

7.6

Food

6.8

Comfort

7.3

Entertainment

6.8

Boarding

7.6

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time

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.

  • What are the cheapest airlines flying from London Heathrow Airport to Portland, Maine round-trip?

    Cheapflights users have booked flights from London Heathrow Airport to Portland, Maine round-trip from $583. Other airlines that can offer you cheap pricing are Finnair, from $690, and American Airlines, from $704. You may be able to fly from London Heathrow Airport to Portland, Maine for 34% less than the average price by searching for these airlines.

  • 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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