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Portland

$634+ 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
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$634
(TravelUp)

Popular in

December

Cheapest in

February

Average price

$947
From London Heathrow to Portland
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($20 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 June 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 June 12, 2025.

This TravelUp deal was found by Cheapflights users on 6/11. 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 8/274:05 pmLHR - PWM
1 stop13h 43mMultiple Airlines
Thu 9/1112:30 pmPWM - LHR
1 stop13h 15mMultiple Airlines
Deal found 6/11$634
This Netflights deal was found by Cheapflights users on 6/11. 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 Netflights is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2710:55 amLHR - PWM
2 stops18h 08mVirgin Atlantic
Thu 9/115:40 amPWM - LHR
2 stops19h 40mVirgin Atlantic
Deal found 6/11$636
This United Airlines deal was found by Cheapflights users on 6/11. 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.
Tue 12/28:45 amLHR - PWM
2 stops19h 32mUnited Airlines
Wed 12/176:00 amPWM - LHR
1 stop10h 20mUnited Airlines
Deal found 6/11$755
This JetBlue deal was found by Cheapflights users on 6/10. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/1611:55 amLHR - PWM
1 stop17h 22mJetBlue
Mon 7/286:05 amPWM - LHR
1 stop9h 40mJetBlue
Deal found 6/10$778
This American Airlines deal was found by Cheapflights users on 6/11. 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.
Tue 12/211:45 amLHR - PWM
2 stops15h 43mAmerican Airlines
Wed 12/171:09 pmPWM - LHR
2 stops11h 46mAmerican Airlines
Deal found 6/11$799
This Delta deal was found by Cheapflights users on 6/11. 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.
Wed 7/99:55 amLHR - PWM
2 stops20h 02mDelta
Wed 7/166:54 pmPWM - LHR
1 stop13h 36mDelta
Deal found 6/11$862
This The Travel House deal was found by Cheapflights users on 6/12. 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 6/1711:55 amLHR - PWM
1 stop30h 28mIcelandair
Sun 10/52:17 pmPWM - LHR
1 stop25h 28mIcelandair
Deal found 6/12$985
This Scandinavian Airlines deal was found by Cheapflights users on 6/11. 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.
Wed 8/277:05 amLHR - PWM
2 stops22h 43mScandinavian Airlines
Thu 9/116:30 amPWM - LHR
3 stops21h 50mScandinavian Airlines
Deal found 6/11$1,140
This oojo deal was found by Cheapflights users on 6/12. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/61:20 pmLHR - PWM
2 stops39h 57mTurkish Airlines
Sat 7/126:05 amPWM - LHR
2 stops22h 45mTurkish Airlines
Deal found 6/12$1,295
This Air Canada deal was found by Cheapflights users on 6/11. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/96:00 amLHR - PWM
3 stops22h 14mAir Canada
Wed 7/167:28 amPWM - LHR
3 stops18h 02mAir Canada
Deal found 6/11$1,737
This Cheapflightsfares deal was found by Cheapflights users on 6/9. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/67:30 pmLHR - PWM
2 stops27h 56mAustrian Airlines
Sat 7/1210:51 amPWM - LHR
1 stop14h 04mAustrian Airlines
Deal found 6/9$2,208

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 June 12, 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

4:05 pm-12:48 am

1 stop13h 43m

Portland

Thu 9/11

12:30 pm-6:45 am

1 stop13h 15m

$634

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 8/27

10:55 am-12:03 am

2 stops18h 08m

Portland

Thu 9/11

5:40 am-6:20 am

2 stops19h 40m

$636

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 12/2

8:45 am-11:17 pm

2 stops19h 32m

Portland

Wed 12/17

6:00 am-9:20 pm

1 stop10h 20m

$755

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 7/16

11:55 am-12:17 am

1 stop17h 22m

Portland

Mon 7/28

6:05 am-8:45 pm

1 stop9h 40m

$778

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 12/2

11:45 am-10:28 pm

2 stops15h 43m

Portland

Wed 12/17

1:09 pm-5:55 am

2 stops11h 46m

$799

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 7/9

9:55 am-12:57 am

2 stops20h 02m

Portland

Wed 7/16

6:54 pm-1:30 pm

1 stop13h 36m

$862

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 8/27

7:05 am-12:48 am

2 stops22h 43m

Portland

Thu 9/11

6:30 am-9:20 am

3 stops21h 50m

$1,140

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 8/14

11:55 am-11:37 pm

1 stop16h 42m

Portland

Sun 8/17

6:10 am-6:30 am

2 stops43h 20m

$1,195

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sun 7/6

1:20 pm-12:17 am

2 stops39h 57m

Portland

Sat 7/12

6:05 am-9:50 am

2 stops22h 45m

$1,295

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 7/9

6:00 am-11:14 pm

3 stops22h 14m

Portland

Wed 7/16

7:28 am-6:30 am

3 stops18h 02m

$1,737

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 18 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.

Rainfall in Portland by month

Plan your trip to Portland by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Portland, Maine ranges from 2.9 - 4.5 inches per month. November is typically the wettest month, when rainfall can reach 4.5 in. August is typically the driest time to visit Portland, Maine when rainfall is around 2.9 in.

Temperature in Portland by month

Plan your trip to Portland by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Portland, Maine, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

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 June 12, 2025.
See what other customers who have flown with Delta, Austrian Airlines and United Airlines from London to Portland have to say. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,950 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Austrian Airlines
7.6
Good
802 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,790 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Virgin Atlantic
7.4
Good
652 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
JetBlue
7.3
Good
2,925 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 $636. Other airlines that can offer you cheap pricing are United Airlines, from $755, and JetBlue, from $778. You may be able to fly from London Heathrow Airport to Portland, Maine for 28% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from London Heathrow Airport to Portland, Maine one-way?

    To fly one-way, consider booking your trip with JetBlue, which is currently one of the cheapest options available, starting at $829. WestJet flights start at $917 while deals on Austrian Airlines start at $968 one-way.

  • 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 London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
North Conway
Bath
Brunswick
Auburn
Conway
Lewiston

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