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Portland

$552+ Cheap flights from the United Kingdom 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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — PWM
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
1 adult, Economy
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Cheap flight deals from United Kingdom to Portland

Keep the following information in mind while searching for United Kingdom to Portland flight deals. Data was last updated July 31, 2025.

Round-trip from

$552
(TravelUp)

Popular in

August

Cheapest in

February

Average price

$1,010
From United Kingdom to Portland
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($70 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

Find flight deals from United Kingdom to Portland

Cheapest flights from United Kingdom to Portland
Explore the most affordable flight options available from United Kingdom to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2025.

This TravelUp deal was found by Cheapflights users on 7/31. 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 9/158:15 amLHR - PWM
1 stop18h 52mJetBlue
Mon 9/292:17 pmPWM - LHR
1 stop25h 28mJetBlue
Deal found 7/31$552
This The Travel House deal was found by Cheapflights users on 7/31. 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 9/158:15 amLHR - PWM
1 stop18h 52mIcelandair
Mon 9/297:09 amPWM - LHR
2 stops18h 21mIcelandair
Deal found 7/31$608
This Netflights deal was found by Cheapflights users on 7/31. 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.
Mon 9/1512:45 pmLHR - PWM
2 stops16h 26mVirgin Atlantic
Mon 9/296:00 amPWM - LHR
2 stops19h 20mVirgin Atlantic
Deal found 7/31$672
This Delta deal was found by Cheapflights users on 7/31. 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.
Sun 9/148:40 amLHR - PWM
2 stops20h 31mDelta
Sun 9/212:41 pmPWM - LHR
1 stop11h 34mDelta
Deal found 7/31$760
This World Air Fares deal was found by Cheapflights users on 7/30. 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.
Sat 9/138:55 amLHR - PWM
2 stops14h 00mFinnair
Sat 9/201:09 pmPWM - LHR
2 stops13h 41mFinnair
Deal found 7/30$769
This American Airlines deal was found by Cheapflights users on 7/30. 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 8/2610:05 amLHR - PWM
1 stop15h 31mAmerican Airlines
Tue 9/212:08 pmPWM - LHR
1 stop13h 42mAmerican Airlines
Deal found 7/30$785
This United Airlines deal was found by Cheapflights users on 7/30. 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.
Sat 9/137:25 amLHR - PWM
2 stops17h 04mUnited Airlines
Sat 9/2010:05 amPWM - LHR
2 stops15h 15mUnited Airlines
Deal found 7/30$804
This Netflights deal was found by Cheapflights users on 7/31. 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.
Thu 10/212:35 pmMAN - PWM
1 stop16h 36mVirgin Atlantic
Mon 10/61:27 pmPWM - MAN
1 stop14h 08mVirgin Atlantic
Deal found 7/31$827
This American Airlines deal was found by Cheapflights users on 7/31. 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.
Thu 10/27:00 amMAN - PWM
2 stops18h 36mAmerican Airlines
Mon 10/64:15 pmPWM - MAN
2 stops16h 00mAmerican Airlines
Deal found 7/31$851
This Netflights deal was found by Cheapflights users on 7/31. 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.
Thu 10/25:55 amMAN - PWM
2 stops15h 10mKLM
Mon 10/66:00 amPWM - MAN
1 stop21h 35mKLM
Deal found 7/31$879
This FlightHub deal was found by Cheapflights users on 7/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/297:05 amLHR - PWM
2 stops22h 43mScandinavian Airlines
Fri 9/56:31 amPWM - LHR
2 stops22h 04mScandinavian Airlines
Deal found 7/30$918
This United Airlines deal was found by Cheapflights users on 7/31. 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.
Sun 9/1411:50 amMAN - PWM
2 stops31h 36mUnited Airlines
Sun 9/216:23 pmPWM - MAN
2 stops35h 27mUnited Airlines
Deal found 7/31$948

Cheapflights Fare Finder

 
Customize your flight search to find flights from United Kingdom 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 31, 2025.
Use the filters below to find and compare flights from the United Kingdom to Portland that are best for you.

Fly from

United Kingdom

Fly to

Portland

Route

Depart

Return

Price

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 9/15

8:15 am-10:07 pm

1 stop18h 52m

Portland

Mon 9/29

2:17 pm-8:45 pm

1 stop25h 28m

$552

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 9/15

8:15 am-10:07 pm

1 stop18h 52m

Portland

Mon 9/29

7:09 am-6:30 am

2 stops18h 21m

$608

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 9/15

12:45 pm-12:11 am

2 stops16h 26m

Portland

Mon 9/29

6:00 am-6:20 am

2 stops19h 20m

$672

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sun 9/14

8:40 am-12:11 am

2 stops20h 31m

Portland

Sun 9/21

2:41 pm-7:15 am

1 stop11h 34m

$760

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sat 9/13

8:55 am-5:55 pm

2 stops14h 00m

Portland

Sat 9/20

1:09 pm-7:50 am

2 stops13h 41m

$769

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 8/26

10:05 am-8:36 pm

1 stop15h 31m

Portland

Tue 9/2

12:08 pm-6:50 am

1 stop13h 42m

$785

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sat 9/13

7:25 am-7:29 pm

2 stops17h 04m

Portland

Sat 9/20

10:05 am-6:20 am

2 stops15h 15m

$804

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Thu 10/2

12:35 pm-12:11 am

1 stop16h 36m

Portland

Mon 10/6

1:27 pm-8:35 am

1 stop14h 08m

$827

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Thu 10/2

7:00 am-8:36 pm

2 stops18h 36m

Portland

Mon 10/6

4:15 pm-1:15 pm

2 stops16h 00m

$851

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Thu 10/2

5:55 am-4:05 pm

2 stops15h 10m

Portland

Mon 10/6

6:00 am-8:35 am

1 stop21h 35m

$879

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/31

Showing 1-10 of 18 results
1
2

Best time to book a flight from United Kingdom to Portland

Have a flexible travel schedule? Discover the best time to fly to Portland from United Kingdom 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 the United Kingdom to Portland

What is the cheapest month to book a flight from United Kingdom to Portland, Maine?

Currently, January is the cheapest month in which you can book a flight from United Kingdom to Portland, Maine (average of $296). Flying from United Kingdom 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 31, 2025.
Peruse reviews from past customers who have flown with Delta, KLM, and Finnair from the United Kingdom to Portland to help guide your decision. 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
7,981 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Delta
8.0
Very good
7,981 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
KLM
7.8
Good
1,383 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Finnair
7.6
Good
1,316 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
United Airlines
7.4
Good
8,900 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Virgin Atlantic
7.4
Good
655 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.

Related info for your journey

Find useful and relevant information for your journey from United Kingdom 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 United Kingdom?

    If you book a flight to Portland from United Kingdom, you will be flying to Portland, which is the city’s only airport. Portland (PWM) is located 2.9 mi from the center of Portland.

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

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

  • How can I find direct flights from United Kingdom to Portland?

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

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

    Yes. Cheapflights offers flight deals from United Kingdom 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 United Kingdom to Portland, Maine?

    Currently, January is the cheapest month in which you can book a flight from United Kingdom to Portland, Maine (average of $296). Flying from United Kingdom 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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