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Cheap flights from the United Kingdom to Portland, Maine from £372

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/8. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — PWM
16 Jul — 23 Jul1
1 adult

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 11 July 2025.

Round-trip from

£372

Popular in

August

Cheapest in

February

Average price

£768
Icelandair
  • Icelandair
  • 9/8-16/8
  • 3 total stops
  • 60h 42m total
  • United Kingdom to Portland
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (£46 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£13 potential savings vs. average return 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 11 July 2025.

Sat 9/811:55LHR - PWM
1 stop17h 22mIcelandair
Sat 16/806:10PWM - LHR
2 stops43h 20mIcelandair
Deal found 10/7£372
Thu 11/911:55LHR - PWM
1 stop15h 07mJetBlue
Mon 15/914:17PWM - LHR
1 stop14h 13mJetBlue
Deal found 10/7£403
Thu 7/811:30EDI - PWM
1 stop17h 47mJetBlue
Thu 14/814:19PWM - EDI
1 stop13h 56mJetBlue
Deal found 10/7£475
Thu 11/909:55LHR - PWM
2 stops19h 16mDelta
Mon 15/917:00PWM - LHR
2 stops15h 30mDelta
Deal found 10/7£539
Mon 25/808:30LHR - PWM
2 stops15h 59mUnited Airlines
Mon 1/919:26PWM - LHR
1 stop30h 29mUnited Airlines
Deal found 10/7£621
Thu 2/1012:35MAN - PWM
1 stop16h 36mVirgin Atlantic
Mon 6/1005:40PWM - MAN
1 stop21h 55mVirgin Atlantic
Deal found 9/7£624
Thu 2/1012:35MAN - PWM
2 stops28h 20mDelta
Mon 6/1014:35PWM - MAN
2 stops17h 50mDelta
Deal found 11/7£636
Sat 9/809:40LHR - PWM
2 stops17h 26mVirgin Atlantic
Sat 16/806:00PWM - LHR
2 stops19h 25mVirgin Atlantic
Deal found 10/7£649
Mon 25/809:00EDI - PWM
1 stop20h 03mDelta
Mon 1/914:36PWM - EDI
2 stops20h 49mDelta
Deal found 10/7£656
Thu 7/811:20EDI - PWM
2 stops18h 18mVirgin Atlantic
Thu 14/806:00PWM - EDI
1 stop25h 05mVirgin Atlantic
Deal found 10/7£684
Thu 11/914:05LHR - PWM
2 stops13h 58mMultiple Airlines
Mon 15/910:39PWM - LHR
3 stops17h 56mMultiple Airlines
Deal found 11/7£834
Thu 11/908:30LHR - PWM
3 stops19h 33mAir Canada
Mon 15/910:39PWM - LHR
3 stops17h 56mAir Canada
Deal found 11/7£839

Cheapflights Fare Finder

Customise 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 858,174 searches. Data last updated 11 July 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

Sat 9/8

11:55-00:17

1 stop17h 22m

Portland

Sat 16/8

06:10-06:30

2 stops43h 20m

£372

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 11/9

11:55-22:02

1 stop15h 07m

Portland

Mon 15/9

14:17-09:30

1 stop14h 13m

£403

EdinburghPortland

EDI - PWM

EDIPWM

Edinburgh Turnhouse

Thu 7/8

11:30-00:17

1 stop17h 47m

Portland

Thu 14/8

14:19-09:15

1 stop13h 56m

£475

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 11/9

09:55-00:11

2 stops19h 16m

Portland

Mon 15/9

17:00-13:30

2 stops15h 30m

£539

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 25/8

08:30-19:29

2 stops15h 59m

Portland

Mon 1/9

19:26-06:55

1 stop30h 29m

£621

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Thu 2/10

12:35-00:11

1 stop16h 36m

Portland

Mon 6/10

05:40-08:35

1 stop21h 55m

£624

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Thu 2/10

12:35-11:55

2 stops28h 20m

Portland

Mon 6/10

14:35-13:25

2 stops17h 50m

£636

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sat 9/8

09:40-22:06

2 stops17h 26m

Portland

Sat 16/8

06:00-06:25

2 stops19h 25m

£649

EdinburghPortland

EDI - PWM

EDIPWM

Edinburgh Turnhouse

Mon 25/8

09:00-00:03

1 stop20h 03m

Portland

Mon 1/9

14:36-16:25

2 stops20h 49m

£656

EdinburghPortland

EDI - PWM

EDIPWM

Edinburgh Turnhouse

Thu 7/8

11:20-00:38

2 stops18h 18m

Portland

Thu 14/8

06:00-12:05

1 stop25h 05m

£684

Flights are sorted by cheapest return flights first.

Deals found on 8/7

Showing 1-10 of 27 results
1
2
3

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 return 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 time of day to fly from GB to PWM?

Find hourly flight availability from United Kingdom to Portland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 11 July 2025.

When flying from United Kingdom to Portland, Maine, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 11 July 2025.
Get a feel of what it's like to fly with Delta, KLM, andFinnair from the United Kingdom to Portland by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
7,951 reviews
Check prices

Entertainment

7.9

Crew

8.5

Comfort

7.9

Food

7.3

Overall

8.0

Boarding

8.2

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
7,951 reviews
Delta
8.0
Very Good
7,951 reviews
Check prices

Entertainment

7.9

Crew

8.5

Comfort

7.9

Food

7.3

Overall

8.0

Boarding

8.2

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
1,372 reviews
Delta
8.0
Very Good
7,951 reviews
Check prices

Entertainment

7.9

Crew

8.5

Comfort

7.9

Food

7.3

Overall

8.0

Boarding

8.2

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
1,312 reviews
Delta
8.0
Very Good
7,951 reviews
Check prices

Entertainment

7.9

Crew

8.5

Comfort

7.9

Food

7.3

Overall

8.0

Boarding

8.2

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
8,848 reviews
Delta
8.0
Very Good
7,951 reviews
Check prices

Entertainment

7.9

Crew

8.5

Comfort

7.9

Food

7.3

Overall

8.0

Boarding

8.2

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
654 reviews
Delta
8.0
Very Good
7,951 reviews
Check prices

Entertainment

7.9

Crew

8.5

Comfort

7.9

Food

7.3

Overall

8.0

Boarding

8.2

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.

  • What are the cheapest airlines to fly from United Kingdom 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 £595. WestJet flights start at £600 while deals on Scandinavian Airlines start at £786 one-way.

  • What are the most popular routes from United Kingdom to Portland, Maine?

    While some choose either Manchester - Portland or Edinburgh Turnhouse - Portland, London Heathrow - Portland is the most popular route from United Kingdom to Portland, Maine.

  • 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 holiday 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.

See more FAQs

Travelling to a place near the United Kingdom?

Book flights to the United Kingdom if you plan to visit one of these locations
Bath

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Alternative routes for United Kingdom to Portland

See prices for flight routes from nearby airports that may be better suited for you.
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Newcastle upon Tyne to Portland flights

Top 8 airlines flying from United Kingdom to Portland

Discover the top 8 airlines that operate flights from United Kingdom to Portland. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 11 July 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£379Average£584FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
JetBlueCheapest£395Average£596FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
Virgin AtlanticCheapest£464Average£691FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
FinnairCheapest£466Average£587FlexibilityNo cancel feeOn-time76%
Search Finnair flights
KLMCheapest£477Average£761FlexibilityNo cancel feeOn-time75%
Search KLM flights
LufthansaCheapest£506Average£910FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£549Average£818FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Aer LingusCheapest£611Average£882FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

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How does Cheapflights help users find flights from United Kingdom to Portland?

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Why should you use Cheapflights to find cheap flight tickets from United Kingdom to Portland?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from United Kingdom to Portland.

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Yes! Cheapflights helps users easily find flights from United Kingdom to Portland with no change fees.

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Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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