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Cheap flights from the United Kingdom to Portland, Maine from £336

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 2/10. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — PWM
25 Aug — 1 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from United Kingdom to Portland

Enter your travel dates to find the best prices.

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 26 July 2026.

Thu 3/911:55
LHR
-
PWM
1 stop17h 30m
JetBlue
Thu 17/906:00
PWM
-
LHR
1 stop9h 45m
JetBlue
Deal found 24/7£488
Fri 4/908:15
LHR
-
PWM
1 stop21h 10m
JetBlue
Wed 16/906:00
PWM
-
LHR
1 stop9h 45m
JetBlue
Deal found 23/7£489
Thu 3/908:15
LHR
-
PWM
1 stop21h 10m
JetBlue
Thu 10/906:00
PWM
-
LHR
1 stop9h 45m
JetBlue
Deal found 26/7£506
Thu 3/911:55
LHR
-
PWM
1 stop17h 30m
JetBlue
Wed 9/906:00
PWM
-
LHR
1 stop9h 45m
JetBlue
Deal found 23/7£516
Mon 2/1107:25
LHR
-
PWM
1 stop21h 18m
JetBlue
Sun 15/1106:30
PWM
-
LHR
1 stop22h 00m
JetBlue
Deal found 23/7£524
Thu 3/907:05
LHR
-
PWM
2 stops22h 54m
Scandinavian Airlines
Wed 9/906:02
PWM
-
LHR
2 stops22h 33m
Scandinavian Airlines
Deal found 22/7£547
Wed 9/912:10
EDI
-
PWM
1 stop16h 44m
JetBlue
Wed 16/906:00
PWM
-
EDI
1 stop22h 20m
JetBlue
Deal found 25/7£559
Wed 9/919:10
EDI
-
PWM
2 stops33h 46m
Scandinavian Airlines
Wed 16/906:02
PWM
-
EDI
2 stops31h 23m
Scandinavian Airlines
Deal found 25/7£560
Tue 27/1012:20
LHR
-
PWM
1 stop15h 23m
JetBlue
Thu 5/1106:30
PWM
-
LHR
1 stop22h 00m
JetBlue
Deal found 22/7£563
Sat 29/808:15
LHR
-
PWM
1 stop33h 15m
JetBlue
Wed 2/914:40
PWM
-
LHR
1 stop25h 05m
JetBlue
Deal found 22/7£578
Fri 18/920:25
MAN
-
PWM
2 stops32h 31m
Scandinavian Airlines
Sun 20/906:02
PWM
-
MAN
2 stops32h 43m
Scandinavian Airlines
Deal found 26/7£581
Wed 9/911:55
LHR
-
PWM
1 stop16h 59m
JetBlue
Fri 11/906:00
PWM
-
LHR
1 stop9h 45m
JetBlue
Deal found 24/7£594

Find 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 26 July 2026.

Round-trip from

£488

One-way from

£336

Popular in

July

Cheapest in

February

Average price

£1,153
JetBlue
  • JetBlue
  • 3/9-17/9
  • 2 total stops
  • 27h 15m total
  • United Kingdom to Portland
Search Deals
2/10
  • 2/10
  • 2 total stops
  • 31h 38m total
  • United Kingdom to Portland
Search Deals
Highest demand for flights based on searches. 23% potential increase in price (£165 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£29 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

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 26 July 2026.
Use the filters below to find and compare flights from the United Kingdom to Portland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 3/9

08:15-00:25

1 stop21h 10m

Portland

Thu 10/9

06:00-20:45

1 stop9h 45m

£506

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 3/9

08:15-00:25

1 stop21h 10m

Portland

Wed 9/9

06:00-09:30

1 stop22h 30m

£539

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Fri 18/9

20:25-23:56

2 stops32h 31m

Portland

Sun 20/9

06:02-19:45

2 stops32h 43m

£581

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 9/9

11:55-23:54

1 stop16h 59m

Portland

Fri 11/9

06:00-20:45

1 stop9h 45m

£594

EdinburghPortland

EDI - PWM

EDIPWM

Edinburgh Turnhouse

Tue 22/9

19:10-23:56

2 stops33h 46m

Portland

Tue 29/9

06:02-18:25

2 stops31h 23m

£597

EdinburghPortland

EDI - PWM

EDIPWM

Edinburgh Turnhouse

Fri 11/9

12:10-23:54

1 stop16h 44m

Portland

Fri 18/9

06:00-09:20

1 stop22h 20m

£620

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 3/9

08:15-00:25

1 stop21h 10m

Portland

Thu 10/9

16:45-07:55

2 stops34h 10m

£626

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 4/9

17:30-00:59

2 stops36h 29m

Portland

Wed 16/9

06:02-09:35

2 stops22h 33m

£665

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 2/11

09:00-23:59

2 stops19h 59m

Portland

Sun 15/11

19:20-20:35

2 stops20h 15m

£717

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 8/9

07:25-19:24

2 stops16h 59m

Portland

Tue 15/9

06:06-21:25

1 stop10h 19m

£718

Flights are sorted by cheapest return flights first.

Deals found on 23/7

Showing 1-10 of 32 resultsSorted by cheapest first
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3
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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 month to book a flight from United Kingdom to Portland, Maine?

Currently, February is the cheapest month in which you can book a flight from United Kingdom to Portland, Maine (average of £504). Flying from United Kingdom to Portland, Maine in July is currently the most expensive (average of £1,003). 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 26 July 2026.
Get a feel of what it's like to fly with KLM,United Airlines, andJetBlue 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.
KLM
7.8
Good
1,550 reviews
Check prices

Crew

8.4

Food

7.3

Entertainment

7.2

Overall

7.8

Boarding

7.8

Comfort

7.7

Reviews

1 / 20
4.0
Okay

Subhash,Jul 2026

CDG - ATL

The priority tag for bags were taken out. 1 bag is missing. Food was worst for AVML. The food was dry and burnt.
KLM
7.8
Good
1,550 reviews
KLM
7.8
Good
1,550 reviews
Check prices

Crew

8.4

Food

7.3

Entertainment

7.2

Overall

7.8

Boarding

7.8

Comfort

7.7

Reviews

1 / 20
4.0
Okay

Subhash,Jul 2026

CDG - ATL

The priority tag for bags were taken out. 1 bag is missing. Food was worst for AVML. The food was dry and burnt.
United Airlines
7.4
Good
10,041 reviews
KLM
7.8
Good
1,550 reviews
Check prices

Crew

8.4

Food

7.3

Entertainment

7.2

Overall

7.8

Boarding

7.8

Comfort

7.7

Reviews

1 / 20
4.0
Okay

Subhash,Jul 2026

CDG - ATL

The priority tag for bags were taken out. 1 bag is missing. Food was worst for AVML. The food was dry and burnt.
JetBlue
7.1
Good
3,026 reviews
KLM
7.8
Good
1,550 reviews
Check prices

Crew

8.4

Food

7.3

Entertainment

7.2

Overall

7.8

Boarding

7.8

Comfort

7.7

Reviews

1 / 20
4.0
Okay

Subhash,Jul 2026

CDG - ATL

The priority tag for bags were taken out. 1 bag is missing. Food was worst for AVML. The food was dry and burnt.

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.

  • How long is the flight from United Kingdom to Portland, Maine?

    Airlines like JetBlue, Scandinavian Airlines, and United Airlines fly from United Kingdom to Portland, Maine in about 16h 49m. The time it takes to get you to your destination can typically vary by up to 15h 42m. The distance between United Kingdom and Portland, Maine is about 3061 mi. This flight may include one or multiple stops.

  • 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.

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

    Currently, February is the cheapest month in which you can book a flight from United Kingdom to Portland, Maine (average of £504). Flying from United Kingdom to Portland, Maine in July is currently the most expensive (average of £1,003). 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

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.

Top 2 airlines flying from United Kingdom to Portland

Discover the top 2 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 26 July 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest£547Average£742FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
KLMCheapest£555Average£667FlexibilityNo cancel feeOn-time75%
Search KLM flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from United Kingdom to Portland. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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.

Can Cheapflights find flights from United Kingdom to Portland with no change fees?

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

Can Cheapflights notify me if prices for flights from United Kingdom to Portland become cheaper?

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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