Find flights
When to book
Airlines
FAQs

Cheap flights from the United Kingdom to Portland, Maine from £359

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
14 Jul — 21 Jul1
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 14 June 2026.

Sat 8/812:10
EDI
-
PWM
1 stop29h 07m
JetBlue
Fri 14/814:49
PWM
-
EDI
1 stop13h 31m
JetBlue
Deal found 10/6£526
Wed 8/708:15
LHR
-
PWM
1 stop21h 01m
JetBlue
Mon 13/706:00
PWM
-
LHR
1 stop9h 45m
JetBlue
Deal found 10/6£550
Fri 28/808:15
LHR
-
PWM
1 stop20h 59m
JetBlue
Sun 6/913:17
PWM
-
LHR
1 stop15h 13m
JetBlue
Deal found 9/6£573
Fri 11/912:10
EDI
-
PWM
1 stop16h 42m
JetBlue
Sun 13/906:00
PWM
-
EDI
1 stop22h 20m
JetBlue
Deal found 12/6£579
Sat 29/808:15
LHR
-
PWM
1 stop33h 06m
JetBlue
Wed 2/914:40
PWM
-
LHR
1 stop25h 05m
JetBlue
Deal found 9/6£598
Sun 12/708:15
LHR
-
PWM
1 stop21h 01m
JetBlue
Sun 19/706:00
PWM
-
LHR
1 stop9h 45m
JetBlue
Deal found 13/6£605
Tue 29/911:55
LHR
-
PWM
1 stop16h 57m
JetBlue
Sat 3/1006:00
PWM
-
LHR
1 stop9h 45m
JetBlue
Deal found 11/6£619
Sun 5/708:15
LHR
-
PWM
1 stop21h 10m
JetBlue
Sun 12/706:00
PWM
-
LHR
1 stop22h 30m
JetBlue
Deal found 14/6£633
Sun 9/812:10
EDI
-
PWM
1 stop17h 04m
JetBlue
Fri 14/806:00
PWM
-
EDI
1 stop22h 20m
JetBlue
Deal found 10/6£635
Mon 6/708:15
LHR
-
PWM
1 stop33h 15m
JetBlue
Fri 24/714:40
PWM
-
LHR
1 stop25h 05m
JetBlue
Deal found 9/6£639
Fri 11/912:10
EDI
-
PWM
1 stop16h 42m
Multiple Airlines
Sun 13/906:00
PWM
-
EDI
2 stops21h 30m
Multiple Airlines
Deal found 12/6£666
Wed 9/1206:35
LHR
-
PWM
2 stops17h 49m
United Airlines
Sun 13/1215:15
PWM
-
LHR
1 stop24h 20m
United Airlines
Deal found 9/6£667

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 14 June 2026.

Round-trip from

£526

One-way from

£359

Popular in

July

Cheapest in

February

Average price

£776
JetBlue
  • JetBlue
  • 8/8-14/8
  • 2 total stops
  • 42h 38m 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. 20% potential increase in price (£129 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£15 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 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 14 June 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
Fastest return journey

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 29/9

11:55-23:52

1 stop16h 57m

Portland

Sat 3/10

06:00-20:45

1 stop9h 45m

£619

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 9/12

06:35-19:24

2 stops17h 49m

Portland

Sun 13/12

15:15-20:35

1 stop24h 20m

£667

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 29/9

13:50-23:28

2 stops14h 38m

Portland

Sat 3/10

10:43-05:55

1 stop14h 12m

£684

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 8/7

12:10-23:30

2 stops16h 20m

Portland

Mon 13/7

15:46-07:15

1 stop10h 29m

£712

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sat 29/8

07:25-19:17

2 stops16h 52m

Portland

Wed 2/9

15:47-21:20

1 stop24h 33m

£714

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 28/8

06:50-18:29

2 stops16h 39m

Portland

Sun 6/9

15:47-10:40

2 stops13h 53m

£715

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 21/10

08:15-23:52

1 stop20h 37m

Portland

Thu 29/10

06:30-20:45

1 stop10h 15m

£726

EdinburghPortland

EDI - PWM

EDIPWM

Edinburgh Turnhouse

Wed 9/9

19:10-23:59

2 stops33h 49m

Portland

Sun 13/9

06:30-18:25

2 stops30h 55m

£738

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Thu 5/11

10:10-23:49

2 stops42h 39m

Portland

Mon 9/11

14:35-18:35

2 stops23h 00m

£749

EdinburghPortland

EDI - PWM

EDIPWM

Edinburgh Turnhouse

Wed 9/9

09:40-09:08

1 stop28h 28m

Portland

Sun 13/9

18:53-08:05

1 stop32h 12m

£771

Flights are sorted by cheapest return flights first.

Deals found on 11/6

Showing 1-10 of 34 resultsSorted by cheapest first
1
2
3
4

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, October is the cheapest month in which you can book a flight from United Kingdom to Portland, Maine (average of £121). Flying from United Kingdom to Portland, Maine in June is currently the most expensive (average of £653). 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 14 June 2026.
Get a feel of what it's like to fly with KLM,Virgin Atlantic, andUnited Airlines 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
1,527 reviews
Check prices

Comfort

7.7

Food

7.3

Crew

8.4

Overall

7.8

Boarding

7.8

Entertainment

7.2

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
KLM
7.8
Good
1,527 reviews
KLM
7.8
Good
1,527 reviews
Check prices

Comfort

7.7

Food

7.3

Crew

8.4

Overall

7.8

Boarding

7.8

Entertainment

7.2

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
Virgin Atlantic
7.5
Good
690 reviews
KLM
7.8
Good
1,527 reviews
Check prices

Comfort

7.7

Food

7.3

Crew

8.4

Overall

7.8

Boarding

7.8

Entertainment

7.2

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
United Airlines
7.4
Good
9,820 reviews
KLM
7.8
Good
1,527 reviews
Check prices

Comfort

7.7

Food

7.3

Crew

8.4

Overall

7.8

Boarding

7.8

Entertainment

7.2

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
JetBlue
7.1
Good
2,981 reviews
KLM
7.8
Good
1,527 reviews
Check prices

Comfort

7.7

Food

7.3

Crew

8.4

Overall

7.8

Boarding

7.8

Entertainment

7.2

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

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, United Airlines, and Scandinavian Airlines fly from United Kingdom to Portland, Maine in about 16h 57m. The time it takes to get you to your destination can typically vary by up to 16h 52m. The distance between United Kingdom and Portland, Maine is about 3173 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 Edinburgh Turnhouse - Portland or Manchester - 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, October is the cheapest month in which you can book a flight from United Kingdom to Portland, Maine (average of £121). Flying from United Kingdom to Portland, Maine in June is currently the most expensive (average of £653). 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 3 airlines flying from United Kingdom to Portland

Discover the top 3 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 14 June 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest£544Average£737FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
KLMCheapest£551Average£663FlexibilityNo cancel feeOn-time75%
Search KLM flights
Virgin AtlanticCheapest£566Average£749FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic 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!

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.