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Cheap flights from the United Kingdom to Portland, Maine from £419

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 27/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — PWM
18 Mar — 25 Mar1
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 16 February 2026.

Wed 6/511:55
LHR
-
PWM
1 stop16h 41m
JetBlue
Sat 9/506:00
PWM
-
LHR
1 stop9h 45m
JetBlue
Deal found 12/2£562
Sat 14/309:10
LHR
-
PWM
2 stops14h 03m
United Airlines
Sat 21/315:54
PWM
-
LHR
2 stops14h 56m
United Airlines
Deal found 14/2£648
Tue 31/308:15
LHR
-
PWM
1 stop20h 41m
JetBlue
Tue 7/406:00
PWM
-
LHR
1 stop9h 45m
JetBlue
Deal found 14/2£653
Tue 31/307:25
LHR
-
PWM
2 stops16h 33m
United Airlines
Tue 7/416:23
PWM
-
LHR
1 stop14h 22m
United Airlines
Deal found 14/2£684
Wed 10/611:45
LHR
-
PWM
2 stops17h 14m
Multiple Airlines
Wed 8/706:00
PWM
-
LHR
2 stops21h 35m
Multiple Airlines
Deal found 16/2£688
Wed 22/406:05
MAN
-
PWM
2 stops20h 35m
United Airlines
Wed 6/516:45
PWM
-
MAN
2 stops36h 05m
United Airlines
Deal found 15/2£689
Fri 3/408:15
LHR
-
PWM
1 stop20h 41m
JetBlue
Mon 6/406:00
PWM
-
LHR
2 stops19h 30m
JetBlue
Deal found 15/2£696
Wed 10/607:25
LHR
-
PWM
2 stops17h 02m
United Airlines
Wed 8/719:15
PWM
-
LHR
1 stop10h 25m
United Airlines
Deal found 16/2£697
Mon 8/606:50
LHR
-
PWM
2 stops16h 45m
United Airlines
Mon 6/705:20
PWM
-
LHR
1 stop20h 35m
United Airlines
Deal found 16/2£699
Wed 6/511:25
MAN
-
PWM
2 stops17h 34m
United Airlines
Sun 10/519:10
PWM
-
MAN
2 stops41h 00m
United Airlines
Deal found 14/2£707
Wed 6/506:05
MAN
-
PWM
2 stops33h 13m
United Airlines
Wed 20/519:10
PWM
-
MAN
2 stops34h 15m
United Airlines
Deal found 15/2£749
Sat 25/406:05
MAN
-
PWM
2 stops37h 32m
United Airlines
Sat 2/511:34
PWM
-
MAN
2 stops24h 46m
United Airlines
Deal found 13/2£810

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 16 February 2026.

Round-trip from

£562

One-way from

£419

Popular in

August

Cheapest in

October

Average price

£535
JetBlue
  • JetBlue
  • 6/5-9/5
  • 2 total stops
  • 26h 26m total
  • United Kingdom to Portland
Search Deals
Delta
  • Delta
  • 27/4
  • 2 total stops
  • 21h 06m total
  • United Kingdom to Portland
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£68 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 February 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 16 February 2026.
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

Wed 6/5

11:55-23:36

1 stop16h 41m

Portland

Sat 9/5

06:00-20:45

1 stop9h 45m

£562

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sat 14/3

15:10-22:51

1 stop11h 41m

Portland

Sat 21/3

14:32-10:50

1 stop16h 18m

£648

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 31/3

08:15-23:56

1 stop20h 41m

Portland

Tue 7/4

06:00-20:45

1 stop9h 45m

£653

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 31/3

07:25-18:58

2 stops16h 33m

Portland

Tue 7/4

16:23-11:45

1 stop14h 22m

£684

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Wed 22/4

06:05-21:40

2 stops20h 35m

Portland

Wed 6/5

16:45-09:50

2 stops36h 05m

£689

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 8/6

11:55-23:36

1 stop16h 41m

Portland

Thu 9/7

06:00-20:45

1 stop9h 45m

£696

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 8/6

06:50-18:35

2 stops16h 45m

Portland

Tue 7/7

10:00-06:55

1 stop15h 55m

£699

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Wed 6/5

11:25-23:59

2 stops17h 34m

Portland

Sun 10/5

19:10-17:10

2 stops41h 00m

£707

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Wed 6/5

06:05-10:18

2 stops33h 13m

Portland

Wed 20/5

19:10-10:25

2 stops34h 15m

£749

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Sat 25/4

06:05-14:37

2 stops37h 32m

Portland

Sat 2/5

11:34-17:20

2 stops24h 46m

£810

Flights are sorted by cheapest return flights first.

Deals found on 14/2

Showing 1-10 of 25 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 month to book a flight from United Kingdom to Portland, Maine?

Currently, August is the cheapest month in which you can book a flight from United Kingdom to Portland, Maine (average of £89). Flying from United Kingdom to Portland, Maine in December is currently the most expensive (average of £363). 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 16 February 2026.
Get a feel of what it's like to fly with KLM, Finnair, andVirgin Atlantic 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
7.7
Good
1,455 reviews
Check prices

Food

7.3

Boarding

7.8

Crew

8.4

Overall

7.7

Entertainment

7.1

Comfort

7.6

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
KLM
7.7
Good
1,455 reviews
KLM
7.7
Good
1,455 reviews
Check prices

Food

7.3

Boarding

7.8

Crew

8.4

Overall

7.7

Entertainment

7.1

Comfort

7.6

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
Finnair
7.6
Good
1,362 reviews
KLM
7.7
Good
1,455 reviews
Check prices

Food

7.3

Boarding

7.8

Crew

8.4

Overall

7.7

Entertainment

7.1

Comfort

7.6

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
Virgin Atlantic
7.5
Good
678 reviews
KLM
7.7
Good
1,455 reviews
Check prices

Food

7.3

Boarding

7.8

Crew

8.4

Overall

7.7

Entertainment

7.1

Comfort

7.6

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
United Airlines
7.4
Good
9,300 reviews
KLM
7.7
Good
1,455 reviews
Check prices

Food

7.3

Boarding

7.8

Crew

8.4

Overall

7.7

Entertainment

7.1

Comfort

7.6

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
JetBlue
7.2
Good
2,898 reviews
KLM
7.7
Good
1,455 reviews
Check prices

Food

7.3

Boarding

7.8

Crew

8.4

Overall

7.7

Entertainment

7.1

Comfort

7.6

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.

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 and United Airlines fly from United Kingdom to Portland, Maine in about 11h 41m. The time it takes to get you to your destination can typically vary by up to 5h. 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 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, August is the cheapest month in which you can book a flight from United Kingdom to Portland, Maine (average of £89). Flying from United Kingdom to Portland, Maine in December is currently the most expensive (average of £363). 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

Travelling to a place near Portland?

Book flights to Portland if you plan to visit one of these locations
Bath

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Top 7 airlines flying from United Kingdom to Portland

Discover the top 7 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 16 February 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest£141Average£527FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
Virgin AtlanticCheapest£464Average£624FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
IcelandairCheapest£481Average£632FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
KLMCheapest£491Average£688FlexibilityNo cancel feeOn-time75%
Search KLM flights
FinnairCheapest£531Average£641FlexibilityNo cancel feeOn-time76%
Search Finnair flights
United AirlinesCheapest£547Average£723FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Aer LingusCheapest£607Average£878FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus 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.

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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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