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Cheap flights from the United Kingdom to Portland, Maine from £331

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 8/5. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — PWM
19 May — 26 May1
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 19 April 2026.

Thu 14/511:55
LHR
-
PWM
1 stop16h 08m
JetBlue
Fri 22/506:00
PWM
-
LHR
1 stop9h 45m
JetBlue
Deal found 14/4£488
Mon 1/612:10
EDI
-
PWM
1 stop30h 25m
JetBlue
Mon 8/606:00
PWM
-
EDI
1 stop22h 20m
JetBlue
Deal found 17/4£518
Tue 29/911:55
LHR
-
PWM
1 stop16h 57m
JetBlue
Mon 5/1006:00
PWM
-
LHR
1 stop9h 45m
JetBlue
Deal found 15/4£538
Sat 30/508:15
LHR
-
PWM
1 stop20h 43m
JetBlue
Sat 6/614:37
PWM
-
LHR
1 stop13h 53m
JetBlue
Deal found 15/4£544
Tue 29/911:55
LHR
-
PWM
1 stop16h 57m
JetBlue
Wed 7/1006:00
PWM
-
LHR
1 stop9h 45m
JetBlue
Deal found 15/4£552
Thu 1/1011:55
LHR
-
PWM
1 stop16h 57m
JetBlue
Tue 6/1006:00
PWM
-
LHR
1 stop9h 45m
JetBlue
Deal found 15/4£570
Fri 29/508:15
LHR
-
PWM
1 stop20h 43m
JetBlue
Fri 5/614:37
PWM
-
LHR
1 stop13h 53m
JetBlue
Deal found 14/4£575
Tue 29/911:55
LHR
-
PWM
1 stop16h 57m
JetBlue
Thu 8/1006:00
PWM
-
LHR
1 stop9h 45m
JetBlue
Deal found 15/4£580
Thu 1/1011:55
LHR
-
PWM
1 stop16h 57m
JetBlue
Mon 5/1006:00
PWM
-
LHR
1 stop9h 45m
JetBlue
Deal found 15/4£589
Tue 29/911:55
LHR
-
PWM
1 stop16h 57m
JetBlue
Sun 4/1006:00
PWM
-
LHR
1 stop9h 45m
JetBlue
Deal found 15/4£592
Tue 29/911:55
LHR
-
PWM
1 stop16h 57m
JetBlue
Fri 9/1006:00
PWM
-
LHR
1 stop9h 45m
JetBlue
Deal found 15/4£609
Fri 2/1011:55
LHR
-
PWM
1 stop16h 57m
JetBlue
Mon 5/1006:00
PWM
-
LHR
1 stop9h 45m
JetBlue
Deal found 15/4£614

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 19 April 2026.

Round-trip from

£488

One-way from

£331

Popular in

August

Cheapest in

October

Average price

£602
JetBlue
  • JetBlue
  • 14/5-22/5
  • 2 total stops
  • 25h 53m total
  • United Kingdom to Portland
Search Deals
JetBlue
  • JetBlue
  • 8/5
  • 1 total stop
  • 15h 53m total
  • United Kingdom to Portland
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£73 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£16 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 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 19 April 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 14/5

12:10-23:29

2 stops16h 19m

Portland

Mon 18/5

15:39-08:20

1 stop11h 41m

£696

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 4/9

07:25-19:19

2 stops16h 54m

Portland

Tue 8/9

19:35-06:55

1 stop30h 20m

£698

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 29/5

07:05-00:43

2 stops22h 38m

Portland

Fri 5/6

14:38-13:35

2 stops17h 57m

£701

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sat 30/5

10:20-00:43

2 stops19h 23m

Portland

Sat 6/6

08:05-16:25

2 stops27h 20m

£706
Fastest return journey

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 14/5

13:50-23:29

2 stops14h 39m

Portland

Fri 22/5

15:16-07:15

1 stop10h 59m

£720

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 15/5

13:50-23:23

2 stops14h 33m

Portland

Fri 22/5

06:00-06:45

1 stop19h 45m

£726

EdinburghPortland

EDI - PWM

EDIPWM

Edinburgh Turnhouse

Wed 30/9

12:30-14:34

1 stop31h 04m

Portland

Sun 4/10

19:22-08:25

2 stops32h 03m

£773

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 18/5

08:40-00:43

2 stops21h 03m

Portland

Mon 25/5

14:38-10:20

1 stop14h 42m

£775

EdinburghPortland

EDI - PWM

EDIPWM

Edinburgh Turnhouse

Mon 1/6

12:10-13:35

1 stop30h 25m

Portland

Mon 8/6

14:59-10:40

2 stops14h 41m

£779

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 29/5

06:30-23:09

2 stops21h 39m

Portland

Fri 5/6

06:00-06:25

1 stop19h 25m

£830

Flights are sorted by cheapest return flights first.

Deals found on 15/4

Showing 1-10 of 37 resultsSorted by cheapest first
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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, October is the cheapest month in which you can book a flight from United Kingdom to Portland, Maine (average of £120). Flying from United Kingdom to Portland, Maine in January is currently the most expensive (average of £593). 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 19 April 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
7.8
Good
1,501 reviews
Check prices

Crew

8.4

Comfort

7.7

Food

7.3

Entertainment

7.1

Boarding

7.8

Overall

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
KLM
7.8
Good
1,501 reviews
KLM
7.8
Good
1,501 reviews
Check prices

Crew

8.4

Comfort

7.7

Food

7.3

Entertainment

7.1

Boarding

7.8

Overall

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
Finnair
7.7
Good
1,390 reviews
KLM
7.8
Good
1,501 reviews
Check prices

Crew

8.4

Comfort

7.7

Food

7.3

Entertainment

7.1

Boarding

7.8

Overall

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
Virgin Atlantic
7.5
Good
687 reviews
KLM
7.8
Good
1,501 reviews
Check prices

Crew

8.4

Comfort

7.7

Food

7.3

Entertainment

7.1

Boarding

7.8

Overall

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
United Airlines
7.4
Good
9,604 reviews
KLM
7.8
Good
1,501 reviews
Check prices

Crew

8.4

Comfort

7.7

Food

7.3

Entertainment

7.1

Boarding

7.8

Overall

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
JetBlue
7.2
Good
2,946 reviews
KLM
7.8
Good
1,501 reviews
Check prices

Crew

8.4

Comfort

7.7

Food

7.3

Entertainment

7.1

Boarding

7.8

Overall

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas

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 United Airlines, Scandinavian Airlines, and Delta fly from United Kingdom to Portland, Maine in about 16h 19m. The time it takes to get you to your destination can typically vary by up to 6h 19m. 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, October is the cheapest month in which you can book a flight from United Kingdom to Portland, Maine (average of £120). Flying from United Kingdom to Portland, Maine in January is currently the most expensive (average of £593). 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 19 April 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest£539Average£737FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Virgin AtlanticCheapest£561Average£713FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
KLMCheapest£569Average£632FlexibilityNo 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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