Find flights
When to book
Airlines
FAQs

Cheap flights from the United Kingdom to Portland, Maine from £346

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 6/5. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — PWM
27 Apr — 4 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 28 March 2026.

Fri 8/508:15
LHR
-
PWM
1 stop19h 48m
JetBlue
Fri 15/507:20
PWM
-
LHR
1 stop21h 10m
JetBlue
Deal found 24/3£502
Tue 21/408:15
LHR
-
PWM
1 stop19h 44m
JetBlue
Tue 28/407:30
PWM
-
LHR
1 stop21h 00m
JetBlue
Deal found 24/3£518
Tue 12/508:15
LHR
-
PWM
1 stop19h 48m
JetBlue
Tue 19/507:20
PWM
-
LHR
1 stop21h 10m
JetBlue
Deal found 28/3£519
Sun 10/508:15
LHR
-
PWM
1 stop19h 47m
JetBlue
Sun 17/507:20
PWM
-
LHR
1 stop21h 10m
JetBlue
Deal found 26/3£541
Thu 8/1011:55
LHR
-
PWM
1 stop15h 12m
JetBlue
Sun 11/1007:09
PWM
-
LHR
1 stop21h 21m
JetBlue
Deal found 26/3£595
Wed 7/1013:45
LHR
-
PWM
1 stop14h 39m
American Airlines
Mon 12/1011:01
PWM
-
LHR
2 stops17h 39m
American Airlines
Deal found 26/3£614
Tue 12/513:05
LHR
-
PWM
2 stops14h 58m
Multiple Airlines
Tue 19/507:20
PWM
-
LHR
2 stops23h 35m
Multiple Airlines
Deal found 28/3£614
Tue 7/411:55
LHR
-
PWM
1 stop17h 03m
JetBlue
Tue 28/407:30
PWM
-
LHR
1 stop32h 15m
JetBlue
Deal found 26/3£623
Tue 1/908:15
LHR
-
PWM
1 stop20h 42m
JetBlue
Sat 5/914:25
PWM
-
LHR
1 stop25h 20m
JetBlue
Deal found 25/3£634
Tue 21/407:25
LHR
-
PWM
2 stops16h 33m
United Airlines
Tue 28/411:09
PWM
-
LHR
2 stops14h 46m
United Airlines
Deal found 24/3£654
Wed 7/1011:55
LHR
-
PWM
1 stop15h 12m
JetBlue
Mon 12/1014:17
PWM
-
LHR
1 stop14h 13m
JetBlue
Deal found 26/3£666
Fri 8/513:05
MAN
-
PWM
2 stops38h 58m
Multiple Airlines
Fri 15/507:20
PWM
-
MAN
2 stops47h 20m
Multiple Airlines
Deal found 24/3£700

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 28 March 2026.

Round-trip from

£502

One-way from

£346

Popular in

August

Cheapest in

October

Average price

£691
JetBlue
  • JetBlue
  • 8/5-15/5
  • 2 total stops
  • 40h 58m total
  • United Kingdom to Portland
Search Deals
JetBlue
  • JetBlue
  • 6/5
  • 1 total stop
  • 19h 48m total
  • United Kingdom to Portland
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£71 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 March 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 28 March 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

Fri 8/5

08:15-23:03

1 stop19h 48m

Portland

Fri 15/5

07:20-09:30

1 stop21h 10m

£502

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 12/5

08:15-23:03

1 stop19h 48m

Portland

Tue 19/5

07:20-09:30

1 stop21h 10m

£519

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sun 10/5

08:15-23:02

1 stop19h 47m

Portland

Sun 17/5

07:20-09:30

1 stop21h 10m

£541

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 12/5

13:05-23:03

2 stops14h 58m

Portland

Tue 19/5

07:20-11:55

2 stops23h 35m

£614

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 1/9

08:15-23:57

1 stop20h 42m

Portland

Sat 5/9

14:25-20:45

1 stop25h 20m

£634

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 21/4

07:25-18:58

2 stops16h 33m

Portland

Tue 28/4

11:09-06:55

2 stops14h 46m

£654

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 30/4

12:10-23:29

2 stops16h 19m

Portland

Mon 4/5

14:08-10:25

2 stops15h 17m

£680

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Fri 8/5

13:05-23:03

2 stops38h 58m

Portland

Fri 15/5

07:20-11:40

2 stops47h 20m

£700

EdinburghPortland

EDI - PWM

EDIPWM

Edinburgh Turnhouse

Thu 24/9

12:30-10:44

1 stop27h 14m

Portland

Mon 28/9

19:22-10:35

1 stop10h 13m

£792
Fastest return journey

Newcastle upon TynePortland

NCL - PWM

NCLPWM

Newcastle upon Tyne

Fri 8/5

13:45-00:43

2 stops15h 58m

Portland

Fri 15/5

14:38-10:35

2 stops14h 57m

£817

Flights are sorted by cheapest return flights first.

Deals found on 25/3

Showing 1-10 of 31 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, August is the cheapest month in which you can book a flight from United Kingdom to Portland, Maine (average of £92). Flying from United Kingdom to Portland, Maine in December is currently the most expensive (average of £374). 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 28 March 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
1,477 reviews
Check prices

Boarding

7.8

Food

7.3

Comfort

7.6

Overall

7.8

Entertainment

7.1

Crew

8.4

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
1,477 reviews
KLM
7.8
Good
1,477 reviews
Check prices

Boarding

7.8

Food

7.3

Comfort

7.6

Overall

7.8

Entertainment

7.1

Crew

8.4

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
1,375 reviews
KLM
7.8
Good
1,477 reviews
Check prices

Boarding

7.8

Food

7.3

Comfort

7.6

Overall

7.8

Entertainment

7.1

Crew

8.4

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
685 reviews
KLM
7.8
Good
1,477 reviews
Check prices

Boarding

7.8

Food

7.3

Comfort

7.6

Overall

7.8

Entertainment

7.1

Crew

8.4

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
9,503 reviews
KLM
7.8
Good
1,477 reviews
Check prices

Boarding

7.8

Food

7.3

Comfort

7.6

Overall

7.8

Entertainment

7.1

Crew

8.4

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
2,909 reviews
KLM
7.8
Good
1,477 reviews
Check prices

Boarding

7.8

Food

7.3

Comfort

7.6

Overall

7.8

Entertainment

7.1

Crew

8.4

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 JetBlue, United Airlines, and Delta fly from United Kingdom to Portland, Maine in about 19h 48m. The time it takes to get you to your destination can typically vary by up to 9h 22m. 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, August is the cheapest month in which you can book a flight from United Kingdom to Portland, Maine (average of £92). Flying from United Kingdom to Portland, Maine in December is currently the most expensive (average of £374). 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

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 4 airlines flying from United Kingdom to Portland

Discover the top 4 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 28 March 2026.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest£477Average£648FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
KLMCheapest£506Average£686FlexibilityNo cancel feeOn-time75%
Search KLM flights
United AirlinesCheapest£550Average£751FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Aer LingusCheapest£626Average£904FlexibilityNo 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.

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.