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Cheap flights from the United Kingdom to Portland, Maine from £371

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 12/6. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — PWM
7 Apr — 14 Apr1
1 adult

Cheap 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 2 April 2025.

Round-trip from

£454

One-way from

£371

Popular in

August

Cheapest in

February

Average price

£690
Icelandair
  • Icelandair
  • 1/5-8/5
  • 2 total stops
  • 24h 05m total
  • United Kingdom to Portland
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12/6
  • 12/6
  • 3 total stops
  • 43h 58m total
  • United Kingdom to Portland
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (£57 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£13 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

Find flight deals from United Kingdom to Portland

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 2 April 2025.

Thu 1/508:15LHR - PWM
1 stop11h 10mIcelandair
Thu 8/515:35PWM - LHR
1 stop12h 55mIcelandair
Deal found 1/4£454
Fri 16/513:25LHR - PWM
1 stop14h 20mMultiple Airlines
Fri 23/513:07PWM - LHR
1 stop12h 33mMultiple Airlines
Deal found 1/4£613
Fri 16/509:55LHR - PWM
2 stops19h 19mDelta
Fri 23/514:30PWM - LHR
1 stop14h 30mDelta
Deal found 1/4£615
Fri 16/508:30LHR - PWM
2 stops17h 46mUnited Airlines
Fri 23/514:05PWM - LHR
2 stops14h 15mUnited Airlines
Deal found 1/4£624
Fri 16/512:35MAN - PWM
1 stop16h 24mKLM
Fri 23/514:30PWM - MAN
2 stops12h 50mKLM
Deal found 1/4£690
Fri 16/507:05LHR - PWM
2 stops22h 09mScandinavian Airlines
Fri 23/514:30PWM - LHR
3 stops19h 05mScandinavian Airlines
Deal found 1/4£695
Fri 16/514:15MAN - PWM
1 stop28h 35mDelta
Fri 23/514:30PWM - MAN
1 stop12h 15mDelta
Deal found 1/4£716
Sun 6/711:55LHR - PWM
1 stop16h 42mJetBlue
Sat 12/706:10PWM - LHR
1 stop9h 35mJetBlue
Deal found 31/3£796
Sun 6/717:25LHR - PWM
1 stop35h 34mAir France
Sat 12/717:00PWM - LHR
2 stops34h 50mAir France
Deal found 31/3£816
Fri 11/407:00MAN - PWM
2 stops20h 24mAmerican Airlines
Thu 17/416:16PWM - MAN
2 stops14h 19mAmerican Airlines
Deal found 1/4£964
Fri 16/508:30LHR - PWM
3 stops19h 57mAir Canada
Fri 23/506:10PWM - LHR
3 stops19h 20mAir Canada
Deal found 1/4£1,136
Fri 16/507:40MAN - PWM
3 stops44h 43mMultiple Airlines
Fri 23/511:50PWM - MAN
2 stops18h 40mMultiple Airlines
Deal found 1/4£1,522

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 2 April 2025.
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

Thu 1/5

08:15-14:25

1 stop11h 10m

Portland

Thu 8/5

15:35-09:30

1 stop12h 55m

£454

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 16/5

13:25-22:45

1 stop14h 20m

Portland

Fri 23/5

13:07-06:40

1 stop12h 33m

£613

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 16/5

09:55-00:14

2 stops19h 19m

Portland

Fri 23/5

14:30-10:00

1 stop14h 30m

£615

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 16/5

08:30-21:16

2 stops17h 46m

Portland

Fri 23/5

14:05-10:10

2 stops15h 05m

£624

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Fri 16/5

12:35-23:59

1 stop16h 24m

Portland

Fri 23/5

14:30-08:20

2 stops12h 50m

£690

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 16/5

07:05-00:14

2 stops22h 09m

Portland

Fri 23/5

14:30-14:35

3 stops19h 05m

£695

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Fri 16/5

14:15-13:50

1 stop28h 35m

Portland

Fri 23/5

14:30-07:45

1 stop12h 15m

£716

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sun 6/7

11:55-23:37

1 stop16h 42m

Portland

Sat 12/7

06:10-20:45

1 stop9h 35m

£796

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sun 6/7

17:25-23:59

1 stop35h 34m

Portland

Sat 12/7

17:00-08:50

2 stops34h 50m

£816

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 16/5

08:30-23:27

3 stops19h 57m

Portland

Fri 23/5

06:10-06:30

3 stops19h 20m

£1,136

Flights are sorted by cheapest return flights first.

Deals found on 1/4

Showing 1-10 of 26 results
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2
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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 time of day to fly from GB to PWM?

Find hourly flight availability from United Kingdom to Portland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 2 April 2025.

When flying from United Kingdom to Portland, Maine, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Portland by month

Plan your trip to Portland by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Portland, Maine ranges from 73.0 - 115.0 inches per month. November is typically the wettest month, when rainfall can reach 115.0 mm. August is typically the driest time to visit Portland, Maine when rainfall is around 73.0 mm.

Temperature in Portland by month

Plan your trip to Portland by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Portland, Maine, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 20.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).

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 2 April 2025.
Delta
8.0
Very Good
7,897 reviews
Check prices

Entertainment

7.9

Boarding

8.2

Crew

8.5

Comfort

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very Good
7,897 reviews
Delta
8.0
Very Good
7,897 reviews
Check prices

Entertainment

7.9

Boarding

8.2

Crew

8.5

Comfort

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
KLM
7.8
Good
1,323 reviews
Delta
8.0
Very Good
7,897 reviews
Check prices

Entertainment

7.9

Boarding

8.2

Crew

8.5

Comfort

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Austrian Airlines
7.6
Good
771 reviews
Delta
8.0
Very Good
7,897 reviews
Check prices

Entertainment

7.9

Boarding

8.2

Crew

8.5

Comfort

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Air France
7.4
Good
1,427 reviews
Delta
8.0
Very Good
7,897 reviews
Check prices

Entertainment

7.9

Boarding

8.2

Crew

8.5

Comfort

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,616 reviews
Delta
8.0
Very Good
7,897 reviews
Check prices

Entertainment

7.9

Boarding

8.2

Crew

8.5

Comfort

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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.

  • What are the cheapest airlines to fly from United Kingdom to Portland, Maine one-way?

    To fly one-way, consider booking your trip with WestJet, which is currently one of the cheapest options available, starting at £531. JetBlue flights start at £563 while deals on Austrian Airlines start at £695 one-way.

  • 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.

See more FAQs

Travelling to a place near the United Kingdom?

Book flights to the United Kingdom if you plan to visit one of these locations
Bath

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Alternative routes for United Kingdom to Portland

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from United Kingdom to Portland

Discover the top 5 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 2 April 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest£415Average£632FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
Virgin AtlanticCheapest£488Average£774FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
FinnairCheapest£497Average£664FlexibilityNo cancel feeOn-time76%
Search Finnair flights
KLMCheapest£501Average£809FlexibilityNo cancel feeOn-time75%
Search KLM flights
United AirlinesCheapest£556Average£879FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

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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.

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

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