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Cheap flights from London to Portland, Maine from £475

This is the cheapest retur 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.
LON — PWM
30 Mar — 6 Apr1
1 adult

Cheapflights Tip: The best prices from London to Portland are usually found in May or February, booked 63 days in advance, depart on a Monday or Thursday and return on a Monday

Cheap flight deals from London to Portland

Discover tips and strategies to find the most affordable flight options for your journey from London (LON) to Portland (PWM). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 25 March 2025.

Round-trip from

£475

Popular in

August

Cheapest in

May

Average price

£676
JetBlue
  • JetBlue
  • 8/5-15/5
  • 2 total stops
  • 24h 20m total
  • London to Portland
Highest demand for flights based on searches. 8% potential increase in price (£51 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (£12 potential savings vs. average return price).
Average for round-trip flights in March 2025

Find flight deals from London to Portland

Cheapest flights from London to Portland
Explore the most affordable flight options available from London to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 25 March 2025.

Thu 8/508:15LHR - PWM
1 stop11h 25mJetBlue
Thu 15/515:35PWM - LHR
1 stop12h 55mJetBlue
Deal found 23/3£475
Fri 9/508:15LHR - PWM
1 stop11h 25mIcelandair
Mon 19/507:12PWM - LHR
1 stop21h 18mIcelandair
Deal found 24/3£494
Fri 9/506:30LHR - PWM
2 stops22h 29mVirgin Atlantic
Mon 19/505:30PWM - LHR
1 stop20h 15mVirgin Atlantic
Deal found 24/3£559
Thu 11/908:55LHR - PWM
2 stops13h 01mFinnair
Tue 23/916:18PWM - LHR
2 stops12h 12mFinnair
Deal found 24/3£581
Thu 8/511:45LHR - PWM
2 stops17h 29mDelta
Thu 15/513:30PWM - LHR
2 stops15h 45mDelta
Deal found 23/3£584
Wed 27/809:00LHR - PWM
2 stops19h 59mMultiple Airlines
Sun 14/918:55PWM - LHR
2 stops44h 05mMultiple Airlines
Deal found 24/3£609
Thu 24/416:05LHR - PWM
1 stop13h 37mKLM
Sun 27/414:59PWM - LHR
1 stop14h 16mKLM
Deal found 24/3£620
Fri 9/507:05LHR - PWM
3 stops22h 09mScandinavian Airlines
Mon 19/506:35PWM - LHR
2 stops22h 00mScandinavian Airlines
Deal found 24/3£693
Mon 12/522:25LHR - PWM
2 stops29h 35mTurkish Airlines
Fri 16/507:12PWM - LHR
2 stops21h 38mTurkish Airlines
Deal found 24/3£886
Wed 2/709:30LHR - PWM
1 stop13h 56mAustrian Airlines
Wed 16/710:51PWM - LHR
1 stop15h 24mAustrian Airlines
Deal found 25/3£1,252
Wed 2/709:30LHR - PWM
2 stops14h 57mUnited Airlines
Tue 15/714:08PWM - LHR
1 stop11h 47mUnited Airlines
Deal found 25/3£1,313
Sun 29/609:30LHR - PWM
2 stops13h 56mAir Canada
Wed 16/710:51PWM - LHR
2 stops14h 39mAir Canada
Deal found 25/3£1,639

Cheapflights Fare Finder

Customise your flight search to find flights from London 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 25 March 2025.
Use the filters below to find and compare flights from London to Portland that are best for you.

Fly from

London

Fly to

Portland

Route

Depart

Return

Price

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 8/5

08:15-14:40

1 stop11h 25m

Portland

Thu 15/5

15:35-09:30

1 stop12h 55m

£475

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 9/5

08:15-14:40

1 stop11h 25m

Portland

Mon 19/5

07:12-09:30

1 stop21h 18m

£494

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 9/5

06:30-23:59

2 stops22h 29m

Portland

Mon 19/5

05:30-06:45

1 stop20h 15m

£559

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 11/9

08:55-16:56

2 stops13h 01m

Portland

Tue 23/9

16:18-09:30

2 stops12h 12m

£581

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 8/5

11:45-00:14

2 stops17h 29m

Portland

Thu 15/5

13:30-10:15

2 stops15h 45m

£584

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 27/8

09:00-23:59

2 stops19h 59m

Portland

Sun 14/9

18:55-20:00

2 stops44h 05m

£609

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 24/4

16:05-00:42

1 stop13h 37m

Portland

Sun 27/4

14:59-10:15

1 stop14h 16m

£620

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 9/5

07:05-00:14

3 stops22h 09m

Portland

Mon 19/5

06:35-09:35

2 stops22h 00m

£693

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 12/5

22:25-23:00

2 stops29h 35m

Portland

Fri 16/5

07:12-09:50

2 stops21h 38m

£886

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 2/7

09:30-18:26

1 stop13h 56m

Portland

Wed 16/7

10:51-07:15

1 stop15h 24m

£1,252

Flights are sorted by cheapest return flights first.

Deals found on 23/3

Showing 1-10 of 18 results
1
2

Best time to book a flight from London to Portland

Have a flexible travel schedule? Discover the best time to fly to Portland from London 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 London to Portland

How far ahead should I book a flight from London to Portland, Maine?

Use this chart to determine the optimal time to book a return flight from London to Portland. Price data was last updated on 21 March 2025.

The price you pay for your flight from London to Portland, Maine may vary depending on when you book. For the best chance of a lower fare, look to book 63 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest time of day to fly from LON to PWM?

Find hourly flight availability from London 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 25 March 2025.

It’s typically best to fly out from London to Portland, Maine in the evening. Doing so could potentially save you 24% on the flight price compared to flying in the afternoon, which is usually more expensive.

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 25 March 2025.

Entertainment

7.9

Food

7.3

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

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
8.0
Very Good

Entertainment

7.9

Food

7.3

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

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

Entertainment

7.9

Food

7.3

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

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

Entertainment

7.9

Food

7.3

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

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

Entertainment

7.9

Food

7.3

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

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

Entertainment

7.9

Food

7.3

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

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 London 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 London?

    If you book a flight to Portland from London, 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. There are 0 flights from London to Portland per day from 5 different airlines.

  • What are the cheapest airlines flying from London to Portland, Maine round-trip?

    Currently priced at £475, JetBlue will fly you from London to Portland, Maine and back. In addition to JetBlue, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Icelandair and Virgin Atlantic - these airlines can fly you to your destination from £494 and £559, respectively. JetBlue is 30% cheaper than the average price of flights available within the next 90 days to this destination.

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

    The cheapet airlines for a one-way flight from London to Portland, Maine are JetBlue (£512), WestJet (£747), and Turkish Airlines (£789).

  • Can I find deals for flights from London to Portland that include hotel bookings?

    Yes. In addition to deals on London to Portland flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from London to Portland?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Portland.

  • Can I find deals for business class flights from London to Portland?

    Yes. Cheapflights offers flight deals from London 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

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Top 5 airlines flying from London to Portland

Discover the top 5 airlines that operate flights from London 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 25 March 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest£414Average£632FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
Virgin AtlanticCheapest£487Average£665FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
FinnairCheapest£497Average£664FlexibilityNo cancel feeOn-time76%
Search Finnair flights
KLMCheapest£501Average£649FlexibilityNo cancel feeOn-time75%
Search KLM flights
United AirlinesCheapest£555Average£691FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

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How does Cheapflights help users find flights from London to Portland?

When you search for this flight from London to Portland, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from London to Portland?

Cheapflights helps you find that perfect flight to Portland from London by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from London to Portland with no change fees?

Need flexible booking options for your flight to Portland from London? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from London to Portland become cheaper?

Of course! You can now track prices for flights from London to Portland and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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