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Cheap flights from London to Portland from £542

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/2. Fares are subject to change and may not be available on all flights or dates of travel.
LON — PWM
26 Nov — 3 Dec1
1 adult

The best prices from London to Portland are usually found in March or February, booked 63 days in advance, depart on a Wednesday or Monday 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 21 November 2024.

Round-trip from

£542

Popular in

December

Cheapest in

March

Average price

£607
Delta
  • Delta
  • 10/2-17/2
  • 3 total stops
  • 27h 35m total
  • London to Portland
High demand for flights, 22% potential price rise
Best time to find cheap flights, 18% potential price drop
Average for round-trip flights in November 2024

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 21 November 2024.

Fri 13/1211:30LHR - PWM
2 stops17h 38mDelta
Tue 7/115:02PWM - LHR
1 stop12h 43mDelta
Deal found 20/11£724
Sun 22/1212:05LHR - PWM
1 stop16h 54mUnited Airlines
Wed 1/105:20PWM - LHR
1 stop24h 45mUnited Airlines
Deal found 20/11£926
Sun 22/1210:35LHR - PWM
2 stops17h 26mAmerican Airlines
Wed 1/116:15PWM - LHR
2 stops12h 55mAmerican Airlines
Deal found 20/11£1,062
Fri 13/1209:00LHR - PWM
3 stops18h 50mAir Canada
Tue 7/111:36PWM - LHR
3 stops17h 44mAir Canada
Deal found 20/11£1,322
Sun 22/1209:00LHR - PWM
2 stops19h 37mMultiple Airlines
Wed 1/111:12PWM - LHR
3 stops19h 38mMultiple Airlines
Deal found 20/11£3,243

Find flights from London to Portland within your budget

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 953,013 searches. Data last updated 21 November 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 10/2

11:45-23:57

2 stops17h 12m

Portland

Mon 17/2

15:02-06:25

1 stop10h 23m

£542

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 14/1

06:50-16:52

2 stops15h 02m

Portland

Wed 22/1

11:36-07:10

2 stops14h 34m

£578

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 14/1

10:00-22:30

1 stop17h 30m

Portland

Wed 22/1

11:36-06:55

1 stop14h 19m

£586

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 14/1

09:00-22:30

3 stops18h 30m

Portland

Wed 22/1

11:36-07:10

2 stops14h 34m

£593

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 14/1

09:00-22:30

3 stops18h 30m

Portland

Wed 22/1

11:36-11:50

3 stops19h 14m

£598

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 8/4

11:55-23:01

1 stop16h 06m

Portland

Mon 14/4

17:30-09:30

1 stop11h 00m

£720

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 10/4

07:05-23:31

2 stops21h 26m

Portland

Sun 13/4

05:30-09:35

2 stops23h 05m

£1,037

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sun 22/12

10:35-23:01

2 stops17h 26m

Portland

Wed 1/1

16:15-10:10

2 stops12h 55m

£1,062

Flights are sorted by cheapest return flights first.

Deals found on 20/11

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.

Travel insights for flights from London to Portland

Get recent, data-driven insights about flights from London to Portland including ideal travel times, pricing trends, and more.

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 15 November 2024.

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 21 November 2024.

It’s typically best to fly out from London to Portland, Maine in the evening. Doing so could potentially save you 12% on the flight price compared to flying at midday, 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 21 November 2024.
8.0
Very Good
8,756 reviews

Crew

8.5

Food

7.3

Overall

8.0

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Reviews

1 / 10

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

8.0
Very Good
8,756 reviews
8.0
Very Good
8,756 reviews

Crew

8.5

Food

7.3

Overall

8.0

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Reviews

1 / 10

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

7.6
Good
805 reviews
8.0
Very Good
8,756 reviews

Crew

8.5

Food

7.3

Overall

8.0

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Reviews

1 / 10

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

7.5
Good
3,394 reviews
8.0
Very Good
8,756 reviews

Crew

8.5

Food

7.3

Overall

8.0

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Reviews

1 / 10

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

7.4
Good
9,171 reviews
8.0
Very Good
8,756 reviews

Crew

8.5

Food

7.3

Overall

8.0

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Reviews

1 / 10

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

7.3
Good
1,301 reviews
8.0
Very Good
8,756 reviews

Crew

8.5

Food

7.3

Overall

8.0

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Reviews

1 / 10

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 4 different airlines.

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

    Currently priced at £542, Delta will fly you from London to Portland, Maine and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Austrian Airlines and Air Canada - these airlines can fly you to your destination from £578 and £598, respectively. Delta is 20% cheaper than the average price of flights available within the next 90 days to this destination.

  • 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

Browse thousands of different options on Cheapflights for your next trip

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Top 4 airlines flying from London to Portland

Discover the top 4 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 953,013 searches. Data last updated 21 November 2024.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest£482Average£765FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
FinnairCheapest£503Average£706FlexibilityNo cancel feeOn-time76%
Search Finnair flights
KLMCheapest£542Average£551FlexibilityNo cancel feeOn-time75%
Search KLM flights
United AirlinesCheapest£555Average£864FlexibilityNo 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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