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Cheap flights from London to Portland, Maine from £448

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 16/2. Fares are subject to change and may not be available on all flights or dates of travel.
LON — PWM
11 Feb — 18 Feb1
1 adult
1 adult, Economy, 0 bags

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 12 January 2026.

Round-trip from

£522

One-way from

£448

Popular in

December

Cheapest in

October

Average price

£571
Virgin Atlantic
  • Virgin Atlantic
  • 25/2-4/3
  • 2 total stops
  • 39h 05m total
  • London to Portland
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16/2
  • 16/2
  • 3 total stops
  • 48h 27m total
  • London to Portland
Search Deals
Highest demand for flights based on searches. 2% potential increase in price (£11 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£14 potential savings vs. average return price).
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Average for round-trip flights in January 2026
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Find flight deals from London to Portland

Enter your travel dates to find the best prices.

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 12 January 2026.

Wed 25/208:55LHR - PWM
1 stop19h 11mVirgin Atlantic
Wed 4/305:31PWM - LHR
1 stop19h 54mVirgin Atlantic
Deal found 11/1£522
Wed 25/208:40LHR - PWM
2 stops20h 38mDelta
Wed 4/314:35PWM - LHR
1 stop12h 30mDelta
Deal found 11/1£538
Fri 13/316:30LHR - PWM
2 stops23h 44mIberia
Sat 21/312:44PWM - LHR
2 stops14h 16mIberia
Deal found 11/1£555
Fri 13/215:00LHR - PWM
2 stops36h 59mIberia
Fri 20/217:40PWM - LHR
1 stop11h 45mIberia
Deal found 11/1£575
Sat 14/212:30LHR - PWM
1 stop15h 36mVirgin Atlantic
Fri 20/205:31PWM - LHR
2 stops24h 19mVirgin Atlantic
Deal found 11/1£590
Fri 13/206:30LHR - PWM
2 stops22h 48mDelta
Sun 15/214:35PWM - LHR
1 stop24h 35mDelta
Deal found 10/1£593
Fri 13/206:40LHR - PWM
2 stops22h 38mScandinavian Airlines
Fri 20/214:35PWM - LHR
2 stops13h 45mScandinavian Airlines
Deal found 11/1£595
Sat 14/212:30LHR - PWM
1 stop15h 36mKLM
Fri 20/212:13PWM - LHR
1 stop15h 32mKLM
Deal found 11/1£598
Thu 5/212:05LHR - PWM
2 stops16h 25mUnited Airlines
Mon 9/215:12PWM - LHR
2 stops15h 03mUnited Airlines
Deal found 11/1£605

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 12 January 2026.
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

Wed 25/2

08:55-23:06

1 stop19h 11m

Portland

Wed 4/3

05:31-06:25

1 stop19h 54m

£522

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sat 14/2

13:35-18:11

2 stops33h 36m

Portland

Mon 23/2

17:40-10:25

1 stop11h 45m

£525

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 25/2

08:40-00:18

2 stops20h 38m

Portland

Wed 4/3

14:35-08:05

1 stop12h 30m

£538

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 23/2

13:20-00:18

1 stop15h 58m

Portland

Mon 2/3

12:13-09:00

2 stops15h 47m

£551

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sat 14/2

15:50-23:06

1 stop36h 16m

Portland

Mon 23/2

05:31-06:25

1 stop19h 54m

£552

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 23/2

15:35-23:50

2 stops13h 15m

Portland

Mon 2/3

12:29-07:00

2 stops13h 31m

£562

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sat 14/2

12:30-23:06

1 stop15h 36m

Portland

Fri 20/2

05:31-10:50

2 stops24h 19m

£590

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 13/2

06:30-00:18

2 stops22h 48m

Portland

Sun 15/2

14:35-20:10

1 stop24h 35m

£593

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 5/2

12:05-23:30

2 stops16h 25m

Portland

Mon 9/2

16:10-11:15

1 stop14h 05m

£606

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 17/2

06:00-10:17

3 stops33h 17m

£478

Flights are sorted by cheapest return flights first.

Deals found on 11/1

Showing 1-10 of 20 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

What is the cheapest month to book a flight from London to Portland, Maine?

Currently, July is the cheapest month in which you can book a flight from London to Portland, Maine (average of £140). Flying from London to Portland, Maine in December is currently the most expensive (average of £370). 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.

What’s the top stopover airport for flights from London to Portland, Maine?

Share of one-stop return flights from London to Portland, Maine chosen by Cheapflights users in the past 12 months, using the same stopover each way.

New York (JFK) – chosen by Cheapflights users on 50% of one-stop itineraries from London to Portland, Maine on Cheapflights.

What’s the cheapest stopover airport for flights from London to Portland, Maine?

Average return fare for one-stop flights from London to Portland, Maine, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

Chicago (ORD) is the most affordable one-stop option, with an average return flight price of £472.

What’s the fastest stopover option from London to Portland, Maine?

Shortest average travel time for one-stop one-way flights from London to Portland, Maine, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Flights via Newark (EWR) have the shortest average one-way travel time for one-stop routes: 11h 35m.

Which airport typically offers the quickest stopover for flights from London to Portland, Maine?

Average stopover duration for one-stop one-way flights from London to Portland, Maine, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Chicago (ORD) offer the fastest connection on this route, with an average stopover time of 1h 10m.

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 12 January 2026.
Get a feel of what it's like to fly with KLM, Finnair, andUnited Airlines from London 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
7.7
Good
1,436 reviews
Check prices

Entertainment

7.1

Comfort

7.6

Crew

8.4

Food

7.2

Boarding

7.7

Overall

7.7

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
KLM
7.7
Good
1,436 reviews
KLM
7.7
Good
1,436 reviews
Check prices

Entertainment

7.1

Comfort

7.6

Crew

8.4

Food

7.2

Boarding

7.7

Overall

7.7

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
Finnair
7.6
Good
1,347 reviews
KLM
7.7
Good
1,436 reviews
Check prices

Entertainment

7.1

Comfort

7.6

Crew

8.4

Food

7.2

Boarding

7.7

Overall

7.7

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
United Airlines
7.4
Good
9,144 reviews
KLM
7.7
Good
1,436 reviews
Check prices

Entertainment

7.1

Comfort

7.6

Crew

8.4

Food

7.2

Boarding

7.7

Overall

7.7

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
JetBlue
7.2
Good
2,883 reviews
KLM
7.7
Good
1,436 reviews
Check prices

Entertainment

7.1

Comfort

7.6

Crew

8.4

Food

7.2

Boarding

7.7

Overall

7.7

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
Lufthansa
6.8
Okay
7,709 reviews
KLM
7.7
Good
1,436 reviews
Check prices

Entertainment

7.1

Comfort

7.6

Crew

8.4

Food

7.2

Boarding

7.7

Overall

7.7

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.

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 7 different airlines.

  • How long is the flight from London to Portland, Maine?

    Virgin Atlantic, Finnair, and Delta can get you from London to Portland, Maine in just under 19h 11m. Your travel time can differ by up to 14h 25m. The distance between London and Portland, Maine is about 3173 mi. Both multi-stop and direct flights can be found to your destination and back.

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

    Currently priced at £144, 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 Virgin Atlantic and Finnair - these airlines can fly you to your destination from £472 and £472, respectively. JetBlue is 77% 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.

  • What is the cheapest month to book a flight from London to Portland, Maine?

    Currently, July is the cheapest month in which you can book a flight from London to Portland, Maine (average of £140). Flying from London to Portland, Maine in December is currently the most expensive (average of £370). 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

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Top 7 airlines flying from London to Portland

Discover the top 7 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 12 January 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest£144Average£527FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
Virgin AtlanticCheapest£472Average£570FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
FinnairCheapest£472Average£617FlexibilityNo cancel feeOn-time76%
Search Finnair flights
IcelandairCheapest£490Average£644FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
KLMCheapest£501Average£621FlexibilityNo cancel feeOn-time75%
Search KLM flights
LufthansaCheapest£513Average£735FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£557Average£726FlexibilityNo cancel feeOn-time69%
Search United Airlines 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 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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