Cheap flights from London Heathrow Airport to Portland, Maine from £460

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 14/10. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — PWM
7 Sep — 14 Sep1
1 adult

Cheap flight deals from Heathrow to Portland

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) 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 2 September 2025.

Round-trip from

£460

One-way from

£460

Popular in

December

Cheapest in

February

Average price

£539
JetBlue
  • JetBlue
  • 14/10-21/10
  • 2 total stops
  • 41h 10m total
  • London to Portland
JetBlue
  • JetBlue
  • 11/10
  • 2 total stops
  • 19h 39m total
  • London to Portland
Highest demand for flights based on searches. 3% potential increase in price (£17 potential increase over avg. return price).
Cheapest flight prices on average. 4% potential price decrease (£19 potential savings vs. average return price).
Average for round-trip flights in September 2025

Find flight deals from Heathrow to Portland

Cheapest flights from Heathrow to Portland
Explore the most affordable flight options available from Heathrow to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 2 September 2025.

Tue 14/1008:15LHR - PWM
1 stop19h 49mJetBlue
Tue 21/1007:09PWM - LHR
1 stop21h 21mJetBlue
Deal found 1/9£460
Mon 29/911:55LHR - PWM
1 stop15h 12mJetBlue
Mon 6/1007:09PWM - LHR
1 stop21h 21mJetBlue
Deal found 1/9£465
Wed 1/1010:55LHR - PWM
2 stops18h 16mVirgin Atlantic
Wed 8/1006:00PWM - LHR
2 stops19h 25mVirgin Atlantic
Deal found 1/9£470
Sat 11/1008:15LHR - PWM
1 stop19h 49mJetBlue
Thu 16/1014:17PWM - LHR
1 stop14h 13mJetBlue
Deal found 1/9£488
Mon 29/912:25LHR - PWM
2 stops16h 46mVirgin Atlantic
Mon 6/1013:27PWM - LHR
2 stops17h 48mVirgin Atlantic
Deal found 1/9£489
Wed 15/1008:15LHR - PWM
1 stop19h 49mJetBlue
Wed 22/1007:09PWM - LHR
1 stop21h 21mJetBlue
Deal found 31/8£497
Sat 11/1008:25LHR - PWM
2 stops43h 39mIcelandair
Thu 16/1014:17PWM - LHR
1 stop14h 13mIcelandair
Deal found 1/9£504
Fri 3/1015:15LHR - PWM
1 stop13h 56mVirgin Atlantic
Sun 5/1006:00PWM - LHR
1 stop19h 45mVirgin Atlantic
Deal found 1/9£505
Fri 17/1008:15LHR - PWM
1 stop19h 49mJetBlue
Fri 24/1007:09PWM - LHR
1 stop21h 21mJetBlue
Deal found 2/9£531
Tue 14/1020:25LHR - PWM
2 stops30h 54mVirgin Atlantic
Tue 21/1006:00PWM - LHR
1 stop20h 15mVirgin Atlantic
Deal found 1/9£536
Wed 15/1010:55LHR - PWM
2 stops16h 24mVirgin Atlantic
Wed 22/1013:27PWM - LHR
1 stop12h 48mVirgin Atlantic
Deal found 31/8£551

Cheapflights Fare Finder

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

Fly from

Heathrow

Fly to

Portland

Route

Depart

Return

Price

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 14/10

08:15-23:04

1 stop19h 49m

Portland

Tue 21/10

07:09-09:30

1 stop21h 21m

£460

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 29/9

11:55-22:07

1 stop15h 12m

Portland

Mon 6/10

07:09-09:30

1 stop21h 21m

£465

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 1/10

09:40-00:11

2 stops19h 31m

Portland

Wed 8/10

06:00-07:15

1 stop20h 15m

£470

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 29/9

11:20-00:11

1 stop17h 51m

Portland

Mon 6/10

06:00-11:10

1 stop24h 10m

£470

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sat 11/10

08:15-23:04

1 stop19h 49m

Portland

Thu 16/10

14:17-09:30

1 stop14h 13m

£488

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 15/10

08:15-23:04

1 stop19h 49m

Portland

Wed 22/10

07:09-09:30

1 stop21h 21m

£497

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sat 11/10

08:25-23:04

2 stops43h 39m

Portland

Thu 16/10

14:17-09:30

1 stop14h 13m

£504

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 3/10

15:15-00:11

1 stop13h 56m

Portland

Sun 5/10

06:00-06:45

1 stop19h 45m

£505

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sat 11/10

08:25-23:04

2 stops19h 39m

£460

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sat 27/9

06:40-22:07

3 stops44h 27m

£543

Flights are sorted by cheapest return flights first.

Deals found on 1/9

Showing 1-10 of 15 results
1
2

Best time to book a flight from Heathrow to Portland

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

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

Find hourly flight availability from Heathrow 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 September 2025.

When flying from London Heathrow Airport to Portland, Maine, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 34% versus a flight at midday.

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 September 2025.
Check out reviews from past customers who have flown with KLM, Finnair, andUnited Airlines from London Heathrow Airport to Portland to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Boarding

7.8

Comfort

7.7

Entertainment

7.1

Food

7.3

Crew

8.4

Overall

7.8

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Boarding

7.8

Comfort

7.7

Entertainment

7.1

Food

7.3

Crew

8.4

Overall

7.8

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Boarding

7.8

Comfort

7.7

Entertainment

7.1

Food

7.3

Crew

8.4

Overall

7.8

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Boarding

7.8

Comfort

7.7

Entertainment

7.1

Food

7.3

Crew

8.4

Overall

7.8

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Boarding

7.8

Comfort

7.7

Entertainment

7.1

Food

7.3

Crew

8.4

Overall

7.8

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Boarding

7.8

Comfort

7.7

Entertainment

7.1

Food

7.3

Crew

8.4

Overall

7.8

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Related info for your journey

Find useful and relevant information for your journey from Heathrow 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 Heathrow?

    Located just 2.9 mi from the city center, Portland is the airport most travelers will use when flying to Portland from London Heathrow. Booking flights from London Heathrow to Portland (PWM) should be relatively easy as there are 0 daily inbound flights from London Heathrow from 6 different airlines.

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

    JetBlue and Virgin Atlantic can get you from London Heathrow Airport to Portland, Maine in just under 19h 31m. Your travel time can differ by up to 18m. The distance from London Heathrow Airport to Portland, Maine is about 3173 mi. This flight may include one or multiple stops.

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

    According to our current data, Icelandair (£381), JetBlue (£395), and Virgin Atlantic (£466) offers the cheapest pricing from London Heathrow Airport to Portland, Maine. Users have found that Icelandair is 41% cheaper than the other options available to this destination.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Heathrow 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 Portland?

Book flights to Portland if you plan to visit one of these locations
Bath

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Alternative routes for Heathrow to Portland

See prices for flight routes from nearby airports that may be better suited for you.

Top 6 airlines flying from Heathrow to Portland

Discover the top 6 airlines that operate flights from Heathrow 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 September 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£381Average£587FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
JetBlueCheapest£395Average£576FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
Virgin AtlanticCheapest£466Average£638FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
FinnairCheapest£468Average£577FlexibilityNo cancel feeOn-time76%
Search Finnair flights
KLMCheapest£479Average£615FlexibilityNo cancel feeOn-time75%
Search KLM flights
United AirlinesCheapest£551Average£731FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

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

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

Certainly. Search results for flights to Portland from Heathrow shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Not ready to book yet? You can track prices for flights from Heathrow to Portland on Cheapflights with our Price Alert feature and get notified when better prices are available.

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