Cheap flights from London Heathrow Airport to Portland, Maine from £436

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 28/11. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — PWM
15 ott — 22 ott1
1 adult
1 adult, Economy

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 15 settembre 2025.

Round-trip from

£476

One-way from

£436

Popular in

December

Cheapest in

February

Average price

£544
Virgin Atlantic
  • Virgin Atlantic
  • 29/10-10/11
  • 4 total stops
  • 35h 39m total
  • London to Portland
28/11
  • 28/11
  • 1 total stop
  • 14h 44m total
  • London to Portland
Highest demand for flights based on searches. 4% potential increase in price (£20 potential increase over avg. return price).
Cheapest flight prices on average. 4% potential price decrease (£20 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 15 settembre 2025.

mer 29/1006:30LHR - PWM
2 stops19h 49mVirgin Atlantic
lun 10/1113:25PWM - LHR
2 stops15h 50mVirgin Atlantic
Deal found 14/9£476
mer 29/1011:45LHR - PWM
1 stop14h 25mMultiple Airlines
lun 10/1107:02PWM - LHR
1 stop19h 18mMultiple Airlines
Deal found 14/9£489
sab 27/908:40LHR - PWM
2 stops20h 54mDelta
lun 6/1014:38PWM - LHR
1 stop15h 47mDelta
Deal found 15/9£496
sab 11/1008:15LHR - PWM
1 stop19h 49mJetBlue
sab 18/1007:09PWM - LHR
1 stop21h 21mJetBlue
Deal found 12/9£520
mer 29/1018:00LHR - PWM
3 stops23h 36mAir Canada
lun 10/1106:00PWM - LHR
3 stops19h 30mAir Canada
Deal found 14/9£588
sab 11/1010:55LHR - PWM
2 stops16h 24mDelta
sab 18/1014:38PWM - LHR
1 stop14h 22mDelta
Deal found 12/9£620
sab 11/1010:55LHR - PWM
2 stops16h 24mVirgin Atlantic
sab 18/1006:00PWM - LHR
1 stop19h 45mVirgin Atlantic
Deal found 12/9£654
sab 11/1008:00LHR - PWM
2 stops16h 41mUnited Airlines
sab 18/1015:45PWM - LHR
2 stops13h 55mUnited Airlines
Deal found 12/9£664
sab 25/1011:20LHR - PWM
1 stop15h 59mVirgin Atlantic
ven 31/1006:00PWM - LHR
1 stop20h 25mVirgin Atlantic
Deal found 13/9£706
sab 25/1008:40LHR - PWM
2 stops18h 39mDelta
ven 31/1012:45PWM - LHR
2 stops14h 55mDelta
Deal found 13/9£713

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 15 settembre 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

mer 29/10

08:40-00:05

2 stops19h 25m

Portland

lun 10/11

16:53-08:45

1 stop10h 52m

£476

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

mer 29/10

06:30-22:19

2 stops19h 49m

Portland

lun 10/11

13:25-10:15

2 stops15h 50m

£476

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

mer 29/10

11:45-22:10

1 stop14h 25m

Portland

lun 10/11

07:02-07:20

1 stop19h 18m

£489

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

sab 27/9

08:40-00:34

2 stops20h 54m

Portland

lun 6/10

14:38-11:25

1 stop15h 47m

£496

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

sab 11/10

08:15-23:04

1 stop19h 49m

Portland

sab 18/10

07:09-09:30

1 stop21h 21m

£520

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

mer 29/10

18:00-13:36

3 stops23h 36m

Portland

lun 10/11

06:00-06:30

3 stops19h 30m

£588

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

sab 11/10

10:55-22:19

2 stops16h 24m

Portland

sab 18/10

14:38-10:00

1 stop14h 22m

£620

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

sab 11/10

10:55-22:19

2 stops16h 24m

Portland

sab 18/10

06:00-06:45

1 stop19h 45m

£654

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

sab 11/10

08:00-19:41

2 stops16h 41m

Portland

sab 18/10

15:45-10:40

2 stops13h 55m

£664

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

sab 25/10

08:40-22:19

2 stops18h 39m

Portland

ven 31/10

12:45-07:40

2 stops14h 55m

£713

Flights are sorted by cheapest return flights first.

Deals found on 14/9

Showing 1-10 of 17 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 15 settembre 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.

How much does it cost for a return flight from London Heathrow Airport to Portland, Maine?

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 15 settembre 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.

Crew

8.4

Boarding

7.8

Comfort

7.7

Overall

7.8

Entertainment

7.2

Food

7.3

Reviews

1 / 20
4.0
Okay

Mark,Sept 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.

Crew

8.4

Boarding

7.8

Comfort

7.7

Overall

7.8

Entertainment

7.2

Food

7.3

Reviews

1 / 20
4.0
Okay

Mark,Sept 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.

Crew

8.4

Boarding

7.8

Comfort

7.7

Overall

7.8

Entertainment

7.2

Food

7.3

Reviews

1 / 20
4.0
Okay

Mark,Sept 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.

Crew

8.4

Boarding

7.8

Comfort

7.7

Overall

7.8

Entertainment

7.2

Food

7.3

Reviews

1 / 20
4.0
Okay

Mark,Sept 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.

Crew

8.4

Boarding

7.8

Comfort

7.7

Overall

7.8

Entertainment

7.2

Food

7.3

Reviews

1 / 20
4.0
Okay

Mark,Sept 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.

Crew

8.4

Boarding

7.8

Comfort

7.7

Overall

7.8

Entertainment

7.2

Food

7.3

Reviews

1 / 20
4.0
Okay

Mark,Sept 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.

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?

    Delta and Virgin Atlantic can get you from London Heathrow Airport to Portland, Maine in just under 19h 25m. Your travel time can differ by up to 24m. 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 (£380), JetBlue (£394), and Virgin Atlantic (£466) offers the cheapest pricing from London Heathrow Airport to Portland, Maine. Users have found that Icelandair is 40% 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 15 settembre 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£380Average£585FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
JetBlueCheapest£394Average£575FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
Virgin AtlanticCheapest£466Average£636FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
FinnairCheapest£467Average£576FlexibilityNo cancel feeOn-time76%
Search Finnair flights
KLMCheapest£477Average£614FlexibilityNo cancel feeOn-time75%
Search KLM flights
United AirlinesCheapest£550Average£728FlexibilityNo 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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