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Cheap flights from London Heathrow Airport to Portland, Maine from £412

LHR — PWM
29 Nov — 6 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Heathrow to Portland

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Portland

Thu 12/1112:20 -
1 stop16h 23m
Mon 16/1106:30 -
1 stop10h 10m
Deal found 25/10£707
Wed 2/1206:40 -
2 stops22h 41m
Sun 6/1206:00 -
2 stops30h 40m
Deal found 28/10£741
Wed 2/1212:05 -
2 stops16h 19m
Sun 6/1209:12 -
1 stop31h 08m
Deal found 28/10£761
Wed 25/1112:05 -
2 stops16h 16m
Wed 2/1214:15 -
2 stops13h 55m
Deal found 28/10£762
Mon 23/1112:05 -
2 stops16h 16m
Mon 30/1114:05 -
1 stop15h 45m
Deal found 26/10£765
Thu 12/1106:25 -
2 stops22h 18m
Mon 16/1106:30 -
2 stops28h 50m
Deal found 25/10£785

Find flight deals from Heathrow to Portland

Round-trip from

£707

One-way from

£412

Popular in

August

Cheapest in

April

Average price

£945
JetBlue
  • JetBlue
  • 12/11-16/11
  • 2 total stops
  • 26h 33m total
  • London to Portland
Search Deals
8/12-31/12
  • 8/12-31/12
  • 2 total stops
  • 28h 38m total
  • London to Portland
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (£66 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£17 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 2026
Search Deals

Cheapflights Fare Finder

 
Use the filters below to find and compare flights from London Heathrow Airport to Portland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonPortland

LHR London Heathrow - PWM Portland

LHRPWM

London Heathrow

Tue 8/12

09:30-09:08

2 stops28h 38m

Portland

Wed 31/12

00:00-06:00

Nonstop0h 00m

£412

LondonPortland

LHR London Heathrow - PWM Portland

LHRPWM

London Heathrow

Tue 8/12

12:50-13:38

1 stop29h 48m

Portland

Wed 31/12

00:00-06:00

Nonstop0h 00m

£583

LondonPortland

LHR London Heathrow - PWM Portland

LHRPWM

London Heathrow

Wed 2/12

06:40-00:21

2 stops22h 41m

Portland

Sun 6/12

06:00-17:40

2 stops30h 40m

£744

LondonPortland

LHR London Heathrow - PWM Portland

LHRPWM

London Heathrow

Wed 2/12

09:00-23:24

2 stops19h 24m

Portland

Sun 6/12

19:55-20:35

1 stop19h 40m

£763
Fastest return journey

LondonPortland

LHR London Heathrow - PWM Portland

LHRPWM

London Heathrow

Wed 9/12

12:05-23:24

2 stops16h 19m

Portland

Wed 16/12

06:00-21:20

1 stop10h 20m

£765

LondonPortland

LHR London Heathrow - PWM Portland

LHRPWM

London Heathrow

Mon 23/11

12:05-23:21

2 stops16h 16m

Portland

Mon 30/11

15:41-10:50

2 stops14h 09m

£765

LondonPortland

LHR London Heathrow - PWM Portland

LHRPWM

London Heathrow

Thu 26/11

16:45-12:05

2 stops24h 20m

Portland

Thu 3/12

12:44-08:35

1 stop14h 51m

£790

LondonPortland

LHR London Heathrow - PWM Portland

LHRPWM

London Heathrow

Thu 26/11

12:05-09:00

2 stops25h 55m

Portland

Thu 3/12

06:00-06:40

2 stops19h 40m

£791

Flights are sorted by cheapest return flights first.

Deals found on 28/10

Sorted by cheapest first

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

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to Portland

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

Currently, April is the cheapest month in which you can book a flight from London Heathrow Airport to Portland, Maine (average of £546). Flying from London Heathrow Airport to Portland, Maine in August is currently the most expensive (average of £979). 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.

Related info for your journey

  • 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 0 different airlines.

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

    Scandinavian Airlines and United Airlines can get you from London Heathrow Airport to Portland, Maine in just under 19h 24m. Your travel time can differ by up to 3h 17m. The distance from London Heathrow Airport to Portland, Maine is about 3173 mi. This flight may include one or multiple stops.

  • 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.

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

    Currently, April is the cheapest month in which you can book a flight from London Heathrow Airport to Portland, Maine (average of £546). Flying from London Heathrow Airport to Portland, Maine in August is currently the most expensive (average of £979). 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

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Heathrow to Portland

Heathrow to Boston flights
Gatwick to Boston flights
London City to Boston flights
Stansted to Boston flights
Luton to Boston flights
Southend to Boston flights
Heathrow to Bangor flights

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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.

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