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Cheap flights from London Heathrow Airport to Portland, Maine from £504

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — PWM
13 Jul — 20 Jul1
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 8 July 2025.

Round-trip from

£504

Popular in

December

Cheapest in

February

Average price

£861
JetBlue
  • JetBlue
  • 2/9-6/9
  • 2 total stops
  • 46h 30m total
  • London to Portland
Search Deals
Highest demand for flights based on searches. 2% potential increase in price (£10 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£19 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

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 8 July 2025.

Tue 2/908:15LHR - PWM
1 stop21h 02mJetBlue
Sat 6/914:17PWM - LHR
1 stop25h 28mJetBlue
Deal found 6/7£504
Mon 4/811:55LHR - PWM
1 stop30h 28mIcelandair
Mon 11/806:10PWM - LHR
2 stops19h 20mIcelandair
Deal found 7/7£554
Tue 2/908:15LHR - PWM
2 stops19h 13mAmerican Airlines
Sun 7/913:02PWM - LHR
2 stops16h 13mAmerican Airlines
Deal found 6/7£562
Thu 11/915:30LHR - PWM
1 stop13h 29mMultiple Airlines
Sun 14/913:09PWM - LHR
1 stop12h 31mMultiple Airlines
Deal found 6/7£566
Thu 11/908:40LHR - PWM
2 stops18h 19mUnited Airlines
Sun 14/919:26PWM - LHR
1 stop30h 29mUnited Airlines
Deal found 6/7£587
Mon 4/810:55LHR - PWM
2 stops18h 43mVirgin Atlantic
Mon 11/806:00PWM - LHR
2 stops19h 20mVirgin Atlantic
Deal found 7/7£591
Wed 20/808:55LHR - PWM
2 stops16h 41mFinnair
Wed 27/816:10PWM - LHR
2 stops13h 00mFinnair
Deal found 6/7£595
Wed 3/919:50LHR - PWM
2 stops33h 58mScandinavian Airlines
Sat 6/906:31PWM - LHR
2 stops22h 04mScandinavian Airlines
Deal found 6/7£632
Thu 11/908:30LHR - PWM
3 stops19h 33mAir Canada
Sun 14/908:00PWM - LHR
3 stops17h 30mAir Canada
Deal found 6/7£1,185
Sun 6/722:25LHR - PWM
2 stops43h 58mTurkish Airlines
Sat 12/714:19PWM - LHR
2 stops21h 36mTurkish Airlines
Deal found 6/7£1,530

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 8 July 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 2/9

08:15-00:17

1 stop21h 02m

Portland

Sat 6/9

14:17-20:45

1 stop25h 28m

£504

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 4/8

11:55-13:23

1 stop30h 28m

Portland

Mon 11/8

06:10-06:30

2 stops19h 20m

£554

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 2/9

08:15-22:28

2 stops19h 13m

Portland

Sun 7/9

13:02-10:15

2 stops16h 13m

£562

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 11/9

15:30-23:59

1 stop13h 29m

Portland

Sun 14/9

13:09-06:40

1 stop12h 31m

£566

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 11/9

08:40-21:59

2 stops18h 19m

Portland

Sun 14/9

19:26-06:55

1 stop30h 29m

£587

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 4/8

10:55-00:38

2 stops18h 43m

Portland

Mon 11/8

06:00-06:20

2 stops19h 20m

£591

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 20/8

08:55-20:36

2 stops16h 41m

Portland

Wed 27/8

16:10-10:10

2 stops13h 00m

£595

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 3/9

19:50-00:48

2 stops33h 58m

Portland

Sat 6/9

06:31-09:35

2 stops22h 04m

£632

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 11/9

08:30-23:03

3 stops19h 33m

Portland

Sun 14/9

08:00-06:30

3 stops17h 30m

£1,185

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 28/8

07:00-17:25

2 stops39h 25m

£510

Flights are sorted by cheapest return flights first.

Deals found on 6/7

Showing 1-10 of 12 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 8 July 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 8 July 2025.
Check out reviews from past customers who have flown with Finnair, United Airlines, andVirgin Atlantic 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.
Finnair
7.6
Good
1,311 reviews
Check prices

Overall

7.6

Boarding

7.6

Entertainment

6.9

Comfort

7.4

Crew

8.1

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Finnair
7.6
Good
1,311 reviews
Finnair
7.6
Good
1,311 reviews
Check prices

Overall

7.6

Boarding

7.6

Entertainment

6.9

Comfort

7.4

Crew

8.1

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
United Airlines
7.4
Good
8,844 reviews
Finnair
7.6
Good
1,311 reviews
Check prices

Overall

7.6

Boarding

7.6

Entertainment

6.9

Comfort

7.4

Crew

8.1

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Virgin Atlantic
7.4
Good
652 reviews
Finnair
7.6
Good
1,311 reviews
Check prices

Overall

7.6

Boarding

7.6

Entertainment

6.9

Comfort

7.4

Crew

8.1

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
JetBlue
7.3
Good
2,910 reviews
Finnair
7.6
Good
1,311 reviews
Check prices

Overall

7.6

Boarding

7.6

Entertainment

6.9

Comfort

7.4

Crew

8.1

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Scandinavian Airlines
7.3
Good
1,413 reviews
Finnair
7.6
Good
1,311 reviews
Check prices

Overall

7.6

Boarding

7.6

Entertainment

6.9

Comfort

7.4

Crew

8.1

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

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 7 different airlines.

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

    According to our current data, JetBlue (£504), Icelandair (£554), and American Airlines (£562) offers the cheapest pricing from London Heathrow Airport to Portland, Maine. Users have found that JetBlue is 22% 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 London Heathrow Airport?

Book flights to London Heathrow Airport 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.
Heathrow to Boston flights
Gatwick to Boston flights
London City to Boston flights
Stansted to Boston flights
Luton to Boston flights
Heathrow to Bangor flights
Southend to Boston flights

Top 7 airlines flying from Heathrow to Portland

Discover the top 7 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 8 July 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£378Average£583FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
JetBlueCheapest£394Average£595FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
Virgin AtlanticCheapest£463Average£634FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
FinnairCheapest£465Average£586FlexibilityNo cancel feeOn-time76%
Search Finnair flights
KLMCheapest£476Average£611FlexibilityNo cancel feeOn-time75%
Search KLM flights
LufthansaCheapest£505Average£908FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£548Average£725FlexibilityNo 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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Why should you use Cheapflights to find cheap flight tickets from Heathrow to Portland?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Portland from Heathrow.

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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