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Cheap flights from London Heathrow Airport to Portland, Maine from £525

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 14/2. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — PWM
9 Feb — 16 Feb1
1 adult
1 adult, Economy, 0 bags

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 10 January 2026.

Round-trip from

£485

Popular in

December

Cheapest in

February

Average price

£557
Finnair
  • Finnair
  • 2/2-9/2
  • 4 total stops
  • 73h 58m total
  • London to Portland
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£74 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease (£35 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 2026
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Find flight deals from Heathrow to Portland

Enter your travel dates to find the best prices.

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 10 January 2026.

Sat 14/213:35LHR - PWM
2 stops33h 36mFinnair
Mon 23/217:40PWM - LHR
1 stop11h 45mFinnair
Deal found 9/1£525
Mon 23/210:45LHR - PWM
1 stop17h 21mVirgin Atlantic
Mon 2/305:31PWM - LHR
1 stop19h 54mVirgin Atlantic
Deal found 9/1£529
Mon 26/106:30LHR - PWM
2 stops20h 57mVirgin Atlantic
Mon 2/205:30PWM - LHR
1 stop22h 30mVirgin Atlantic
Deal found 8/1£534
Mon 23/213:20LHR - PWM
1 stop15h 58mDelta
Mon 2/312:13PWM - LHR
2 stops15h 47mDelta
Deal found 9/1£551
Sat 14/215:50LHR - PWM
1 stop36h 16mVirgin Atlantic
Mon 23/205:31PWM - LHR
1 stop19h 54mVirgin Atlantic
Deal found 9/1£551
Mon 23/215:35LHR - PWM
2 stops13h 15mAmerican Airlines
Mon 2/312:29PWM - LHR
2 stops13h 31mAmerican Airlines
Deal found 9/1£561
Thu 5/212:05LHR - PWM
2 stops16h 25mUnited Airlines
Mon 9/206:00PWM - LHR
1 stop10h 20mUnited Airlines
Deal found 7/1£586
Fri 13/210:00LHR - PWM
2 stops19h 18mDelta
Sun 15/214:35PWM - LHR
1 stop24h 35mDelta
Deal found 9/1£593
Sun 22/216:35LHR - PWM
1 stop12h 43mKLM
Sun 1/314:35PWM - LHR
2 stops18h 15mKLM
Deal found 7/1£604

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 10 January 2026.
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

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

Mon 26/1

06:30-22:27

2 stops20h 57m

Portland

Mon 2/2

05:30-10:15

2 stops23h 45m

£540

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

£551

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

£561

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 5/2

12:05-23:30

2 stops16h 25m

Portland

Mon 9/2

06:00-21:20

1 stop10h 20m

£586

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sun 22/2

10:45-23:06

1 stop17h 21m

Portland

Sun 1/3

05:31-06:25

1 stop19h 54m

£586

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 13/2

10:00-00:18

2 stops19h 18m

Portland

Sun 15/2

14:35-20:10

1 stop24h 35m

£593

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sun 22/2

16:35-00:18

1 stop12h 43m

Portland

Sun 1/3

14:35-13:50

2 stops18h 15m

£604

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 19/6

06:15-21:44

2 stops20h 29m

£526

Flights are sorted by cheapest return flights first.

Deals found on 9/1

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 month to book a flight from London Heathrow Airport to Portland, Maine?

Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Portland, Maine (average of £324). Flying from London Heathrow Airport to Portland, Maine in July is currently the most expensive (average of £374). 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.

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 10 January 2026.
Check out reviews from past customers who have flown with KLM, Finnair, 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.
KLM
7.7
Good
1,434 reviews
Check prices

Overall

7.7

Food

7.2

Boarding

7.8

Comfort

7.6

Crew

8.4

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
KLM
7.7
Good
1,434 reviews
KLM
7.7
Good
1,434 reviews
Check prices

Overall

7.7

Food

7.2

Boarding

7.8

Comfort

7.6

Crew

8.4

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
Finnair
7.6
Good
1,347 reviews
KLM
7.7
Good
1,434 reviews
Check prices

Overall

7.7

Food

7.2

Boarding

7.8

Comfort

7.6

Crew

8.4

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
Virgin Atlantic
7.5
Good
678 reviews
KLM
7.7
Good
1,434 reviews
Check prices

Overall

7.7

Food

7.2

Boarding

7.8

Comfort

7.6

Crew

8.4

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
United Airlines
7.4
Good
9,145 reviews
KLM
7.7
Good
1,434 reviews
Check prices

Overall

7.7

Food

7.2

Boarding

7.8

Comfort

7.6

Crew

8.4

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
JetBlue
7.2
Good
2,891 reviews
KLM
7.7
Good
1,434 reviews
Check prices

Overall

7.7

Food

7.2

Boarding

7.8

Comfort

7.6

Crew

8.4

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle

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.

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

    Finnair, Virgin Atlantic, and Delta can get you from London Heathrow Airport to Portland, Maine in just under 15h 58m. Your travel time can differ by up to 17h 38m. 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, JetBlue (£144), Virgin Atlantic (£470), and Finnair (£471) offers the cheapest pricing from London Heathrow Airport to Portland, Maine. Users have found that JetBlue is 78% 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.

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

    Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Portland, Maine (average of £324). Flying from London Heathrow Airport to Portland, Maine in July is currently the most expensive (average of £374). 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

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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
Stansted to Boston flights
London City 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 10 January 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest£144Average£527FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
Virgin AtlanticCheapest£470Average£552FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
FinnairCheapest£471Average£582FlexibilityNo cancel feeOn-time76%
Search Finnair flights
IcelandairCheapest£490Average£643FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
KLMCheapest£500Average£620FlexibilityNo cancel feeOn-time75%
Search KLM flights
LufthansaCheapest£513Average£734FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£556Average£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?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Portland from Heathrow today with Cheapflights!

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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