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Cheap flights from London Heathrow Airport to Portland, Maine from £485

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 2/6. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — PWM
3 Apr — 10 Apr1
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 29 March 2025.

Round-trip from

£581

One-way from

£485

Popular in

July

Cheapest in

February

Average price

£618
25/4-5/5
  • 25/4-5/5
  • 2 total stops
  • 25h 48m total
  • London to Portland
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2/6
  • 2/6
  • 3 total stops
  • 43h 18m total
  • London to Portland
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (£101 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£20 potential savings vs. average return price).
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Average for round-trip flights in March 2025
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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 29 March 2025.

Fri 25/412:45LHR - PWM
1 stop16h 09mMultiple Airlines
Mon 5/516:01PWM - LHR
1 stop9h 39mMultiple Airlines
Deal found 28/3£581
Sun 1/608:15LHR - PWM
1 stop20h 04mIcelandair
Sun 8/607:15PWM - LHR
1 stop32h 30mIcelandair
Deal found 28/3£613
Fri 25/411:45LHR - PWM
1 stop16h 29mVirgin Atlantic
Mon 5/505:20PWM - LHR
2 stops20h 00mVirgin Atlantic
Deal found 28/3£658
Fri 25/408:40LHR - PWM
2 stops19h 34mDelta
Mon 5/514:59PWM - LHR
2 stops14h 31mDelta
Deal found 28/3£674
Fri 25/411:05LHR - PWM
2 stops15h 00mFinnair
Sat 10/516:01PWM - LHR
2 stops12h 29mFinnair
Deal found 28/3£691
Thu 19/608:40LHR - PWM
2 stops30h 53mUnited Airlines
Sun 22/616:43PWM - LHR
1 stop34h 37mUnited Airlines
Deal found 28/3£716
Mon 21/711:55LHR - PWM
1 stop16h 42mJetBlue
Mon 4/806:10PWM - LHR
1 stop9h 35mJetBlue
Deal found 27/3£921
Mon 21/712:40LHR - PWM
2 stops29h 38mAir Canada
Tue 5/806:00PWM - LHR
2 stops19h 30mAir Canada
Deal found 27/3£1,100
Sun 1/606:40LHR - PWM
3 stops22h 34mScandinavian Airlines
Sun 8/606:30PWM - LHR
2 stops27h 05mScandinavian Airlines
Deal found 28/3£1,269

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 29 March 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

Fri 25/4

12:45-23:54

1 stop16h 09m

Portland

Mon 5/5

16:01-06:40

1 stop9h 39m

£581

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sun 1/6

08:15-23:19

1 stop20h 04m

Portland

Sun 8/6

07:15-20:45

1 stop32h 30m

£613

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 25/4

11:45-23:14

1 stop16h 29m

Portland

Mon 5/5

05:20-06:20

2 stops20h 00m

£658

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 25/4

08:40-23:14

2 stops19h 34m

Portland

Mon 5/5

14:59-10:30

2 stops14h 31m

£674

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 25/4

11:05-21:05

2 stops15h 00m

Portland

Sat 10/5

16:01-09:30

2 stops12h 29m

£691

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 19/6

08:40-10:33

2 stops30h 53m

Portland

Sun 22/6

16:43-08:20

1 stop34h 37m

£716

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 21/7

11:55-23:37

1 stop16h 42m

Portland

Mon 4/8

06:10-20:45

1 stop9h 35m

£921

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 21/7

12:40-13:18

2 stops29h 38m

Portland

Tue 5/8

06:00-06:30

2 stops19h 30m

£1,100

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sun 1/6

06:40-00:14

3 stops22h 34m

Portland

Sun 8/6

06:30-14:35

2 stops27h 05m

£1,269

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 2/6

21:35-11:53

3 stops43h 18m

£485

Flights are sorted by cheapest return flights first.

Deals found on 28/3

Showing 1-10 of 16 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 29 March 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.

Rainfall in Portland by month

Plan your trip to Portland by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Portland, Maine ranges from 73.0 - 115.0 inches per month. November is typically the wettest month, when rainfall can reach 115.0 mm. August is typically the driest time to visit Portland, Maine when rainfall is around 73.0 mm.

Temperature in Portland by month

Plan your trip to Portland by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Portland, Maine, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 20.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).

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 29 March 2025.
Delta
8.0
Very Good
7,895 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very Good
7,895 reviews
Delta
8.0
Very Good
7,895 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Finnair
7.6
Good
1,267 reviews
Delta
8.0
Very Good
7,895 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Austrian Airlines
7.5
Good
769 reviews
Delta
8.0
Very Good
7,895 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,609 reviews
Delta
8.0
Very Good
7,895 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Virgin Atlantic
7.4
Good
634 reviews
Delta
8.0
Very Good
7,895 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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 5 different airlines.

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

    According to our current data, Icelandair (£613), Virgin Atlantic (£658), and Delta (£674) offers the cheapest pricing from London Heathrow Airport to Portland, Maine. Users have found that Icelandair is 10% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from London Heathrow Airport to Portland, Maine one-way?

    The cheapest airline one-way is JetBlue, with whom users have recently found tickets for as low as £512. However, be on the lookout for offers from WestJet and Turkish Airlines, as they are both options that can get you from London Heathrow Airport to Portland, Maine for a low price.

  • 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
Southend to Boston flights
Heathrow to Bangor flights

Top 5 airlines flying from Heathrow to Portland

Discover the top 5 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 29 March 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest£414Average£631FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
Virgin AtlanticCheapest£487Average£664FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
FinnairCheapest£496Average£664FlexibilityNo cancel feeOn-time76%
Search Finnair flights
KLMCheapest£500Average£649FlexibilityNo cancel feeOn-time75%
Search KLM flights
United AirlinesCheapest£555Average£691FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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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