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Cheap flights from London Heathrow Airport to Portland, Maine from £530

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 27/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — PWM
27 Feb — 6 Mar1
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 22 February 2025.

Round-trip from

£598

One-way from

£530

Popular in

July

Cheapest in

January

Average price

£581
KLM
  • KLM
  • 21/3-28/3
  • 2 total stops
  • 36h 50m total
  • London to Portland
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WestJet
  • WestJet
  • 27/4
  • 2 total stops
  • 37h 59m total
  • London to Portland
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (£112 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£24 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 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 22 February 2025.

Fri 21/316:35LHR - PWM
1 stop11h 40mKLM
Fri 28/315:00PWM - LHR
1 stop25h 10mKLM
Deal found 21/2£598
Sun 23/307:40LHR - PWM
2 stops20h 07mUnited Airlines
Sun 30/318:45PWM - LHR
1 stop31h 10mUnited Airlines
Deal found 21/2£600
Sun 23/318:00LHR - PWM
2 stops33h 15mLufthansa
Sun 30/318:45PWM - LHR
1 stop31h 10mLufthansa
Deal found 21/2£608
Fri 21/306:30LHR - PWM
2 stops21h 45mDelta
Fri 28/315:00PWM - LHR
1 stop25h 10mDelta
Deal found 21/2£611
Mon 7/420:55LHR - PWM
2 stops32h 04mVirgin Atlantic
Mon 14/405:20PWM - LHR
1 stop24h 50mVirgin Atlantic
Deal found 21/2£658
Tue 8/415:20LHR - PWM
1 stop13h 07mAustrian Airlines
Tue 15/406:15PWM - LHR
1 stop18h 40mAustrian Airlines
Deal found 21/2£708
Mon 7/406:40LHR - PWM
3 stops21h 30mMultiple Airlines
Mon 14/406:25PWM - LHR
3 stops30h 15mMultiple Airlines
Deal found 21/2£713
Mon 7/411:55LHR - PWM
1 stop16h 05mJetBlue
Mon 14/406:10PWM - LHR
1 stop9h 35mJetBlue
Deal found 21/2£714
Fri 21/306:40LHR - PWM
2 stops21h 35mScandinavian Airlines
Fri 28/315:00PWM - LHR
3 stops19h 35mScandinavian Airlines
Deal found 21/2£1,018
Fri 21/309:00LHR - PWM
3 stops18h 15mAir Canada
Fri 28/311:20PWM - LHR
3 stops19h 00mAir Canada
Deal found 21/2£1,032

Find flights from Heathrow to Portland within your budget

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 22 February 2025.

Fly from

Heathrow

Fly to

Portland

Route

Depart

Return

Price

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 21/3

16:35-00:15

1 stop11h 40m

Portland

Fri 28/3

15:00-20:10

1 stop25h 10m

£598

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sun 23/3

07:40-23:47

2 stops20h 07m

Portland

Sun 30/3

18:45-06:55

1 stop31h 10m

£600

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sun 23/3

18:00-23:15

2 stops33h 15m

Portland

Sun 30/3

18:45-06:55

1 stop31h 10m

£608

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 21/3

06:30-00:15

2 stops21h 45m

Portland

Fri 28/3

15:00-20:10

1 stop25h 10m

£611

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 7/4

20:55-23:59

2 stops32h 04m

Portland

Mon 14/4

05:20-11:10

1 stop24h 50m

£658

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 8/4

15:20-23:27

1 stop13h 07m

Portland

Tue 15/4

06:15-05:55

1 stop18h 40m

£708

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 7/4

06:40-23:10

3 stops21h 30m

Portland

Mon 14/4

06:25-17:40

3 stops30h 15m

£713

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 7/4

11:55-23:00

1 stop16h 05m

Portland

Mon 14/4

06:10-20:45

1 stop9h 35m

£714

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 21/3

06:40-00:15

2 stops21h 35m

Portland

Fri 28/3

15:00-14:35

3 stops19h 35m

£1,018

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 21/3

09:00-23:15

3 stops18h 15m

Portland

Fri 28/3

11:20-10:20

3 stops19h 00m

£1,032

Flights are sorted by cheapest return flights first.

Deals found on 21/2

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.

Travel insights for flights from Heathrow to Portland

Get recent, data-driven insights about flights from Heathrow to Portland including ideal travel times, pricing trends, and more.

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 22 February 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 22 February 2025.
Delta
8.0
Very Good
8,212 reviews
Check prices

Crew

8.5

Food

7.3

Overall

8.0

Comfort

8.0

Boarding

8.2

Entertainment

7.9

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
8,212 reviews
Delta
8.0
Very Good
8,212 reviews
Check prices

Crew

8.5

Food

7.3

Overall

8.0

Comfort

8.0

Boarding

8.2

Entertainment

7.9

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

KLM
7.8
Good
1,330 reviews
Delta
8.0
Very Good
8,212 reviews
Check prices

Crew

8.5

Food

7.3

Overall

8.0

Comfort

8.0

Boarding

8.2

Entertainment

7.9

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
771 reviews
Delta
8.0
Very Good
8,212 reviews
Check prices

Crew

8.5

Food

7.3

Overall

8.0

Comfort

8.0

Boarding

8.2

Entertainment

7.9

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
7.5
Good
653 reviews
Delta
8.0
Very Good
8,212 reviews
Check prices

Crew

8.5

Food

7.3

Overall

8.0

Comfort

8.0

Boarding

8.2

Entertainment

7.9

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

JetBlue
7.4
Good
3,069 reviews
Delta
8.0
Very Good
8,212 reviews
Check prices

Crew

8.5

Food

7.3

Overall

8.0

Comfort

8.0

Boarding

8.2

Entertainment

7.9

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 4 different airlines.

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

    According to our current data, KLM (£598), United Airlines (£600), and Lufthansa (£608) offers the cheapest pricing from London Heathrow Airport to Portland, Maine. Users have found that KLM is 15% 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 WestJet, with whom users have recently found tickets for as low as £530. However, be on the lookout for offers from JetBlue and Austrian 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
Heathrow to Bangor flights
Southend to Boston flights

Top 4 airlines flying from Heathrow to Portland

Discover the top 4 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 22 February 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest£424Average£760FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
Virgin AtlanticCheapest£498Average£680FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
FinnairCheapest£508Average£675FlexibilityNo cancel feeOn-time76%
Search Finnair flights
United AirlinesCheapest£555Average£747FlexibilityNo 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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