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Cheap flights from London Heathrow Airport to Portland, Maine from £475

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/5. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — PWM
30 Mar — 6 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 25 March 2025.

Round-trip from

£475

Popular in

July

Cheapest in

February

Average price

£619
JetBlue
  • JetBlue
  • 8/5-15/5
  • 2 total stops
  • 24h 20m 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).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£20 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 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 25 March 2025.

Thu 8/508:15LHR - PWM
1 stop11h 25mJetBlue
Thu 15/515:35PWM - LHR
1 stop12h 55mJetBlue
Deal found 23/3£475
Fri 9/508:15LHR - PWM
1 stop11h 25mIcelandair
Mon 19/507:12PWM - LHR
1 stop21h 18mIcelandair
Deal found 24/3£494
Fri 9/506:30LHR - PWM
2 stops22h 29mVirgin Atlantic
Mon 19/505:30PWM - LHR
1 stop20h 15mVirgin Atlantic
Deal found 24/3£559
Thu 11/908:55LHR - PWM
2 stops13h 01mFinnair
Tue 23/916:18PWM - LHR
2 stops12h 12mFinnair
Deal found 24/3£581
Thu 8/511:45LHR - PWM
2 stops17h 29mDelta
Thu 15/513:30PWM - LHR
2 stops15h 45mDelta
Deal found 23/3£584
Wed 27/809:00LHR - PWM
2 stops19h 59mMultiple Airlines
Sun 14/918:55PWM - LHR
2 stops44h 05mMultiple Airlines
Deal found 24/3£609
Thu 24/416:05LHR - PWM
1 stop13h 37mKLM
Sun 27/414:59PWM - LHR
1 stop14h 16mKLM
Deal found 24/3£620
Fri 9/507:05LHR - PWM
3 stops22h 09mScandinavian Airlines
Mon 19/506:35PWM - LHR
2 stops22h 00mScandinavian Airlines
Deal found 24/3£693
Mon 12/522:25LHR - PWM
2 stops29h 35mTurkish Airlines
Fri 16/507:12PWM - LHR
2 stops21h 38mTurkish Airlines
Deal found 24/3£886
Wed 2/709:30LHR - PWM
1 stop13h 56mAustrian Airlines
Wed 16/710:51PWM - LHR
1 stop15h 24mAustrian Airlines
Deal found 25/3£1,253
Wed 2/709:30LHR - PWM
2 stops14h 57mUnited Airlines
Tue 15/714:08PWM - LHR
1 stop11h 47mUnited Airlines
Deal found 25/3£1,314
Sun 29/609:30LHR - PWM
2 stops13h 56mAir Canada
Wed 16/710:51PWM - LHR
2 stops14h 39mAir Canada
Deal found 25/3£1,639

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 25 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

Thu 8/5

08:15-14:40

1 stop11h 25m

Portland

Thu 15/5

15:35-09:30

1 stop12h 55m

£475

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 9/5

08:15-14:40

1 stop11h 25m

Portland

Mon 19/5

07:12-09:30

1 stop21h 18m

£494

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 9/5

06:30-23:59

2 stops22h 29m

Portland

Mon 19/5

05:30-06:45

1 stop20h 15m

£559

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 11/9

08:55-16:56

2 stops13h 01m

Portland

Tue 23/9

16:18-09:30

2 stops12h 12m

£581

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 8/5

11:45-00:14

2 stops17h 29m

Portland

Thu 15/5

13:30-10:15

2 stops15h 45m

£584

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 27/8

09:00-23:59

2 stops19h 59m

Portland

Sun 14/9

18:55-20:00

2 stops44h 05m

£609

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 24/4

16:05-00:42

1 stop13h 37m

Portland

Sun 27/4

14:59-10:15

1 stop14h 16m

£620

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 9/5

07:05-00:14

3 stops22h 09m

Portland

Mon 19/5

06:35-09:35

2 stops22h 00m

£693

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 12/5

22:25-23:00

2 stops29h 35m

Portland

Fri 16/5

07:12-09:50

2 stops21h 38m

£886

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 2/7

09:30-18:26

1 stop13h 56m

Portland

Wed 16/7

10:51-07:15

1 stop15h 24m

£1,253

Flights are sorted by cheapest return flights first.

Deals found on 23/3

Showing 1-10 of 18 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 25 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 25 March 2025.
Delta
8.0
Very Good
7,890 reviews
Check prices

Entertainment

7.9

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.3

Crew

8.5

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
7,890 reviews
Delta
8.0
Very Good
7,890 reviews
Check prices

Entertainment

7.9

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.3

Crew

8.5

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
1,318 reviews
Delta
8.0
Very Good
7,890 reviews
Check prices

Entertainment

7.9

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.3

Crew

8.5

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
1,266 reviews
Delta
8.0
Very Good
7,890 reviews
Check prices

Entertainment

7.9

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.3

Crew

8.5

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
7,890 reviews
Check prices

Entertainment

7.9

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.3

Crew

8.5

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
8,605 reviews
Delta
8.0
Very Good
7,890 reviews
Check prices

Entertainment

7.9

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.3

Crew

8.5

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, JetBlue (£475), Icelandair (£494), and Virgin Atlantic (£559) offers the cheapest pricing from London Heathrow Airport to Portland, Maine. Users have found that JetBlue is 30% 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 £513. 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
Heathrow to Bangor flights
Southend to Boston 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 25 March 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest£415Average£632FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
Virgin AtlanticCheapest£488Average£665FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
FinnairCheapest£497Average£664FlexibilityNo cancel feeOn-time76%
Search Finnair flights
KLMCheapest£501Average£650FlexibilityNo cancel feeOn-time75%
Search KLM flights
United AirlinesCheapest£555Average£692FlexibilityNo 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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