Find flights
When to book
Airlines
FAQs

Cheap flights from London Heathrow Airport to Portland, Maine from £517

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 23/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — PWM
22 Jan — 29 Jan1
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 17 January 2025.

Round-trip from

£519

One-way from

£517

Popular in

July

Cheapest in

February

Average price

£568
KLM
  • KLM
  • 18/2-25/2
  • 2 total stops
  • 29h 31m total
  • London to Portland
Search Deals
JetBlue
  • JetBlue
  • 23/4
  • 1 total stop
  • 14h 15m total
  • London to Portland
Search Deals
High demand for flights, 17% potential price rise
Search Deals
Best time to find cheap flights, 4% potential price drop
Search Deals
Average for round-trip flights in January 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 17 January 2025.

Tue 18/214:30LHR - PWM
1 stop14h 25mKLM
Tue 25/215:04PWM - LHR
1 stop15h 06mKLM
Deal found 16/1£519
Tue 18/212:20LHR - PWM
2 stops16h 35mVirgin Atlantic
Tue 25/205:34PWM - LHR
1 stop24h 01mVirgin Atlantic
Deal found 16/1£520
Tue 18/210:00LHR - PWM
2 stops18h 57mDelta
Tue 25/205:27PWM - LHR
1 stop9h 43mDelta
Deal found 15/1£524
Tue 18/213:10LHR - PWM
1 stop14h 31mMultiple Airlines
Tue 25/212:49PWM - LHR
1 stop12h 46mMultiple Airlines
Deal found 15/1£530
Wed 19/207:25LHR - PWM
2 stops20h 16mFinnair
Fri 28/214:29PWM - LHR
2 stops12h 21mFinnair
Deal found 16/1£533
Tue 18/206:40LHR - PWM
2 stops22h 17mScandinavian Airlines
Tue 25/215:04PWM - LHR
3 stops18h 31mScandinavian Airlines
Deal found 16/1£793
Tue 18/209:00LHR - PWM
3 stops19h 15mAir Canada
Tue 25/212:15PWM - LHR
3 stops17h 05mAir Canada
Deal found 15/1£805
Thu 12/607:25LHR - PWM
2 stops16h 42mUnited Airlines
Wed 20/812:47PWM - LHR
1 stop12h 08mUnited Airlines
Deal found 16/1£920
Sat 9/811:55LHR - PWM
1 stop14h 57mJetBlue
Sat 23/814:40PWM - LHR
1 stop13h 50mJetBlue
Deal found 16/1£985
Fri 17/118:00LHR - PWM
2 stops33h 30mLufthansa
Mon 20/118:05PWM - LHR
2 stops32h 05mLufthansa
Deal found 16/1£1,055
Tue 4/206:00LHR - PWM
2 stops21h 30mAustrian Airlines
Tue 11/211:36PWM - LHR
1 stop16h 34mAustrian Airlines
Deal found 16/1£3,782

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 17 January 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 18/2

14:30-23:55

1 stop14h 25m

Portland

Tue 25/2

15:04-11:10

1 stop15h 06m

£519

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 18/2

12:20-23:55

2 stops16h 35m

Portland

Tue 25/2

05:34-10:35

1 stop24h 01m

£520

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 18/2

10:00-23:57

2 stops18h 57m

Portland

Tue 25/2

05:27-20:10

1 stop9h 43m

£524

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 18/2

13:10-22:41

1 stop14h 31m

Portland

Tue 25/2

12:49-06:35

1 stop12h 46m

£530

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 19/2

07:25-22:41

2 stops20h 16m

Portland

Fri 28/2

14:29-07:50

2 stops12h 21m

£533

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 18/2

06:40-23:57

2 stops22h 17m

Portland

Tue 25/2

15:04-14:35

3 stops18h 31m

£793

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 18/2

09:00-23:15

3 stops19h 15m

Portland

Tue 25/2

12:15-10:20

3 stops17h 05m

£805

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 12/6

07:25-19:07

2 stops16h 42m

Portland

Wed 20/8

12:47-05:55

1 stop12h 08m

£920

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 4/2

06:00-22:30

2 stops21h 30m

Portland

Tue 11/2

11:36-09:10

1 stop16h 34m

£3,782

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 23/4

07:25-16:40

1 stop14h 15m

£517

Flights are sorted by cheapest return flights first.

Deals found on 15/1

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.

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 17 January 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 17 January 2025.
Delta
8.0
Very Good
8,513 reviews
Check prices

Overall

8.0

Crew

8.6

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 10

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

Delta
8.0
Very Good
8,513 reviews
Delta
8.0
Very Good
8,513 reviews
Check prices

Overall

8.0

Crew

8.6

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 10

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

KLM
7.8
Good
1,339 reviews
Delta
8.0
Very Good
8,513 reviews
Check prices

Overall

8.0

Crew

8.6

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 10

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

Finnair
7.6
Good
1,285 reviews
Delta
8.0
Very Good
8,513 reviews
Check prices

Overall

8.0

Crew

8.6

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 10

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

Austrian Airlines
7.6
Good
786 reviews
Delta
8.0
Very Good
8,513 reviews
Check prices

Overall

8.0

Crew

8.6

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 10

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

Virgin Atlantic
7.5
Good
664 reviews
Delta
8.0
Very Good
8,513 reviews
Check prices

Overall

8.0

Crew

8.6

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 10

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 (£519), Virgin Atlantic (£520), and Delta (£524) offers the cheapest pricing from London Heathrow Airport to Portland, Maine. Users have found that KLM is 27% 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 £517. 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 17 January 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest£500Average£799FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
FinnairCheapest£526Average£696FlexibilityNo cancel feeOn-time76%
Search Finnair flights
KLMCheapest£530Average£568FlexibilityNo cancel feeOn-time75%
Search KLM flights
United AirlinesCheapest£575Average£753FlexibilityNo 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.

100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.