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Cheap flights from London Heathrow Airport to Portland, Maine from £554

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 21/8. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — PWM
23 Jul — 30 Jul1
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 18 July 2025.

Round-trip from

£557

One-way from

£554

Popular in

December

Cheapest in

February

Average price

£842
JetBlue
  • JetBlue
  • 1/9-8/9
  • 2 total stops
  • 31h 35m total
  • London to Portland
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21/8
  • 21/8
  • 3 total stops
  • 57h 08m total
  • London to Portland
Search Deals
Highest demand for flights based on searches. 2% potential increase in price (£13 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£19 potential savings vs. average return price).
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Average for round-trip flights in July 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 18 July 2025.

Mon 1/911:55LHR - PWM
1 stop17h 22mJetBlue
Mon 8/914:17PWM - LHR
1 stop14h 13mJetBlue
Deal found 18/7£557
Mon 1/908:30LHR - PWM
2 stops18h 29mUnited Airlines
Mon 8/916:56PWM - LHR
1 stop32h 24mUnited Airlines
Deal found 18/7£562
Mon 1/911:45LHR - PWM
2 stops35h 03mMultiple Airlines
Mon 8/918:33PWM - LHR
2 stops30h 52mMultiple Airlines
Deal found 18/7£574
Mon 1/908:40LHR - PWM
2 stops20h 23mDelta
Mon 8/914:36PWM - LHR
2 stops14h 54mDelta
Deal found 18/7£604
Sat 30/808:00LHR - PWM
2 stops17h 36mFinnair
Sat 6/913:09PWM - LHR
1 stop13h 56mFinnair
Deal found 16/7£650
Sat 30/808:00LHR - PWM
1 stop15h 46mAustrian Airlines
Sat 6/910:39PWM - LHR
1 stop29h 01mAustrian Airlines
Deal found 16/7£696
Sat 30/806:40LHR - PWM
3 stops23h 08mScandinavian Airlines
Sat 6/906:31PWM - LHR
2 stops22h 04mScandinavian Airlines
Deal found 16/7£923
Mon 1/908:30LHR - PWM
3 stops19h 33mAir Canada
Mon 8/910:39PWM - LHR
3 stops17h 56mAir Canada
Deal found 18/7£1,555

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 18 July 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

Mon 1/9

11:55-00:17

1 stop17h 22m

Portland

Mon 8/9

14:17-09:30

1 stop14h 13m

£557

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 1/9

08:30-21:59

2 stops18h 29m

Portland

Mon 8/9

16:56-06:20

1 stop32h 24m

£562

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 1/9

11:45-17:48

2 stops35h 03m

Portland

Mon 8/9

18:33-06:25

2 stops30h 52m

£574

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 1/9

08:40-00:03

2 stops20h 23m

Portland

Mon 8/9

14:36-10:30

2 stops14h 54m

£604

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sat 30/8

08:00-20:36

2 stops17h 36m

Portland

Sat 6/9

13:09-08:05

1 stop13h 56m

£650

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sat 30/8

08:00-18:46

1 stop15h 46m

Portland

Sat 6/9

10:39-20:40

1 stop29h 01m

£696

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sat 30/8

06:40-00:48

3 stops23h 08m

Portland

Sat 6/9

06:31-09:35

2 stops22h 04m

£923

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 1/9

08:30-23:03

3 stops19h 33m

Portland

Mon 8/9

10:39-09:35

3 stops17h 56m

£1,555

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 21/8

07:45-11:53

3 stops57h 08m

£554

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 21/8

18:45-00:17

2 stops34h 32m

£674

Flights are sorted by cheapest return flights first.

Deals found on 18/7

Showing 1-10 of 14 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 18 July 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.

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 18 July 2025.
Check out reviews from past customers who have flown with Delta, Austrian Airlines, andFinnair 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.
Delta
8.0
Very Good
7,958 reviews
Check prices

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Delta
8.0
Very Good
7,958 reviews
Delta
8.0
Very Good
7,958 reviews
Check prices

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Austrian Airlines
7.6
Good
817 reviews
Delta
8.0
Very Good
7,958 reviews
Check prices

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Finnair
7.6
Good
1,316 reviews
Delta
8.0
Very Good
7,958 reviews
Check prices

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
United Airlines
7.4
Good
8,865 reviews
Delta
8.0
Very Good
7,958 reviews
Check prices

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Virgin Atlantic
7.4
Good
655 reviews
Delta
8.0
Very Good
7,958 reviews
Check prices

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.

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.

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

    According to our current data, JetBlue (£557), United Airlines (£562), and Delta (£604) offers the cheapest pricing from London Heathrow Airport to Portland, Maine. Users have found that JetBlue 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 TAP AIR PORTUGAL, with whom users have recently found tickets for as low as £674. However, be on the lookout for offers from JetBlue and Icelandair, 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 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
London City to Boston flights
Stansted 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 18 July 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£384Average£592FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
JetBlueCheapest£399Average£604FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
Virgin AtlanticCheapest£470Average£644FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
FinnairCheapest£473Average£595FlexibilityNo cancel feeOn-time76%
Search Finnair flights
KLMCheapest£483Average£621FlexibilityNo cancel feeOn-time75%
Search KLM flights
LufthansaCheapest£513Average£922FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£557Average£737FlexibilityNo 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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