Which airport typically offers the quickest stopover for flights from London Heathrow Airport to Portland, Maine?

Flights via Chicago (ORD) offer the fastest connection on this route, with an average stopover time of 1h 10m.

What’s the fastest stopover option from London Heathrow Airport to Portland, Maine?

Flights via Newark (EWR) have the shortest average one-way travel time for one-stop routes: 12h 02m.

What’s the top stopover airport for flights from London Heathrow Airport to Portland, Maine?

New York (JFK) – chosen by Cheapflights users on 45% of one-stop itineraries from London Heathrow Airport to Portland, Maine on Cheapflights.

What’s the cheapest stopover airport for flights from London Heathrow Airport to Portland, Maine?

Chicago (ORD) is the most affordable one-stop option, with an average return flight price of £473.

How long is the flight from London Heathrow Airport to Portland, Maine?

United Airlines, Air Canada, and Virgin Atlantic can get you from London Heathrow Airport to Portland, Maine in just under 20h 53m. Your travel time can differ by up to 22h 24m. The distance from London Heathrow Airport to Portland, Maine is about 3173 mi. This flight may include one or multiple stops.

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

According to our current data, Icelandair (£385), JetBlue (£400), and Virgin Atlantic (£473) offers the cheapest pricing from London Heathrow Airport to Portland, Maine. Users have found that Icelandair is 40% cheaper than the other options available to this destination.

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.

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).

What are the most popular airlines that fly from London Heathrow Airport to Portland, Maine?

United Airlines, JetBlue and Virgin Atlantic are the most popular airlines when flying from London Heathrow Airport to Portland, Maine.

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 6 different airlines.

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.

£539+ Flights from London Heathrow Airport to Portland, Maine

Find flight deals from Heathrow to Portland

Enter your travel dates to find the best prices.

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 16 October 2025.

Thu 11/1206:35LHR - PWM

2 stops21h 34mUnited Airlines

Tue 16/1206:00PWM - LHR

1 stop10h 20mUnited Airlines

Deal found 16/10£551

Thu 13/1111:10LHR - PWM

2 stops17h 07mUnited Airlines

Fri 28/1115:20PWM - LHR

2 stops14h 55mUnited Airlines

Deal found 14/10£580

Thu 13/1108:00LHR - PWM

1 stop14h 48mAustrian Airlines

Fri 28/1110:45PWM - LHR

1 stop17h 25mAustrian Airlines

Deal found 14/10£592

Sun 30/1109:00LHR - PWM

2 stops43h 17mAir Canada

Sun 7/1206:00PWM - LHR

2 stops44h 10mAir Canada

Deal found 16/10£628

Thu 11/1206:30LHR - PWM

2 stops20h 53mVirgin Atlantic

Tue 16/1206:03PWM - LHR

2 stops23h 47mVirgin Atlantic

Deal found 16/10£637

Sun 30/1109:00LHR - PWM

2 stops43h 17mMultiple Airlines

Sun 7/1210:35PWM - LHR

1 stop17h 35mMultiple Airlines

Deal found 16/10£642

Fri 14/1110:00LHR - PWM

2 stops18h 54mDelta

Sat 22/1106:35PWM - LHR

1 stop19h 20mDelta

Deal found 15/10£664

Fri 14/1110:15LHR - PWM

1 stop12h 55mMultiple Airlines

Sat 22/1115:37PWM - LHR

1 stop11h 13mMultiple Airlines

Deal found 15/10£669

Fri 14/1113:25LHR - PWM

2 stops38h 52mAir Canada

Sat 22/1119:44PWM - LHR

2 stops30h 26mAir Canada

Deal found 15/10£673

Sat 29/1115:10LHR - PWM

1 stop13h 07mUnited Airlines

Sat 6/1206:00PWM - LHR

1 stop10h 20mUnited Airlines

Deal found 15/10£821

Best flights from Heathrow to Portland
Discover carefully curated flight deals from Heathrow to Portland that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 16 October 2025.

Thu 11/1206:35LHR - PWM

2 stops21h 34mUnited Airlines

Tue 16/1206:00PWM - LHR

1 stop10h 20mUnited Airlines

Deal found 16/10£551

Sun 30/1109:00LHR - PWM

2 stops43h 17mAir Canada

Sun 7/1206:00PWM - LHR

2 stops44h 10mAir Canada

Deal found 16/10£628

Thu 11/1206:30LHR - PWM

2 stops20h 53mVirgin Atlantic

Tue 16/1206:03PWM - LHR

2 stops23h 47mVirgin Atlantic

Deal found 16/10£637

Sun 30/1109:00LHR - PWM

2 stops43h 17mMultiple Airlines

Sun 7/1210:35PWM - LHR

1 stop17h 35mMultiple Airlines

Deal found 16/10£642

Fri 14/1110:00LHR - PWM

2 stops18h 54mDelta

Sat 22/1106:35PWM - LHR

1 stop19h 20mDelta

Deal found 15/10£664

Thu 13/1111:10LHR - PWM

2 stops17h 49mUnited Airlines

Fri 28/1119:44PWM - LHR

1 stop10h 21mUnited Airlines

Deal found 14/10£580

Sat 14/320:00LHR - PWM

2 stops29h 59mVirgin Atlantic

Thu 26/305:30PWM - LHR

1 stop23h 30mVirgin Atlantic

Deal found 14/10£655

Fri 14/1110:15LHR - PWM

1 stop12h 55mMultiple Airlines

Sat 22/1115:37PWM - LHR

1 stop11h 13mMultiple Airlines

Deal found 15/10£669

Fri 14/1113:25LHR - PWM

2 stops38h 52mAir Canada

Sat 22/1119:44PWM - LHR

2 stops30h 26mAir Canada

Deal found 15/10£673

Sat 29/1115:10LHR - PWM

1 stop13h 07mUnited Airlines

Sat 6/1206:00PWM - LHR

1 stop10h 20mUnited Airlines

Deal found 15/10£821

Last-minute flights from Heathrow to Portland
Discover last-minute flight deals from Heathrow to Portland. Data last updated 16 October 2025 and is based on user searches.

Fri 24/1008:40LHR - PWM

2 stops16h 01mUnited Airlines

Sun 26/1016:53PWM - LHR

1 stop33h 02mUnited Airlines

Deal found 15/10£1,018

Thu 13/1111:10LHR - PWM

2 stops17h 49mUnited Airlines

Fri 28/1119:44PWM - LHR

1 stop10h 21mUnited Airlines

Deal found 14/10£580

Thu 13/1108:00LHR - PWM

1 stop14h 48mAustrian Airlines

Fri 28/1110:45PWM - LHR

1 stop17h 25mAustrian Airlines

Deal found 14/10£592

Thu 13/1106:40LHR - PWM

2 stops22h 14mScandinavian Airlines

Fri 28/1106:35PWM - LHR

3 stops28h 25mScandinavian Airlines

Deal found 14/10£970

Fri 14/1110:00LHR - PWM

2 stops18h 54mDelta

Sat 22/1106:35PWM - LHR

1 stop19h 20mDelta

Deal found 15/10£664

Fri 14/1110:15LHR - PWM

1 stop12h 55mMultiple Airlines

Sat 22/1115:37PWM - LHR

1 stop11h 13mMultiple Airlines

Deal found 15/10£669

Fri 14/1113:25LHR - PWM

2 stops38h 52mAir Canada

Sat 22/1119:44PWM - LHR

2 stops30h 26mAir Canada

Deal found 15/10£673

Sat 29/1115:10LHR - PWM

1 stop13h 07mUnited Airlines

Sat 6/1206:00PWM - LHR

1 stop10h 20mUnited Airlines

Deal found 15/10£821

Sat 29/1109:00LHR - PWM

3 stops19h 17mMultiple Airlines

Sat 6/1215:00PWM - LHR

2 stops15h 20mMultiple Airlines

Deal found 15/10£844

Cheap flight deals from Heathrow to Portland

Round-trip from	£551
One-way from	£539
Popular in	December
Cheapest in	February
Average price	£594

United Airlines
11/12-16/12
3 total stops
31h 54m total
London to Portland

Search Deals

31/10
3 total stops
46h 55m total
London to Portland

Search Deals

Highest demand for flights based on searches. 5% potential increase in price (£31 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease (£21 potential savings vs. average return price).

Search Deals

Average for round-trip flights in October 2025

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from London Heathrow Airport to Portland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 11/12

06:35-23:09

2 stops21h 34m

Portland

Tue 16/12

06:00-21:20

1 stop10h 20m

£551

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 13/11

11:10-23:59

2 stops17h 49m

Portland

Fri 28/11

19:44-11:05

1 stop10h 21m

£580

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sun 30/11

09:00-23:17

2 stops43h 17m

Portland

Sun 7/12

06:00-07:10

2 stops44h 10m

£628

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 11/12

06:30-22:23

2 stops20h 53m

Portland

Tue 16/12

06:03-10:50

2 stops23h 47m

£637

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sun 30/11

09:00-23:17

2 stops43h 17m

Portland

Sun 7/12

10:35-09:10

1 stop17h 35m

£642

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sat 14/3

20:00-21:59

2 stops29h 59m

Portland

Thu 26/3

05:30-09:00

1 stop23h 30m

£655

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 14/11

10:00-23:54

2 stops18h 54m

Portland

Sat 22/11

06:35-06:55

1 stop19h 20m

£664

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 14/11

10:15-18:10

1 stop12h 55m

Portland

Sat 22/11

15:37-07:50

1 stop11h 13m

£669

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 14/11

13:25-23:17

2 stops38h 52m

Portland

Sat 22/11

19:44-07:10

2 stops30h 26m

£673

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sat 29/11

15:10-23:17

1 stop13h 07m

Portland

Sat 6/12

06:00-21:20

1 stop10h 20m

£821

Flights are sorted by cheapest return flights first.

Deals found on 14/10

Showing 1-10 of 12 results

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

Prices

What is the cheapest month to book a flight from London Heathrow Airport to Portland, Maine?

Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Portland, Maine (average of £317). Flying from London Heathrow Airport to Portland, Maine in July is currently the most expensive (average of £375). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from LHR to PWM?

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 33% versus a flight at midday.

Reviews of airlines servicing Portland

Check out reviews from past customers who have flown with KLM, Finnair, andVirgin Atlantic 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.

KLM

7.7

Good

1,404 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

KLM

7.7

Good

1,404 reviews

KLM

7.7

Good

1,404 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

Finnair

7.6

Good

1,332 reviews

KLM

7.7

Good

1,404 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

Virgin Atlantic

7.5

Good

670 reviews

KLM

7.7

Good

1,404 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

United Airlines

7.4

Good

8,982 reviews

KLM

7.7

Good

1,404 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

JetBlue

7.2

Good

2,908 reviews

KLM

7.7

Good

1,404 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

Related info for your journey

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 6 different airlines.
How long is the flight from London Heathrow Airport to Portland, Maine?
United Airlines, Air Canada, and Virgin Atlantic can get you from London Heathrow Airport to Portland, Maine in just under 20h 53m. Your travel time can differ by up to 22h 24m. The distance from London Heathrow Airport to Portland, Maine is about 3173 mi. This flight may include one or multiple stops.
What are the cheapest airlines flying from London Heathrow Airport to Portland, Maine round-trip?
According to our current data, Icelandair (£385), JetBlue (£400), and Virgin Atlantic (£473) offers the cheapest pricing from London Heathrow Airport to Portland, Maine. Users have found that Icelandair is 40% cheaper than the other options available to this destination.
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.
What is the cheapest month to book a flight from London Heathrow Airport to Portland, Maine?
Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Portland, Maine (average of £317). Flying from London Heathrow Airport to Portland, Maine in July is currently the most expensive (average of £375). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Bath

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Alternative routes for Heathrow to Portland

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 6 airlines flying from Heathrow to Portland

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest£385	Average£594	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
JetBlue	Cheapest£400	Average£544	FlexibilityNo cancel fee	On-time62%	Search JetBlue flights
Virgin Atlantic	Cheapest£473	Average£643	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Finnair	Cheapest£474	Average£618	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
KLM	Cheapest£502	Average£623	FlexibilityNo cancel fee	On-time75%	Search KLM flights
United Airlines	Cheapest£559	Average£739	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights

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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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Cheap flights from London Heathrow Airport to Portland, Maine from £539

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 31/10. Fares are subject to change and may not be available on all flights or dates of travel.

Find flight deals from Heathrow to Portland

Cheapest flights from Heathrow to PortlandExplore 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 16 October 2025.

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 16 October 2025.

Cheap flight deals from Heathrow to Portland

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from London Heathrow Airport to Portland that are best for you.

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.

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to Portland

What is the cheapest month to book a flight from London Heathrow Airport to Portland, Maine?

What is the cheapest time of day to fly from LHR to PWM?

What’s the top stopover airport for flights from London Heathrow Airport to Portland, Maine?

What’s the fastest stopover option from London Heathrow Airport to Portland, Maine?

What’s the fastest stopover option from London Heathrow Airport to Portland, Maine?

Which airport typically offers the quickest stopover for flights from London Heathrow Airport to Portland, Maine?

Reviews of airlines servicing Portland

Check out reviews from past customers who have flown with KLM, Finnair, andVirgin Atlantic 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.

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?

How long is the flight from London Heathrow Airport to Portland, Maine?

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

Can I find deals for flights from Heathrow to Portland that include hotel bookings?

How can I find direct flights from Heathrow to Portland?

Can I find deals for business class flights from Heathrow to Portland?

What is the cheapest month to book a flight from London Heathrow Airport to Portland, Maine?

Travelling to a place near Portland?

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.

Top 6 airlines flying from Heathrow to Portland

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?

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Portland?

Can Cheapflights find flights from Heathrow to Portland with no change fees?

Can Cheapflights notify me if prices for flights from Heathrow to Portland become cheaper?

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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 16 October 2025.