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 01m.

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 £471.

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 top stopover airport for flights from London Heathrow Airport to Portland, Maine?

New York (JFK) – chosen by Cheapflights users on 46% of one-stop itineraries from London Heathrow Airport to Portland, Maine on Cheapflights.

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

United Airlines and Air Canada can get you from London Heathrow Airport to Portland, Maine in just under 16h 09m. Your travel time can differ by up to 04m. 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 (£384), JetBlue (£399), and Virgin Atlantic (£471) 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.

£396+ Flights from London Heathrow Airport to Portland, Maine

Q: How much does it cost for a return flight from London Heathrow Airport to Portland, Maine?

Airfare is typical for this route at the moment. London Heathrow Airport to Portland, Maine flights typically cost between £521 and £628 in December. The cheapest return flight price found within the last 3 days was £543 on United Airlines (3 Dec-10 Dec).

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 21 October 2025.

Wed 3/1207:30LHR - PWM

2 stops16h 13mUnited Airlines

Wed 10/1215:20PWM - LHR

1 stop10h 00mUnited Airlines

Deal found 19/10£543

Wed 3/1212:00LHR - PWM

2 stops16h 09mAir Canada

Wed 10/1215:20PWM - LHR

2 stops15h 00mAir Canada

Deal found 19/10£545

Fri 21/1109:00LHR - PWM

2 stops30h 04mUnited Airlines

Tue 25/1105:30PWM - LHR

2 stops19h 25mUnited Airlines

Deal found 20/10£569

Thu 4/1208:30LHR - PWM

2 stops17h 47mUnited Airlines

Thu 11/1215:00PWM - LHR

1 stop12h 25mUnited Airlines

Deal found 20/10£573

Thu 4/1208:40LHR - PWM

2 stops18h 43mVirgin Atlantic

Thu 11/1206:08PWM - LHR

2 stops23h 42mVirgin Atlantic

Deal found 20/10£637

Wed 3/1212:00LHR - PWM

2 stops16h 09mMultiple Airlines

Wed 10/1206:00PWM - LHR

3 stops19h 30mMultiple Airlines

Deal found 18/10£648

Wed 3/1206:40LHR - PWM

2 stops22h 19mScandinavian Airlines

Wed 10/1214:34PWM - LHR

3 stops26h 01mScandinavian Airlines

Deal found 19/10£663

Thu 4/1206:40LHR - PWM

2 stops22h 19mScandinavian Airlines

Thu 11/1214:34PWM - LHR

3 stops19h 01mScandinavian Airlines

Deal found 20/10£747

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 21 October 2025.

Wed 3/1207:30LHR - PWM

2 stops16h 13mUnited Airlines

Wed 10/1215:20PWM - LHR

1 stop10h 00mUnited Airlines

Deal found 19/10£543

Wed 3/1212:00LHR - PWM

2 stops16h 09mAir Canada

Wed 10/1215:20PWM - LHR

2 stops15h 00mAir Canada

Deal found 19/10£545

Thu 4/1208:40LHR - PWM

2 stops18h 43mVirgin Atlantic

Thu 11/1206:08PWM - LHR

2 stops23h 42mVirgin Atlantic

Deal found 20/10£637

Wed 3/1212:00LHR - PWM

2 stops16h 09mMultiple Airlines

Wed 10/1206:00PWM - LHR

3 stops19h 30mMultiple Airlines

Deal found 18/10£648

Wed 3/1206:40LHR - PWM

2 stops22h 19mScandinavian Airlines

Wed 10/1214:34PWM - LHR

3 stops26h 01mScandinavian Airlines

Deal found 19/10£663

Fri 21/1109:00LHR - PWM

2 stops30h 04mUnited Airlines

Tue 25/1105:30PWM - LHR

1 stop20h 10mUnited Airlines

Deal found 20/10£569

Thu 4/1208:30LHR - PWM

2 stops17h 47mUnited Airlines

Thu 11/1215:00PWM - LHR

1 stop12h 25mUnited Airlines

Deal found 20/10£573

Thu 4/1206:40LHR - PWM

2 stops22h 19mScandinavian Airlines

Thu 11/1214:34PWM - LHR

3 stops19h 01mScandinavian Airlines

Deal found 20/10£747

Last-minute flights from Heathrow to Portland
Discover last-minute flight deals from Heathrow to Portland. Data last updated 21 October 2025 and is based on user searches.

Sun 2/1118:40LHR - PWM

2 stops34h 25mScandinavian Airlines

Wed 5/1106:50PWM - LHR

2 stops21h 30mScandinavian Airlines

Deal found 20/10£1,028

Sun 2/1113:25LHR - PWM

2 stops29h 11mAir Canada

Tue 4/1106:00PWM - LHR

2 stops20h 10mAir Canada

Deal found 20/10£1,261

Sun 2/1108:00LHR - PWM

1 stop14h 57mMultiple Airlines

Tue 4/1106:00PWM - LHR

2 stops20h 10mMultiple Airlines

Deal found 20/10£1,278

Sun 2/1108:00LHR - PWM

1 stop14h 57mAustrian Airlines

Tue 4/1110:45PWM - LHR

1 stop16h 40mAustrian Airlines

Deal found 20/10£1,381

Sun 2/1116:20LHR - PWM

1 stop12h 39mUnited Airlines

Wed 5/1106:00PWM - LHR

1 stop9h 35mUnited Airlines

Deal found 20/10£1,496

Sun 9/1118:40LHR - PWM

2 stops34h 14mScandinavian Airlines

Wed 12/1114:30PWM - LHR

2 stops20h 30mScandinavian Airlines

Deal found 20/10£1,051

Sun 9/1118:40LHR - PWM

2 stops34h 14mScandinavian Airlines

Tue 11/1106:35PWM - LHR

2 stops21h 45mScandinavian Airlines

Deal found 20/10£1,129

Sun 9/1108:00LHR - PWM

1 stop14h 48mAustrian Airlines

Tue 11/1110:45PWM - LHR

1 stop16h 40mAustrian Airlines

Deal found 20/10£1,307

Sun 9/1106:50LHR - PWM

2 stops16h 07mUnited Airlines

Wed 12/1115:19PWM - LHR

1 stop12h 51mUnited Airlines

Deal found 20/10£1,490

Fri 21/1109:00LHR - PWM

2 stops30h 04mUnited Airlines

Tue 25/1105:30PWM - LHR

1 stop20h 10mUnited Airlines

Deal found 20/10£569

One-way flights from Heathrow to Portland
Search for one-way flight options from Heathrow to Portland. Find affordable one-way fares based on user searches. Data last updated 21 October 2025.

Wed 26/1106:00LHR - PWM

3 stops37h 30mMultiple Airlines

Deal found 20/10£396

Mon 15/1218:30LHR - PWM

3 stops45h 06mMultiple Airlines

Deal found 18/10£466

Mon 24/1113:40LHR - PWM

3 stops49h 56mMultiple Airlines

Deal found 20/10£475

Mon 15/1215:20LHR - PWM

2 stops31h 55mAmerican Airlines

Deal found 18/10£479

Wed 17/1207:20LHR - PWM

2 stops20h 32mAmerican Airlines

Deal found 18/10£487

Mon 15/1212:30LHR - PWM

1 stop14h 53mDelta

Deal found 18/10£501

Tue 25/1106:30LHR - PWM

2 stops22h 24mDelta

Deal found 20/10£511

Mon 24/1111:45LHR - PWM

2 stops17h 09mKLM

Deal found 20/10£514

Tue 25/1113:10LHR - PWM

1 stop14h 44mMultiple Airlines

Deal found 20/10£524

Tue 16/1210:00LHR - PWM

3 stops29h 36mMultiple Airlines

Deal found 18/10£551

Cheap flight deals from Heathrow to Portland

Round-trip from	£543
One-way from	£396
Popular in	December
Cheapest in	February
Average price	£592

United Airlines
3/12-10/12
3 total stops
26h 13m total
London to Portland

Search Deals

26/11
3 total stops
37h 30m total
London to Portland

Search Deals

Highest demand for flights based on searches. 6% potential increase in price (£30 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

Wed 3/12

07:30-18:43

2 stops16h 13m

Portland

Wed 10/12

15:20-06:20

1 stop10h 00m

£543

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 3/12

12:00-23:09

2 stops16h 09m

Portland

Wed 10/12

15:20-11:20

2 stops15h 00m

£545

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 21/11

09:00-10:04

2 stops30h 04m

Portland

Tue 25/11

05:30-06:40

1 stop20h 10m

£569

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 4/12

08:30-21:17

2 stops17h 47m

Portland

Thu 11/12

15:00-08:25

1 stop12h 25m

£573

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 4/12

08:40-22:23

2 stops18h 43m

Portland

Thu 11/12

06:08-10:50

2 stops23h 42m

£637

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 3/12

12:00-23:09

2 stops16h 09m

Portland

Wed 10/12

06:00-06:30

3 stops19h 30m

£648

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 3/12

06:40-23:59

2 stops22h 19m

Portland

Wed 10/12

14:34-21:35

3 stops26h 01m

£663

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 4/12

06:40-23:59

2 stops22h 19m

Portland

Thu 11/12

14:34-14:35

3 stops19h 01m

£747

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 26/11

06:00-14:30

3 stops37h 30m

£396

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 15/12

18:30-10:36

3 stops45h 06m

£466

Flights are sorted by cheapest return flights first.

Deals found on 20/10

Showing 1-10 of 19 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 £316). Flying from London Heathrow Airport to Portland, Maine in July is currently the most expensive (average of £373). 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.

How much does it cost for a return flight 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.

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

1,333 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

8,988 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

2,909 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 and Air Canada can get you from London Heathrow Airport to Portland, Maine in just under 16h 09m. Your travel time can differ by up to 04m. 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 (£384), JetBlue (£399), and Virgin Atlantic (£471) 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 £316). Flying from London Heathrow Airport to Portland, Maine in July is currently the most expensive (average of £373). 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

Luton to Boston flights

Stansted 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£384	Average£592	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
JetBlue	Cheapest£399	Average£541	FlexibilityNo cancel fee	On-time62%	Search JetBlue flights
Virgin Atlantic	Cheapest£471	Average£641	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Finnair	Cheapest£472	Average£616	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
KLM	Cheapest£500	Average£620	FlexibilityNo cancel fee	On-time75%	Search KLM flights
United Airlines	Cheapest£556	Average£725	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights

Fly with Cheapflights

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 £396

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 26/11. 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 21 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 21 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?

How much does it cost for a return flight from London Heathrow Airport to Portland, Maine?

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 21 October 2025.