£364 Cheap Flights from London (LHR) to Portland (PWM)

View £364 flight on Tue, 6 Oct 2026Opens in a new window

Popular airlines from Heathrow Airport (LHR) to Portland Intl. Jetport Airport (PWM)

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Cheap Flights from London (LHR) to Portland (PWM)

Prices were available within the past 7 days and start at £364 for one-way flights and £537 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

JetBlue Airways
Tue, 22 Sept - Mon, 5 Oct
LHR
London
PWM
Portland
£537 Return, found 14 hours ago
£537
Return
found 14 hours ago
Select JetBlue Airways flight, departing Tue, 22 Sept from London to Portland, returning Mon, 5 Oct, priced at £537 found 14 hours ago
JetBlue Airways
Wed, 23 Sept - Mon, 5 Oct
LHR
London
PWM
Portland
£541 Return, found 14 hours ago
£541
Return
found 14 hours ago
Select JetBlue Airways flight, departing Wed, 23 Sept from London to Portland, returning Mon, 5 Oct, priced at £541 found 14 hours ago
JetBlue Airways
Tue, 29 Sept - Mon, 12 Oct
LHR
London
PWM
Portland
£551 Return, found 14 hours ago
£551
Return
found 14 hours ago
Select JetBlue Airways flight, departing Tue, 29 Sept from London to Portland, returning Mon, 12 Oct, priced at £551 found 14 hours ago
JetBlue Airways
Wed, 20 May - Thu, 4 Jun
LHR
London
PWM
Portland
£558 Return, found 1 day ago
£558
Return
found 1 day ago
Select JetBlue Airways flight, departing Wed, 20 May from London to Portland, returning Thu, 4 Jun, priced at £558 found 1 day ago
JetBlue Airways
Wed, 3 Jun - Wed, 10 Jun
LHR
London
PWM
Portland
£558 Return, found 10 hours ago
£558
Return
found 10 hours ago
Select JetBlue Airways flight, departing Wed, 3 Jun from London to Portland, returning Wed, 10 Jun, priced at £558 found 10 hours ago
JetBlue Airways
Wed, 3 Jun - Thu, 4 Jun
LHR
London
PWM
Portland
£559 Return, found 10 hours ago
£559
Return
found 10 hours ago
Select JetBlue Airways flight, departing Wed, 3 Jun from London to Portland, returning Thu, 4 Jun, priced at £559 found 10 hours ago
Austrian Airlines
Tue, 9 Feb - Tue, 16 Feb
LHR
London
PWM
Portland
£666 Return, found 5 days ago
£666
Return
found 5 days ago
Select Austrian Airlines flight, departing Tue, 9 Feb from London to Portland, returning Tue, 16 Feb, priced at £666 found 5 days ago
Air Canada
Tue, 9 Feb - Tue, 16 Feb
LHR
London
PWM
Portland
£692 Return, found 5 days ago
£692
Return
found 5 days ago
Select Air Canada flight, departing Tue, 9 Feb from London to Portland, returning Tue, 16 Feb, priced at £692 found 5 days ago
United
Tue, 22 Sept - Tue, 29 Sept
LHR
London
PWM
Portland
£709 Return, found 2 days ago
£709
Return
found 2 days ago
Select United flight, departing Tue, 22 Sept from London to Portland, returning Tue, 29 Sept, priced at £709 found 2 days ago
American Airlines
Sun, 13 Sept - Thu, 17 Sept
LHR
London
PWM
Portland
£728 Return, found 2 days ago
£728
Return
found 2 days ago
Select American Airlines flight, departing Sun, 13 Sept from London to Portland, returning Thu, 17 Sept, priced at £728 found 2 days ago

Alternative airports near Portland

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Portland Intl. Jetport PWM. Cheapest and Closest option available. Average driving time to city centre is 8 minutes. Flights from £803
PWM
Portland Intl. Jetport
CheapestClosest
Average driving time to city centre8 min
Flights from £803

Frequently asked questions

How much is a flight from London Heathrow to Portland Intl. Jetport?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price available for a round-trip flight from LHR to Portland Intl. Jetport was £537. Cheap tickets don't stick around for long, so make sure you book yours ASAP. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from LHR to Portland Intl. Jetport?
We understand that things crop up unexpectedly, so we've made it as easy as possible for you to cancel your flight online. Just visit the Customer Service Portal and follow the instructions.
How do I find cheap flights from Heathrow Airport to PWM that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for London Heathrow to Portland Intl. Jetport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Heathrow Airport to Portland Intl. Jetport?
The distance is around 5,100 kilometres. Earplugs? Check. Toothbrush? Check. You'd be wise to pack all the essentials for this long-haul Hounslow to Portland flight.
Which airlines fly direct from Heathrow Airport (LHR) to PWM?
If you want to fly straight from Heathrow Airport to Portland Intl. Jetport Airport (PWM), you'll need to book a flight with at least one stop. Unfortunately, there aren't any airlines that fly directly on this route.
Are Heathrow Airport to Portland Intl. Jetport Airport (PWM) flight tickets cheaper when they're purchased at the last minute?
Flight prices from London Heathrow to Portland Intl. Jetport Airport (PWM) are available up to a year prior to departure on Expedia. And although you may occasionally nab a great last-minute deal, it's not something you should bank on. Also, booking your flights ahead of time means you'll have more options — and you can avoid ending up with the dreaded middle seat! We regularly update our fares to bring you the best bargains, so keep checking in for all the latest specials.

Frequently asked questions

How do I find cheap flights from London (LHR-Heathrow) to Portland, ME (PWM-Portland Intl. Jetport)?
To find a cheap flight from London (LHR-Heathrow) to Portland, ME (PWM-Portland Intl. Jetport), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from London (LHR-Heathrow) to Portland, ME (PWM-Portland Intl. Jetport)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from London (LHR-Heathrow) to Portland, ME (PWM-Portland Intl. Jetport)?
There are approximately 77 connecting flights per day from London (LHR-Heathrow) to Portland, ME (PWM-Portland Intl. Jetport). Some common connection points include Pearson Intl. (YYZ), John F. Kennedy Intl. (JFK), and Unknown (DUB).
What is the earliest flight from London (LHR-Heathrow) to Portland, ME (PWM-Portland Intl. Jetport)?
The earliest flight from London Heathrow (LHR) to Portland Intl. Jetport (PWM) typically departs at approximately 6:00 AM local time. This service is operated by SWISS and United Airlines. This is a seasonal service active in August. An early departure like this can help you maximise your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from London (LHR-Heathrow) to Portland, ME (PWM-Portland Intl. Jetport)?
You'll typically find the most flights from London Heathrow (LHR) to Portland Intl. Jetport (PWM) on a Thursday, with around 61 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include Delta Air Lines, British Airways, and Virgin Atlantic.
What are the most popular departure times for flights from London (LHR-Heathrow) to Portland, ME (PWM-Portland Intl. Jetport)?
The most popular departure times for flights from London Heathrow (LHR) to Portland Intl. Jetport (PWM) are between 12pm and 3pm. This accounts for around 33% of total traffic. Many major carriers, including Delta Air Lines, United Airlines and American Airlines, offer flights during this window. This timing works well if you prefer to start your journey around midday.
How long does it take to fly from London (LHR-Heathrow) to Portland, ME (PWM-Portland Intl. Jetport)?
A flight from LHR to PWM with a layover takes around 13 hours 20 minutes, with the route covering approximately 3,176 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from London (LHR-Heathrow) to Portland, ME (PWM-Portland Intl. Jetport)?
Select the "Business class" and "First class" filters when looking for LHR to PWM flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a London (LHR-Heathrow) to Portland, ME (PWM-Portland Intl. Jetport) flight with Expedia?
It's easy to earn miles on a London (LHR-Heathrow) to Portland, ME (PWM-Portland Intl. Jetport) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia. *Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Portland from Heathrow (LHR)?
From Heathrow (LHR), you can fly into Portland Intl. (PDX) and Portland Intl. Jetport (PWM) in Portland. Some flights may connect through major hubs like Frankfurt Intl. (FRA), Roissy-Charles de Gaulle (CDG), Logan Intl. (BOS) before reaching Portland. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from London (LHR-Heathrow) to Portland, ME (PWM-Portland Intl. Jetport) at the last minute?
Typically, booking a last minute flight from London (LHR-Heathrow) to Portland, ME (PWM-Portland Intl. Jetport) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a London (LHR-Heathrow) to Portland, ME (PWM-Portland Intl. Jetport) flight and hotel package?
Securing a London (LHR-Heathrow) to Portland, ME (PWM-Portland Intl. Jetport) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from London (LHR-Heathrow) to Portland, ME (PWM-Portland Intl. Jetport)?
If you booked your London (LHR-Heathrow) to Portland, ME (PWM-Portland Intl. Jetport) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Heathrow
Destination airport
Portland Intl. Jetport
Airlines serving
Air Canada, Air France, American Airlines, Austrian Airlines, Delta, JetBlue Airways, KLM, Scandinavian Airlines, TAP Portugal, Turkish Airlines, United, Virgin Atlantic
Return price
£537
Distance
5080 km

Book with confidence

Compare flights from London to Portland easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from London to Portland. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Portland Intl. Jetport in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Heathrow to Portland Intl. Jetport.  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Heathrow (LHR) to Portland Intl. Jetport (PWM)

The easiest way to view the best deals on flights from London to Portland today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Heathrow to Portland Intl. Jetport start at just £537 and range up to £728.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near London and Portland
  • booking your flight during September, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your London to Portland flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Heathrow to Portland Intl. Jetport for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from London to Portland easily and book with confidence

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