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£344 Cheap Flights from London (LHR) to Portland (PWM)

View £344 flight on Thu, 3 Sept 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 £344 for one-way flights and £515 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

JetBlue Airways
Tue, 8 Sept - Tue, 29 Sept
LHR
London
PWM
Portland
£515 Return, found 2 days ago
£515
Return
found 2 days ago
Select JetBlue Airways flight, departing Tue, 8 Sept from London to Portland, returning Tue, 29 Sept, priced at £515 found 2 days ago
JetBlue Airways
Tue, 22 Sept - Tue, 29 Sept
LHR
London
PWM
Portland
£520 Return, found 2 days ago
£520
Return
found 2 days ago
Select JetBlue Airways flight, departing Tue, 22 Sept from London to Portland, returning Tue, 29 Sept, priced at £520 found 2 days ago
JetBlue Airways
Thu, 3 Sept - Wed, 9 Sept
LHR
London
PWM
Portland
£535 Return, found 13 hours ago
£535
Return
found 13 hours ago
Select JetBlue Airways flight, departing Thu, 3 Sept from London to Portland, returning Wed, 9 Sept, priced at £535 found 13 hours ago
JetBlue Airways
Tue, 22 Sept - Tue, 29 Sept
LHR
London
PWM
Portland
£542 Return, found 2 days ago
£542
Return
found 2 days ago
Select JetBlue Airways flight, departing Tue, 22 Sept from London to Portland, returning Tue, 29 Sept, priced at £542 found 2 days ago
JetBlue Airways
Sun, 6 Sept - Sun, 27 Sept
LHR
London
PWM
Portland
£545 Return, found 3 days ago
£545
Return
found 3 days ago
Select JetBlue Airways flight, departing Sun, 6 Sept from London to Portland, returning Sun, 27 Sept, priced at £545 found 3 days ago
JetBlue Airways
Tue, 22 Sept - Sun, 4 Oct
LHR
London
PWM
Portland
£550 Return, found 4 days ago
£550
Return
found 4 days ago
Select JetBlue Airways flight, departing Tue, 22 Sept from London to Portland, returning Sun, 4 Oct, priced at £550 found 4 days ago
Scandinavian Airlines
Sat, 30 Jan - Sat, 6 Feb
LHR
London
PWM
Portland
£582 Return, found 5 days ago
£582
Return
found 5 days ago
Select Scandinavian Airlines flight, departing Sat, 30 Jan from London to Portland, returning Sat, 6 Feb, priced at £582 found 5 days ago
Austrian Airlines
Mon, 21 Sept - Wed, 30 Sept
LHR
London
PWM
Portland
£667 Return, found 3 days ago
£667
Return
found 3 days ago
Select Austrian Airlines flight, departing Mon, 21 Sept from London to Portland, returning Wed, 30 Sept, priced at £667 found 3 days ago
United
Tue, 19 Jan - Mon, 1 Feb
LHR
London
PWM
Portland
£677 Return, found 1 day ago
£677
Return
found 1 day ago
Select United flight, departing Tue, 19 Jan from London to Portland, returning Mon, 1 Feb, priced at £677 found 1 day ago
Air Canada
Mon, 21 Sept - Sun, 27 Sept
LHR
London
PWM
Portland
£693 Return, found 2 days ago
£693
Return
found 2 days ago
Select Air Canada flight, departing Mon, 21 Sept from London to Portland, returning Sun, 27 Sept, priced at £693 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 £756
PWM
Portland Intl. Jetport
CheapestClosest
Average driving time to city centre8 min
Flights from £756

Frequently asked questions

How much does a flight from London (LHR-Heathrow) to Portland, ME (PWM-Portland Intl. Jetport) cost?
You can find cheap one-way flights from £344 and cheap return flights from £515 LHR to PWM with Expedia. Return flights often range between £686 and £2961. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when LHR to PWM ticket fares go up or down.
What is the cheapest month to fly from London (LHR-Heathrow) to Portland, ME (PWM-Portland Intl. Jetport)?
The cheapest months to fly from LHR to PWM are typically during off-peak season when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you are able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from London (LHR-Heathrow) to Portland, ME (PWM-Portland Intl. Jetport)?
Enter LHR to PWM and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
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 76 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 Pierre Elliott Trudeau Intl. (YUL).
What is the earliest flight from London (LHR-Heathrow) to Portland, ME (PWM-Portland Intl. Jetport)?
The earliest flight you can typically find from London Heathrow (LHR) to Portland, ME (PWM-Portland Intl. Jetport) departs around 6:00 AM. This service is offered by airlines such as Air Baltic, Swiss International Air Lines, and United. Please note that this is a seasonal service, active only in October. An early departure like this can be great if you want to maximise your time upon arrival in Portland. 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, ME (PWM) on a Thursday, with around 61 flights available. This gives you a good selection of options for your journey. Major airlines on this route include British Airways, Delta, and United. Looking at the week, Thursday offers notably more flight options compared to other days, ensuring you have plenty of choices.
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. Many major carriers, including American Airlines, Delta and British Airways, offer flights during this window. Many travellers prefer this time as it allows for a relaxed morning before heading to the airport, and you'll arrive in Portland in the evening.
How long does it take to fly from London (LHR-Heathrow) to Portland, ME (PWM-Portland Intl. Jetport)?
There are no nonstop flights from London (LHR-Heathrow) to Portland, ME (PWM-Portland Intl. Jetport). For flights with one stop, you can expect the journey to take around 12 hours 48 minutes. If your flight has two or more stops, the travel time will typically be longer, averaging about 19 hours. The distance covered on this route is approximately 5,111 kilometers. Keep in mind that actual flight times can vary due to factors like layover duration, routing, and weather conditions.
Can you fly business or first class from London (LHR-Heathrow) to Portland, ME (PWM-Portland Intl. Jetport)?
You can fly business class or first class between LHR and PWM. Airlines that offer business class service on this route include:

  • SAS
  • Delta
  • Air Canada
  • Austrian Airlines

First class cabins are available on British Airways and American Airlines.
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, ME (PWM) from London (LHR)?
If you're planning to travel to Portland from Heathrow (LHR), you can fly directly into Portland Intl. Jetport (PWM). Some flights may connect through major hubs like Schiphol (AMS), Roissy-Charles de Gaulle (CDG), or Pearson Intl. (YYZ) 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, United, Virgin Atlantic
Return price
£514
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 £515 and range up to £693.  

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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*Available to Expedia members.