PWM - LHR

£260 Find Cheap Flights from Portland to London Heathrow Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Portland to Heathrow departing on 15/1. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to London Heathrow Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Portland to London, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Portland to London, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Portland to Heathrow (PWM-LHR)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Portland to Heathrow that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Portland to Heathrow

Sun, 9 Nov - Tue, 18 Nov
Delta Logo
06:00 - 06:20PWM-LHR
19h 20m1 stop
Delta Logo
11:45 - 23:54LHR-PWM
17h 09m2 stops
£450Delta
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Sun, 9 Nov - Tue, 18 Nov
Delta Logo
16:40 - 11:25PWM-LHR
13h 45m2 stops
Delta Logo
10:00 - 23:19LHR-PWM
18h 19m2 stops
£453Delta
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Tue, 11 Nov - Tue, 18 Nov
Delta Logo
11:25 - 06:20PWM-LHR
13h 55m1 stop
Delta Logo
16:10 - 23:54LHR-PWM
12h 44m1 stop
£455Delta
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Tue, 11 Nov - Tue, 18 Nov
American Airlines Logo
06:00 - 06:35PWM-LHR
19h 35m1 stop
American Airlines Logo
07:50 - 18:10LHR-PWM
15h 20m2 stops
£468American Airlines
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Tue, 11 Nov - Tue, 18 Nov
Air Canada Logo
06:00 - 11:20PWM-LHR
24h 20m2 stops
Air Canada Logo
13:25 - 17:48LHR-PWM
33h 23m2 stops
£471Air Canada
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Tue, 11 Nov - Tue, 18 Nov
United Airlines Logo
14:20 - 08:25PWM-LHR
13h 05m2 stops
United Airlines Logo
06:50 - 17:48LHR-PWM
15h 58m2 stops
£474United Airlines
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Mon, 10 Nov - Sun, 16 Nov
Air Canada Logo
06:00 - 20:35PWM-LHR
33h 35m2 stops
Air Canada Logo
09:00 - 17:48LHR-PWM
37h 48m2 stops
£513Air Canada
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Fri, 12 Dec - Fri, 19 Dec
United Airlines Logo
19:46 - 11:05PWM-LHR
10h 19m1 stop
United Airlines Logo
16:20 - 23:59LHR-PWM
12h 39m1 stop
£530United Airlines
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Sun, 12 Apr - Wed, 22 Apr
JetBlue Logo
06:00 - 20:45PWM-LHR
9h 45m1 stop
JetBlue Logo
11:55 - 23:36LHR-PWM
16h 41m1 stop
£559JetBlue
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Sun, 12 Apr - Mon, 27 Apr
JetBlue Logo
06:00 - 20:45PWM-LHR
9h 45m1 stop
JetBlue Logo
11:55 - 23:36LHR-PWM
16h 41m1 stop
£601JetBlue
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Everything you should know

When to travel
May
Cheapest • 29% price drop
September
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest return fare
£450
Overall average: £622
Delta
Sun 9/11Tue 18/11
PWM - LHR • 1 stop
Cheapest one-way flight
£260
Scandinavian Airlines
Thu 15/1
PWM - LHR • 2 stops
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Heathrow!
Booking Insights

KAYAK's insights & trends for Portland to Heathrow flights

Get data-powered insights and trends into flights from Portland to Heathrow to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Portland to London Heathrow Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Portland to London Heathrow Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Portland to London Heathrow Airport is May, where tickets cost £528 (return) on average. On the other hand, the most expensive months are June and December, where the average cost of round-trip tickets is £1,108 and £1,094 respectively.

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Good to know - Cheap tickets from Portland to London Heathrow Airport

Low seasonJanuary
Cheapest flight£260
Best time to beat the crowds (17% less expensive on average)
Most popular time to fly and prices are also 1% lower on average.
Flight from Portland to London Heathrow Airport

When to book flights from Portland to Heathrow

Are your dates flexible? Find out the best times to travel from Portland to Heathrow based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Portland to London Heathrow Airport flights

  • What is the cheapest flight from Portland to London Heathrow Airport?

    In the last 3 days, the lowest price for a flight from Portland to London Heathrow Airport was £260 for a one-way ticket and £450 for a return.

  • Which airports will I be using when flying from Portland to London Heathrow Airport?

    Portland and London Heathrow Airport are both served by 1 main airport. You will leave Portland from Portland and will be arriving at London Heathrow.

  • Which aircraft models fly most regularly from Portland to London Heathrow Airport?

    We unfortunately don’t have that data for this specific route.

  • How does KAYAK find such low prices on flights from Portland to London Heathrow Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Portland to London Heathrow Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Portland to London Heathrow Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London Heathrow Airport from Portland is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Portland to London Heathrow Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to London Heathrow Airport with an airline and back to Portland with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Portland to London Heathrow Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London Heathrow Airport from Portland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight from Portland to Heathrow

Information on your arrival and departure airports

Portland (PWM)
Heathrow (LHR)

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