LHR - PWM

$587 Find Cheap Flights from London to Portland

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from London to Portland departing on 5/1. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Portland

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from London to Portland 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.

Recent round-trip flight deals from London to Portland

KAYAK's recommended round-trip deals from the most popular airlines that fly from London to Portland.
Discover the best prices for you by selecting your travel dates on KAYAK.
Choose your dates
Icelandair Logo
8:15 am - 2:25 pmLHR-PWM
11h 10m1 stop
Icelandair Logo
3:35 pm - 9:30 amPWM-LHR
12h 55m1 stop
$587Icelandair
Find Deal
Thu, May 1 - Thu, May 8
Icelandair Logo
8:25 am - 9:57 pmLHR-PWM
18h 32m2 stops
Icelandair Logo
3:35 pm - 9:30 amPWM-LHR
12h 55m1 stop
$675Icelandair
Find Deal
Thu, May 1 - Thu, May 8
Icelandair Logo
8:15 am - 10:59 pmLHR-PWM
19h 44m1 stop
Icelandair Logo
7:12 am - 9:30 amPWM-LHR
21h 18m1 stop
$741Icelandair
Find Deal
Thu, May 29 - Sun, Jun 1
 Logo
1:25 pm - 10:45 pmLHR-PWM
14h 20m1 stop
 Logo
1:07 pm - 6:40 amPWM-LHR
12h 33m1 stop
Fri, May 16 - Fri, May 23
Delta Logo
9:55 am - 12:14 amLHR-PWM
19h 19m2 stops
Delta Logo
2:30 pm - 10:00 amPWM-LHR
14h 30m1 stop
$795Delta
Find Deal
Fri, May 16 - Fri, May 23
United Airlines Logo
8:30 am - 9:16 pmLHR-PWM
17h 46m2 stops
United Airlines Logo
2:05 pm - 10:10 amPWM-LHR
15h 05m2 stops
$806United Airlines
Find Deal
Fri, May 16 - Fri, May 23
United Airlines Logo
12:15 pm - 7:11 pmLHR-PWM
11h 56m1 stop
United Airlines Logo
4:04 pm - 9:20 amPWM-LHR
12h 16m1 stop
$836United Airlines
Find Deal
Fri, May 16 - Fri, May 23
Scandinavian Airlines Logo
7:05 am - 12:14 amLHR-PWM
22h 09m2 stops
Scandinavian Airlines Logo
2:30 pm - 2:35 pmPWM-LHR
19h 05m3 stops
$898Scandinavian Airlines
Find Deal
Fri, May 16 - Fri, May 23
Delta Logo
9:55 am - 12:14 amLHR-PWM
19h 19m2 stops
Delta Logo
2:30 pm - 8:00 pmPWM-LHR
24h 30m1 stop
$911Delta
Find Deal
Thu, May 29 - Sun, Jun 1
Scandinavian Airlines Logo
6:40 am - 12:42 amLHR-PWM
23h 02m2 stops
Scandinavian Airlines Logo
2:30 pm - 4:25 pmPWM-LHR
20h 55m3 stops
$1,238Scandinavian Airlines
Find Deal
Thu, May 1 - Thu, May 8

KAYAK's insights & trends for London to Portland flights

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London Heathrow Airport to Portland, 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 London Heathrow Airport to Portland is February, where tickets cost $691 (return) on average. On the other hand, the most expensive months are July and December, where the average cost of round-trip tickets is $1,229 and $1,218 respectively.

Good to know

Low season

November

High season

August

Cheapest flight

$587
Best time to beat the crowds with an average 15% drop in price.
Most popular time to fly with an average 9% increase in price.
Flight from London to Portland

When to book flights from London to Portland

Are your dates flexible? Find out the best times to travel from London to Portland based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips 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 London to Portland flights

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

    In the last 3 days, the lowest price for a flight from London Heathrow Airport to Portland was $718 for a one-way ticket and $587 for a round-trip.

  • Do I need a passport to fly between London and Portland?

    Yes, you'll most likely have to show a valid passport before boarding the plane in London and on arrival in Portland.

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

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

  • Which airline alliances offer flights from London to Portland?

    Star Alliance, and SkyTeam are the airline alliances operating flights between London and Portland, with Star Alliance being the most commonly used for this route.

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

    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 London to Portland.

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

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

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

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Portland with an airline and back to London with another airline. Booking your flights between London and PWM can sometimes prove cheaper using this method.

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

    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 Portland from London up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

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

Information on your arrival and departure airports

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