PWM - LHR

£267 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 19/4. 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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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest return fare
£445
Typical prices: £1,091-£1,113
Virgin Atlantic
Thu 4/12Thu 11/12
PWM - LHR • 1 stop
Cheapest one-way flight
£267
JetBlue
Sun 19/4
PWM - LHR • 1 stop
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
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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!
Flight Deals
Booking Insights
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

Thu, 4 Dec - Thu, 11 Dec
Virgin Atlantic Logo
06:08 - 07:50PWM-LHR
20h 42m1 stop
Virgin Atlantic Logo
08:55 - 22:23LHR-PWM
18h 28m1 stop
£445Virgin Atlantic
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Wed, 14 Jan - Mon, 19 Jan
Delta Logo
06:17 - 08:05PWM-LHR
20h 48m1 stop
Delta Logo
08:40 - 00:20LHR-PWM
20h 40m2 stops
£460Delta
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Wed, 14 Jan - Mon, 19 Jan
KLM Logo
12:20 - 08:45PWM-LHR
15h 25m1 stop
KLM Logo
16:35 - 00:20LHR-PWM
12h 45m1 stop
£481KLM
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Thu, 4 Dec - Thu, 11 Dec
Multiple Airlines Logo
16:53 - 08:45PWM-LHR
10h 52m1 stop
Multiple Airlines Logo
10:45 - 22:23LHR-PWM
16h 38m1 stop
£499Multiple Airlines
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Thu, 4 Dec - Thu, 11 Dec
Multiple Airlines Logo
14:34 - 09:00PWM-LHR
13h 26m2 stops
Multiple Airlines Logo
12:30 - 22:23LHR-PWM
14h 53m1 stop
£506Multiple Airlines
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Thu, 4 Dec - Thu, 11 Dec
KLM Logo
14:34 - 09:00PWM-LHR
13h 26m2 stops
KLM Logo
11:45 - 23:59LHR-PWM
17h 14m2 stops
£522KLM
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Thu, 4 Dec - Thu, 11 Dec
Scandinavian Airlines Logo
06:15 - 09:20PWM-LHR
22h 05m2 stops
Scandinavian Airlines Logo
06:40 - 23:59LHR-PWM
22h 19m3 stops
£547Scandinavian Airlines
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Wed, 18 Mar - Wed, 25 Mar
United Airlines Logo
11:17 - 09:20PWM-LHR
18h 03m2 stops
United Airlines Logo
06:50 - 18:13LHR-PWM
15h 23m2 stops
£554United Airlines
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Wed, 17 Dec - Wed, 24 Dec
United Airlines Logo
06:00 - 11:15PWM-LHR
24h 15m2 stops
United Airlines Logo
11:10 - 14:40LHR-PWM
32h 30m2 stops
£716United Airlines
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Thu, 4 Dec - Thu, 11 Dec
Scandinavian Airlines Logo
14:34 - 16:25PWM-LHR
20h 51m3 stops
Scandinavian Airlines Logo
06:40 - 23:59LHR-PWM
22h 19m3 stops
£771Scandinavian Airlines
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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.

How much is a return flight from Portland, Maine to London Heathrow Airport?

This analysis is based on the cheapest return trip price found on KAYAK in the last 12 months by searching for a flight from Portland, Maine to London Heathrow Airport departing in December.

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 £532 (return) on average. On the other hand, the most expensive months are June and December, where the average cost of round-trip tickets is £1,115 and £1,101 respectively.

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

Low seasonJanuary
Cheapest flight£267
Best time to beat the crowds (17% less expensive 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 £267 for a one-way ticket and £445 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)