PWM - LHR

£240 Find Cheap Flights from Portland to London – Compare and Save

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1 adult, Economy, 0 bags

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Everything you should know

Cheapest return flight
£551
Typical prices: £558-£831
Delta
Sat 10/11Sat 17/11
PWM - LHR • 1 stop
Cheapest one-way flight
£240
Typical prices: £269-£447
JetBlue
Fri 16/11
PWM - LHR • 1 stop
Direct flights
Not available
There are currently no direct flights between Portland and London Heathrow Airport. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to travel
December
Cheapest • 19% price drop
May
Most popular
Good to know
+1
Good to know
+1
Top stopover airports
Newark (EWR)
Cheapest • Avg £713 (return)
Philadelphia (PHL)
Shortest trip • 11h 19m (one-way)
Insights
Insights
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We hope you enjoy your trip to London Heathrow Airport!
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Booking Insights
Flight Deals

Cheap Flights from Portland to Heathrow (PWM-LHR)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Portland to Heathrow

Tue, 10 Nov - Tue, 17 Nov
Delta Logo
14:05 - 07:50PWM  Portland-LHR London Heathrow
12h 45m1 stop Atlanta Hartsfield-Jackson
Delta Logo
06:30 - 00:19LHR  London Heathrow-PWM Portland
22h 49m2 stops Amsterdam Schiphol New York John F Kennedy Intl
£551Delta
Wed, 4 Nov - Tue, 10 Nov
Delta Logo
06:01 - 06:25PWM  Portland-LHR London Heathrow
19h 24m1 stop Atlanta Hartsfield-Jackson
Delta Logo
11:45 - 00:19LHR  London Heathrow-PWM Portland
17h 34m2 stops Amsterdam Schiphol New York John F Kennedy Intl
£552Delta
Tue, 10 Nov - Tue, 17 Nov
Delta Logo
06:00 - 06:25PWM  Portland-LHR London Heathrow
19h 25m1 stop Atlanta Hartsfield-Jackson
Delta Logo
06:20 - 23:31LHR  London Heathrow-PWM Portland
22h 11m2 stops Paris Charles de Gaulle Atlanta Hartsfield-Jackson
£553Delta
Tue, 10 Nov - Tue, 17 Nov
Delta Logo
12:45 - 11:40PWM  Portland-LHR London Heathrow
17h 55m2 stops Detroit Metropolitan Wayne County Atlanta Hartsfield-Jackson
Delta Logo
06:30 - 00:19LHR  London Heathrow-PWM Portland
22h 49m2 stops Amsterdam Schiphol New York John F Kennedy Intl
£555Delta
Mon, 9 Nov - Thu, 12 Nov
United Airlines Logo
17:08 - 07:55PWM  Portland-LHR London Heathrow
33h 47m1 stop Chicago O'Hare Intl
United Airlines Logo
06:50 - 19:02LHR  London Heathrow-PWM Portland
17h 12m2 stops Brussels Bruxelles-National Washington, D.C. Dulles Intl
£556United Airlines
Tue, 10 Nov - Tue, 17 Nov
Multiple Airlines Logo
14:05 - 09:00PWM  Portland-LHR London Heathrow
13h 55m1 stop Atlanta Hartsfield-Jackson
Multiple Airlines Logo
15:50 - 00:19LHR  London Heathrow-PWM Portland
13h 29m1 stop New York John F Kennedy Intl
£557Multiple Airlines
Tue, 10 Nov - Tue, 17 Nov
Multiple Airlines Logo
14:05 - 09:00PWM  Portland-LHR London Heathrow
13h 55m1 stop Atlanta Hartsfield-Jackson
Multiple Airlines Logo
15:50 - 00:19LHR  London Heathrow-PWM Portland
13h 29m1 stop New York John F Kennedy Intl
£558Multiple Airlines
Wed, 24 Feb - Wed, 3 Mar
Delta Logo
14:35 - 06:20PWM  Portland-LHR London Heathrow
10h 45m1 stop New York John F Kennedy Intl
Delta Logo
10:00 - 23:49LHR  London Heathrow-PWM Portland
18h 49m2 stops Amsterdam Schiphol New York John F Kennedy Intl
£560Delta
Wed, 24 Feb - Wed, 3 Mar
Delta Logo
12:50 - 07:50PWM  Portland-LHR London Heathrow
14h 00m2 stops Detroit Metropolitan Wayne County Atlanta Hartsfield-Jackson
Delta Logo
08:40 - 22:23LHR  London Heathrow-PWM Portland
18h 43m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson
£563Delta
Wed, 24 Feb - Wed, 3 Mar
KLM Logo
14:35 - 08:05PWM  Portland-LHR London Heathrow
12h 30m1 stop New York John F Kennedy Intl
KLM Logo
15:50 - 23:49LHR  London Heathrow-PWM Portland
12h 59m1 stop New York John F Kennedy Intl
£567KLM
Booking Insights

Price, demand, and travel trends for Portland to London Heathrow Airport flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights from Portland to London Heathrow Airport with more confidence.

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

Return flights from Portland to London Heathrow Airport start at £551. Prices are below average for this route right now, with typical return fares ranging from £558 to £831. The lowest price found in the past 5 days was £551 on Delta.

What's the cheapest day of the week to fly from Portland to London Heathrow Airport?

Sunday is the cheapest day of the week to fly from Portland to London Heathrow Airport and is 9% cheaper than the average day. Friday is the most expensive day with flight prices 35% higher than average. Based on deals found by KAYAK users in the last 12 months.

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Key details for Portland to London Heathrow Airport flights

Low season

February

Cheapest flight

£240
Best time to beat the crowds (13% less expensive on average)
Most popular time to fly (7% more expensive on average)
Flights 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

Your Portland to London Heathrow Airport flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines, and booking questions.

  • Which cabin classes can I book on flights from Portland to London Heathrow Airport?

    Only Economy class is available on flights from Portland to London Heathrow Airport.

  • How long is a flight from Portland to London Heathrow Airport?

    A direct flight from Portland to London Heathrow Airport takes 0h 00m, covering 3,173 miles.

  • Do I need a passport to fly from Portland to London Heathrow Airport?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How much should I expect to pay for a Portland to London Heathrow Airport flight?

    Return flights from Portland to London Heathrow Airport range from £558 to £831, with an average of £649 over the past 12 months. Anything below £558 counts as a good deal.

  • How are flight prices from Portland to London Heathrow Airport looking right now?

    One-way fares from Portland to London Heathrow Airport are currently lower than usual. Average one-way flight prices are about £270, which is 27% below the typical average for this route.

  • Which car hire options are available at London Heathrow Airport (LHR)?

    London Heathrow Airport (LHR) hosts 5 major car hire companies, with daily rates starting from around £5 for economy cars. Top options include:
    • GREEN MOTION
    • DRIVALIA
    • Europcar
    • Alamo
    • Hertz

  • Which airports can I use when flying from Portland to London Heathrow Airport?

    Flights from Portland to London Heathrow Airport usually depart from Portland (PWM) and arrive at London Heathrow (LHR).

  • Which airports do connecting flights from Portland to London Heathrow Airport pass through?

    One-stop flights from Portland to London Heathrow Airport most commonly connect through:

    • Newark (EWR) – 49% of one-stop connections
    • Philadelphia (PHL) – 23% of one-stop connections
    • New York John F Kennedy Intl (JFK) – 21% of one-stop connections
    • Atlanta Hartsfield-Jackson (ATL) – 4% of one-stop connections

    Newark (EWR) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from Portland to London Heathrow Airport?

    On the Portland to London Heathrow Airport route, being flexible with your departure day can save you up to 33%. Sunday is the cheapest day at £596 return on average, while Friday is the most expensive at £877 – a £281 difference. Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

  • How much time can I save by choosing a different stopover airport from Portland to London Heathrow Airport?

    Flying via Newark (EWR) gives the shortest average 1-stop total travel time of 11h 00m, compared to 11h 19m via Philadelphia (PHL) and 12h 26m via Chicago O'Hare Intl (ORD).

  • What is the time difference between Portland and London Heathrow Airport?

    London Heathrow Airport is 5 hours ahead of Portland (British Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in London Heathrow Airport?

    Some of the most popular sights in London Heathrow Airport are Hyde Park, Tower Bridge, and Royal Albert Hall. These are among the most viewed places in London Heathrow Airport on KAYAK.

Your guide to booking Portland to London Heathrow Airport flights

Get tips on when to book, when to fly, and what to know before your trip.
  • If your dates are flexible, aim for a Sunday departure instead of Friday. On this route, Sunday flights average £596 – about £281 less than Friday (32% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Portland to London Heathrow Airport trip for December. Fares historically average £524 return in that month – typically £445 less than the most expensive month, which is July (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to London Heathrow Airport.
    - Hilton London Heathrow Airport

More options for your flight from Portland to Heathrow

Complete your trip to London with a hotel stay or car hire

Car hire in London
Hotels in London
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