PWM - LON

$320 Find Cheap Flights from Portland to London - Compare and Save

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Everything you should know

Cheapest round-trip
$735
Typical prices: $746-$1,110
United Airlines
Fri 11/16Sun 11/18
PWM - LHR • 2 stops
Cheapest one-way
$320
Typical prices: $359-$579
JetBlue
Fri 11/16
PWM - LHR • 1 stop
Nonstop flights
Not available
There are currently no direct flights between Portland and London. You'll need to take a connecting flight to reach the destination.
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Top routes
PWM - LCY
Cheapest • 13% average savings
PWM - LHR
Most popular
Insights
Insights
When to travel
December
Cheapest • 19% price drop
May
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Newark (EWR)
Cheapest • Avg $952 (round-trip)
Philadelphia (PHL)
Shortest trip • 11h 19m (one-way)
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Flight Deals

Cheap Flights from Portland to London (PWM-LON)

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

Recent round-trip flight deals from Portland to London

Mon, Nov 16 - Wed, Nov 18
United Airlines Logo
3:41 pm - 11:15 amPWM  Portland-LHR London Heathrow
14h 34m2 stops Newark Zurich
United Airlines Logo
9:00 am - 11:21 pmLHR  London Heathrow-PWM Portland
43h 21m2 stops Halifax Intl Newark
$735United Airlines
Tue, Nov 10 - Tue, Nov 17
Delta Logo
2:05 pm - 7:50 amPWM  Portland-LHR London Heathrow
12h 45m1 stop Atlanta Hartsfield-Jackson
Delta Logo
6:30 am - 12:19 amLHR  London Heathrow-PWM Portland
22h 49m2 stops Amsterdam Schiphol New York John F Kennedy Intl
$736Delta
Wed, Nov 4 - Tue, Nov 10
Delta Logo
6:01 am - 6:25 amPWM  Portland-LHR London Heathrow
19h 24m1 stop Atlanta Hartsfield-Jackson
Delta Logo
11:45 am - 12:19 amLHR  London Heathrow-PWM Portland
17h 34m2 stops Amsterdam Schiphol New York John F Kennedy Intl
$737Delta
Tue, Nov 10 - Tue, Nov 17
Delta Logo
6:00 am - 6:20 amPWM  Portland-LHR London Heathrow
19h 20m1 stop New York John F Kennedy Intl
Delta Logo
8:55 am - 12:19 amLHR  London Heathrow-PWM Portland
20h 24m2 stops Paris Charles de Gaulle New York John F Kennedy Intl
$738Delta
Tue, Nov 10 - Tue, Nov 17
Delta Logo
12:45 pm - 11:40 amPWM  Portland-LHR London Heathrow
17h 55m2 stops Detroit Metropolitan Wayne County Atlanta Hartsfield-Jackson
Delta Logo
6:30 am - 12:19 amLHR  London Heathrow-PWM Portland
22h 49m2 stops Amsterdam Schiphol New York John F Kennedy Intl
$741Delta
Mon, Nov 9 - Thu, Nov 12
United Airlines Logo
5:08 pm - 7:55 amPWM  Portland-LHR London Heathrow
33h 47m1 stop Chicago O'Hare Intl
United Airlines Logo
6:50 am - 7:02 pmLHR  London Heathrow-PWM Portland
17h 12m2 stops Brussels Bruxelles-National Washington, D.C. Dulles Intl
$742United Airlines
Tue, Nov 3 - Thu, Nov 12
Delta Logo
6:01 am - 7:45 amPWM  Portland-LHR London Heathrow
20h 44m2 stops Atlanta Hartsfield-Jackson Detroit Metropolitan Wayne County
Delta Logo
8:40 am - 12:19 amLHR  London Heathrow-PWM Portland
20h 39m2 stops Amsterdam Schiphol New York John F Kennedy Intl
$743Delta
Tue, Nov 10 - Tue, Nov 17
Multiple Airlines Logo
2:05 pm - 9:00 amPWM  Portland-LHR London Heathrow
13h 55m1 stop Atlanta Hartsfield-Jackson
Multiple Airlines Logo
3:50 pm - 12:19 amLHR  London Heathrow-PWM Portland
13h 29m1 stop New York John F Kennedy Intl
$744Multiple Airlines
Tue, Nov 10 - Tue, Nov 17
KLM Logo
2:05 pm - 11:40 amPWM  Portland-LHR London Heathrow
16h 35m1 stop Atlanta Hartsfield-Jackson
KLM Logo
11:35 am - 12:19 amLHR  London Heathrow-PWM Portland
17h 44m1 stop New York John F Kennedy Intl
$745KLM
Wed, Feb 24 - Wed, Mar 3
Delta Logo
2:35 pm - 6:20 amPWM  Portland-LHR London Heathrow
10h 45m1 stop New York John F Kennedy Intl
Delta Logo
10:00 am - 11:49 pmLHR  London Heathrow-PWM Portland
18h 49m2 stops Amsterdam Schiphol New York John F Kennedy Intl
$748Delta
Booking Insights

Price, demand and travel trends for Portland to London flights

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

How much is a round-trip flight from Portland to London?

Round-trip flights from Portland to London start at $735. Prices are below average for this route right now, with typical round-trip fares ranging from $746 to $1,110. The lowest price found in the past 5 days was $735 on United Airlines.

What is the cheapest Portland to London flight route?

Portland (PWM) to London City Airport (LCY) is the cheapest Portland to London route, averaging $664 round-trip. Other Portland to London routes average $867, based on KAYAK data over the past 12 months.

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

Sunday is the cheapest day of the week to fly from Portland to London, it 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.

Find deals

Key details for Portland to London flights

Low season

February

Cheapest flight

$320
Best time to beat the crowds with an average 13% drop in price.
Most popular time to fly with an average 7% increase in price.
Flight from Portland to London Heathrow Airport

When to book flights from Portland to London

Are your dates flexible? Find out the best times to travel from Portland to London based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Portland to London flight questions, answered

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

  • What cabin classes can I book on flights from Portland to London?

    Two cabin classes are available on flights from Portland to London:

    • Economy Class
    • First Class

  • How long is a flight from Portland to London?

    A nonstop flight from Portland to London takes 0h 00m, covering 3,186 miles.

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

    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 flight?

    Round-trip flights from Portland to London range from $746 to $1,110, with an average of $867 over the past 12 months. Anything below $746 counts as a good deal.

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

    One-way fares from Portland to London are currently lower than usual. Average one-way flight prices are about $377, which is 24% below the typical average for this route.

  • What car rental options are available in London?

    Since London is served by multiple airports, car rental options and rates can vary depending on which one you fly into.
    Near London Heathrow Airport (LHR) — daily rates from around $7:

    • GREEN MOTION
    • DRIVALIA
    • Europcar
    • Alamo
    • Hertz

    Near London Gatwick Airport (LGW) — daily rates from around $8:

    • GREEN MOTION
    • DRIVALIA
    • U-Save
    • Europcar
    • Alamo

    Near London City Airport (LCY) — daily rates from around $11:

    • GREEN MOTION
    • Budget
    • Hertz
    • Avis
    • Sixt

    Near London Luton Airport (LTN) — daily rates from around $11:

    • GREEN MOTION
    • DRIVALIA
    • Alamo
    • Europcar
    • Budget

    Near London Stansted Airport (STN) — daily rates from around $10:

    • GREEN MOTION
    • DRIVALIA
    • Europcar
    • Alamo
    • U-Save

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

    Flights from Portland to London usually depart from Portland (PWM) and may arrive at several airports in London area, including London City (LCY), London Gatwick (LGW), London Heathrow (LHR), London Luton (LTN), London Southend (SEN) and London Stansted (STN).

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

    One-stop flights from Portland to London 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?

    On the Portland to London route, being flexible with your departure day can save you up to 33%. Sunday is the cheapest day at $796 round-trip on average, while Friday is the most expensive at $1,171: a $375 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 layover airport from Portland to London?

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

  • What is the time difference between Portland and London?

    London 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?

    Some of the most popular sights in London are Hyde Park, Buckingham Palace and Trafalgar Square. These are among the most viewed places in London on KAYAK.

Your guide to booking Portland to London flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Sunday departure instead of Friday. On this route, Sunday flights average $796 - about $375 less than Friday (32% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Portland to London trip for December. Fares historically average $700 round-trip in that month - typically $595 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, hotels close to the airport you're flying into can be a convenient option.

    Near London City Airport

    · Aloft London Excel
    · Good Hotel London
    · Novotel London Excel

    Near London Heathrow Airport

    · Hilton London Heathrow Airport

    Near London Gatwick Airport

    · Premier Inn London Gatwick Airport

More options for your flight from Portland to London

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

Car rentals in London
Hotels in London
Vacations in London