PWM - LON

$330 Find Cheap Flights from Portland to London - Compare and Save

1 adult
1 adult, Economy, 0 bags

Save 21% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Everything you should know

Cheapest round-trip
$853
Typical prices: $746-$1,110
Multiple Airlines
Mon 10/15Tue 11/6
PWM - LGW • 2 stops
Cheapest one-way
$330
Typical prices: $359-$579
Delta
Sat 12/1
PWM - LHR • 2 stops
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.
Insights
Insights
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)
Insights
Insights
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to London!
Flight Deals
Booking Insights
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

Thu, Oct 15 - Fri, Nov 6
Multiple Airlines Logo
3:05 pm - 10:00 amPWM  Portland-LGW London Gatwick
37h 55m2 stops Pittsburgh Orlando
Multiple Airlines Logo
12:35 pm - 9:08 amLGW  London Gatwick-PWM Portland
25h 33m1 stop Orlando
$853Multiple Airlines
Wed, Oct 14 - Fri, Nov 6
American Airlines Logo
7:00 am - 6:50 amPWM  Portland-LGW London Gatwick
18h 50m2 stops Philadelphia Orlando
American Airlines Logo
11:15 am - 10:37 amLGW  London Gatwick-PWM Portland
28h 22m2 stops Orlando Philadelphia
$863American Airlines
Tue, Nov 10 - Tue, Nov 17
United Airlines Logo
3:41 pm - 10:25 amPWM  Portland-LHR London Heathrow
13h 44m1 stop Newark
United Airlines Logo
6:50 am - 11:21 pmLHR  London Heathrow-PWM Portland
21h 31m2 stops Brussels Bruxelles-National Newark
$867United Airlines
Tue, Nov 10 - Tue, Nov 24
United Airlines Logo
2:05 pm - 6:40 amPWM  Portland-LHR London Heathrow
11h 35m1 stop Washington, D.C. Dulles 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
$867United Airlines
Tue, Sep 29 - Tue, Oct 6
United Airlines Logo
3:41 pm - 7:15 amPWM  Portland-LHR London Heathrow
10h 34m1 stop Newark
United Airlines Logo
6:50 am - 8:22 pmLHR  London Heathrow-PWM Portland
18h 32m2 stops Brussels Bruxelles-National Newark
$867United Airlines
Wed, Oct 14 - Wed, Oct 21
United Airlines Logo
6:00 am - 8:40 pmPWM  Portland-LHR London Heathrow
9h 40m1 stop Newark
United Airlines Logo
6:50 am - 7:24 pmLHR  London Heathrow-PWM Portland
17h 34m2 stops Brussels Bruxelles-National Washington, D.C. Dulles Intl
$867United Airlines
Tue, Oct 13 - Tue, Oct 20
United Airlines Logo
6:00 am - 8:40 pmPWM  Portland-LHR London Heathrow
9h 40m1 stop Newark
United Airlines Logo
6:50 am - 8:22 pmLHR  London Heathrow-PWM Portland
18h 32m2 stops Brussels Bruxelles-National Newark
$867United Airlines
Wed, Oct 14 - Fri, Nov 6
Delta Logo
6:01 am - 7:15 amPWM  Portland-LHR London Heathrow
20h 14m1 stop Atlanta Hartsfield-Jackson
Delta Logo
8:40 am - 9:00 pmLHR  London Heathrow-PWM Portland
17h 20m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson
$868Delta
Tue, Nov 10 - Tue, Nov 24
Delta Logo
2:05 pm - 9:00 amPWM  Portland-LHR London Heathrow
13h 55m1 stop Atlanta Hartsfield-Jackson
Delta Logo
6:30 am - 11:31 pmLHR  London Heathrow-PWM Portland
22h 01m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson
$868Delta
Tue, Nov 10 - Tue, Nov 17
United Airlines Logo
3:41 pm - 10:25 amPWM  Portland-LHR London Heathrow
13h 44m1 stop Newark
United Airlines Logo
6:50 am - 11:21 pmLHR  London Heathrow-PWM Portland
21h 31m2 stops Brussels Bruxelles-National Newark
$868United Airlines
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.

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

$330
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.

  • 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).

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

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

    • Economy Class
    • Premium Economy Class
    • First Class

  • 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.

  • What popular places can I visit in London?

    Some of the most popular sights in London are Paddington Station, Central London and London Victoria Station. These are among the most viewed places in London on KAYAK.

  • 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 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 $385, which is 22% below the typical average for this route.

  • 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 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

  • 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.

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

    · Good Hotel London
    · Crowne Plaza London Docklands By IHG
    · Novotel London Excel

    Near London Heathrow Airport

    · Hilton London Heathrow Airport

    Near London Gatwick Airport

    · Premier Inn London Gatwick Airport

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

Information on your arrival and departure airports

Portland (PWM)