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Seattle Tacoma Intl. Airport to Heathrow Airport flight

Explore the cheapest one-way and round-trip flights from Seattle Tacoma Intl. Airport to Heathrow Airport over the next 90 days, with one-way fares from PKR 73,306 and round-trip from PKR 148,182. Based on Trip.com's latest 7-day flight data.

      • Cheapest nonstop
        SEA 5:30 PM
        9h 50m
        Nonstop
        LHR 11:20 AM
        Seattle - London | Wed, Oct 7 | Virgin Atlantic
        LHR 5:45 PM
        10h 29m
        Nonstop
        SEA 8:14 PM
        London - Seattle | Tue, Oct 13 | Virgin Atlantic
        PKR 199,174 PKR 259,204
        23% off
        23% off
        PKR 259,204 PKR 199,174
      • SEA 9:40 PM
        9h 25m
        Nonstop
        LHR 3:05 PM
        Seattle - London | Sun, Oct 4 | Alaska Airlines
        LHR 5:00 PM
        10h
        Nonstop
        SEA 7:00 PM
        London - Seattle | Wed, Oct 7 | Alaska Airlines
        PKR 199,587 PKR 259,204
        23% off
        23% off
        PKR 259,204 PKR 199,587
      • SEA 3:55 PM
        16h 5m
        1 stop
        LHR 4:00 PM
        Seattle - London | Sun, Oct 4 | Scandinavian Airlines
        LHR 6:40 AM
        15h 5m
        1 stop
        SEA 1:45 PM
        London - Seattle | Tue, Oct 6 | Scandinavian Airlines
        PKR 148,182 PKR 259,204
        43% off
        43% off
        PKR 259,204 PKR 148,182
      • SEA 3:55 PM
        21h 45m
        1 stop
        LHR 9:40 PM
        Seattle - London | Sun, Sep 27 | Scandinavian Airlines
        LHR 7:30 PM
        26h 15m
        1 stop
        SEA 1:45 PM
        London - Seattle | Thu, Oct 1 | Scandinavian Airlines
        PKR 148,182
        43% off
        PKR 259,204 PKR 148,182
      • SEA 3:55 PM
        18h 35m
        1 stop
        LHR 6:30 PM
        Seattle - London | Sat, Sep 26 | Scandinavian Airlines
        LHR 7:30 PM
        26h 15m
        1 stop
        SEA 1:45 PM
        London - Seattle | Thu, Oct 1 | Scandinavian Airlines
        PKR 148,182
        43% off
        PKR 259,204 PKR 148,182
      • SEA 3:55 PM
        17h 45m
        1 stop
        LHR 5:40 PM
        Seattle - London | Tue, Oct 6 | Scandinavian Airlines
        LHR 6:40 AM
        15h 5m
        1 stop
        SEA 1:45 PM
        London - Seattle | Sat, Oct 10 | Scandinavian Airlines
        PKR 150,620
        42% off
        PKR 259,204 PKR 150,620
      • SEA 3:55 PM
        16h 5m
        1 stop
        LHR 4:00 PM
        Seattle - London | Sat, Oct 3 | Scandinavian Airlines
        LHR 6:40 AM
        15h 5m
        1 stop
        SEA 1:45 PM
        London - Seattle | Sat, Oct 10 | Scandinavian Airlines
        PKR 150,620
        42% off
        PKR 259,204 PKR 150,620
      • SEA 3:55 PM
        13h 40m
        1 stop
        LHR 1:35 PM
        Seattle - London | Fri, Oct 2 | Scandinavian Airlines
        LHR 7:30 PM
        26h 15m
        1 stop
        SEA 1:45 PM
        London - Seattle | Thu, Oct 8 | Scandinavian Airlines
        PKR 150,620
        42% off
        PKR 259,204 PKR 150,620
      • SEA 3:55 PM
        16h 5m
        1 stop
        LHR 4:00 PM
        Seattle - London | Tue, Sep 29 | Scandinavian Airlines
        LHR 6:40 AM
        15h 5m
        1 stop
        SEA 1:45 PM
        London - Seattle | Sat, Oct 3 | Scandinavian Airlines
        PKR 150,620
        42% off
        PKR 259,204 PKR 150,620
      • SEA 3:40 PM
        12h 15m
        1 stop
        LHR 11:55 AM
        Seattle - London | Fri, Oct 23 | Icelandair
        LHR 8:35 PM
        28h 25m
        1 stop
        SEA 6:00 PM
        London - Seattle | Wed, Oct 28 | Icelandair
        PKR 157,645
        39% off
        PKR 259,204 PKR 157,645
      • SEA 7:00 PM
        32h 55m
        1 stop
        LHR 11:55 AM
        Seattle - London | Thu, Oct 22 | Icelandair
        LHR 8:35 PM
        28h 25m
        1 stop
        SEA 6:00 PM
        London - Seattle | Wed, Oct 28 | Icelandair
        PKR 158,265
        39% off
        PKR 259,204 PKR 158,265
      • SEA 2:35 PM
        20h 55m
        1 stop
        LHR 7:30 PM
        Seattle - London | Mon, Nov 23 | Icelandair
        LHR 8:35 PM
        28h 25m
        1 stop
        SEA 5:00 PM
        London - Seattle | Mon, Nov 30 | Icelandair
        PKR 160,951
        38% off
        PKR 259,204 PKR 160,951
      • SEA 7:10 PM
        11h 50m
        1 stop
        LHR 3:00 PM
        Seattle - London | Mon, Sep 28 | Aer Lingus
        LHR 9:50 AM
        15h 20m
        1 stop
        SEA 5:10 PM
        London - Seattle | Wed, Sep 30 | Aer Lingus
        PKR 190,538
        26% off
        PKR 259,204 PKR 190,538
      • SEA 7:10 PM
        11h 50m
        1 stop
        LHR 3:00 PM
        Seattle - London | Sun, Oct 4 | Aer Lingus
        LHR 12:00 PM
        13h 10m
        1 stop
        SEA 5:10 PM
        London - Seattle | Wed, Oct 7 | Aer Lingus
        PKR 194,711
        25% off
        PKR 259,204 PKR 194,711
      • SEA 1:00 PM
        17h 25m
        1 stop
        LON 2:00 PM
        Seattle - London | Sun, Sep 27 | Normal Airline
        LON 3:00 PM
        6h
        Nonstop
        SEA 4:00 PM
        London - Seattle | Tue, Sep 29 | Normal Airline
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      • Cheapest nonstop
        SEA 5:40 PM
        9h 50m
        Nonstop
        LHR 10:30 AM
        Seattle - London | Mon, Oct 26 | Virgin Atlantic
        PKR 89,215 PKR 118,065
        24% off
        24% off
        PKR 118,065 PKR 89,215
      • SEA 7:55 PM
        9h 25m
        Nonstop
        LHR 12:20 PM
        Seattle - London | Mon, Oct 26 | Alaska Airlines
        PKR 90,910 PKR 118,065
        23% off
        23% off
        PKR 118,065 PKR 90,910
      • SEA 3:40 PM
        12h 10m
        1 stop
        LHR 10:50 AM
        Seattle - London | Sat, Oct 24 | Icelandair
        PKR 73,306 PKR 118,065
        38% off
        38% off
        PKR 118,065 PKR 73,306
      • SEA 3:35 PM
        12h 15m
        1 stop
        LHR 10:50 AM
        Seattle - London | Mon, Oct 26 | Icelandair
        PKR 74,381
        37% off
        PKR 118,065 PKR 74,381
      • SEA 3:40 PM
        12h 15m
        1 stop
        LHR 11:55 AM
        Seattle - London | Mon, Sep 28 | Icelandair
        PKR 77,976
        34% off
        PKR 118,065 PKR 77,976
      • SEA 2:30 PM
        14h 20m
        1 stop
        LHR 12:50 PM
        Seattle - London | Sun, Nov 8 | WestJet
        PKR 80,290
        32% off
        PKR 118,065 PKR 80,290
      • SEA 7:00 PM
        17h 20m
        1 stop
        LHR 8:20 PM
        Seattle - London | Thu, Oct 8 | Icelandair
        PKR 80,372
        32% off
        PKR 118,065 PKR 80,372
      • SEA 3:40 PM
        12h 15m
        1 stop
        LHR 11:55 AM
        Seattle - London | Mon, Oct 12 | Icelandair
        PKR 80,372
        32% off
        PKR 118,065 PKR 80,372
      • SEA 2:35 PM
        12h 15m
        1 stop
        LHR 10:50 AM
        Seattle - London | Thu, Nov 5 | Icelandair
        PKR 80,786
        32% off
        PKR 118,065 PKR 80,786
      • SEA 2:35 PM
        20h 55m
        1 stop
        LHR 7:30 PM
        Seattle - London | Sat, Nov 7 | Icelandair
        PKR 80,827
        32% off
        PKR 118,065 PKR 80,827
      • SEA 2:35 PM
        20h 55m
        1 stop
        LHR 7:30 PM
        Seattle - London | Sat, Nov 14 | Icelandair
        PKR 82,521
        30% off
        PKR 118,065 PKR 82,521
      • SEA 3:40 PM
        12h 15m
        1 stop
        LHR 11:55 AM
        Seattle - London | Sat, Oct 3 | Icelandair
        PKR 82,562
        30% off
        PKR 118,065 PKR 82,562
      • SEA 7:00 PM
        32h 55m
        1 stop
        LHR 11:55 AM
        Seattle - London | Sun, Oct 4 | Icelandair
        PKR 83,182
        30% off
        PKR 118,065 PKR 83,182
      • SEA 7:05 PM
        32h 45m
        1 stop
        LHR 11:50 AM
        Seattle - London | Sat, Nov 7 | Air Canada
        PKR 83,348
        28% off
        PKR 118,065 PKR 83,348
      • SEA 1:00 PM
        17h 25m
        1 stop
        LON 2:00 PM
        Seattle - London | Sun, Sep 27 | Normal Airline
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Displayed flight fares from Seattle Tacoma Intl. Airport to Heathrow Airport are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Trip.com Price Insights: Flights from Seattle Tacoma Intl. Airport to Heathrow Airport

What is the cheapest month for one-way flights from Seattle Tacoma Intl. Airport to Heathrow Airport?

Data is based on average one-way flight prices from Seattle Tacoma Intl. Airport to Heathrow Airport in Trip.com's database over the past 12 months.

Based on Trip.com’s data from the past 12 months, if you’re looking for a low-cost one-way ticket from Seattle Tacoma Intl. Airport to Heathrow Airport, the best time to buy is in August, with an average price of PKR 137,384. You’ll want to avoid June, when the average price can reach as high as PKR 213,827.

PKR 213,827
PKR 175,606
PKR 137,384
PKR 99,163
    Cheapest
  • PKR 165,515
    Sep
  • PKR 143,507
    Oct
  • PKR 168,159
    Nov
  • PKR 167,067
    Dec
  • PKR 152,732
    Jan
  • PKR 140,641
    Feb
  • PKR 181,361
    Mar
  • PKR 196,855
    Apr
  • PKR 179,240
    May
  • PKR 213,827
    Jun
  • PKR 149,081
    Jul
  • PKR 137,384
    Aug

What is the cheapest day of the week to fly from Seattle Tacoma Intl. Airport to Heathrow Airport?

The data is based on the past 12 months and shows the average ticket prices from Seattle Tacoma Intl. Airport to Heathrow Airport for each day of the week in the Trip.com database.

Based on Trip.com’s data from the past 12 months, the cheapest day to depart from Seattle Tacoma Intl. Airport to Heathrow Airport is Monday, with average fares typically lower than other days. You’ll want to avoid flying on Friday, as ticket prices are usually the highest that day.

PKR 172,448
PKR 146,886
PKR 121,323
PKR 95,761
  • PKR 121,323
    Mon
  • PKR 159,328
    Tue
  • PKR 163,420
    Wed
  • PKR 169,703
    Thu
  • PKR 172,448
    Fri
  • PKR 172,062
    Sat
  • PKR 162,127
    Sun

Which airline offers the cheapest flights from Seattle Tacoma Intl. Airport to Heathrow Airport?

The cheapest airline flying from Seattle Tacoma Intl. Airport to Heathrow Airport is Icelandair (from PKR 73,306) among 10 carriers operating this route. Based on Trip.com's latest 7-day flight data.

Icelandair
From PKR 73,306
WestJet
From PKR 80,290
Air Canada
From PKR 80,538
United Airlines
From PKR 83,596
Alaska Airlines
From PKR 84,174
Virgin Atlantic
From PKR 86,281
Jetblue Airways
From PKR 87,191
Lufthansa
From PKR 88,926
Delta Air Lines
From PKR 89,091
American Airlines
From PKR 91,571

Find more flights and airlines

What is the flight schedule from Seattle Tacoma Intl. Airport to Heathrow Airport?

Check the schedule for flights from Seattle to London and find the flight that best matches your travel plans.

Flight info.
Departure
Arrival
Weekly Schedule

  1. FI680

    Seattle Tacoma Intl. Airport

    3:40 PM

    SEA

    7h 35m

    Nonstop

    6:15 AM

    KEF

    S - T - T F S
    Search

  2. FI450

    Reykjavik Keflavik Airport

    7:40 AM

    KEF

    3h 15m

    Nonstop

    11:55 AM

    LHR

    S M T W T F S

  3. WS1553

    Seattle Tacoma Intl. Airport

    10:30 AM

    SEA

    1h 40m

    Nonstop

    1:10 PM

    YYC

    S M T W T F S
    Search

  4. WS002

    Calgary Intl. Airport

    8:35 PM

    YYC

    8h 30m

    Nonstop

    12:05 PM

    LHR

    S M T W T F S

  5. FI682

    Seattle Tacoma Intl. Airport

    7:00 PM

    SEA

    7h 25m

    Nonstop

    9:25 AM

    KEF

    S M T W T F S
    Search

  6. FI454

    Reykjavik Keflavik Airport

    4:10 PM

    KEF

    3h 10m

    Nonstop

    8:20 PM

    LHR

    S M T W T F S

  7. FI682

    Seattle Tacoma Intl. Airport

    7:00 PM

    SEA

    7h 25m

    Nonstop

    9:25 AM

    KEF

    S M T W T F S
    Search

  8. FI208

    Reykjavik Keflavik Airport

    11:00 AM

    KEF

    3h 10m

    Nonstop

    4:10 PM

    CPH

    S M T W T F S

  9. SK1501

    Copenhagen Airport

    8:40 PM

    CPH

    2h

    Nonstop

    9:40 PM

    LHR

    S M T W T - S

  10. FI680

    Seattle Tacoma Intl. Airport

    3:40 PM

    SEA

    7h 35m

    Nonstop

    6:15 AM

    KEF

    S - T - T F S
    Search

  11. FI454

    Reykjavik Keflavik Airport

    4:10 PM

    KEF

    3h 10m

    Nonstop

    8:20 PM

    LHR

    S M T W T F S

  12. UA8250

    Seattle Tacoma Intl. Airport

    7:15 PM

    SEA

    1h 7m

    Nonstop

    8:22 PM

    YVR

    S M T W T F S
    Search

  13. UA8582

    Vancouver Intl. Airport

    8:10 PM

    YVR

    9h 10m

    Nonstop

    1:20 PM

    LHR

    S M T W T F S

  14. FI682

    Seattle Tacoma Intl. Airport

    7:00 PM

    SEA

    7h 25m

    Nonstop

    9:25 AM

    KEF

    S M T W T F S
    Search

  15. FI450

    Reykjavik Keflavik Airport

    7:40 AM

    KEF

    3h 15m

    Nonstop

    11:55 AM

    LHR

    S M T W T F S
Find more flights and airlines

About Seattle Tacoma Intl. Airport and Heathrow Airport

Learn about Seattle Tacoma Intl. Airport (SEA) and Heathrow Airport (LHR) — including location, terminals, transportation, and travel tips.

Flight distance 7,711.31 km
Cheapest one-way ticket price PKR 73,306
Cheapest return ticket price PKR 148,182

FAQs for Seattle Tacoma Intl. Airport to Heathrow Airport Flights

  • How long is the flight from Seattle Tacoma Intl. Airport to Heathrow Airport?

    Seattle Tacoma Intl. Airport to Heathrow Airport takes about 8 hours 48 minutes on average. Actual flight time may vary depending on route, weather and air traffic.
  • There are around 8 daily flights from Seattle Tacoma Intl. Airport (SEA) to Heathrow Airport (LHR).
  • The earliest flight from Seattle Tacoma Intl. Airport to Heathrow Airport departs at 13:30, and the last departs at 21:50, with about 5 flights per day. Flight times may change, so please check the latest departure and arrival times before you travel.
  • The route from Seattle Tacoma Intl. Airport (SEA) to Heathrow Airport (LHR) is quite popular. Without considering departure times or holidays, tickets cost around PKR 241,860 in December, the most expensive month to book this route.
  • The latest flight departs from Seattle Tacoma Intl. Airport (SEA) at 20:25 and arrives in Heathrow Airport (LHR) at 14:15.
    • The distance from London Gatwick Airport to downtown is about 39 km. It takes about 50 minutes by taxi.
    • The distance from Heathrow Airport to downtown is about 23 km. It takes about 40 minutes by taxi.
    • The distance from London Luton Airport to downtown is about 44 km. It takes about 1 hour by taxi.
  • British Airways is a very popular airline operating an average of 2873 flights per month.
  • One-way flights from Seattle Tacoma Intl. Airport to Heathrow Airport currently start from PKR 73,306, and round-trip fares start from PKR 148,182. The current lowest fare is a Icelandair flight departing on Sat, Oct 24; prices may vary depending on availability.
  • Yes. British Airways, Alaska Airlines, Delta Air Lines and Virgin Atlantic operate direct flights from Seattle Tacoma Intl. Airport to Heathrow Airport, with an average flight time of 8 hours 41 minutes, and around 35 weekly flights. Actual flight frequency may vary by season.
  • Based on Trip.com flight data for departures within the next 30 days with at most one stop, the average one-way price from Seattle Tacoma Intl. Airport to Heathrow Airport is PKR 148,116. Prices may vary depending on the departure date, airline, and availability.
  • Seattle Tacoma Intl. Airport to Heathrow Airport operates around 34 weekly flights, mainly by British Airways, Alaska Airlines and Delta Air Lines. Actual frequency may vary during holidays and seasonal schedule adjustments.
  • Enter Seattle Tacoma Intl. Airport and Heathrow Airport, select your departure date and number of passengers, then compare flights by price, flight duration, and baggage allowance. Once you've chosen a fare, review the change and refund rules, fill in passenger details, and pay to receive your booking confirmation.

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Note: Prices shown on this page are estimated lowest price and include all taxes and fees found in the last 24 hours.

Book with no extra fees

Prices displayed in this page are all-inclusive prices (incl. taxes, fuel surcharge, civil aviation development fund, etc) with all fees confirmed before payment. Fees for luggage, meals, WLAN, or other additional services are also included as shown in the flight cards.

Real-time pricing updates

Prices, availability, and travel information on this page were updated within last 24 hours—even in real-time. The more popular the route, the more precise the data.

Change & Cancellation Policy

Trip.com displays flight cancellation and change policies for each flight ticket during the booking process, including fees and applicable conditions. Please check the following scenarios:
Voluntary cancellation/change:
To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy.
Cancellation/change due to a flight schedule change:
If the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.