United Airlines Seattle to London Flights

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Cheapflightsplus.com will find cheap United Airlines flights from Seattle to London. Compare airline ticket prices and book air tickets starting from $427 from trusted online travel agencies, web sites and directly from airlines. Check flights schedule of United Airlines, arrivals and departure details below.

Find Cheap Airfare Seattle (WA) — London by United Airlines

To find cheap tickets choose a day of your departure with attractive price on the graph below and click «Find flights». For round trip flights please click «Check prices for return flight». The cheapest airfare is in january: one-way - $427, two-way – $732.

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Cheap Flights from Seattle to London by United Airlines

Look at the list of plane tickets for the most connecting flights by United Airlines, their prices start from $427. There’re no direct flights. The fastest connecting flight – 12h 50m.

Price	Departure	Arrival	Flight Time	Airline	Flight
from $427 Find flight	10:35 am Seattle Seattle-Tacoma Intl	10:10 am+1 день London Heathrow	15h 35m layover 4h 58m - Vancouver	United Airlines	UA8242 UA8582
from $427 Find flight	9:00 am Seattle Seattle-Tacoma Intl	9:40 am+1 день London Heathrow	16h 40m layover 4h 52m - Denver	United Airlines	UA1829 UA27
from $431 Find flight	11:20 pm Seattle Seattle-Tacoma Intl	8:35 pm+1 день London Heathrow	13h 15m layover 0h 59m - Newark	United Airlines	UA341 UA934
from $431 Find flight	12:35 pm Seattle Seattle-Tacoma Intl	9:40 am+1 день London Heathrow	13h 5m layover 1h 18m - Denver	United Airlines	UA1483 UA27
from $431 Find flight	11:05 am Seattle Seattle-Tacoma Intl	11:15 am+1 день London Heathrow	16h 10m layover 4h 0m - Chicago	United Airlines	UA747 UA938
from $433 Find flight	6:05 am Seattle Seattle-Tacoma Intl	6:30 am+1 день London Heathrow	16h 25m layover 4h 20m - Toronto	United Airlines	UA8244 UA8306
from $482 Find flight	11:05 am Seattle Seattle-Tacoma Intl	7:55 am+1 день London Heathrow	12h 50m layover 0h 40m - Chicago	United Airlines	UA747 UA920
from $482 Find flight	7:15 am Seattle Seattle-Tacoma Intl	7:25 am+1 день London Heathrow	16h 10m layover 3h 14m - San Francisco	United Airlines	UA1403 UA901
from $482 Find flight	7:00 am Seattle Seattle-Tacoma Intl	7:55 am+1 день London Heathrow	16h 55m layover 4h 44m - Chicago	United Airlines	UA1373 UA920
from $485 Find flight	12:20 pm Seattle Seattle-Tacoma Intl	10:15 am+1 день London Heathrow	13h 55m layover 1h 28m - Newark	United Airlines	UA2033 UA940
from $485 Find flight	10:52 am Seattle Seattle-Tacoma Intl	7:55 am+1 день London Heathrow	13h 3m layover 0h 52m - Chicago	United Airlines	UA2296 UA920
from $485 Find flight	5:45 am Seattle Seattle-Tacoma Intl	10:10 am+1 день London Heathrow	20h 25m layover 9h 48m - Vancouver	United Airlines	UA6614 UA8582
from $485 Find flight	5:02 am Seattle Seattle-Tacoma Intl	9:40 am+1 день London Heathrow	20h 38m layover 8h 51m - Denver	United Airlines	UA2269 UA27
from $497 Find flight	2:00 pm Seattle Seattle-Tacoma Intl	12:45 pm+1 день London Heathrow	14h 45m layover 2h 50m - Frankfurt	United Airlines	UA8718 UA8815
from $431 Find flight	6:13 pm Seattle Seattle-Tacoma Intl	8:35 pm+1 день London Heathrow	18h 22m layover 2h 8m - San Francisco 1h 20m - Newark	United Airlines	UA737 UA1318 UA934
from $431 Find flight	3:25 pm Seattle Seattle-Tacoma Intl	8:35 pm+1 день London Heathrow	21h 10m layover 3h 41m - San Francisco 2h 26m - Newark	United Airlines	UA589 UA1555 UA934

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*Departure and arrival times are local. Prices are for one-way flights. Information refreshed on 01/21/2025

United Airlines Flight Schedule Seattle to London

Below is a detailed 2025 flight schedule for today, tomorrow and all other days. It may vary depending on season and a day of the week of your desired trip. We recommend booking your itinerary at least 2 weeks prior your travel to get the best price and availability by the airline.

Departure	Flight Details	Flight Time	Price
10:35 am — 10:10 am +1 day	10:35 am — 11:46 am UA8242 United Airlines Seattle — Vancouver 4h 58m stop 4:40 pm — 10:10 am UA8582 United Airlines Vancouver — London	15h 35m including layover	Find flight from$427
10:52 am — 7:55 am +1 day	10:52 am — 4:58 pm UA2296 United Airlines Seattle — Chicago 52m stop 5:50 pm — 7:55 am UA920 United Airlines Chicago — London	13h 3m including layover	Find flight from$485
11:05 am — 11:15 am +1 day	10:55 am — 4:59 pm UA747 United Airlines Seattle — Chicago 4h stop 9:10 pm — 11:15 am UA938 United Airlines Chicago — London	16h 10m including layover	Find flight from$431
11:20 pm — 8:35 pm +1 day	10:36 pm — 6:43 am UA341 United Airlines Seattle — Newark 59m stop 8:25 am — 8:35 pm UA934 United Airlines Newark — London	13h 15m including layover	Find flight from$431
12:20 pm — 10:15 am +1 day	12:20 pm — 8:32 pm UA2033 United Airlines Seattle — Newark 1h 28m stop 10:00 pm — 10:15 am UA940 United Airlines Newark — London	13h 55m including layover	Find flight from$485
12:35 pm — 9:40 am +1 day	12:35 pm — 4:17 pm UA1483 United Airlines Seattle — Denver 1h 18m stop 5:35 pm — 9:40 am UA27 United Airlines Denver — London	13h 5m including layover	Find flight from$431
2:00 pm — 12:45 pm +1 day	2:00 pm — 9:10 am UA8718 United Airlines Seattle — Frankfurt 2h 50m stop 12:00 pm — 12:45 pm UA8815 United Airlines Frankfurt — London	14h 45m including layover	Find flight from$497
3:04 pm — 1:30 pm +1 day	3:04 pm — 5:48 pm UA2610 United Airlines Seattle — Los Angeles 1h 12m stop 7:00 pm — 1:30 pm UA923 United Airlines Los Angeles — London	14h 26m including layover	Find flight from$485
5:02 am — 9:40 am +1 day	5:02 am — 8:44 am UA2269 United Airlines Seattle — Denver 8h 51m stop 5:35 pm — 9:40 am UA27 United Airlines Denver — London	20h 38m including layover	Find flight from$485
5:45 am — 10:10 am +1 day	5:45 am — 6:52 am UA6614 United Airlines Seattle — Vancouver 9h 48m stop 4:40 pm — 10:10 am UA8582 United Airlines Vancouver — London	20h 25m including layover	Find flight from$485
7:00 am — 7:55 am +1 day	7:00 am — 1:06 pm UA1373 United Airlines Seattle — Chicago 4h 44m stop 5:50 pm — 7:55 am UA920 United Airlines Chicago — London	16h 55m including layover	Find flight from$482
7:15 am — 7:25 am +1 day	7:05 am — 9:25 am UA1403 United Airlines Seattle — San Francisco 3h 14m stop 12:50 pm — 7:25 am UA901 United Airlines San Francisco — London	16h 10m including layover	Find flight from$482
8:10 am — 6:40 am +1 day	8:10 am — 4:09 pm UA1102 United Airlines Seattle — Washington D.C. 2h 16m stop 6:25 pm — 6:40 am UA918 United Airlines Washington D.C. — London	14h 30m including layover	Find flight from$485
9:00 am — 9:40 am +1 day	8:30 am — 12:14 pm UA1829 United Airlines Seattle — Denver 4h 52m stop 5:35 pm — 9:40 am UA27 United Airlines Denver — London	16h 40m including layover	Find flight from$427
3:25 pm — 8:35 pm +1 day	3:25 pm — 5:44 pm UA589 United Airlines Seattle — San Francisco 3h 41m stop 9:25 pm — 5:59 am UA1555 United Airlines San Francisco — Newark 2h 26m stop 8:25 am — 8:35 pm UA934 United Airlines Newark — London	21h 10m including layover	Find flight from$431
6:13 pm — 8:35 pm +1 day	6:13 pm — 8:32 pm UA737 United Airlines Seattle — San Francisco 2h 8m stop 10:40 pm — 7:05 am UA1318 United Airlines San Francisco — Newark 1h 20m stop 8:25 am — 8:35 pm UA934 United Airlines Newark — London	18h 22m including layover	Find flight from$431
6:13 pm — 8:35 pm +1 day	6:13 pm — 8:32 pm UA737 United Airlines Seattle — San Francisco 53m stop 9:25 pm — 5:59 am UA1555 United Airlines San Francisco — Newark 2h 26m stop 8:25 am — 8:35 pm UA934 United Airlines Newark — London	18h 22m including layover	Find flight from$431

Departure	Arrival	Flight Details	Flight Time	Price
		stop stop	including layover	Find flight from$

*Departure and arrival times are local. Last updated on 01/21/2025

Flight Information

There are 26 flights by United Airlines from Seattle to London every week with departures from Seattle-Tacoma Intl, Boeing Field International Airport, Kenmore Air Harbor SPB. All flights arrive at Gatwick, London City, Heathrow, Luton, Stansted, Stratford International Rail St, Ebbsfleet International Rail St, London Biggin Hill, London-Waterloo, British Rail Terminal.

Departures start from 10:35 am to 9:00 am. Nonstop flight is 12h 50m. The time difference between Seattle and London is 8h.

The fastest flight 12h 50m
Average flight time 15h 23m
The earliest flight 10:35 am
The latest flight 9:00 am
Distance 4794 ml

The cheapest months for traveling to London are january (from 427 $), february (from 431 $), november (from 473 $).

The most expensive and popular months are december (from 476 $), november (from 473 $), february (from 431 $).

The cheapest flight by United Airlines that our users were able to find is $427. This airfare is economy class on one-way UA8242 flight for January 22, 2025 leaving Seattle-Tacoma Intl in Seattle at 10:35 am, it includes all taxes and additional fees.

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United Airlines Airplanes on the Route

List of the most popular United Airlines airplanes flying from Seattle to London:

Other Popular Airlines on the Route

Besides United Airlines there are other 20 airline carriers between Seattle and London. Please review schedules and prices from the most popular airlines to find the best airfare deals from Seattle to London.

Nonstop flights

There are 8 direct flights every day from Seattle. Airlines and fares are below:

AS - Alaska Airlines

from $513

Find
AY - Finnair

from $528

Find
IB - Iberia

from $411

Find
BA - British Airways

from $384

Find

See more direct flights

Connecting Flights

List of flights with layovers (1 and more stops):

DE - Condor Airlines

from $486

Find
AC - Air Canada

from $285

Find
EI - Aer Lingus

from $523

Find
AS - Alaska Airlines

from $248

Find
LH - Lufthansa

from $398

Find
FI - Icelandair

from $199

Find
OS - Austrian Airlines

from $559

Find
OZ - Asiana Airlines

from $5826

Find
LX - SWISS International Air Lines

from $435

Find
F9 - Frontier Airlines

from $306

Find
TK - Turkish Airlines

from $654

Find

See more connecting flights

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