United Airlines London to Seattle Flights

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Cheapflightsplus.com will find cheap United Airlines flights from London to Seattle. Compare airline ticket prices and book air tickets starting from $878 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 London — Seattle (WA) 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 - $878, two-way – $1506.

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Cheap Flights from London to Seattle by United Airlines

Look at the list of plane tickets for the most connecting flights by United Airlines, their prices start from $878. There’re no direct flights. The fastest connecting flight – 13h 25m.

Price	Departure	Arrival	Flight Time	Airline	Flight
from $878 Find flight	1:00 pm London Heathrow	6:25 pm Seattle Seattle-Tacoma Intl	13h 25m layover 2h 35m - Vancouver	United Airlines	UA8581 UA8249
from $886 Find flight	7:40 am London Heathrow	1:20 pm Seattle Seattle-Tacoma Intl	13h 40m layover 1h 10m - Munich	United Airlines	UA8884 UA9414
from $889 Find flight	6:30 am London Heathrow	12:10 pm Seattle Seattle-Tacoma Intl	13h 40m layover 1h 15m - Frankfurt	United Airlines	UA9546 UA8717
from $1724 Find flight	11:10 am London Heathrow	9:30 pm Seattle Seattle-Tacoma Intl	18h 20m layover 4h 40m - Toronto	United Airlines	UA8203 UA8525
from $1737 Find flight	12:05 pm London Heathrow	8:31 pm Seattle Seattle-Tacoma Intl	16h 26m layover 1h 50m - Washington D.C.	United Airlines	UA919 UA326
from $1737 Find flight	1:35 pm London Heathrow	10:53 pm Seattle Seattle-Tacoma Intl	17h 18m layover 3h 4m - Chicago	United Airlines	UA959 UA2211
from $1741 Find flight	11:35 am London Heathrow	6:15 pm Seattle Seattle-Tacoma Intl	14h 40m layover 1h 45m - Denver	United Airlines	UA26 UA745
from $1741 Find flight	10:05 am London Heathrow	6:52 pm Seattle Seattle-Tacoma Intl	16h 47m layover 3h 17m - San Francisco	United Airlines	UA900 UA2603

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*Departure and arrival times are local. Prices are for one-way flights. Information refreshed on 12/22/2024

United Airlines Flight Schedule London to Seattle

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
10:05 am — 6:52 pm	10:05 am — 1:15 pm UA900 United Airlines London — San Francisco 3h 17m stop 4:32 pm — 6:52 pm UA2603 United Airlines San Francisco — Seattle	16h 47m including layover	Find flight from$1741
11:10 am — 9:30 pm	11:10 am — 2:25 pm UA8203 United Airlines London — Toronto 4h 40m stop 7:05 pm — 9:30 pm UA8525 United Airlines Toronto — Seattle	18h 20m including layover	Find flight from$1724
11:35 am — 6:15 pm	11:35 am — 2:25 pm UA26 United Airlines London — Denver 1h 45m stop 4:10 pm — 6:15 pm UA745 United Airlines Denver — Seattle	14h 40m including layover	Find flight from$1741
12:05 pm — 8:31 pm	12:05 pm — 3:40 pm UA919 United Airlines London — Washington D.C. 1h 50m stop 5:30 pm — 8:31 pm UA326 United Airlines Washington D.C. — Seattle	16h 26m including layover	Find flight from$1737
1:00 pm — 6:25 pm	1:00 pm — 2:50 pm UA8581 United Airlines London — Vancouver 2h 35m stop 5:25 pm — 6:32 pm UA8249 United Airlines Vancouver — Seattle	13h 25m including layover	Find flight from$878
1:00 pm — 10:00 pm	1:00 pm — 2:50 pm UA8581 United Airlines London — Vancouver 6h 10m stop 9:00 pm — 10:00 pm UA8669 United Airlines Vancouver — Seattle	17h including layover	Find flight from$1718
1:35 pm — 10:53 pm	1:35 pm — 5:00 pm UA959 United Airlines London — Chicago 3h 4m stop 8:04 pm — 10:53 pm UA2211 United Airlines Chicago — Seattle	17h 18m including layover	Find flight from$1737
6:30 am — 12:10 pm	6:30 am — 9:05 am UA9546 United Airlines London — Frankfurt 1h 15m stop 10:20 am — 12:10 pm UA8717 United Airlines Frankfurt — Seattle	13h 40m including layover	Find flight from$889
7:40 am — 1:20 pm	7:40 am — 10:30 am UA8884 United Airlines London — Munich 1h 10m stop 11:40 am — 1:20 pm UA9414 United Airlines Munich — Seattle	13h 40m including layover	Find flight from$886

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

*Departure and arrival times are local. Last updated on 12/22/2024

Flight Information

There are 10 flights by United Airlines from London to Seattle every week with departures from Gatwick, London City, Heathrow, Luton, Stansted, Stratford International Rail St, Ebbsfleet International Rail St, London Biggin Hill, London-Waterloo, British Rail Terminal. All flights arrive at Seattle-Tacoma Intl, Boeing Field International Airport, Kenmore Air Harbor SPB.

Departures start from 10:05 am to 7:40 am. Nonstop flight is 13h 25m. The time difference between London and Seattle is 8h.

The fastest flight 13h 25m
Average flight time 16h 26m
The earliest flight 10:05 am
The latest flight 7:40 am
Distance 4794 ml

The cheapest months for traveling to Seattle are november (from 843 $), december (from 859 $), january (from 878 $).

The most expensive and popular months are february (from 889 $), january (from 878 $), december (from 859 $).

The cheapest flight by United Airlines that our users were able to find is $878. This airfare is economy class on one-way UA8581 flight for January 12, 2025 leaving Heathrow in London at 1:00 pm, 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 London to Seattle:

Other Popular Airlines on the Route

Besides United Airlines there are other 32 airline carriers between London and Seattle. Please review schedules and prices from the most popular airlines to find the best airfare deals from London to Seattle.

Nonstop flights

There are 7 direct flights every day from London. Airlines and fares are below:

EI - Aer Lingus

from $1756

Find
AY - Finnair

from $1684

Find
IB - Iberia

from $870

Find
BA - British Airways

from $1569

Find

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Connecting Flights

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

IB - Iberia

from $683

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AC - Air Canada

from $1574

Find
EI - Aer Lingus

from $713

Find
LH - Lufthansa

from $615

Find
BA - British Airways

from $431

Find
W9 - Wizz Air UK

from $844

Find
VY - Vueling

from $366

Find
FI - Icelandair

from $469

Find
LX - SWISS International Air Lines

from $616

Find
A3 - Aegean Airlines

from $874

Find
DY - Norwegian

from $577

Find

See more connecting flights

How to book an air ticket yourself?

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