United Airlines Chicago to Seattle Flights

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Cheapflightsplus.com will find cheap United Airlines flights from Chicago to Seattle. Compare airline ticket prices and book air tickets starting from $135 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 Chicago (IL) — 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 august: one-way - $135, two-way – $232.

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Cheap Flights from Chicago to Seattle by United Airlines

Look at the list of plane tickets for the most popular direct and connecting flights by United Airlines, their prices start from $135. The fastest nonstop flight takes 4h 40m. The fastest connecting flight — 6h 33m.

Price	Departure	Arrival	Flight Time	Airline	Flight
from $135 Find flight	9:16 pm Chicago O'Hare International	11:59 pm Seattle Seattle-Tacoma Intl	4h 43m	United Airlines	UA1001
from $135 Find flight	9:16 pm Chicago O'Hare International	11:59 pm Seattle Seattle-Tacoma Intl	4h 43m	United Airlines	UA2200
from $137 Find flight	9:00 am Chicago O'Hare International	11:43 am Seattle Seattle-Tacoma Intl	4h 43m	United Airlines	UA1620
from $149 Find flight	7:10 am Chicago O'Hare International	9:50 am Seattle Seattle-Tacoma Intl	4h 40m	United Airlines	UA2038
from $181 Find flight	4:05 pm Chicago O'Hare International	6:46 pm Seattle Seattle-Tacoma Intl	4h 41m	United Airlines	UA1755
from $173 Find flight	5:56 pm Chicago O'Hare International	0:56 am+1 день Seattle Seattle-Tacoma Intl	9h 0m layover 1h 11m - Washington D.C.	United Airlines	UA2677 UA716
from $173 Find flight	6:20 pm Chicago O'Hare International	0:59 am+1 день Seattle Seattle-Tacoma Intl	8h 39m layover 1h 46m - San Francisco	United Airlines	UA2179 UA2400
from $179 Find flight	7:10 am Chicago O'Hare International	1:46 pm Seattle Seattle-Tacoma Intl	8h 36m layover 1h 14m - Los Angeles	United Airlines	UA2361 UA357
from $179 Find flight	6:10 am Chicago O'Hare International	1:46 pm Seattle Seattle-Tacoma Intl	9h 36m layover 2h 15m - Los Angeles	United Airlines	UA1224 UA357
from $182 Find flight	3:55 pm Chicago O'Hare International	9:17 pm Seattle Seattle-Tacoma Intl	7h 22m layover 1h 35m - Denver	United Airlines	UA767 UA1729
from $182 Find flight	2:21 pm Chicago O'Hare International	10:46 pm Seattle Seattle-Tacoma Intl	10h 25m layover 2h 27m - Houston	United Airlines	UA1373 UA2456
from $182 Find flight	10:35 am Chicago O'Hare International	6:25 pm Seattle Seattle-Tacoma Intl	9h 50m layover 2h 45m - San Francisco	United Airlines	UA343 UA2279
from $182 Find flight	10:35 am Chicago O'Hare International	4:15 pm Seattle Seattle-Tacoma Intl	7h 40m layover 0h 35m - San Francisco	United Airlines	UA343 UA1008
from $182 Find flight	4:17 pm Chicago O'Hare International	0:59 am+1 день Seattle Seattle-Tacoma Intl	10h 42m layover 3h 37m - San Francisco	United Airlines	UA2693 UA2462
from $224 Find flight	1:05 pm Chicago O'Hare International	8:48 pm Seattle Seattle-Tacoma Intl	9h 43m layover 1h 45m - Washington D.C.	United Airlines	UA1140 UA326
from $265 Find flight	9:32 pm Chicago O'Hare International	8:01 am+1 день Seattle Seattle-Tacoma Intl	12h 29m layover 6h 38m - Denver	United Airlines	UA1748 UA751

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*Departure and arrival times are local. Prices are for one-way flights. Information refreshed on 08/17/2025

United Airlines Flight Schedule Chicago 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
4:05 pm — 6:46 pm	4:05 pm — 6:46 pm UA1755 United Airlines Chicago — Seattle	4h 41m	Find flight from$181
7:10 am — 9:50 am	7:10 am — 9:50 am UA2038 United Airlines Chicago — Seattle	4h 40m	Find flight from$149
9:00 am — 11:43 am	9:00 am — 11:43 am UA1620 United Airlines Chicago — Seattle	4h 43m	Find flight from$137
9:16 pm — 11:59 pm	9:16 pm — 11:59 pm UA1001 United Airlines Chicago — Seattle	4h 43m	Find flight from$135
9:16 pm — 11:59 pm	9:16 pm — 11:59 pm UA2200 United Airlines Chicago — Seattle	4h 43m	Find flight from$135
10:35 am — 6:25 pm	10:35 am — 1:25 pm UA343 United Airlines Chicago — San Francisco 2h 45m stop 4:10 pm — 6:25 pm UA2279 United Airlines San Francisco — Seattle	9h 50m including layover	Find flight from$182
10:35 am — 4:15 pm	10:35 am — 1:25 pm UA343 United Airlines Chicago — San Francisco 35m stop 2:00 pm — 4:15 pm UA1008 United Airlines San Francisco — Seattle	7h 40m including layover	Find flight from$182
12:45 pm — 7:25 pm	12:45 pm — 3:45 pm UA2657 United Airlines Chicago — Houston 40m stop 4:25 pm — 7:25 pm UA659 United Airlines Houston — Seattle	8h 40m including layover	Find flight from$265
12:45 pm — 10:59 pm	12:45 pm — 2:43 pm UA2616 United Airlines Chicago — Denver 6h 9m stop 8:52 pm — 10:59 pm UA2651 United Airlines Denver — Seattle	12h 14m including layover	Find flight from$391
1:00 pm — 8:54 pm	1:00 pm — 3:55 pm UA2746 United Airlines Chicago — Washington D.C. 2h stop 5:55 pm — 8:54 pm UA326 United Airlines Washington D.C. — Seattle	9h 54m including layover	Find flight from$182
1:05 pm — 8:48 pm	1:05 pm — 4:10 pm UA1140 United Airlines Chicago — Washington D.C. 1h 45m stop 5:55 pm — 8:48 pm UA326 United Airlines Washington D.C. — Seattle	9h 43m including layover	Find flight from$224
2:21 pm — 10:46 pm	2:21 pm — 5:23 pm UA1373 United Airlines Chicago — Houston 2h 27m stop 7:50 pm — 10:46 pm UA2456 United Airlines Houston — Seattle	10h 25m including layover	Find flight from$182
2:40 pm — 9:13 pm	2:40 pm — 4:30 pm UA1485 United Airlines Chicago — Denver 2h 40m stop 7:10 pm — 9:13 pm UA1729 United Airlines Denver — Seattle	8h 33m including layover	Find flight from$182
3:40 pm — 10:30 pm	3:40 pm — 6:15 pm UA2124 United Airlines Chicago — Los Angeles 1h 10m stop 7:25 pm — 10:30 pm UA5655 United Airlines Los Angeles — Seattle	8h 50m including layover	Find flight from$230
3:55 pm — 9:17 pm	1:55 pm — 3:45 pm UA767 United Airlines Chicago — Denver 1h 35m stop 7:10 pm — 9:13 pm UA1729 United Airlines Denver — Seattle	7h 22m including layover	Find flight from$182
4:17 pm — 0:59 am +1 day	4:17 pm — 7:07 pm UA2693 United Airlines Chicago — San Francisco 3h 37m stop 10:44 pm — 0:59 am UA2462 United Airlines San Francisco — Seattle	10h 42m including layover	Find flight from$182
5:16 pm — 0:59 am +1 day	5:16 pm — 8:08 pm UA448 United Airlines Chicago — San Francisco 2h 36m stop 10:44 pm — 0:59 am UA2462 United Airlines San Francisco — Seattle	9h 43m including layover	Find flight from$230
5:56 pm — 0:56 am +1 day	5:56 pm — 8:55 pm UA2677 United Airlines Chicago — Washington D.C. 1h 11m stop 10:06 pm — 0:56 am UA716 United Airlines Washington D.C. — Seattle	9h including layover	Find flight from$173
6:10 am — 1:46 pm	6:10 am — 8:39 am UA1224 United Airlines Chicago — Los Angeles 2h 15m stop 10:54 am — 1:46 pm UA357 United Airlines Los Angeles — Seattle	9h 36m including layover	Find flight from$179
6:20 pm — 0:59 am +1 day	6:20 pm — 9:09 pm UA2179 United Airlines Chicago — San Francisco 1h 46m stop 10:55 pm — 0:59 am UA2400 United Airlines San Francisco — Seattle	8h 39m including layover	Find flight from$173
7:10 am — 1:46 pm	7:10 am — 9:40 am UA2361 United Airlines Chicago — Los Angeles 1h 14m stop 10:54 am — 1:46 pm UA357 United Airlines Los Angeles — Seattle	8h 36m including layover	Find flight from$179
8:47 am — 1:54 pm	8:47 am — 10:35 am UA2131 United Airlines Chicago — Denver 1h 15m stop 11:50 am — 1:54 pm UA1424 United Airlines Denver — Seattle	7h 7m including layover	Find flight from$230
8:52 am — 3:53 pm	8:52 am — 11:55 am UA2277 United Airlines Chicago — Washington D.C. 1h 10m stop 1:05 pm — 3:53 pm UA1395 United Airlines Washington D.C. — Seattle	9h 1m including layover	Find flight from$243

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

*Departure and arrival times are local. Last updated on 08/17/2025

Flight Information

There are 5 flights by United Airlines from Chicago to Seattle every week with departures from Chicago FSS, Midway, O'Hare International, Chicago NAS, Merrill C Meigs (closed), Dupage County, Pal-Waukee. All flights arrive at Seattle-Tacoma Intl, Boeing Field International Airport, Kenmore Air Harbor SPB.

Departures start from 10:00 pm to 9:50 pm. Nonstop flight is 4h 40m. The time difference between Chicago and Seattle is 2h.

The fastest flight 4h 40m
Average flight time 4h 43m
The earliest flight 10:00 pm
The latest flight 9:50 pm
Distance 1732 ml

The cheapest months for traveling to Seattle are july (from 135 $), august (from 135 $), june (from 136 $).

The most expensive and popular months are may (from 788 $), september (from 275 $), december (from 181 $).

The cheapest flight by United Airlines that our users were able to find is $135. This airfare is economy class on one-way UA1001 flight for July 31, 2025 leaving O'Hare International in Chicago at 9:16 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 Chicago to Seattle:

Other Popular Airlines on the Route

Besides United Airlines there are other 7 airline carriers between Chicago and Seattle. Please review schedules and prices from the most popular airlines to find the best airfare deals from Chicago to Seattle.

Nonstop flights

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

AS - Alaska Airlines

from $324

Find
HA - Hawaiian Airlines

from $320

Find

See more direct flights

Connecting Flights

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

F9 - Frontier Airlines

from $121

Find
AS - Alaska Airlines

from $111

Find
SY - Sun Country Airlines

from $187

Find
TK - Turkish Airlines

from $1896

Find
HA - Hawaiian Airlines

from $102

Find
G4 - Allegiant Air

from $165

Find
NK - Spirit Airlines

from $168

Find

See more connecting flights

How to book an air ticket yourself?

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