Find Cheap Flights from Chicago O'Hare International to Seattle

Depart
Return
1 adult
Adults
18-64
Seniors
65+
Youths
12-17
Children
2-11
Seat Infants
under 2
Lap Infants
under 2
The price shown for each flight will be the average for all passengers including any infants.
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Book cheap flights from Chicago O'Hare International to Seattle

(Round-trip)
Depart: Wed Aug 30 2017 Return: Wed Sep 6 2017 Trip spans 8 days
Frontier
Frontier
ORD
8:25a
SEA
7:31p
11h 06m
1 stop
SEA
6:55a
ORD
3:38p
8h 43m
1 stop
Depart: Sun Apr 30 2017 Return: Mon May 1 2017 Trip spans 2 days
Major Airline
Major Airline
ORD
1:15a
SEA
4:12a
26h 57m
1 stop
SEA
9:43a
ORD
6:42a
20h 59m
1 stop
Depart: Sun Jul 2 2017 Return: Mon Jul 10 2017 Trip spans 9 days
United
United
ORD
3:00a
SEA
7:28a
4h 28m
nonstop
SEA
8:50p
ORD
12:37a
3h 47m
nonstop
Depart: Sat Aug 5 2017 Return: Mon Aug 7 2017 Trip spans 3 days
Delta
Delta
ORD
1:55p
SEA
6:30p
4h 35m
nonstop
SEA
1:00p
ORD
5:05p
4h 05m
nonstop
Depart: Wed May 10 2017 Return: Mon May 15 2017 Trip spans 6 days
Spirit Airlines
Spirit Airlines
ORD
5:31a
SEA
9:56p
16h 25m
1 stop
SEA
5:59p
ORD
9:32a
15h 33m
1 stop
Depart: Tue Jun 6 2017 Return: Tue Jun 20 2017 Trip spans 15 days
American Airlines
American Airlines
ORD
5:10a
SEA
2:49p
9h 39m
1 stop
SEA
1:25p
ORD
5:23p
3h 58m
nonstop
Depart: Thu Aug 24 2017 Return: Sat Aug 26 2017 Trip spans 3 days
Alaska Airlines
Alaska Airlines
ORD
2:00a
SEA
6:26a
4h 26m
nonstop
SEA
8:35p
ORD
12:20a
3h 45m
nonstop
Depart: Mon May 1 2017 Return: Tue May 2 2017 Trip spans 2 days
Frontier
Frontier
ORD
12:40p
SEA
7:35p
6h 55m
1 stop
SEA
6:55a
ORD
3:34p
8h 39m
1 stop
Depart: Wed Jun 21 2017 Return: Wed Jun 28 2017 Trip spans 8 days
Major Airline
Major Airline
ORD
11:20a
SEA
3:57p
4h 37m
nonstop
SEA
9:30a
ORD
1:31p
4h 01m
nonstop
Depart: Wed Aug 9 2017 Return: Wed Aug 16 2017 Trip spans 8 days
Delta
Delta
ORD
1:55p
SEA
6:30p
4h 35m
nonstop
SEA
3:40a
ORD
7:45a
4h 05m
nonstop
Depart: Thu Jun 22 2017 Return: Sat Jun 24 2017 Trip spans 3 days
United
United
ORD
7:31p
SEA
11:58p
4h 27m
nonstop
SEA
11:52a
ORD
7:47p
7h 55m
1 stop
Depart: Wed May 3 2017 Return: Fri May 5 2017 Trip spans 3 days
Frontier
Frontier
ORD
12:40p
SEA
7:35p
6h 55m
1 stop
SEA
5:58a
ORD
3:13p
9h 15m
1 stop
Depart: Wed Jun 7 2017 Return: Wed Jun 21 2017 Trip spans 15 days
American Airlines
American Airlines
ORD
3:22a
SEA
2:49p
11h 27m
1 stop
SEA
1:25p
ORD
5:23p
3h 58m
nonstop
Depart: Sat May 6 2017 Return: Tue May 9 2017 Trip spans 4 days
Spirit Airlines
Spirit Airlines
ORD
12:32p
SEA
6:55a
18h 23m
1 stop
SEA
11:23a
ORD
12:27a
13h 04m
1 stop
Depart: Wed Jun 28 2017 Return: Wed Jul 5 2017 Trip spans 8 days
Major Airline
Major Airline
ORD
11:20a
SEA
3:57p
4h 37m
nonstop
SEA
4:10a
ORD
8:23a
4h 13m
nonstop
Depart: Sat Aug 12 2017 Return: Mon Aug 14 2017 Trip spans 3 days
Delta
Delta
ORD
1:55p
SEA
6:30p
4h 35m
nonstop
SEA
1:00p
ORD
5:05p
4h 05m
nonstop
Depart: Tue Jun 13 2017 Return: Tue Jun 20 2017 Trip spans 8 days
American Airlines
American Airlines
ORD
3:22a
SEA
2:49p
11h 27m
1 stop
SEA
1:25p
ORD
5:23p
3h 58m
nonstop
Depart: Tue May 2 2017 Return: Tue May 16 2017 Trip spans 15 days
Frontier
Frontier
ORD
12:40p
SEA
8:15a
19h 35m
1 stop
SEA
7:00a
ORD
3:13p
8h 13m
1 stop
Depart: Fri Sep 1 2017 Return: Sun Sep 10 2017 Trip spans 10 days
Alaska Airlines
Alaska Airlines
ORD
2:00a
SEA
6:30a
4h 30m
nonstop
SEA
8:35p
ORD
12:20a
3h 45m
nonstop
Depart: Tue Aug 8 2017 Return: Wed Aug 9 2017 Trip spans 2 days
Major Airline
Major Airline
ORD
11:20a
SEA
3:59p
4h 39m
nonstop
SEA
4:10a
ORD
8:22a
4h 12m
nonstop
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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At KAYAK we don’t set the prices, so it’s not possible for us to guarantee what other companies are selling.

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Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

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Airports
Origin

Chicago
$245
Destination

Seattle
$245
Airlines Airline reviews

323 travelers who booked a flight from Chicago to Seattle rated their chosen airlines with an average of 6.8.

Overall
6.9
Boarding
7.1
Crew
7.7
Comfort
6.7
Food
6.0
Entertainment
6.0