
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $157 (Kiwi.com) |
One-way from | $60 (Kiwi.com) |
Popular in | December |
Cheapest in | February |
Average price | $276 |
Good round-trip deal | $288 or less |
Good one-way deal | $140 or less |
Fly from
Fly to
Route
Depart
Return
Price
SeattleChicago
SEA - ORD
SEAORD
Seattle/Tacoma Intl
Sun 3/1
7:10 am-1:22 pm
Nonstop4h 12m
Chicago O'Hare Intl
Mon 3/9
7:25 am-10:03 am
Nonstop4h 38m
SeattleChicago
SEA - ORD
SEAORD
Seattle/Tacoma Intl
Thu 2/26
11:59 pm-5:56 am
Nonstop3h 57m
Chicago O'Hare Intl
Thu 3/5
8:01 pm-10:45 pm
Nonstop4h 44m
SeattleChicago
SEA - MDW
SEAMDW
Seattle/Tacoma Intl
Thu 3/12
5:15 am-11:10 am
Nonstop3h 55m
Chicago Midway
Mon 3/16
9:55 pm-12:30 am
Nonstop4h 35m
SeattleChicago
SEA - MDW
SEAMDW
Seattle/Tacoma Intl
Fri 3/20
11:55 pm-5:50 am
Nonstop3h 55m
Chicago Midway
Sun 3/22
9:45 pm-12:20 am
Nonstop4h 35m
SeattleSt. Louis
SEA - STL
SEASTL
Seattle/Tacoma Intl
Wed 4/8
5:30 am-1:17 pm
1 stop5h 47m
Lambert-St Louis
Wed 4/22
6:45 pm-11:59 pm
1 stop7h 14m
SeattleChicago
SEA - MDW
SEAMDW
Seattle/Tacoma Intl
Fri 2/27
7:25 am-1:30 pm
Nonstop4h 05m
Chicago Midway
Sun 3/1
11:00 am-1:35 pm
Nonstop4h 35m
SeattleChicago
SEA - MDW
SEAMDW
Seattle/Tacoma Intl
Wed 3/11
11:55 pm-5:50 am
Nonstop3h 55m
Chicago Midway
Sun 3/15
9:45 pm-12:20 am
Nonstop4h 35m
SeattleSt. Louis
SEA - STL
SEASTL
Seattle/Tacoma Intl
Wed 3/25
1:32 pm-12:21 am
1 stop8h 49m
Lambert-St Louis
Mon 3/30
6:12 pm-12:03 am
1 stop7h 51m
SeattleChicago
SEA - MDW
SEAMDW
Seattle/Tacoma Intl
Thu 3/12
7:55 pm-5:00 am
1 stop7h 05m
Chicago Midway
Sun 3/15
9:45 pm-12:20 am
Nonstop4h 35m
SeattleChicago
SEA - MDW
SEAMDW
Seattle/Tacoma Intl
Sun 3/1
7:25 am-1:30 pm
Nonstop4h 05m
Chicago Midway
Wed 4/1
5:45 am-1:50 pm
1 stop10h 05m
Currently, February is the cheapest month in which you can book a flight from State of Washington to Illinois (average of $114). Flying from State of Washington to Illinois in July is currently the most expensive (average of $169). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
When flying from State of Washington to Illinois, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 15% versus a flight in the evening.
Travelers seeking maximum savings on their State of Washington to Illinois flight should consider departing on Saturday afternoons when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
The most flights from USWA to USIL are scheduled on a Monday (38 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (24 on average).
Boarding
Comfort
Entertainment
Crew
Overall
Food
Reviews
Anonymous,Dec 2025
SEA - MSY
Boarding
Comfort
Entertainment
Crew
Overall
Food
Reviews
Anonymous,Dec 2025
SEA - MSY
Boarding
Comfort
Entertainment
Crew
Overall
Food
Reviews
Anonymous,Dec 2025
SEA - MSY
Boarding
Comfort
Entertainment
Crew
Overall
Food
Reviews
Anonymous,Dec 2025
SEA - MSY
Boarding
Comfort
Entertainment
Crew
Overall
Food
Reviews
Anonymous,Dec 2025
SEA - MSY
Boarding
Comfort
Entertainment
Crew
Overall
Food
Reviews
Anonymous,Dec 2025
SEA - MSY
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$97 | Average$327 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$114 | Average$258 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$137 | Average$271 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$154 | Average$419 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$169 | Average$436 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$178 | Average$424 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$184 | Average$349 | FlexibilityNo cancel fee | On-time63% |