Users have found that booking a flight from Seattle to Illinois at least 27 days early can save you up to 86% on average compared to booking a flight this week. If booking 27 days before your flight isn’t an option for you, users have found flights from Seattle to Illinois for as little as $338 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $594 for flights departing within the next 3 days.
Flights from Seattle to Illinois lean towards being more expensive in July. Prices are generally better when you fly from Seattle to Illinois in February, with the cheapest ticket starting at $69.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Illinois as you normally would.
Fly from
Fly to
Budget
$149 - $235
Route
Depart
Return
Price
Seattle/Tacoma IntlChicago O'Hare Intl
SEA - ORD
SEAORD
Seattle/Tacoma Intl
mié. 8/28
Nonstop4h 09m
Chicago O'Hare Intl
mar. 9/3
Nonstop4h 46m
Seattle/Tacoma IntlChicago O'Hare Intl
SEA - ORD
SEAORD
Seattle/Tacoma Intl
mar. 8/20
1 stop9h 45m
Chicago O'Hare Intl
sáb. 8/24
Nonstop4h 37m
Seattle/Tacoma IntlChicago Greater Rockford
SEA - RFD
SEARFD
Seattle/Tacoma Intl
mié. 9/11
1 stop24h 00m
Chicago Greater Rockford
dom. 9/15
1 stop22h 18m
Seattle/Tacoma IntlLambert-St Louis
SEA - STL
SEASTL
Seattle/Tacoma Intl
mié. 9/4
1 stop18h 16m
Lambert-St Louis
lun. 9/9
1 stop23h 43m
Seattle/Tacoma IntlChicago O'Hare Intl
SEA - ORD
SEAORD
Seattle/Tacoma Intl
vie. 8/16
Nonstop3h 58m
Chicago O'Hare Intl
sáb. 8/24
Nonstop4h 37m
Seattle/Tacoma IntlChicago O'Hare Intl
SEA - ORD
SEAORD
Seattle/Tacoma Intl
mar. 8/13
1 stop7h 30m
Chicago O'Hare Intl
mié. 8/14
Nonstop4h 34m
Seattle/Tacoma IntlChicago O'Hare Intl
SEA - ORD
SEAORD
Seattle/Tacoma Intl
sáb. 9/7
1 stop15h 17m
Chicago O'Hare Intl
mar. 9/17
1 stop25h 31m
Seattle/Tacoma IntlChicago O'Hare Intl
SEA - ORD
SEAORD
Seattle/Tacoma Intl
vie. 9/6
Nonstop3h 56m
Chicago O'Hare Intl
lun. 9/9
Nonstop4h 47m
Seattle/Tacoma IntlChicago O'Hare Intl
SEA - ORD
SEAORD
Seattle/Tacoma Intl
vie. 7/5
1 stop9h 34m
Chicago O'Hare Intl
lun. 7/8
1 stop17h 07m
No data available for this route at this time. Please check back soon.
Comfort
Entertainment
Food
Boarding
Crew
Overall
Reviews
Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.
Comfort
Entertainment
Food
Boarding
Crew
Overall
Reviews
Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.
Comfort
Entertainment
Food
Boarding
Crew
Overall
Reviews
Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.
Comfort
Entertainment
Food
Boarding
Crew
Overall
Reviews
Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.
Comfort
Entertainment
Food
Boarding
Crew
Overall
Reviews
Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.
Comfort
Entertainment
Food
Boarding
Crew
Overall
Reviews
Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.
1%of flight departures | Early morningMidnight to 6 am |
---|---|
47%of flight departures | Morning6 am to noon |
38%of flight departures | AfternoonNoon to 6 pm |
14%of flight departures | Evening6 pm to midnight |
Cheapflights helps you search for flights from Seattle to Illinois via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.
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Yes, we can. To see specific flights from Seattle to Illinois with no change fees, users can toggle flexible booking options after using the search form above to find flights.
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