Users have found that booking a flight from Seattle to Illinois at least 42 days early can save you up to 98% on average compared to booking a flight this week. If booking 42 days before your flight isn’t an option for you, users have found flights from Seattle to Illinois for as little as $328 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
$139 - $186
Route
Depart
Return
Price
Seattle/Tacoma IntlChicago O'Hare Intl
SEA - ORD
SEAORD
Seattle/Tacoma Intl
Tue 6/4
Nonstop4h 15m
Chicago O'Hare Intl
Tue 6/11
1 stop12h 31m
Seattle/Tacoma IntlLambert-St Louis
SEA - STL
SEASTL
Seattle/Tacoma Intl
Tue 6/11
1 stop13h 24m
Lambert-St Louis
Tue 6/18
1 stop17h 19m
Seattle/Tacoma IntlChicago O'Hare Intl
SEA - ORD
SEAORD
Seattle/Tacoma Intl
Tue 6/4
1 stop6h 56m
Chicago O'Hare Intl
Tue 6/11
1 stop12h 31m
Seattle/Tacoma IntlChicago O'Hare Intl
SEA - ORD
SEAORD
Seattle/Tacoma Intl
Tue 10/8
Nonstop3h 58m
Chicago O'Hare Intl
Tue 10/15
Nonstop4h 39m
Seattle/Tacoma IntlChicago O'Hare Intl
SEA - ORD
SEAORD
Seattle/Tacoma Intl
Wed 10/16
Nonstop4h 04m
Chicago O'Hare Intl
Wed 10/23
Nonstop4h 33m
Seattle/Tacoma IntlChicago O'Hare Intl
SEA - ORD
SEAORD
Seattle/Tacoma Intl
Wed 8/28
1 stop9h 45m
Chicago O'Hare Intl
Tue 9/3
Nonstop4h 33m
Seattle/Tacoma IntlChicago O'Hare Intl
SEA - ORD
SEAORD
Seattle/Tacoma Intl
Wed 5/29
1 stop14h 39m
Chicago O'Hare Intl
Mon 6/3
1 stop26h 29m
Seattle/Tacoma IntlChicago O'Hare Intl
SEA - ORD
SEAORD
Seattle/Tacoma Intl
Tue 9/17
1 stop8h 15m
Chicago O'Hare Intl
Tue 9/24
Nonstop4h 34m
Seattle/Tacoma IntlChicago O'Hare Intl
SEA - ORD
SEAORD
Seattle/Tacoma Intl
Mon 7/8
1 stop16h 00m
Chicago O'Hare Intl
Thu 7/11
1 stop14h 07m
No data available for this route at this time. Please check back soon.
Crew
Comfort
Entertainment
Overall
Boarding
Food
Reviews
I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.
Crew
Comfort
Entertainment
Overall
Boarding
Food
Reviews
I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.
Crew
Comfort
Entertainment
Overall
Boarding
Food
Reviews
I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.
Crew
Comfort
Entertainment
Overall
Boarding
Food
Reviews
I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.
Crew
Comfort
Entertainment
Overall
Boarding
Food
Reviews
I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.
Crew
Comfort
Entertainment
Overall
Boarding
Food
Reviews
I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.
6%of flight departures | Early morningMidnight to 6 am |
---|---|
39%of flight departures | Morning6 am to noon |
31%of flight departures | AfternoonNoon to 6 pm |
24%of flight departures | Evening6 pm to midnight |
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