How to find the cheapest flight from
Connecticut to Illinois
How far in advance should I book a flight from Connecticut to Illinois?
To save on the cost of your flight from Connecticut to Illinois, book at least 37 days before your planned departure. Booking around this time can save you about 10% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $177 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $177.
One-way flights to Illinois from Connecticut
The cheapest one-way flights from Connecticut to Illinois
2:55 pm - 2:19 pm
4:00 am - 10:10 am
2:00 am - 5:27 am
Related info for your journey
Useful info, stats and facts about Connecticut to Illinois flights.
Destination information for Illinois
Things to know before you go. Useful info for your trip from Connecticut to Illinois