How to find the cheapest flight from
Oklahoma City (OKC) to Illinois
How far in advance should I book a flight from Oklahoma City to Illinois?
To save on the cost of your flight from Oklahoma City 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 Oklahoma City
The cheapest one-way flights from Oklahoma City to Illinois
12:24 pm - 1:30 pm
2:00 am - 8:57 am
Related info for your journey
Useful info, stats and facts about Oklahoma City to Illinois flights.
Arrival points for flights from Oklahoma City to Illinois
Destination information for Illinois
Things to know before you go. Useful info for your trip from Oklahoma City to Illinois