How to find the cheapest flight from
Illinois to San Antonio (SAT)
How far in advance should I book a flight from Illinois to San Antonio?
To save on the cost of your flight from Illinois to San Antonio, book at least 35 days before your planned departure. Booking around this time can save you about 34% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $146 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $182.
One-way flights to San Antonio from Illinois
The cheapest one-way flights from Illinois to San Antonio
12:30 am - 6:16 am
1:55 pm - 11:50 am
6:18 am - 4:48 pm
Related info for your journey
Useful info, stats and facts about Illinois to San Antonio flights.
Arrival points for flights from Illinois to San Antonio
Destination information for San Antonio
Things to know before you go. Useful info for your trip from Illinois to San Antonio