August is the cheapest month to fly this route, with average fares around $210 round trip.
Average round-trip fares by departure month, based on current availability.
| Month | Avg Price | Lowest | Relative Cost | |
|---|---|---|---|---|
| May 2026 | $249 | $210 | Peak | |
| June 2026 | $219 | $190 | ||
| July 2026 | $223 | $190 | ||
| August 2026 | $210 | $190 | Best |
Departing on Wednesday offers the lowest average fares at $199. Thursday departures are the most expensive at $237, a difference of $38.
The best time to fly is August. Set up an alert and we'll notify you when prices drop.
Get Started Free →The cheapest month to fly from Austin to Chicago is August, with average round-trip fares around $210. The lowest fare found in August is $190.
Wednesday departures are the cheapest, averaging $199 round trip. The most expensive day is Thursday at $237.
Based on current pricing trends, booking for August travel offers the best value. Avoid May if possible, as fares average $249 compared to $210 in the cheapest month. July is a solid middle-ground option at $223.
Flying in August instead of May can save you approximately $39 per round trip. The cheapest month averages $210 while the most expensive averages $249.
Airlines, flight times, price calendar, and more for Austin to Chicago
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