To save up to 32% on this flight, we recommend booking at least 41 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Illinois to Pittsburgh from $238 1-2 weeks out and tickets from $307 for flights departing within the next 72 hours.
The best pricing can be found in the month of February. Prices to Pittsburgh from Illinois average $220. You can even find prices in February for less than $220, as users have found deals to Pittsburgh from as low as $142. The month of December appears to be one of the more expensive times to travel to Pittsburgh from Illinois. Flying in the targeted month can save you up to 29%.