Currently, August is the cheapest month in which you can book a flight from St. Augustine to Chicago O'Hare Intl Airport (average of $245). Flying from St. Augustine to Chicago O'Hare Intl Airport in March is currently the most expensive (average of $321). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
It’s typically best to fly out from St. Augustine to Chicago O'Hare Intl Airport in the evening. Doing so could potentially save you 50% on the flight price compared to flying in the afternoon, which is usually more expensive.
Travelers seeking maximum savings on their St. Augustine to Chicago O'Hare Intl Airport flight should consider departing on Friday at noon when fares are most often at their lowest. Tuesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.