How to find the cheapest flight from
Pennsylvania to Illinois
How far in advance should I book a flight from Pennsylvania to Illinois?
Users have found that booking a flight from Pennsylvania to Illinois at least 37 days early can save you up to 10% on average compared to booking a flight this week. If booking 37 days before your flight isn’t an option for you, users have found flights from Pennsylvania to Illinois for as little as $177 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $177 for flights departing within the next 3 days.
One-way flights to Illinois from Pennsylvania
The cheapest one-way flights from Pennsylvania to Illinois
10:00 am - 6:34 pm
8:16 am - 9:43 am
Related info for your journey
Useful info, stats and facts about Pennsylvania to Illinois flights.
Destination information for Illinois
Things to know before you go. Useful info for your trip from Pennsylvania to Illinois