How to find the cheapest flight from
Billings (BIL) to Illinois
How far in advance should I book a flight from Billings to Illinois?
Find a great deal and save up to 10% by booking at least 37 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Billings to Illinois within the next two weeks, with the cheapest ticket starting at $177.
One-way flights to Illinois from Billings
The cheapest one-way flights from Billings to Illinois
8:50 am - 10:02 am
8:50 am - 5:37 pm
Related info for your journey
Useful info, stats and facts about Billings to Illinois flights.
Arrival points for flights from Billings to Illinois
Destination information for Illinois
Things to know before you go. Useful info for your trip from Billings to Illinois