Flights from Boston to Illinois

Flight deals from Boston to Illinois

Looking for cheap tickets from Boston to Illinois, or a last-minute trip? Find the lowest prices on one-way and return tickets right here.

Flying from Boston to Illinois

Arm yourself with these facts on the fly.
Cheapest flight found78 €
Cheapest month to flyDecember
Average flight time2 hrs, 55 mins
Cheapest airport to fly fromBoston Logan International
Most popular airlineAmerican Airlines

Frequently asked questions

We looked at all of the upcoming return flights from Boston to Illinois we could find over the next 12 months. It looks like 78 € is the best price. This is good, compared to the average Illinois ticket price of 258 €.
The cheapest month to fly from Boston to Decatur Airport is usually November. The cheapest month to fly from Boston to Greater Peoria Airport is usually November. The cheapest month to fly from Boston to Moline Airport is usually December. And the cheapest month to fly from Boston to Quincy Airport is usually November.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Boston to Illinois on Wednesday, 3 December 2025.
Boston Logan International Airport offers direct flights to Illinois.
If you're flying from Boston, the cheapest city in Illinois to fly into is Chicago. The cheapest airport serving Chicago at the moment is Chicago O'Hare International.
The average flight time between Boston and Illinois is 2 hours and 55 minutes.