Cheap Flights from Denver to Chicago
Compare cheap flights from Denver (DEN) to Chicago (ORD) on Tripile, with fares from around $89. The route takes about 2h 35m, and September is often the best month for low prices.
Airlines on This Route
Popular airlines flying Denver to Chicago include United, Southwest, Frontier, Spirit. Compare their schedules, baggage rules, and prices side by side, then book the option that fits your trip.
With 4 carriers commonly serving DEN to ORD, departure times are spread across the day, so it is worth checking early-morning and late-evening flights when you want the lowest fare on a 2h 35m sector.
When to Book DEN to ORD
Fares on this route start from around $89, and September typically brings the lowest prices. Search with flexible dates to compare a whole month at once, check the return leg from Chicago to Denver in the same search, and review the fare rules before paying so you know what a change or cancellation would cost.