Cheap flights from Chicago to Denver
The cheapest round trip from Chicago to Denver that travelers found recently is $187 with a carry-on: a $77 fare on Frontier plus about $110 for a carry-on both ways. It leaves Wed, Oct 28 and comes back Sat, Oct 31.
Live prices for Wed, Oct 28 to Sat, Oct 31
Cheapest trips travelers found recently
| Leave | Return | Airline | Airports | Stops | Fare | Carry-on (est.) | Total | Live prices |
|---|---|---|---|---|---|---|---|---|
| Wed, Oct 28 | Sat, Oct 31 | Frontier | ORD → DEN | Nonstop | $77 | +$110 | $187 | Live price |
| Mon, Nov 9 | Mon, Nov 16 | Frontier | ORD → DEN | Nonstop | $114 | +$110 | $224 | Live price |
| Sun, Oct 18 | Wed, Oct 21 | Frontier | ORD → DEN | Nonstop | $151 | +$110 | $261 | Live price |
| Sun, Jan 24 | Fri, Jan 29 | Frontier | ORD → DEN | Nonstop | $172 | +$110 | $282 | Live price |
| Wed, Dec 30 | Sat, Jan 2 | Frontier | ORD → DEN | Nonstop | $269 | +$110 | $379 | Live price |
Round-trip prices per person, from real fares travelers found in the last few days. Carry-on fees are our estimate for each airline, both ways. Prices change fast: check the live price before you book.
Cheapest month to fly
| Month | Cheapest trip | From | Live prices |
|---|---|---|---|
| October 2026 | Wed, Oct 28 to Sat, Oct 31, 3 nights | $187 | Live price |
| November 2026 | Mon, Nov 9 to Mon, Nov 16, 7 nights | $224 | Live price |
| December 2026 | Wed, Dec 30 to Sat, Jan 2, 3 nights | $379 | Live price |
| January 2027 | Sun, Jan 24 to Fri, Jan 29, 5 nights | $282 | Live price |
Bag fees on this route
What the airlines flying Chicago to Denver usually charge for one bag each way. Budget airlines often sell the cheapest fares and charge the most for bags, so compare the total, not the fare.
| Airline | Carry-on, each way | Checked bag, each way |
|---|---|---|
| Frontier | $55 | $50 |
Our estimates: fees depend on the fare type and when you pay. Check the airline's own price when you book.
How these prices work
These are real round-trip fares that travelers found on Aviasales recently, not a live search, so they can change or sell out. Dipt adds an estimate of each airline's carry-on fee, so a cheap fare with expensive bags doesn't look cheaper than it is. "Live price" opens Dipt's live flight search for those dates, where you book with the airline or travel site you pick. Dipt may earn a commission when you book, at no extra cost to you (how Dipt makes money).
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