Cheap flights from Chicago to Denver
Cheapest return fare right now: $89Oct 28 – Nov 1 · Frontier Airlines
- Direct flights
- Yes
- Typical flight time
- 2 h 49 min
- Price range seen
- $89 – $269
- Cheapest month (next 3 months)
- October 2026
Best dates
| Dates | Nights | Airline | Stops | From | Price | |
|---|---|---|---|---|---|---|
| Oct 28 – Nov 1 | 4 | Frontier Airlines | Direct | Chicago O'Hare | $89 | Book → |
| Oct 18 – Oct 22 | 4 | Frontier Airlines | Direct | Chicago O'Hare | $151 | Book → |
| Dec 31 – Jan 3 | 3 | Frontier Airlines | Direct | Chicago O'Hare | $269 | Book → |
Prices checked on October 12, 2026.
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