Denver and the Rockies: cheap flights and the best time to go
Mountain towns, hiking and ski slopes. Colorado · National parks & outdoors, Cities
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Cheapest round trip
Safety level
U.S. U.S. destination: no State Department travel advisory
The State Department's travel advisories
Levels: 1 Exercise normal precautions · 2 Exercise increased caution · 3 Reconsider travel · 4 Do not travel. Read the advisory before you book; it can change. Checked 2026-10-07.
Best time to go
For the weather: April, May, September (highs of 62–82°F, not too much rain). With fares from your airport, the best months weigh weather 60% and price 40%.
| Month | High | Low | Rain | Cheapest round trip from JFK |
|---|---|---|---|---|
| January | 49°F | 20°F | 0.4 in | … |
| February | 49°F | 20°F | 0.5 in | … |
| March | 58°F | 29°F | 1.1 in | … |
| April (a best month) | 65°F | 35°F | 1.9 in | … |
| May (a best month) | 73°F | 45°F | 2.6 in | … |
| June | 86°F | 55°F | 1.5 in | … |
| July | 92°F | 62°F | 2.0 in | … |
| August | 90°F | 59°F | 1.9 in | … |
| September (a best month) | 82°F | 50°F | 1.2 in | … |
| October | 68°F | 37°F | 1.1 in | … |
| November | 57°F | 27°F | 0.6 in | … |
| December | 47°F | 19°F | 0.4 in | … |
Typical daily high and low and total rain, 1991–2020: NOAA NCEI GHCN-Daily, station DENVER WATER DEPT (2 km away). ★ = the best three months. Fares are the cheapest found for trips leaving that month in the next year.
Prices are per seat for a round trip in economy; with more than one traveler they're the total for your party (babies under 2 on a lap need no seat). The booking site shows the final price for everyone.