Deal found on September 9, 2026
San Francisco Bay Area to Denver
$61$26377% off
Round trip
Denver fares from San Francisco are sitting at $61 nonstop on Frontier, just a few dollars off the cheapest we've ever tracked on this route and well under the usual $298. Seats are showing open through the rest of 2026, and Denver makes an easy, cheap jumping-off point for the Rockies as ski season ramps up.
Travel dates
Dates in October
e.g. Oct 10 – Oct 19 · 9 nights
Date options
6 at this price
Lowest we've seen
$58
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