Deal found on August 13, 2026
San Diego to Denver
$88$23663% off
Round trip
Nonstop to Denver from San Diego is $88 round trip, about 66% off the typical fare on Frontier. That's an easy excuse for a fall mountain getaway or a quick Rockies weekend, with a flight time under three hours each way at a price that rarely dips this low.
Travel dates
Dates in September
e.g. Sep 3 – Sep 12 · 9 nights
Date options
7 at this price
Lowest we've seen
$38
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