FFL Helper / St Louis / Denver

STL → DEN

St Louis (STL) to Denver (DEN)

Compare one-way fares for flights from St Louis to Denver.

Lowest fare $89

Distance 795 mi

Flight time 2h 30m

Airports STL–DEN

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By month: November 2026 from $89

Price calendar

October 2026

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November 2026

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Upcoming dates

Denver DEN

$89

Nov 11, 4:18pm · 2h 30m · 0 stops

STL → DEN · Frontier Airlines

Tickets

About this route

This calendar shows dated one-way fares from St Louis to Denver. Use it to see which days are cheaper before you search tickets.

Flight time and airport codes on this page are for the sample itinerary we have on file. Always confirm the live routing when you book St Louis to Denver.