Is there a direct flight from St Louis to Denver?

Yes, Frontier Airlines, Southwest Airlines and 1 more airline operate nonstop flights from St Louis (STL) to Denver (DEN).

Which airlines fly direct from St Louis to Denver?

Frontier Airlines, Southwest Airlines, United Airlines operate nonstop flights from St Louis to Denver.

The nonstop flight from St Louis to Denver takes ~1h 33m (approximately 1236 km).

We'll check every combination in your window daily and email you the cheapest match. No account needed.

✈ ~1h 33m 1,236 km STL on-time 78.6% DEN on-time 80.1%

Find Deals (Pro) scans nonstop fares from STL to up to 8 destinations under one price cap — and emails you when a fare drops below it.

Frontier Airlines F9

Southwest Airlines WN

United Airlines UA