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STL to APA: distance & flight time
St. Louis (St Louis Lambert International Airport) → Denver (Centennial Airport)
777 mi
1,250 km · 675 nm
2h 9m
estimated nonstop flight time
-1h
time difference · heading west
See live STL→APA fares Phone-only fares on this route — call free
Flight time details
777 miles nonstop takes roughly 2h 9m gate to gate, flying west. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time set-back when reading arrival times on your ticket.
The two airports
- STL — St Louis Lambert International Airport · St. Louis, United States
- APA — Centennial Airport · Denver, United States
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near STL
- SUS · Spirit of St Louis Airport16 mi away
- ALN · St Louis Regional Airport20 mi away
- BLV · Scott AFB/Midamerica Airport32 mi away
- SPI · Abraham Lincoln Capital Airport84 mi away
Near APA
- DEN · Denver International Airport22 mi away
- BFK · Buckley Air Force Base10 mi away
- BJC · Rocky Mountain Metropolitan Airport27 mi away
- WBU · Boulder Municipal Airport38 mi away
Frequently asked questions
How far is STL from APA?
The flight distance from St. Louis (STL) to Denver (APA) is 777 miles (1,250 km, 675 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from STL to APA?
A nonstop flight takes about 2h 9m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
What is the time difference between St. Louis and Denver?
Denver is 1 hour behind St. Louis.
What is the cheapest way to fly from STL to APA?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on STL–APA that never appear on search engines, with no booking fees.