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APA to STL: distance & flight time
Denver (Centennial Airport) → St. Louis (St Louis Lambert International Airport)
777 mi
1,250 km · 675 nm
2h 9m
estimated nonstop flight time
+1h
time difference · heading east
See live APA→STL fares Phone-only fares on this route — call free
Flight time details
777 miles nonstop takes roughly 2h 9m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time gain when reading arrival times on your ticket.
The two airports
- APA — Centennial Airport · Denver, United States
- STL — St Louis Lambert International Airport · St. Louis, 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 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
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
Frequently asked questions
How far is APA from STL?
The flight distance from Denver (APA) to St. Louis (STL) is 777 miles (1,250 km, 675 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from APA to STL?
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 Denver and St. Louis?
St. Louis is 1 hour ahead of Denver.
What is the cheapest way to fly from APA to STL?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on APA–STL that never appear on search engines, with no booking fees.