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FNL to STL: distance & flight time
Fort Collins (Northern Colorado Regional Airport) → St. Louis (St Louis Lambert International Airport)
787 mi
1,267 km · 684 nm
2h 11m
estimated nonstop flight time
+1h
time difference · heading east
See live FNL→STL fares Phone-only fares on this route — call free
Flight time details
787 miles nonstop takes roughly 2h 11m 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
- FNL — Northern Colorado Regional Airport · Fort Collins, 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 FNL
- DEN · Denver International Airport45 mi away
- GXY · Greeley–Weld County Airport20 mi away
- WBU · Boulder Municipal Airport31 mi away
- BJC · Rocky Mountain Metropolitan 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 FNL from STL?
The flight distance from Fort Collins (FNL) to St. Louis (STL) is 787 miles (1,267 km, 684 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from FNL to STL?
A nonstop flight takes about 2h 11m 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 Fort Collins and St. Louis?
St. Louis is 1 hour ahead of Fort Collins.
What is the cheapest way to fly from FNL to STL?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on FNL–STL that never appear on search engines, with no booking fees.