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MSO to STL: distance & flight time
Missoula (Missoula International Airport) → St. Louis (St Louis Lambert International Airport)
1,321 mi
2,126 km · 1,148 nm
3h 20m
estimated nonstop flight time
+1h
time difference · heading east
See live MSO→STL fares Phone-only fares on this route — call free
Flight time details
1,321 miles nonstop takes roughly 3h 20m 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
- MSO — Missoula International Airport · Missoula, 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 MSO
- FCA · Glacier Park International Airport97 mi away
- BTM · Bert Mooney Airport101 mi away
- HLN · Helena Regional Airport102 mi away
- SMN · Lemhi County Airport124 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 MSO from STL?
The flight distance from Missoula (MSO) to St. Louis (STL) is 1,321 miles (2,126 km, 1,148 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from MSO to STL?
A nonstop flight takes about 3h 20m 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 Missoula and St. Louis?
St. Louis is 1 hour ahead of Missoula.
What is the cheapest way to fly from MSO to STL?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on MSO–STL that never appear on search engines, with no booking fees.