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BOI to STL: distance & flight time
Boise (Boise Air Terminal/Gowen Field) → St. Louis (St Louis Lambert International Airport)
1,379 mi
2,220 km · 1,199 nm
3h 28m
estimated nonstop flight time
+1h
time difference · heading east
See live BOI→STL fares Phone-only fares on this route — call free
Flight time details
1,379 miles nonstop takes roughly 3h 28m 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
- BOI — Boise Air Terminal/Gowen Field · Boise, 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 BOI
- MUO · Mountain Home Air Force Base40 mi away
- ONO · Ontario Municipal Airport50 mi away
- MYL · McCall Municipal Airport92 mi away
- SUN · Friedman Memorial Airport97 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 BOI from STL?
The flight distance from Boise (BOI) to St. Louis (STL) is 1,379 miles (2,220 km, 1,199 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from BOI to STL?
A nonstop flight takes about 3h 28m 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 Boise and St. Louis?
St. Louis is 1 hour ahead of Boise.
What is the cheapest way to fly from BOI to STL?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on BOI–STL that never appear on search engines, with no booking fees.