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Connecting route · United States → United States

Flights from St Louis to Idaho Falls

There are no direct flights from St Louis to Idaho Falls. The fastest way is one stop via Denver or Salt Lake City, about 4h 56m door to door (32 connections a week on current schedules).

No direct flights · 2 connection options From 4h 56m
STLIDADEN

St Louis to Idaho Falls at a glance

Fastest journey4h 56mVia Denver, on current schedules
Nonstop flightsNoneConnect via Denver or Salt Lake City

Best ways to fly from St Louis to Idaho Falls

Ranked by how easy the connection is: one airline or alliance first (bags and connection protected), then the quickest self-transfer options.

1
STL Denver (DEN) IDA
Leg 1: Frontier Airlines, Southwest Airlines, United Airlines · Leg 2: United Airlines
Fri09:15 STL10:24 DEN1h 21m connection11:45 DEN13:11 IDAUnited Airlines
19 connections a week One airline, one ticket Fastest 4h 56m
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2
STL Salt Lake City (SLC) IDA
Leg 1: Delta Air Lines, Southwest Airlines · Leg 2: Delta Air Lines
Mon14:30 STL16:30 SLC4h 45m connection21:15 SLC22:00 IDADelta Air Lines
13 connections a week One airline, one ticket Fastest 8h 30m
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Connections are computed from flights actually flown over the last 8 weeks, with at least 45 minutes to change on one airline and 2 hours on separate tickets. Times are local. The search shows live itineraries and exact times.

Good to know

Distance
1,903 km1,182 miles
Journey time
4h 56mon current schedules
Time difference
-1hIdaho Falls vs St Louis
Currency in Idaho Falls
USD
Airports
STL → IDA

Flights from St Louis to Idaho Falls: questions answered

Are there direct flights from St Louis to Idaho Falls?
No. There is no nonstop service, so you will connect, most easily in Denver and Salt Lake City. Some connections are on one airline or alliance, so your bags and connection are protected on a single ticket.
How long is the flight from St Louis to Idaho Falls?
With one connection the journey usually takes around 4h 56m, depending on the layover. The straight-line distance is 1,903 km.
Where do you change planes between St Louis and Idaho Falls?
The best connecting points are Denver (DEN) and Salt Lake City (SLC). Frontier Airlines flies both legs via Denver, so you can book it as one ticket.
Which airports serve St Louis and Idaho Falls?
St Louis: St. Louis Lambert International Airport (STL). Idaho Falls: Idaho Falls Regional Airport (IDA).
What is the time difference between St Louis and Idaho Falls?
Idaho Falls is 1 hour behind St Louis.

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