Cheap Flights from St. Louis to Idaho Falls
Cheap Flights from St. Louis to Idaho Falls
Looking for cheap flights from St. Louis to Idaho Falls? PointsYeah scans award availability across major airline and bank transfer programs in one place, so travelers can compare the lowest points and cash routes faster. Instead of searching each airline separately, users can see pricing from programs like Chase, Amex, Capital One, Citi, and Bilt side by side.
Award prices from St. Louis to Idaho Falls vary by season, cabin, and date, but available award flights can start around 13,000–36,500 points one way, with premium cabins available at higher mileage levels. The live search above allows filtering by cabin, airline, stops, or maximum points to find the best award flights from St. Louis to Idaho Falls for specific travel dates.
2026-11-26
STL - IDA
Economy | 1 Stop
From 13,000 Pts + $5.6
2026-11-26
STL - IDA
Economy | 1 Stop
From 13,000 Pts + $5.6
2026-11-26
STL - IDA
Economy | 1 Stop
From 13,000 Pts + $5.6
2026-11-26
STL - IDA
First | 1 Stop
From 36,500 Pts + $5.6
2026-11-26
STL - IDA
First | 1 Stop
From 36,500 Pts + $5.6
2026-11-26
STL - IDA
First | 1 Stop
From 36,500 Pts + $5.6
St. Louis to Idaho Falls flight facts
Distance
1,173 mi
1,887 km in a straight line
Estimated flight time
about 2h 45m
In the air, for the straight-line distance
Time difference
−1h
Idaho Falls is 1 hour behind St. Louis.
Airports in St. Louis
STL · St Louis Lambert Intl
Airports in Idaho Falls
IDA · Idaho Falls Regional
Nearby airport alternatives
Flights St. Louis - Jacksn Hole · Jacksn Hole is 67 mi from Idaho Falls
Flights St. Louis - Bozeman · Bozeman is 163 mi from Idaho Falls
Premium cabin flights from St. Louis to Idaho Falls
Premium cabin
2026-11-26
STL - IDA
First | 1 Stop
From 36,500 Pts + $5.6
Premium cabin
2026-11-26
STL - IDA
First | 1 Stop
From 36,500 Pts + $5.6
Premium cabin
2026-11-26
STL - IDA
First | 1 Stop
From 36,500 Pts + $5.6
Selected hotels for your next stay
No hotels available at the moment. Check back soon!
Frequently Asked Questions
The cheapest route from St. Louis to Idaho Falls depends on award space, transfer bonuses, and travel dates. PointsYeah compares bank and airline programs in one place so you can find the best points and cash combinations faster.
Yes. Transferable points from Chase, Amex, Capital One, Citi, and Bilt can often be moved to airline partners for flights from St. Louis to Idaho Falls.
Yes. Searching metro codes when available helps compare nearby airport combinations for flights from St. Louis to Idaho Falls.
St. Louis and Idaho Falls are about 1,173 miles (1,887 km) apart in a straight line.
Flying the 1,173-mile straight-line distance takes about 2h 45m in the air, estimated from typical cruising speed. Actual travel time depends on the routing; itineraries with connections take longer.
Idaho Falls is 1 hour behind St. Louis.
Departures from St. Louis: St Louis Lambert Intl (STL). Arrivals in Idaho Falls: Idaho Falls Regional (IDA).
Travelers searching this route also look at other popular routes into Idaho Falls, plus the return trip when we track it. Fares and award space change daily.
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Our mission is to provide the simplest and best
points travel planning experience. Yeah!
