Direct (nonstop) flights from Idaho Falls to Las Vegas
1 airline flys nonstop from Idaho Falls Rgnl (IDA) to Harry Reid International Airport (LAS). It's 538 miles (866 km), about 1h 44m in the air. Operated by Allegiant Air.
Allegiant Air
Route data last updated: May 27, 2026
Airlines with non-stop flights
Alternative Routes
Other ways to fly from Idaho Falls to Las Vegas with one stop · direct emits 100 kg CO₂ per passenger
Looking for the return flight?
LAS → IDA: Flights from Las Vegas to Idaho FallsOther direct flights from Idaho Falls
Direct flights from Las Vegas (LAS)
Frequently Asked Questions
How long is the direct flight from Idaho Falls to Las Vegas?
A nonstop flight from Idaho Falls (IDA) to Las Vegas (LAS) takes approximately 1 hours and 44 minutes. The distance is 538 miles (866 km).
Which airlines fly nonstop from Idaho Falls to Las Vegas?
Just Allegiant Air.
Is there a nonstop flight from Idaho Falls to Las Vegas?
Yes. 1 airline: Allegiant Air.
How far is Idaho Falls from Las Vegas?
The flight distance from Idaho Falls to Las Vegas is 538 miles (866 km), measured as the great-circle (shortest air) distance.
What type of aircraft flies from Idaho Falls to Las Vegas?
At 1h 44m, this route typically uses narrow-body aircraft — Boeing 737 or Airbus A320. Varies by airline.
What is the carbon footprint of a flight from Idaho Falls to Las Vegas?
Roughly 100 kg CO2 per passenger one-way. That's about the same as driving 500 km.
Is the return flight from Las Vegas to Idaho Falls also nonstop?
Yes — nonstop flights run both ways. Flight time may differ slightly due to wind patterns.
When is the cheapest time to fly from Idaho Falls to Las Vegas?
Midweek flights (Tue/Wed) outside holiday peaks are usually cheapest. 3-6 weeks ahead is a good window for this route. Use "Check Prices" above to compare.
How early should I arrive at Idaho Falls Rgnl for this flight?
1.5-2 hours for domestic. Add more time during holidays or busy travel weekends.