Las Vegas (LAS) to Idaho Falls (IDA) flights
One airline flies nonstop from Las Vegas (LAS) to Idaho Falls (IDA): Allegiant Air. The two airports are 539 miles (867 km) apart. There are also 7 ways to fly it with one stop, through Salt Lake City, Phoenix and Santa Ana and more.
Airlines flying nonstop from LAS to IDA
- Allegiant AirNot in an alliance
LAS to IDA with one stop
7 connections, most direct first. 2-stop routings and flight times are in Routes with Pro.
- Via Salt Lake City (SLC)Delta Air Lines the whole way
- Via Phoenix (PHX)American Airlines the whole way
- Via Santa Ana (SNA)Delta Air Lines, Southwest Airlines and 3 more, then Allegiant Air+2
- Via Mesa (AZA)Allegiant Air the whole way
- Via Denver (DEN)United Airlines the whole way
- Via Portland (PDX)Alaska Airlines the whole way
- Via Seattle (SEA)Alaska Airlines the whole way+2
LAS to IDA: common questions
Which airlines fly nonstop from LAS to IDA?
Allegiant Air flies nonstop from Las Vegas (LAS) to Idaho Falls (IDA).
How far is Las Vegas from Idaho Falls by plane?
Las Vegas (LAS) and Idaho Falls (IDA) are 539 miles (867 km) apart along the great circle, the shortest path a flight can take. Connections add distance on top.
How many miles does LAS to IDA cost?
It depends on the program: each prices the route from its own chart or dynamically. The Award Flight Pricer compares 30+ programs for LAS to IDA with taxes and fees.
Where can I connect between Las Vegas and Idaho Falls?
The most direct connections are through Salt Lake City (SLC), Phoenix (PHX), Santa Ana (SNA), Mesa (AZA) and Denver (DEN). On 6 of them the same airline flies both flights, for example Delta Air Lines through Salt Lake City.
More routes
Routes are scheduled nonstop flights. The route data is refreshed monthly; this list was last checked November 11, 2026. Seasonal routes and new launches can be missing or end early, so confirm with the airline before you book. Distances are great-circle, the shortest path between the two airports.