Allegiant AirDepart20:24
Fri, Nov 13IDA → LAS
1h 45m · Direct
$113one way, per person
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- Cheapest fare
- $113
- Cheapest month
- November
- Direct flights
- Yes
- Flight time
- 1h 45m
Allegiant Air · Fri, Nov 13
from $113
Allegiant Air
860 km
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Cheapest month to fly from Idaho Falls to Las Vegas
Lowest one-way fare per person in each month. Choose a month to see every date.
Cheapest dates in November 2026
The lowest fares we've seen for each day, cheapest first.
Allegiant Air
Alaska AirlinesDepart15:55
Thu, Nov 12IDA → LAS
4h 11m · 1 stop
$201one way, per person
View deal
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About flights from Idaho Falls to Las Vegas
Idaho Falls (IDA) and Las Vegas (LAS) are about 860 km apart. Direct flights take around 1h 45m, and recent direct fares were with Allegiant Air. Over the next few months, one-way fares start from $113, and November 2026 is currently the cheapest month to fly.
These prices come from searches travellers made in the last 48 hours, so they move quickly. If you see a good fare, it's worth booking soon. FlightsExp is free to use: you book directly with our travel partner.
Frequently asked questions
How much is a flight from Idaho Falls to Las Vegas?
The cheapest one-way fare we've seen recently is $113 with Allegiant Air, departing Friday, November 13, 2026.
What is the cheapest month to fly from Idaho Falls to Las Vegas?
November 2026 currently has the lowest fares, from $113 one way.
Are there direct flights from Idaho Falls to Las Vegas?
Yes. Recent direct fares were with Allegiant Air.
How long is the flight from Idaho Falls to Las Vegas?
A direct flight takes about 1h 45m. Idaho Falls and Las Vegas are around 860 km apart.
Which airlines fly from Idaho Falls to Las Vegas?
Recent fares on this route were with Allegiant Air and Alaska Airlines.
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