Cheap flights from Boise to Idaho Falls

One-way fares from $385 · BOI → IDA · prices found by travellers in the last 48 hours

Compare all dates Idaho Falls → Boise
Cheapest fare
$385

Alaska Airlines · Sat, Nov 14

Cheapest month
November

from $385

Direct flights
Not recently

Usually 1+ stop

Quickest trip
3h 12m

340 km

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Cheapest month to fly from Boise to Idaho Falls

Lowest one-way fare per person in each month. Choose a month to see every date.

  1. November 2026 Cheapest $385

Cheapest dates in November 2026

The lowest fares we've seen for each day, cheapest first.

Alaska Airlines
Depart08:20 Sat, Nov 14BOI → IDA 3h 33m · 1 stop
$385one way, per person
View deal
See every date in November 2026 →

Plan the rest of your trip to Idaho Falls

Where to stay, what to do and getting around, from our travel partners.

Where to stay

Hotels in Idaho FallsCompare places to stay on Booking.com Find hotels →

Things to do

Things to do in Idaho FallsTours, attractions and day trips on Klook Explore →

Getting around

Airport transfer in Idaho FallsPre-book a driver to meet you at arrivals, with Kiwitaxi Book a transfer → Car hire in Idaho FallsCompare rental cars from major brands on EconomyBookings Compare cars →

About flights from Boise to Idaho Falls

Boise (BOI) and Idaho Falls (IDA) are about 340 km apart. We haven't seen direct fares on this route recently, so expect at least one stop; the quickest journey we've seen takes about 3h 12m. Over the next few months, one-way fares start from $385, 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 Boise to Idaho Falls?

The cheapest one-way fare we've seen recently is $385 with Alaska Airlines, departing Saturday, November 14, 2026.

What is the cheapest month to fly from Boise to Idaho Falls?

November 2026 currently has the lowest fares, from $385 one way.

Are there direct flights from Boise to Idaho Falls?

We haven't seen direct fares recently, so most journeys include at least one stop.

How long is the flight from Boise to Idaho Falls?

The quickest journey we've seen takes about 3h 12m. Boise and Idaho Falls are around 340 km apart.

Which airlines fly from Boise to Idaho Falls?

Recent fares on this route were with Alaska Airlines.

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