Cheap flights from Missoula to Boise

One-way fares from $371 · MSO → BOI · prices found by travellers in the last 48 hours

Compare all dates Boise → Missoula
Cheapest fare
$371

Allegiant Air · Thu, Nov 12

Cheapest month
November

from $371

Direct flights
Not recently

Usually 1+ stop

Quickest trip
5h 42m

400 km

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Cheapest month to fly from Missoula to Boise

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

  1. November 2026 Cheapest $371

Cheapest dates in November 2026

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

Allegiant Air
Depart17:15 Thu, Nov 12MSO → BOI 5h 42m · 2 stops
$371one way, per person
View deal
See every date in November 2026 →

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Getting around

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About flights from Missoula to Boise

Missoula (MSO) and Boise (BOI) are about 400 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 5h 42m. Over the next few months, one-way fares start from $371, 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 Missoula to Boise?

The cheapest one-way fare we've seen recently is $371 with Allegiant Air, departing Thursday, November 12, 2026.

What is the cheapest month to fly from Missoula to Boise?

November 2026 currently has the lowest fares, from $371 one way.

Are there direct flights from Missoula to Boise?

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

How long is the flight from Missoula to Boise?

The quickest journey we've seen takes about 5h 42m. Missoula and Boise are around 400 km apart.

Which airlines fly from Missoula to Boise?

Recent fares on this route were with Allegiant Air.

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