Cheap flights from Helena to Idaho Falls

One-way fares from $305 · HLN → IDA · prices found by travellers in the last 48 hours

Compare all dates Idaho Falls → Helena
Cheapest fare
$305

Alaska Airlines · Thu, Nov 12

Cheapest month
November

from $305

Direct flights
Not recently

Usually 1+ stop

Quickest trip
3h 41m

350 km

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Cheapest month to fly from Helena to Idaho Falls

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

  1. November 2026 Cheapest $305

Cheapest dates in November 2026

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

Alaska Airlines
Depart16:41 Thu, Nov 12HLN → IDA 3h 41m · 1 stop
$305one way, per person
View deal
Alaska Airlines
Depart16:41 Sat, Nov 14HLN → IDA 3h 41m · 1 stop
$306one 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 Helena to Idaho Falls

Helena (HLN) and Idaho Falls (IDA) are about 350 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 41m. Over the next few months, one-way fares start from $305, 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 Helena to Idaho Falls?

The cheapest one-way fare we've seen recently is $305 with Alaska Airlines, departing Thursday, November 12, 2026.

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

November 2026 currently has the lowest fares, from $305 one way.

Are there direct flights from Helena to Idaho Falls?

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

How long is the flight from Helena to Idaho Falls?

The quickest journey we've seen takes about 3h 41m. Helena and Idaho Falls are around 350 km apart.

Which airlines fly from Helena to Idaho Falls?

Recent fares on this route were with Alaska Airlines.

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