Cheap flights from Ontario to Helena

One-way fares from $300 · ONT → HLN · prices found by travellers in the last 48 hours

Compare all dates Helena → Ontario
Cheapest fare
$300

United Airlines · Sat, Nov 14

Cheapest month
November

from $300

Direct flights
Not recently

Usually 1+ stop

Quickest trip
4h 27m

1,480 km

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Cheapest month to fly from Ontario to Helena

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

  1. November 2026 Cheapest $300

Cheapest dates in November 2026

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

United Airlines
Depart13:29 Sat, Nov 14ONT → HLN 4h 27m · 1 stop
$300one way, per person
View deal
See every date in November 2026 →

Plan the rest of your trip to Helena

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

Where to stay

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Things to do

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

Getting around

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

About flights from Ontario to Helena

Ontario (ONT) and Helena (HLN) are about 1,480 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 4h 27m. Over the next few months, one-way fares start from $300, 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 Ontario to Helena?

The cheapest one-way fare we've seen recently is $300 with United Airlines, departing Saturday, November 14, 2026.

What is the cheapest month to fly from Ontario to Helena?

November 2026 currently has the lowest fares, from $300 one way.

Are there direct flights from Ontario to Helena?

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

How long is the flight from Ontario to Helena?

The quickest journey we've seen takes about 4h 27m. Ontario and Helena are around 1,480 km apart.

Which airlines fly from Ontario to Helena?

Recent fares on this route were with United Airlines.

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