Which airports can I use when flying from Ontario to Helena?

Flights from Ontario to Helena usually depart from Ontario (ONT) and arrive at Helena (HLN).

What cabin classes can I book on flights from Ontario to Helena?

Only Economy Class is available on flights from Ontario to Helena.

Which airports do connecting flights from Ontario to Helena pass through?

Connecting flights from Ontario to Helena most commonly pass through: • Denver Intl (DEN) - 50% of one-stop connections • Salt Lake City (SLC) - 50% of one-stop connections Together, these airports account for 100% of one-stop bookings on this route.

Can I save money by using flexible dates for flights from Ontario to Helena?

On the Ontario to Helena route, being flexible with your departure day can save you up to 58%. Saturday is the cheapest day at $328 round-trip on average, while Thursday is the most expensive at $775: a $447 difference. Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

How long is a flight from Ontario to Helena?

There are currently no nonstop flights available from Ontario to Helena. Flights with 1 layover take between 5h 02m and 7h 24m in total, depending on the connection.

Do I need a passport to fly from Ontario to Helena?

No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

Have flight prices from Ontario to Helena changed much recently?

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $329 to $1,613. That means the highest observed fare was about 5x higher than the lowest one.

How are flight prices from Ontario to Helena looking right now?

One-way fares from Ontario to Helena are currently higher than usual. Average one-way flight prices are about $421, which is 31% above the typical average for this route.

How much time can I save by choosing a different layover airport from Ontario to Helena?

Flying via Salt Lake City (SLC) gives the shortest average 1-stop total travel time at 5h 02m, compared with 7h 24m via Denver Intl (DEN).

What is the time difference between Ontario and Helena?

Helena is 1 hour ahead of Ontario (Mountain Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

What car rental options are available at Helena Airport (HLN)?

Helena Airport (HLN) hosts 5 major car rental companies, with daily rates starting from around $25 for economy cars. Top options include: • Budget • Enterprise Rent-A-Car • Hertz • Avis • National

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

Delta ($329) and Alaska Airlines ($329) are the cheapest airlines to fly round-trip from Ontario to Helena according to KAYAK data over the last 5 days.

What is the most popular layover airport when flying from Ontario to Helena?

Denver Intl (DEN) and Salt Lake City (SLC) are the most popular layovers for the Ontario to Helena route. 50% of KAYAK users who booked 1-stop round-trips over the past 3 months connected via DEN or SLC.

What is the cheapest layover airport when flying from Ontario to Helena?

Flights via Salt Lake City (SLC) offer the most affordable fares, with an average round-trip price of $525. Based on KAYAK data over the past 3 months.

When flying from Ontario to Helena which airport offers the shortest layover?

Salt Lake City (SLC) had the shortest average connection time for Ontario to Helena layovers at 199 minutes over the past 3 months.

$266 CHEAP FLIGHTS from Ontario to Helena (ONT - HLN)

Save 21% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Cheapest round-trip

$329

Typical prices: $328-$775

Delta

Tue 10/30Fri 11/2

ONT - HLN • 1 stop

Cheapest one-way

$266

Typical prices: $165-$353

United Airlines

Mon 9/24

ONT - HLN • 1 stop

Top layover airports

Salt Lake City (SLC)

Cheapest • Avg $525 (round-trip)

Denver Intl (DEN)

Shortest trip • 7h 24m (one-way)

Insights

Start a new search

KAYAK searches 100s of sites at once to find you the best travel deals.

We hope you love your trip to Helena!

Flight Deals

Cheap Flights from Ontario to Helena (ONT-HLN)

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Recent round-trip flight deals from Ontario to Helena

Sat, Jan 30 - Wed, Feb 3

7:00 am - 4:23 pmONT Ontario-HLN Helena

8h 23m1 stop Seattle/Tacoma Intl

5:00 pm - 10:41 pmHLN Helena-ONT Ontario

6h 41m1 stop Seattle/Tacoma Intl

$329Alaska Airlines

Fri, Oct 30 - Mon, Nov 2

6:00 am - 12:28 pmONT Ontario-HLN Helena

5h 28m1 stop Salt Lake City

1:08 pm - 4:23 pmHLN Helena-ONT Ontario

4h 15m1 stop Salt Lake City

$329Delta

Fri, Oct 30 - Mon, Nov 2

6:00 am - 12:28 pmONT Ontario-HLN Helena

5h 28m1 stop Salt Lake City

1:08 pm - 10:43 pmHLN Helena-ONT Ontario

10h 35m2 stops Salt Lake City Seattle/Tacoma Intl

$334Delta

Sat, Jan 30 - Wed, Feb 3

7:00 am - 4:23 pmONT Ontario-HLN Helena

8h 23m1 stop Seattle/Tacoma Intl

5:00 pm - 10:41 pmHLN Helena-ONT Ontario

6h 41m1 stop Seattle/Tacoma Intl

$349Alaska Airlines

Wed, Nov 18 - Sat, Dec 5