What airlines fly to Helena?

United Airlines, Delta and Alaska Airlines are the top three most popular airlines that fly to Helena from Ontario according to our data. United Airlines is the first choice among our users, with 46% of people opting to fly with this airline when traveling to Helena. Keep in mind that there are 7 different airlines that fly to Helena on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Ontario Airport to Helena Airport?

Prices for flights from Ontario Airport to Helena Airport were last updated today.

How many operators does momondo search for flights from Ontario Airport to Helena Airport?

As of November 2025, there is 1 operator available to choose from for flights from Ontario Airport to Helena Airport.

How old do you have to be to fly from Ontario Airport to Helena Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Helena Airport.

What documentation or ID do you need to fly to Helena Airport?

The necessary travel and health documents for your Helena Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$284 Cheap Flights from Ontario to Helena in 2025/26

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Find the cheapest flights from Ontario to Helena

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

11:53 am - 6:11 pmONT-HLN

5h 18m1 stop

6:48 pm - 10:59 amHLN-ONT

17h 11m1 stop

$284Alaska Airlines

Find Deal

Sat, Jan 17 - Wed, Jan 21

6:00 am - 12:27 pmONT-HLN

5h 27m1 stop

1:10 pm - 1:56 pmHLN-ONT

25h 46m2 stops

$292Delta

Find Deal

Sat, Jan 17 - Wed, Jan 21

6:00 am - 12:27 pmONT-HLN

5h 27m1 stop

1:10 pm - 10:51 pmHLN-ONT

10h 41m2 stops

$294Delta

Find Deal

Sat, Jan 17 - Wed, Jan 21

3:30 pm - 12:27 pmONT-HLN

19h 57m2 stops

1:10 pm - 10:51 pmHLN-ONT

10h 41m2 stops

$307Delta

Find Deal

Sat, Jan 17 - Wed, Jan 21

7:30 am - 12:27 pmONT-HLN

27h 57m2 stops

1:10 pm - 10:51 pmHLN-ONT

10h 41m2 stops

$338Delta

Find Deal

Sat, Jan 17 - Wed, Jan 21

1:24 pm - 9:26 pmONT-HLN

7h 02m1 stop

2:25 pm - 8:50 pmHLN-ONT

7h 25m1 stop

$379United Airlines

Find Deal

Sat, Feb 7 - Thu, Feb 12

5:05 am - 1:45 pmONT-HLN

7h 40m1 stop

2:26 pm - 12:38 pmHLN-ONT

23h 12m1 stop

$697United Airlines

Find Deal

Fri, Dec 26 - Fri, Jan 2

Delta flights from Ontario to Helena

Our best Delta deals on Ontario to Helena flight tickets

Delta

Jan 17

ONT6:00 amOntario

5h 27m

1 stop

HLN12:27 pmHelena

Jan 21

HLN1:10 pmHelena

25h 46m

2 stops

ONT1:56 pmOntario

$292

Find similar

Delta

Jan 17

ONT6:00 amOntario

5h 27m

1 stop

HLN12:27 pmHelena

Jan 21

HLN1:10 pmHelena

10h 41m

2 stops

ONT10:51 pmOntario

$294

Find similar

Delta

Jan 17

ONT3:30 pmOntario

19h 57m

2 stops

HLN12:27 pmHelena

Jan 21

HLN1:10 pmHelena

10h 41m

2 stops

ONT10:51 pmOntario

$307

Find similar

United Airlines flights from Ontario to Helena

Our best United Airlines deals on Ontario to Helena flight tickets

United Airlines

Feb 7

ONT1:24 pmOntario

7h 02m

1 stop

HLN9:26 pmHelena

Feb 12

HLN2:25 pmHelena

7h 25m

1 stop

ONT8:50 pmOntario

$379

Find similar

United Airlines

Nov 30

ONT5:05 amOntario

7h 22m

1 stop

HLN1:27 pmHelena

Dec 9

HLN6:30 amHelena

7h 02m

1 stop

ONT12:32 pmOntario

$607

Find similar

United Airlines

Dec 4

ONT1:34 pmOntario

6h 48m

1 stop

HLN9:22 pmHelena

Dec 7

HLN6:30 amHelena

7h 02m

1 stop

ONT12:32 pmOntario

$617

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OntarioHelena

ONT - HLN

ONTHLN

Ontario

Sat 1/17

11:53 am-6:11 pm

1 stop5h 18m

Helena

Wed 1/21

6:48 pm-10:59 am

1 stop17h 11m

$284

OntarioHelena

ONT - HLN

ONTHLN

Ontario

Sat 1/17

6:00 am-12:27 pm

1 stop5h 27m

Helena

Wed 1/21

1:10 pm-1:56 pm

2 stops25h 46m

$292

OntarioHelena

ONT - HLN

ONTHLN

Ontario

Sat 1/17

6:00 am-12:27 pm

1 stop5h 27m

Helena

Wed 1/21

1:10 pm-10:51 pm

2 stops10h 41m

$294

OntarioHelena

ONT - HLN

ONTHLN

Ontario

Sat 1/17

3:30 pm-12:27 pm

2 stops19h 57m

Helena

Wed 1/21

1:10 pm-10:51 pm

2 stops10h 41m

$307

OntarioHelena

ONT - HLN

ONTHLN

Ontario

Sat 1/17

7:30 am-12:27 pm

2 stops27h 57m

Helena

Wed 1/21

1:10 pm-10:51 pm

2 stops10h 41m

$338

OntarioHelena

ONT - HLN

ONTHLN

Ontario

Sat 2/7

1:24 pm-9:26 pm

1 stop7h 02m

Helena

Thu 2/12

2:25 pm-8:50 pm

1 stop7h 25m

$379

OntarioHelena

ONT - HLN

ONTHLN

Ontario

Fri 12/26

5:05 am-1:45 pm

1 stop7h 40m

Helena

Fri 1/2

2:26 pm-12:38 pm

1 stop23h 12m

$697

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from Ontario to Helena

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest day to depart on your flight to Helena?

The cheapest day to depart from Ontario to Helena is on a Friday. Travelers who choose to depart for Helena on a Friday will often find tickets for as low as $431. The most expensive day to fly to Helena is Wednesday, with ticket prices averaging around $497.

What is the cheapest time of day to depart on your flight to Helena?

According to our data, the cheapest time of day to fly to Helena is in the afternoon. momondo users have found flights departing from Ontario to Helena in the afternoon for as low as $393. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Helena is at noon when prices are around $611.

When to book flights from Ontario to Helena

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Helena according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Ontario to Helena (ONT to HLN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Helena

Fastest flight time	4h 41m
Direct flights	None

The fastest flight from Ontario to Helena takes 4h 41m

There are no direct flights from Ontario to Helena. There are no popular flight routes from Ontario to Helena.

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How far is Ontario to Helena by plane?
The straight-line distance from Ontario to Helena is 913.6 mi. In terms of flight time, this usually takes a little over 5h 18m.
When did momondo last update prices for flights from Ontario Airport to Helena Airport?
Prices for flights from Ontario Airport to Helena Airport were last updated today.
How many operators does momondo search for flights from Ontario Airport to Helena Airport?
As of November 2025, there is 1 operator available to choose from for flights from Ontario Airport to Helena Airport.
How old do you have to be to fly from Ontario Airport to Helena Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Helena Airport.
What documentation or ID do you need to fly to Helena Airport?
The necessary travel and health documents for your Helena Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Ontario to Helena?
momondo data reveals that the most frequently booked airline on the route from Ontario to Helena is Delta, representing 100% of all bookings.

Best airlines flying from Ontario to Helena

Compare and see reviews for airlines that fly from Ontario to Helena with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $205	Free Cancellation	Rating 7.9 7,998 reviews		Search Delta flights

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Helena?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Ontario to Helena. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Ontario to Helena with flexible booking policies on momondo?

Flights from Ontario to Helena with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Ontario to Helena?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Helena from Ontario.

I’m not ready to book a flight from Ontario to Helena right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Ontario to Helena flights. All you need is a valid email address and we will do the rest; it is that quick and easy.