What is the cheapest airline that flies from Ontario to Helena?

United Airlines and Alaska Airlines are the most popular carriers operating from Ontario to Helena

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 37% of people opting to fly with this airline when traveling to Helena. Keep in mind that there are 9 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 July 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.

$198 Cheap Flights from Ontario to Helena in 2025

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Find the cheapest flights from Ontario to Helena

Round-trip

One-way

Last minute

Cheap round-trip flights

6:05 am - 12:20 pmONT-HLN

5h 15m1 stop

5:50 am - 8:55 amHLN-ONT

4h 05m1 stop

$305Delta

Find Deal

sáb, ago 30 - qua, set 3

5:09 pm - 10:47 pmONT-HLN

4h 38m1 stop

5:50 am - 8:47 amHLN-ONT

3h 57m1 stop

$329Delta

Find Deal

sex, ago 1 - ter, ago 5

5:09 pm - 10:47 pmONT-HLN

4h 38m1 stop

1:00 pm - 10:47 pmHLN-ONT

10h 47m2 stops

$334Delta

Find Deal

sex, ago 1 - ter, ago 5

6:05 am - 12:20 pmONT-HLN

5h 15m1 stop

1:00 pm - 10:42 pmHLN-ONT

10h 42m2 stops

$347Delta

Find Deal

sáb, ago 30 - qua, set 3

1:15 pm - 9:11 pmONT-HLN

6h 56m1 stop

2:30 pm - 8:43 pmHLN-ONT

7h 13m1 stop

$395United Airlines

Find Deal

seg, set 8 - sex, set 12

5:05 am - 1:58 pmONT-HLN

7h 53m1 stop

2:34 pm - 8:54 pmHLN-ONT

7h 20m1 stop

$399United Airlines

Find Deal

sáb, ago 2 - seg, ago 4

3:06 pm - 3:21 pmONT-HLN

23h 15m1 stop

4:02 pm - 10:44 amHLN-ONT

19h 42m1 stop

$424Alaska Airlines

Find Deal

sex, set 26 - dom, set 28

1:15 pm - 9:00 pmONT-HLN

6h 45m1 stop

2:00 pm - 8:24 pmHLN-ONT

7h 24m1 stop

$435United Airlines

Find Deal

sex, set 26 - sáb, set 27

5:49 pm - 3:21 pmONT-HLN

20h 32m2 stops

4:02 pm - 9:26 amHLN-ONT

18h 24m2 stops

$458Alaska Airlines

Find Deal

sáb, ago 30 - qua, set 3

7:10 am - 3:21 pmONT-HLN

7h 11m2 stops

4:02 pm - 10:44 amHLN-ONT

19h 42m1 stop

$488Alaska Airlines

Find Deal

sex, set 26 - sáb, set 27

Alaska Airlines flights from Ontario to Helena

Our best Alaska Airlines deals on Ontario to Helena flight tickets

Alaska Airlines

Sep 26

ONT3:06 pmOntario

23h 15m

1 stop

HLN3:21 pmHelena

Sep 28

HLN4:02 pmHelena

19h 42m

1 stop

ONT10:44 amOntario

$424

Find similar

Alaska Airlines

Aug 30

ONT5:49 pmOntario

20h 32m

2 stops

HLN3:21 pmHelena

Sep 3

HLN4:02 pmHelena

18h 24m

2 stops

ONT9:26 amOntario

$458

Find similar

Alaska Airlines

Sep 26

ONT7:10 amOntario

7h 11m

2 stops

HLN3:21 pmHelena

Sep 27

HLN4:02 pmHelena

19h 42m

1 stop

ONT10:44 amOntario

$488

Find similar

Delta flights from Ontario to Helena

Our best Delta deals on Ontario to Helena flight tickets

Delta

Aug 30

ONT6:05 amOntario

5h 15m

1 stop

HLN12:20 pmHelena

Sep 3

HLN5:50 amHelena

4h 05m

1 stop

ONT8:55 amOntario

$305

Find similar

Delta

Aug 1

ONT5:09 pmOntario

4h 38m

1 stop

HLN10:47 pmHelena

Aug 5

HLN5:50 amHelena

3h 57m

1 stop

ONT8:47 amOntario

$329

Find similar

Delta

Aug 1

ONT5:09 pmOntario

4h 38m

1 stop

HLN10:47 pmHelena

Aug 5

HLN1:00 pmHelena

10h 47m

2 stops

ONT10:47 pmOntario

$334

Find similar

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

Best Price Found	$198
Fastest flight time	4h 38m
Direct flights	None
Airports in Helena	1 airport

The best one-way flight to Helena from Ontario in the past 72 hours is $198. The best round-trip flight deal from Ontario to Helena found on momondo in the last 72 hours is $305.

The fastest flight from Ontario to Helena takes 4h 38m

There are no direct flights from Ontario to Helena. Popular non-direct route for this connection is Ontario Airport - Helena Airport.

There is 1 airport near Helena: Helena (HLN)

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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 4h 38m.
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 July 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 8.0 7,951 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.