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 January 2026, 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.

$255 Cheap Flights from Ontario to Helena in 2026

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Find the cheapest flights from Ontario to Helena

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

11:53 am - 6:11 pm

ONT

HLN

5h 18m1 stop

6:48 pm - 10:59 am

HLN

ONT

17h 11m1 stop

$255Alaska Airlines

qua, jan 28 - sáb, jan 31

6:00 am - 12:27 pm

ONT

HLN

5h 27m1 stop

1:10 pm - 10:51 pm

HLN

ONT

10h 41m2 stops

$280Delta

qua, jan 28 - sáb, jan 31

7:59 pm - 5:45 pm

ONT

HLN

20h 46m1 stop

6:22 pm - 9:45 am

HLN

ONT

16h 23m1 stop

$303Alaska Airlines

sex, abr 24 - seg, abr 27

5:05 am - 1:41 pm

ONT

HLN

7h 36m1 stop

2:25 pm - 8:50 pm

HLN

ONT

7h 25m1 stop

$315United Airlines

qui, fev 5 - qui, fev 12

10:39 am - 5:45 pm

ONT

HLN

6h 06m1 stop

6:22 pm - 11:59 pm

HLN

ONT

6h 37m1 stop

$335Alaska Airlines

sex, abr 24 - seg, abr 27

10:39 am - 5:45 pm

ONT

HLN

6h 06m1 stop

6:22 pm - 2:19 pm

HLN

ONT

20h 57m2 stops

$344Alaska Airlines

sex, mai 1 - seg, mai 4

6:00 am - 5:45 pm

ONT

HLN

10h 45m1 stop

6:22 pm - 9:39 am

HLN

ONT

16h 17m1 stop

$364Alaska Airlines

sex, abr 3 - seg, abr 6

4:03 pm - 6:11 pm

ONT

HLN

25h 08m1 stop

4:36 pm - 11:52 pm

HLN

ONT

32h 16m2 stops

$382Alaska Airlines

qui, fev 5 - qui, fev 12

7:00 am - 5:45 pm

ONT

HLN

9h 45m2 stops

6:22 pm - 11:59 pm

HLN

ONT

6h 37m1 stop

$398Alaska Airlines

sex, abr 10 - seg, abr 13

4:03 pm - 6:11 pm

ONT

HLN

25h 08m1 stop

6:48 pm - 11:56 pm

HLN

ONT

6h 08m1 stop

$409Alaska Airlines

ter, jan 27 - qui, jan 29

Alaska Airlines flights from Ontario to Helena

Our best Alaska Airlines deals on Ontario to Helena flight tickets

Alaska Airlines

Jan 28

ONT11:53 amOntario

5h 18m

1 stop

HLN6:11 pmHelena

Jan 31

HLN6:48 pmHelena

17h 11m

1 stop

ONT10:59 amOntario

$255

Alaska Airlines

Apr 24

ONT7:59 pmOntario

20h 46m

1 stop

HLN5:45 pmHelena

Apr 27

HLN6:22 pmHelena

16h 23m

1 stop

ONT9:45 amOntario

$303

Alaska Airlines

Apr 24

ONT10:39 amOntario

6h 06m

1 stop

HLN5:45 pmHelena

Apr 27

HLN6:22 pmHelena

6h 37m

1 stop

ONT11:59 pmOntario

$335

United Airlines flights from Ontario to Helena

Our best United Airlines deals on Ontario to Helena flight tickets

United Airlines

Feb 5

ONT5:05 amOntario

7h 36m

1 stop

HLN1:41 pmHelena

Feb 12

HLN2:25 pmHelena

7h 25m

1 stop

ONT8:50 pmOntario

$315

United Airlines

Apr 24

ONT1:43 pmOntario

6h 50m

1 stop

HLN9:33 pmHelena

Apr 27

HLN2:25 pmHelena

20h 31m

2 stops

ONT9:56 amOntario

$449

United Airlines

Jan 17

ONT1:24 pmOntario

7h 02m

1 stop

HLN9:26 pmHelena

Jan 20

HLN6:15 amHelena

7h 32m

1 stop

ONT12:47 pmOntario

$607

Fly from

Fly to

Route

Depart

Return

Price

OntarioHelena

ONT - HLN

ONTHLN

Ontario

qua 1/28

11:53 am-6:11 pm

1 stop5h 18m

Helena

sáb 1/31

6:48 pm-10:59 am

1 stop17h 11m

$255

OntarioHelena

ONT - HLN

ONTHLN

Ontario

qua 1/28

6:00 am-12:27 pm

1 stop5h 27m

Helena

sáb 1/31

1:10 pm-10:51 pm

2 stops10h 41m

$280

OntarioHelena

ONT - HLN

ONTHLN

Ontario

sex 4/24

7:59 pm-5:45 pm

1 stop20h 46m

Helena

seg 4/27

6:22 pm-9:45 am

1 stop16h 23m

$303

OntarioHelena

ONT - HLN

ONTHLN

Ontario

qui 2/5

5:05 am-1:41 pm

1 stop7h 36m

Helena

qui 2/12

2:25 pm-8:50 pm

1 stop7h 25m

$315

OntarioHelena

ONT - HLN

ONTHLN

Ontario

sex 4/24

10:39 am-5:45 pm

1 stop6h 06m

Helena

seg 4/27

6:22 pm-11:59 pm

1 stop6h 37m

$335

OntarioHelena

ONT - HLN

ONTHLN

Ontario

sex 5/1

10:39 am-5:45 pm

1 stop6h 06m

Helena

seg 5/4

6:22 pm-2:19 pm

2 stops20h 57m

$344

OntarioHelena

ONT - HLN

ONTHLN

Ontario

sex 4/3

6:00 am-5:45 pm

1 stop10h 45m

Helena

seg 4/6

6:22 pm-9:39 am

1 stop16h 17m

$364

OntarioHelena

ONT - HLN

ONTHLN

Ontario

qui 2/5

4:03 pm-6:11 pm

1 stop25h 08m

Helena

qui 2/12

4:36 pm-11:52 pm

2 stops32h 16m

$382

OntarioHelena

ONT - HLN

ONTHLN

Ontario

sex 4/10

7:00 am-5:45 pm

2 stops9h 45m

Helena

seg 4/13

6:22 pm-11:59 pm

1 stop6h 37m

$398

OntarioHelena

ONT - HLN

ONTHLN

Ontario

ter 1/27

4:03 pm-6:11 pm

1 stop25h 08m

Helena

qui 1/29

6:48 pm-11:56 pm

1 stop6h 08m

$409

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

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 48% 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 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 21m
Direct flights	None

The fastest flight from Ontario to Helena takes 4h 21m

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

Search flight deals

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 21m.
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 January 2026, 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 8,025 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.