Cheap flights from Ontario to Helena (ONT - HLN) from $148

This is the cheapest one-way flight price, found on 9/21. Prices may vary by date and flight preferences.
ONT — HLN
Sep 26 — Oct 31

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

Due to multiple factors, expect to potentially pay more when booking in May. For low rates, October can be a great choice for travel to Helena. Flights to Helena from Ontario in October are about $593 on average during October, but can be found for as low as $311.

When is the cheapest time to fly from Ontario to Helena (ONT - HLN)?

When flying from Ontario to Helena, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Cheap United Airlines flights from Ontario to Helena

Consider these cheap United Airlines flights we've found departing from Ontario to Helena. It's recommended that users confirm their flight details before booking.

Cheap Delta flights from Ontario to Helena

Have a look at some of the cheapest available Delta flights departing from Ontario and landing in Helena. Make sure to examine the flight information before completing your reservation.

Cheap Ontario to Helena flights in September & October 2023

The best prices found for ONT to HLN flights for September, October
Scroll through some of the best deals on flights from Ontario to Helena in 2023. Check back in a little while for more flight options.

Ontario to Helena 2023 flight deals

Cheap flights to Helena from Ontario found for this year
Scroll through some of the best deals on flights from Ontario to Helena in 2023. Check back in a little while for more flight options.

Ontario to Helena flights leaving soon

Late deals on return flights to Helena from Ontario, departing today and this week
Consider one of these great deals we found on last-minute flights from Ontario to Helena. Users should be sure to double check the price, date, and time of their last-minute flight.

One-way flights to Helena from Ontario

The cheapest one-way flights from Ontario to Helena
Users traveling one-way from Ontario to Helena can select one of these great deals. Those seeking round-trip flights from Ontario to Helena should utilize the search form at the the top of the page.

Find flights from Ontario to Helena within your budget

Use the slider to find flights from Ontario to Helena that fit your budget.

Fly from

Any airport

Fly to

Any airport

Budget

$436 - $532

Route

Depart

Return

Price

OntarioHelena

ONT - HLN

ONTHLN

Ontario

Tue 10/17

1 stop4h 13m

Helena

Wed 11/1

2 stops9h 12m

OntarioHelena

ONT - HLN

ONTHLN

Ontario

Tue 10/17

1 stop4h 13m

Helena

Mon 10/30

1 stop4h 15m

OntarioHelena

ONT - HLN

ONTHLN

Ontario

Wed 10/18

1 stop7h 03m

Helena

Wed 11/1

1 stop7h 31m

OntarioHelena

ONT - HLN

ONTHLN

Ontario

Wed 10/18

1 stop7h 03m

Helena

Tue 10/31

2 stops9h 14m

OntarioHelena

ONT - HLN

ONTHLN

Ontario

Tue 10/17

1 stop4h 13m

Helena

Wed 11/1

1 stop4h 15m

OntarioHelena

ONT - HLN

ONTHLN

Ontario

Tue 10/17

1 stop4h 13m

Helena

Tue 10/31

1 stop4h 15m

OntarioHelena

ONT - HLN

ONTHLN

Ontario

Mon 10/23

1 stop22h 52m

Helena

Wed 11/1

1 stop7h 31m

OntarioHelena

ONT - HLN

ONTHLN

Ontario

Wed 10/18

1 stop4h 13m

Helena

Mon 10/30

1 stop4h 15m

OntarioHelena

ONT - HLN

ONTHLN

Ontario

Tue 10/24

1 stop7h 03m

Helena

Fri 11/3

2 stops9h 14m

Flights are sorted by cheapest first

Deals found on 9/20

Reviews of airlines servicing Helena

Get a feel of what it's like to fly with United Airlines and Delta from Ontario to Helena by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.1
Very good
1,393 reviews

Entertainment

7.2

Boarding

8.3

Food

7.2

Comfort

8.0

Crew

8.6

Overall

8.1

Reviews

1 / 10

Didn't get any food so can't rate that. Flight attendants were really nice. Glad no masks were required. Overall a pleasant flight.

Alaska Airlines
8.1
Very good
1,393 reviews
Alaska Airlines
8.1
Very good
1,393 reviews

Entertainment

7.2

Boarding

8.3

Food

7.2

Comfort

8.0

Crew

8.6

Overall

8.1

Reviews

1 / 10

Didn't get any food so can't rate that. Flight attendants were really nice. Glad no masks were required. Overall a pleasant flight.

Delta
7.9
Good
3,016 reviews
Alaska Airlines
8.1
Very good
1,393 reviews

Entertainment

7.2

Boarding

8.3

Food

7.2

Comfort

8.0

Crew

8.6

Overall

8.1

Reviews

1 / 10

Didn't get any food so can't rate that. Flight attendants were really nice. Glad no masks were required. Overall a pleasant flight.

United Airlines
7.4
Good
1,887 reviews
Alaska Airlines
8.1
Very good
1,393 reviews

Entertainment

7.2

Boarding

8.3

Food

7.2

Comfort

8.0

Crew

8.6

Overall

8.1

Reviews

1 / 10

Didn't get any food so can't rate that. Flight attendants were really nice. Glad no masks were required. Overall a pleasant flight.

Related info for your journey

Useful info, stats and facts about Ontario to Helena flights.

Can I find flights from Ontario to Helena for under $500 on Cheapflights?

Yes, there are multiple flights from Ontario to Helena for under $500. The cheapest flight booked recently is on Delta for just $436, but on average you can expect to pay $551.

Are there last-minute flights available from Ontario to Helena for under $700?

There are currently 2+ open flights from Ontario to Helena within the next 7 days for less than $700.

What does ONT to HLN mean?

These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a Ontario Airport to Helena Airport flight would often be abbreviated as a ONT to HLN flight.

Alternative routes for Ontario to Helena

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Ontario to Helena

The chart below displays the airlines Cheapflights users traveling from Ontario to Helena choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$359Average$561FlexibilityNo cancel feeOn-timeN/A
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