HLN - ONT

$303 Find Cheap Flights from Helena to Ontario - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$336
Typical prices: $310-$556
Alaska Airlines
Tue 11/6Tue 11/13
HLN - ONT • 1 stop
Cheapest one-way
$303
Typical prices: $199-$368
United Airlines
Sun 10/14
HLN - ONT • 1 stop
Top layover airports
Seattle/Tacoma Intl (SEA)
Cheapest • Avg $274 (round-trip)
Salt Lake City (SLC)
Shortest trip • 4h 34m (one-way)
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Cheap Flights from Helena to Ontario (HLN-ONT)

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

Recent round-trip flight deals from Helena to Ontario

Fri, Nov 6 - Fri, Nov 13
Alaska Airlines Logo
4:41 pm - 11:06 pmHLN  Helena-ONT Ontario
7h 25m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
6:00 am - 4:04 pmONT  Ontario-HLN Helena
9h 04m1 stop Seattle/Tacoma Intl
$336Alaska Airlines
Sat, Nov 7 - Fri, Nov 13
Delta Logo
1:08 pm - 4:23 pmHLN  Helena-ONT Ontario
4h 15m1 stop Salt Lake City
Delta Logo
5:04 pm - 10:26 pmONT  Ontario-HLN Helena
4h 22m1 stop Salt Lake City
$349Delta
Tue, Nov 3 - Wed, Nov 11
Delta Logo
1:08 pm - 4:23 pmHLN  Helena-ONT Ontario
4h 15m1 stop Salt Lake City
Delta Logo
6:00 am - 12:27 pmONT  Ontario-HLN Helena
5h 27m1 stop Salt Lake City
$349Delta
Sat, Nov 7 - Thu, Nov 12
Delta Logo
7:15 am - 12:36 pmHLN  Helena-ONT Ontario
6h 21m1 stop Salt Lake City
Delta Logo
6:00 am - 12:27 pmONT  Ontario-HLN Helena
5h 27m1 stop Salt Lake City
$349Delta
Sun, Nov 8 - Sat, Nov 14
Delta Logo
1:08 pm - 4:23 pmHLN  Helena-ONT Ontario
4h 15m1 stop Salt Lake City
Delta Logo
6:00 am - 12:27 pmONT  Ontario-HLN Helena
5h 27m1 stop Salt Lake City
$349Delta
Sat, Nov 7 - Wed, Nov 11
Delta Logo
7:15 am - 12:36 pmHLN  Helena-ONT Ontario
6h 21m1 stop Salt Lake City
Delta Logo
6:00 am - 12:27 pmONT  Ontario-HLN Helena
5h 27m1 stop Salt Lake City
$349Delta
Fri, Nov 6 - Sat, Nov 14
Delta Logo
1:08 pm - 4:23 pmHLN  Helena-ONT Ontario
4h 15m1 stop Salt Lake City
Delta Logo
5:04 pm - 10:32 pmONT  Ontario-HLN Helena
4h 28m1 stop Salt Lake City
$349Delta
Sat, Nov 7 - Sat, Nov 14
Delta Logo
7:15 am - 12:36 pmHLN  Helena-ONT Ontario
6h 21m1 stop Salt Lake City
Delta Logo
6:00 am - 12:27 pmONT  Ontario-HLN Helena
5h 27m1 stop Salt Lake City
$349Delta
Tue, Nov 3 - Thu, Nov 12
Delta Logo
7:15 am - 12:36 pmHLN  Helena-ONT Ontario
6h 21m1 stop Salt Lake City
Delta Logo
5:04 pm - 10:26 pmONT  Ontario-HLN Helena
4h 22m1 stop Salt Lake City
$349Delta
Mon, Nov 9 - Sat, Nov 14
Delta Logo
7:00 am - 12:17 pmHLN  Helena-ONT Ontario
6h 17m1 stop Salt Lake City
Delta Logo
5:04 pm - 10:32 pmONT  Ontario-HLN Helena
4h 28m1 stop Salt Lake City
$349Delta
Booking Insights

Price, demand and travel trends for Helena to Ontario flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Helena to Ontario with more confidence.

How much is a round-trip flight from Helena to Ontario?

Round-trip flights from Helena to Ontario start at $336. Prices are typical for this route right now, with typical round-trip fares ranging from $310 to $556. The lowest price found in the past 5 days was $336 on Alaska Airlines.

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Key details for Helena to Ontario flights

Cheapest flight

$303
Flight from Helena to Ontario

When to book flights from Helena to Ontario

Are your dates flexible? Find out the best times to travel from Helena to Ontario based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Helena to Ontario flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

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

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

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

    Two cabin classes are available on flights from Helena to Ontario:

    • Economy Class
    • First Class

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

    One-stop flights from Helena to Ontario most commonly connect through:

    • Salt Lake City (SLC) - 80% of one-stop connections
    • Denver Intl (DEN) - 13% of one-stop connections
    • Seattle/Tacoma Intl (SEA) - 7% of one-stop connections

    Salt Lake City (SLC) handles the largest share of one-stop connections on this route.

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

    Yes. Being flexible with your travel dates can save you up to 62% on the Helena to Ontario route. Wednesday is the cheapest departure day at $216 round-trip on average, while Saturday is the most expensive at $556, a difference of $340. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What popular places can I visit in Ontario?

    Some of the most popular sights in Ontario are Ontario Convention Center, Ontario Mills and Cucamonga-Guasti Regional Park. These are among the most viewed places in Ontario on KAYAK.

  • How long is a flight from Helena to Ontario?

    There are currently no nonstop flights available from Helena to Ontario. Flights with 1 layover take between 4h 34m and 8h 04m in total, depending on the connection.

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

    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 Helena to Ontario 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 $336 to $1,437. That means the highest observed fare was about 4x higher than the lowest one.

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

    One-way fares from Helena to Ontario are currently higher than usual. Average one-way flight prices are about $450, which is 41% above the typical average for this route.

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

    Flying via Salt Lake City (SLC) gives the shortest average 1-stop total travel time at 4h 34m, compared with 7h 29m via Denver Intl (DEN) and 8h 04m via Seattle/Tacoma Intl (SEA).

  • What is the time difference between Helena and Ontario?

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

  • What car rental options are available at Ontario Airport (ONT)?

    Ontario Airport (ONT) hosts 5 major car rental companies, with daily rates starting from around $18 for economy cars. Top options include:
    • Fox
    • Thrifty
    • Europcar
    • Dollar
    • Alamo

  • How much should I expect to pay for a Helena to Ontario flight?

    Round-trip flights from Helena to Ontario range from $310 to $556, with an average of $353 over the past 12 months. Anything below $310 counts as a good deal.

Your guide to booking Helena to Ontario flights

Get tips on when to book, when to fly and what to know before your trip.

More options for your flight from Helena to Ontario

Complete your trip to Ontario with a hotel stay or car rental

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