ONT - BIL

$151 Find Cheap Flights from Ontario to Billings - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$305
Typical prices: $341-$590
Multiple Airlines
Tue 10/2Fri 10/5
ONT - BIL • 1 stop
Cheapest one-way
$151
Typical prices: $203-$300
Multiple Airlines
Tue 9/25
ONT - BIL • 1 stop
Nonstop flights
Not available
There are currently no direct flights between Ontario and Billings. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to travel
February
Cheapest • 12% price drop
October
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Las Vegas Harry Reid Intl (LAS)
Cheapest • Avg $307 (round-trip)
Salt Lake City (SLC)
Shortest trip • 4h 41m (one-way)
Insights
Insights
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Flight Deals

Cheap Flights from Ontario to Billings (ONT-BIL)

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

Recent round-trip flight deals from Ontario to Billings

Fri, Oct 2 - Mon, Oct 5
Multiple Airlines Logo
2:30 pm - 9:32 pmONT  Ontario-BIL Billings Logan Intl
6h 02m1 stop Las Vegas Harry Reid Intl
Multiple Airlines Logo
10:20 pm - 9:09 amBIL  Billings Logan Intl-ONT Ontario
11h 49m1 stop Las Vegas Harry Reid Intl
$305Multiple Airlines
Wed, Nov 11 - Sat, Nov 14
Alaska Airlines Logo
7:15 am - 2:52 pmONT  Ontario-BIL Billings Logan Intl
6h 37m1 stop Portland
Alaska Airlines Logo
11:55 am - 6:17 pmBIL  Billings Logan Intl-ONT Ontario
7h 22m1 stop Seattle/Tacoma Intl
$369Alaska Airlines
Mon, Sep 14 - Thu, Sep 17
Delta Logo
5:15 pm - 10:34 pmONT  Ontario-BIL Billings Logan Intl
4h 19m1 stop Salt Lake City
Delta Logo
5:20 am - 9:02 amBIL  Billings Logan Intl-ONT Ontario
4h 42m1 stop Salt Lake City
$371Delta
Mon, Nov 16 - Fri, Nov 20
Alaska Airlines Logo
5:59 pm - 2:52 pmONT  Ontario-BIL Billings Logan Intl
19h 53m1 stop Portland
Alaska Airlines Logo
12:01 pm - 8:03 pmBIL  Billings Logan Intl-ONT Ontario
9h 02m1 stop Seattle/Tacoma Intl
$371Alaska Airlines
Wed, Oct 21 - Sat, Oct 24
Alaska Airlines Logo
7:25 am - 3:04 pmONT  Ontario-BIL Billings Logan Intl
6h 39m1 stop Portland
Alaska Airlines Logo
3:44 pm - 8:15 pmBIL  Billings Logan Intl-ONT Ontario
5h 31m1 stop Portland
$376Alaska Airlines
Fri, Nov 13 - Sun, Nov 15
United Airlines Logo
1:29 pm - 9:14 pmONT  Ontario-BIL Billings Logan Intl
6h 45m1 stop Denver Intl
United Airlines Logo
2:42 pm - 8:51 pmBIL  Billings Logan Intl-ONT Ontario
7h 09m1 stop Denver Intl
$421United Airlines
Wed, Sep 16 - Wed, Sep 30
United Airlines Logo
5:00 am - 1:21 pmONT  Ontario-BIL Billings Logan Intl
7h 21m1 stop Denver Intl
United Airlines Logo
7:00 am - 12:46 pmBIL  Billings Logan Intl-ONT Ontario
6h 46m1 stop Denver Intl
$422United Airlines
Wed, Sep 16 - Sat, Sep 26
Delta Logo
5:15 pm - 10:34 pmONT  Ontario-BIL Billings Logan Intl
4h 19m1 stop Salt Lake City
Delta Logo
6:33 pm - 10:04 pmBIL  Billings Logan Intl-ONT Ontario
4h 31m1 stop Salt Lake City
$430Delta
Sun, Dec 20 - Mon, Dec 21
American Airlines Logo
9:30 am - 8:59 pmONT  Ontario-BIL Billings Logan Intl
10h 29m2 stops Phoenix Sky Harbor Intl Dallas/Fort Worth
American Airlines Logo
7:25 am - 12:40 pmBIL  Billings Logan Intl-ONT Ontario
6h 15m1 stop Phoenix Sky Harbor Intl
$660American Airlines
Fri, Oct 2 - Mon, Oct 5
American Airlines Logo
2:22 pm - 11:57 amONT  Ontario-BIL Billings Logan Intl
20h 35m2 stops Dallas/Fort Worth Chicago O'Hare Intl
American Airlines Logo
6:00 am - 10:53 pmBIL  Billings Logan Intl-ONT Ontario
17h 53m2 stops Dallas/Fort Worth Phoenix Sky Harbor Intl
$756American Airlines
Booking Insights

Price, demand and travel trends for Ontario to Billings flights

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

What's the cheapest day of the week to fly from Ontario to Billings?

Monday is the cheapest day of the week to fly from Ontario to Billings, it is 11% cheaper than the average day. Wednesday is the most expensive day with flight prices 53% higher than average. Based on deals found by KAYAK users in the last 12 months.

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Key details for Ontario to Billings flights

Low season

January

Cheapest flight

$151
Best time to beat the crowds but there is an average 12% increase in price.
Most popular time to fly with an average 31% increase in price.
Flight from Ontario to Billings

When to book flights from Ontario to Billings

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

Your Ontario to Billings 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 Ontario to Billings?

    Flights from Ontario to Billings usually depart from Ontario (ONT) and arrive at Billings Logan Intl (BIL).

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

    Only Economy Class is available on flights from Ontario to Billings.

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

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

    • Salt Lake City (SLC) - 62% of one-stop connections
    • Denver Intl (DEN) - 17% of one-stop connections
    • Seattle/Tacoma Intl (SEA) - 12% of one-stop connections
    • Portland (PDX) - 6% 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 Ontario to Billings?

    Yes. Being flexible with your travel dates can save you up to 42% on the Ontario to Billings route. Monday is the cheapest departure day at $341 round-trip on average, while Wednesday is the most expensive at $585, a difference of $244. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • How long is a flight from Ontario to Billings?

    A nonstop flight from Ontario to Billings takes 0h 00m, covering 941 miles.

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

    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 Ontario to Billings 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 $305 to $1,822. That means the highest observed fare was about 6x higher than the lowest one.

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

    One-way fares from Ontario to Billings are currently higher than usual. Average one-way flight prices are about $285, which is 21% above the typical average for this route.

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

    Flying via Salt Lake City (SLC) gives the shortest average 1-stop total travel time at 4h 41m, compared with 5h 08m via Phoenix Sky Harbor Intl (PHX) and 5h 51m via Seattle/Tacoma Intl (SEA).

  • What is the time difference between Ontario and Billings?

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

  • What car rental options are available at Billings Logan Intl Airport (BIL)?

    Billings Logan Intl Airport (BIL) hosts 5 major car rental companies, with daily rates starting from around $11 for economy cars. Top options include:
    · Rent-A-Wreck
    · Budget
    · Avis
    · Alamo
    · Hertz

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

    Round-trip flights from Ontario to Billings range from $341 to $590, with an average of $380 over the past 12 months. Anything below $341 counts as a good deal.

Your guide to booking Ontario to Billings flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Monday departure instead of Wednesday. On this route, Monday flights average $341 - about $244 less than Wednesday (42% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Ontario to Billings trip for February. Fares historically average $334 round-trip in that month - typically $304 less than the most expensive month, which is July (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Billings Logan Intl Airport.
    - Hilltop Inn by Riversage

Everything you need to know for your flight from Ontario to Billings

Information on your arrival and departure airports

Ontario (ONT)
Billings (BIL)