ONT - BIL

$134 Find Cheap Flights from Ontario to Billings

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Billings departing on 8/23. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Billings

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Billings, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Billings, as well as popular online travel agencies
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Flights Deals

Cheap Flights from Ontario to Billings (ONT-BIL)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Billings that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to Billings

Mon, Jul 28 - Fri, Aug 1
Delta Logo
5:09 pm - 12:07 amONT-BIL
5h 58m1 stop
Delta Logo
5:20 am - 8:47 amBIL-ONT
4h 27m1 stop
$241Delta
Find Deal
Sat, Sep 6 - Wed, Sep 10
Alaska Airlines Logo
7:10 am - 1:24 pmONT-BIL
5h 14m1 stop
Alaska Airlines Logo
6:00 am - 10:44 amBIL-ONT
5h 44m1 stop
$253Alaska Airlines
Find Deal
Sat, Oct 11 - Sat, Oct 18
Hawaiian Airlines Logo
6:00 am - 3:04 pmONT-BIL
8h 04m1 stop
Hawaiian Airlines Logo
7:18 pm - 11:59 pmBIL-ONT
5h 41m1 stop
$267Hawaiian Airlines
Find Deal
Fri, Oct 10 - Sat, Oct 18
Alaska Airlines Logo
6:00 am - 3:04 pmONT-BIL
8h 04m1 stop
Alaska Airlines Logo
7:18 pm - 11:59 pmBIL-ONT
5h 41m1 stop
$295Alaska Airlines
Find Deal
Fri, Oct 10 - Sun, Oct 19
Hawaiian Airlines Logo
6:00 am - 3:04 pmONT-BIL
8h 04m1 stop
Hawaiian Airlines Logo
6:00 am - 12:37 pmBIL-ONT
7h 37m1 stop
$305Hawaiian Airlines
Find Deal
Sat, Sep 6 - Wed, Sep 10
United Airlines Logo
5:10 am - 1:17 pmONT-BIL
7h 07m1 stop
United Airlines Logo
7:00 am - 5:37 pmBIL-ONT
11h 37m2 stops
$329United Airlines
Find Deal
Sat, Sep 6 - Wed, Sep 10
United Airlines Logo
1:42 pm - 10:46 pmONT-BIL
8h 04m2 stops
United Airlines Logo
7:00 am - 5:37 pmBIL-ONT
11h 37m2 stops
$334United Airlines
Find Deal
Tue, Aug 19 - Fri, Aug 22
American Airlines Logo
6:17 am - 9:30 pmONT-BIL
14h 13m2 stops
American Airlines Logo
7:00 am - 1:39 pmBIL-ONT
7h 39m1 stop
$335American Airlines
Find Deal
Tue, Aug 19 - Fri, Aug 22
American Airlines Logo
6:17 am - 9:30 pmONT-BIL
14h 13m2 stops
American Airlines Logo
7:00 am - 5:52 pmBIL-ONT
11h 52m2 stops
$340American Airlines
Find Deal
Fri, Jul 18 - Sun, Jul 27
Delta Logo
6:00 am - 11:04 amONT-BIL
4h 04m1 stop
Delta Logo
5:20 am - 8:47 amBIL-ONT
4h 27m1 stop
$495Delta
Find Deal
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KAYAK's insights & trends for Ontario to Billings flights

Get data-powered insights and trends into flights from Ontario to Billings to help you find the cheapest flights, the best time to fly and much more.

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

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

The average price of all round-trip flights from Ontario to Billings clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Billings on a Friday, as we generally find the cheapest rates on that day for this route. On the other hand, Monday is the most expensive day to fly from Ontario to Billings. For your return ticket, we recommend flying on a Monday and avoiding Fridays for the best deals.

Good to know

Low seasonOctober
High seasonMay
Cheapest flight$134
Best time to beat the crowds with an average 28% drop in price.
Most popular time to fly and prices are also 22% lower on average.
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
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Ontario to Billings

  • What is the cheapest flight from Ontario to Billings?

    In the last 3 days, the lowest price for a flight from Ontario to Billings was $134 for a one-way ticket and $241 for a round-trip.

  • Do I need a passport to fly between Ontario and Billings?

    No, a passport isn't needed to fly from Ontario to Billings. However, local authorities might ask for an official ID.

  • Which airports will I be using when flying from Ontario to Billings?

    Ontario airport is called Ontario and the only airport in Billings is Billings Logan Intl.

  • Which aircraft models fly most regularly from Ontario to Billings?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Ontario to Billings?

    SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between Ontario and Billings, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from Ontario to Billings, Delta or Alaska Airlines?

    The two airlines most popular with KAYAK users for flights from Ontario to Billings are Delta and Alaska Airlines. With an average price for the route of $319 and an overall rating of 8.0, Delta is the most popular choice. Alaska Airlines is also a great choice for the route, with an average price of $367 and an overall rating of 8.0.

  • How does KAYAK find such low prices on flights from Ontario to Billings?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Billings.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Billings?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Billings from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Ontario to Billings?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Billings with an airline and back to Ontario with another airline. Booking your flights between Ontario and BIL can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Billings?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Billings from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from Ontario to Billings

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Billings. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Ontario to Billings? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Alaska AirlinesOverall score based on 10000 reviews
8.1Boarding
7.1Entertainment
7.1Food
8.5Crew
7.8Comfort
Airline reviews

fine. only problem,,,, for some,,,,was that many people started trying to exit from the back of the plane,, . lots of irate people. there should be a flight attendant mid plane..to be sure that doesn't happen. The crew up front had no idea what was happening. One big guy started it..then a bunch of others followed his lead. could have gotten ugly... One man stepped in and questioned those rule breakers.. nothing bad happened,,,but......

8.0 ExcellentLiz, Jul 2025SFO - SEA
Read more Alaska Airlines reviews

fine. only problem,,,, for some,,,,was that many people started trying to exit from the back of the plane,, . lots of irate people. there should be a flight attendant mid plane..to be sure that doesn't happen. The crew up front had no idea what was happening. One big guy started it..then a bunch of others followed his lead. could have gotten ugly... One man stepped in and questioned those rule breakers.. nothing bad happened,,,but......

The setting on the loudspeaker was painful and the crew member who did the talking spoke very quickly and repetitively, with extra little jokes that were distracting and mostly unfunny. I doubt that the main messages penetrated the noise.

I like the new adjustable headrest. Unfortunately 2 crying children were in front of us. But it was the first time and not holding Alaska accountable for that. Alaska always seems to have everything in order professional but comfortable.

Eddie, our flight attendant in the back was excellent. He was very kind and concerned for our happiness and comfort before and during our flight. He made the experience great. We had to deplane due to a ground delay and he made sure we had snacks and water to keep us comfortable while we waited. Overall, it was a great experience!

Flight was delayed which caused us to have to change our connecting flight. Grilled cheese sandwich was served very hot.

Big delay of over 7 hours on next leg of trip with Alaska. Would have been nice to have food or something

We were late so that was what was worst part

Very bad, terrible food and late by 2 hours. Then no to open aircraft doors

The Alaska app and website were not fully operational. I had to spend about 15 minutes at the counter doing things that should have been completed online. The agent was very nice and helpful, however.

Flying on Hawaiian Airlines was good. But, getting a boarding pass was a hassle. I booked what I thought was an Alaska Airlines flight that was actually a Hawaiian Airlines flight. I couldn't check in online. I had to wait for the Hawaiian Airlines counter to open so I could get my boarding pass which was a requirement for me to get in The Club or the Centurion Lounge. (I had no check in luggage so I didn't expect to have to physically check in.) The Alaska Airlines staff blamed the FAA for the problem.

Crew was excellent. Comfort seats not as nice as other kinds of planes.

It was a great flight and the stewards and stewardess were all kind and accommodating!! The seats were comfortable and entertainment screen excellent!

There are 4 flights in consecutive gates with about the same departure time. Two flights were boarding at the same time. One was delayed or boarding would be happening at the same time. I am not sure what Delta and LAX need to do to have a better layout at the end of Terminal 2

There was a security issue at the airport and we were unable to land. We circled endlessly and then landed at another airfield for fuel. We then circled the airport again, almost landed but didn’t fully touch down before circling again. I am thankful to the crew for keeping us safe- the issue was the airline and staff at the airport getting us seats on our connecting flights. That part was hours of searching for someone and getting in double my steps.

Most aspects were good however if they assign boarding zones they ought to enforce them or why bother? My luggage from SAN-JFK-MAD was lost in NY so I without my main bag for two days upon arrival in Spain. They were helpful in tracking it and eventually delivered it to my hotel. The flub was because of a delay upon arrival in NYC. I had booked 2 1/2 hours between flights but we had to hold on the taxiway for an hour after landing while waiting for a clear gate which likely caused the baggage error.

Excellent flight, the planes were newer, they did a nice job with boarding, great service overall.

It would be nice if was given wires ear buds. Overall was a good experience was able to sleep on the plane

737-800 in first class was pretty dumpy. Seat had an uncomfortable angle, storage under the seat was blocked so even my very modest backpack didn't fit, power outlet was flaky. Weird tiny seat pockets that couldn't hold a gallon ziploc bag, emesis bag missing, etc. etc. No in-flight service due to turbulence. Crew was excellent, boarding was smooth despite a full flight.

Delta flight was on time, seats were comfortable, and crew was nice.

Thank you for not flipping the plane on the run way. You guys get a 5 star rating for the flight!!!

Horrific. They missed my connecting flight to San Diego. I didn’t get there until Monday at 9am when I had a mandatory court settlement conference scheduled at 6am since we had parties on the east coast. This caused many issues. All because United apparently forgot to hold the doors open until my flight landed that only had a 10 minute delay. This was the last flight to Southern California. So I couldn’t even rent a car to finish the trip. United cannot be trusted when traveling on specific days and times since weather didn’t have anything to do with the delays.

Really good 😊 the woman at the gate entrance was a little rude checking in our carry-on but i dont think she worked for the airline, she worked for the airport at sacramento, other than that amazing.

it was so bad. I tried to board my flight from vancouver to saskatoon. And to my surprise they did not board me cause the flight was changed and no email was send to me. and on my boarding pass which i got from seattle says different flight. I did not knew anyone from Vancouver, air canada crew was rude, i asked for today flight but they were rude and i had early morning dental appointment in saskatoon. I was so much in pain and my whole day is wasted today. and i suffered alot. They did provide me hotel but they did not provide me any food. I am really really disappointed first time had so bad experience with air canada. I may think twice to book it again. If i can get any reply or any composition that would be great. Thanks

Very comfortable (upgraded to business class). The audio on my screen didn’t work, but I managed to play the audio through my phone while watching the screen.

I was supposed to be on business class at first class from Denver back to Miami due to weather changes. I missed my connection and it’s put on a flight to Fort Lauderdale. Instead of honoring my business class/1st class ticket, they put me in coach, but there were two first class seats open. I think it’s absolutely disgusting that I paid for first class $1300 ticket and they put me in economy and they had to open seats available and I have still not been refunded the difference. I ended up having to eat a snack box instead of the meal I was supposed to get and did not get home till 2 AM so I think that’s a little pathetic that I had to live off crackers for dinner And my poor dog ate some cheese and salami. Oh yes, apparently when they switched me to the new flight they forgot to mention I had a service dog

Boarding seemed to be organized bedlam. For what ever reason, preboarding took longer than 20 minutes. Made the plane 20 minutes late taking off. Luckily we arrived on time. Flight crew seemed very friendly. Only slight turbulence.

The personnel were professional and friendly. The Boeing 737 Max 9 is too claustrophobic and was very warm at both airport gates, and still warm in the air.

While the staff was pleasant and helpful, the following observations are for your awareness. There was some delay on the tarmac on take off and landing. The paid lunch/food offerings were limited. Entertainment was only available on WiFi at a cost.

get E+, a must for 5 hours flight if you are tall

The first flight was better in terms of the aircraft.

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