ONT - BOI

$99 Find Cheap Flights from Ontario to Boise

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 Boise departing on 8/31. 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 Boise

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Boise, 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 Boise, as well as popular online travel agencies
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Cheap Flights from Ontario to Boise (ONT-BOI)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Boise 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 Boise

Wed, Sep 3 - Sun, Sep 7
Frontier Logo
12:59 am - 11:40 amONT-BOI
9h 41m1 stop
Frontier Logo
12:25 pm - 7:54 pmBOI-ONT
8h 29m1 stop
$166Frontier
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Wed, Aug 13 - Tue, Aug 19
American Airlines Logo
12:22 pm - 8:10 pmONT-BOI
6h 48m1 stop
American Airlines Logo
1:50 pm - 11:32 amBOI-ONT
22h 42m1 stop
$230American Airlines
Find Deal
Mon, Aug 11 - Thu, Aug 14
Alaska Airlines Logo
6:00 am - 3:04 pmONT-BOI
8h 04m1 stop
Alaska Airlines Logo
8:46 pm - 11:05 amBOI-ONT
15h 19m1 stop
$236Alaska Airlines
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Sat, Aug 9 - Mon, Aug 11
Southwest Logo
4:55 pm - 11:05 pmONT-BOI
5h 10m1 stop
Southwest Logo
5:45 am - 8:15 amBOI-ONT
3h 30m1 stop
$239Southwest
Find Deal
Fri, Sep 5 - Mon, Sep 8
Alaska Airlines Logo
7:40 pm - 10:35 amONT-BOI
13h 55m1 stop
Alaska Airlines Logo
5:45 pm - 12:03 amBOI-ONT
7h 18m1 stop
$243Alaska Airlines
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Sun, Aug 3 - Tue, Aug 5
Delta Logo
5:09 pm - 12:09 amONT-BOI
6h 00m1 stop
Delta Logo
12:50 pm - 4:29 pmBOI-ONT
4h 39m1 stop
$244Delta
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Sat, Aug 9 - Mon, Aug 11
Southwest Logo
5:45 am - 1:45 pmONT-BOI
7h 00m2 stops
Southwest Logo
5:45 am - 8:15 amBOI-ONT
3h 30m1 stop
$245Southwest
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Sat, Aug 16 - Sun, Aug 17
Delta Logo
6:00 am - 1:06 pmONT-BOI
6h 06m1 stop
Delta Logo
5:45 am - 10:50 amBOI-ONT
6h 05m1 stop
$251Delta
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Sat, Aug 2 - Mon, Aug 4
 Logo
12:59 am - 11:46 amONT-BOI
9h 47m1 stop
 Logo
5:43 pm - 12:15 amBOI-ONT
7h 32m1 stop
Wed, Jul 16 - Sat, Jul 26
 Logo
12:59 am - 11:46 amONT-BOI
9h 47m1 stop
 Logo
7:12 pm - 12:15 amBOI-ONT
6h 03m1 stop
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KAYAK's insights & trends for Ontario to Boise flights

Get data-powered insights and trends into flights from Ontario to Boise 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 Boise?

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

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

If you are looking for a flight deal from Ontario to Boise, look for departures on Thursdays and avoid leaving on a Friday, as it's usually the priciest day. When flying back from Boise, Tuesday is the cheapest day to fly and Sunday is the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to Boise, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Ontario to Boise is January, where tickets cost $240 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $406 and $376 respectively.

How far in advance should I book a flight from Ontario to Boise?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Ontario to Boise, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Ontario to Boise, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 17 weeks before departure.

Good to know

Low seasonFebruary
High seasonJuly
Cheapest flight$99
Best time to beat the crowds but there is an average 4% increase in price.
Most popular time to fly with an average 5% increase in price.
Flight from Ontario to Boise

When to book flights from Ontario to Boise

Are your dates flexible? Find out the best times to travel from Ontario to Boise 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 Boise

  • What seat selection options are available on Alaska Airlines flights from Ontario to Boise?

    Alaska Airlines provides several seat selection options to its passengers. Preferred Seats provide passengers with extra legroom and are located near the front of the cabin. Alaska Airlines also offers premium class seats that provide passengers with more space, wider seats, and additional amenities. Exit Row Seats provide extra legroom, and passengers must meet specific safety requirements to sit in an exit row. Exit row seats are available for purchase for an additional fee.

  • What services does United Airlines offer Economy Class passengers on flights from Ontario to Boise?

    United Airlines provides several services and amenities to its Economy Class passengers on flights. Passengers can enjoy a selection of movies and are offered a complimentary snack and beverage. United offers in-flight Wi-Fi on most of its flights for a fee or through a pre-purchased package. The airline also offers complimentary access to Wi-Fi messaging.

  • What is the luggage allowance on American Airlines flights from Ontario to Boise?

    American Airlines' luggage allowance policy varies depending on the ticket class and frequent flyer status. Basic Economy passengers are only allowed to bring one personal item on board and are not permitted to bring a full-size carry-on bag. Main Cabin passengers are allowed to bring one carry-on bag and one personal item on board and one checked bag for a fee.

  • How do I get from Boise Airport (BOI) to the city center?

    Taxis are available at BOI airport and can take you to the city center in about 10-15 minutes. The cost can vary, but it is usually around $15-$20. Companies like Uber and Lyft are available at the airport and can take you to the city center. The cost and duration of the ride can vary depending on traffic conditions. The Valley Regional Transit (VRT) operates several bus routes in the Boise area, including a route that stops at the airport. The route 10 bus can take you to Downtown Boise from the airport. The cost of the ride is $2, and the duration is about 35-45 minutes.

  • What is the cheapest flight from Ontario to Boise?

    In the last 3 days, the lowest price for a flight from Ontario to Boise was $99 for a one-way ticket and $166 for a round-trip.

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

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

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

    Ontario airport is called Ontario and the only airport in Boise is Boise Air Term. Gowen Fld.

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

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

  • Which airline alliances offer flights from Ontario to Boise?

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

  • Which is the best airline for flights from Ontario to Boise, Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from Ontario to Boise are Southwest and Delta. With an average price for the route of $346 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $288 and an overall rating of 8.0.

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

    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 Boise.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Boise 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 Boise?

    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 Boise with an airline and back to Ontario with another airline. Booking your flights between Ontario and BOI 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 Boise?

    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 Boise from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Ontario to Boise

  • Flights from Ontario to Boise have layovers in different cities depending on the airline. Some of them include Phoenix (PHX), Salt Lake City (SLC), San Francisco (SFO), and Seattle (SEA).
  • United Airlines provides assistance to passengers with reduced mobility on flights from Ontario to Boise. Passengers can request assistance from airport staff to help them navigate between terminals and on board.
  • American Airlines uses Terminal 4 at Ontario International Airport (ONT) for flights to Boise. It is important to note that the terminal may change, so it is recommended to check at the information desks before the flight.
  • Delta Airlines is working to optimize its operations to reduce fuel burn and emissions. This includes reducing taxi time, optimizing flight routes, and improving the efficiency of ground operations even for flights from Ontario to Boise.
  • Southwest Airlines offers several services to families with kids on flights from Ontario to Boise. The airline provides an unaccompanied minor service to children between the ages of 5 and 11 years old and a family boarding process where a family with children aged 6 or under will find seats together.

Reviews of the top 5 airlines serving from Ontario to Boise

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Boise. 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 Boise? 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
7.1Food
7.8Comfort
8.5Crew
8.1Boarding
7.1Entertainment
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.

Delayed flight. Nicest crew member was a SW pilot flying seated next to me who kindly move to seat the final passenger. Flight extra delayed. My cup of refreshment of ginger ale was so packed with ice it was literally 2 sips.

No trays in our seats, we sat in first row, purchased a business class fare. Had to hold our drinks and snack in our hands. No plugs for our cell phones. Had to pay for it a drink cocktail each. Seats so uncomfortable.

Flight wasn’t even full, but too many carry-ons caused us to run out of bin space. New bag fee has folks who would usually check their bags carrying on. Watching Southwest morph into Spirit/Frontier is so sad to watch

Southwest is Southwest. No frills. If you're luck enough to get a happy crew (we did), then it makes for a nicer flight.

It was a perfect flight in all aspects! Both legs!

Great flight, 47 passengers on a 180 seat plane. Stewardess was pleasant and cheerful.

I liked the crew member who gave flight instructions on "in case of a problem:. The seats are so small that only a young teenager could sit in middle seat.

Great flight staff. Ease of boarding. Overall, very uneventful and easy trip.

Employees were kind and funny, as always! Flight was late but no announcements were made for people with tight connections to help them transition quickly. No service due to turbulence.

I recently flew Southwest from San Jose to Honolulu. I was very impressed with the flight crew, especially the flight attendant in charge of the front of the plane. She came through the aisle at least five times for drinks and water, and two times for snacks. I have not seen such service since I flew first class. Also, for the first time, they gave us the correct baggage claim number, and the luggage came out quickly. I can't wait for Southwest to have assigned seating! I absolutely hate the Cattle Call boarding procedure and the mad dash to get seats and overhead bins. However, the boarding was efficient.

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.

Almost a 6 hour flight and the only food option is a cheese plate… and chips. Also how is it there are no options for texting on American. I’ll be going back to delta and united.

The chair cushions may need an upgrade. I have been noticing they are so worn out, thin so you’d sit in a dip 😄. Other than that, all was an enjoyable trip. Thanks AA!

Cramped seats. FAA should make airlines have more legroom, for even short people complain

Eventless. It was a good flight and good crew. Can’t complaint.

Very helpful ground crew after an earlier flight delay and being rebooked on a different flight.

The plane was late and then sat on the runway for almost 45 minutes before taking off.

We kept being told that the flight was full and that all overhead compartments were full and therefore had to check in our hand luggage. We were some of the last people to board and noticed that there was still sufficient space in the overhead compartments. We were obliged to check in hand luggage when there was space and so had to wait at luggage retrieval which took a while to then noticed damage to our luggage - not a great experience!

This was an overnight flight. There was no meal service in first class, just a simple snack basket was offered along with beverages. There should have been some type of continental breakfast prior to arrival in PHL. As an Executive Platinum American Airlines Advantage member, I received no name recognition from the first class flight attendant. When disembarking at PHL, the flight attendants were more interested in their cell phones than saying "thank you" to the passengers as they disembarked.

The flight was quick and to the point. The crew just did their job w/o excessive talking and everything was just perfect.

Awkward carry on process. Forced to check all carry on. No overhead space of worthiness. Left delayed, but made up the time. Crew was amicable.

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