ONT - BOI

$70 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 9/8. 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

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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

Thu, Feb 12 - Mon, Feb 16
Alaska Airlines Logo
6:22 pm - 9:39 pmONT-BOI
2h 17mnonstop
Alaska Airlines Logo
4:30 pm - 5:42 pmBOI-ONT
2h 12mnonstop
$157Alaska Airlines
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Thu, Oct 2 - Sat, Oct 4
 Logo
6:00 am - 1:21 pmONT-BOI
6h 21m1 stop
 Logo
2:16 pm - 9:56 pmBOI-ONT
8h 40m1 stop
Mon, Jan 12 - Wed, Jan 14
Hawaiian Airlines Logo
6:00 pm - 11:50 pmONT-BOI
4h 50m1 stop
Hawaiian Airlines Logo
1:30 pm - 4:53 pmBOI-ONT
4h 23m1 stop
$176Hawaiian Airlines
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Tue, Oct 14 - Tue, Oct 21
Delta Logo
6:37 am - 4:06 pmONT-BOI
8h 29m1 stop
Delta Logo
6:00 am - 9:05 amBOI-ONT
4h 05m1 stop
$217Delta
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Wed, Sep 10 - Sat, Sep 13
Delta Logo
11:40 am - 8:20 pmONT-BOI
7h 40m1 stop
Delta Logo
5:43 pm - 10:41 pmBOI-ONT
5h 58m1 stop
$226Delta
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Tue, Sep 30 - Thu, Oct 2
Southwest Logo
1:55 pm - 10:25 pmONT-BOI
7h 30m2 stops
Southwest Logo
11:35 am - 2:30 pmBOI-ONT
3h 55m1 stop
$231Southwest
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Wed, Jan 7 - Sun, Jan 11
Hawaiian Airlines Logo
6:00 pm - 11:50 pmONT-BOI
4h 50m1 stop
Hawaiian Airlines Logo
1:15 pm - 6:17 pmBOI-ONT
6h 02m1 stop
$256Hawaiian Airlines
Find Deal
Fri, Nov 7 - Tue, Nov 11
Southwest Logo
3:40 pm - 11:15 pmONT-BOI
6h 35m2 stops
Southwest Logo
2:30 pm - 8:00 pmBOI-ONT
6h 30m1 stop
$278Southwest
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Fri, Oct 31 - Tue, Nov 4
United Airlines Logo
6:00 am - 1:44 pmONT-BOI
6h 44m1 stop
United Airlines Logo
2:40 pm - 5:34 pmBOI-ONT
3h 54m1 stop
$297United Airlines
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Wed, Sep 10 - Fri, Sep 12
United Airlines Logo
5:10 am - 1:36 pmONT-BOI
7h 26m1 stop
United Airlines Logo
2:45 pm - 8:33 pmBOI-ONT
6h 48m1 stop
$304United Airlines
Find Deal
Booking Insights

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.

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, which saves you about 44% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 17 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$70
Best time to beat the crowds but there is an average 3% increase in price.
Most popular time to fly with an average 26% 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 $70 for a one-way ticket and $157 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?

    The Embraer 175 is the aircraft model that flies most regularly on the Ontario to Boise flight 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 $347 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 $249 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
7.8Comfort
8.1Boarding
7.0Entertainment
8.5Crew
7.1Food
Airline reviews

We were singled out, greeted and helped with check-in at the busy airport. They offered to take our bags there and gave no fuss when we said they were carry-on. With United just last week I had to put up a fight just to get onto the flight with my one authorized carry-on.

10.0 ExcellentDrew, Aug 2025SFO - AUS
Read more Alaska Airlines reviews

We were singled out, greeted and helped with check-in at the busy airport. They offered to take our bags there and gave no fuss when we said they were carry-on. With United just last week I had to put up a fight just to get onto the flight with my one authorized carry-on.

Seats extremely uncomfortable, no entertainment, no snacks, and when boarding, half of the passengers needed to check in the carry on luggage without any explanation.

I liked the crew. There was no food flight to short

Short flight was fine, but no entertainment and bathrooms broken.

2 FLIGHT DELAYS? what an inconvenience to stay @the airport HALF THE DAY😳from 1pm till boarding @ 4pm pass 😠exhausting !

boarding was late worst was going back LAX to SFO delayed not once ? but TWICE😡I was at the airport practically almost 5 hours of previous time , very inconvenient! i would have spend longer time with family , I was wanting to avoid TSA line? but it just got me to spend unwanted time @ d airport

You no longer give receipts for baggage at the counter. And it is next to impossible to get it on your webpage. Spent 20 min trying and gave up... I need receipt to submit for reimbursement and don't have time to waste on your poor webpage Disappointing .....

The flight was jumping between being delayed and closer to schedule about 5 times. Alaska air website showed incorrect times while google had latest info. This panic was horrible to deal with.

Flight was delayed - we left at 11:30 pm instead of 10:30 and it was extremely inconvenient. It affected both the day of the flight and the next day

Plane boarded and left on time or very close to the stated departure. Arrived on time. Staff was subdued. Could not hear the flight attendant too well. No announcement from the pilot which is always nice. Biggest complaint absolutely no little snacks! But the important thing is we left and arrived on time and we survived.

The cabin was quiet for the redeye flight. The area was clean. The staff was great. The 787 Max was in good condition. Drawbacks were that the seat widths were tight for some passengers. The seat padding was at best average and for a long flight uncomfortable.

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.

Having to up charge for a seat assignment is not good. Delta can do better

My husband upgraded our seats and I don't know if it was due to the type of planet was or if they didn't upgrade our seats. We were supposed to be in I believe comfort seats and they were just as tight as any other seat- no leg room and we are very tall people but at least it wasn't extremely cold. My husband did put in a complaint about our seating because he paid extra and if we would have known that the space and the tightness would have been the same, we just would have gotten the emergency row emergency row seats that we normally get. We love Delta but both our flights coming home we're not good. Oh I forgot to mention that on our flight to Hawaii our luggage wheels got broke and we had to purse new luggage on vacation then we never had this problem so we didn't know protocol and reported it after we got home only for them to tell is we only had 24hrs to report the damage. Not sure what was going on with Delta this vacation trip.

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.

Stuck on tarmac for two hours plus a 5.5 hour flight. Rude flight attendant. And no meals, not even for purchase!

I learned that seating towards the end of plane that a line forms for the restroom and people use your chair as a hand railing, bumping your seat consistently. I was seated in the aisle. I think that next time if I am towards the back row I would want to sit in the middle or window seat.

United sent me a mileage plus number last year but that number is invalid so I can’t use it to check into flights or collect mileage. There is human to speak about the problem, only computers who keep asking me if I am using the correct email. It’s so frustrating and I cannot resolve it.

Not a great experience. We paid for the upgrade for premium economy seats and seated ourselves in very comfortable seats. Someone came along with the same seat on their boarding pass. The aircraft had been changed and as a result we were booted out and sent further back to small uncomfortable seats. After complaining we were moved to emergency row seats, which gave us more leg room but the seats don’t recline. For people in our 70’s we found having to sit upright from California to NJ very uncomfortable. Not sure why they chose to move senior citizens instead of the two people that were allowed to take the more comfortable seats. Not happy.

Everything was great. Only thing that could’ve made it better was buy on board options for hot food, but the snacks were decent. The flight attendants were great. I had no complaints. I was able to make it to my destination safely

Boarded plane and then delayed 1.5 hours while on the plane

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.

4 hours late, including over +1 hour waiting in plane to take off. Baggage left behind too.

While waiting to claim my checked luggage, I discovered the airline had lost it. After a long wait and inquiries, I discovered it was on another flight. Fortunately, the airline finally sent my luggage home.

Was not able to watch most shows on the entertainment site. They would not load

Our flight was 1.5 hours delayed. There was no weather for the inbound flight, so I don't understand why. This meant a VERY late arrival and only a quick nap before my morning flight.

Delayed flight, so I switched fights to SFO to Phoenix , Phoenix to DSM. Excellent service through American Airlines

AA re-routed flight from HNL to LAX due to delay. My group of 3 with reserved seats in row 9 was broken up, with one assigned to a middle seat, another in the last row of the plane. Not happy. No explanation to the delay. No apologies. No compensation. Would have been nice to be offered an Admiral Club admission or a voucher for the extra 3 hours of layover in LAX. Could not hear the boarding gate announcements in LAX. Adjacent gate was boarding at the same time. Loud speakers were competing against each other. Barely made my boarding group.

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.

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