BOI - ONT

$94 Find Cheap Flights from Boise to Ontario - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boise to Ontario departing on 8/22. 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, 0 bags

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Everything you should know

Cheapest round-trip
$177
Typical prices: $246-$492
Alaska Airlines
Tue 9/29Wed 10/21
BOI - ONT • Non-stop
Cheapest non-stop
$177
Typical prices: $237-$284
Alaska Airlines
Tue 9/29Sat 10/17
BOI - ONT • Non-stop
Top airlines
Cheapest • from $177 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
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Airline reviews
Airline reviews
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Nonstop flights
You can fly direct with Alaska Airlines. Average duration is 2h 07m
Direct flights
Direct flights
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Direct flights
Direct flights
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Top layover airports
Cheapest • Avg $287 (round-trip)
Shortest trip • 4h 03m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 51% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 27% price drop
Most popular
Good to know
Good to know
+1
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Boise to Ontario (BOI-ONT)

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

Tue, Sep 29 - Wed, Oct 21
Alaska Airlines Logo
3:02 pm - 4:10 pm
BOI
-
ONT
2h 08mnonstop
Alaska Airlines Logo
4:42 pm - 7:42 pm
ONT
-
BOI
2h 00mnonstop
$177Alaska Airlines
Sat, Aug 22 - Mon, Aug 24
Alaska Airlines Logo
3:02 pm - 4:10 pm
BOI
-
ONT
2h 08mnonstop
Alaska Airlines Logo
4:50 pm - 7:45 pm
ONT
-
BOI
1h 55mnonstop
$182Alaska Airlines
Mon, Sep 28 - Tue, Oct 20
Alaska Airlines Logo
3:02 pm - 4:10 pm
BOI
-
ONT
2h 08mnonstop
Alaska Airlines Logo
4:42 pm - 7:42 pm
ONT
-
BOI
2h 00mnonstop
$187Alaska Airlines
Sat, Aug 29 - Sat, Sep 5
Alaska Airlines Logo
3:02 pm - 4:10 pm
BOI
-
ONT
2h 08mnonstop
Alaska Airlines Logo
4:50 pm - 7:45 pm
ONT
-
BOI
1h 55mnonstop
$190Alaska Airlines
Tue, Sep 29 - Tue, Oct 20
Delta Logo
6:00 am - 9:02 am
BOI
-
ONT
4h 02m
1 stop
Delta Logo
9:45 am - 5:50 pm
ONT
-
BOI
7h 05m
1 stop
$197Delta
Thu, Aug 27 - Sun, Aug 30
Alaska Airlines Logo
3:02 pm - 4:10 pm
BOI
-
ONT
2h 08mnonstop
Alaska Airlines Logo
4:50 pm - 7:45 pm
ONT
-
BOI
1h 55mnonstop
$198Alaska Airlines
Sat, Aug 22 - Sun, Aug 23
Alaska Airlines Logo
3:02 pm - 4:10 pm
BOI
-
ONT
2h 08mnonstop
Alaska Airlines Logo
4:50 pm - 7:45 pm
ONT
-
BOI
1h 55mnonstop
$199Alaska Airlines
Sat, Aug 22 - Sun, Aug 23
Delta Logo
5:15 pm - 10:23 pm
BOI
-
ONT
6h 08m
1 stop
Delta Logo
6:00 am - 12:14 pm
ONT
-
BOI
5h 14m
1 stop
$202Delta
Sat, Aug 22 - Sun, Aug 23
Delta Logo
5:15 pm - 10:23 pm
BOI
-
ONT
6h 08m
1 stop
Delta Logo
6:00 am - 12:14 pm
ONT
-
BOI
5h 14m
1 stop
$203Delta
Sat, Aug 22 - Sun, Aug 23
Alaska Airlines Logo
3:02 pm - 4:10 pm
BOI
-
ONT
2h 08mnonstop
Alaska Airlines Logo
4:50 pm - 7:45 pm
ONT
-
BOI
1h 55mnonstop
$204Alaska Airlines
Booking Insights

KAYAK's insights & trends for Boise to Ontario flights

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

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

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Boise to Ontario departing in September.

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

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

Your flight ticket price will generally be cheaper if you fly to Ontario on a Tuesday and more expensive on a Sunday. On your return trip to Boise, you should consider flying back on a Tuesday, and avoid Sundays for better deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boise to Ontario, 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 Boise to Ontario is January, where tickets cost $237 (return) on average. On the other hand, the most expensive months are March and June, where the average cost of round-trip tickets is $437 and $397 respectively.

Can I save money by flying with a layover from Boise to Ontario?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $287, prices are generally cheapest when you fly direct.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Boise to Ontario, 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 Boise to Ontario, you should book around 4 weeks before departure, which saves you about 51% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 20 weeks before departure.

Good to know

Low seasonDecember
Cheapest flight$94
Best time to beat the crowds but there is an average 15% increase in price.
Most popular time to fly and prices are also 3% lower on average.
Flight from Boise to Ontario

When to book flights from Boise to Ontario

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

  • What is the cheapest flight from Boise to Ontario?

    In the last 5 days, the lowest price for a flight from Boise to Ontario was $94 for a one-way ticket and $177 for a round-trip.

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

    A passport is not required to fly from Boise to Ontario.

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

    When flying out of Boise you will be using Boise Air Term. Gowen Fld. You will be landing at Ontario, also known as Ontario.

  • Which airlines offer Wi-Fi service onboard planes from Boise to Ontario?

    Only Alaska Airlines offers inflight Wi-Fi service on the Boise to Ontario flight route.

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

    The Embraer 175 is the aircraft model that flies most regularly on the Boise to Ontario flight route.

  • Which airline alliances offer flights from Boise to Ontario?

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

  • On which days can I fly direct from Boise to Ontario?

    There are nonstop flights from Boise to Ontario on a daily basis.

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

    The two airlines most popular with KAYAK users for flights from Boise to Ontario are Southwest and Alaska Airlines. With an average price for the route of $385 and an overall rating of 7.9, Southwest is the most popular choice. Alaska Airlines is also a great choice for the route, with an average price of $278 and an overall rating of 7.9.

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

    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 Boise to Ontario.

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

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

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

    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 Ontario from Boise 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 Boise to Ontario

  • Looking for a cheap flight? 25% of our users found flights on this route for $238 or less one-way and $197 or less round-trip.

Prefer to fly direct from Boise to Ontario?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Boise Air Term. Gowen Fld to Ontario.
Find which airlines fly direct from Boise Air Term. Gowen Fld Airport to Ontario Airport, which days they fly and book direct flights.

Direct departures

Boise Air Term. Gowen Fld to Ontario

Monday

Alaska Airlines

Alaska Airlines

Tuesday

Alaska Airlines

Alaska Airlines

Wednesday

Alaska Airlines

Alaska Airlines

Thursday

Alaska Airlines

Alaska Airlines

Friday

Alaska Airlines

Alaska Airlines

Saturday

Alaska Airlines

Alaska Airlines

Sunday

Alaska Airlines

Alaska Airlines

See more direct flights

Direct returns

Ontario to Boise Air Term. Gowen Fld

Monday

Alaska Airlines

Alaska Airlines

Tuesday

Alaska Airlines

Alaska Airlines

Wednesday

Alaska Airlines

Alaska Airlines

Thursday

Alaska Airlines

Alaska Airlines

Friday

Alaska Airlines

Alaska Airlines

Saturday

Alaska Airlines

Alaska Airlines

Sunday

Alaska Airlines

Alaska Airlines

See more direct flights

Reviews of the top 4 airlines serving from Boise to Ontario

 
See real verified KAYAK customer reviews for airlines flying from Boise to Ontario. 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 Boise to Ontario? 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.
7.9
Alaska AirlinesOverall score based on 12607 reviews
8.5Crew
8.1Boarding
7.8Comfort
7.0Entertainment
7.1Food
Airline reviews

I fell asleep and missed my flight and they rescheduled me no problem. Staff was professional and the plane was clean. I was very happy with my experience.

10.0 ExcellentAnonymous, Feb 2026
BOI - SFO
Read more Alaska Airlines reviews

I fell asleep and missed my flight and they rescheduled me no problem. Staff was professional and the plane was clean. I was very happy with my experience.

I enjoyed the Starlink access but didn't have much time to use it. It also kept dropping me so I gave up. The food was very good though when I asked for a different "dessert" they didn't have anything. Chocolate Brownie Cookies are not suitable for everyone...maybe children. The flight staff were amazing - at least in First Class! My first time ever! The trip from Boise to San Diego was FAR better than going to Boise.

Our late returning flight was annoying. The plane was small, but it made boarding and disembarking quicker. I do wish they offered a gluten free snack.

I was standing in line to use the restroom. A First Class passenger wanted to use the restroom after me, but Jaques made me wait on Flight 3418 from BOI to SJC on December 12, 2025. I felt this was inappropriate and rude.

Excellent, I traveled with my adult mom, she was happy for your service, especially, because you helped her with the reel chair. Only a little thing, in the airplane to Boise, the seat was very worn.

Everything was great, your crew is always very pleasant. Your airplanes are always so cold though.

It was a little chilly on the ride. The entertainment was the book I brought, and it was excellent.

Great service. My wheelchair was ready and waiting for me

The check in bag fee should have been disclosed when I booked my flight.

The absolute coldest flight I’ve ever been on, even with a sweater and zip up sweatshirt. Was miserable the entire flight.

The flight was late. The crew was rude. There was no food. Cramped and uncomfortable. Nothing about this flight was good.

It was just okay, no frills, basic transportation with no luxury. No screens on the seats, no water or drinks on a short flight. Full flight but at least it was on time.

The first time I flew in the extra legroom section. It was difficult to notice a difference. I had bad luck with my neighbors. The crew was okay. Southwest has reduced the live TV options.

No gluten free snacks. Seats felt worn or bare bones even though it was a new 737 MAX 8.

Plane was clean and comfortable. Flight attendants and gate staff were professional, friendly and efficient. Boarding and deplaning were orderly and efficient. All in all, the typical excellent Southwest experience.

Not having a five hour delay with little notice! The crew was very kind, though, and just as tired as we passengers were. The flight didn't depart until nearly 1 am...and no reason was ever given.

This leg was much better, but we did have to have a 3 hour lay o er after coming from a very exhausting hiccup with our flight from BNA to Den

The WiFi and crew on the plane were good, however, the boarding experience was awful. I paid for the Choice Preferred and was boarded in group 5 so all overhead storage was full. They found room for our luggage, but further back making getting off the plane a nightmare. Also, we were in row 6 and the seats were extremely uncomfortable. Both my daughter and I had no leg room and couldn’t wait to get off the plane.

Our flight to Oakland was great bc the plane was new but it was delayed by 15min not bad at all. Over all it was an 8/10

The flight in it self was good. The delays looking for pilots was unexpected.

Crew was real good, flight was smooth and came in early.

Love me some Delta. One of the few airlines to recognize and support veterans. Easy boarding, flight was on time and arrived early and the flight attendants were excellent on this flight.

We sat on the runway for over an hour before departure. That was unwelcome.

Flight delayed four separate times. I’m now one hour hours late to landing.

worst flight ever from Delta, it got delayed and kept on delaying..

Everything went smoothly, although the usual gripes about airline travel were still present: the boarding process is inefficient, the snack selection is limited, and so on. Since there was extra space on the flight, the gate agent rearranged many people's seats to put people on the aisles and windows, leaving the middle seats empty, as much as possible, which was pretty great.

While they turned off most cabin lights to allow people to sleep, I was bothered by how bright the side lights still were. It was still quite bright for me in a window seat, when I wish I could have slept!

One of the flight attendants was a little cranky. I appreciated the free wifi and plug to charge my laptop

WiFi didn’t work most of the time. The usb chargers would work only occasionally for 5 mins and wouldn’t charge after that. Had to keep trying repeatedly at each of the seats in the row.

I specifically picked out right side aisle seats because my left knee sometimes needs to be stretched. But my experience this trip was that the seats were shuffled and I lost those assigned seats, resulting in me having to sit in a much less desirable position for my comfort.

Know that the movies that you are going to be offered are the oldest be rated movies they could possibly get. They may have one or two new movies that they keep advertising but when you’re flying 15 hours, there is nothing to see past the first new movie.

This was an overnight flight, and in the morning they did know coffee service. How you can throw passengers in a San Francisco airport at 5:40 a.m. in the morning and not giving them Coffee is a crime.

Our flight was delayed several Times due to mechanical issues. Although I understand this may happen at times, it was very inconvenient and we had to book a hotel for an overnight stay. We were traveling with my 3-yo grandson and waiting at the airport from noon until 6:30pm with no reassurance that our next rescheduled flight would depart, we had to decide what’s best for him. A day later, I found out that I may be able to demand compensation if my flight is delayed more than 4 hours. I will hav to read the fine print next time.

Service was professional and quick. Premium economy seat was comfortable given the class

Like: departed and arrived on time. Unlike: Food options for purchase allways bad, 1 of 2 of the crew members not very friendly at all. Seats and leg room aweful. At this point I am thinking on switching to AA.

The staff was extremely helpful and friendly at all times! They went above and beyond to get us into an earlier flight in San Diego to make our connection in SFO possible, because our original flight did actually not make it! I did so much appreciate the UA team and how they made this possible. We also didn’t have seats together on the long flight to Singapore, but they found us seats together last moment with no additional cost! Nobody sat next to us, so that we were able to sleep! Thanks to UA for improving their service and Underpricer for booking this trip! Please be careful: 1,5 hrs for transfer in San Francisco might not be enough time in the future

Delayed - weather wasn't bad at either end. Also sat on tarmac in ORD.

During landing. 2 crew members passed 3 times by my lane and didn't notice that people in front of us had their site to the furthermore reclined... That was uncomfortable and could have been dangerous.

United Airlines was fantastic, however, UnderPricer was a nightmare. I got to the airport 4 hours before my flight. We are moving to New Zealand so had quite a bit of baggage (16 checked items) and so wanted to have plenty of time to get everything taken care of properly. When I went to check in they (United) could only find a ticket for me. The 5 tickets for my children were never officially ticketed. I called Underpricer and they told me it was United's fault and United told me that Underpricer just needs to reissue the tickets, but they refused to. I asked the Underpricer agent to transfer me to his supervisor as I was not getting the help I needed. He told me the supervisor was busy but that he would call me back in 30 minutes. 30 minutes came and went with no phone call. After an hour I called Underpricer back but they would not let me talk to the person I had talked to before, just told me that he was talking with the supervisor and technical support. I called again an hour later, was told the same thing. I tried again later, with only about 30 minutes until my flight was scheduled to leave (meaning I had been at the airport for more than 3 hours with my 5 children trying to get ticketed and board the flight). Also, my husband had moved to New Zealand 3 months prior, I haven't seen him in 3 months, my children hadn't seen their dad in 3 months, we were all extremely eager to get on that flight and get to New Zealand. The situation with the tickets did not get resolved until after it was too late to check our luggage and board our flight. We were devastated. My 11 year old son was in tears at not being able to be on his way to see his dad. Thankfully we were rebooked for the next evening, but that night it felt devastating. We'd been at the airport for 4 hours waiting. My in-laws waited with me and then helped me reload all our baggage and took us home to stay with them for the night. On the newly booked flights we could not sit together - my children were spread throughout the plane. So, even though I had paid extra to select our seats after buying my seats from Underpricer only two of us were able to sit together (thankful that my 11 year old wasn't all by himself, but not happy that my 14 & 16 year old daughters were seated by strangers). I really feel that Underpricer should refund me what I paid for the seating ($120 USD). It was a very frustrating situation and I plan on never using Kayak or Underpricer ever again.

Airline did not explain reasons why flight was delayed two hours. Explanations were badly needed and rarely provided. Problem seemed to clearly be the airline’s fault and not the fault of the weather or airport.

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

Information on your arrival and departure airports