Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Ontario to Boise from $99

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Boise departing on 10/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Ontario to Boise

Cheap round-trip flights

Frontier Logo
8:59 pm - 11:37 amONT-BOI
13h 38m1 stop
Frontier Logo
12:22 pm - 7:53 amBOI-ONT
20h 31m1 stop
$153Frontier
Find Deal
Thu, Oct 2 - Sun, Oct 5
Southwest Logo
4:55 pm - 11:05 pmONT-BOI
5h 10m1 stop
Southwest Logo
11:40 am - 5:00 pmBOI-ONT
6h 20m1 stop
$164Southwest
Find Deal
Sat, Oct 4 - Wed, Oct 8
Logo
10:28 pm - 1:21 pmONT-BOI
13h 53m1 stop
Logo
9:26 pm - 9:56 pmBOI-ONT
25h 30m1 stop
$190
Find Deal
Fri, Sep 26 - Mon, Sep 29
Alaska Airlines Logo
7:43 pm - 9:35 amONT-BOI
12h 52m1 stop
Alaska Airlines Logo
6:30 am - 12:37 pmBOI-ONT
7h 07m1 stop
$216Alaska Airlines
Find Deal
Wed, Oct 15 - Wed, Oct 22
Delta Logo
11:48 am - 6:51 pmONT-BOI
6h 03m1 stop
Delta Logo
5:25 am - 11:08 amBOI-ONT
6h 43m1 stop
$217Delta
Find Deal
Sat, Oct 11 - Sat, Oct 18
American Airlines Logo
6:11 am - 1:46 pmONT-BOI
6h 35m1 stop
American Airlines Logo
6:37 am - 4:01 pmBOI-ONT
10h 24m1 stop
$230American Airlines
Find Deal
Tue, Nov 11 - Thu, Nov 13
Delta Logo
5:50 pm - 12:08 amONT-BOI
5h 18m1 stop
Delta Logo
4:46 pm - 10:41 pmBOI-ONT
6h 55m1 stop
$232Delta
Find Deal
Tue, Oct 14 - Tue, Oct 21
Alaska Airlines Logo
5:45 pm - 11:57 pmONT-BOI
5h 12m1 stop
Alaska Airlines Logo
5:38 pm - 12:03 amBOI-ONT
7h 25m1 stop
$236Alaska Airlines
Find Deal
Wed, Oct 8 - Sat, Oct 11
American Airlines Logo
4:47 pm - 1:46 pmONT-BOI
19h 59m1 stop
American Airlines Logo
6:37 am - 4:01 pmBOI-ONT
10h 24m1 stop
$243American Airlines
Find Deal
Mon, Nov 3 - Thu, Nov 6
United Airlines Logo
5:05 am - 1:33 pmONT-BOI
7h 28m1 stop
United Airlines Logo
7:05 pm - 10:52 pmBOI-ONT
4h 47m1 stop
$307United Airlines
Find Deal
Tue, Oct 7 - Thu, Oct 9

Frontier flights from Ontario to Boise

Our best Frontier deals on Ontario to Boise flight tickets
Frontier
Oct 2
ONT8:59 pmOntario
13h 38m
1 stop
BOI11:37 amBoise Air Term. Gowen Fld
Oct 5
BOI12:22 pmBoise Air Term. Gowen Fld
20h 31m
1 stop
ONT7:53 amOntario
$153
Find similar
Frontier
Oct 15
ONT6:53 amOntario
27h 50m
1 stop
BOI11:43 amBoise Air Term. Gowen Fld
Oct 19
BOI12:28 pmBoise Air Term. Gowen Fld
20h 19m
2 stops
ONT7:47 amOntario
$240
Find similar
Frontier
Oct 8
ONT6:53 amOntario
27h 50m
1 stop
BOI11:43 amBoise Air Term. Gowen Fld
Oct 10
BOI12:28 pmBoise Air Term. Gowen Fld
20h 21m
2 stops
ONT7:49 amOntario
$248
Find similar

Hawaiian Airlines flights from Ontario to Boise

Our best Hawaiian Airlines deals on Ontario to Boise flight tickets
Hawaiian Airlines
Oct 15
ONT6:00 amOntario
6h 10m
1 stop
BOI1:10 pmBoise Air Term. Gowen Fld
Oct 22
BOI5:38 pmBoise Air Term. Gowen Fld
7h 25m
1 stop
ONT12:03 amOntario
$226
Find similar
Hawaiian Airlines
Oct 18
ONT5:45 pmOntario
5h 12m
1 stop
BOI11:57 pmBoise Air Term. Gowen Fld
Oct 21
BOI5:38 pmBoise Air Term. Gowen Fld
7h 25m
1 stop
ONT12:03 amOntario
$269
Find similar
Hawaiian Airlines
Oct 8
ONT5:45 pmOntario
5h 12m
1 stop
BOI11:57 pmBoise Air Term. Gowen Fld
Oct 13
BOI8:29 pmBoise Air Term. Gowen Fld
4h 22m
1 stop
ONT11:51 pmOntario
$340
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Ontario to Boise that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated September 15, 2025.
Use the filters below to find and compare flights from Ontario to Boise that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Thu 10/2

8:59 pm-11:37 am

1 stop13h 38m

Boise Air Term. Gowen Fld

Sun 10/5

12:22 pm-7:53 am

1 stop20h 31m

$153

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Sat 10/4

4:55 pm-11:05 pm

1 stop5h 10m

Boise Air Term. Gowen Fld

Wed 10/8

11:40 am-5:00 pm

1 stop6h 20m

$164

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Fri 9/26

10:28 pm-1:21 pm

1 stop13h 53m

Boise Air Term. Gowen Fld

Mon 9/29

9:26 pm-9:56 pm

1 stop25h 30m

$190

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Wed 10/15

7:43 pm-9:35 am

1 stop12h 52m

Boise Air Term. Gowen Fld

Wed 10/22

6:30 am-12:37 pm

1 stop7h 07m

$216

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Sat 10/11

11:48 am-6:51 pm

1 stop6h 03m

Boise Air Term. Gowen Fld

Sat 10/18

5:25 am-11:08 am

1 stop6h 43m

$217

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Tue 11/11

6:11 am-1:46 pm

1 stop6h 35m

Boise Air Term. Gowen Fld

Thu 11/13

6:37 am-4:01 pm

1 stop10h 24m

$230

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Tue 10/14

5:50 pm-12:08 am

1 stop5h 18m

Boise Air Term. Gowen Fld

Tue 10/21

4:46 pm-10:41 pm

1 stop6h 55m

$232

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Wed 10/8

5:45 pm-11:57 pm

1 stop5h 12m

Boise Air Term. Gowen Fld

Sat 10/11

5:38 pm-12:03 am

1 stop7h 25m

$236

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Mon 11/3

4:47 pm-1:46 pm

1 stop19h 59m

Boise Air Term. Gowen Fld

Thu 11/6

6:37 am-4:01 pm

1 stop10h 24m

$243

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Tue 10/7

5:05 am-1:33 pm

1 stop7h 28m

Boise Air Term. Gowen Fld

Thu 10/9

7:05 pm-10:52 pm

1 stop4h 47m

$307

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Boise from

How to get the cheapest flight ticket from Ontario to Boise

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Boise?

The month of January is, on average, the cheapest month to fly to Boise from Ontario, with most prices found around $240. If you aren’t able to travel during the month of January, then book flights to Boise from Ontario during September instead. Flights to Boise in September, while not as cheap as those in January, still average around $271.

What is the cheapest day to depart on your flight to Boise?

Our data shows that Saturday is the least expensive day to fly to Boise. Tickets to fly out on this day can be as low as $264. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $321. These prices are subject to change though, so be sure to set up a Price Alert for flights to Boise.

What is the cheapest time of day to depart on your flight to Boise?

Our data shows that the cheapest Ontario to Boise flights are usually those with departure times at noon. Our users have found flights to Boise at noon for as low as $177. In the morning is when there is more demand to fly to Boise, so prices are often more expensive at around $296 per ticket.

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

You are more likely to see cheaper flights to Boise from Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Boise for around $315 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Boise from Ontario for as low as $199 on momondo.

How have Ontario to Boise flight prices changed over time?

As of September 2025, prices for Ontario to Boise flights are approximately 19% more expensive when compared to flights at the same time last year.

When to book flights from Ontario to Boise

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Boise according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Ontario to Boise (ONT to BOI) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Boise

Best Price Found

$157

Fastest flight time

2h 17m

Direct flights

Tue, Thu, Fri and Sat

Airports in Boise

1 airport
The best flight deal from Ontario to Boise found on momondo in the last 72 hours is $157
The fastest flight from Ontario to Boise takes 2h 17m
Direct flights go from Ontario to Boise on Tuesday, Thursday, Friday and Saturday. There are no airlines offering direct flights.
There is 1 airport near Boise: Boise Air Term. Gowen Fld (BOI)
Search flight deals

  • How far is Ontario to Boise Air Term. Gowen Fld by plane?

    A flight from Ontario to Boise Air Term. Gowen Fld will travel around 663.9 mi. A reasonable flight in good conditions will take 3h 35m.

  • When did momondo last update prices for flights from Ontario Airport to Boise Air Term. Gowen Fld Airport?

    Prices for flights from Ontario Airport to Boise Air Term. Gowen Fld Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Ontario Airport to Boise Air Term. Gowen Fld Airport?

  • How old do you have to be to fly from Ontario Airport to Boise Air Term. Gowen Fld Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Boise Air Term. Gowen Fld Airport.

  • What documentation or ID do you need to fly to Boise Air Term. Gowen Fld Airport?

    The required travel and health documents for your Boise Air Term. Gowen Fld Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Boise Air Term. Gowen Fld Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Ontario to Boise?

  • What is the most popular airline from Ontario to Boise?

Best airlines flying from Ontario to Boise

Compare and see reviews for airlines that fly from Ontario to Boise with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $169Free CancellationRating
7.9
7,954 reviews
Search Delta flights
Alaska AirlinesPriceFrom $178Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
American AirlinesPriceFrom $218Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $234Free CancellationRating
7.4
8,929 reviews
Search United Airlines flights
SouthwestPriceFrom $238Free CancellationRating
8.0
4,242 reviews
Search Southwest flights

Traveling to a place near Boise?

Book flights to Boise if you plan to visit one of these locations
Nampa
Meridian
McCall
Caldwell
Ontario
Eagle

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Boise?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Ontario to Boise for you.

Can I find flights from Ontario to Boise with flexible booking policies on momondo?

Flights from Ontario to Boise with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Ontario to Boise?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Boise from Ontario.

I’m not ready to book a flight from Ontario to Boise right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Ontario to Boise flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Boise trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Wed 10/15
Wed 10/22
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States