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Cheap flights from Ontario to Boise from $65

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 12/6. 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

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Find the cheapest flights from Ontario to Boise

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
12:04 pm - 11:49 amONT-BOI
22h 45m1 stop
Frontier Logo
12:44 pm - 2:25 pmBOI-ONT
26h 41m1 stop
$136Frontier
Find Deal
Thu, Dec 4 - Sun, Dec 7
Delta Logo
4:49 pm - 12:42 amONT-BOI
6h 53m1 stop
Delta Logo
11:10 am - 4:09 pmBOI-ONT
5h 59m1 stop
$147Delta
Find Deal
Wed, Dec 10 - Tue, Dec 16
Frontier Logo
8:45 am - 11:43 amONT-BOI
25h 58m1 stop
Frontier Logo
12:28 pm - 11:50 pmBOI-ONT
12h 22m1 stop
$152Frontier
Find Deal
Wed, Nov 12 - Sun, Nov 16
Alaska Airlines Logo
7:56 pm - 10:57 pmONT-BOI
2h 01mnonstop
Alaska Airlines Logo
6:09 pm - 7:16 pmBOI-ONT
2h 07mnonstop
$157Alaska Airlines
Find Deal
Wed, Feb 4 - Mon, Feb 9
Multiple Airlines Logo
6:15 am - 3:44 pmONT-BOI
8h 29m1 stop
Multiple Airlines Logo
12:44 pm - 2:25 pmBOI-ONT
26h 41m1 stop
$160Multiple Airlines
Find Deal
Fri, Dec 5 - Sun, Dec 7
Southwest Logo
5:35 pm - 10:15 pmONT-BOI
3h 40m1 stop
Southwest Logo
7:35 am - 10:35 amBOI-ONT
4h 00m1 stop
$169Southwest
Find Deal
Thu, Jan 8 - Sat, Jan 10
Alaska Airlines Logo
6:22 pm - 9:39 pmONT-BOI
2h 17mnonstop
Alaska Airlines Logo
4:30 pm - 5:42 pmBOI-ONT
2h 12mnonstop
$175Alaska Airlines
Find Deal
Tue, Feb 24 - Wed, Feb 25
Southwest Logo
8:40 am - 4:50 pmONT-BOI
7h 10m2 stops
Southwest Logo
2:30 pm - 8:00 pmBOI-ONT
6h 30m1 stop
$214Southwest
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Wed, Dec 10 - Tue, Dec 16
United Airlines Logo
1:45 pm - 6:54 pmONT-BOI
4h 09m1 stop
United Airlines Logo
7:00 pm - 10:51 pmBOI-ONT
4h 51m1 stop
$232United Airlines
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Wed, Nov 19 - Sat, Nov 22
Multiple Airlines Logo
10:12 pm - 11:49 amONT-BOI
36h 37m2 stops
Multiple Airlines Logo
10:41 pm - 9:17 pmBOI-ONT
23h 36m1 stop
$236Multiple Airlines
Find Deal
Fri, Dec 5 - Fri, Dec 12

Frontier flights from Ontario to Boise

Our best Frontier deals on Ontario to Boise flight tickets
Frontier
Dec 4
ONT12:04 pmOntario
22h 45m
1 stop
BOI11:49 amBoise Air Term. Gowen Fld
Dec 7
BOI12:44 pmBoise Air Term. Gowen Fld
26h 41m
1 stop
ONT2:25 pmOntario
$136
Find similar
Frontier
Nov 12
ONT8:45 amOntario
25h 58m
1 stop
BOI11:43 amBoise Air Term. Gowen Fld
Nov 16
BOI12:28 pmBoise Air Term. Gowen Fld
12h 22m
1 stop
ONT11:50 pmOntario
$152
Find similar
Frontier
Dec 11
ONT12:04 pmOntario
22h 45m
1 stop
BOI11:49 amBoise Air Term. Gowen Fld
Dec 14
BOI12:44 pmBoise Air Term. Gowen Fld
26h 41m
1 stop
ONT2:25 pmOntario
$153
Find similar

Delta flights from Ontario to Boise

Our best Delta deals on Ontario to Boise flight tickets
Delta
Dec 10
ONT4:49 pmOntario
6h 53m
1 stop
BOI12:42 amBoise Air Term. Gowen Fld
Dec 16
BOI11:10 amBoise Air Term. Gowen Fld
5h 59m
1 stop
ONT4:09 pmOntario
$147
Find similar
Delta
Dec 3
ONT6:40 amOntario
5h 34m
1 stop
BOI1:14 pmBoise Air Term. Gowen Fld
Dec 7
BOI8:45 amBoise Air Term. Gowen Fld
4h 49m
1 stop
ONT12:34 pmOntario
$167
Find similar
Delta
Dec 4
ONT6:40 amOntario
5h 34m
1 stop
BOI1:14 pmBoise Air Term. Gowen Fld
Dec 7
BOI5:20 amBoise Air Term. Gowen Fld
6h 53m
1 stop
ONT11:13 amOntario
$187
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 October 30, 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 12/4

12:04 pm-11:49 am

1 stop22h 45m

Boise Air Term. Gowen Fld

Sun 12/7

12:44 pm-2:25 pm

1 stop26h 41m

$136

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Wed 12/10

4:49 pm-12:42 am

1 stop6h 53m

Boise Air Term. Gowen Fld

Tue 12/16

11:10 am-4:09 pm

1 stop5h 59m

$147

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Wed 11/12

8:45 am-11:43 am

1 stop25h 58m

Boise Air Term. Gowen Fld

Sun 11/16

12:28 pm-11:50 pm

1 stop12h 22m

$152

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Wed 2/4

7:56 pm-10:57 pm

Nonstop2h 01m

Boise Air Term. Gowen Fld

Mon 2/9

6:09 pm-7:16 pm

Nonstop2h 07m

$157

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Fri 12/5

6:15 am-3:44 pm

1 stop8h 29m

Boise Air Term. Gowen Fld

Sun 12/7

12:44 pm-2:25 pm

1 stop26h 41m

$160

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Thu 1/8

5:35 pm-10:15 pm

1 stop3h 40m

Boise Air Term. Gowen Fld

Sat 1/10

7:35 am-10:35 am

1 stop4h 00m

$169

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Tue 2/24

6:22 pm-9:39 pm

Nonstop2h 17m

Boise Air Term. Gowen Fld

Wed 2/25

4:30 pm-5:42 pm

Nonstop2h 12m

$175

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Wed 12/10

8:40 am-4:50 pm

2 stops7h 10m

Boise Air Term. Gowen Fld

Tue 12/16

2:30 pm-8:00 pm

1 stop6h 30m

$214

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Wed 11/19

1:45 pm-6:54 pm

1 stop4h 09m

Boise Air Term. Gowen Fld

Sat 11/22

7:00 pm-10:51 pm

1 stop4h 51m

$232

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Fri 12/5

10:12 pm-11:49 am

2 stops36h 37m

Boise Air Term. Gowen Fld

Fri 12/12

10:41 pm-9:17 pm

1 stop23h 36m

$236

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 September is, on average, the cheapest month to fly to Boise from Ontario, with most prices found around $245. If you aren’t able to travel during the month of September, then book flights to Boise from Ontario during January instead. Flights to Boise in January, while not as cheap as those in September, still average around $247.

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 $280. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $365. 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 afternoon is when there is more demand to fly to Boise, so prices are often more expensive at around $303 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 $320 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 October 2025, prices for Ontario to Boise flights are approximately 65% 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 01m

Direct flights

Every day

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 01m
Direct flights go from Ontario to Boise every day.
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 2h 01m.

  • 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 $158Free CancellationRating
7.9
7,998 reviews
Search Delta flights
Alaska AirlinesPriceFrom $178Free CancellationRating
8.0
11,217 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $196Free CancellationRating
7.4
8,998 reviews
Search United Airlines flights
American AirlinesPriceFrom $218Free CancellationRating
7.2
11,035 reviews
Search American Airlines flights
SouthwestPriceFrom $234Free CancellationRating
8.0
4,243 reviews
Search Southwest flights

Traveling to a place near Boise?

Book flights to Boise if you plan to visit one of these locations
Nampa
McCall
Meridian
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.

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