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Cheap flights from Ontario to Boise from $76

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 2/18. 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.
Alaska Airlines Logo
7:59 pm - 10:58 pm
ONT
-
BOI
1h 59mnonstop
Alaska Airlines Logo
5:50 pm - 6:57 pm
BOI
-
ONT
2h 07mnonstop
$117Alaska Airlines
Tue, Feb 24 - Sat, Feb 28
Alaska Airlines Logo
7:37 pm - 10:36 pm
ONT
-
BOI
1h 59mnonstop
Alaska Airlines Logo
6:07 pm - 7:14 pm
BOI
-
ONT
2h 07mnonstop
$137Alaska Airlines
Sat, Feb 28 - Tue, Mar 3
Alaska Airlines Logo
7:59 pm - 10:58 pm
ONT
-
BOI
1h 59mnonstop
Alaska Airlines Logo
5:50 pm - 6:57 pm
BOI
-
ONT
2h 07mnonstop
$147Alaska Airlines
Wed, Feb 18 - Mon, Feb 23
Alaska Airlines Logo
7:37 pm - 10:36 pm
ONT
-
BOI
1h 59mnonstop
Alaska Airlines Logo
5:50 pm - 6:57 pm
BOI
-
ONT
2h 07mnonstop
$157Alaska Airlines
Thu, Feb 19 - Sat, Feb 21
Alaska Airlines Logo
6:14 am - 3:08 pm
ONT
-
BOI
7h 54m
1 stop
Alaska Airlines Logo
5:50 pm - 6:57 pm
BOI
-
ONT
2h 07mnonstop
$158Alaska Airlines
Tue, Feb 24 - Sat, Feb 28
Delta Logo
5:05 pm - 11:57 pm
ONT
-
BOI
5h 52m
1 stop
Delta Logo
11:35 am - 4:14 pm
BOI
-
ONT
5h 39m
1 stop
$162Delta
Fri, May 1 - Sat, May 16
Alaska Airlines Logo
7:37 pm - 10:36 pm
ONT
-
BOI
1h 59mnonstop
Alaska Airlines Logo
6:28 am - 11:08 am
BOI
-
ONT
5h 40m
1 stop
$167Alaska Airlines
Sat, Feb 28 - Tue, Mar 3
Multiple Airlines Logo
7:30 am - 11:51 am
ONT
-
BOI
27h 21m
1 stop
Multiple Airlines Logo
8:20 pm - 11:52 pm
BOI
-
ONT
4h 32m
1 stop
$168Multiple Airlines
Wed, Feb 18 - Mon, Feb 23
Alaska Airlines Logo
6:14 am - 2:58 pm
ONT
-
BOI
7h 44m
1 stop
Alaska Airlines Logo
6:00 pm - 10:44 pm
BOI
-
ONT
5h 44m
1 stop
$171Alaska Airlines
Wed, Feb 25 - Wed, Feb 25
Alaska Airlines Logo
7:37 pm - 10:36 pm
ONT
-
BOI
1h 59mnonstop
Alaska Airlines Logo
5:50 pm - 6:57 pm
BOI
-
ONT
2h 07mnonstop
$177Alaska Airlines
Fri, Feb 27 - Mon, Mar 2

Frontier flights from Ontario to Boise

Our best Frontier deals on Ontario to Boise flight tickets
Frontier
May 6
ONT12:59 amOntario
9h 09m
1 stop
BOI11:08 amBoise Air Term. Gowen Fld
May 10
BOI11:53 amBoise Air Term. Gowen Fld
20h 38m
1 stop
ONT7:31 amOntario
$226
Frontier
Apr 25
ONT12:59 amOntario
9h 09m
1 stop
BOI11:08 amBoise Air Term. Gowen Fld
May 3
BOI11:53 amBoise Air Term. Gowen Fld
20h 38m
1 stop
ONT7:31 amOntario
$261
Frontier
Feb 12
ONT6:05 amOntario
28h 06m
1 stop
BOI11:11 amBoise Air Term. Gowen Fld
Feb 15
BOI11:56 amBoise Air Term. Gowen Fld
13h 03m
1 stop
ONT11:59 pmOntario
$271

United Airlines flights from Ontario to Boise

Our best United Airlines deals on Ontario to Boise flight tickets
United Airlines
Mar 10
ONT1:50 pmOntario
6h 39m
1 stop
BOI9:29 pmBoise Air Term. Gowen Fld
Mar 16
BOI12:59 pmBoise Air Term. Gowen Fld
5h 42m
1 stop
ONT5:41 pmOntario
$245
United Airlines
Jan 30
ONT6:39 pmOntario
4h 09m
1 stop
BOI11:48 pmBoise Air Term. Gowen Fld
Feb 1
BOI7:05 pmBoise Air Term. Gowen Fld
4h 48m
1 stop
ONT10:53 pmOntario
$443
United Airlines
Jan 30
ONT6:39 pmOntario
4h 09m
1 stop
BOI11:48 pmBoise Air Term. Gowen Fld
Feb 10
BOI2:20 pmBoise Air Term. Gowen Fld
4h 23m
1 stop
ONT5:43 pmOntario
$470

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 January 28, 2026.
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

Tue 2/24

7:59 pm-10:58 pm

Nonstop1h 59m

Boise Air Term. Gowen Fld

Sat 2/28

5:50 pm-6:57 pm

Nonstop2h 07m

$117

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Sat 2/28

7:37 pm-10:36 pm

Nonstop1h 59m

Boise Air Term. Gowen Fld

Tue 3/3

6:07 pm-7:14 pm

Nonstop2h 07m

$137

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Wed 2/18

7:59 pm-10:58 pm

Nonstop1h 59m

Boise Air Term. Gowen Fld

Mon 2/23

5:50 pm-6:57 pm

Nonstop2h 07m

$147

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Thu 2/19

7:37 pm-10:36 pm

Nonstop1h 59m

Boise Air Term. Gowen Fld

Sat 2/21

5:50 pm-6:57 pm

Nonstop2h 07m

$157

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Tue 2/24

6:14 am-3:08 pm

1 stop7h 54m

Boise Air Term. Gowen Fld

Sat 2/28

5:50 pm-6:57 pm

Nonstop2h 07m

$158

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Fri 5/1

5:05 pm-11:57 pm

1 stop5h 52m

Boise Air Term. Gowen Fld

Sat 5/16

11:35 am-4:14 pm

1 stop5h 39m

$162

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Sat 2/28

7:37 pm-10:36 pm

Nonstop1h 59m

Boise Air Term. Gowen Fld

Tue 3/3

6:28 am-11:08 am

1 stop5h 40m

$167

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Wed 2/18

7:30 am-11:51 am

1 stop27h 21m

Boise Air Term. Gowen Fld

Mon 2/23

8:20 pm-11:52 pm

1 stop4h 32m

$168

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Wed 2/25

6:14 am-2:58 pm

1 stop7h 44m

Boise Air Term. Gowen Fld

Wed 2/25

6:00 pm-10:44 pm

1 stop5h 44m

$171

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Fri 2/27

7:37 pm-10:36 pm

Nonstop1h 59m

Boise Air Term. Gowen Fld

Mon 3/2

5:50 pm-6:57 pm

Nonstop2h 07m

$177

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 January is, on average, the cheapest month to fly to Boise from Ontario, with most prices found around $181. 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 $243.

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 $259. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $334. 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 in the afternoon. Our users have found flights to Boise in the afternoon for as low as $237. In the morning is when there is more demand to fly to Boise, so prices are often more expensive at around $295 per ticket.

What is the cheapest Ontario to Boise Air Term. Gowen Fld flight route?

Fly from Ontario to Boise Air Term. Gowen Fld for the best Ontario - Boise Air Term. Gowen Fld flight prices

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 $310 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 $185 on momondo.

What cabin class options are available on Ontario to Boise Air Term. Gowen Fld flights?

There is only 1 cabin class available to choose from on Ontario to Boise Air Term. Gowen Fld flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Ontario to Boise flights?

No. A direct flight is the cheapest option for a flight between Ontario to Boise.

How have Ontario to Boise flight prices changed over time?

As of January 2026, prices for Ontario to Boise flights are approximately 33% cheaper 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

$108

Fastest flight time

1h 55m

Direct flights

Every day

Airports in Boise

1 airport
The best one-way flight to Boise from Ontario in the past 72 hours is $108. The best round-trip flight deal from Ontario to Boise found on momondo in the last 72 hours is $157.
The fastest flight from Ontario to Boise takes 1h 55m
Direct flights go from Ontario to Boise every day.
There is 1 airport in Boise. From Ontario there are direct flights to 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 1h 55m.

  • 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
Alaska AirlinesPriceFrom $137Free CancellationRating
8.0
11,799 reviews
Search Alaska Airlines flights
DeltaPriceFrom $158Free CancellationRating
7.9
8,120 reviews
Search Delta flights
United AirlinesPriceFrom $196Free CancellationRating
7.4
9,206 reviews
Search United Airlines flights
SouthwestPriceFrom $220Free CancellationRating
8.0
4,268 reviews
Search Southwest flights
American AirlinesPriceFrom $227Free CancellationRating
7.2
11,198 reviews
Search American Airlines flights

  • Alaska Airlines Flights From Ontario to Boise

    Across 6 Alaska Airlines flights from Ontario to Boise this week, the average price was $244, with the best Alaska Airlines deals starting from $137 round-trip. 11,799 users have rated Alaska Airlines on momondo, with an average score of 8.0/10.

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.

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