How long does it take to fly to Ontario?

Average flight duration from Idaho to Ontario depends on which airport you fly into and out of. Flying from Boise to Los Angeles is 2h 15m on average, while flying from Hailey to Los Angeles is 2h 34m on average. Los Angeles is the most popular airport in Ontario.

What airlines fly to Ontario?

Alaska Airlines, Delta and Allegiant Air are the top three most popular airlines that fly to Ontario from Idaho according to our data. Alaska Airlines is the first choice among our users, with 32% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 8 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Idaho to Ontario?

Frontier, Alaska Airlines, and Delta are the most popular carriers operating from Idaho to Ontario

When did momondo last update prices for flights from Idaho to Ontario Airport?

Prices for flights from Idaho to Ontario Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Idaho to Ontario Airport?

As of December 2025, there are 4 operators available to choose from for flights from Idaho to Ontario Airport.

How old do you have to be to fly from Idaho to Ontario Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Idaho to Ontario Airport.

What documentation or ID do you need to fly to Ontario Airport?

The travel and health documents required for your trip to Ontario Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ontario Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$79 Cheap Flights from Idaho to Ontario in 2025/26

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Find the cheapest flights from Idaho to Los Angeles

Round-trip

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Cheap round-trip flights

Enter your travel dates to find the best prices.

6:09 pm - 7:16 pm

BOI

ONT

2h 07mnonstop

7:59 pm - 10:58 pm

ONT

BOI

1h 59mnonstop

$137Alaska Airlines

Sat, Feb 7 - Tue, Feb 24

6:09 pm - 7:16 pm

BOI

ONT

2h 07mnonstop

7:59 pm - 10:58 pm

ONT

BOI

1h 59mnonstop

$157Alaska Airlines

Fri, Feb 6 - Wed, Feb 25

9:10 am - 1:06 pm

BOI

ONT

4h 56m1 stop

6:00 am - 12:51 pm

ONT

BOI

5h 51m1 stop

$165Hawaiian Airlines

Sat, Jan 24 - Mon, Jan 26

4:40 pm - 5:45 pm

BOI

ONT

2h 05mnonstop

6:25 pm - 9:26 pm

ONT

BOI

2h 01mnonstop

$167Alaska Airlines

Sun, Mar 22 - Sat, Mar 28

12:07 pm - 12:20 am

BOI

ONT

13h 13m1 stop

6:20 am - 11:12 am

ONT

BOI

27h 52m1 stop

$170Frontier

Fri, Jan 23 - Thu, Jan 29

4:04 pm - 8:10 pm

BOI

ONT

5h 06m1 stop

7:56 pm - 10:57 pm

ONT

BOI

2h 01mnonstop

$183Multiple Airlines

Sat, Jan 24 - Mon, Jan 26

12:46 pm - 5:03 pm

BOI

ONT

5h 17m1 stop

6:05 am - 11:11 am

ONT

BOI

28h 06m1 stop

$185Multiple Airlines

Thu, Feb 5 - Thu, Feb 12

12:22 pm - 11:59 pm

GEG

ONT

11h 37m1 stop

6:10 am - 12:14 pm

ONT

GEG

6h 04m1 stop

$197Frontier

Thu, Feb 26 - Sun, Mar 1

6:05 am - 1:56 pm

GEG

ONT

7h 51m1 stop

7:30 am - 12:37 pm

ONT

GEG

5h 07m1 stop

$207Delta

Wed, Jan 21 - Sat, Jan 24

5:20 am - 10:51 pm

GEG

ONT

17h 31m1 stop

7:30 am - 12:37 pm

ONT

GEG

5h 07m1 stop

$208Delta

Sat, Jan 24 - Mon, Jan 26

Alaska Airlines flights from Idaho to Ontario

Our best Alaska Airlines deals on Idaho to Ontario flight tickets

Alaska Airlines

Apr 8

BOI4:40 pmBoise Air Term. Gowen Fld

2h 05m

ONT5:45 pmOntario

Apr 15

ONT6:25 pmOntario

2h 01m

BOI9:26 pmBoise Air Term. Gowen Fld

$136

Find similar

Alaska Airlines

Feb 7

BOI6:09 pmBoise Air Term. Gowen Fld

2h 07m

ONT7:16 pmOntario

Feb 24

ONT7:59 pmOntario

1h 59m

BOI10:58 pmBoise Air Term. Gowen Fld

$137

Find similar

Alaska Airlines

Apr 7

BOI4:40 pmBoise Air Term. Gowen Fld

2h 05m

ONT5:45 pmOntario

Apr 13

ONT6:25 pmOntario

2h 01m

BOI9:26 pmBoise Air Term. Gowen Fld

$157

Find similar

Southwest flights from Idaho to Ontario

Our best Southwest deals on Idaho to Ontario flight tickets

Southwest

Feb 16

BOI6:00 amBoise Air Term. Gowen Fld

4h 25m

1 stop

ONT9:25 amOntario

Feb 19

ONT6:50 amOntario

5h 25m

1 stop

BOI1:15 pmBoise Air Term. Gowen Fld

$228

Find similar

Southwest

Feb 27

BOI7:00 amBoise Air Term. Gowen Fld

5h 10m

1 stop

ONT11:10 amOntario

Mar 2

ONT4:40 pmOntario

6h 00m

2 stops

BOI11:40 pmBoise Air Term. Gowen Fld

$233

Find similar

Southwest

Feb 5

BOI3:55 pmBoise Air Term. Gowen Fld

7h 10m

2 stops

ONT10:05 pmOntario

Feb 12

ONT5:10 amOntario

7h 00m

1 stop

BOI1:10 pmBoise Air Term. Gowen Fld

$263

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BoiseOntario

BOI - ONT

BOIONT

Boise Air Term. Gowen Fld

Sat 2/7

6:09 pm-7:16 pm

Nonstop2h 07m

Ontario

Tue 2/24

7:59 pm-10:58 pm

Nonstop1h 59m

$137

BoiseOntario

BOI - ONT

BOIONT

Boise Air Term. Gowen Fld

Fri 2/6

6:09 pm-7:16 pm

Nonstop2h 07m

Ontario

Wed 2/25

7:59 pm-10:58 pm

Nonstop1h 59m

$157

BoiseOntario

BOI - ONT

BOIONT

Boise Air Term. Gowen Fld

Sat 1/24

9:10 am-1:06 pm

1 stop4h 56m

Ontario

Mon 1/26

6:00 am-12:51 pm

1 stop5h 51m

$165

BoiseOntario

BOI - ONT

BOIONT

Boise Air Term. Gowen Fld

Sun 3/22

4:40 pm-5:45 pm

Nonstop2h 05m

Ontario

Sat 3/28

6:25 pm-9:26 pm

Nonstop2h 01m

$167

BoiseOntario

BOI - ONT

BOIONT

Boise Air Term. Gowen Fld

Fri 1/23

12:07 pm-12:20 am

1 stop13h 13m

Ontario

Thu 1/29

6:20 am-11:12 am

1 stop27h 52m

$170

BoiseOntario

BOI - ONT

BOIONT

Boise Air Term. Gowen Fld

Sat 1/24

4:04 pm-8:10 pm

1 stop5h 06m

Ontario

Mon 1/26

7:56 pm-10:57 pm

Nonstop2h 01m

$183

BoiseOntario

BOI - ONT

BOIONT

Boise Air Term. Gowen Fld

Thu 2/5

12:46 pm-5:03 pm

1 stop5h 17m

Ontario

Thu 2/12

6:05 am-11:11 am

1 stop28h 06m

$185

SpokaneOntario

GEG - ONT

GEGONT

Spokane

Thu 2/26

12:22 pm-11:59 pm

1 stop11h 37m

Ontario

Sun 3/1

6:10 am-12:14 pm

1 stop6h 04m

$197

SpokaneOntario

GEG - ONT

GEGONT

Spokane

Wed 1/21

6:05 am-1:56 pm

1 stop7h 51m

Ontario

Sat 1/24

7:30 am-12:37 pm

1 stop5h 07m

$207

SpokaneOntario

GEG - ONT

GEGONT

Spokane

Sat 1/24

5:20 am-10:51 pm

1 stop17h 31m

Ontario

Mon 1/26

7:30 am-12:37 pm

1 stop5h 07m

$208

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Idaho to Ontario

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

Prices

Airlines

Other information

What is the cheapest month to fly to Ontario?

In general, August is the cheapest month to fly from Idaho to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $235. If you aren’t able to travel during the month of August, then book flights to Ontario from Idaho during January instead. Flights to Ontario in January, while not as cheap as those in August, still average around $271.

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

The cheapest day to depart on your flight to Ontario is on a Thursday when prices can be found for as low as $117. This is often the case because there is less demand to fly during this day of the week. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Idaho to Ontario for around $427.

What is the cheapest Idaho to Ontario flight route?

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

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

You are more likely to see cheaper flights to Ontario from Idaho when booking weeks ahead of your departure date. In general, you can expect to find flights to Ontario for around $321 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ontario from Idaho for as low as $137 on momondo.

What cabin class options are available on Idaho to Ontario flights?

There is only 1 cabin class available to choose from on Idaho to Ontario 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 Idaho to Ontario flights?

You could potentially save up to 36% on your flight if you consider stops on a Idaho to Ontario flight.

Cheap Idaho to Ontario flight deals and tips

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

Best Price Found	$117
Fastest flight time	2h 03m
Direct flights	Every day
Airports in Ontario	1 airport

The best flight deal from Idaho to Ontario found on momondo in the last 72 hours is $117

The fastest flight from Idaho to Ontario takes 2h 03m

Direct flights go from Idaho to Ontario every day.

There is 1 airport in Ontario. From Idaho there are direct flights to Ontario (ONT).

Search flight deals

When did momondo last update prices for flights from Idaho to Ontario Airport?
Prices for flights from Idaho to Ontario Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Idaho to Ontario Airport?
As of December 2025, there are 4 operators available to choose from for flights from Idaho to Ontario Airport.
How old do you have to be to fly from Idaho to Ontario Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Idaho to Ontario Airport.
What documentation or ID do you need to fly to Ontario Airport?
The travel and health documents required for your trip to Ontario Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ontario Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Idaho to Ontario?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Idaho to Ontario is Embraer 175 (Enhanced Winglets) (32.61% of total bookings). The next most popular plane models are Boeing 737-800 Passenger/BBJ2 (winglets) (21.74%), Embraer 175 (17.39%), and Airbus A320-100/200 (15.22%).

Best airlines flying from Idaho to Ontario

Compare and see reviews for airlines that fly from Idaho to Ontario with momondo

Airline	Rating	Free Cancellation	Price
Alaska Airlines	PriceFrom $137	Free Cancellation	Rating 8.0 11,549 reviews	Search Alaska Airlines flights
Delta	PriceFrom $158	Free Cancellation	Rating 7.9 8,019 reviews	Search Delta flights
United Airlines	PriceFrom $211	Free Cancellation	Rating 7.4 9,113 reviews	Search United Airlines flights
Southwest	PriceFrom $218	Free Cancellation	Rating 8.0 4,256 reviews	Search Southwest flights

Why use momondo?

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

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 Idaho to Ontario for you.

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

momondo does allow users to show only those flights to Ontario from Idaho which offer a flexible booking policy as well as other useful filters and features.

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

Once all potential Idaho to Ontario flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Price alerts on flights to Ontario from Idaho are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.