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.

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 16m on average, while flying from Hailey to Los Angeles is 2h 34m on average. Los Angeles is the most popular airport in Ontario.

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

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

How many flights depart from Idaho to Ontario on average per week?

4 flights are operational weekly from Idaho to Ontario as of November 2025. The most popular departure day for this route is Mon, with 25% of flights per week taking off on this day.

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 November 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.

$61 Cheap Flights from Idaho to Ontario in 2025/26

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12:48 pm - 6:53 pmBOI-ONT

7h 05m1 stop

12:04 pm - 11:49 amONT-BOI

22h 45m1 stop

$137Frontier

Find Deal

Fri, Nov 28 - Thu, Dec 4

12:06 pm - 6:13 pmGEG-ONT

6h 07m1 stop

12:58 am - 11:25 amONT-GEG

10h 27m1 stop

$144Frontier

Find Deal

Sat, Nov 22 - Mon, Nov 24

6:07 pm - 7:14 pmBOI-ONT

2h 07mnonstop

7:37 pm - 10:36 pmONT-BOI

1h 59mnonstop

$156Alaska Airlines

Find Deal

Wed, Feb 25 - Mon, Mar 2

12:54 pm - 11:59 pmBOI-ONT

12h 05m1 stop

7:00 am - 12:54 pmONT-BOI

4h 54m1 stop

$164Multiple Airlines

Find Deal

Thu, Jan 29 - Sun, Feb 1

5:20 am - 11:13 amBOI-ONT

6h 53m1 stop

12:40 pm - 8:20 pmONT-BOI

6h 40m1 stop

$167Delta

Find Deal

Sat, Dec 6 - Mon, Dec 8

12:37 pm - 4:05 pmBOI-ONT

4h 28m1 stop

4:45 pm - 11:13 pmONT-BOI

5h 28m1 stop

$172American Airlines

Find Deal

Tue, Jan 6 - Fri, Jan 9

12:54 pm - 11:59 pmBOI-ONT

12h 05m1 stop

7:56 pm - 10:57 pmONT-BOI

2h 01mnonstop

$174Multiple Airlines

Find Deal

Thu, Jan 29 - Sun, Feb 1

5:20 am - 11:13 amBOI-ONT

6h 53m1 stop

5:49 pm - 11:59 pmONT-BOI

5h 10m1 stop

$177Delta

Find Deal

Wed, Dec 17 - Thu, Dec 18

6:00 pm - 9:50 amBOI-ONT

16h 50m1 stop

7:56 pm - 10:57 pmONT-BOI

2h 01mnonstop

$182Alaska Airlines

Find Deal

Mon, Jan 5 - Sat, Jan 10

7:00 am - 11:53 amIDA-ONT

5h 53m1 stop

4:47 pm - 10:21 pmONT-IDA

4h 34m1 stop

$453American Airlines

Find Deal

Wed, Dec 31 - Sat, Jan 3

American Airlines flights from Idaho to Ontario

Our best American Airlines deals on Idaho to Ontario flight tickets

American Airlines

Jan 6

BOI12:37 pmBoise Air Term. Gowen Fld

4h 28m

1 stop

ONT4:05 pmOntario

Jan 9

ONT4:45 pmOntario

5h 28m

1 stop

BOI11:13 pmBoise Air Term. Gowen Fld

$172

Find similar

American Airlines

Nov 18

BOI2:16 pmBoise Air Term. Gowen Fld

5h 04m

1 stop

ONT6:20 pmOntario

Nov 25

ONT9:59 amOntario

5h 56m

1 stop

BOI4:55 pmBoise Air Term. Gowen Fld

$447

Find similar

American Airlines

Nov 24

BOI2:21 pmBoise Air Term. Gowen Fld

4h 59m

1 stop

ONT6:20 pmOntario

Nov 28

ONT9:59 amOntario

6h 55m

1 stop

BOI5:54 pmBoise Air Term. Gowen Fld

$466

Find similar

Alaska Airlines flights from Idaho to Ontario

Our best Alaska Airlines deals on Idaho to Ontario flight tickets

Alaska Airlines

Feb 25

BOI6:07 pmBoise Air Term. Gowen Fld

2h 07m

ONT7:14 pmOntario

Mar 2

ONT7:37 pmOntario

1h 59m

BOI10:36 pmBoise Air Term. Gowen Fld

$156

Find similar

Alaska Airlines

Jan 5

BOI6:00 pmBoise Air Term. Gowen Fld

16h 50m

1 stop

ONT9:50 amOntario

Jan 10

ONT7:56 pmOntario

2h 01m

BOI10:57 pmBoise Air Term. Gowen Fld

$182

Find similar

Alaska Airlines

Feb 4

BOI12:46 pmBoise Air Term. Gowen Fld

5h 17m

1 stop

ONT5:03 pmOntario

Feb 6

ONT11:53 amOntario

5h 29m

1 stop

BOI6:22 pmBoise Air Term. Gowen Fld

$185

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BoiseOntario

BOI - ONT

BOIONT

Boise Air Term. Gowen Fld

Fri 11/28

12:48 pm-6:53 pm

1 stop7h 05m

Ontario

Thu 12/4

12:04 pm-11:49 am

1 stop22h 45m

$137

SpokaneOntario

GEG - ONT

GEGONT

Spokane

Sat 11/22

12:06 pm-6:13 pm

1 stop6h 07m

Ontario

Mon 11/24

12:58 am-11:25 am

1 stop10h 27m

$144

BoiseOntario

BOI - ONT

BOIONT

Boise Air Term. Gowen Fld

Wed 2/25

6:07 pm-7:14 pm

Nonstop2h 07m

Ontario

Mon 3/2

7:37 pm-10:36 pm

Nonstop1h 59m

$156

BoiseOntario

BOI - ONT

BOIONT

Boise Air Term. Gowen Fld

Thu 1/29

12:54 pm-11:59 pm

1 stop12h 05m

Ontario

Sun 2/1

7:00 am-12:54 pm

1 stop4h 54m

$164

BoiseOntario

BOI - ONT

BOIONT

Boise Air Term. Gowen Fld

Sat 12/6

5:20 am-11:13 am

1 stop6h 53m

Ontario

Mon 12/8

12:40 pm-8:20 pm

1 stop6h 40m

$167

BoiseOntario

BOI - ONT

BOIONT

Boise Air Term. Gowen Fld

Tue 1/6

12:37 pm-4:05 pm

1 stop4h 28m

Ontario

Fri 1/9

4:45 pm-11:13 pm

1 stop5h 28m

$172

BoiseOntario

BOI - ONT

BOIONT

Boise Air Term. Gowen Fld

Thu 1/29

12:54 pm-11:59 pm

1 stop12h 05m

Ontario

Sun 2/1

7:56 pm-10:57 pm

Nonstop2h 01m

$174

BoiseOntario

BOI - ONT

BOIONT

Boise Air Term. Gowen Fld

Wed 12/17

5:20 am-11:13 am

1 stop6h 53m

Ontario

Thu 12/18

5:49 pm-11:59 pm

1 stop5h 10m

$177

BoiseOntario

BOI - ONT

BOIONT

Boise Air Term. Gowen Fld

Mon 1/5

6:00 pm-9:50 am

1 stop16h 50m

Ontario

Sat 1/10

7:56 pm-10:57 pm

Nonstop2h 01m

$182

Idaho FallsOntario

IDA - ONT

IDAONT

Idaho Falls Fanning Field

Wed 12/31

7:00 am-11:53 am

1 stop5h 53m

Ontario

Sat 1/3

4:47 pm-10:21 pm

1 stop4h 34m

$453

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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

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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 September instead. Flights to Ontario in September, while not as cheap as those in August, still average around $281.

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

In the evening is the cheapest time of day to fly from Idaho to Ontario when you can find flight prices for as low as $313. Flying to Ontario in the evening is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $427 on average. Flights to Ontario from Idaho in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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 $330 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 68% 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	$227
Fastest flight time	2h 07m
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 $227

The fastest flight from Idaho to Ontario takes 2h 07m

Direct flights go from Idaho to Ontario every day.

There is 1 airport near Ontario: 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 November 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) (41.18% of total bookings). The next most popular plane models are Embraer 175 (20.59%), Boeing 737-800 Passenger/BBJ2 (winglets) (14.71%), and Embraer 170 (14.71%).

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
Delta	PriceFrom $156	Free Cancellation	Rating 7.9 8,003 reviews	Search Delta flights
United Airlines	PriceFrom $211	Free Cancellation	Rating 7.4 9,011 reviews	Search United Airlines flights
Alaska Airlines	PriceFrom $217	Free Cancellation	Rating 8.0 11,260 reviews	Search Alaska Airlines flights
Southwest	PriceFrom $218	Free Cancellation	Rating 8.0 4,236 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.

An easier way to manage your Ontario 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.

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Flights to New Yorkfrom $44

Flights to Los Angelesfrom $51

Flights to Miamifrom $48

Flights to Chicagofrom $58

Flights to Orlandofrom $47

Flights to Las Vegasfrom $40

Flights to San Franciscofrom $57

Flights to Washington, D.C.from $50

Flights to Bostonfrom $48

Flights to Atlantafrom $44

Flights to Dallasfrom $53

Flights to Seattlefrom $49

Fly to other destinations from Idaho

Flights from Boise Air Term. Gowen Fld to Las Vegas Harry Reid Intl

Flights from Idaho Falls Fanning Field to Las Vegas Harry Reid Intl

Flights from Idaho Falls Fanning Field to Portland

Flights from Boise Air Term. Gowen Fld to Bozeman Gallatin Field

Flights from Boise Air Term. Gowen Fld to Burbank Bob Hope

Flights from Idaho Falls Fanning Field to Santa Ana J. Wayne/Orange Cnty

Cheap flights from Idaho to Los Angeles from $61

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Idaho to Los Angeles departing on 1/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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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

What is the cheapest month to fly to Ontario?

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

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?

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 68% on your flight if you consider stops on a Idaho to Ontario flight.

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

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

What airlines fly to Ontario?

How many flights depart from Idaho to Ontario on average per week?

4 flights are operational weekly from Idaho to Ontario as of November 2025. The most popular departure day for this route is Mon, with 25% of flights per week taking off on this day.

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 16m on average, while flying from Hailey to Los Angeles is 2h 34m on average. Los Angeles is the most popular airport in Ontario.

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

Fastest flight time

Direct flights

Airports in Ontario

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

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

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

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

What is the most popular plane model from Idaho to Ontario?

Best airlines flying from Idaho to Ontario

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

Why use momondo?

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

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

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

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

An easier way to manage your Ontario 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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing California