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 33m on average. Los Angeles is the most popular airport in Ontario.

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

3 flights are operational weekly from Idaho to Ontario as of September 2025. The most popular departure day for this route is Mon, with 33% of flights per week taking off on this day.

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

Southwest, Alaska Airlines, and Delta are the most popular carriers operating from Idaho to 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 31% 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.

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 September 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.

$77 Cheap Flights from Idaho to Ontario in 2025/26

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

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

Trusted and free

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

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Idaho to Los Angeles

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

4:30 pm - 5:42 pmBOI-ONT

2h 12mnonstop

6:22 pm - 9:39 pmONT-BOI

2h 17mnonstop

$177Alaska Airlines

Find Deal

Tue, Feb 24 - Tue, Mar 3

4:30 pm - 5:42 pmBOI-ONT

2h 12mnonstop

6:22 pm - 9:39 pmONT-BOI

2h 17mnonstop

$186Alaska Airlines

Find Deal

Mon, Feb 2 - Sat, Feb 7

6:00 am - 9:05 amBOI-ONT

4h 05m1 stop

4:35 pm - 11:59 pmONT-BOI

6h 24m1 stop

$197Delta

Find Deal

Tue, Oct 14 - Wed, Oct 22

9:08 pm - 10:05 pmGEG-ONT

24h 57m1 stop

6:00 am - 8:14 pmONT-GEG

14h 14m1 stop

$222Multiple Airlines

Find Deal

Thu, Oct 23 - Thu, Oct 30

6:00 am - 9:05 amBOI-ONT

4h 05m1 stop

4:35 pm - 11:59 pmONT-BOI

6h 24m1 stop

$227Delta

Find Deal

Tue, Oct 14 - Fri, Oct 17

9:08 pm - 10:05 pmGEG-ONT

24h 57m1 stop

7:04 am - 11:08 amONT-GEG

28h 04m1 stop

$227Multiple Airlines

Find Deal

Sun, Oct 19 - Sat, Oct 25

12:03 pm - 9:35 amGEG-ONT

21h 32m1 stop

6:53 am - 11:08 amONT-GEG

28h 15m1 stop

$234Frontier

Find Deal

Thu, Oct 16 - Wed, Oct 22

12:03 pm - 11:10 amGEG-ONT

23h 07m1 stop

8:45 am - 11:08 amONT-GEG

26h 23m1 stop

$239Frontier

Find Deal

Thu, Oct 30 - Wed, Nov 5

12:30 pm - 10:25 pmGEG-ONT

9h 55m1 stop

2:20 pm - 10:25 pmONT-GEG

8h 05m2 stops

$287Southwest

Find Deal

Thu, Oct 23 - Tue, Oct 28

6:00 am - 10:15 amGEG-ONT

4h 15m1 stop

2:25 pm - 10:25 pmONT-GEG

8h 00m2 stops

$307Southwest

Find Deal

Wed, Oct 22 - Wed, Oct 29

Alaska Airlines flights from Idaho to Ontario

Our best Alaska Airlines deals on Idaho to Ontario flight tickets

Alaska Airlines

Feb 24

BOI4:30 pmBoise Air Term. Gowen Fld

2h 12m

ONT5:42 pmOntario

Mar 3

ONT6:22 pmOntario

2h 17m

BOI9:39 pmBoise Air Term. Gowen Fld

$177

Find similar

Alaska Airlines

Feb 2

BOI4:30 pmBoise Air Term. Gowen Fld

2h 12m

ONT5:42 pmOntario

Feb 7

ONT6:22 pmOntario

2h 17m

BOI9:39 pmBoise Air Term. Gowen Fld

$186

Find similar

Alaska Airlines

Dec 13

BOI6:03 amBoise Air Term. Gowen Fld

6h 16m

1 stop

ONT11:19 amOntario

Jan 7

ONT6:22 pmOntario

2h 17m

BOI9:39 pmBoise Air Term. Gowen Fld

$201

Find similar

American Airlines flights from Idaho to Ontario

Our best American Airlines deals on Idaho to Ontario flight tickets

American Airlines

Oct 18

BOI6:40 amBoise Air Term. Gowen Fld

6h 21m

1 stop

ONT12:01 pmOntario

Oct 20

ONT4:49 pmOntario

5h 43m

1 stop

BOI11:32 pmBoise Air Term. Gowen Fld

$324

Find similar

American Airlines

Oct 2

BOI5:22 pmBoise Air Term. Gowen Fld

5h 26m

1 stop

ONT9:48 pmOntario

Oct 7

ONT1:00 pmOntario

5h 37m

1 stop

BOI7:37 pmBoise Air Term. Gowen Fld

$477

Find similar

American Airlines

Oct 1

BOI6:35 amBoise Air Term. Gowen Fld

6h 21m

1 stop

ONT11:56 amOntario

Oct 5

ONT6:10 amOntario

6h 07m

1 stop

BOI1:17 pmBoise Air Term. Gowen Fld

$537

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BoiseOntario

BOI - ONT

BOIONT

Boise Air Term. Gowen Fld

Tue 2/24

4:30 pm-5:42 pm

Nonstop2h 12m

Ontario

Tue 3/3

6:22 pm-9:39 pm

Nonstop2h 17m

$177

BoiseOntario

BOI - ONT

BOIONT

Boise Air Term. Gowen Fld

Mon 2/2

4:30 pm-5:42 pm

Nonstop2h 12m

Ontario

Sat 2/7

6:22 pm-9:39 pm

Nonstop2h 17m

$186

BoiseOntario

BOI - ONT

BOIONT

Boise Air Term. Gowen Fld

Tue 10/14

6:00 am-9:05 am

1 stop4h 05m

Ontario

Wed 10/22

4:35 pm-11:59 pm

1 stop6h 24m

$197

SpokaneOntario

GEG - ONT

GEGONT

Spokane

Thu 10/23

9:08 pm-10:05 pm

1 stop24h 57m

Ontario

Thu 10/30

6:00 am-8:14 pm

1 stop14h 14m

$222

BoiseOntario

BOI - ONT

BOIONT

Boise Air Term. Gowen Fld

Tue 10/14

6:00 am-9:05 am

1 stop4h 05m

Ontario

Fri 10/17

4:35 pm-11:59 pm

1 stop6h 24m

$227

SpokaneOntario

GEG - ONT

GEGONT

Spokane

Sun 10/19

9:08 pm-10:05 pm

1 stop24h 57m

Ontario

Sat 10/25

7:04 am-11:08 am

1 stop28h 04m

$227

SpokaneOntario

GEG - ONT

GEGONT

Spokane

Thu 10/16

12:03 pm-9:35 am

1 stop21h 32m

Ontario

Wed 10/22

6:53 am-11:08 am

1 stop28h 15m

$234

SpokaneOntario

GEG - ONT

GEGONT

Spokane

Thu 10/30

12:03 pm-11:10 am

1 stop23h 07m

Ontario

Wed 11/5

8:45 am-11:08 am

1 stop26h 23m

$239

SpokaneOntario

GEG - ONT

GEGONT

Spokane

Thu 10/23

12:30 pm-10:25 pm

1 stop9h 55m

Ontario

Tue 10/28

2:20 pm-10:25 pm

2 stops8h 05m

$287

SpokaneOntario

GEG - ONT

GEGONT

Spokane

Wed 10/22

6:00 am-10:15 am

1 stop4h 15m

Ontario

Wed 10/29

2:25 pm-10:25 pm

2 stops8h 00m

$307

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 October instead. Flights to Ontario in October, 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 Tuesday when prices can be found for as low as $284. 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 $353.

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 at noon when prices are $374 on average. Flights to Ontario from Idaho at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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 $318 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 $175 on momondo.

Can stopping save me money on Idaho to Ontario flights?

You could potentially save up to 74% 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

Fastest flight time	2h 12m
Direct flights	Every day
Airports in Ontario	1 airport

The fastest flight from Idaho to Ontario takes 2h 12m

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 September 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) (50.00% of total bookings). The next most popular plane model is Embraer 175 (50.00%).

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 7,973 reviews	Search Delta flights
Alaska Airlines	PriceFrom $217	Free Cancellation	Rating 8.0 10,000 reviews	Search Alaska Airlines flights
Southwest	PriceFrom $218	Free Cancellation	Rating 8.0 4,246 reviews	Search Southwest flights
United Airlines	PriceFrom $232	Free Cancellation	Rating 7.4 8,928 reviews	Search United Airlines 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.