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

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

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

7 flights are operational weekly from Ontario to Idaho as of May 2026. The most popular departure day for this route is Mon, with 14% of flights per week taking off on this day.

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

The number of flights available between Ontario and Idaho is 1 per day as of May 2026. The most frequent departure time is 2:00PM, with 100% of daily flights leaving in the afternoon.

What airlines fly to Idaho?

Alaska Airlines, Delta and Allegiant Air are the top three most popular airlines that fly to Idaho from Ontario according to our data. Alaska Airlines is the first choice among our users, with 36% of people opting to fly with this airline when traveling to Idaho. Keep in mind that there are 9 different airlines that fly to Idaho on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from Ontario Airport to Idaho were last updated today.

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

As of May 2026, there are 5 operators available to choose from for flights from Ontario Airport to Idaho.

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

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 Ontario Airport to Idaho.

What documentation or ID do you need to fly to Idaho?

The travel and health documents required for your trip to Idaho 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 Idaho. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$70 Cheap Flights from Ontario to Idaho in 2026

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Find the cheapest flights from Ontario to Idaho

Round-trip

One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

7:48 pm - 10:47 pm

ONT

BOI

1h 59mnonstop

4:14 pm - 5:17 pm

BOI

ONT

2h 03mnonstop

$157Alaska Airlines

Tue, May 26 - Sat, May 30

6:00 am - 12:30 pm

ONT

BOI

5h 30m

1 stop

1:25 pm - 11:49 pm

BOI

ONT

11h 24m

1 stop

$160Frontier

Sun, May 24 - Tue, Jun 2

7:48 pm - 10:47 pm

ONT

BOI

1h 59mnonstop

4:14 pm - 5:17 pm

BOI

ONT

2h 03mnonstop

$177Alaska Airlines

Thu, May 28 - Sat, May 30

6:00 am - 12:38 pm

ONT

BOI

5h 38m

1 stop

1:33 pm - 11:49 pm

BOI

ONT

11h 16m

1 stop

$180Frontier

Thu, Jun 4 - Sun, Jun 7

6:00 am - 11:56 am

ONT

BOI

4h 56m

1 stop

6:00 pm - 10:32 pm

BOI

ONT

5h 32m

1 stop

$197Delta

Tue, May 26 - Wed, Jun 3

11:51 am - 7:57 pm

ONT

GEG

8h 06m

1 stop

8:47 pm - 7:32 pm

GEG

ONT

22h 45m

1 stop

$228Multiple Airlines

Thu, Jun 4 - Sun, Jun 7

3:34 pm - 4:08 pm

ONT

IDA

23h 34m

1 stop

10:56 pm - 3:08 pm

IDA

ONT

17h 12m

1 stop

$248Multiple Airlines

Thu, Jun 25 - Mon, Jun 29

6:00 am - 10:47 am

ONT

IDA

3h 47m

1 stop

6:54 pm - 11:34 pm

IDA

ONT

5h 40m

1 stop

$309Delta

Wed, May 27 - Fri, May 29

1:40 pm - 9:51 pm

ONT

SUN

7h 11m

1 stop

2:38 pm - 8:46 pm

SUN

ONT

7h 08m

1 stop

$369United Airlines

Sat, May 30 - Sat, Jun 6

5:00 am - 1:28 pm

ONT

WYS

7h 28m

1 stop

2:19 pm - 8:42 pm

WYS

ONT

7h 23m

1 stop

$389United Airlines

Tue, May 19 - Wed, May 27

Frontier flights from Ontario to Idaho

Our best Frontier deals on Ontario to Idaho flight tickets

Frontier

May 24

ONT6:00 amOntario

5h 30m

1 stop

BOI12:30 pmBoise Air Term. Gowen Fld

Jun 2

BOI1:25 pmBoise Air Term. Gowen Fld

11h 24m

1 stop

ONT11:49 pmOntario

$160

Frontier

Jun 4

ONT6:00 amOntario

5h 38m

1 stop

BOI12:38 pmBoise Air Term. Gowen Fld

Jun 7

BOI1:33 pmBoise Air Term. Gowen Fld

11h 16m

1 stop

ONT11:49 pmOntario

$180

Frontier

Jun 23

ONT6:00 amOntario

5h 30m

1 stop

BOI12:30 pmBoise Air Term. Gowen Fld

Jun 30

BOI1:25 pmBoise Air Term. Gowen Fld

11h 24m

1 stop

ONT11:49 pmOntario

$190

Delta flights from Ontario to Idaho

Our best Delta deals on Ontario to Idaho flight tickets

Delta

May 26

ONT6:00 amOntario

4h 56m

1 stop

BOI11:56 amBoise Air Term. Gowen Fld

Jun 3

BOI6:00 pmBoise Air Term. Gowen Fld

5h 32m

1 stop

ONT10:32 pmOntario

$197

Delta

May 29

ONT6:00 amOntario

4h 56m

1 stop

BOI11:56 amBoise Air Term. Gowen Fld

Jun 3

BOI3:14 pmBoise Air Term. Gowen Fld

8h 18m

1 stop

ONT10:32 pmOntario

$217

Delta

Jun 6

ONT5:55 pmOntario

4h 09m

1 stop

BOI11:04 pmBoise Air Term. Gowen Fld

Jun 7

BOI6:00 amBoise Air Term. Gowen Fld

3h 50m

1 stop

ONT8:50 amOntario

$218

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Tue 5/26

7:48 pm-10:47 pm

Nonstop1h 59m

Boise Air Term. Gowen Fld

Sat 5/30

4:14 pm-5:17 pm

Nonstop2h 03m

$157

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Sun 5/24

6:00 am-12:30 pm

1 stop5h 30m

Boise Air Term. Gowen Fld

Tue 6/2

1:25 pm-11:49 pm

1 stop11h 24m

$160

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Thu 5/28

7:48 pm-10:47 pm

Nonstop1h 59m

Boise Air Term. Gowen Fld

Sat 5/30

4:14 pm-5:17 pm

Nonstop2h 03m

$177

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Thu 6/4

6:00 am-12:38 pm

1 stop5h 38m

Boise Air Term. Gowen Fld

Sun 6/7

1:33 pm-11:49 pm

1 stop11h 16m

$180

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Tue 5/26

6:00 am-11:56 am

1 stop4h 56m

Boise Air Term. Gowen Fld

Wed 6/3

6:00 pm-10:32 pm

1 stop5h 32m

$197

OntarioSpokane

ONT - GEG

ONTGEG

Ontario

Thu 6/4

11:51 am-7:57 pm

1 stop8h 06m

Spokane

Sun 6/7

8:47 pm-7:32 pm

1 stop22h 45m

$228

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

Thu 6/25

3:34 pm-4:08 pm

1 stop23h 34m

Idaho Falls Fanning Field

Mon 6/29

10:56 pm-3:08 pm

1 stop17h 12m

$248

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

Wed 5/27

6:00 am-10:47 am

1 stop3h 47m

Idaho Falls Fanning Field

Fri 5/29

6:54 pm-11:34 pm

1 stop5h 40m

$309

OntarioHailey

ONT - SUN

ONTSUN

Ontario

Sat 5/30

1:40 pm-9:51 pm

1 stop7h 11m

Hailey Sun Valley-Friedman

Sat 6/6

2:38 pm-8:46 pm

1 stop7h 08m

$369

OntarioWest Yellowstone

ONT - WYS

ONTWYS

Ontario

Tue 5/19

5:00 am-1:28 pm

1 stop7h 28m

West Yellowstone

Wed 5/27

2:19 pm-8:42 pm

1 stop7h 23m

$389

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Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Ontario to Idaho

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 Idaho?

In general, January is the cheapest month to fly from Ontario to Idaho. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $97. If you don’t want to visit Idaho in January, then you should wait until July to fly from Ontario, when ticket prices are also cheap, with an average price of $106.

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

Our data shows that Tuesday is the least expensive day to fly to Idaho. Tickets to fly out on this day can be as low as $167. On the other hand, Sunday is the most expensive day to depart from Ontario because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $417.

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

According to our data, the cheapest time of day to fly to Idaho is at noon. momondo users have found flights departing from Ontario to Idaho at noon for as low as $167. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In the afternoon is when there is more demand to fly to Idaho, so prices are often more expensive at around $287 per ticket.

What is the cheapest Ontario to Idaho flight route?

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

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

You are more likely to see cheaper flights to Idaho from Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Idaho for around $317 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Idaho from Ontario for as low as $152 on momondo.

Can stopping save me money on Ontario to Idaho flights?

You could potentially save up to 47% on your flight if you consider stops on a Ontario to Idaho flight.

Cheap Ontario to Idaho flight deals and tips

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

Best Price Found	$180
Fastest flight time	1h 55m
Direct flights	Every day
Airports in Idaho	27 airports

The best one-way flight to Idaho from Ontario in the past 72 hours is $180. The best round-trip flight deal from Ontario to Idaho found on momondo in the last 72 hours is $157.

The fastest flight from Ontario to Idaho takes 1h 55m

Direct flights go from Ontario to Idaho every day.

There are 27 airports in Idaho. From Ontario there are direct flights to Boise Air Term. Gowen Fld (BOI).

Search flight deals

Frequently asked questions about flying from Ontario to Idaho

When did momondo last update prices for flights from Ontario Airport to Idaho?
Prices for flights from Ontario Airport to Idaho were last updated today.
How many operators does momondo search for flights from Ontario Airport to Idaho?
As of May 2026, there are 5 operators available to choose from for flights from Ontario Airport to Idaho.
How old do you have to be to fly from Ontario Airport to Idaho?
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 Ontario Airport to Idaho.
What documentation or ID do you need to fly to Idaho?
The travel and health documents required for your trip to Idaho 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 Idaho. 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 Ontario to Idaho?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Ontario to Idaho is Embraer 175 (36.67% of total bookings). The next most popular plane models are Embraer 175 (Enhanced Winglets) (35.00%), Boeing 737-800 Passenger/BBJ2 (winglets) (11.67%), and Embraer 170 (5.00%).

Best airlines flying from Ontario to Idaho

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

Airline	Rating	Free Cancellation	Price
Alaska Airlines	PriceFrom $97	Free Cancellation	Rating 7.9 12,322 reviews	Search Alaska Airlines flights
Delta	PriceFrom $153	Free Cancellation	Rating 7.9 8,459 reviews	Search Delta flights
Southwest	PriceFrom $176	Free Cancellation	Rating 8.0 4,310 reviews	Search Southwest flights
United Airlines	PriceFrom $196	Free Cancellation	Rating 7.4 9,682 reviews	Search United Airlines flights

Why use momondo?

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

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 Idaho for you.

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

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

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Ontario to Idaho.

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

Yes. momondo can track prices for Ontario to Idaho flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Popular cities in Idaho

Flights to New Yorkfrom $71

Flights to Los Angelesfrom $51

Flights to Orlandofrom $52

Flights to Miamifrom $50

Flights to Chicagofrom $69

Flights to San Franciscofrom $76

Flights to Las Vegasfrom $56

Flights to Washington, D.C.from $55

Flights to Bostonfrom $92

Flights to Atlantafrom $50

Flights to Dallasfrom $76

Flights to Fort Lauderdalefrom $52

Cheap flights from Ontario to Idaho from $70

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 Idaho departing on 5/24. 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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See travel insights to Idaho from

How to get the cheapest flight ticket from Ontario to Idaho

What is the cheapest month to fly to Idaho?

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

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

What is the cheapest Ontario to Idaho flight route?

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

Can stopping save me money on Ontario to Idaho flights?

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

What airlines fly to Idaho?

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

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

Cheap Ontario to Idaho flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in Idaho

Frequently asked questions about flying from Ontario to Idaho

Best airlines flying from Ontario to Idaho

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

Why use momondo?

An easier way to manage your Idaho 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 Idaho

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According to popular flight searches on momondo this year

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