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 39% of people opting to fly with this airline when traveling to Idaho. Keep in mind that there are 8 different airlines that fly to Idaho on a routine basis, so you have a few additional options to choose from.

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

9 flights are operational weekly from Ontario to Idaho as of June 2026. The most popular departure day for this route is Tue, with 22% of flights per week taking off on this day.

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

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

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 June 2026. The most frequent departure time is 4:00PM, with 100% of daily flights leaving in the afternoon.

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 June 2026, there are 4 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.

$109 Cheap Flights from Ontario to Idaho in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ontario to Idaho

Round-trip

One-way

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Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

4:50 pm - 7:45 pm

ONT

BOI

1h 55mnonstop

3:02 pm - 4:10 pm

BOI

ONT

2h 08mnonstop

$177Alaska Airlines

Sat, Sep 19 - Wed, Sep 23

4:42 pm - 7:42 pm

ONT

BOI

2h 00mnonstop

2:51 pm - 4:02 pm

BOI

ONT

2h 11mnonstop

$187Alaska Airlines

Thu, Oct 22 - Tue, Oct 27

5:05 pm - 11:59 pm

ONT

BOI

5h 54m

1 stop

1:06 pm - 4:24 pm

BOI

ONT

4h 18m

1 stop

$202Delta

Thu, Aug 20 - Sat, Aug 22

11:47 am - 8:24 pm

ONT

GEG

8h 37m

1 stop

9:14 pm - 8:03 am

GEG

ONT

10h 49m

1 stop

$255Multiple Airlines

Thu, Aug 13 - Sun, Aug 16

4:09 pm - 4:05 pm

ONT

IDA

22h 56m

1 stop

10:54 pm - 8:03 am

IDA

ONT

10h 09m

1 stop

$272Multiple Airlines

Thu, Aug 6 - Mon, Aug 10

6:00 am - 12:26 pm

ONT

WYS

5h 26m

1 stop

1:10 pm - 10:52 pm

WYS

ONT

10h 42m

2 stops

$304Delta

Wed, Jul 22 - Wed, Jul 29

11:10 am - 3:05 pm

ONT

GEG

3h 55m

1 stop

5:45 am - 12:20 pm

GEG

ONT

6h 35m

1 stop

$328Southwest

Wed, Sep 2 - Sat, Sep 12

11:10 am - 3:05 pm

ONT

GEG

3h 55m

1 stop

11:20 am - 7:45 pm

GEG

ONT

8h 25m

2 stops

$334Southwest

Wed, Sep 2 - Sat, Sep 12

1:18 pm - 8:58 pm

ONT

JAC

6h 40m

1 stop

8:00 am - 12:12 pm

JAC

ONT

5h 12m

1 stop

$429United Airlines

Sat, Jul 11 - Tue, Jul 14

5:00 am - 1:20 pm

ONT

WYS

7h 20m

1 stop

1:55 pm - 8:53 pm

WYS

ONT

7h 58m

1 stop

$433United Airlines

Tue, Aug 18 - Tue, Aug 25

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Delta flights from Ontario to Idaho

Our best Delta deals on Ontario to Idaho flight tickets

Delta

Aug 20

ONT5:05 pmOntario

5h 54m

1 stop

BOI11:59 pmBoise Air Term. Gowen Fld

Aug 22

BOI1:06 pmBoise Air Term. Gowen Fld

4h 18m

1 stop

ONT4:24 pmOntario

$202

Delta

Aug 20

ONT5:05 pmOntario

5h 54m

1 stop

BOI11:59 pmBoise Air Term. Gowen Fld

Aug 23

BOI6:00 amBoise Air Term. Gowen Fld

3h 52m

1 stop

ONT8:52 amOntario

$217

Delta

Aug 19

ONT6:00 amOntario

5h 14m

1 stop

BOI12:14 pmBoise Air Term. Gowen Fld

Aug 24

BOI6:45 pmBoise Air Term. Gowen Fld

5h 49m

1 stop

ONT11:34 pmOntario

$262

Alaska Airlines flights from Ontario to Idaho

Our best Alaska Airlines deals on Ontario to Idaho flight tickets

Alaska Airlines

Aug 24

ONT4:50 pmOntario

1h 55m

BOI7:45 pmBoise Air Term. Gowen Fld

Sep 22

BOI3:02 pmBoise Air Term. Gowen Fld

2h 08m

ONT4:10 pmOntario

$172

Alaska Airlines

Sep 19

ONT4:50 pmOntario

1h 55m

BOI7:45 pmBoise Air Term. Gowen Fld

Sep 23

BOI3:02 pmBoise Air Term. Gowen Fld

2h 08m

ONT4:10 pmOntario

$177

Alaska Airlines

Oct 22

ONT4:42 pmOntario

2h 00m

BOI7:42 pmBoise Air Term. Gowen Fld

Oct 27

BOI2:51 pmBoise Air Term. Gowen Fld

2h 11m

ONT4:02 pmOntario

$187

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Sat 9/19

4:50 pm-7:45 pm

Nonstop1h 55m

Boise Air Term. Gowen Fld

Wed 9/23

3:02 pm-4:10 pm

Nonstop2h 08m

$177

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Thu 10/22

4:42 pm-7:42 pm

Nonstop2h 00m

Boise Air Term. Gowen Fld

Tue 10/27

2:51 pm-4:02 pm

Nonstop2h 11m

$187

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Thu 8/20

5:05 pm-11:59 pm

1 stop5h 54m

Boise Air Term. Gowen Fld

Sat 8/22

1:06 pm-4:24 pm

1 stop4h 18m

$202

OntarioSpokane

ONT - GEG

ONTGEG

Ontario

Thu 8/13

11:47 am-8:24 pm

1 stop8h 37m

Spokane

Sun 8/16

9:14 pm-8:03 am

1 stop10h 49m

$255

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

Thu 8/6

4:09 pm-4:05 pm

1 stop22h 56m

Idaho Falls Fanning Field

Mon 8/10

10:54 pm-8:03 am

1 stop10h 09m

$272

OntarioWest Yellowstone

ONT - WYS

ONTWYS

Ontario

Wed 7/22

6:00 am-12:26 pm

1 stop5h 26m

West Yellowstone

Wed 7/29

1:10 pm-10:52 pm

2 stops10h 42m

$304

OntarioSpokane

ONT - GEG

ONTGEG

Ontario

Wed 9/2

11:10 am-3:05 pm

1 stop3h 55m

Spokane

Sat 9/12

5:45 am-12:20 pm

1 stop6h 35m

$328

OntarioSpokane

ONT - GEG

ONTGEG

Ontario

Wed 9/2

11:10 am-3:05 pm

1 stop3h 55m

Spokane

Sat 9/12

11:20 am-7:45 pm

2 stops8h 25m

$334

OntarioJackson

ONT - JAC

ONTJAC

Ontario

Sat 7/11

1:18 pm-8:58 pm

1 stop6h 40m

Jackson Hole

Tue 7/14

8:00 am-12:12 pm

1 stop5h 12m

$429

OntarioWest Yellowstone

ONT - WYS

ONTWYS

Ontario

Tue 8/18

5:00 am-1:20 pm

1 stop7h 20m

West Yellowstone

Tue 8/25

1:55 pm-8:53 pm

1 stop7h 58m

$433

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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, May 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 $79. If you don’t want to visit Idaho in May, then you should wait until January to fly from Ontario, when ticket prices are also cheap, with an average price of $97.

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 $312 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 $309 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 $137 on momondo.

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

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

You could potentially save up to 43% 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	$212
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 $212. The best round-trip flight deal from Ontario to Idaho found on momondo in the last 72 hours is $317.

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 June 2026, there are 4 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 (Enhanced Winglets) (27.27% of total bookings). The next most popular plane models are Embraer 175 (25.97%), Boeing 737-800 Passenger/BBJ2 (winglets) (16.88%), and Airbus A320-100/200 (7.79%).

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 $117	Free Cancellation	Rating 7.9 12,572 reviews	Search Alaska Airlines flights
Southwest	PriceFrom $168	Free Cancellation	Rating 7.9 4,242 reviews	Search Southwest flights
Delta	PriceFrom $169	Free Cancellation	Rating 7.8 8,434 reviews	Search Delta flights
United Airlines	PriceFrom $196	Free Cancellation	Rating 7.4 9,885 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 $75

Flights to Los Angelesfrom $56

Flights to Orlandofrom $63

Flights to Miamifrom $78

Flights to Chicagofrom $63

Flights to San Franciscofrom $50

Flights to Las Vegasfrom $56

Flights to Washington, D.C.from $57

Flights to Bostonfrom $72

Flights to Atlantafrom $58

Flights to Fort Lauderdalefrom $50

Flights to Dallasfrom $59

Cheap flights from Ontario to Idaho from $109

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 10/1. 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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Delta flights from Ontario to Idaho

Our best Delta deals on Ontario to Idaho flight tickets

Alaska Airlines flights from Ontario to Idaho

Our best Alaska Airlines deals on Ontario to Idaho flight tickets

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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?

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

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

Popular cities in Idaho

Popular flights according to clicks in the last 7 days on momondo

Ontario flight routes

According to popular flight searches on momondo this year

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