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 34% 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.

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

Southwest, Frontier, and Delta 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 March 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 March 2026. The most frequent departure time is 6:00PM, with 100% of daily flights leaving in the evening.

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 March 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.

$76 Cheap Flights from Ontario to Idaho in 2026

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Find the cheapest flights from Ontario to Idaho

Round-trip

One-way

Last minute

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Cheap round-trip flights

Enter your travel dates to find the best prices.

6:00 am - 12:27 pm

ONT

BOI

5h 27m

1 stop

1:22 pm - 10:05 am

BOI

ONT

21h 43m

1 stop

$140Frontier

Tue, May 12 - Sun, May 17

12:59 am - 10:49 am

ONT

GEG

9h 50m

1 stop

11:44 am - 7:31 am

GEG

ONT

19h 47m

1 stop

$151Frontier

Wed, Apr 22 - Sun, Apr 26

6:25 pm - 9:26 pm

ONT

BOI

2h 01mnonstop

1:15 pm - 2:19 pm

BOI

ONT

2h 04mnonstop

$177Alaska Airlines

Sat, Apr 18 - Sat, Apr 25

11:05 am - 4:48 pm

ONT

BOI

4h 43m

1 stop

6:15 am - 12:20 pm

BOI

ONT

7h 05m

1 stop

$187United Airlines

Wed, Apr 15 - Wed, Apr 22

6:20 pm - 11:15 pm

ONT

BOI

3h 55m

1 stop

2:00 pm - 7:40 pm

BOI

ONT

6h 40m

2 stops

$192Southwest

Sat, May 2 - Tue, May 5

6:25 pm - 9:26 pm

ONT

BOI

2h 01mnonstop

4:40 pm - 5:45 pm

BOI

ONT

2h 05mnonstop

$197Alaska Airlines

Fri, Apr 17 - Tue, Apr 21

5:00 am - 9:55 am

ONT

BOI

3h 55m

1 stop

6:00 am - 11:55 am

BOI

ONT

6h 55m

2 stops

$212Southwest

Sun, May 3 - Tue, May 5

6:00 am - 10:46 am

ONT

WYS

3h 46m

1 stop

1:09 pm - 4:14 pm

WYS

ONT

4h 05m

1 stop

$314Delta

Sat, Aug 8 - Wed, Aug 12

4:57 pm - 9:29 pm

ONT

JAC

3h 32m

1 stop

5:59 pm - 11:34 pm

JAC

ONT

6h 35m

1 stop

$329Delta

Tue, May 12 - Tue, May 19

5:10 am - 1:35 pm

ONT

SUN

7h 25m

1 stop

2:24 pm - 8:36 pm

SUN

ONT

7h 12m

1 stop

$369United Airlines

Tue, Apr 14 - Sat, Apr 18

United Airlines flights from Ontario to Idaho

Our best United Airlines deals on Ontario to Idaho flight tickets

United Airlines

Apr 15

ONT11:05 amOntario

4h 43m

1 stop

BOI4:48 pmBoise Air Term. Gowen Fld

Apr 22

BOI6:15 amBoise Air Term. Gowen Fld

7h 05m

1 stop

ONT12:20 pmOntario

$187

United Airlines

Apr 25

ONT10:49 amOntario

4h 59m

1 stop

BOI4:48 pmBoise Air Term. Gowen Fld

Apr 28

BOI6:15 amBoise Air Term. Gowen Fld

4h 41m

1 stop

ONT9:56 amOntario

$257

United Airlines

Apr 18

ONT1:27 pmOntario

5h 26m

1 stop

BOI7:53 pmBoise Air Term. Gowen Fld

Apr 19

BOI6:15 amBoise Air Term. Gowen Fld

7h 05m

1 stop

ONT12:20 pmOntario

$292

Delta flights from Ontario to Idaho

Our best Delta deals on Ontario to Idaho flight tickets

Delta

May 8

ONT5:50 pmOntario

5h 05m

1 stop

BOI11:55 pmBoise Air Term. Gowen Fld

May 11

BOI9:16 pmBoise Air Term. Gowen Fld

16h 03m

2 stops

ONT12:19 pmOntario

$242

Delta

Apr 22

ONT5:55 pmOntario

5h 20m

1 stop

GEG11:15 pmSpokane

Apr 25

GEG3:33 pmSpokane

7h 04m

1 stop

ONT10:37 pmOntario

$247

Delta

Apr 23

ONT5:05 pmOntario

15h 42m

2 stops

GEG8:47 amSpokane

Apr 27

GEG5:00 amSpokane

8h 39m

1 stop

ONT1:39 pmOntario

$252

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Tue 5/12

6:00 am-12:27 pm

1 stop5h 27m

Boise Air Term. Gowen Fld

Sun 5/17

1:22 pm-10:05 am

1 stop21h 43m

$140

OntarioSpokane

ONT - GEG

ONTGEG

Ontario

Wed 4/22

12:59 am-10:49 am

1 stop9h 50m

Spokane

Sun 4/26

11:44 am-7:31 am

1 stop19h 47m

$151

Quickest round-trip

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Sat 4/18

6:25 pm-9:26 pm

Nonstop2h 01m

Boise Air Term. Gowen Fld

Sat 4/25

1:15 pm-2:19 pm

Nonstop2h 04m

$177

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Wed 4/15

11:05 am-4:48 pm

1 stop4h 43m

Boise Air Term. Gowen Fld

Wed 4/22

6:15 am-12:20 pm

1 stop7h 05m

$187

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Sat 5/2

6:20 pm-11:15 pm

1 stop3h 55m

Boise Air Term. Gowen Fld

Tue 5/5

2:00 pm-7:40 pm

2 stops6h 40m

$192

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Fri 4/17

6:25 pm-9:26 pm

Nonstop2h 01m

Boise Air Term. Gowen Fld

Tue 4/21

4:40 pm-5:45 pm

Nonstop2h 05m

$197

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Sun 5/3

5:00 am-9:55 am

1 stop3h 55m

Boise Air Term. Gowen Fld

Tue 5/5

6:00 am-11:55 am

2 stops6h 55m

$212

OntarioWest Yellowstone

ONT - WYS

ONTWYS

Ontario

Sat 8/8

6:00 am-10:46 am

1 stop3h 46m

West Yellowstone

Wed 8/12

1:09 pm-4:14 pm

1 stop4h 05m

$314

OntarioJackson

ONT - JAC

ONTJAC

Ontario

Tue 5/12

4:57 pm-9:29 pm

1 stop3h 32m

Jackson Hole

Tue 5/19

5:59 pm-11:34 pm

1 stop6h 35m

$329

OntarioHailey

ONT - SUN

ONTSUN

Ontario

Tue 4/14

5:10 am-1:35 pm

1 stop7h 25m

Hailey Sun Valley-Friedman

Sat 4/18

2:24 pm-8:36 pm

1 stop7h 12m

$369

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 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 $177. If you don’t want to visit Idaho in January, then you should wait until September to fly from Ontario, when ticket prices are also cheap, with an average price of $245.

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

Our data shows that Saturday is the least expensive day to fly to Idaho. Tickets to fly out on this day can be as low as $157. 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 $552.

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 $137. 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 $227 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 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 $307 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 $185 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 64% 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	$338
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 $338. The best round-trip flight deal from Ontario to Idaho found on momondo in the last 72 hours is $217.

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

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 March 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 (38.10% of total bookings). The next most popular plane models are Embraer 175 (Enhanced Winglets) (35.71%), Boeing 737-800 Passenger/BBJ2 (winglets) (9.52%), and Boeing 737 MAX 8 (4.76%).

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 $137	Free Cancellation	Rating 7.9 12,098 reviews	Search Alaska Airlines flights
Delta	PriceFrom $153	Free Cancellation	Rating 7.9 8,319 reviews	Search Delta flights
United Airlines	PriceFrom $196	Free Cancellation	Rating 7.4 9,460 reviews	Search United Airlines flights
Southwest	PriceFrom $216	Free Cancellation	Rating 8.0 4,324 reviews	Search Southwest flights
American Airlines	PriceFrom $227	Free Cancellation	Rating 7.1 11,489 reviews	Search American 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 $66

Flights to Los Angelesfrom $57

Flights to Orlandofrom $47

Flights to Miamifrom $53

Flights to Chicagofrom $66

Flights to San Franciscofrom $84

Flights to Las Vegasfrom $57

Flights to Washington, D.C.from $59

Flights to Bostonfrom $70

Flights to Atlantafrom $49

Flights to Dallasfrom $60

Flights to Seattlefrom $71

Cheap flights from Ontario to Idaho from $76

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 4/15. 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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Our best United Airlines deals on Ontario to Idaho flight tickets

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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 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

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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