What airlines fly to Idaho?

Alaska Airlines, Delta and United Airlines 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 31% 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?

Alaska Airlines, Frontier, and Delta are the most popular carriers operating 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 September 2025, there are 6 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.

$98 Cheap Flights from Ontario to Idaho in 2025/26

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Find the cheapest flights from Ontario to Idaho

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

5:50 pm - 12:08 amONT-BOI

5h 18m1 stop

5:55 pm - 11:39 pmBOI-ONT

6h 44m1 stop

$197Delta

Find Deal

mar., oct. 14 - mar., oct. 21

6:53 am - 11:08 amONT-GEG

28h 15m1 stop

11:53 am - 9:35 amGEG-ONT

21h 42m1 stop

$210Frontier

Find Deal

mié., oct. 15 - dom., oct. 19

6:00 am - 1:58 pmONT-GEG

7h 58m1 stop

7:35 am - 3:17 pmGEG-ONT

7h 42m1 stop

$214Alaska Airlines

Find Deal

mié., oct. 29 - sáb., nov. 1

7:43 pm - 11:09 amONT-BOI

14h 26m1 stop

6:28 am - 11:05 amBOI-ONT

5h 37m1 stop

$216Alaska Airlines

Find Deal

mar., oct. 21 - mar., oct. 28

6:05 am - 8:18 pmONT-GEG

14h 13m1 stop

9:08 pm - 7:47 amGEG-ONT

10h 39m1 stop

$228Multiple Airlines

Find Deal

jue., oct. 23 - dom., oct. 26

5:45 am - 10:55 amONT-BOI

4h 10m1 stop

6:20 am - 12:20 pmBOI-ONT

7h 00m2 stops

$232Southwest

Find Deal

sáb., oct. 25 - mar., oct. 28

11:00 am - 3:35 pmONT-BOI

3h 35m1 stop

12:35 pm - 6:55 pmBOI-ONT

7h 20m2 stops

$242Southwest

Find Deal

mar., oct. 21 - mar., oct. 28

6:05 am - 8:18 pmONT-GEG

14h 13m1 stop

11:53 am - 9:55 pmGEG-ONT

10h 02m2 stops

$288Multiple Airlines

Find Deal

jue., oct. 23 - dom., oct. 26

5:05 am - 1:29 pmONT-BOI

7h 24m1 stop

2:31 pm - 8:44 pmBOI-ONT

7h 13m1 stop

$307United Airlines

Find Deal

dom., oct. 26 - sáb., nov. 1

5:05 am - 1:33 pmONT-SUN

7h 28m1 stop

2:25 pm - 8:24 pmSUN-ONT

6h 59m1 stop

$311United Airlines

Find Deal

lun., oct. 13 - vie., oct. 17

American Airlines flights from Ontario to Idaho

Our best American Airlines deals on Ontario to Idaho flight tickets

American Airlines

Oct 2

ONT4:45 pmOntario

5h 50m

1 stop

BOI11:35 pmBoise Air Term. Gowen Fld

Oct 8

BOI6:40 amBoise Air Term. Gowen Fld

6h 21m

1 stop

ONT12:01 pmOntario

$477

Find similar

American Airlines

Oct 5

ONT6:10 amOntario

6h 07m

1 stop

BOI1:17 pmBoise Air Term. Gowen Fld

Oct 8

BOI6:40 amBoise Air Term. Gowen Fld

6h 21m

1 stop

ONT12:01 pmOntario

$501

Find similar

American Airlines

Sep 28

ONT6:10 amOntario

6h 07m

1 stop

BOI1:17 pmBoise Air Term. Gowen Fld

Sep 29

BOI5:22 pmBoise Air Term. Gowen Fld

5h 26m

1 stop

ONT9:48 pmOntario

$535

Find similar

Delta flights from Ontario to Idaho

Our best Delta deals on Ontario to Idaho flight tickets

Delta

Oct 14

ONT5:50 pmOntario

5h 18m

1 stop

BOI12:08 amBoise Air Term. Gowen Fld

Oct 21

BOI5:55 pmBoise Air Term. Gowen Fld

6h 44m

1 stop

ONT11:39 pmOntario

$197

Find similar

Delta

Oct 14

ONT5:50 pmOntario

5h 18m

1 stop

BOI12:08 amBoise Air Term. Gowen Fld

Oct 21

BOI5:55 pmBoise Air Term. Gowen Fld

6h 44m

1 stop

ONT11:39 pmOntario

$217

Find similar

Delta

Nov 11

ONT6:45 amOntario

8h 20m

1 stop

BOI4:05 pmBoise Air Term. Gowen Fld

Nov 13

BOI5:20 amBoise Air Term. Gowen Fld

6h 48m

1 stop

ONT11:08 amOntario

$227

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OntarioBoise

ONT - BOI

ONTBOI

Ontario

mar. 10/14

5:50 pm-12:08 am

1 stop5h 18m

Boise Air Term. Gowen Fld

mar. 10/21

5:55 pm-11:39 pm

1 stop6h 44m

$197

OntarioSpokane

ONT - GEG

ONTGEG

Ontario

mié. 10/15

6:53 am-11:08 am

1 stop28h 15m

Spokane

dom. 10/19

11:53 am-9:35 am

1 stop21h 42m

$210

OntarioSpokane

ONT - GEG

ONTGEG

Ontario

mié. 10/29

6:00 am-1:58 pm

1 stop7h 58m

Spokane

sáb. 11/1

7:35 am-3:17 pm

1 stop7h 42m

$214

OntarioBoise

ONT - BOI

ONTBOI

Ontario

mar. 10/21

7:43 pm-11:09 am

1 stop14h 26m

Boise Air Term. Gowen Fld

mar. 10/28

6:28 am-11:05 am

1 stop5h 37m

$216

OntarioSpokane

ONT - GEG

ONTGEG

Ontario

jue. 10/23

6:05 am-8:18 pm

1 stop14h 13m

Spokane

dom. 10/26

9:08 pm-7:47 am

1 stop10h 39m

$228

OntarioBoise

ONT - BOI

ONTBOI

Ontario

sáb. 10/25

5:45 am-10:55 am

1 stop4h 10m

Boise Air Term. Gowen Fld

mar. 10/28

6:20 am-12:20 pm

2 stops7h 00m

$232

OntarioBoise

ONT - BOI

ONTBOI

Ontario

mar. 10/21

11:00 am-3:35 pm

1 stop3h 35m

Boise Air Term. Gowen Fld

mar. 10/28

12:35 pm-6:55 pm

2 stops7h 20m

$242

OntarioSpokane

ONT - GEG

ONTGEG

Ontario

jue. 10/23

6:05 am-8:18 pm

1 stop14h 13m

Spokane

dom. 10/26

11:53 am-9:55 pm

2 stops10h 02m

$288

OntarioBoise

ONT - BOI

ONTBOI

Ontario

dom. 10/26

5:05 am-1:29 pm

1 stop7h 24m

Boise Air Term. Gowen Fld

sáb. 11/1

2:31 pm-8:44 pm

1 stop7h 13m

$307

OntarioHailey

ONT - SUN

ONTSUN

Ontario

lun. 10/13

5:05 am-1:33 pm

1 stop7h 28m

Hailey Sun Valley-Friedman

vie. 10/17

2:25 pm-8:24 pm

1 stop6h 59m

$311

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

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 $240. 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 $271.

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

Our data shows that Thursday 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, Wednesday 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 $355.

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 in the afternoon. momondo users have found flights departing from Ontario to Idaho in the afternoon for as low as $186. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. At noon is when there is more demand to fly to Idaho, so prices are often more expensive at around $351 per ticket.

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 $315 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 $199 on momondo.

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	$157
Fastest flight time	2h 17m
Direct flights	Every day
Airports in Idaho	1 airport

The best flight deal from Ontario to Idaho found on momondo in the last 72 hours is $157

The fastest flight from Ontario to Idaho takes 2h 17m

Direct flights go from Ontario to Idaho every day.

There is 1 airport near Idaho: 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 September 2025, there are 6 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) (30.77% of total bookings). The next most popular plane models are Embraer 175 (30.77%), Boeing 737-800 Passenger/BBJ2 (winglets) (19.23%), and Embraer 170 (11.54%).

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
Delta	PriceFrom $169	Free Cancellation	Rating 7.9 7,974 reviews	Search Delta flights
Alaska Airlines	PriceFrom $178	Free Cancellation	Rating 8.0 10,000 reviews	Search Alaska Airlines flights
American Airlines	PriceFrom $218	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
United Airlines	PriceFrom $234	Free Cancellation	Rating 7.4 8,926 reviews	Search United Airlines flights
Southwest	PriceFrom $234	Free Cancellation	Rating 8.0 4,244 reviews	Search Southwest 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.