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 32% 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.

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

Hawaiian Airlines, Alaska Airlines, and Frontier 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 July 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.

$88 Cheap Flights from Ontario to Idaho in 2025

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Find the cheapest flights from Ontario to Idaho

Round-trip

One-way

Last minute

Cheap round-trip flights

12:59 am - 11:06 amONT-GEG

10h 07m1 stop

11:58 am - 11:50 pmGEG-ONT

11h 52m1 stop

$208Frontier

Find Deal

lun., ago. 11 - dom., ago. 17

5:21 pm - 11:46 amONT-BOI

17h 25m1 stop

12:36 pm - 11:50 pmBOI-ONT

12h 14m1 stop

$215Frontier

Find Deal

mié., ago. 13 - dom., ago. 17

3:04 pm - 8:05 pmONT-GEG

5h 01m1 stop

1:40 pm - 6:47 pmGEG-ONT

5h 07m1 stop

$228Alaska Airlines

Find Deal

dom., ago. 31 - mié., sep. 10

11:40 am - 4:49 pmONT-GEG

5h 09m1 stop

5:00 am - 10:50 amGEG-ONT

5h 50m1 stop

$229Delta

Find Deal

dom., ago. 31 - sáb., sep. 6

1:25 pm - 9:00 pmONT-GEG

7h 35m1 stop

2:00 pm - 6:00 pmGEG-ONT

4h 00m1 stop

$235Southwest

Find Deal

sáb., ago. 30 - sáb., sep. 6

6:00 am - 1:06 pmONT-BOI

6h 06m1 stop

5:43 pm - 11:42 pmBOI-ONT

6h 59m1 stop

$235Delta

Find Deal

lun., ago. 25 - lun., sep. 15

7:10 am - 11:44 amONT-GEG

4h 34m1 stop

8:51 pm - 10:44 amGEG-ONT

13h 53m1 stop

$236Alaska Airlines

Find Deal

sáb., sep. 6 - mié., sep. 10

2:35 pm - 10:25 pmONT-BOI

6h 50m2 stops

5:45 pm - 8:25 pmBOI-ONT

3h 40m1 stop

$240Southwest

Find Deal

mié., ago. 27 - lun., sep. 15

5:10 am - 1:15 pmONT-WYS

7h 05m1 stop

1:51 pm - 8:43 pmWYS-ONT

7h 52m1 stop

$283United Airlines

Find Deal

dom., sep. 14 - jue., sep. 18

5:10 am - 1:15 pmONT-WYS

7h 05m1 stop

11:55 am - 5:29 pmWYS-ONT

6h 34m1 stop

$292United Airlines

Find Deal

lun., ago. 25 - vie., ago. 29

American Airlines flights from Ontario to Idaho

Our best American Airlines deals on Ontario to Idaho flight tickets

American Airlines

Sep 30

ONT4:45 pmOntario

19h 32m

1 stop

BOI1:17 pmBoise Air Term. Gowen Fld

Oct 7

BOI4:40 pmBoise Air Term. Gowen Fld

20h 21m

1 stop

ONT12:01 pmOntario

$223

Find similar

American Airlines

Sep 28

ONT4:45 pmOntario

5h 50m

1 stop

BOI11:35 pmBoise Air Term. Gowen Fld

Oct 2

BOI5:22 pmBoise Air Term. Gowen Fld

5h 26m

1 stop

ONT9:48 pmOntario

$301

Find similar

American Airlines

Aug 15

ONT12:22 pmOntario

6h 48m

1 stop

BOI8:10 pmBoise Air Term. Gowen Fld

Aug 19

BOI6:35 amBoise Air Term. Gowen Fld

10h 49m

1 stop

ONT4:24 pmOntario

$315

Find similar

Hawaiian Airlines flights from Ontario to Idaho

Our best Hawaiian Airlines deals on Ontario to Idaho flight tickets

Hawaiian Airlines

Sep 5

ONT3:06 pmOntario

6h 44m

1 stop

BOI10:50 pmBoise Air Term. Gowen Fld

Sep 12

BOI7:17 pmBoise Air Term. Gowen Fld

5h 46m

1 stop

ONT12:03 amOntario

$234

Find similar

Hawaiian Airlines

Sep 19

ONT5:49 pmOntario

5h 10m

1 stop

BOI11:59 pmBoise Air Term. Gowen Fld

Sep 21

BOI6:00 amBoise Air Term. Gowen Fld

4h 26m

1 stop

ONT9:26 amOntario

$298

Find similar

Hawaiian Airlines

Aug 22

ONT3:04 pmOntario

6h 36m

1 stop

BOI10:40 pmBoise Air Term. Gowen Fld

Aug 24

BOI7:17 pmBoise Air Term. Gowen Fld

5h 42m

1 stop

ONT11:59 pmOntario

$306

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OntarioSpokane

ONT - GEG

ONTGEG

Ontario

lun. 8/11

12:59 am-11:06 am

1 stop10h 07m

Spokane

dom. 8/17

11:58 am-11:50 pm

1 stop11h 52m

$208

OntarioBoise

ONT - BOI

ONTBOI

Ontario

mié. 8/13

5:21 pm-11:46 am

1 stop17h 25m

Boise Air Term. Gowen Fld

dom. 8/17

12:36 pm-11:50 pm

1 stop12h 14m

$215

OntarioSpokane

ONT - GEG

ONTGEG

Ontario

dom. 8/31

3:04 pm-8:05 pm

1 stop5h 01m

Spokane

mié. 9/10

1:40 pm-6:47 pm

1 stop5h 07m

$228

OntarioSpokane

ONT - GEG

ONTGEG

Ontario

dom. 8/31

11:40 am-4:49 pm

1 stop5h 09m

Spokane

sáb. 9/6

5:00 am-10:50 am

1 stop5h 50m

$229

OntarioSpokane

ONT - GEG

ONTGEG

Ontario

sáb. 8/30

1:25 pm-9:00 pm

1 stop7h 35m

Spokane

sáb. 9/6

2:00 pm-6:00 pm

1 stop4h 00m

$235

OntarioBoise

ONT - BOI

ONTBOI

Ontario

lun. 8/25

6:00 am-1:06 pm

1 stop6h 06m

Boise Air Term. Gowen Fld

lun. 9/15

5:43 pm-11:42 pm

1 stop6h 59m

$235

OntarioSpokane

ONT - GEG

ONTGEG

Ontario

sáb. 9/6

7:10 am-11:44 am

1 stop4h 34m

Spokane

mié. 9/10

8:51 pm-10:44 am

1 stop13h 53m

$236

OntarioBoise

ONT - BOI

ONTBOI

Ontario

mié. 8/27

2:35 pm-10:25 pm

2 stops6h 50m

Boise Air Term. Gowen Fld

lun. 9/15

5:45 pm-8:25 pm

1 stop3h 40m

$240

OntarioWest Yellowstone

ONT - WYS

ONTWYS

Ontario

dom. 9/14

5:10 am-1:15 pm

1 stop7h 05m

West Yellowstone

jue. 9/18

1:51 pm-8:43 pm

1 stop7h 52m

$283

OntarioWest Yellowstone

ONT - WYS

ONTWYS

Ontario

lun. 8/25

5:10 am-1:15 pm

1 stop7h 05m

West Yellowstone

vie. 8/29

11:55 am-5:29 pm

1 stop6h 34m

$292

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 $278.

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 $311. On the other hand, Friday 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 $357.

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 evening. momondo users have found flights departing from Ontario to Idaho in the evening for as low as $285. 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 $322 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 $197 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	$88
Fastest flight time	2h 17m
Direct flights	Thu and Fri
Airports in Idaho	7 airports

The best one-way flight to Idaho from Ontario in the past 72 hours is $88. The best round-trip flight deal from Ontario to Idaho found on momondo in the last 72 hours is $208.

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

Direct flights go from Ontario to Idaho on Thursday and Friday. The only airline offering direct flights is Alaska Airlines.

There are 7 airports near Idaho: West Yellowstone (WYS), Twin Falls Joslin (TWF), Idaho Falls Fanning Field (IDA), Spokane (GEG), Boise Air Term. Gowen Fld (BOI), Jackson Hole (JAC), Hailey Sun Valley-Friedman (SUN)

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 July 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.

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 8.0 7,981 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 $233	Free Cancellation	Rating 7.4 8,900 reviews	Search United Airlines flights
Southwest	PriceFrom $239	Free Cancellation	Rating 8.0 4,246 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.