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 30% 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?

Frontier, Alaska Airlines, and Hawaiian Airlines 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 November 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.

$81 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

Enter your travel dates to find the best prices.

7:56 pm - 10:57 pmONT-BOI

2h 01mnonstop

6:09 pm - 7:16 pmBOI-ONT

2h 07mnonstop

$136Alaska Airlines

Find Deal

mié., ene. 7 - mié., ene. 14

7:37 pm - 10:36 pmONT-BOI

1h 59mnonstop

6:07 pm - 7:14 pmBOI-ONT

2h 07mnonstop

$137Alaska Airlines

Find Deal

sáb., feb. 28 - mar., mar. 3

3:30 pm - 9:56 pmONT-BOI

5h 26m1 stop

7:30 am - 1:54 pmBOI-ONT

7h 24m1 stop

$147Delta

Find Deal

sáb., feb. 28 - mar., mar. 3

8:30 am - 2:20 pmONT-BOI

4h 50m1 stop

7:45 am - 2:45 pmBOI-ONT

8h 00m1 stop

$151Southwest

Find Deal

mar., ene. 6 - mié., ene. 7

6:05 am - 12:25 pmONT-BOI

5h 20m1 stop

10:45 am - 4:05 pmBOI-ONT

6h 20m1 stop

$169Southwest

Find Deal

mié., ene. 7 - jue., ene. 8

6:15 am - 11:59 amONT-IDA

4h 44m1 stop

8:16 pm - 9:17 pmIDA-ONT

26h 01m1 stop

$196Multiple Airlines

Find Deal

sáb., dic. 13 - lun., dic. 15

1:10 pm - 10:52 pmONT-GEG

9h 42m2 stops

6:05 am - 1:56 pmGEG-ONT

7h 51m1 stop

$212Delta

Find Deal

jue., ene. 8 - lun., ene. 12

10:18 am - 8:30 pmONT-IDA

9h 12m2 stops

9:20 pm - 12:42 pmIDA-ONT

16h 22m1 stop

$228Multiple Airlines

Find Deal

vie., feb. 6 - lun., feb. 9

5:05 am - 1:37 pmONT-SUN

7h 32m1 stop

2:21 pm - 5:37 pmSUN-ONT

4h 16m1 stop

$269United Airlines

Find Deal

mié., dic. 10 - dom., dic. 14

1:34 pm - 8:53 pmONT-JAC

6h 19m1 stop

7:00 am - 5:47 pmJAC-ONT

11h 47m2 stops

$272United Airlines

Find Deal

vie., abr. 10 - mar., abr. 14

Hawaiian Airlines flights from Ontario to Idaho

Our best Hawaiian Airlines deals on Ontario to Idaho flight tickets

Hawaiian Airlines

Feb 28

ONT7:00 amOntario

5h 17m

1 stop

BOI1:17 pmBoise Air Term. Gowen Fld

Mar 3

BOI8:20 pmBoise Air Term. Gowen Fld

4h 32m

1 stop

ONT11:52 pmOntario

$176

Find similar

Hawaiian Airlines

Jan 8

ONT11:53 amOntario

5h 13m

1 stop

GEG5:06 pmSpokane

Jan 12

GEG5:45 amSpokane

5h 14m

1 stop

ONT10:59 amOntario

$206

Find similar

Hawaiian Airlines

Jan 8

ONT11:53 amOntario

5h 25m

1 stop

IDA6:18 pmIdaho Falls Fanning Field

Jan 12

IDA6:58 pmIdaho Falls Fanning Field

5h 58m

1 stop

ONT11:56 pmOntario

$304

Find similar

Alaska Airlines flights from Ontario to Idaho

Our best Alaska Airlines deals on Ontario to Idaho flight tickets

Alaska Airlines

Jan 7

ONT7:56 pmOntario

2h 01m

BOI10:57 pmBoise Air Term. Gowen Fld

Jan 14

BOI6:09 pmBoise Air Term. Gowen Fld

2h 07m

ONT7:16 pmOntario

$136

Find similar

Alaska Airlines

Feb 28

ONT7:37 pmOntario

1h 59m

BOI10:36 pmBoise Air Term. Gowen Fld

Mar 3

BOI6:07 pmBoise Air Term. Gowen Fld

2h 07m

ONT7:14 pmOntario

$137

Find similar

Alaska Airlines

Feb 11

ONT1:46 pmOntario

5h 23m

1 stop

BOI8:09 pmBoise Air Term. Gowen Fld

Feb 18

BOI6:07 pmBoise Air Term. Gowen Fld

2h 07m

ONT7:14 pmOntario

$155

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OntarioBoise

ONT - BOI

ONTBOI

Ontario

mié. 1/7

7:56 pm-10:57 pm

Nonstop2h 01m

Boise Air Term. Gowen Fld

mié. 1/14

6:09 pm-7:16 pm

Nonstop2h 07m

$136

OntarioBoise

ONT - BOI

ONTBOI

Ontario

sáb. 2/28

7:37 pm-10:36 pm

Nonstop1h 59m

Boise Air Term. Gowen Fld

mar. 3/3

6:07 pm-7:14 pm

Nonstop2h 07m

$137

OntarioBoise

ONT - BOI

ONTBOI

Ontario

sáb. 2/28

3:30 pm-9:56 pm

1 stop5h 26m

Boise Air Term. Gowen Fld

mar. 3/3

7:30 am-1:54 pm

1 stop7h 24m

$147

OntarioBoise

ONT - BOI

ONTBOI

Ontario

mar. 1/6

8:30 am-2:20 pm

1 stop4h 50m

Boise Air Term. Gowen Fld

mié. 1/7

7:45 am-2:45 pm

1 stop8h 00m

$151

OntarioBoise

ONT - BOI

ONTBOI

Ontario

mié. 1/7

6:05 am-12:25 pm

1 stop5h 20m

Boise Air Term. Gowen Fld

jue. 1/8

10:45 am-4:05 pm

1 stop6h 20m

$169

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

sáb. 12/13

6:15 am-11:59 am

1 stop4h 44m

Idaho Falls Fanning Field

lun. 12/15

8:16 pm-9:17 pm

1 stop26h 01m

$196

OntarioSpokane

ONT - GEG

ONTGEG

Ontario

jue. 1/8

1:10 pm-10:52 pm

2 stops9h 42m

Spokane

lun. 1/12

6:05 am-1:56 pm

1 stop7h 51m

$212

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

vie. 2/6

10:18 am-8:30 pm

2 stops9h 12m

Idaho Falls Fanning Field

lun. 2/9

9:20 pm-12:42 pm

1 stop16h 22m

$228

OntarioHailey

ONT - SUN

ONTSUN

Ontario

mié. 12/10

5:05 am-1:37 pm

1 stop7h 32m

Hailey Sun Valley-Friedman

dom. 12/14

2:21 pm-5:37 pm

1 stop4h 16m

$269

OntarioJackson

ONT - JAC

ONTJAC

Ontario

vie. 4/10

1:34 pm-8:53 pm

1 stop6h 19m

Jackson Hole

mar. 4/14

7:00 am-5:47 pm

2 stops11h 47m

$272

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 $234. 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 $243.

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.

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 $321 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 $210 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.

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	$171
Fastest flight time	1h 59m
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 $171

The fastest flight from Ontario to Idaho takes 1h 59m

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 November 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 Boeing 737-800 Passenger/BBJ2 (winglets) (34.48% of total bookings). The next most popular plane models are Embraer 175 (Enhanced Winglets) (27.59%), Embraer 175 (20.69%), and Embraer 170 (10.34%).

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 $158	Free Cancellation	Rating 7.9 8,003 reviews	Search Delta flights
Alaska Airlines	PriceFrom $171	Free Cancellation	Rating 8.0 11,363 reviews	Search Alaska Airlines flights
United Airlines	PriceFrom $196	Free Cancellation	Rating 7.4 9,050 reviews	Search United Airlines flights
Southwest	PriceFrom $234	Free Cancellation	Rating 8.0 4,254 reviews	Search Southwest flights
American Airlines	PriceFrom $258	Free Cancellation	Rating 7.2 11,037 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.