Idaho

$108+ Cheap flights from Ontario (ONT) to Idaho

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/6. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BOI
Feb 16 — Feb 231
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Find cheap flights from Ontario to Idaho with Cheapflights

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Cheap flight deals from Ontario to Idaho

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Idaho (USID). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 11, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$216
(Hawaiian Airlines)

One-way from

$108
(Alaska Airlines)

Popular in

December

Cheapest in

October

Average price

$267
Provider with most accurate pricing for Los Angeles-Boise Air Term. Gowen Fld flight deals.
Provider most trusted by Cheapflights users for Los Angeles-Boise Air Term. Gowen Fld flights.
From Ontario to Idaho
One-way flight from Ontario to Idaho
Highest demand for flights based on searches. 13% potential increase in price ($42 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($10 potential savings vs. average RT price).
Average for round-trip flights in February 2025

Find flight deals from Ontario to Idaho

Cheapest flights from Ontario to Idaho
Explore the most affordable flight options available from Ontario to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 11, 2025.

This Hawaiian Airlines deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/116:00 amONT - BOI
1 stop6h 51mHawaiian Airlines
Tue 3/182:46 pmBOI - ONT
1 stop7h 41mHawaiian Airlines
Deal found 2/10$216
This Alaska Airlines deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/34:29 pmONT - GEG
1 stop5h 29mAlaska Airlines
Sat 5/106:00 amGEG - ONT
1 stop4h 51mAlaska Airlines
Deal found 2/11$220
This Delta deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/46:00 amONT - GEG
1 stop4h 45mDelta
Wed 3/53:25 pmGEG - ONT
1 stop7h 07mDelta
Deal found 2/11$221
This United Airlines deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/125:05 amONT - GEG
1 stop7h 38mUnited Airlines
Thu 3/131:46 pmGEG - ONT
1 stop7h 11mUnited Airlines
Deal found 2/10$231
This Alaska Airlines deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/109:56 amONT - BOI
1 stop5h 45mAlaska Airlines
Tue 5/136:03 amBOI - ONT
1 stop4h 13mAlaska Airlines
Deal found 2/11$236
This Delta deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/175:30 pmONT - BOI
1 stop5h 16mDelta
Sat 3/221:05 pmBOI - ONT
1 stop4h 29mDelta
Deal found 2/10$237
This Southwest deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/106:25 pmONT - GEG
1 stop4h 10mSouthwest
Mon 3/172:55 pmGEG - ONT
2 stops8h 25mSouthwest
Deal found 2/11$246
This Southwest deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/205:20 pmONT - BOI
1 stop6h 25mSouthwest
Wed 3/266:35 amBOI - ONT
1 stop4h 20mSouthwest
Deal found 2/11$255
This Delta deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/61:21 pmONT - JAC
1 stop4h 41mDelta
Wed 3/121:25 pmJAC - ONT
1 stop4h 09mDelta
Deal found 2/9$267
This Delta deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/135:15 pmONT - IDA
1 stop4h 18mDelta
Sun 3/166:55 pmIDA - ONT
1 stop6h 01mDelta
Deal found 2/10$277
This Delta deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/165:40 amONT - SUN
1 stop6h 25mDelta
Thu 3/2012:55 pmSUN - ONT
1 stop4h 39mDelta
Deal found 2/9$277
This Hawaiian Airlines deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/27:00 amONT - GEG
1 stop4h 50mHawaiian Airlines
Fri 10/35:45 pmGEG - ONT
1 stop4h 52mHawaiian Airlines
Deal found 2/10$280

Find flights from Ontario to Idaho within your budget

Customize your flight search to find flights from Ontario to Idaho that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 11, 2025.

Fly from

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Fly to

Any airport

Route

Depart

Return

Price

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Tue 3/11

6:00 am-1:51 pm

1 stop6h 51m

Boise Air Term. Gowen Fld

Tue 3/18

2:46 pm-9:27 pm

1 stop7h 41m

$216

OntarioSpokane

ONT - GEG

ONTGEG

Ontario

Sat 5/3

4:29 pm-9:58 pm

1 stop5h 29m

Spokane

Sat 5/10

6:00 am-10:51 am

1 stop4h 51m

$220

OntarioSpokane

ONT - GEG

ONTGEG

Ontario

Tue 3/4

6:00 am-10:45 am

1 stop4h 45m

Spokane

Wed 3/5

3:25 pm-10:32 pm

1 stop7h 07m

$221

OntarioSpokane

ONT - GEG

ONTGEG

Ontario

Wed 3/12

5:05 am-12:43 pm

1 stop7h 38m

Spokane

Thu 3/13

1:46 pm-8:57 pm

1 stop7h 11m

$231

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Sat 5/10

9:56 am-4:41 pm

1 stop5h 45m

Boise Air Term. Gowen Fld

Tue 5/13

6:03 am-9:16 am

1 stop4h 13m

$236

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Mon 3/17

5:30 pm-11:46 pm

1 stop5h 16m

Boise Air Term. Gowen Fld

Sat 3/22

1:05 pm-4:34 pm

1 stop4h 29m

$237

OntarioSpokane

ONT - GEG

ONTGEG

Ontario

Mon 3/10

6:25 pm-10:35 pm

1 stop4h 10m

Spokane

Mon 3/17

2:55 pm-11:20 pm

2 stops8h 25m

$246

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Thu 3/20

5:20 pm-12:45 am

1 stop6h 25m

Boise Air Term. Gowen Fld

Wed 3/26

6:35 am-9:55 am

1 stop4h 20m

$255

OntarioJackson

ONT - JAC

ONTJAC

Ontario

Thu 3/6

1:21 pm-7:02 pm

1 stop4h 41m

Jackson Hole

Wed 3/12

1:25 pm-4:34 pm

1 stop4h 09m

$267

OntarioIdaho Falls

ONT - IDA

ONTIDA

Ontario

Thu 3/13

5:15 pm-10:33 pm

1 stop4h 18m

Idaho Falls Fanning Field

Sun 3/16

6:55 pm-11:56 pm

1 stop6h 01m

$277

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/10

Showing 1-10 of 49 results
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Best time to book a flight from Ontario to Idaho

Have a flexible travel schedule? Discover the best time to fly to Idaho from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Ontario to Idaho

Get recent, data-driven insights about flights from Ontario to Idaho including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Ontario to Idaho?

Currently, October is the cheapest month in which you can book a flight from Ontario to Idaho (average of $314). Flying from Ontario to Idaho in June is currently the most expensive (average of $436). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ONT to ID?

Find hourly flight availability from Ontario to Idaho. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 11, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to Idaho as you normally would.

Rainfall in Idaho by month

Plan your trip to Idaho by taking into account the average rainfall totals by month.