Boise

$99+ Cheap flights from Ontario to Boise (ONT - BOI)

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 8/19. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BOI
Jul 10 — Jul 171
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ontario to Boise with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.
Cheapflights Tip: The best prices from Ontario to Boise Air Term. Gowen Fld are usually found in January or May, booked 87 days in advance, depart on a Tuesday or Monday and return on a Saturday

Cheap flight deals from Ontario to Boise

Cheapest flights from Ontario to Boise
Explore the most affordable flight options available from Ontario to Boise. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 10, 2026.

This CheapOair deal was found by Cheapflights users on 6/9. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/214:42 pm
ONT
-
BOI
Nonstop2h 00m
Alaska Airlines
Tue 10/272:51 pm
BOI
-
ONT
Nonstop2h 11m
Alaska Airlines
Deal found 6/9$177
This Priceline deal was found by Cheapflights users on 6/5. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/254:50 pm
ONT
-
BOI
Nonstop1h 55m
Alaska Airlines
Fri 9/43:02 pm
BOI
-
ONT
Nonstop2h 08m
Alaska Airlines
Deal found 6/5$187
This Priceline deal was found by Cheapflights users on 6/9. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/44:50 pm
ONT
-
BOI
Nonstop1h 55m
Alaska Airlines
Tue 9/83:02 pm
BOI
-
ONT
Nonstop2h 08m
Alaska Airlines
Deal found 6/9$197
This United Airlines deal was found by Cheapflights users on 6/7. 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 9/29:01 am
ONT
-
BOI
1 stop5h 30m
United Airlines
Sun 9/68:15 am
BOI
-
ONT
1 stop4h 57m
United Airlines
Deal found 6/7$207
This United Airlines deal was found by Cheapflights users on 6/8. 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.
Tue 8/189:01 am
ONT
-
BOI
1 stop5h 30m
United Airlines
Mon 8/247:05 pm
BOI
-
ONT
1 stop4h 54m
United Airlines
Deal found 6/8$210
This Delta deal was found by Cheapflights users on 6/8. 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 9/85:05 pm
ONT
-
BOI
1 stop3h 55m
Delta
Fri 9/115:45 pm
BOI
-
ONT
1 stop5h 59m
Delta
Deal found 6/8$215
This Priceline deal was found by Cheapflights users on 6/9. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/234:50 pm
ONT
-
BOI
Nonstop1h 55m
Alaska Airlines
Tue 9/13:02 pm
BOI
-
ONT
Nonstop2h 08m
Alaska Airlines
Deal found 6/9$217
This Delta deal was found by Cheapflights users on 6/9. 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 8/205:05 pm
ONT
-
BOI
1 stop5h 54m
Delta
Tue 8/256:00 am
BOI
-
ONT
1 stop3h 52m
Delta
Deal found 6/9$220
This Delta deal was found by Cheapflights users on 6/5. 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.
Fri 10/165:05 pm
ONT
-
BOI
1 stop5h 59m
Delta
Mon 10/191:15 pm
BOI
-
ONT
1 stop3h 57m
Delta
Deal found 6/5$227
This Southwest deal was found by Cheapflights users on 6/9. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/206:00 am
ONT
-
BOI
1 stop6h 15m
Southwest
Tue 8/252:20 pm
BOI
-
ONT
2 stops6h 45m
Southwest
Deal found 6/9$229
This United Airlines deal was found by Cheapflights users on 6/8. 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.
Mon 8/179:01 am
ONT
-
BOI
1 stop5h 30m
United Airlines
Mon 8/247:05 pm
BOI
-
ONT
1 stop4h 54m
United Airlines
Deal found 6/8$230
This Priceline deal was found by Cheapflights users on 6/9. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/154:18 pm
ONT
-
BOI
Nonstop1h 55m
Alaska Airlines
Wed 8/193:02 pm
BOI
-
ONT
Nonstop2h 08m
Alaska Airlines
Deal found 6/9$232

Find flight deals from Ontario to Boise

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Boise (BOI). 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 June 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$177
(CheapOair)

One-way from

$99
(United Airlines)

Popular in

November

Cheapest in

January

Average price

$367

Good round-trip deal

$355 or less

Good one-way deal

$212 or less
Provider with most accurate pricing for Ontario-Boise Air Term. Gowen Fld flight deals.
Provider most trusted by Cheapflights users for Ontario-Boise Air Term. Gowen Fld flights.
From Ontario to Boise Air Term. Gowen Fld
One-way flight from Ontario to Boise Air Term. Gowen Fld
Highest demand for flights based on searches. 14% potential increase in price ($54 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($9 potential savings vs. average RT price).
Average for round-trip flights in June 2026
Price to beat on a round-trip flight from Ontario to Boise Air Term. Gowen Fld.
Price to beat on a one-way flight from Ontario to Boise Air Term. Gowen Fld.

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Boise 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 June 10, 2026.
Use the filters below to find and compare flights from Ontario to Boise that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Fri 8/14

5:05 pm-10:00 pm

1 stop3h 55m

Boise Air Term. Gowen Fld

Mon 8/17

6:45 pm-11:34 pm

1 stop5h 49m

$262

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Tue 10/6

4:42 pm-7:42 pm

Nonstop2h 00m

Boise Air Term. Gowen Fld

Wed 10/7

6:40 am-1:19 pm

1 stop7h 39m

$267
Quickest round-trip

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Tue 11/17

5:12 pm-8:12 pm

Nonstop2h 00m

Boise Air Term. Gowen Fld

Wed 11/18

1:51 pm-6:28 pm

1 stop5h 37m

$267

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Tue 11/17

1:33 pm-9:15 pm

1 stop6h 42m

Boise Air Term. Gowen Fld

Wed 11/18

6:20 am-12:20 pm

1 stop7h 00m

$277

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Mon 7/20

8:45 pm-1:50 am

1 stop4h 05m

Boise Air Term. Gowen Fld

Tue 7/21

5:30 am-9:15 am

1 stop4h 45m

$307

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Fri 8/7

1:06 pm-5:55 pm

1 stop3h 49m

Boise Air Term. Gowen Fld

Sun 8/9

6:00 am-8:52 am

1 stop3h 52m

$307

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Thu 7/16

6:30 pm-12:20 am

1 stop4h 50m

Boise Air Term. Gowen Fld

Mon 7/20

3:25 pm-8:20 pm

1 stop5h 55m

$307

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Sat 8/15

8:00 am-3:31 pm

1 stop6h 31m

Boise Air Term. Gowen Fld

Wed 8/19

6:15 am-12:12 pm

1 stop6h 57m

$312

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Sat 7/25

1:50 pm-9:40 pm

1 stop6h 50m

Boise Air Term. Gowen Fld

Mon 7/27

7:05 pm-10:37 pm

1 stop4h 32m

$322

OntarioBoise

ONT - BOI

ONTBOI

Ontario

Fri 7/3

6:35 pm-1:10 am

2 stops5h 35m

Boise Air Term. Gowen Fld

Fri 7/10

3:25 pm-8:20 pm

1 stop5h 55m

$342

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 24 resultsSorted by cheapest first
1
2
3

Compare providers for flights from Ontario to Boise

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Boise in June.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy2 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Ontario-Boise flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Boise flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Boise flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Boise flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Boise flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Ontario to Boise

Have a flexible travel schedule? Discover the best time to fly to Boise 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.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Boise

How far ahead should I book a flight from Ontario to Boise?

The best time to book flights from Ontario to Boise is 86 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, January is the cheapest month in which you can book a flight from Ontario to Boise (average of $177). Flying from Ontario to Boise in November is currently the most expensive (average of $402). 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 BOI?

Find hourly flight availability from Ontario to Boise. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 10, 2026.

It’s typically best to fly out from Ontario to Boise at noon. Doing so could potentially save you 62% on the flight price compared to flying in the morning, which is usually more expensive.

How much does it cost to fly round-trip from Ontario to Boise?

Reviews of airlines servicing Boise

Get insights into the airlines that provide service to Boise. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Boise. Reviews last updated June 10, 2026.
Get a feel of what it's like to fly with Alaska Airlines,Southwest, andDelta from Ontario to Boise by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Entertainment

7.0

Food

7.0

Overall

7.9

Boarding

8.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Franzi,Mar 2026

SFO - PDX

I love flying with Alaska. I think they sre the best airline.

Entertainment

7.0

Food

7.0

Overall

7.9

Boarding

8.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Franzi,Mar 2026

SFO - PDX

I love flying with Alaska. I think they sre the best airline.

Entertainment

7.0

Food

7.0

Overall

7.9

Boarding

8.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Franzi,Mar 2026

SFO - PDX

I love flying with Alaska. I think they sre the best airline.

Entertainment

7.0

Food

7.0

Overall

7.9

Boarding

8.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Franzi,Mar 2026

SFO - PDX

I love flying with Alaska. I think they sre the best airline.

Entertainment

7.0

Food

7.0

Overall

7.9

Boarding

8.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Franzi,Mar 2026

SFO - PDX

I love flying with Alaska. I think they sre the best airline.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Boise. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • How long is the flight from Ontario to Boise?

    Delta, Alaska Airlines, and United Airlines can get you from Ontario to Boise in just under 2h. Your travel time can differ by up to 4h 42m. Ontario and Boise are separated by a distance of 661 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Ontario to Boise round-trip?

    Currently priced at $117, Alaska Airlines will fly you from Ontario to Boise and back. In addition to Alaska Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Southwest and Delta - these airlines can fly you to your destination from $168 and $169, respectively. Users have found that Alaska Airlines is 62% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Ontario to Boise one-way?

    $108 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on United Airlines and Alaska Airlines, with prices starting from $108 and $108, respectively.

  • What are the cheapest flights from Ontario to Boise?

    Looking for the cheapest flight from Ontario to Boise? While on average our users pay $355, our data indicates the cheapest price to be $138. The most popular route (Ontario - Boise Air Term. Gowen Fld), is priced around $197.

  • Can I find deals for flights from Ontario to Boise that include hotel bookings?

    Yes. In addition to deals on Ontario to Boise flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Boise?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Boise.

  • Can I find deals for business class flights from Ontario to Boise?

    Yes. Cheapflights offers flight deals from Ontario to Boise by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, January is the cheapest month in which you can book a flight from Ontario to Boise (average of $177). Flying from Ontario to Boise in November is currently the most expensive (average of $402). 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.

See more FAQs

Traveling to a place near Boise?

Book flights to Boise if you plan to visit one of these locations
Meridian
Nampa
Caldwell
Ontario
McCall

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 4 airlines flying from Ontario to Boise

Discover the top 4 airlines that operate flights from Ontario to Boise. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$117Average$262FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$168Average$357FlexibilityNo cancel feeOn-time63%
DeltaCheapest$169Average$257FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$196Average$306FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.