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Ontario

$77+ Cheap flights from Boise to Ontario (BOI - ONT)

BOI — ONT
Nov 21 — Nov 281
Sat 11/21
Sat 11/28
1 adult, Economy
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Find cheap flights from Boise to Ontario 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.

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Cheapflights Tip: The best prices from Boise Air Term. Gowen Fld to Ontario are usually found in January or April, booked 60 days in advance, depart on a Monday or Tuesday and return on a Tuesday

Cheap flight deals from Boise to Ontario

Cheapest flights from Boise to Ontario

Sat 11/217:55 pm -
1 stop16h 44m
Tue 11/244:13 pm -
1 stop25h 47m
Deal found 10/21$131
Sun 11/227:55 pm -
1 stop12h 25m
Wed 11/252:01 pm -
1 stop3h 59m
Deal found 10/21$140
Thu 11/122:49 pm -
1 stop21h 27m
Sat 11/212:01 pm -
1 stop3h 59m
Deal found 10/22$157
Fri 12/255:33 pm -
1 stop5h 20m
Thu 12/3110:30 pm -
1 stop17h 18m
Deal found 10/20$180
Sat 12/55:30 am -
1 stop6h 50m
Thu 12/105:45 am -
1 stop4h 00m
Deal found 10/21$195
Tue 11/173:45 pm -
1 stop5h 55m
Wed 11/183:20 pm -
2 stops6h 30m
Deal found 10/21$200
Mon 12/76:45 pm -
1 stop6h 12m
Tue 12/86:00 am -
1 stop3h 44m
Deal found 10/19$204
Sat 12/53:40 pm -
Nonstop2h 16m
Tue 12/85:36 pm -
Nonstop2h 05m
Deal found 10/21$207
Sat 12/53:40 pm -
Nonstop2h 16m
Thu 12/1011:23 am -
1 stop4h 57m
Deal found 10/21$212
Wed 12/305:33 pm -
1 stop5h 20m
Sun 1/102:26 pm -
1 stop4h 23m
Deal found 10/20$215

Find flight deals from Boise to Ontario

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$131
(Cheapflightsfares)

One-way from

$77
(Kiwi.com)

Popular in

March

Cheapest in

January

Average price

$287

Good round-trip deal

$277 or less

Good one-way deal

$194 or less
Provider with most accurate pricing for Boise Air Term. Gowen Fld-Ontario flight deals.
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Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-Ontario flights.
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From Boise Air Term. Gowen Fld to Ontario
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One-way flight from Boise Air Term. Gowen Fld to Ontario
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($29 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in October 2026
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Price to beat on a round-trip flight from Boise Air Term. Gowen Fld to Ontario.
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Price to beat on a one-way flight from Boise Air Term. Gowen Fld to Ontario.
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Boise to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BoiseOntario

BOI Boise Air Term. Gowen Fld - ONT Ontario

BOIONT

Boise Air Term. Gowen Fld

Wed 12/2

6:45 pm-11:57 pm

1 stop6h 12m

Ontario

Wed 12/31

12:00 am-1:00 am

Nonstop0h 00m

$98

BoiseOntario

BOI Boise Air Term. Gowen Fld - ONT Ontario

BOIONT

Boise Air Term. Gowen Fld

Fri 11/13

5:35 pm-11:00 pm

1 stop6h 25m

Ontario

Wed 12/31

12:00 am-1:00 am

Nonstop0h 00m

$134

BoiseOntario

BOI Boise Air Term. Gowen Fld - ONT Ontario

BOIONT

Boise Air Term. Gowen Fld

Wed 10/28

12:20 pm-4:20 pm

1 stop5h 00m

Ontario

Wed 12/31

12:00 am-1:00 am

Nonstop0h 00m

$147

BoiseOntario

BOI Boise Air Term. Gowen Fld - ONT Ontario

BOIONT

Boise Air Term. Gowen Fld

Wed 11/4

7:20 am-12:50 pm

1 stop6h 30m

Ontario

Wed 12/31

12:00 am-1:00 am

Nonstop0h 00m

$147

BoiseOntario

BOI Boise Air Term. Gowen Fld - ONT Ontario

BOIONT

Boise Air Term. Gowen Fld

Fri 12/18

5:33 pm-9:53 pm

1 stop5h 20m

Ontario

Wed 12/31

12:00 am-1:00 am

Nonstop0h 00m

$150

BoiseOntario

BOI Boise Air Term. Gowen Fld - ONT Ontario

BOIONT

Boise Air Term. Gowen Fld

Fri 10/30

6:00 am-8:55 am

1 stop3h 55m

Ontario

Wed 12/31

12:00 am-1:00 am

Nonstop0h 00m

$162

BoiseOntario

BOI Boise Air Term. Gowen Fld - ONT Ontario

BOIONT

Boise Air Term. Gowen Fld

Mon 11/2

3:55 pm-7:50 pm

1 stop4h 55m

Ontario

Wed 12/31

12:00 am-1:00 am

Nonstop0h 00m

$162

BoiseOntario

BOI Boise Air Term. Gowen Fld - ONT Ontario

BOIONT

Boise Air Term. Gowen Fld

Wed 12/16

6:15 am-12:34 pm

1 stop7h 19m

Ontario

Wed 12/31

12:00 am-1:00 am

Nonstop0h 00m

$197

BoiseOntario

BOI Boise Air Term. Gowen Fld - ONT Ontario

BOIONT

Boise Air Term. Gowen Fld

Wed 11/25

3:10 pm-8:55 pm

2 stops6h 45m

Ontario

Wed 12/31

12:00 am-1:00 am

Nonstop0h 00m

$204
Quickest round-trip

BoiseOntario

BOI Boise Air Term. Gowen Fld - ONT Ontario

BOIONT

Boise Air Term. Gowen Fld

Mon 1/4

9:04 pm-10:14 pm

Nonstop2h 10m

Ontario

Wed 12/31

12:00 am-1:00 am

Nonstop0h 00m

$209

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/21

Showing 1-10 of 22 resultsSorted by cheapest first
1
2
3

Compare providers for flights from Boise to Ontario

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boise to Ontario in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*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 Boise-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boise-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boise-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Boise-Ontario 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 Boise-Ontario 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 Boise to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Boise with our price prediction graph.
Estimated round-trip price

Cheapflights Insights

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

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

The best time to book flights from Boise to Ontario is 35 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 Boise to Ontario?

Currently, January is the cheapest month in which you can book a flight from Boise to Ontario (average of $227). Flying from Boise to Ontario in March is currently the most expensive (average of $447). 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 BOI to ONT?

When flying from Boise to Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

Airfare is below average for this route at the moment.

Boise to Ontario flights typically cost between $230 and $422 in November.
The cheapest round-trip price found within the last 5 days was $131 on Frontier (Nov 21-Nov 24).

Reviews of airlines servicing Ontario

See what other customers who have flown with Alaska Airlines,Southwest, andDelta from Boise to Ontario have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
7.9
Good
13,108 reviews

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Food

7.0

Overall

7.9

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Chris,Aug 2026

GEG - SFO

Our flight was delayed multiple times over the course of the day for a total of almost ten hours. It was supposed to be a two-hour flight from San Francisco to Spokane. It turned into a nightmare of waiting all day in the airport, not knowing whether we would fly or not, whether we would miss my son's wedding and lose the expenses already incurred for car rental and accommodations. The Alaska staff seemed clueless and never gave us any convincing or definitive information. The airline offered food vouchers and discounts on future flights to make up for the trouble. However, the information about these concessions was not timely, nor were the vouchers themselves very useful. We were a family group of four people. The airline decided to give us one food voucher for $96, which is barely enough for four to get a sandwich and a drink each. Only by persistently addressing the airport food retailers were we able to get anything at all. Then, taking the exact opposite approach, the airline sent me, the original purchaser of all four tickets and the only email account they had, four vouchers for $150 each in the names of each of the four passengers. So, any one of us could get a discount on a future flight with Alaska in that amount. But I originally paid for all the tickets. It makes no sense, except to suggest that Alaska chooses the way to distribute vouchers that seems most likely to minimize the probability that they will be utilized. In my opinion, I should be offered a total refund for the ordeal we were forced to endure or at least a discount voucher for the entire $600.
Alaska Airlines
7.9
Good
13,108 reviews
Alaska Airlines
7.9
Good
13,108 reviews

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Food

7.0

Overall

7.9

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Chris,Aug 2026

GEG - SFO

Our flight was delayed multiple times over the course of the day for a total of almost ten hours. It was supposed to be a two-hour flight from San Francisco to Spokane. It turned into a nightmare of waiting all day in the airport, not knowing whether we would fly or not, whether we would miss my son's wedding and lose the expenses already incurred for car rental and accommodations. The Alaska staff seemed clueless and never gave us any convincing or definitive information. The airline offered food vouchers and discounts on future flights to make up for the trouble. However, the information about these concessions was not timely, nor were the vouchers themselves very useful. We were a family group of four people. The airline decided to give us one food voucher for $96, which is barely enough for four to get a sandwich and a drink each. Only by persistently addressing the airport food retailers were we able to get anything at all. Then, taking the exact opposite approach, the airline sent me, the original purchaser of all four tickets and the only email account they had, four vouchers for $150 each in the names of each of the four passengers. So, any one of us could get a discount on a future flight with Alaska in that amount. But I originally paid for all the tickets. It makes no sense, except to suggest that Alaska chooses the way to distribute vouchers that seems most likely to minimize the probability that they will be utilized. In my opinion, I should be offered a total refund for the ordeal we were forced to endure or at least a discount voucher for the entire $600.
Southwest
7.9
Good
4,210 reviews
Alaska Airlines
7.9
Good
13,108 reviews

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Food

7.0

Overall

7.9

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Chris,Aug 2026

GEG - SFO

Our flight was delayed multiple times over the course of the day for a total of almost ten hours. It was supposed to be a two-hour flight from San Francisco to Spokane. It turned into a nightmare of waiting all day in the airport, not knowing whether we would fly or not, whether we would miss my son's wedding and lose the expenses already incurred for car rental and accommodations. The Alaska staff seemed clueless and never gave us any convincing or definitive information. The airline offered food vouchers and discounts on future flights to make up for the trouble. However, the information about these concessions was not timely, nor were the vouchers themselves very useful. We were a family group of four people. The airline decided to give us one food voucher for $96, which is barely enough for four to get a sandwich and a drink each. Only by persistently addressing the airport food retailers were we able to get anything at all. Then, taking the exact opposite approach, the airline sent me, the original purchaser of all four tickets and the only email account they had, four vouchers for $150 each in the names of each of the four passengers. So, any one of us could get a discount on a future flight with Alaska in that amount. But I originally paid for all the tickets. It makes no sense, except to suggest that Alaska chooses the way to distribute vouchers that seems most likely to minimize the probability that they will be utilized. In my opinion, I should be offered a total refund for the ordeal we were forced to endure or at least a discount voucher for the entire $600.
Delta
7.8
Good
8,661 reviews
Alaska Airlines
7.9
Good
13,108 reviews

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Food

7.0

Overall

7.9

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Chris,Aug 2026

GEG - SFO

Our flight was delayed multiple times over the course of the day for a total of almost ten hours. It was supposed to be a two-hour flight from San Francisco to Spokane. It turned into a nightmare of waiting all day in the airport, not knowing whether we would fly or not, whether we would miss my son's wedding and lose the expenses already incurred for car rental and accommodations. The Alaska staff seemed clueless and never gave us any convincing or definitive information. The airline offered food vouchers and discounts on future flights to make up for the trouble. However, the information about these concessions was not timely, nor were the vouchers themselves very useful. We were a family group of four people. The airline decided to give us one food voucher for $96, which is barely enough for four to get a sandwich and a drink each. Only by persistently addressing the airport food retailers were we able to get anything at all. Then, taking the exact opposite approach, the airline sent me, the original purchaser of all four tickets and the only email account they had, four vouchers for $150 each in the names of each of the four passengers. So, any one of us could get a discount on a future flight with Alaska in that amount. But I originally paid for all the tickets. It makes no sense, except to suggest that Alaska chooses the way to distribute vouchers that seems most likely to minimize the probability that they will be utilized. In my opinion, I should be offered a total refund for the ordeal we were forced to endure or at least a discount voucher for the entire $600.
United Airlines
7.3
Good
10,404 reviews
Alaska Airlines
7.9
Good
13,108 reviews

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Food

7.0

Overall

7.9

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Chris,Aug 2026

GEG - SFO

Our flight was delayed multiple times over the course of the day for a total of almost ten hours. It was supposed to be a two-hour flight from San Francisco to Spokane. It turned into a nightmare of waiting all day in the airport, not knowing whether we would fly or not, whether we would miss my son's wedding and lose the expenses already incurred for car rental and accommodations. The Alaska staff seemed clueless and never gave us any convincing or definitive information. The airline offered food vouchers and discounts on future flights to make up for the trouble. However, the information about these concessions was not timely, nor were the vouchers themselves very useful. We were a family group of four people. The airline decided to give us one food voucher for $96, which is barely enough for four to get a sandwich and a drink each. Only by persistently addressing the airport food retailers were we able to get anything at all. Then, taking the exact opposite approach, the airline sent me, the original purchaser of all four tickets and the only email account they had, four vouchers for $150 each in the names of each of the four passengers. So, any one of us could get a discount on a future flight with Alaska in that amount. But I originally paid for all the tickets. It makes no sense, except to suggest that Alaska chooses the way to distribute vouchers that seems most likely to minimize the probability that they will be utilized. In my opinion, I should be offered a total refund for the ordeal we were forced to endure or at least a discount voucher for the entire $600.
Frontier
5.5
Fair
2,519 reviews
Alaska Airlines
7.9
Good
13,108 reviews

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Food

7.0

Overall

7.9

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Chris,Aug 2026

GEG - SFO

Our flight was delayed multiple times over the course of the day for a total of almost ten hours. It was supposed to be a two-hour flight from San Francisco to Spokane. It turned into a nightmare of waiting all day in the airport, not knowing whether we would fly or not, whether we would miss my son's wedding and lose the expenses already incurred for car rental and accommodations. The Alaska staff seemed clueless and never gave us any convincing or definitive information. The airline offered food vouchers and discounts on future flights to make up for the trouble. However, the information about these concessions was not timely, nor were the vouchers themselves very useful. We were a family group of four people. The airline decided to give us one food voucher for $96, which is barely enough for four to get a sandwich and a drink each. Only by persistently addressing the airport food retailers were we able to get anything at all. Then, taking the exact opposite approach, the airline sent me, the original purchaser of all four tickets and the only email account they had, four vouchers for $150 each in the names of each of the four passengers. So, any one of us could get a discount on a future flight with Alaska in that amount. But I originally paid for all the tickets. It makes no sense, except to suggest that Alaska chooses the way to distribute vouchers that seems most likely to minimize the probability that they will be utilized. In my opinion, I should be offered a total refund for the ordeal we were forced to endure or at least a discount voucher for the entire $600.

Related info for your journey

  • How popular is this Boise to Ontario flight route?

    Within the past month, 1 users have taken a look at flights from Boise Air Term. Gowen Fld to Ontario.

  • How long is the flight from Boise to Ontario?

    A quick flight from Boise to Ontario can take about 4h 38m. Southwest provides one of the quickest options available for as low as $340. Boise and Ontario are separated by a distance of 661 mi. This flight may include one or multiple stops.

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

    According to our current data, Frontier ($117), Alaska Airlines ($137), and Southwest ($216) offers the cheapest pricing from Boise to Ontario. Frontier is 63% cheaper than the average price of flights available within the next 90 days to this destination.

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

    The cheapest airlines for a one-way flight from Boise to Ontario are Delta ($78), United Airlines ($98), and Southwest ($108).

  • What are the most reliable airlines from Boise to Ontario?

    No one likes to see their flight delayed. When booking a flight from Boise to Ontario consider choosing Horizon Air (90%), Alaska Airlines (83%) or SkyWest Airlines (75%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Boise to Ontario?

    On average you can expect to pay $235 for a flight from Boise to Ontario. The cheapest flight overall is $133 while the most popular route, (Boise Air Term. Gowen Fld - Ontario) is currently priced at $140.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Boise to Ontario 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 Boise to Ontario?

    Currently, January is the cheapest month in which you can book a flight from Boise to Ontario (average of $227). Flying from Boise to Ontario in March is currently the most expensive (average of $447). 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

Browse thousands of different options on Cheapflights for your next trip

Top 5 airlines flying from Boise to Ontario

AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$117Average$242FlexibilityNo cancel feeOn-time62%
Alaska AirlinesCheapest$137Average$280FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$216Average$358FlexibilityNo cancel feeOn-time63%
DeltaCheapest$236Average$478FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$267Average$306FlexibilityNo cancel feeOn-time69%

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