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Cheap flights from Boise to Los Angeles from $73

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Boise to Los Angeles departing on 12/13. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
5:58 pm - 11:58 pmBOI-ONT
7h 00m1 stop
Delta Logo
6:40 am - 1:14 pmONT-BOI
5h 34m1 stop
$145Delta
Find Deal
Wed, Dec 3 - Tue, Dec 9
Alaska Airlines Logo
6:09 pm - 7:16 pmBOI-ONT
2h 07mnonstop
Alaska Airlines Logo
7:56 pm - 10:57 pmONT-BOI
2h 01mnonstop
$147Alaska Airlines
Find Deal
Wed, Jan 14 - Tue, Jan 20
Delta Logo
5:58 pm - 11:58 pmBOI-ONT
7h 00m1 stop
Delta Logo
6:40 am - 1:14 pmONT-BOI
5h 34m1 stop
$149Delta
Find Deal
Wed, Dec 3 - Thu, Dec 11
Delta Logo
4:45 pm - 10:47 pmBOI-ONT
7h 02m1 stop
Delta Logo
6:40 am - 1:14 pmONT-BOI
5h 34m1 stop
$151Delta
Find Deal
Tue, Dec 2 - Tue, Dec 9
Frontier Logo
12:44 pm - 2:25 pmBOI-ONT
26h 41m1 stop
Frontier Logo
12:04 pm - 11:49 amONT-BOI
22h 45m1 stop
$172Frontier
Find Deal
Thu, Dec 4 - Thu, Dec 11
Alaska Airlines Logo
8:21 pm - 11:59 pmBOI-ONT
4h 38m1 stop
Alaska Airlines Logo
7:56 pm - 10:57 pmONT-BOI
2h 01mnonstop
$175Alaska Airlines
Find Deal
Tue, Jan 6 - Sat, Jan 10
Southwest Logo
4:00 pm - 8:20 pmBOI-ONT
5h 20m1 stop
Southwest Logo
11:15 am - 4:50 pmONT-BOI
4h 35m1 stop
$177Southwest
Find Deal
Wed, Jan 14 - Tue, Jan 20
Southwest Logo
10:45 am - 4:05 pmBOI-ONT
6h 20m1 stop
Southwest Logo
6:05 am - 2:20 pmONT-BOI
7h 15m2 stops
$183Southwest
Find Deal
Wed, Jan 14 - Tue, Jan 20
Frontier Logo
12:44 pm - 2:25 pmBOI-ONT
26h 41m1 stop
Frontier Logo
2:59 pm - 11:49 amONT-BOI
19h 50m2 stops
$204Frontier
Find Deal
Thu, Dec 4 - Thu, Dec 11
United Airlines Logo
2:40 pm - 5:34 pmBOI-ONT
3h 54m1 stop
United Airlines Logo
6:41 pm - 11:44 pmONT-BOI
4h 03m1 stop
$267United Airlines
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Thu, Nov 27 - Fri, Dec 5

Delta flights from Boise to Ontario

Our best Delta deals on Boise to Ontario flight tickets
Delta
Dec 3
BOI5:58 pmBoise Air Term. Gowen Fld
7h 00m
1 stop
ONT11:58 pmOntario
Dec 9
ONT6:40 amOntario
5h 34m
1 stop
BOI1:14 pmBoise Air Term. Gowen Fld
$145
Find similar
Delta
Dec 3
BOI5:58 pmBoise Air Term. Gowen Fld
7h 00m
1 stop
ONT11:58 pmOntario
Dec 11
ONT6:40 amOntario
5h 34m
1 stop
BOI1:14 pmBoise Air Term. Gowen Fld
$149
Find similar
Delta
Dec 2
BOI4:45 pmBoise Air Term. Gowen Fld
7h 02m
1 stop
ONT10:47 pmOntario
Dec 9
ONT6:40 amOntario
5h 34m
1 stop
BOI1:14 pmBoise Air Term. Gowen Fld
$151
Find similar

Frontier flights from Boise to Ontario

Our best Frontier deals on Boise to Ontario flight tickets
Frontier
Dec 4
BOI12:44 pmBoise Air Term. Gowen Fld
26h 41m
1 stop
ONT2:25 pmOntario
Dec 11
ONT12:04 pmOntario
22h 45m
1 stop
BOI11:49 amBoise Air Term. Gowen Fld
$172
Find similar
Frontier
Dec 4
BOI12:44 pmBoise Air Term. Gowen Fld
26h 41m
1 stop
ONT2:25 pmOntario
Dec 11
ONT2:59 pmOntario
19h 50m
2 stops
BOI11:49 amBoise Air Term. Gowen Fld
$204
Find similar
Frontier
Dec 5
BOI12:44 pmBoise Air Term. Gowen Fld
26h 41m
1 stop
ONT2:25 pmOntario
Dec 12
ONT10:12 pmOntario
36h 37m
2 stops
BOI11:49 amBoise Air Term. Gowen Fld
$219
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Boise to Ontario 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, momondo users made 832,500 searches. Data last updated October 22, 2025.
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

BoiseOntario

BOI - ONT

BOIONT

Boise Air Term. Gowen Fld

Wed 12/3

5:58 pm-11:58 pm

1 stop7h 00m

Ontario

Tue 12/9

6:40 am-1:14 pm

1 stop5h 34m

$145

BoiseOntario

BOI - ONT

BOIONT

Boise Air Term. Gowen Fld

Wed 1/14

6:09 pm-7:16 pm

Nonstop2h 07m

Ontario

Tue 1/20

7:56 pm-10:57 pm

Nonstop2h 01m

$147

BoiseOntario

BOI - ONT

BOIONT

Boise Air Term. Gowen Fld

Wed 12/3

5:58 pm-11:58 pm

1 stop7h 00m

Ontario

Thu 12/11

6:40 am-1:14 pm

1 stop5h 34m

$149

BoiseOntario

BOI - ONT

BOIONT

Boise Air Term. Gowen Fld

Tue 12/2

4:45 pm-10:47 pm

1 stop7h 02m

Ontario

Tue 12/9

6:40 am-1:14 pm

1 stop5h 34m

$151

BoiseOntario

BOI - ONT

BOIONT

Boise Air Term. Gowen Fld

Thu 12/4

12:44 pm-2:25 pm

1 stop26h 41m

Ontario

Thu 12/11

12:04 pm-11:49 am

1 stop22h 45m

$172

BoiseOntario

BOI - ONT

BOIONT

Boise Air Term. Gowen Fld

Tue 1/6

8:21 pm-11:59 pm

1 stop4h 38m

Ontario

Sat 1/10

7:56 pm-10:57 pm

Nonstop2h 01m

$175

BoiseOntario

BOI - ONT

BOIONT

Boise Air Term. Gowen Fld

Wed 1/14

4:00 pm-8:20 pm

1 stop5h 20m

Ontario

Tue 1/20

11:15 am-4:50 pm

1 stop4h 35m

$177

BoiseOntario

BOI - ONT

BOIONT

Boise Air Term. Gowen Fld

Wed 1/14

10:45 am-4:05 pm

1 stop6h 20m

Ontario

Tue 1/20

6:05 am-2:20 pm

2 stops7h 15m

$183

BoiseOntario

BOI - ONT

BOIONT

Boise Air Term. Gowen Fld

Thu 12/4

12:44 pm-2:25 pm

1 stop26h 41m

Ontario

Thu 12/11

2:59 pm-11:49 am

2 stops19h 50m

$204

BoiseOntario

BOI - ONT

BOIONT

Boise Air Term. Gowen Fld

Thu 11/27

2:40 pm-5:34 pm

1 stop3h 54m

Ontario

Fri 12/5

6:41 pm-11:44 pm

1 stop4h 03m

$267

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Boise to Ontario

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

What is the cheapest month to fly to Ontario?

In general, August is the cheapest month to fly from Boise to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $235. If you aren’t able to travel during the month of August, then book flights to Ontario from Boise during September instead. Flights to Ontario in September, while not as cheap as those in August, still average around $281.

What is the cheapest day to depart on your flight to Ontario?

The cheapest day to depart on your flight to Ontario is on a Wednesday when prices can be found for as low as $308. This is often the case because there is less demand to fly during this day of the week. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Boise to Ontario for around $351.

What is the cheapest time of day to depart on your flight to Ontario?

In the evening is the cheapest time of day to fly from Boise to Ontario when you can find flight prices for as low as $313. Flying to Ontario in the evening is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $427 on average. Flights to Ontario from Boise in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

How far in advance should I book a flight to Ontario?

You are more likely to see cheaper flights to Ontario from Boise when booking weeks ahead of your departure date. In general, you can expect to find flights to Ontario for around $330 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ontario from Boise for as low as $191 on momondo.

How have Boise to Ontario flight prices changed over time?

As of October 2025, prices for Boise to Ontario flights are approximately 61% cheaper when compared to flights at the same time last year.

When to book flights from Boise to Ontario

Are you open to changing your travel dates? Check out the ideal times to fly from Boise to Ontario according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Boise to Ontario (BOI to ONT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boise to Ontario

Best Price Found

$367

Fastest flight time

2h 07m

Direct flights

Every day

Airports in Ontario

1 airport
The best flight deal from Boise to Ontario found on momondo in the last 72 hours is $367
The fastest flight from Boise to Ontario takes 2h 07m
Direct flights go from Boise to Ontario every day.
There is 1 airport near Ontario: Ontario (ONT)
Search flight deals

  • How far is Boise Air Term. Gowen Fld to Ontario by plane?

    Ontario is 663.9 mi away from Boise Air Term. Gowen Fld. Flights usually cover this in 2h 07m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Boise Air Term. Gowen Fld Airport to Ontario Airport?

    Prices for flights from Boise Air Term. Gowen Fld Airport to Ontario Airport are updated daily.

  • How many operators does momondo search for flights from Boise Air Term. Gowen Fld Airport to Ontario Airport?

  • How old do you have to be to fly from Boise Air Term. Gowen Fld Airport to Ontario Airport?

    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 Boise Air Term. Gowen Fld Airport to Ontario Airport.

  • What documentation or ID do you need to fly to Ontario Airport?

    The required travel and health documents for your Ontario Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ontario Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Boise to Ontario?

  • What is the most popular airline from Boise to Ontario?

Best airlines flying from Boise to Ontario

Compare and see reviews for airlines that fly from Boise to Ontario with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $156Free CancellationRating
7.9
7,979 reviews
Search Delta flights
United AirlinesPriceFrom $211Free CancellationRating
7.4
8,988 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $217Free CancellationRating
8.0
11,150 reviews
Search Alaska Airlines flights
SouthwestPriceFrom $218Free CancellationRating
8.0
4,237 reviews
Search Southwest flights

Why use momondo?

Why should I use momondo to find a flight deal from Boise to Ontario?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Ontario from Boise.

Can I find flights from Boise to Ontario with flexible booking policies on momondo?

Yes. All flights to Ontario from Boise on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Boise to Ontario?

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 Boise to Ontario.

I’m not ready to book a flight from Boise to Ontario right now. Can momondo alert me if prices change?

Price alerts on flights to Ontario from Boise are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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