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Cheap flights from Ontario to Boise from $84

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Boise departing on 8/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Ontario to Boise

Cheap round-trip flights

Frontier Logo
5:21 pm - 11:46 amONT-BOI
17h 25m1 stop
Frontier Logo
12:36 pm - 11:50 pmBOI-ONT
12h 14m1 stop
$215Frontier
Find Deal
mié., ago. 13 - dom., ago. 17
Frontier Logo
12:59 am - 11:38 amONT-BOI
9h 39m1 stop
Frontier Logo
12:33 pm - 11:50 pmBOI-ONT
12h 17m1 stop
$218Frontier
Find Deal
mié., ago. 27 - dom., ago. 31
American Airlines Logo
10:20 am - 8:02 pmONT-BOI
8h 42m1 stop
American Airlines Logo
6:40 am - 3:24 pmBOI-ONT
9h 44m1 stop
$223American Airlines
Find Deal
sáb., oct. 4 - sáb., oct. 11
Delta Logo
6:05 pm - 11:50 pmONT-BOI
4h 45m1 stop
Delta Logo
6:00 pm - 11:40 pmBOI-ONT
6h 40m1 stop
$235Delta
Find Deal
vie., ago. 22 - dom., ago. 24
Southwest Logo
9:25 am - 3:10 pmONT-BOI
4h 45m1 stop
Southwest Logo
12:40 pm - 6:55 pmBOI-ONT
7h 15m2 stops
$240Southwest
Find Deal
mar., sep. 30 - mar., oct. 7
Alaska Airlines Logo
4:00 pm - 10:46 pmONT-BOI
5h 46m1 stop
Alaska Airlines Logo
6:35 am - 10:44 amBOI-ONT
5h 09m1 stop
$246Alaska Airlines
Find Deal
lun., ago. 18 - mié., ago. 20
Delta Logo
4:50 pm - 12:15 amONT-BOI
6h 25m1 stop
Delta Logo
4:20 pm - 10:42 pmBOI-ONT
7h 22m1 stop
$247Delta
Find Deal
dom., ago. 17 - mié., ago. 20
Alaska Airlines Logo
11:39 am - 6:16 pmONT-BOI
5h 37m1 stop
Alaska Airlines Logo
6:35 am - 10:44 amBOI-ONT
5h 09m1 stop
$258Alaska Airlines
Find Deal
jue., sep. 4 - lun., sep. 8
Southwest Logo
3:30 pm - 12:05 amONT-BOI
7h 35m1 stop
Southwest Logo
5:25 am - 9:35 amBOI-ONT
5h 10m1 stop
$267Southwest
Find Deal
vie., sep. 19 - dom., sep. 21
United Airlines Logo
6:00 am - 1:49 pmONT-BOI
6h 49m1 stop
United Airlines Logo
2:42 pm - 8:43 pmBOI-ONT
7h 01m1 stop
$305United Airlines
Find Deal
jue., ago. 21 - sáb., ago. 23

Alaska Airlines flights from Ontario to Boise

Our best Alaska Airlines deals on Ontario to Boise flight tickets
Alaska Airlines
Aug 18
ONT4:00 pmOntario
5h 46m
1 stop
BOI10:46 pmBoise Air Term. Gowen Fld
Aug 20
BOI6:35 amBoise Air Term. Gowen Fld
5h 09m
1 stop
ONT10:44 amOntario
$246
Find similar
Alaska Airlines
Sep 4
ONT11:39 amOntario
5h 37m
1 stop
BOI6:16 pmBoise Air Term. Gowen Fld
Sep 8
BOI6:35 amBoise Air Term. Gowen Fld
5h 09m
1 stop
ONT10:44 amOntario
$258
Find similar
Alaska Airlines
Jan 22
ONT6:00 pmOntario
4h 50m
1 stop
BOI11:50 pmBoise Air Term. Gowen Fld
Jan 27
BOI1:15 pmBoise Air Term. Gowen Fld
6h 02m
1 stop
ONT6:17 pmOntario
$260
Find similar

Delta flights from Ontario to Boise

Our best Delta deals on Ontario to Boise flight tickets
Delta
Aug 22
ONT6:05 pmOntario
4h 45m
1 stop
BOI11:50 pmBoise Air Term. Gowen Fld
Aug 24
BOI6:00 pmBoise Air Term. Gowen Fld
6h 40m
1 stop
ONT11:40 pmOntario
$235
Find similar
Delta
Aug 17
ONT4:50 pmOntario
6h 25m
1 stop
BOI12:15 amBoise Air Term. Gowen Fld
Aug 20
BOI4:20 pmBoise Air Term. Gowen Fld
7h 22m
1 stop
ONT10:42 pmOntario
$247
Find similar
Delta
Oct 5
ONT6:00 amOntario
3h 34m
1 stop
BOI10:34 amBoise Air Term. Gowen Fld
Oct 6
BOI4:46 pmBoise Air Term. Gowen Fld
7h 03m
1 stop
ONT10:49 pmOntario
$259
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated julio 30, 2025.
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

OntarioBoise

ONT - BOI

ONTBOI

Ontario

mié. 8/13

5:21 pm-11:46 am

1 stop17h 25m

Boise Air Term. Gowen Fld

dom. 8/17

12:36 pm-11:50 pm

1 stop12h 14m

$215

OntarioBoise

ONT - BOI

ONTBOI

Ontario

mié. 8/27

12:59 am-11:38 am

1 stop9h 39m

Boise Air Term. Gowen Fld

dom. 8/31

12:33 pm-11:50 pm

1 stop12h 17m

$218

OntarioBoise

ONT - BOI

ONTBOI

Ontario

sáb. 10/4

10:20 am-8:02 pm

1 stop8h 42m

Boise Air Term. Gowen Fld

sáb. 10/11

6:40 am-3:24 pm

1 stop9h 44m

$223

OntarioBoise

ONT - BOI

ONTBOI

Ontario

vie. 8/22

6:05 pm-11:50 pm

1 stop4h 45m

Boise Air Term. Gowen Fld

dom. 8/24

6:00 pm-11:40 pm

1 stop6h 40m

$235

OntarioBoise

ONT - BOI

ONTBOI

Ontario

mar. 9/30

9:25 am-3:10 pm

1 stop4h 45m

Boise Air Term. Gowen Fld

mar. 10/7

12:40 pm-6:55 pm

2 stops7h 15m

$240

OntarioBoise

ONT - BOI

ONTBOI

Ontario

lun. 8/18

4:00 pm-10:46 pm

1 stop5h 46m

Boise Air Term. Gowen Fld

mié. 8/20

6:35 am-10:44 am

1 stop5h 09m

$246

OntarioBoise

ONT - BOI

ONTBOI

Ontario

dom. 8/17

4:50 pm-12:15 am

1 stop6h 25m

Boise Air Term. Gowen Fld

mié. 8/20

4:20 pm-10:42 pm

1 stop7h 22m

$247

OntarioBoise

ONT - BOI

ONTBOI

Ontario

jue. 9/4

11:39 am-6:16 pm

1 stop5h 37m

Boise Air Term. Gowen Fld

lun. 9/8

6:35 am-10:44 am

1 stop5h 09m

$258

OntarioBoise

ONT - BOI

ONTBOI

Ontario

vie. 9/19

3:30 pm-12:05 am

1 stop7h 35m

Boise Air Term. Gowen Fld

dom. 9/21

5:25 am-9:35 am

1 stop5h 10m

$267

OntarioBoise

ONT - BOI

ONTBOI

Ontario

jue. 8/21

6:00 am-1:49 pm

1 stop6h 49m

Boise Air Term. Gowen Fld

sáb. 8/23

2:42 pm-8:43 pm

1 stop7h 01m

$305

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Boise from

How to get the cheapest flight ticket from Ontario to Boise

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 Boise?

The month of January is, on average, the cheapest month to fly to Boise from Ontario, with most prices found around $240. If you aren’t able to travel during the month of January, then book flights to Boise from Ontario during September instead. Flights to Boise in September, while not as cheap as those in January, still average around $278.

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

Our data shows that Saturday is the least expensive day to fly to Boise. Tickets to fly out on this day can be as low as $265. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around $325. These prices are subject to change though, so be sure to set up a Price Alert for flights to Boise.

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

Our data shows that the cheapest Ontario to Boise flights are usually those with departure times at noon. Our users have found flights to Boise at noon for as low as $177. In the morning is when there is more demand to fly to Boise, so prices are often more expensive at around $293 per ticket.

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

You are more likely to see cheaper flights to Boise from Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Boise for around $322 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Boise from Ontario for as low as $197 on momondo.

How have Ontario to Boise flight prices changed over time?

As of July 2025, prices for Ontario to Boise flights are approximately 3% more expensive when compared to flights at the same time last year.

When to book flights from Ontario to Boise

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

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

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

Best Price Found

$84

Fastest flight time

3h 34m

Direct flights

None

Airports in Boise

1 airport
The best one-way flight to Boise from Ontario in the past 72 hours is $84. The best round-trip flight deal from Ontario to Boise found on momondo in the last 72 hours is $215.
The fastest flight from Ontario to Boise takes 3h 34m
There are no direct flights from Ontario to Boise. Popular non-direct route for this connection is Ontario Airport - Boise Air Term. Gowen Fld Airport.
There is 1 airport near Boise: Boise Air Term. Gowen Fld (BOI)
Search flight deals

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

    A flight from Ontario to Boise Air Term. Gowen Fld will travel around 663.9 mi. A reasonable flight in good conditions will take 3h 34m.

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

    Prices for flights from Ontario Airport to Boise Air Term. Gowen Fld Airport are refreshed on a daily basis.

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Boise Air Term. Gowen Fld Airport.

  • What documentation or ID do you need to fly to Boise Air Term. Gowen Fld Airport?

    The required travel and health documents for your Boise Air Term. Gowen Fld 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 Boise Air Term. Gowen Fld Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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

Best airlines flying from Ontario to Boise

Compare and see reviews for airlines that fly from Ontario to Boise with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $169Free CancellationRating
8.0
7,980 reviews
Search Delta flights
Alaska AirlinesPriceFrom $178Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
American AirlinesPriceFrom $218Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $233Free CancellationRating
7.4
8,896 reviews
Search United Airlines flights
SouthwestPriceFrom $239Free CancellationRating
8.0
4,241 reviews
Search Southwest flights

Traveling to a place near Boise?

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

Why use momondo?

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

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 Boise for you.

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

Flights from Ontario to Boise with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Boise from Ontario.

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

Of course. momondo tracks the price of Ontario to Boise flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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