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Cheap flights from Boise to San José from $142

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 San José departing on 1/10. 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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0 bags

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Find the cheapest flights from Boise to San José

Cheap round-trip flights

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United Airlines Logo
6:55 pm - 7:15 amBOI-SJO
12h 20m1 stop
United Airlines Logo
8:45 am - 9:15 pmSJO-BOI
12h 30m1 stop
$298United Airlines
Find Deal
Mon, Mar 30 - Thu, Apr 16
United Airlines Logo
6:55 pm - 7:15 amBOI-SJO
12h 20m1 stop
United Airlines Logo
7:55 am - 10:22 pmSJO-BOI
14h 27m2 stops
$302United Airlines
Find Deal
Mon, Mar 30 - Thu, Apr 16
Multiple Airlines Logo
7:05 am - 11:15 pmBOI-SJO
15h 10m2 stops
Multiple Airlines Logo
6:00 am - 1:35 pmSJO-BOI
32h 35m2 stops
$328Multiple Airlines
Find Deal
Sat, Jan 31 - Sat, Feb 7
American Airlines Logo
7:20 am - 11:43 pmBOI-SJO
15h 23m1 stop
American Airlines Logo
6:38 am - 7:25 pmSJO-BOI
13h 47m1 stop
$353American Airlines
Find Deal
Sat, Jan 31 - Sat, Feb 7
American Airlines Logo
12:37 pm - 11:43 pmBOI-SJO
10h 06m2 stops
American Airlines Logo
6:38 am - 7:25 pmSJO-BOI
13h 47m1 stop
$357American Airlines
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Sat, Jan 31 - Sat, Feb 7
American Airlines Logo
1:44 pm - 11:00 amBOI-SJO
21h 16m2 stops
American Airlines Logo
12:55 pm - 12:40 pmSJO-BOI
23h 45m2 stops
$362American Airlines
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Mon, Mar 9 - Wed, Mar 11
Multiple Airlines Logo
7:00 pm - 11:15 pmBOI-SJO
28h 15m2 stops
Multiple Airlines Logo
6:10 am - 11:07 pmSJO-BOI
16h 57m2 stops
$369Multiple Airlines
Find Deal
Mon, Mar 30 - Thu, Apr 16
Alaska Airlines Logo
7:30 am - 10:00 pmBOI-SJO
14h 30m1 stop
Alaska Airlines Logo
1:26 am - 12:04 pmSJO-BOI
10h 38m1 stop
$442Alaska Airlines
Find Deal
Mon, Mar 9 - Tue, Mar 10
Alaska Airlines Logo
9:00 am - 10:00 pmBOI-SJO
13h 00m2 stops
Alaska Airlines Logo
1:26 am - 4:20 pmSJO-BOI
14h 54m2 stops
$446Alaska Airlines
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Mon, Mar 9 - Tue, Mar 10
Southwest Logo
5:00 am - 8:30 pmBOI-SJO
14h 30m2 stops
Southwest Logo
9:00 am - 11:10 pmSJO-BOI
15h 10m2 stops
$535Southwest
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Sun, Nov 30 - Wed, Dec 10

Alaska Airlines flights from Boise to San José

Our best Alaska Airlines deals on Boise to San José flight tickets
Alaska Airlines
Nov 11
BOI8:50 amBoise Air Term. Gowen Fld
14h 48m
2 stops
SJO12:38 amSan José Juan Santamaria Intl
Nov 17
SJO1:55 amSan José Juan Santamaria Intl
12h 45m
1 stop
BOI1:40 pmBoise Air Term. Gowen Fld
$320
Find similar
Alaska Airlines
Nov 11
BOI8:50 amBoise Air Term. Gowen Fld
14h 48m
2 stops
SJO12:38 amSan José Juan Santamaria Intl
Nov 16
SJO1:55 amSan José Juan Santamaria Intl
23h 04m
2 stops
BOI11:59 pmBoise Air Term. Gowen Fld
$333
Find similar
Alaska Airlines
Nov 11
BOI8:08 amBoise Air Term. Gowen Fld
15h 30m
1 stop
SJO12:38 amSan José Juan Santamaria Intl
Nov 17
SJO1:55 amSan José Juan Santamaria Intl
12h 45m
1 stop
BOI1:40 pmBoise Air Term. Gowen Fld
$362
Find similar

American Airlines flights from Boise to San José

Our best American Airlines deals on Boise to San José flight tickets
American Airlines
Jan 31
BOI7:20 amBoise Air Term. Gowen Fld
15h 23m
1 stop
SJO11:43 pmSan José Juan Santamaria Intl
Feb 7
SJO6:38 amSan José Juan Santamaria Intl
13h 47m
1 stop
BOI7:25 pmBoise Air Term. Gowen Fld
$353
Find similar
American Airlines
Jan 31
BOI12:37 pmBoise Air Term. Gowen Fld
10h 06m
2 stops
SJO11:43 pmSan José Juan Santamaria Intl
Feb 7
SJO6:38 amSan José Juan Santamaria Intl
13h 47m
1 stop
BOI7:25 pmBoise Air Term. Gowen Fld
$357
Find similar
American Airlines
Mar 9
BOI1:44 pmBoise Air Term. Gowen Fld
21h 16m
2 stops
SJO11:00 amSan José Juan Santamaria Intl
Mar 11
SJO12:55 pmSan José Juan Santamaria Intl
23h 45m
2 stops
BOI12:40 pmBoise Air Term. Gowen Fld
$362
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Boise to San José 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 November 5, 2025.
Use the filters below to find and compare flights from Boise to San José that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Mon 3/30

6:55 pm-7:15 am

1 stop12h 20m

San José Juan Santamaria Intl

Thu 4/16

8:45 am-9:15 pm

1 stop12h 30m

$298

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Mon 3/30

6:55 pm-7:15 am

1 stop12h 20m

San José Juan Santamaria Intl

Thu 4/16

7:55 am-10:22 pm

2 stops14h 27m

$302

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Sat 1/31

7:05 am-11:15 pm

2 stops15h 10m

San José Juan Santamaria Intl

Sat 2/7

6:00 am-1:35 pm

2 stops32h 35m

$328

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Sat 1/31

7:20 am-11:43 pm

1 stop15h 23m

San José Juan Santamaria Intl

Sat 2/7

6:38 am-7:25 pm

1 stop13h 47m

$353

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Sat 1/31

12:37 pm-11:43 pm

2 stops10h 06m

San José Juan Santamaria Intl

Sat 2/7

6:38 am-7:25 pm

1 stop13h 47m

$357

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Mon 3/9

1:44 pm-11:00 am

2 stops21h 16m

San José Juan Santamaria Intl

Wed 3/11

12:55 pm-12:40 pm

2 stops23h 45m

$362

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Mon 3/30

7:00 pm-11:15 pm

2 stops28h 15m

San José Juan Santamaria Intl

Thu 4/16

6:10 am-11:07 pm

2 stops16h 57m

$369

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Mon 3/9

7:30 am-10:00 pm

1 stop14h 30m

San José Juan Santamaria Intl

Tue 3/10

1:26 am-12:04 pm

1 stop10h 38m

$442

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Mon 3/9

9:00 am-10:00 pm

2 stops13h 00m

San José Juan Santamaria Intl

Tue 3/10

1:26 am-4:20 pm

2 stops14h 54m

$446

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Sun 11/30

5:00 am-8:30 pm

2 stops14h 30m

San José Juan Santamaria Intl

Wed 12/10

9:00 am-11:10 pm

2 stops15h 10m

$535

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 San José

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 typical price of a round-trip flight between Boise and San José?

What is the cheapest month to fly to San José?

In general, January is the cheapest month to fly from Boise to San José. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $371. If you don’t want to visit San José in January, then you should wait until August to fly from Boise, when ticket prices are also cheap, with an average price of $457.

What is the cheapest day to depart on your flight to San José?

On average, the least expensive day to fly to San José from Boise is on a Sunday. momondo users have found tickets for Sunday departures for as low as $605. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from Boise to San José on a Friday will generally be more expensive and average around $765. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

Our data shows that the cheapest Boise to San José flights are usually those with departure times in the evening. Our users have found flights to San José in the evening for as low as $581. Flights in the morning are often more expensive with an average ticket price of $723.

How far in advance should I book a flight to San José?

You are more likely to see cheaper flights to San José from Boise when booking weeks ahead of your departure date. In general, you can expect to find flights to San José for around $599 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San José from Boise for as low as $386 on momondo.

Can stopping save me money on Boise to San José flights?

You could potentially save up to 50% on your flight if you consider stops on a Boise to San José flight.

How have Boise to San José flight prices changed over time?

When to book flights from Boise to San José

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

Cheap Boise to San José (BOI to SJO) flight deals and tips

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

Direct flights

None
There are no direct flights from Boise to San José. There are no popular flight routes from Boise to San José.
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  • How far is Boise Air Term. Gowen Fld to San José Juan Santamaria Intl by plane?

    A flight from Boise Air Term. Gowen Fld to San José Juan Santamaria Intl will travel around 3016.7 mi. In terms of flight time, this usually takes a little over 10h 06m.

  • When did momondo last update prices for flights from Boise Air Term. Gowen Fld Airport to San José Juan Santamaria Intl Airport?

    Prices for flights from Boise Air Term. Gowen Fld Airport to San José Juan Santamaria Intl Airport are updated daily.

  • How many operators does momondo search for flights from Boise Air Term. Gowen Fld Airport to San José Juan Santamaria Intl Airport?

  • How old do you have to be to fly from Boise Air Term. Gowen Fld Airport to San José Juan Santamaria Intl 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 San José Juan Santamaria Intl Airport.

  • What documentation or ID do you need to fly to San José Juan Santamaria Intl Airport?

    The necessary travel and health documents for your San José Juan Santamaria Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Boise to San José?

Best airlines flying from Boise to San José

Compare and see reviews for airlines that fly from Boise to San José with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $141Free CancellationRating
7.9
8,004 reviews
Search Delta flights
American AirlinesPriceFrom $317Free CancellationRating
7.2
11,042 reviews
Search American Airlines flights
United AirlinesPriceFrom $323Free CancellationRating
7.4
9,002 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $376Free CancellationRating
8.0
11,242 reviews
Search Alaska Airlines flights
SouthwestPriceFrom $477Free CancellationRating
8.0
4,240 reviews
Search Southwest flights

Traveling to a place near San José?

Book flights to San José if you plan to visit one of these locations
Manuel Antonio
Jacó
Alajuela
Monteverde
Heredia
Dominical
Santa Elena
Esterillos Este

Why use momondo?

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

It is quick and easy to find Boise to San José flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to San José that suits you.

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

momondo does allow users to show only those flights to San José from Boise which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Boise to San José?

Once you have performed a search for Boise to San José flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Price alerts on flights to San José 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.

An easier way to manage your San José trip

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