$163+ Cheap flights from Boise (BOI) to San José (SJO)
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 4/18. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SJO
Apr 11 — Apr 181
Round-trip
1 adult, Economy
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Find cheap flights from Boise to San José 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.Cheap flight deals from Boise to San José
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Best
Last-minute
One-way
Cheapest flights from Boise to San JoséExplore the most affordable flight options available from Boise to San José. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 12, 2026.
Explore the most affordable flight options available from Boise to San José. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 12, 2026.
This United Airlines deal was found by Cheapflights users on 3/7. 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.
Sat 4/187:03 pm
BOI
- SJO
1 stop12h 12m
United Airlines
Sat 4/256:00 am
SJO
- BOI
1 stop13h 39m
United Airlines
Deal found 3/7![United Airlines logo]()
$380
This Alaska Airlines deal was found by Cheapflights users on 3/7. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/58:11 am
BOI
- SJO
1 stop15h 34m
Alaska Airlines
Sun 5/1012:55 am
SJO
- BOI
2 stops32h 47m
Alaska Airlines
Deal found 3/7![Alaska Airlines logo]()
$385
This United Airlines deal was found by Cheapflights users on 3/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/135:29 pm
BOI
- SJO
2 stops16h 42m
United Airlines
Tue 4/288:45 am
SJO
- BOI
1 stop11h 08m
United Airlines
Deal found 3/9![United Airlines logo]()
$400
This United Airlines deal was found by Cheapflights users on 3/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/145:00 am
BOI
- SJO
2 stops14h 37m
United Airlines
Wed 4/297:55 am
SJO
- BOI
2 stops14h 20m
United Airlines
Deal found 3/9![United Airlines logo]()
$405
This Alaska Airlines deal was found by Cheapflights users on 3/9. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/266:00 am
BOI
- SJO
2 stops17h 45m
Alaska Airlines
Tue 5/1212:35 am
SJO
- BOI
1 stop22h 23m
Alaska Airlines
Deal found 3/9![Alaska Airlines logo]()
$412
This Trip.com deal was found by Cheapflights users on 3/9. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/277:14 pm
BOI
- SJO
2 stops28h 01m
Multiple Airlines
Tue 5/125:45 am
SJO
- BOI
2 stops17h 16m
Multiple Airlines
Deal found 3/9![Multiple Airlines logo]()
$413
This Orbitz deal was found by Cheapflights users on 3/9. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/156:54 pm
BOI
- SJO
2 stops28h 39m
Alaska Airlines
Fri 5/2212:53 am
SJO
- BOI
2 stops34h 10m
Alaska Airlines
Deal found 3/9![Alaska Airlines logo]()
$418
This Expedia deal was found by Cheapflights users on 3/8. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/288:11 am
BOI
- SJO
2 stops15h 04m
Multiple Airlines
Tue 5/125:25 pm
SJO
- BOI
2 stops29h 33m
Multiple Airlines
Deal found 3/8![Multiple Airlines logo]()
$424
This Alaska Airlines deal was found by Cheapflights users on 3/8. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/208:07 am
BOI
- SJO
1 stop15h 46m
Alaska Airlines
Tue 4/211:03 am
SJO
- BOI
1 stop11h 31m
Alaska Airlines
Deal found 3/8![Alaska Airlines logo]()
$430
This Alaska Airlines deal was found by Cheapflights users on 3/9. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/306:00 am
BOI
- SJO
2 stops17h 45m
Alaska Airlines
Tue 5/512:55 am
SJO
- BOI
2 stops23h 04m
Alaska Airlines
Deal found 3/9![Alaska Airlines logo]()
$435
Best flights from Boise to San JoséDiscover carefully curated flight deals from Boise to San José that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 12, 2026.
Discover carefully curated flight deals from Boise to San José that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 12, 2026.
This United Airlines deal was found by Cheapflights users on 3/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/135:29 pm
BOI
- SJO
2 stops16h 42m
United Airlines
Tue 4/288:45 am
SJO
- BOI
1 stop11h 08m
United Airlines
Deal found 3/9![United Airlines logo]()
$400
This Alaska Airlines deal was found by Cheapflights users on 3/7. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/208:07 am
BOI
- SJO
1 stop15h 46m
Alaska Airlines
Tue 4/211:03 am
SJO
- BOI
1 stop11h 31m
Alaska Airlines
Deal found 3/7![Alaska Airlines logo]()
$430
This United Airlines deal was found by Cheapflights users on 3/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/154:20 pm
BOI
- SJO
1 stop14h 55m
United Airlines
Sat 5/236:40 am
SJO
- BOI
1 stop11h 16m
United Airlines
Deal found 3/9![United Airlines logo]()
$400
This Alaska Airlines deal was found by Cheapflights users on 3/7. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/306:00 am
BOI
- SJO
2 stops17h 45m
Alaska Airlines
Tue 5/512:55 am
SJO
- BOI
1 stop11h 39m
Alaska Airlines
Deal found 3/7![Alaska Airlines logo]()
$435
This Alaska Airlines deal was found by Cheapflights users on 3/9. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/106:00 am
BOI
- SJO
2 stops17h 45m
Alaska Airlines
Thu 5/1412:53 am
SJO
- BOI
2 stops23h 05m
Alaska Airlines
Deal found 3/9![Alaska Airlines logo]()
$435
This United Airlines deal was found by Cheapflights users on 3/8. 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.
Sun 4/1912:30 pm
BOI
- SJO
1 stop18h 45m
United Airlines
Sat 4/256:00 am
SJO
- BOI
1 stop13h 39m
United Airlines
Deal found 3/8![United Airlines logo]()
$490
This Alaska Airlines deal was found by Cheapflights users on 3/7. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/58:11 am
BOI
- SJO
1 stop15h 34m
Alaska Airlines
Sun 5/1012:55 am
SJO
- BOI
1 stop11h 39m
Alaska Airlines
Deal found 3/7![Alaska Airlines logo]()
$485
Last-minute flights from Boise to San JoséDiscover last-minute flight deals from Boise to San José. Data last updated March 12, 2026 and is based on user searches.
Discover last-minute flight deals from Boise to San José. Data last updated March 12, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 3/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/135:29 pm
BOI
- SJO
2 stops16h 42m
United Airlines
Tue 4/288:45 am
SJO
- BOI
1 stop11h 08m
United Airlines
Deal found 3/9![United Airlines logo]()
$400
This United Airlines deal was found by Cheapflights users on 3/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/147:03 pm
BOI
- SJO
1 stop12h 12m
United Airlines
Wed 4/297:55 am
SJO
- BOI
2 stops14h 20m
United Airlines
Deal found 3/9![United Airlines logo]()
$405
This United Airlines deal was found by Cheapflights users on 3/7. 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.
Sat 4/187:03 pm
BOI
- SJO
1 stop12h 12m
United Airlines
Sat 4/256:00 am
SJO
- BOI
1 stop13h 39m
United Airlines
Deal found 3/7![United Airlines logo]()
$380
This Alaska Airlines deal was found by Cheapflights users on 3/8. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/208:07 am
BOI
- SJO
1 stop15h 46m
Alaska Airlines
Tue 4/211:03 am
SJO
- BOI
1 stop11h 31m
Alaska Airlines
Deal found 3/8![Alaska Airlines logo]()
$430
This Avianca deal was found by Cheapflights users on 3/10. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2210:45 am
BOI
- SJO
2 stops12h 55m
Multiple Airlines
Tue 5/125:45 am
SJO
- BOI
1 stop17h 16m
Multiple Airlines
Deal found 3/10![Multiple Airlines logo]()
$443
This Alaska Airlines deal was found by Cheapflights users on 3/9. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/266:00 am
BOI
- SJO
2 stops17h 45m
Alaska Airlines
Tue 5/1212:35 am
SJO
- BOI
1 stop22h 23m
Alaska Airlines
Deal found 3/9![Alaska Airlines logo]()
$412
This Trip.com deal was found by Cheapflights users on 3/9. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/277:14 pm
BOI
- SJO
2 stops28h 01m
Multiple Airlines
Tue 5/125:45 am
SJO
- BOI
2 stops17h 16m
Multiple Airlines
Deal found 3/9![Multiple Airlines logo]()
$413
This Expedia deal was found by Cheapflights users on 3/8. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/288:11 am
BOI
- SJO
2 stops15h 04m
Multiple Airlines
Tue 5/125:25 pm
SJO
- BOI
2 stops29h 33m
Multiple Airlines
Deal found 3/8![Multiple Airlines logo]()
$424
This Alaska Airlines deal was found by Cheapflights users on 3/9. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/306:00 am
BOI
- SJO
2 stops17h 45m
Alaska Airlines
Tue 5/512:55 am
SJO
- BOI
2 stops23h 04m
Alaska Airlines
Deal found 3/9![Alaska Airlines logo]()
$435
One-way flights from Boise to San JoséSearch for one-way flight options from Boise to San José. Find affordable one-way fares based on user searches. Data last updated March 12, 2026.
Search for one-way flight options from Boise to San José. Find affordable one-way fares based on user searches. Data last updated March 12, 2026.
This Avianca deal was found by Cheapflights users on 3/7. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/188:07 am
BOI
- SJO
2 stops15h 08m
Multiple Airlines
Deal found 3/7![Multiple Airlines logo]()
$163
This United Airlines deal was found by Cheapflights users on 3/7. 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.
Sat 4/187:03 pm
BOI
- SJO
1 stop12h 12m
United Airlines
Deal found 3/7![United Airlines logo]()
$169
This United Airlines deal was found by Cheapflights users on 3/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/297:05 pm
BOI
- SJO
1 stop12h 10m
United Airlines
Deal found 3/9![United Airlines logo]()
$179
This United Airlines deal was found by Cheapflights users on 3/7. 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.
Sat 5/237:05 pm
BOI
- SJO
1 stop12h 10m
United Airlines
Deal found 3/7![United Airlines logo]()
$195
This BusinessClass deal was found by Cheapflights users on 3/8. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/77:05 pm
BOI
- SJO
1 stop12h 10m
Copa Airlines
Deal found 3/8![Copa Airlines logo]()
$216
This United Airlines deal was found by Cheapflights users on 3/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/1112:30 pm
BOI
- SJO
1 stop18h 45m
United Airlines
Deal found 3/9![United Airlines logo]()
$224
This American Airlines deal was found by Cheapflights users on 3/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/54:10 pm
BOI
- SJO
2 stops20h 49m
American Airlines
Deal found 3/11![American Airlines logo]()
$229
This Travelocity deal was found by Cheapflights users on 3/11. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/67:33 pm
BOI
- SJO
3 stops28h 07m
Multiple Airlines
Deal found 3/11![Multiple Airlines logo]()
$240
This Expedia deal was found by Cheapflights users on 3/7. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/238:51 pm
BOI
- SJO
2 stops50h 42m
Alaska Airlines
Deal found 3/7![Alaska Airlines logo]()
$244
This Alaska Airlines deal was found by Cheapflights users on 3/8. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/58:38 am
BOI
- SJO
1 stop14h 55m
Alaska Airlines
Deal found 3/8![Alaska Airlines logo]()
$274
Find flight deals from Boise to San José
Discover tips and strategies to find the most affordable flight options for your journey from Boise (BOI) to San José (SJO). 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 March 12, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $380 (United Airlines) |
One-way from | $163 (Avianca) |
Popular in | December |
Cheapest in | January |
Average price | $615 |
Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated March 12, 2026.
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
Cheapest round-trip
BoiseSan José
BOI - SJO
BOISJO
Boise Air Term. Gowen Fld
Mon 4/13
5:29 pm-10:11 am
2 stops16h 42m
San José Juan Santamaria Intl
Tue 4/28
8:45 am-7:53 pm
1 stop11h 08m
$400
Quickest round-trip
BoiseSan José
BOI - SJO
BOISJO
Boise Air Term. Gowen Fld
Fri 5/15
4:20 pm-7:15 am
1 stop14h 55m
San José Juan Santamaria Intl
Sat 5/23
6:40 am-5:56 pm
1 stop11h 16m
$400
BoiseSan José
BOI - SJO
BOISJO
Boise Air Term. Gowen Fld
Mon 4/20
8:07 am-11:53 pm
1 stop15h 46m
San José Juan Santamaria Intl
Tue 4/21
1:03 am-12:34 pm
1 stop11h 31m
$430
BoiseSan José
BOI - SJO
BOISJO
Boise Air Term. Gowen Fld
Thu 4/30
6:00 am-11:45 pm
2 stops17h 45m
San José Juan Santamaria Intl
Tue 5/5
12:55 am-12:34 pm
1 stop11h 39m
$435
BoiseSan José
BOI - SJO
BOISJO
Boise Air Term. Gowen Fld
Sun 5/10
6:00 am-11:45 pm
2 stops17h 45m
San José Juan Santamaria Intl
Thu 5/14
12:53 am-11:58 pm
2 stops23h 05m
$435
BoiseSan José
BOI - SJO
BOISJO
Boise Air Term. Gowen Fld
Tue 5/5
8:11 am-11:45 pm
1 stop15h 34m
San José Juan Santamaria Intl
Sun 5/10
12:55 am-12:34 pm
1 stop11h 39m
$485
BoiseSan José
BOI - SJO
BOISJO
Boise Air Term. Gowen Fld
Sun 4/19
12:30 pm-7:15 am
1 stop18h 45m
San José Juan Santamaria Intl
Sat 4/25
6:00 am-7:39 pm
1 stop13h 39m
$490
Cheapest one-way
BoiseSan José
BOI - SJO
BOISJO
Boise Air Term. Gowen Fld
Sat 4/18
7:03 pm-7:15 am
1 stop12h 12m
$169
BoiseSan José
BOI - SJO
BOISJO
Boise Air Term. Gowen Fld
Sat 6/6
5:46 pm-10:11 am
2 stops16h 25m
$169
BoiseSan José
BOI - SJO
BOISJO
Boise Air Term. Gowen Fld
Wed 7/29
5:46 pm-10:11 am
2 stops16h 25m
$179
Showing 1-10 of 14 resultsSorted by cheapest first
Compare providers for flights from Boise to San José
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 Boise to San José in March.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 stars | |
| Price Accuracy2 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Boise-San José flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boise-San José flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boise-San José flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Boise-San José 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-San José 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 San José
Have a flexible travel schedule? Discover the best time to fly to San José from Boise with our price prediction graph.
BOI-SJO
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 Boise to San José
How far ahead should I book a flight from Boise to San José?
Use this chart to determine the optimal time to book a round-trip flight from Boise to San José. Price data was last updated on March 6, 2026.
The price you pay for your flight from Boise to San José may vary depending on when you book. For the best chance of a lower fare, look to book 84 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from Boise to San José?
Currently, October is the cheapest month in which you can book a flight from Boise to San José (average of $165). Flying from Boise to San José in December is currently the most expensive (average of $561). 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.
How much does it cost to fly round-trip from Boise to San José?
Reviews of airlines servicing San José
Get insights into the airlines that provide service to San José. 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 San José. Reviews last updated March 12, 2026.
See what other customers who have flown with Alaska Airlines,Southwest, andDelta from Boise to San José have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
8.0
Entertainment
7.0
Boarding
8.1
Comfort
7.8
Crew
8.5
Food
7.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Overall
8.0
Entertainment
7.0
Boarding
8.1
Comfort
7.8
Crew
8.5
Food
7.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Overall
8.0
Entertainment
7.0
Boarding
8.1
Comfort
7.8
Crew
8.5
Food
7.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Overall
8.0
Entertainment
7.0
Boarding
8.1
Comfort
7.8
Crew
8.5
Food
7.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Overall
8.0
Entertainment
7.0
Boarding
8.1
Comfort
7.8
Crew
8.5
Food
7.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Overall
8.0
Entertainment
7.0
Boarding
8.1
Comfort
7.8
Crew
8.5
Food
7.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Related info for your journey
Find useful and relevant information for your journey from Boise to San José. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near San José?
Book flights to San José if you plan to visit one of these locationsAlajuela
Monteverde
Jacó
Heredia
Dominical
Manuel Antonio
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Boise and San José flights
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Top 5 airlines flying from Boise to San José
Discover the top 5 airlines that operate flights from Boise to San José. 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 March 12, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$141 | Average$815 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$279 | Average$497 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$297 | Average$467 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$376 | Average$675 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$454 | Average$698 | FlexibilityNo cancel fee | On-time63% |