$160+ Cheap flights from St. Louis (STL) 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 4/13. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SJO
เม.ย. 9 — เม.ย. 161
Round-trip
1 adult, Economy
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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
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Cheapest flights from St. Louis to San JoséExplore the most affordable flight options available from St. Louis to San José. Find the lowest fares from popular airlines and budget airlines, with prices last updated on มีนาคม 10, 2026.
Explore the most affordable flight options available from St. Louis to San José. Find the lowest fares from popular airlines and budget airlines, with prices last updated on มีนาคม 10, 2026.
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
พ. 4/295:24 am
STL
- SJO
1 stop14h 43m
American Airlines
พ. 5/2011:35 pm
SJO
- STL
1 stop17h 55m
American Airlines
Deal found 3/9![American Airlines logo]()
$362
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ส. 5/96:11 pm
STL
- SJO
1 stop20h 11m
American Airlines
พ. 5/2011:35 pm
SJO
- STL
1 stop17h 55m
American Airlines
Deal found 3/9![American Airlines logo]()
$370
This Orbitz deal was found by Cheapflights users on 3/6. 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.
อา. 5/244:44 pm
STL
- SJO
1 stop17h 01m
Frontier
ศ. 5/2910:00 am
SJO
- STL
1 stop12h 57m
Frontier
Deal found 3/6![Frontier logo]()
$378
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
อา. 5/36:00 am
STL
- SJO
1 stop6h 56m
Delta
อ. 5/121:20 pm
SJO
- STL
1 stop17h 50m
Delta
Deal found 3/7![Delta logo]()
$382
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
อา. 5/105:20 am
STL
- SJO
1 stop17h 16m
American Airlines
ส. 5/1611:35 pm
SJO
- STL
1 stop16h 46m
American Airlines
Deal found 3/9![American Airlines logo]()
$392
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ศ. 5/86:00 am
STL
- SJO
1 stop6h 55m
Delta
ส. 5/91:20 pm
SJO
- STL
1 stop9h 39m
Delta
Deal found 3/7![Delta logo]()
$402
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ศ. 5/85:51 am
STL
- SJO
2 stops14h 16m
American Airlines
ส. 5/166:30 am
SJO
- STL
2 stops15h 29m
American Airlines
Deal found 3/8![American Airlines logo]()
$407
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ส. 5/166:11 pm
STL
- SJO
1 stop20h 11m
American Airlines
พฤ. 5/216:00 am
SJO
- STL
1 stop15h 58m
American Airlines
Deal found 3/7![American Airlines logo]()
$410
Best flights from St. Louis to San JoséDiscover carefully curated flight deals from St. Louis to San José that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated มีนาคม 10, 2026.
Discover carefully curated flight deals from St. Louis to San José that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated มีนาคม 10, 2026.
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ส. 5/96:00 am
STL
- SJO
1 stop8h 15m
Delta
อ. 5/121:20 pm
SJO
- STL
1 stop17h 50m
Delta
Deal found 3/8![Delta logo]()
$442
This United Airlines deal was found by Cheapflights users on 3/5. 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.
อา. 4/199:10 am
STL
- SJO
2 stops28h 11m
United Airlines
อา. 4/2611:13 am
SJO
- STL
2 stops20h 12m
United Airlines
Deal found 3/5![United Airlines logo]()
$497
This Kiwi.com deal was found by Cheapflights users on 3/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ส. 4/118:36 am
STL
- SJO
1 stop27h 06m
Multiple Airlines
ศ. 4/172:20 am
SJO
- STL
2 stops16h 12m
Multiple Airlines
Deal found 3/5![Multiple Airlines logo]()
$504
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ศ. 5/86:00 am
STL
- SJO
1 stop6h 55m
Delta
พฤ. 5/141:20 pm
SJO
- STL
1 stop17h 50m
Delta
Deal found 3/8![Delta logo]()
$460
This Delta deal was found by Cheapflights users on 3/6. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
พ. 4/110:12 am
STL
- SJO
1 stop12h 03m
Delta
อ. 4/77:00 am
SJO
- STL
1 stop9h 53m
Delta
Deal found 3/6![Delta logo]()
$500
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.
จ. 4/67:45 am
STL
- SJO
2 stops27h 26m
United Airlines
อ. 4/217:55 am
SJO
- STL
2 stops23h 30m
United Airlines
Deal found 3/7![United Airlines logo]()
$557
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.
พ. 5/67:09 pm
STL
- SJO
2 stops18h 12m
United Airlines
พ. 5/131:25 pm
SJO
- STL
1 stop8h 05m
United Airlines
Deal found 3/8![United Airlines logo]()
$557
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.
จ. 4/207:45 am
STL
- SJO
2 stops13h 34m
United Airlines
พฤ. 4/237:55 am
SJO
- STL
2 stops23h 30m
United Airlines
Deal found 3/7![United Airlines logo]()
$557
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.
อา. 5/109:21 am
STL
- SJO
2 stops28h 00m
United Airlines
พ. 5/137:55 am
SJO
- STL
2 stops13h 50m
United Airlines
Deal found 3/8![United Airlines logo]()
$557
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.
ส. 5/96:00 am
STL
- SJO
1 stop7h 21m
United Airlines
ศ. 5/1512:44 pm
SJO
- STL
1 stop10h 13m
United Airlines
Deal found 3/8![United Airlines logo]()
$572
Last-minute flights from St. Louis to San JoséDiscover last-minute flight deals from St. Louis to San José. Data last updated มีนาคม 10, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to San José. Data last updated มีนาคม 10, 2026 and is based on user searches.
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
พ. 4/111:22 am
STL
- SJO
1 stop9h 11m
American Airlines
พ. 4/86:30 am
SJO
- STL
1 stop14h 54m
American Airlines
Deal found 3/7![American Airlines logo]()
$461
This American Airlines deal was found by Cheapflights users on 3/6. 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.
จ. 4/66:57 pm
STL
- SJO
1 stop17h 38m
American Airlines
อ. 4/212:08 pm
SJO
- STL
1 stop7h 51m
American Airlines
Deal found 3/6![American Airlines logo]()
$442
This American Airlines deal was found by Cheapflights users on 3/6. 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.
จ. 4/66:57 pm
STL
- SJO
1 stop17h 38m
American Airlines
จ. 4/202:22 pm
SJO
- STL
2 stops18h 22m
American Airlines
Deal found 3/6![American Airlines logo]()
$467
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
พ. 4/86:55 pm
STL
- SJO
1 stop17h 30m
American Airlines
พ. 4/1511:35 pm
SJO
- STL
1 stop8h 19m
American Airlines
Deal found 3/9![American Airlines logo]()
$422
This United Airlines deal was found by Cheapflights users on 3/6. 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.
ศ. 4/106:00 am
STL
- SJO
1 stop7h 21m
United Airlines
พฤ. 4/1611:13 am
SJO
- STL
1 stop10h 15m
United Airlines
Deal found 3/6![United Airlines logo]()
$412
This United Airlines deal was found by Cheapflights users on 3/5. 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.
อ. 4/146:30 am
STL
- SJO
2 stops14h 07m
United Airlines
อา. 4/1911:50 am
SJO
- STL
1 stop11h 07m
United Airlines
Deal found 3/5![United Airlines logo]()
$448
This United Airlines deal was found by Cheapflights users on 3/5. 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.
อา. 4/196:00 am
STL
- SJO
1 stop7h 21m
United Airlines
อา. 4/2611:13 am
SJO
- STL
1 stop10h 15m
United Airlines
Deal found 3/5![United Airlines logo]()
$413
This American Airlines deal was found by Cheapflights users on 3/5. 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.
อา. 4/195:51 am
STL
- SJO
2 stops14h 16m
American Airlines
อา. 4/2611:35 pm
SJO
- STL
1 stop22h 24m
American Airlines
Deal found 3/5![American Airlines logo]()
$458
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
พ. 4/295:24 am
STL
- SJO
1 stop14h 43m
American Airlines
พ. 5/2011:35 pm
SJO
- STL
1 stop17h 55m
American Airlines
Deal found 3/9![American Airlines logo]()
$362
One-way flights from St. Louis to San JoséSearch for one-way flight options from St. Louis to San José. Find affordable one-way fares based on user searches. Data last updated มีนาคม 10, 2026.
Search for one-way flight options from St. Louis to San José. Find affordable one-way fares based on user searches. Data last updated มีนาคม 10, 2026.
This American Airlines deal was found by Cheapflights users on 3/6. 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.
จ. 4/136:55 pm
STL
- SJO
1 stop17h 40m
American Airlines
Deal found 3/6![American Airlines logo]()
$160
This Southwest deal was found by Cheapflights users on 3/6. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
อ. 5/195:30 am
STL
- SJO
1 stop7h 40m
Southwest
Deal found 3/6![Southwest logo]()
$193
This United Airlines deal was found by Cheapflights users on 3/6. 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.
จ. 4/139:10 am
STL
- SJO
2 stops12h 09m
United Airlines
Deal found 3/6![United Airlines logo]()
$200
This Kiwi.com deal was found by Cheapflights users on 3/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
จ. 4/138:41 am
STL
- SJO
3 stops27h 33m
Multiple Airlines
Deal found 3/6![Multiple Airlines logo]()
$257
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
อา. 4/54:05 pm
STL
- SJO
1 stop30h 25m
Air Canada
Deal found 3/8![Air Canada logo]()
$262
This BusinessClass deal was found by Cheapflights users on 3/5. 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.
อา. 4/54:05 pm
STL
- SJO
1 stop30h 25m
Avianca
Deal found 3/5![Avianca logo]()
$266
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.
ส. 4/410:09 am
STL
- SJO
2 stops9h 41m
Multiple Airlines
Deal found 3/7![Multiple Airlines logo]()
$285
This Kiwi.com deal was found by Cheapflights users on 3/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
อา. 4/510:12 pm
STL
- SJO
3 stops38h 02m
Multiple Airlines
Deal found 3/5![Multiple Airlines logo]()
$296
This KAYAK deal was found by Cheapflights users on 3/5. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
อา. 4/56:50 pm
STL
- SJO
2 stops25h 22m
GOL
Deal found 3/5![GOL logo]()
$298
This Kiwi.com deal was found by Cheapflights users on 3/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
อ. 5/194:55 pm
STL
- SJO
3 stops47h 10m
Multiple Airlines
Deal found 3/6![Multiple Airlines logo]()
$309
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ส. 4/45:12 am
STL
- SJO
1 stop9h 43m
American Airlines
Deal found 3/8![American Airlines logo]()
$313
Find flight deals from St. Louis to San José
Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) 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 มีนาคม 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $362 (American Airlines) |
One-way from | $160 (American Airlines) |
Popular in | December |
Cheapest in | January |
Average price | $859 |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis 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 มีนาคม 10, 2026.
Use the filters below to find and compare flights from St. Louis to San José that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisSan José
STL - SJO
STLSJO
Lambert-St Louis
ส. 5/9
6:00 am-1:15 pm
1 stop8h 15m
San José Juan Santamaria Intl
อ. 5/12
1:20 pm-8:10 am
1 stop17h 50m
$442
St. LouisSan José
STL - SJO
STLSJO
Lambert-St Louis
ศ. 5/8
6:00 am-11:55 am
1 stop6h 55m
San José Juan Santamaria Intl
พฤ. 5/14
1:20 pm-8:10 am
1 stop17h 50m
$460
St. LouisSan José
STL - SJO
STLSJO
Lambert-St Louis
อา. 4/19
9:10 am-12:21 pm
2 stops28h 11m
San José Juan Santamaria Intl
อา. 4/26
11:13 am-8:25 am
2 stops20h 12m
$497
St. LouisSan José
STL - SJO
STLSJO
Lambert-St Louis
พ. 4/1
10:12 am-9:15 pm
1 stop12h 03m
San José Juan Santamaria Intl
อ. 4/7
7:00 am-5:53 pm
1 stop9h 53m
$500
St. LouisSan José
STL - SJO
STLSJO
Lambert-St Louis
ส. 4/11
8:36 am-10:42 am
1 stop27h 06m
San José Juan Santamaria Intl
ศ. 4/17
2:20 am-7:32 pm
2 stops16h 12m
$504
St. LouisSan José
STL - SJO
STLSJO
Lambert-St Louis
จ. 4/6
7:45 am-10:11 am
2 stops27h 26m
San José Juan Santamaria Intl
อ. 4/21
7:55 am-8:25 am
2 stops23h 30m
$557
St. LouisSan José
STL - SJO
STLSJO
Lambert-St Louis
พ. 5/6
7:09 pm-12:21 pm
2 stops18h 12m
San José Juan Santamaria Intl
พ. 5/13
1:25 pm-10:30 pm
1 stop8h 05m
$557
St. LouisSan José
STL - SJO
STLSJO
Lambert-St Louis
จ. 4/20
7:45 am-8:19 pm
2 stops13h 34m
San José Juan Santamaria Intl
พฤ. 4/23
7:55 am-8:25 am
2 stops23h 30m
$557
St. LouisSan José
STL - SJO
STLSJO
Lambert-St Louis
อา. 5/10
9:21 am-12:21 pm
2 stops28h 00m
San José Juan Santamaria Intl
พ. 5/13
7:55 am-10:45 pm
2 stops13h 50m
$557
Quickest round-trip
St. LouisSan José
STL - SJO
STLSJO
Lambert-St Louis
ส. 5/9
6:00 am-12:21 pm
1 stop7h 21m
San José Juan Santamaria Intl
ศ. 5/15
12:44 pm-11:57 pm
1 stop10h 13m
$572
Showing 1-10 of 21 resultsSorted by cheapest first
Compare providers for flights from St. Louis 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 St. Louis 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*3 stars | |
| Price Accuracy2 stars | Trust Score*2 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on St. Louis-San José flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-San José flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-San José flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on St. Louis-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 St. Louis-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 St. Louis to San José
Have a flexible travel schedule? Discover the best time to fly to San José from St. Louis with our price prediction graph.
STL-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 St. Louis to San José
How far ahead should I book a flight from St. Louis to San José?
Use this chart to determine the optimal time to book a round-trip flight from St. Louis to San José. Price data was last updated on March 6, 2026.
To ensure you get the cheapest price possible for a flight from St. Louis to San José, you should look to book at least 43 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest month to book a flight from St. Louis to San José?
Currently, November is the cheapest month in which you can book a flight from St. Louis to San José (average of $314). Flying from St. Louis to San José in July is currently the most expensive (average of $427). 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 St. Louis 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 มีนาคม 10, 2026.
Peruse reviews from past customers who have flown with Southwest,Delta, andUnited Airlines from St. Louis to San José to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Entertainment
7.5
Overall
8.0
Crew
8.6
Comfort
8.0
Food
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Boarding
8.1
Entertainment
7.5
Overall
8.0
Crew
8.6
Comfort
8.0
Food
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Boarding
8.1
Entertainment
7.5
Overall
8.0
Crew
8.6
Comfort
8.0
Food
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Boarding
8.1
Entertainment
7.5
Overall
8.0
Crew
8.6
Comfort
8.0
Food
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Boarding
8.1
Entertainment
7.5
Overall
8.0
Crew
8.6
Comfort
8.0
Food
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Related info for your journey
Find useful and relevant information for your journey from St. Louis 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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St. Louis and San José flights
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Top 4 airlines flying from St. Louis to San José
Discover the top 4 airlines that operate flights from St. Louis 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 มีนาคม 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$257 | Average$528 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$331 | Average$498 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$379 | Average$515 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$383 | Average$601 | FlexibilityNo cancel fee | On-time63% |