$236+ Cheap flights from Costa Rica to Ontario (ONT)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/11. Fares are subject to change and may not be available on all flights or dates of travel.
SJO — ONT
Nov 8 — Nov 151
Round-trip
1 adult, Economy
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Find cheap flights from Costa Rica to Ontario with Cheapflights
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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 Costa Rica to OntarioExplore the most affordable flight options available from Costa Rica to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 9, 2026.
Explore the most affordable flight options available from Costa Rica to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 9, 2026.
This Avianca deal was found by Cheapflights users on 10/4. 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.
Thu 10/83:10 pm -
1 stop7h 35m
Sat 10/1011:35 pm -
1 stop8h 10m
Deal found 10/4![Avianca logo]()
$531
This United Airlines deal was found by Cheapflights users on 10/4. 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 12/2212:35 pm -
1 stop11h 36m
Sun 1/176:00 am -
1 stop10h 16m
Deal found 10/4![United Airlines logo]()
$533
This Avianca deal was found by Cheapflights users on 10/6. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/273:10 pm -
1 stop7h 40m
Tue 11/1710:45 pm -
1 stop8h 05m
Deal found 10/6![Avianca logo]()
$534
This Avianca deal was found by Cheapflights users on 10/6. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/73:10 pm -
1 stop7h 40m
Tue 11/1710:45 pm -
1 stop8h 05m
Deal found 10/6![Avianca logo]()
$537
This Avianca deal was found by Cheapflights users on 10/7. 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.
Thu 10/223:10 pm -
1 stop7h 35m
Thu 11/510:45 pm -
1 stop8h 05m
Deal found 10/7![Avianca logo]()
$552
This United Airlines deal was found by Cheapflights users on 10/8. 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.
Mon 12/211:15 am -
2 stops23h 38m
Tue 1/52:00 pm -
1 stop16h 32m
Deal found 10/8![United Airlines logo]()
$554
This Avianca deal was found by Cheapflights users on 10/6. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/109:45 am -
1 stop13h 05m
Tue 1/510:45 pm -
1 stop10h 40m
Deal found 10/6![Avianca logo]()
$555
This FlightHub deal was found by Cheapflights users on 10/5. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/209:40 am -
1 stop13h 05m
Sat 10/2411:35 pm -
1 stop10h 50m
Deal found 10/5![Avianca logo]()
$556
This Avianca deal was found by Cheapflights users on 10/6. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/213:10 pm -
1 stop7h 40m
Tue 12/110:45 pm -
1 stop8h 05m
Deal found 10/6![Avianca logo]()
$560
This American Airlines deal was found by Cheapflights users on 10/6. 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.
Wed 12/162:46 pm -
1 stop11h 02m
Thu 1/74:19 pm -
2 stops19h 32m
Deal found 10/6![American Airlines logo]()
$562
This Avianca deal was found by Cheapflights users on 10/8. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/313:10 pm -
1 stop7h 40m
Thu 1/1410:45 pm -
1 stop8h 05m
Deal found 10/8![Avianca logo]()
$566
This Gotogate deal was found by Cheapflights users on 10/4. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/97:45 pm -
1 stop27h 05m
Thu 11/1210:45 pm -
1 stop8h 05m
Deal found 10/4![Avianca logo]()
$568
Best flights from Costa Rica to OntarioDiscover carefully curated flight deals from Costa Rica to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 9, 2026.
Discover carefully curated flight deals from Costa Rica to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 9, 2026.
This United Airlines deal was found by Cheapflights users on 10/6. 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.
Sat 2/137:30 am -
1 stop14h 50m
Mon 3/16:00 am -
1 stop24h 32m
Deal found 10/6![United Airlines logo]()
$554
This United Airlines deal was found by Cheapflights users on 10/8. 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.
Fri 2/262:25 pm -
1 stop9h 14m
Mon 3/86:00 am -
1 stop24h 32m
Deal found 10/8![United Airlines logo]()
$554
This United Airlines deal was found by Cheapflights users on 10/6. 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.
Wed 1/131:15 am -
2 stops18h 20m
Sat 1/306:00 am -
1 stop24h 32m
Deal found 10/6![United Airlines logo]()
$576
This United Airlines deal was found by Cheapflights users on 10/6. 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.
Sun 2/78:45 am -
1 stop15h 30m
Sun 2/146:30 am -
1 stop27h 45m
Deal found 10/6![United Airlines logo]()
$576
This United Airlines deal was found by Cheapflights users on 10/6. 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.
Thu 10/227:55 am -
2 stops15h 56m
Sat 10/241:52 pm -
1 stop16h 23m
Deal found 10/6![United Airlines logo]()
$576
This United Airlines deal was found by Cheapflights users on 10/5. 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.
Mon 11/28:45 am -
2 stops16h 03m
Sat 11/71:35 pm -
2 stops19h 50m
Deal found 10/5![United Airlines logo]()
$576
This United Airlines deal was found by Cheapflights users on 10/4. 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.
Thu 10/227:55 am -
2 stops29h 23m
Sun 10/256:00 am -
2 stops29h 22m
Deal found 10/4![United Airlines logo]()
$589
This United Airlines deal was found by Cheapflights users on 10/8. 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.
Mon 3/18:45 am -
2 stops29h 48m
Wed 3/106:00 am -
1 stop29h 22m
Deal found 10/8![United Airlines logo]()
$597
This United Airlines deal was found by Cheapflights users on 10/8. 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.
Sat 10/311:25 pm -
2 stops25h 08m
Thu 1/146:00 am -
1 stop12h 39m
Deal found 10/8![United Airlines logo]()
$597
This United Airlines deal was found by Cheapflights users on 10/8. 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.
Sat 1/308:45 am -
1 stop15h 30m
Mon 2/811:20 am -
1 stop19h 12m
Deal found 10/8![United Airlines logo]()
$597
This United Airlines deal was found by Cheapflights users on 10/7. 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.
Mon 11/22:25 pm -
2 stops29h 36m
Sun 11/86:37 pm -
2 stops14h 48m
Deal found 10/7![United Airlines logo]()
$597
This United Airlines deal was found by Cheapflights users on 10/8. 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.
Wed 10/281:25 pm -
2 stops24h 05m
Fri 10/301:32 pm -
2 stops19h 53m
Deal found 10/8![United Airlines logo]()
$597
Last-minute flights from Costa Rica to OntarioDiscover last-minute flight deals from Costa Rica to Ontario. Data last updated October 9, 2026 and is based on user searches.
Discover last-minute flight deals from Costa Rica to Ontario. Data last updated October 9, 2026 and is based on user searches.
This Avianca deal was found by Cheapflights users on 10/4. 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.
Thu 10/83:10 pm -
1 stop7h 35m
Sat 10/1011:35 pm -
1 stop8h 10m
Deal found 10/4![Avianca logo]()
$531
This United Airlines deal was found by Cheapflights users on 10/6. 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.
Fri 10/168:45 am -
1 stop31h 37m
Sun 10/251:35 pm -
1 stop16h 57m
Deal found 10/6![United Airlines logo]()
$576
This FlightHub deal was found by Cheapflights users on 10/5. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/209:40 am -
1 stop13h 05m
Sat 10/2411:35 pm -
1 stop10h 50m
Deal found 10/5![Avianca logo]()
$556
This Avianca deal was found by Cheapflights users on 10/7. 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.
Thu 10/223:10 pm -
1 stop7h 35m
Thu 11/510:45 pm -
1 stop8h 05m
Deal found 10/7![Avianca logo]()
$552
This Avianca deal was found by Cheapflights users on 10/6. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/273:10 pm -
1 stop7h 40m
Tue 11/1710:45 pm -
1 stop8h 05m
Deal found 10/6![Avianca logo]()
$534
This Avianca deal was found by Cheapflights users on 10/8. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/313:10 pm -
1 stop7h 40m
Thu 1/1410:45 pm -
1 stop8h 05m
Deal found 10/8![Avianca logo]()
$566
This FlightHub deal was found by Cheapflights users on 10/5. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/27:45 pm -
1 stop27h 05m
Sat 11/710:45 pm -
1 stop10h 40m
Deal found 10/5![Avianca logo]()
$573
This Avianca deal was found by Cheapflights users on 10/6. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/73:10 pm -
1 stop7h 40m
Tue 11/1710:45 pm -
1 stop8h 05m
Deal found 10/6![Avianca logo]()
$537
This Gotogate deal was found by Cheapflights users on 10/4. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/97:45 pm -
1 stop27h 05m
Thu 11/1210:45 pm -
1 stop8h 05m
Deal found 10/4![Avianca logo]()
$568
This Avianca deal was found by Cheapflights users on 10/6. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/109:45 am -
1 stop13h 05m
Tue 1/510:45 pm -
1 stop10h 40m
Deal found 10/6![Avianca logo]()
$555
This American Airlines deal was found by Cheapflights users on 10/5. 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.
Thu 11/196:00 am -
2 stops14h 52m
Thu 11/269:20 am -
2 stops26h 26m
Deal found 10/5![American Airlines logo]()
$575
This Avianca deal was found by Cheapflights users on 10/6. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/213:10 pm -
1 stop7h 40m
Tue 12/110:45 pm -
1 stop8h 05m
Deal found 10/6![Avianca logo]()
$560
One-way flights from Costa Rica to OntarioSearch for one-way flight options from Costa Rica to Ontario. Find affordable one-way fares based on user searches. Data last updated October 9, 2026.
Search for one-way flight options from Costa Rica to Ontario. Find affordable one-way fares based on user searches. Data last updated October 9, 2026.
This Booking.com deal was found by Cheapflights users on 10/7. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/113:00 pm -
1 stop9h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/7![Multiple Airlines logo]()
$236
This American Airlines deal was found by Cheapflights users on 10/8. 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.
Wed 1/132:57 pm -
1 stop10h 16m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/8![American Airlines logo]()
$253
This Mytrip deal was found by Cheapflights users on 10/5. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/244:15 pm -
1 stop9h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/5![Multiple Airlines logo]()
$279
This Southwest deal was found by Cheapflights users on 10/4. 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.
Thu 11/192:15 pm -
1 stop9h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/4![Southwest logo]()
$306
This FlightHub deal was found by Cheapflights users on 10/7. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/1911:30 am -
1 stop22h 51m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/7![Frontier logo]()
$308
This Booking.com deal was found by Cheapflights users on 10/7. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/184:15 pm -
1 stop8h 04m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/7![Multiple Airlines logo]()
$310
This Booking.com deal was found by Cheapflights users on 10/5. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/104:15 pm -
1 stop9h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/5![Multiple Airlines logo]()
$312
This Southwest deal was found by Cheapflights users on 10/6. 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.
Thu 12/172:10 pm -
2 stops20h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/6![Southwest logo]()
$316
This Volaris deal was found by Cheapflights users on 10/4. 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 Volaris is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/224:15 pm -
1 stop9h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/4![Multiple Airlines logo]()
$322
Find flight deals from Costa Rica to Ontario
Keep the following information in mind while searching for Costa Rica to Ontario flight deals. Data was last updated October 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $531 (Avianca) |
One-way from | $236 (Booking.com) |
Popular in | July |
Cheapest in | February |
Average price | $514 |
Cheapflights Fare Finder
Customize your flight search to find flights from Costa Rica 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, Cheapflights users made 7,457,451 searches. Data last updated October 9, 2026.
Use the filters below to find and compare flights from Costa Rica to Ontario that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
San JoséOntario
SJO San José Juan Santamaria Intl - ONT Ontario
SJOONT
San José Juan Santamaria Intl
Tue 12/22
4:15 pm-11:58 pm
1 stop9h 43m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$322
San JoséOntario
SJO San José Juan Santamaria Intl - ONT Ontario
SJOONT
San José Juan Santamaria Intl
Tue 2/16
8:45 am-9:47 am
2 stops27h 02m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$323
San JoséOntario
SJO San José Juan Santamaria Intl - ONT Ontario
SJOONT
San José Juan Santamaria Intl
Thu 12/17
9:40 am-10:53 pm
1 stop15h 13m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$327
San JoséOntario
SJO San José Juan Santamaria Intl - ONT Ontario
SJOONT
San José Juan Santamaria Intl
Fri 12/18
7:30 am-12:42 pm
1 stop31h 12m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$333
San JoséOntario
SJO San José Juan Santamaria Intl - ONT Ontario
SJOONT
San José Juan Santamaria Intl
Sat 11/21
1:20 pm-10:25 pm
2 stops11h 05m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$338
San JoséOntario
SJO San José Juan Santamaria Intl - ONT Ontario
SJOONT
San José Juan Santamaria Intl
Mon 12/21
1:15 am-10:53 pm
2 stops23h 38m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$339
San JoséOntario
SJO San José Juan Santamaria Intl - ONT Ontario
SJOONT
San José Juan Santamaria Intl
Thu 12/10
7:00 am-9:55 pm
1 stop16h 55m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$356
San JoséOntario
SJO San José Juan Santamaria Intl - ONT Ontario
SJOONT
San José Juan Santamaria Intl
Tue 11/17
7:00 am-11:49 pm
2 stops18h 49m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$361
San JoséOntario
SJO San José Juan Santamaria Intl - ONT Ontario
SJOONT
San José Juan Santamaria Intl
Thu 11/19
7:00 am-11:49 pm
2 stops18h 49m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$361
San JoséOntario
SJO San José Juan Santamaria Intl - ONT Ontario
SJOONT
San José Juan Santamaria Intl
Wed 11/18
9:40 am-6:01 pm
1 stop10h 21m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$361
Showing 1-10 of 23 resultsSorted by cheapest first
Best time to book a flight from Costa Rica to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from Costa Rica with our price prediction graph.
SJO-ONT
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 Costa Rica to Ontario
CR0-ONT
SJO-ONT
What is the cheapest month to book a flight from Costa Rica to Ontario?
Currently, May is the cheapest month in which you can book a flight from Costa Rica to Ontario (average of $383). Flying from Costa Rica to Ontario in August is currently the most expensive (average of $894). 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 far ahead should I book a flight from Costa Rica to Ontario?
To ensure you get the cheapest price possible for a flight from Costa Rica to Ontario, you should look to book at least 35 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.
Reviews of airlines servicing Ontario
Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated October 9, 2026.
Read through reviews of airlines operating flights from Costa Rica to Ontario, such as United Airlines and Avianca. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Food
6.7
Entertainment
7.1
Comfort
7.3
Overall
7.4
Crew
8.1
Boarding
7.7
Reviews
1 / 20
10.0
ExcellentAnonymous,Sep 2025
FRA - SFO
Food
6.7
Entertainment
7.1
Comfort
7.3
Overall
7.4
Crew
8.1
Boarding
7.7
Reviews
1 / 20
10.0
ExcellentAnonymous,Sep 2025
FRA - SFO
Food
6.7
Entertainment
7.1
Comfort
7.3
Overall
7.4
Crew
8.1
Boarding
7.7
Reviews
1 / 20
10.0
ExcellentAnonymous,Sep 2025
FRA - SFO
Related info for your journey
Find useful and relevant information for your journey from Costa Rica to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Other flights to Ontario
Explore flights to Ontario departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 9, 2026.
Costa Rica and Ontario flights
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Top 2 airlines flying from Costa Rica to Ontario
Discover the top 2 airlines that operate flights from Costa Rica to Ontario. 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 7,457,451 searches. Data last updated October 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$267 | Average$469 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$387 | Average$530 | FlexibilityNo cancel fee | On-time71% |