$251+ Cheap flights from Ontario (ONT) to Costa Rica
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 12/9. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SJO
Nov 24 — Dec 11
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Costa Rica 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 Ontario to Costa Rica
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Cheapest flights from Ontario to Costa RicaExplore the most affordable flight options available from Ontario to Costa Rica. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 25, 2026.
Explore the most affordable flight options available from Ontario to Costa Rica. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 25, 2026.
This Mytrip deal was found by Cheapflights users on 10/24. 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.
Fri 12/46:00 am -
2 stops13h 52m
Tue 12/86:53 am -
2 stops13h 38m
Deal found 10/24![Multiple Airlines logo]()
$547
This Mytrip deal was found by Cheapflights users on 10/23. 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.
Wed 12/26:00 am -
2 stops13h 52m
Thu 12/103:00 pm -
1 stop9h 15m
Deal found 10/23![Multiple Airlines logo]()
$550
This American Airlines deal was found by Cheapflights users on 10/23. 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.
Sun 12/611:59 pm -
2 stops12h 20m
Sat 12/123:35 pm -
2 stops20h 07m
Deal found 10/23![American Airlines logo]()
$573
This Mytrip deal was found by Cheapflights users on 10/22. 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.
Fri 12/46:00 am -
2 stops13h 52m
Thu 12/103:00 pm -
1 stop9h 15m
Deal found 10/22![Multiple Airlines logo]()
$588
This Mytrip deal was found by Cheapflights users on 10/23. 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.
Sat 12/56:00 am -
2 stops13h 52m
Tue 12/86:53 am -
2 stops13h 38m
Deal found 10/23![Multiple Airlines logo]()
$600
This Avianca deal was found by Cheapflights users on 10/21. 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 11/710:45 pm -
1 stop8h 05m
Sat 11/143:10 pm -
1 stop7h 40m
Deal found 10/21![Avianca logo]()
$609
This Mytrip deal was found by Cheapflights users on 10/20. 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.
Wed 12/26:00 am -
2 stops13h 52m
Tue 12/86:53 am -
3 stops18h 30m
Deal found 10/20![Multiple Airlines logo]()
$618
This Mytrip deal was found by Cheapflights users on 10/23. 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 12/36:00 am -
2 stops13h 52m
Tue 12/86:53 am -
2 stops13h 38m
Deal found 10/23![Multiple Airlines logo]()
$625
This Avianca deal was found by Cheapflights users on 10/20. 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 11/1010:45 pm -
1 stop8h 05m
Tue 11/173:10 pm -
1 stop7h 40m
Deal found 10/20![Avianca logo]()
$629
This American Airlines deal was found by Cheapflights users on 10/24. 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.
Sat 11/1410:30 pm -
2 stops12h 03m
Sat 11/213:25 pm -
1 stop10h 34m
Deal found 10/24![American Airlines logo]()
$665
This United Airlines deal was found by Cheapflights users on 10/21. 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 11/295:00 am -
1 stop9h 10m
Tue 12/82:20 pm -
1 stop9h 39m
Deal found 10/21![United Airlines logo]()
$701
This United Airlines deal was found by Cheapflights users on 10/22. 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 12/286:00 am -
2 stops29h 10m
Wed 1/132:20 pm -
1 stop9h 55m
Deal found 10/22![United Airlines logo]()
$705
Best flights from Ontario to Costa RicaDiscover carefully curated flight deals from Ontario to Costa Rica that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 25, 2026.
Discover carefully curated flight deals from Ontario to Costa Rica that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 25, 2026.
This United Airlines deal was found by Cheapflights users on 10/22. 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 1/225:00 am -
1 stop9h 10m
Fri 1/292:20 pm -
1 stop9h 55m
Deal found 10/22![United Airlines logo]()
$721
This Volaris deal was found by Cheapflights users on 10/21. 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.
Fri 12/412:05 am -
1 stop20h 39m
Sat 12/123:00 pm -
1 stop10h 58m
Deal found 10/21![Multiple Airlines logo]()
$732
This United Airlines deal was found by Cheapflights users on 10/20. 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 12/35:45 am -
1 stop29h 25m
Sun 12/139:25 am -
1 stop13h 13m
Deal found 10/20![United Airlines logo]()
$757
This United Airlines deal was found by Cheapflights users on 10/23. 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 1/71:42 pm -
2 stops21h 28m
Sun 1/172:20 pm -
2 stops21h 37m
Deal found 10/23![United Airlines logo]()
$765
This United Airlines deal was found by Cheapflights users on 10/24. 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 12/84:17 pm -
2 stops21h 53m
Wed 5/51:20 pm -
2 stops21h 37m
Deal found 10/24![United Airlines logo]()
$780
This United Airlines deal was found by Cheapflights users on 10/22. 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 3/176:00 am -
1 stop12h 39m
Tue 3/308:45 am -
1 stop15h 21m
Deal found 10/22![United Airlines logo]()
$781
This United Airlines deal was found by Cheapflights users on 10/22. 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 3/166:00 am -
1 stop12h 39m
Tue 3/308:45 am -
1 stop10h 02m
Deal found 10/22![United Airlines logo]()
$781
This United Airlines deal was found by Cheapflights users on 10/21. 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 2/226:00 am -
1 stop12h 39m
Wed 3/177:45 am -
2 stops13h 34m
Deal found 10/21![United Airlines logo]()
$785
This United Airlines deal was found by Cheapflights users on 10/23. 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 12/285:55 am -
1 stop27h 29m
Mon 1/118:45 am -
1 stop15h 30m
Deal found 10/23![United Airlines logo]()
$802
This United Airlines deal was found by Cheapflights users on 10/23. 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 2/95:00 am -
2 stops13h 39m
Tue 2/162:25 pm -
1 stop9h 34m
Deal found 10/23![United Airlines logo]()
$805
This United Airlines deal was found by Cheapflights users on 10/23. 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 1/195:00 am -
1 stop9h 10m
Sat 1/231:00 pm -
1 stop10h 00m
Deal found 10/23![United Airlines logo]()
$809
This United Airlines deal was found by Cheapflights users on 10/22. 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 11/84:17 pm -
1 stop14h 15m
Sun 11/2212:35 pm -
1 stop11h 06m
Deal found 10/22![United Airlines logo]()
$811
This United Airlines deal was found by Cheapflights users on 10/23. 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 12/54:17 pm -
1 stop14h 15m
Tue 12/89:40 am -
1 stop9h 56m
Deal found 10/23![United Airlines logo]()
$811
This United Airlines deal was found by Cheapflights users on 10/22. 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 11/161:35 pm -
1 stop16h 57m
Thu 11/2612:35 pm -
1 stop9h 07m
Deal found 10/22![United Airlines logo]()
$811
This United Airlines deal was found by Cheapflights users on 10/24. 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 2/235:00 am -
2 stops11h 16m
Thu 2/259:40 am -
1 stop9h 55m
Deal found 10/24![United Airlines logo]()
$815
This United Airlines deal was found by Cheapflights users on 10/22. 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 11/286:00 am -
1 stop12h 39m
Fri 12/48:45 am -
2 stops13h 53m
Deal found 10/22![United Airlines logo]()
$815
This United Airlines deal was found by Cheapflights users on 10/23. 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 12/111:20 am -
2 stops24h 02m
Mon 12/78:45 am -
1 stop15h 14m
Deal found 10/23![United Airlines logo]()
$815
This United Airlines deal was found by Cheapflights users on 10/20. 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 1/135:00 am -
1 stop9h 10m
Wed 1/271:00 pm -
1 stop10h 00m
Deal found 10/20![United Airlines logo]()
$846
This United Airlines deal was found by Cheapflights users on 10/23. 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 12/286:00 am -
2 stops29h 10m
Tue 1/121:00 pm -
1 stop10h 00m
Deal found 10/23![United Airlines logo]()
$850
This United Airlines deal was found by Cheapflights users on 10/23. 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 1/125:00 am -
1 stop9h 10m
Sat 1/162:20 pm -
1 stop9h 55m
Deal found 10/23![United Airlines logo]()
$850
This United Airlines deal was found by Cheapflights users on 10/23. 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 12/286:00 am -
2 stops27h 24m
Thu 1/72:06 pm -
2 stops32h 54m
Deal found 10/23![United Airlines logo]()
$850
This United Airlines deal was found by Cheapflights users on 10/21. 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 11/35:00 am -
1 stop9h 10m
Sun 11/88:45 am -
2 stops13h 30m
Deal found 10/21![United Airlines logo]()
$893
This United Airlines deal was found by Cheapflights users on 10/21. 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 10/311:29 pm -
2 stops22h 41m
Wed 11/41:00 pm -
2 stops25h 29m
Deal found 10/21![United Airlines logo]()
$893
Last-minute flights from Ontario to Costa RicaDiscover last-minute flight deals from Ontario to Costa Rica. Data last updated October 25, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Costa Rica. Data last updated October 25, 2026 and is based on user searches.
This Avianca deal was found by Cheapflights users on 10/20. 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 10/2211:35 pm -
1 stop10h 55m
Tue 10/279:45 am -
1 stop13h 05m
Deal found 10/20![Avianca logo]()
$669
This Super.com deal was found by Cheapflights users on 10/21. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2911:45 pm -
1 stop18h 05m
Tue 11/33:10 pm -
1 stop7h 40m
Deal found 10/21![Avianca logo]()
$662
This Ticket deal was found by Cheapflights users on 10/20. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/510:45 pm -
1 stop8h 05m
Mon 11/97:45 pm -
1 stop27h 05m
Deal found 10/20![Avianca logo]()
$663
This Avianca deal was found by Cheapflights users on 10/21. 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 11/710:45 pm -
1 stop8h 05m
Sat 11/143:10 pm -
1 stop7h 40m
Deal found 10/21![Avianca logo]()
$609
This Avianca deal was found by Cheapflights users on 10/20. 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 11/1010:45 pm -
1 stop8h 05m
Tue 11/173:10 pm -
1 stop7h 40m
Deal found 10/20![Avianca logo]()
$629
This Super.com deal was found by Cheapflights users on 10/22. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1010:45 pm -
1 stop10h 40m
Thu 11/129:45 am -
1 stop13h 05m
Deal found 10/22![Avianca logo]()
$645
This Super.com deal was found by Cheapflights users on 10/21. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1210:45 pm -
1 stop10h 40m
Mon 11/167:45 pm -
1 stop27h 05m
Deal found 10/21![Avianca logo]()
$650
This American Airlines deal was found by Cheapflights users on 10/24. 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.
Sat 11/1410:30 pm -
2 stops12h 03m
Sat 11/213:25 pm -
1 stop10h 34m
Deal found 10/24![American Airlines logo]()
$665
This Mytrip deal was found by Cheapflights users on 10/21. 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.
Sun 11/156:30 am -
2 stops13h 22m
Sun 11/224:15 pm -
2 stops24h 36m
Deal found 10/21![Multiple Airlines logo]()
$660
This Avianca deal was found by Cheapflights users on 10/20. 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 11/1710:45 pm -
1 stop8h 05m
Tue 11/249:45 am -
1 stop13h 05m
Deal found 10/20![Avianca logo]()
$659
This Mytrip deal was found by Cheapflights users on 10/20. 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.
Tue 11/2410:40 pm -
3 stops21h 12m
Thu 12/33:00 pm -
1 stop9h 15m
Deal found 10/20![Multiple Airlines logo]()
$664
This Avianca deal was found by Cheapflights users on 10/23. 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 11/2810:45 pm -
1 stop8h 05m
Thu 12/33:10 pm -
1 stop7h 40m
Deal found 10/23![Avianca logo]()
$639
One-way flights from Ontario to Costa RicaSearch for one-way flight options from Ontario to Costa Rica. Find affordable one-way fares based on user searches. Data last updated October 25, 2026.
Search for one-way flight options from Ontario to Costa Rica. Find affordable one-way fares based on user searches. Data last updated October 25, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/24. 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.
Wed 12/92:53 pm -
3 stops32h 32m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![Multiple Airlines logo]()
$251
This CheapOair deal was found by Cheapflights users on 10/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/1012:05 am -
1 stop20h 39m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Multiple Airlines logo]()
$253
This CheapOair deal was found by Cheapflights users on 10/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/1512:05 am -
1 stop20h 39m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Multiple Airlines logo]()
$271
This Southwest deal was found by Cheapflights users on 10/19. 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.
Mon 3/18:30 pm -
2 stops14h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/19![Southwest logo]()
$272
This CheapOair deal was found by Cheapflights users on 10/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/84:14 pm -
1 stop18h 01m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Frontier logo]()
$281
This Kiwi.com deal was found by Cheapflights users on 10/23. 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.
Wed 1/63:33 pm -
2 stops31h 57m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Multiple Airlines logo]()
$286
This Frontier deal was found by Cheapflights users on 10/21. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/37:10 pm -
1 stop13h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Frontier logo]()
$292
This Southwest deal was found by Cheapflights users on 10/20. 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.
Fri 11/278:45 pm -
2 stops13h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Southwest logo]()
$298
This Mytrip deal was found by Cheapflights users on 10/23. 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.
Wed 12/26:00 am -
2 stops13h 52m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Multiple Airlines logo]()
$301
This Mytrip deal was found by Cheapflights users on 10/21. 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.
Wed 11/115:07 pm -
3 stops28h 52m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Multiple Airlines logo]()
$305
This American Airlines deal was found by Cheapflights users on 10/24. 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.
Tue 1/192:21 pm -
2 stops21h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![American Airlines logo]()
$371
This United Airlines deal was found by Cheapflights users on 10/20. 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 1/205:00 am -
1 stop9h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![United Airlines logo]()
$376
Find flight deals from Ontario to Costa Rica
Keep the following information in mind while searching for Ontario to Costa Rica flight deals. Data was last updated October 25, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $482 (Gotogate) |
One-way from | $251 (Kiwi.com) |
Popular in | December |
Cheapest in | February |
Average price | $654 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Costa Rica 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 25, 2026.
Use the filters below to find and compare flights from Ontario to Costa Rica that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioSan José
ONT Ontario - SJO San José Juan Santamaria Intl
ONTSJO
Ontario
Mon 3/1
6:35 pm-8:32 am
1 stop11h 57m
San José Juan Santamaria Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$314
OntarioSan José
ONT Ontario - SJO San José Juan Santamaria Intl
ONTSJO
Ontario
Sat 11/28
7:05 am-10:15 pm
1 stop13h 10m
San José Juan Santamaria Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$343
OntarioSan José
ONT Ontario - SJO San José Juan Santamaria Intl
ONTSJO
Ontario
Tue 11/3
5:00 pm-12:20 pm
2 stops17h 20m
San José Juan Santamaria Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$346
OntarioLiberia
ONT Ontario - LIR Liberia
ONTLIR
Ontario
Wed 1/6
2:00 pm-1:10 pm
2 stops21h 10m
Liberia
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$376
OntarioLiberia
ONT Ontario - LIR Liberia
ONTLIR
Ontario
Sun 1/3
5:55 am-6:37 pm
1 stop10h 42m
Liberia
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$376
OntarioSan José
ONT Ontario - SJO San José Juan Santamaria Intl
ONTSJO
Ontario
Tue 1/12
2:00 pm-8:32 am
1 stop16h 32m
San José Juan Santamaria Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$379
OntarioSan José
ONT Ontario - SJO San José Juan Santamaria Intl
ONTSJO
Ontario
Wed 2/24
5:00 am-6:16 pm
2 stops11h 16m
San José Juan Santamaria Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$379
OntarioSan José
ONT Ontario - SJO San José Juan Santamaria Intl
ONTSJO
Ontario
Sun 2/21
11:20 am-8:32 am
1 stop19h 12m
San José Juan Santamaria Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$379
OntarioLiberia
ONT Ontario - LIR Liberia
ONTLIR
Ontario
Wed 12/9
11:20 am-4:10 pm
2 stops26h 50m
Liberia
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$382
OntarioLiberia
ONT Ontario - LIR Liberia
ONTLIR
Ontario
Sat 10/31
12:43 pm-12:33 pm
2 stops22h 50m
Liberia
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$384
Showing 1-10 of 44 resultsSorted by cheapest first
Best time to book a flight from Ontario to Costa Rica
Have a flexible travel schedule? Discover the best time to fly to Costa Rica from Ontario with our price prediction graph.
ONT-LIR
ONT-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 Ontario to Costa Rica
ONT-CR0
ONT-LIR
ONT-SJO
What is the cheapest month to book a flight from Ontario to Costa Rica?
Currently, December is the cheapest month in which you can book a flight from Ontario to Costa Rica (average of $390). Flying from Ontario to Costa Rica in July is currently the most expensive (average of $760). 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.
Reviews of airlines servicing Costa Rica
Get insights into the airlines that provide service to Costa Rica. 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 Costa Rica. Reviews last updated October 25, 2026.
See what other customers who have flown with United Airlines,American Airlines, andAvianca from Ontario to Costa Rica have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.3
Overall
7.3
Crew
8.1
Entertainment
7.1
Food
6.7
Boarding
7.7
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - EWR
Comfort
7.3
Overall
7.3
Crew
8.1
Entertainment
7.1
Food
6.7
Boarding
7.7
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - EWR
Comfort
7.3
Overall
7.3
Crew
8.1
Entertainment
7.1
Food
6.7
Boarding
7.7
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - EWR
Comfort
7.3
Overall
7.3
Crew
8.1
Entertainment
7.1
Food
6.7
Boarding
7.7
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - EWR
Related info for your journey
Find useful and relevant information for your journey from Ontario to Costa Rica. 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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Alternative routes for Ontario to Costa Rica
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Complete your trip
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Find flights from Ontario to Costa Rica, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Ontario and Costa Rica flights
Browse other Ontario and Costa Rica flight options. Last updated on October 25, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 3 airlines flying from Ontario to Costa Rica
Discover the top 3 airlines that operate flights from Ontario to Costa Rica. 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 25, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$371 | Average$629 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$393 | Average$531 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$404 | Average$529 | FlexibilityNo cancel fee | On-time71% |