$481+ Cheap flights from Ontario (ONT) to Seoul (SEL)
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 8/15. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SEL
Jun 12 — Jun 191
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Seoul 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
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Cheapest flights from Ontario to SeoulExplore the most affordable flight options available from Ontario to Seoul. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 13, 2026.
Explore the most affordable flight options available from Ontario to Seoul. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 13, 2026.
This Alaska Airlines deal was found by Cheapflights users on 5/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/239:20 pm
ONT
- ICN
1 stop28h 10m
Alaska Airlines
Fri 8/77:35 pm
ICN
- ONT
1 stop19h 36m
Alaska Airlines
Deal found 5/8![Alaska Airlines logo]()
$1,014
This SmartFares deal was found by Cheapflights users on 5/9. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1412:10 am
ONT
- ICN
1 stop27h 25m
China Airlines
Thu 10/2212:35 pm
ICN
- ONT
1 stop21h 25m
China Airlines
Deal found 5/9![China Airlines logo]()
$1,092
This SmartFares deal was found by Cheapflights users on 5/12. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1112:10 am
ONT
- ICN
1 stop27h 25m
China Airlines
Wed 10/288:15 pm
ICN
- ONT
1 stop37h 35m
China Airlines
Deal found 5/12![China Airlines logo]()
$1,093
This SmartFares deal was found by Cheapflights users on 5/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1012:45 am
ONT
- ICN
1 stop26h 20m
China Airlines
Tue 8/2512:45 pm
ICN
- ONT
1 stop21h 55m
China Airlines
Deal found 5/10![China Airlines logo]()
$1,096
This SmartFares deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/112:10 am
ONT
- ICN
1 stop27h 25m
China Airlines
Wed 10/1412:35 pm
ICN
- ONT
1 stop21h 25m
China Airlines
Deal found 5/11![China Airlines logo]()
$1,098
This SmartFares deal was found by Cheapflights users on 5/9. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2912:45 am
ONT
- ICN
1 stop26h 20m
China Airlines
Sat 9/1212:45 pm
ICN
- ONT
1 stop21h 55m
China Airlines
Deal found 5/9![China Airlines logo]()
$1,099
This lol.travel deal was found by Cheapflights users on 5/8. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/212:00 pm
ONT
- ICN
2 stops36h 15m
Qatar Airways
Sun 11/1512:20 am
ICN
- ONT
2 stops34h 53m
Qatar Airways
Deal found 5/8![Qatar Airways logo]()
$1,115
This Super.com deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/212:45 am
ONT
- ICN
1 stop26h 20m
China Airlines
Thu 9/1012:45 pm
ICN
- ONT
1 stop21h 55m
China Airlines
Deal found 5/11![China Airlines logo]()
$1,119
This Super.com deal was found by Cheapflights users on 5/12. 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 8/1112:45 am
ONT
- ICN
1 stop26h 20m
China Airlines
Wed 8/1912:45 pm
ICN
- ONT
1 stop21h 55m
China Airlines
Deal found 5/12![China Airlines logo]()
$1,123
This SmartFares deal was found by Cheapflights users on 5/12. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/712:45 am
ONT
- ICN
1 stop18h 45m
China Airlines
Wed 9/3012:35 pm
ICN
- ONT
1 stop21h 25m
China Airlines
Deal found 5/12![China Airlines logo]()
$1,131
This oojo deal was found by Cheapflights users on 5/12. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/3112:45 am
ONT
- ICN
1 stop26h 20m
China Airlines
Thu 9/108:05 pm
ICN
- ONT
1 stop38h 35m
China Airlines
Deal found 5/12![China Airlines logo]()
$1,133
This SmartFares deal was found by Cheapflights users on 5/8. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/3012:45 am
ONT
- ICN
1 stop18h 45m
China Airlines
Sun 9/1312:45 pm
ICN
- ONT
1 stop21h 55m
China Airlines
Deal found 5/8![China Airlines logo]()
$1,134
Best flights from Ontario to SeoulDiscover carefully curated flight deals from Ontario to Seoul that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 13, 2026.
Discover carefully curated flight deals from Ontario to Seoul that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 13, 2026.
This China Airlines deal was found by Cheapflights users on 5/9. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/510:50 pm
ONT
- ICN
1 stop19h 30m
China Airlines
Sat 11/1412:30 pm
ICN
- ONT
1 stop21h 20m
China Airlines
Deal found 5/9![China Airlines logo]()
$1,218
This Qatar Airways deal was found by Cheapflights users on 5/9. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2912:10 pm
ONT
- ICN
2 stops36h 55m
Qatar Airways
Tue 10/61:20 am
ICN
- ONT
2 stops32h 40m
Qatar Airways
Deal found 5/9![Qatar Airways logo]()
$1,221
This EVA Air deal was found by Cheapflights users on 5/9. 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 EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/196:54 pm
ONT
- ICN
2 stops24h 06m
Multiple Airlines
Wed 11/1111:40 am
ICN
- ONT
2 stops40h 29m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$1,304
This United Airlines deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/296:39 pm
ONT
- ICN
1 stop17h 41m
United Airlines
Sun 8/2311:30 am
ICN
- ONT
1 stop16h 42m
United Airlines
Deal found 5/12![United Airlines logo]()
$1,392
This Qatar Airways deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/2612:10 pm
ONT
- ICN
2 stops36h 55m
Qatar Airways
Fri 11/612:20 am
ICN
- ONT
2 stops35h 08m
Qatar Airways
Deal found 5/11![Qatar Airways logo]()
$1,251
This United Airlines deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/26:00 am
ONT
- ICN
1 stop17h 00m
United Airlines
Mon 6/1511:30 am
ICN
- ONT
1 stop16h 42m
United Airlines
Deal found 5/11![United Airlines logo]()
$1,430
This China Airlines deal was found by Cheapflights users on 5/12. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/3012:10 am
ONT
- ICN
1 stop27h 25m
China Airlines
Sat 10/1012:35 pm
ICN
- ONT
1 stop21h 25m
China Airlines
Deal found 5/12![China Airlines logo]()
$1,459
This Qatar Airways deal was found by Cheapflights users on 5/12. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2112:10 pm
ONT
- ICN
2 stops36h 55m
Qatar Airways
Mon 9/281:20 am
ICN
- ONT
2 stops33h 43m
Qatar Airways
Deal found 5/12![Qatar Airways logo]()
$1,382
This United Airlines deal was found by Cheapflights users on 5/12. 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 6/11:50 pm
ONT
- ICN
1 stop22h 30m
United Airlines
Sun 6/711:30 am
ICN
- ONT
1 stop16h 42m
United Airlines
Deal found 5/12![United Airlines logo]()
$1,505
This Qatar Airways deal was found by Cheapflights users on 5/8. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2312:10 pm
ONT
- ICN
2 stops36h 55m
Qatar Airways
Thu 10/81:20 am
ICN
- ONT
2 stops38h 22m
Qatar Airways
Deal found 5/8![Qatar Airways logo]()
$1,382
This Qatar Airways deal was found by Cheapflights users on 5/8. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/196:00 am
ONT
- ICN
2 stops43h 05m
Qatar Airways
Tue 9/11:20 am
ICN
- ONT
2 stops38h 04m
Qatar Airways
Deal found 5/8![Qatar Airways logo]()
$1,473
This Mytrip deal was found by Cheapflights users on 5/13. 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.
Mon 7/1312:45 am
ONT
- GMP
2 stops25h 30m
Multiple Airlines
Sat 7/188:10 am
GMP
- ONT
2 stops26h 30m
Multiple Airlines
Deal found 5/13![Multiple Airlines logo]()
$1,965
This United Airlines deal was found by Cheapflights users on 5/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/251:50 pm
ONT
- ICN
1 stop22h 30m
United Airlines
Mon 6/811:30 am
ICN
- ONT
1 stop16h 42m
United Airlines
Deal found 5/9![United Airlines logo]()
$1,630
This Mytrip deal was found by Cheapflights users on 5/12. 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.
Mon 6/812:10 am
ONT
- GMP
1 stop25h 15m
Multiple Airlines
Tue 6/1611:15 am
GMP
- ONT
1 stop22h 45m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$2,029
This EVA Air deal was found by Cheapflights users on 5/9. 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 EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/129:20 pm
ONT
- GMP
2 stops28h 50m
Multiple Airlines
Sat 7/251:50 pm
GMP
- ONT
2 stops37h 21m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$2,056
This Japan Airlines deal was found by Cheapflights users on 5/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/145:34 am
ONT
- GMP
2 stops23h 41m
Multiple Airlines
Tue 7/217:15 pm
GMP
- ONT
2 stops37h 42m
Multiple Airlines
Deal found 5/10![Multiple Airlines logo]()
$2,100
This Booking.com deal was found by Cheapflights users on 5/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/412:45 am
ONT
- GMP
2 stops23h 30m
Multiple Airlines
Sat 7/189:15 am
GMP
- ONT
2 stops25h 25m
Multiple Airlines
Deal found 5/10![Multiple Airlines logo]()
$2,204
This Mytrip deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/2412:10 am
ONT
- GMP
2 stops28h 00m
Multiple Airlines
Thu 7/28:10 am
GMP
- ONT
2 stops26h 30m
Multiple Airlines
Deal found 5/11![Multiple Airlines logo]()
$2,297
This Mytrip deal was found by Cheapflights users on 5/12. 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 6/1012:10 am
ONT
- GMP
2 stops25h 50m
Multiple Airlines
Fri 6/1911:25 am
GMP
- ONT
2 stops21h 40m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$2,317
This Japan Airlines deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/511:59 pm
ONT
- GMP
2 stops29h 16m
Multiple Airlines
Tue 7/148:00 am
GMP
- ONT
2 stops24h 30m
Multiple Airlines
Deal found 5/11![Multiple Airlines logo]()
$2,356
This Japan Airlines deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/45:34 am
ONT
- GMP
2 stops23h 41m
Multiple Airlines
Mon 7/137:15 pm
GMP
- ONT
2 stops32h 30m
Multiple Airlines
Deal found 5/11![Multiple Airlines logo]()
$3,266
This Japan Airlines deal was found by Cheapflights users on 5/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/1811:59 pm
ONT
- GMP
2 stops29h 16m
Multiple Airlines
Sun 6/217:15 pm
GMP
- ONT
2 stops32h 34m
Multiple Airlines
Deal found 5/10![Multiple Airlines logo]()
$3,476
Last-minute flights from Ontario to SeoulDiscover last-minute flight deals from Ontario to Seoul. Data last updated May 13, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Seoul. Data last updated May 13, 2026 and is based on user searches.
This Super.com deal was found by Cheapflights users on 5/8. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/1112:10 am
ONT
- ICN
1 stop26h 55m
China Airlines
Thu 5/1412:45 pm
ICN
- ONT
1 stop21h 15m
China Airlines
Deal found 5/8![China Airlines logo]()
$1,230
This oojo deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/1112:10 am
ONT
- ICN
1 stop26h 55m
China Airlines
Tue 5/1912:45 pm
ICN
- ONT
1 stop21h 15m
China Airlines
Deal found 5/11![China Airlines logo]()
$1,287
This oojo deal was found by Cheapflights users on 5/8. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/1112:10 am
ONT
- ICN
1 stop26h 55m
China Airlines
Wed 6/38:05 pm
ICN
- ONT
1 stop37h 55m
China Airlines
Deal found 5/8![China Airlines logo]()
$1,291
This United Airlines deal was found by Cheapflights users on 5/12. 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 5/136:00 am
ONT
- ICN
1 stop17h 00m
United Airlines
Wed 5/2011:30 am
ICN
- ONT
1 stop14h 11m
United Airlines
Deal found 5/12![United Airlines logo]()
$1,342
This Super.com deal was found by Cheapflights users on 5/13. 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 5/1412:10 am
ONT
- ICN
1 stop26h 55m
China Airlines
Wed 5/2712:45 pm
ICN
- ONT
1 stop21h 15m
China Airlines
Deal found 5/13![China Airlines logo]()
$1,274
This China Airlines deal was found by Cheapflights users on 5/12. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/1412:10 am
ONT
- ICN
1 stop26h 55m
China Airlines
Sat 6/612:45 pm
ICN
- ONT
1 stop21h 15m
China Airlines
Deal found 5/12![China Airlines logo]()
$1,302
This China Airlines deal was found by Cheapflights users on 5/12. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/1412:10 am
ONT
- ICN
1 stop26h 55m
China Airlines
Sat 8/158:05 pm
ICN
- ONT
1 stop38h 35m
China Airlines
Deal found 5/12![China Airlines logo]()
$1,331
This oojo deal was found by Cheapflights users on 5/12. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/1712:10 am
ONT
- ICN
1 stop26h 55m
China Airlines
Mon 6/1512:45 pm
ICN
- ONT
1 stop21h 15m
China Airlines
Deal found 5/12![China Airlines logo]()
$1,203
This oojo deal was found by Cheapflights users on 5/12. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/1712:10 am
ONT
- ICN
1 stop26h 55m
China Airlines
Thu 5/288:05 pm
ICN
- ONT
1 stop37h 55m
China Airlines
Deal found 5/12![China Airlines logo]()
$1,247
This China Airlines deal was found by Cheapflights users on 5/12. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/1712:10 am
ONT
- ICN
1 stop26h 55m
China Airlines
Tue 6/912:45 pm
ICN
- ONT
1 stop21h 15m
China Airlines
Deal found 5/12![China Airlines logo]()
$1,268
This Super.com deal was found by Cheapflights users on 5/12. 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 5/1912:10 am
ONT
- ICN
1 stop26h 55m
China Airlines
Fri 5/2912:45 pm
ICN
- ONT
1 stop21h 15m
China Airlines
Deal found 5/12![China Airlines logo]()
$1,297
This United Airlines deal was found by Cheapflights users on 5/12. 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 5/206:00 am
ONT
- ICN
1 stop17h 00m
United Airlines
Thu 5/2811:30 am
ICN
- ONT
2 stops21h 58m
United Airlines
Deal found 5/12![United Airlines logo]()
$1,346
One-way flights from Ontario to SeoulSearch for one-way flight options from Ontario to Seoul. Find affordable one-way fares based on user searches. Data last updated May 13, 2026.
Search for one-way flight options from Ontario to Seoul. Find affordable one-way fares based on user searches. Data last updated May 13, 2026.
This Trip.com deal was found by Cheapflights users on 5/8. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/158:39 pm
ONT
- ICN
1 stop31h 31m
Multiple Airlines
Deal found 5/8![Multiple Airlines logo]()
$481
This Kiwi.com deal was found by Cheapflights users on 5/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/208:33 pm
ONT
- ICN
1 stop31h 37m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$486
This Vliegwinkel deal was found by Cheapflights users on 5/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/1412:04 pm
ONT
- ICN
1 stop37h 26m
Alaska Airlines
Deal found 5/10![Alaska Airlines logo]()
$487
This Alaska Airlines deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/226:02 am
ONT
- ICN
1 stop19h 28m
Alaska Airlines
Deal found 5/11![Alaska Airlines logo]()
$488
This Alaska Airlines deal was found by Cheapflights users on 5/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/106:02 am
ONT
- ICN
1 stop19h 28m
Alaska Airlines
Deal found 5/10![Alaska Airlines logo]()
$495
This Alaska Airlines deal was found by Cheapflights users on 5/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/2112:04 pm
ONT
- ICN
1 stop37h 26m
Alaska Airlines
Deal found 5/8![Alaska Airlines logo]()
$501
This Alaska Airlines deal was found by Cheapflights users on 5/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/99:20 pm
ONT
- ICN
1 stop28h 10m
Alaska Airlines
Deal found 5/10![Alaska Airlines logo]()
$508
This Kiwi.com deal was found by Cheapflights users on 5/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/188:33 pm
ONT
- ICN
1 stop31h 37m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$515
This Alaska Airlines deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/206:02 am
ONT
- ICN
1 stop19h 28m
Alaska Airlines
Deal found 5/12![Alaska Airlines logo]()
$538
This Kiwi.com deal was found by Cheapflights users on 5/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/178:39 pm
ONT
- ICN
2 stops41h 21m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$542
This Alaska Airlines deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/196:02 am
ONT
- ICN
1 stop19h 28m
Alaska Airlines
Deal found 5/12![Alaska Airlines logo]()
$545
This Kiwi.com deal was found by Cheapflights users on 5/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/185:43 pm
ONT
- GMP
3 stops54h 32m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$565
Find flight deals from Ontario to Seoul
Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Seoul (SEL). 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 May 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,014 (Alaska Airlines) |
One-way from | $481 (Trip.com) |
Popular in | December |
Cheapest in | September |
Average price | $1,035 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Seoul 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 May 13, 2026.
Use the filters below to find and compare flights from Ontario to Seoul that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioIncheon
ONT - ICN
ONTICN
Ontario
Thu 11/5
10:50 pm-11:20 am
1 stop19h 30m
Incheon Intl
Sat 11/14
12:30 pm-4:50 pm
1 stop21h 20m
$1,218
OntarioIncheon
ONT - ICN
ONTICN
Ontario
Tue 9/29
12:10 pm-5:05 pm
2 stops36h 55m
Incheon Intl
Tue 10/6
1:20 am-6:00 pm
2 stops32h 40m
$1,221
OntarioIncheon
ONT - ICN
ONTICN
Ontario
Sat 9/26
12:10 pm-5:05 pm
2 stops36h 55m
Incheon Intl
Fri 11/6
12:20 am-6:28 pm
2 stops35h 08m
$1,251
OntarioIncheon
ONT - ICN
ONTICN
Ontario
Mon 10/19
6:54 pm-11:00 am
2 stops24h 06m
Incheon Intl
Wed 11/11
11:40 am-11:09 am
2 stops40h 29m
$1,304
OntarioIncheon
ONT - ICN
ONTICN
Ontario
Mon 9/21
12:10 pm-5:05 pm
2 stops36h 55m
Incheon Intl
Mon 9/28
1:20 am-7:03 pm
2 stops33h 43m
$1,382
OntarioIncheon
ONT - ICN
ONTICN
Ontario
Wed 9/23
12:10 pm-5:05 pm
2 stops36h 55m
Incheon Intl
Thu 10/8
1:20 am-11:42 pm
2 stops38h 22m
$1,382
OntarioIncheon
ONT - ICN
ONTICN
Ontario
Wed 7/29
6:39 pm-4:20 am
1 stop17h 41m
Incheon Intl
Sun 8/23
11:30 am-12:12 pm
1 stop16h 42m
$1,392
Quickest round-trip
OntarioIncheon
ONT - ICN
ONTICN
Ontario
Tue 6/2
6:00 am-3:00 pm
1 stop17h 00m
Incheon Intl
Mon 6/15
11:30 am-12:12 pm
1 stop16h 42m
$1,430
OntarioIncheon
ONT - ICN
ONTICN
Ontario
Wed 9/30
12:10 am-7:35 pm
1 stop27h 25m
Incheon Intl
Sat 10/10
12:35 pm-6:00 pm
1 stop21h 25m
$1,459
OntarioIncheon
ONT - ICN
ONTICN
Ontario
Wed 8/19
6:00 am-5:05 pm
2 stops43h 05m
Incheon Intl
Tue 9/1
1:20 am-11:24 pm
2 stops38h 04m
$1,473
Showing 1-10 of 44 resultsSorted by cheapest first
Compare providers for flights from Ontario to Seoul
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 Ontario to Seoul in May.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on Ontario-Seoul flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Seoul flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Seoul flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Ontario-Seoul 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 Ontario-Seoul 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 Ontario to Seoul
Have a flexible travel schedule? Discover the best time to fly to Seoul from Ontario with our price prediction graph.
ONT-SEL
ONT-ICN
ONT-GMP
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 Seoul
ONT-SEL
ONT-ICN
ONT-GMP
No data available for this route at this time. Please check back soon.
Reviews of airlines servicing Seoul
Get insights into the airlines that provide service to Seoul. 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 Seoul. Reviews last updated May 13, 2026.
Get a feel of what it's like to fly with China Airlines from Ontario to Seoul by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.3
Overall
8.3
Entertainment
8.0
Crew
8.5
Food
7.8
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentA,Feb 2026
SEA - TPE
Boarding
8.3
Overall
8.3
Entertainment
8.0
Crew
8.5
Food
7.8
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentA,Feb 2026
SEA - TPE
Related info for your journey
Find useful and relevant information for your journey from Ontario to Seoul. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Popular flights
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Alternative routes for Ontario to Seoul
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Complete your trip
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Search flights from Ontario to Seoul by cabin class
Find flights from Ontario to Seoul, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Ontario and Seoul flights
Browse other Ontario and Seoul flight options. Last updated on May 13, 2026.
Other flights from Ontario
Browse through other flights departing from Ontario. Flights are based on user searches made on Cheapflights and were last updated on May 13, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to Seoul
Explore flights to Seoul departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on May 13, 2026.
Top airline flying from Ontario to Seoul
Discover the top airline that operate flights from Ontario to Seoul. 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 May 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$860 | Average$989 | FlexibilityNo cancel fee | On-time70% |