$379+ 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 7/29. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SEL
Jul 26 — Aug 21
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 June 26, 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 June 26, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/13:13 pm
ONT
- ICN
1 stop38h 27m
Multiple Airlines
Mon 9/77:15 pm
ICN
- ONT
1 stop34h 48m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$956
This Kiwi.com deal was found by Cheapflights users on 6/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/13:13 pm
ONT
- ICN
1 stop38h 27m
Multiple Airlines
Tue 9/88:30 pm
ICN
- ONT
2 stops57h 33m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$964
This Kiwi.com deal was found by Cheapflights users on 6/25. 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 8/58:58 am
ONT
- ICN
1 stop20h 42m
Multiple Airlines
Thu 8/271:50 pm
ICN
- ONT
2 stops24h 20m
Multiple Airlines
Deal found 6/25![Multiple Airlines logo]()
$967
This Kiwi.com deal was found by Cheapflights users on 6/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/13:13 pm
ONT
- ICN
1 stop38h 27m
Multiple Airlines
Wed 9/97:15 pm
ICN
- ONT
1 stop34h 45m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$973
This lol.travel deal was found by Cheapflights users on 6/24. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/36:02 am
ONT
- ICN
1 stop19h 28m
Alaska Airlines
Wed 8/197:35 pm
ICN
- ONT
1 stop19h 49m
Alaska Airlines
Deal found 6/24![Alaska Airlines logo]()
$1,011
This Kiwi.com deal was found by Cheapflights users on 6/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/13:13 pm
ONT
- ICN
1 stop38h 27m
Multiple Airlines
Thu 9/109:45 am
ICN
- ONT
2 stops26h 32m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$1,022
This Kiwi.com deal was found by Cheapflights users on 6/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/13:13 pm
ONT
- ICN
1 stop38h 27m
Multiple Airlines
Thu 9/1012:30 am
ICN
- ONT
1 stop32h 35m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$1,024
This American Airlines deal was found by Cheapflights users on 6/24. 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.
Sun 11/111:59 pm
ONT
- ICN
1 stop23h 26m
American Airlines
Tue 11/176:35 pm
ICN
- ONT
1 stop20h 48m
American Airlines
Deal found 6/24![American Airlines logo]()
$1,048
This SmartFares deal was found by Cheapflights users on 6/25. 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 8/36:02 am
ONT
- ICN
1 stop19h 28m
Alaska Airlines
Mon 8/177:35 pm
ICN
- ONT
1 stop16h 55m
Alaska Airlines
Deal found 6/25![Alaska Airlines logo]()
$1,052
This SmartFares deal was found by Cheapflights users on 6/24. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/136:02 am
ONT
- ICN
1 stop19h 28m
Alaska Airlines
Thu 8/277:35 pm
ICN
- ONT
1 stop15h 28m
Alaska Airlines
Deal found 6/24![Alaska Airlines logo]()
$1,053
This American Airlines deal was found by Cheapflights users on 6/25. 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 9/201:05 pm
ONT
- ICN
2 stops34h 40m
American Airlines
Thu 10/15:50 pm
ICN
- ONT
2 stops20h 53m
American Airlines
Deal found 6/25![American Airlines logo]()
$1,060
This Japan Airlines deal was found by Cheapflights users on 6/25. 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.
Wed 8/52:27 pm
ONT
- GMP
2 stops52h 13m
Multiple Airlines
Thu 8/2712:05 pm
GMP
- ONT
2 stops41h 26m
Multiple Airlines
Deal found 6/25![Multiple Airlines logo]()
$1,439
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 June 26, 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 June 26, 2026.
This oojo deal was found by Cheapflights users on 6/25. 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 10/1212:10 am
ONT
- ICN
1 stop27h 25m
China Airlines
Tue 10/2712:30 pm
ICN
- ONT
1 stop21h 20m
China Airlines
Deal found 6/25![China Airlines logo]()
$1,104
This Alaska Airlines deal was found by Cheapflights users on 6/23. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/236:02 am
ONT
- ICN
1 stop19h 28m
Alaska Airlines
Mon 10/197:35 pm
ICN
- ONT
1 stop14h 28m
Alaska Airlines
Deal found 6/23![Alaska Airlines logo]()
$1,106
This United Airlines deal was found by Cheapflights users on 6/23. 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 11/141:52 pm
ONT
- ICN
1 stop22h 48m
United Airlines
Tue 12/112:45 pm
ICN
- ONT
1 stop16h 35m
United Airlines
Deal found 6/23![United Airlines logo]()
$1,166
This Japan Airlines deal was found by Cheapflights users on 6/25. 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.
Wed 8/52:27 pm
ONT
- GMP
2 stops52h 13m
Multiple Airlines
Thu 8/2712:05 pm
GMP
- ONT
2 stops41h 26m
Multiple Airlines
Deal found 6/25![Multiple Airlines logo]()
$1,439
This oojo deal was found by Cheapflights users on 6/25. 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.
Tue 10/1312:10 am
ONT
- ICN
1 stop19h 05m
China Airlines
Wed 10/2812:30 pm
ICN
- ONT
1 stop21h 20m
China Airlines
Deal found 6/25![China Airlines logo]()
$1,104
This United Airlines deal was found by Cheapflights users on 6/22. 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 10/148:03 am
ONT
- ICN
1 stop14h 57m
United Airlines
Mon 11/26:00 pm
ICN
- ONT
2 stops35h 42m
United Airlines
Deal found 6/22![United Airlines logo]()
$1,180
This China Airlines deal was found by Cheapflights users on 6/25. 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.
Tue 9/2912:10 am
ONT
- ICN
1 stop27h 25m
China Airlines
Thu 10/298:15 pm
ICN
- ONT
1 stop37h 35m
China Airlines
Deal found 6/25![China Airlines logo]()
$1,151
This China Airlines deal was found by Cheapflights users on 6/23. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2812:10 am
ONT
- ICN
1 stop19h 05m
China Airlines
Tue 10/2012:35 pm
ICN
- ONT
1 stop21h 25m
China Airlines
Deal found 6/23![China Airlines logo]()
$1,155
This Mytrip deal was found by Cheapflights users on 6/21. 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 9/212:45 am
ONT
- GMP
2 stops25h 15m
Multiple Airlines
Mon 9/711:25 am
GMP
- ONT
2 stops21h 40m
Multiple Airlines
Deal found 6/21![Multiple Airlines logo]()
$1,449
This China Airlines deal was found by Cheapflights users on 6/21. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1412:10 am
ONT
- ICN
1 stop19h 05m
China Airlines
Thu 10/2912:30 pm
ICN
- ONT
1 stop21h 20m
China Airlines
Deal found 6/21![China Airlines logo]()
$1,155
This Mytrip deal was found by Cheapflights users on 6/22. 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.
Mon 8/1012:45 am
ONT
- GMP
2 stops25h 15m
Multiple Airlines
Fri 8/2111:25 am
GMP
- ONT
2 stops22h 15m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$1,455
This China Airlines deal was found by Cheapflights users on 6/24. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/412:45 am
ONT
- ICN
1 stop26h 20m
China Airlines
Tue 9/2212:35 pm
ICN
- ONT
1 stop21h 25m
China Airlines
Deal found 6/24![China Airlines logo]()
$1,155
This China Airlines deal was found by Cheapflights users on 6/22. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1512:10 am
ONT
- ICN
1 stop19h 05m
China Airlines
Sun 10/412:35 pm
ICN
- ONT
1 stop21h 25m
China Airlines
Deal found 6/22![China Airlines logo]()
$1,155
This Mytrip deal was found by Cheapflights users on 6/23. 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 10/1012:10 am
ONT
- GMP
1 stop20h 45m
Multiple Airlines
Sat 10/3111:25 am
GMP
- ONT
1 stop21h 30m
Multiple Airlines
Deal found 6/23![Multiple Airlines logo]()
$1,660
This China Airlines deal was found by Cheapflights users on 6/22. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/2910:50 pm
ONT
- ICN
1 stop19h 30m
China Airlines
Thu 12/1012:30 pm
ICN
- ONT
1 stop21h 20m
China Airlines
Deal found 6/22![China Airlines logo]()
$1,155
This Mytrip deal was found by Cheapflights users on 6/24. 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.
Wed 10/2112:10 am
ONT
- GMP
2 stops30h 15m
Multiple Airlines
Thu 10/298:30 am
GMP
- ONT
2 stops25h 20m
Multiple Airlines
Deal found 6/24![Multiple Airlines logo]()
$1,710
This China Airlines deal was found by Cheapflights users on 6/24. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/412:45 am
ONT
- ICN
1 stop18h 45m
China Airlines
Wed 9/2312:35 pm
ICN
- ONT
1 stop21h 25m
China Airlines
Deal found 6/24![China Airlines logo]()
$1,198
This Mytrip deal was found by Cheapflights users on 6/23. 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.
Sun 7/1912:45 am
ONT
- GMP
2 stops29h 40m
Multiple Airlines
Fri 7/318:10 am
GMP
- ONT
2 stops26h 30m
Multiple Airlines
Deal found 6/23![Multiple Airlines logo]()
$1,841
This Mytrip deal was found by Cheapflights users on 6/24. 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.
Sun 7/1912:45 am
ONT
- GMP
2 stops25h 30m
Multiple Airlines
Fri 7/248:10 am
GMP
- ONT
2 stops26h 30m
Multiple Airlines
Deal found 6/24![Multiple Airlines logo]()
$1,881
This Japan Airlines deal was found by Cheapflights users on 6/24. 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 Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/92:22 pm
ONT
- GMP
2 stops38h 53m
Multiple Airlines
Mon 10/57:15 pm
GMP
- ONT
2 stops32h 33m
Multiple Airlines
Deal found 6/24![Multiple Airlines logo]()
$1,998
This Mytrip deal was found by Cheapflights users on 6/24. 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.
Mon 7/1312:45 am
ONT
- GMP
2 stops29h 40m
Multiple Airlines
Tue 7/218:10 am
GMP
- ONT
2 stops26h 30m
Multiple Airlines
Deal found 6/24![Multiple Airlines logo]()
$2,121
Last-minute flights from Ontario to SeoulDiscover last-minute flight deals from Ontario to Seoul. Data last updated June 26, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Seoul. Data last updated June 26, 2026 and is based on user searches.
This Booking.com deal was found by Cheapflights users on 6/25. 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.
Fri 7/105:26 pm
ONT
- ICN
1 stop32h 04m
Alaska Airlines
Wed 7/227:35 pm
ICN
- ONT
1 stop19h 36m
Alaska Airlines
Deal found 6/25![Alaska Airlines logo]()
$1,111
This Booking.com deal was found by Cheapflights users on 6/24. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/109:20 pm
ONT
- ICN
1 stop28h 10m
Alaska Airlines
Fri 7/247:35 pm
ICN
- ONT
1 stop16h 57m
Alaska Airlines
Deal found 6/24![Alaska Airlines logo]()
$1,112
This Alaska Airlines deal was found by Cheapflights users on 6/24. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/102:05 pm
ONT
- ICN
1 stop35h 25m
Alaska Airlines
Sun 7/197:35 pm
ICN
- ONT
1 stop31h 39m
Alaska Airlines
Deal found 6/24![Alaska Airlines logo]()
$1,134
This Gotogate deal was found by Cheapflights users on 6/22. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/126:02 am
ONT
- ICN
1 stop19h 28m
Alaska Airlines
Mon 7/137:35 pm
ICN
- ONT
1 stop19h 36m
Alaska Airlines
Deal found 6/22![Alaska Airlines logo]()
$1,110
This Booking.com deal was found by Cheapflights users on 6/25. 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.
Mon 7/136:02 am
ONT
- ICN
1 stop19h 28m
Alaska Airlines
Mon 7/277:35 pm
ICN
- ONT
1 stop33h 34m
Alaska Airlines
Deal found 6/25![Alaska Airlines logo]()
$1,114
This Booking.com deal was found by Cheapflights users on 6/25. 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.
Wed 7/156:02 am
ONT
- ICN
1 stop19h 28m
Alaska Airlines
Mon 7/277:35 pm
ICN
- ONT
1 stop31h 39m
Alaska Airlines
Deal found 6/25![Alaska Airlines logo]()
$1,115
This Alaska Airlines deal was found by Cheapflights users on 6/25. 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 7/156:02 am
ONT
- ICN
1 stop19h 28m
Alaska Airlines
Wed 8/127:35 pm
ICN
- ONT
1 stop19h 36m
Alaska Airlines
Deal found 6/25![Alaska Airlines logo]()
$1,120
This Alaska Airlines deal was found by Cheapflights users on 6/24. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/169:20 pm
ONT
- ICN
1 stop28h 10m
Alaska Airlines
Wed 7/297:35 pm
ICN
- ONT
1 stop19h 36m
Alaska Airlines
Deal found 6/24![Alaska Airlines logo]()
$1,127
This Alaska Airlines deal was found by Cheapflights users on 6/23. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/199:20 pm
ONT
- ICN
1 stop28h 10m
Alaska Airlines
Wed 8/197:35 pm
ICN
- ONT
1 stop15h 28m
Alaska Airlines
Deal found 6/23![Alaska Airlines logo]()
$1,113
This Booking.com deal was found by Cheapflights users on 6/24. 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 Booking.com 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
Thu 11/198:00 pm
ICN
- ONT
1 stop19h 54m
Alaska Airlines
Deal found 6/24![Alaska Airlines logo]()
$1,097
This Booking.com deal was found by Cheapflights users on 6/24. 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 Booking.com 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
Mon 7/277:35 pm
ICN
- ONT
1 stop31h 39m
Alaska Airlines
Deal found 6/24![Alaska Airlines logo]()
$1,098
This Alaska Airlines deal was found by Cheapflights users on 6/24. 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 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
Sat 8/17:35 pm
ICN
- ONT
1 stop16h 55m
Alaska Airlines
Deal found 6/24![Alaska Airlines logo]()
$1,106
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 June 26, 2026.
Search for one-way flight options from Ontario to Seoul. Find affordable one-way fares based on user searches. Data last updated June 26, 2026.
This Trip.com deal was found by Cheapflights users on 6/23. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/298:58 am
ONT
- ICN
1 stop20h 42m
Multiple Airlines
Deal found 6/23![Multiple Airlines logo]()
$379
This Trip.com deal was found by Cheapflights users on 6/25. 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.
Wed 7/158:58 am
ONT
- ICN
1 stop20h 42m
Multiple Airlines
Deal found 6/25![Multiple Airlines logo]()
$381
This Trip.com deal was found by Cheapflights users on 6/24. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/318:48 am
ONT
- ICN
1 stop20h 52m
Multiple Airlines
Deal found 6/24![Multiple Airlines logo]()
$399
This Trip.com deal was found by Cheapflights users on 6/20. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/228:58 am
ONT
- ICN
1 stop20h 42m
Multiple Airlines
Deal found 6/20![Multiple Airlines logo]()
$419
This Trip.com deal was found by Cheapflights users on 6/24. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/288:48 am
ONT
- ICN
1 stop20h 52m
Multiple Airlines
Deal found 6/24![Multiple Airlines logo]()
$463
This Trip.com deal was found by Cheapflights users on 6/23. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/198:58 am
ONT
- ICN
1 stop20h 42m
Multiple Airlines
Deal found 6/23![Multiple Airlines logo]()
$465
This Trip.com deal was found by Cheapflights users on 6/24. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1111:38 am
ONT
- ICN
1 stop18h 02m
Multiple Airlines
Deal found 6/24![Multiple Airlines logo]()
$469
This Trip.com deal was found by Cheapflights users on 6/22. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/208:58 am
ONT
- ICN
1 stop20h 42m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$482
This Trip.com deal was found by Cheapflights users on 6/24. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/168:58 am
ONT
- ICN
1 stop20h 42m
Multiple Airlines
Deal found 6/24![Multiple Airlines logo]()
$484
This Trip.com deal was found by Cheapflights users on 6/25. 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.
Sun 8/28:58 am
ONT
- ICN
1 stop20h 42m
Multiple Airlines
Deal found 6/25![Multiple Airlines logo]()
$491
This Mytrip deal was found by Cheapflights users on 6/22. 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.
Sat 8/2912:45 am
ONT
- GMP
1 stop24h 40m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$634
This Mytrip deal was found by Cheapflights users on 6/24. 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.
Thu 9/1012:45 am
ONT
- GMP
1 stop24h 40m
Multiple Airlines
Deal found 6/24![Multiple Airlines logo]()
$648
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 June 26, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $956 (Kiwi.com) |
One-way from | $379 (Trip.com) |
Popular in | June |
Cheapest in | September |
Average price | $1,302 |
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 June 26, 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
Mon 10/12
12:10 am-7:35 pm
1 stop27h 25m
Incheon Intl
Tue 10/27
12:30 pm-5:50 pm
1 stop21h 20m
$1,104
OntarioIncheon
ONT - ICN
ONTICN
Ontario
Tue 10/13
12:10 am-11:15 am
1 stop19h 05m
Incheon Intl
Wed 10/28
12:30 pm-5:50 pm
1 stop21h 20m
$1,104
Quickest round-trip
OntarioIncheon
ONT - ICN
ONTICN
Ontario
Wed 9/23
6:02 am-5:30 pm
1 stop19h 28m
Incheon Intl
Mon 10/19
7:35 pm-6:03 pm
1 stop14h 28m
$1,106
OntarioIncheon
ONT - ICN
ONTICN
Ontario
Tue 9/29
12:10 am-7:35 pm
1 stop27h 25m
Incheon Intl
Thu 10/29
8:15 pm-5:50 pm
1 stop37h 35m
$1,151
OntarioIncheon
ONT - ICN
ONTICN
Ontario
Mon 9/28
12:10 am-11:15 am
1 stop19h 05m
Incheon Intl
Tue 10/20
12:35 pm-6:00 pm
1 stop21h 25m
$1,155
OntarioIncheon
ONT - ICN
ONTICN
Ontario
Wed 10/14
12:10 am-11:15 am
1 stop19h 05m
Incheon Intl
Thu 10/29
12:30 pm-5:50 pm
1 stop21h 20m
$1,155
OntarioIncheon
ONT - ICN
ONTICN
Ontario
Fri 9/4
12:45 am-7:05 pm
1 stop26h 20m
Incheon Intl
Tue 9/22
12:35 pm-6:00 pm
1 stop21h 25m
$1,155
OntarioIncheon
ONT - ICN
ONTICN
Ontario
Tue 9/15
12:10 am-11:15 am
1 stop19h 05m
Incheon Intl
Sun 10/4
12:35 pm-6:00 pm
1 stop21h 25m
$1,155
OntarioIncheon
ONT - ICN
ONTICN
Ontario
Sun 11/29
10:50 pm-11:20 am
1 stop19h 30m
Incheon Intl
Thu 12/10
12:30 pm-4:50 pm
1 stop21h 20m
$1,155
OntarioIncheon
ONT - ICN
ONTICN
Ontario
Sat 11/14
1:52 pm-5:40 am
1 stop22h 48m
Incheon Intl
Tue 12/1
12:45 pm-12:20 pm
1 stop16h 35m
$1,166
Showing 1-10 of 42 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 June.
| 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 June 26, 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.
Comfort
8.0
Crew
8.5
Boarding
8.3
Food
7.8
Overall
8.3
Entertainment
8.0
Reviews
1 / 20
10.0
ExcellentA,Feb 2026
SEA - TPE
Comfort
8.0
Crew
8.5
Boarding
8.3
Food
7.8
Overall
8.3
Entertainment
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.
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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 June 26, 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 June 26, 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 June 26, 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 June 26, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$860 | Average$989 | FlexibilityNo cancel fee | On-time70% |