$424+ 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 8/12. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SEL
Jul 3 — Jul 101
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
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
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 Seoul
Cheapest
Best
Last-minute
One-way
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 3, 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 3, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” 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 8/198:33 pm
ONT
- ICN
2 stops30h 12m
Multiple Airlines
Mon 9/77:15 pm
ICN
- ONT
1 stop33h 27m
Multiple Airlines
Deal found 6/2![Multiple Airlines logo]()
$983
This Trip.com deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” 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 9/2111:38 am
ONT
- ICN
1 stop18h 02m
Multiple Airlines
Wed 9/307:15 pm
ICN
- ONT
2 stops31h 28m
Multiple Airlines
Deal found 6/2![Multiple Airlines logo]()
$1,021
This Kiwi.com deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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 8/181:27 pm
ONT
- ICN
2 stops37h 18m
Multiple Airlines
Wed 8/267:15 pm
ICN
- ONT
1 stop31h 43m
Multiple Airlines
Deal found 5/31![Multiple Airlines logo]()
$1,051
This Kiwi.com deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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
2 stops30h 12m
Multiple Airlines
Wed 8/267:15 pm
ICN
- ONT
1 stop31h 43m
Multiple Airlines
Deal found 5/31![Multiple Airlines logo]()
$1,063
This Kiwi.com deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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 8/193:34 pm
ONT
- ICN
2 stops35h 11m
Multiple Airlines
Mon 8/247:15 pm
ICN
- ONT
1 stop33h 27m
Multiple Airlines
Deal found 5/31![Multiple Airlines logo]()
$1,073
This Kiwi.com deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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
2 stops30h 12m
Multiple Airlines
Mon 8/247:15 pm
ICN
- ONT
1 stop33h 27m
Multiple Airlines
Deal found 5/31![Multiple Airlines logo]()
$1,085
This Kiwi.com deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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
2 stops30h 12m
Multiple Airlines
Sun 8/237:15 pm
ICN
- ONT
1 stop31h 43m
Multiple Airlines
Deal found 5/31![Multiple Airlines logo]()
$1,086
This Kiwi.com deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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
2 stops30h 12m
Multiple Airlines
Fri 8/217:15 pm
ICN
- ONT
1 stop31h 43m
Multiple Airlines
Deal found 5/31![Multiple Airlines logo]()
$1,087
This Kiwi.com deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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 8/196:00 am
ONT
- ICN
2 stops20h 45m
Multiple Airlines
Fri 8/217:15 pm
ICN
- ONT
1 stop31h 43m
Multiple Airlines
Deal found 5/31![Multiple Airlines logo]()
$1,088
This Kiwi.com deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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 8/181:27 pm
ONT
- ICN
2 stops37h 18m
Multiple Airlines
Mon 8/249:05 am
ICN
- ONT
1 stop24h 35m
Multiple Airlines
Deal found 5/31![Multiple Airlines logo]()
$1,089
This SmartFares deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” 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 8/212:45 am
ONT
- ICN
1 stop18h 45m
China Airlines
Fri 9/412:45 pm
ICN
- ONT
1 stop21h 55m
China Airlines
Deal found 6/2![China Airlines logo]()
$1,095
This Booking.com deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” 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 8/193:07 pm
ONT
- ICN
1 stop34h 23m
Alaska Airlines
Mon 9/77:35 pm
ICN
- ONT
1 stop31h 41m
Alaska Airlines
Deal found 6/3![Alaska Airlines logo]()
$1,099
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 3, 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 3, 2026.
This China Airlines deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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 10/412:10 am
ONT
- ICN
1 stop19h 05m
China Airlines
Wed 10/148:35 pm
ICN
- ONT
1 stop37h 25m
China Airlines
Deal found 5/31![China Airlines logo]()
$1,239
This United Airlines deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” 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 9/46:00 am
ONT
- ICN
1 stop17h 00m
United Airlines
Mon 9/2811:30 am
ICN
- ONT
1 stop16h 42m
United Airlines
Deal found 6/3![United Airlines logo]()
$1,256
This Qatar Airways deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” 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.
Thu 10/112:12 pm
ONT
- ICN
2 stops36h 53m
Qatar Airways
Fri 10/91:20 am
ICN
- ONT
2 stops38h 22m
Qatar Airways
Deal found 6/2![Qatar Airways logo]()
$1,261
This Alaska Airlines deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” 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 7/266:02 am
ONT
- ICN
1 stop19h 28m
Alaska Airlines
Wed 9/167:35 pm
ICN
- ONT
1 stop15h 28m
Alaska Airlines
Deal found 5/29![Alaska Airlines logo]()
$1,393
This Mytrip deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” 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 stops23h 30m
Multiple Airlines
Mon 7/2011:25 am
GMP
- ONT
2 stops22h 15m
Multiple Airlines
Deal found 6/1![Multiple Airlines logo]()
$1,972
This Ovago deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/76:02 am
ONT
- GMP
2 stops36h 38m
Japan Airlines
Tue 7/218:00 am
GMP
- ONT
2 stops24h 30m
Japan Airlines
Deal found 5/31![Japan Airlines logo]()
$2,106
This China Airlines deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” 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 9/2512:10 am
ONT
- ICN
1 stop19h 55m
China Airlines
Thu 10/1512:35 pm
ICN
- ONT
1 stop21h 25m
China Airlines
Deal found 6/3![China Airlines logo]()
$1,273
This United Airlines deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” 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 7/286:00 am
ONT
- ICN
1 stop17h 00m
United Airlines
Mon 9/1411:30 am
ICN
- ONT
1 stop16h 42m
United Airlines
Deal found 5/29![United Airlines logo]()
$1,306
This Qatar Airways deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” 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 9/812:12 pm
ONT
- ICN
2 stops36h 53m
Qatar Airways
Mon 9/281:20 am
ICN
- ONT
2 stops33h 43m
Qatar Airways
Deal found 6/1![Qatar Airways logo]()
$1,400
This China Airlines deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” 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 9/2412:10 am
ONT
- ICN
1 stop19h 05m
China Airlines
Tue 10/138:35 pm
ICN
- ONT
1 stop37h 25m
China Airlines
Deal found 6/3![China Airlines logo]()
$1,357
This Qatar Airways deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” 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 9/112:00 pm
ONT
- ICN
2 stops37h 05m
Qatar Airways
Tue 9/291:20 am
ICN
- ONT
2 stops33h 43m
Qatar Airways
Deal found 6/1![Qatar Airways logo]()
$1,400
This Alaska Airlines deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” 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 11/126:00 am
ONT
- ICN
1 stop18h 35m
Alaska Airlines
Thu 11/198:00 pm
ICN
- ONT
2 stops20h 49m
Alaska Airlines
Deal found 5/30![Alaska Airlines logo]()
$1,593
This China Airlines deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” 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 9/1612:10 am
ONT
- ICN
1 stop27h 25m
China Airlines
Fri 10/28:35 pm
ICN
- ONT
1 stop37h 25m
China Airlines
Deal found 5/30![China Airlines logo]()
$1,396
This Qatar Airways deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” 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.
Sun 11/112:00 pm
ONT
- ICN
2 stops36h 15m
Qatar Airways
Wed 11/1112:20 am
ICN
- ONT
2 stops35h 08m
Qatar Airways
Deal found 6/2![Qatar Airways logo]()
$1,517
This Mytrip deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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 6/2912:10 am
ONT
- GMP
2 stops24h 05m
Multiple Airlines
Tue 7/78:10 am
GMP
- ONT
2 stops26h 30m
Multiple Airlines
Deal found 5/31![Multiple Airlines logo]()
$1,989
This Booking.com deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” 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 6/297:00 am
ONT
- GMP
3 stops23h 25m
Multiple Airlines
Sun 7/123:45 pm
GMP
- ONT
3 stops37h 24m
Multiple Airlines
Deal found 6/2![Multiple Airlines logo]()
$2,082
This Japan Airlines deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” 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 6/255:45 am
ONT
- GMP
2 stops23h 30m
Multiple Airlines
Wed 7/158:00 am
GMP
- ONT
2 stops24h 57m
Multiple Airlines
Deal found 6/3![Multiple Airlines logo]()
$2,112
This Mytrip deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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 7/312:45 am
ONT
- GMP
2 stops25h 15m
Multiple Airlines
Fri 7/1011:25 am
GMP
- ONT
2 stops22h 15m
Multiple Airlines
Deal found 5/31![Multiple Airlines logo]()
$2,328
This American Airlines deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” 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 7/145:34 am
ONT
- GMP
2 stops23h 41m
Multiple Airlines
Sun 7/198:00 am
GMP
- ONT
2 stops27h 59m
Multiple Airlines
Deal found 6/3![Multiple Airlines logo]()
$2,426
This American Airlines deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/811:59 pm
ONT
- GMP
2 stops25h 56m
Multiple Airlines
Sun 7/198:00 am
GMP
- ONT
2 stops27h 59m
Multiple Airlines
Deal found 5/31![Multiple Airlines logo]()
$2,483
This American Airlines deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” 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.
Fri 7/1011:59 pm
ONT
- GMP
2 stops25h 56m
Multiple Airlines
Sun 7/198:00 am
GMP
- ONT
2 stops27h 59m
Multiple Airlines
Deal found 6/1![Multiple Airlines logo]()
$2,495
This American Airlines deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” 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 7/45:34 am
ONT
- GMP
2 stops23h 41m
Multiple Airlines
Sun 7/198:00 am
GMP
- ONT
2 stops27h 59m
Multiple Airlines
Deal found 5/30![Multiple Airlines logo]()
$2,553
This Japan Airlines deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” 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 7/211:59 pm
ONT
- GMP
2 stops29h 16m
Multiple Airlines
Sun 7/57:15 pm
GMP
- ONT
2 stops32h 30m
Multiple Airlines
Deal found 6/2![Multiple Airlines logo]()
$3,501
This Japan Airlines deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” 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 10/206:00 am
ONT
- GMP
2 stops36h 40m
Multiple Airlines
Sat 11/148:00 am
GMP
- ONT
2 stops27h 22m
Multiple Airlines
Deal found 6/1![Multiple Airlines logo]()
$3,794
Last-minute flights from Ontario to SeoulDiscover last-minute flight deals from Ontario to Seoul. Data last updated June 3, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Seoul. Data last updated June 3, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” 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 6/1712:10 am
ONT
- GMP
2 stops26h 05m
Multiple Airlines
Sun 6/288:10 am
GMP
- ONT
2 stops25h 50m
Multiple Airlines
Deal found 6/1![Multiple Airlines logo]()
$1,882
This Mytrip deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” 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 6/2512:10 am
ONT
- ICN
1 stop28h 15m
Multiple Airlines
Mon 6/298:35 am
ICN
- ONT
1 stop25h 25m
Multiple Airlines
Deal found 5/29![Multiple Airlines logo]()
$1,203
This Alaska Airlines deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” 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 7/15:54 pm
ONT
- ICN
1 stop31h 36m
Alaska Airlines
Sat 7/47:35 pm
ICN
- ONT
1 stop17h 01m
Alaska Airlines
Deal found 5/30![Alaska Airlines logo]()
$1,278
This KAYAK deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/74:20 pm
ONT
- ICN
1 stop20h 00m
Asiana Airlines
Tue 8/1111:30 am
ICN
- ONT
1 stop22h 41m
Asiana Airlines
Deal found 6/2![Asiana Airlines logo]()
$1,258
This Alaska Airlines deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” 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 7/812:04 pm
ONT
- ICN
1 stop37h 26m
Alaska Airlines
Sun 7/197:35 pm
ICN
- ONT
1 stop19h 36m
Alaska Airlines
Deal found 6/2![Alaska Airlines logo]()
$1,127
This Kiwi.com deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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 7/88:58 am
ONT
- ICN
1 stop20h 42m
Multiple Airlines
Sun 7/196:35 am
ICN
- ONT
2 stops51h 05m
Multiple Airlines
Deal found 5/31![Multiple Airlines logo]()
$1,224
This United Airlines deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” 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 7/216:00 am
ONT
- ICN
1 stop17h 00m
United Airlines
Tue 8/1811:30 am
ICN
- ONT
1 stop16h 42m
United Airlines
Deal found 6/2![United Airlines logo]()
$1,206
This Delta deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/216:20 am
ONT
- ICN
1 stop18h 20m
Delta
Tue 7/284:40 pm
ICN
- ONT
1 stop16h 41m
Delta
Deal found 6/2![Delta logo]()
$1,256
This Ovago deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/236:00 am
ONT
- ICN
1 stop17h 00m
Asiana Airlines
Wed 8/511:30 am
ICN
- ONT
1 stop16h 42m
Asiana Airlines
Deal found 6/2![Asiana Airlines logo]()
$1,194
This WestJet deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/286:20 am
ONT
- ICN
2 stops44h 25m
WestJet
Mon 9/148:45 pm
ICN
- ONT
2 stops41h 55m
WestJet
Deal found 5/29![WestJet logo]()
$1,264
This KAYAK deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/306:00 am
ONT
- ICN
1 stop17h 00m
Asiana Airlines
Tue 8/1111:30 am
ICN
- ONT
1 stop16h 42m
Asiana Airlines
Deal found 6/2![Asiana Airlines logo]()
$1,193
This United Airlines deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” 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 7/305:00 am
ONT
- ICN
2 stops31h 20m
United Airlines
Tue 8/1111:30 am
ICN
- ONT
1 stop16h 42m
United Airlines
Deal found 6/2![United Airlines logo]()
$1,211
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 3, 2026.
Search for one-way flight options from Ontario to Seoul. Find affordable one-way fares based on user searches. Data last updated June 3, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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 8/128:58 am
ONT
- ICN
2 stops41h 47m
Multiple Airlines
Deal found 5/31![Multiple Airlines logo]()
$424
This Trip.com deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” 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 8/196:00 am
ONT
- ICN
2 stops20h 45m
Multiple Airlines
Deal found 5/29![Multiple Airlines logo]()
$433
This Kiwi.com deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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 8/138:58 am
ONT
- ICN
2 stops41h 47m
Multiple Airlines
Deal found 5/31![Multiple Airlines logo]()
$443
This Trip.com deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” 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 7/88:58 am
ONT
- ICN
1 stop20h 42m
Multiple Airlines
Deal found 5/30![Multiple Airlines logo]()
$458
This Trip.com deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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 7/138:58 am
ONT
- ICN
1 stop20h 42m
Multiple Airlines
Deal found 5/31![Multiple Airlines logo]()
$506
This SmartFares deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” 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 7/236:02 am
ONT
- ICN
1 stop19h 28m
Alaska Airlines
Deal found 5/30![Alaska Airlines logo]()
$509
This Trip.com deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” 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 6/2![Multiple Airlines logo]()
$515
This Kiwi.com deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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.
Sat 7/258:58 am
ONT
- ICN
3 stops58h 27m
Multiple Airlines
Deal found 5/31![Multiple Airlines logo]()
$535
This Kiwi.com deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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 8/138:58 am
ONT
- GMP
3 stops41h 17m
Multiple Airlines
Deal found 5/31![Multiple Airlines logo]()
$667
This Kiwi.com deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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 8/128:58 am
ONT
- GMP
3 stops41h 17m
Multiple Airlines
Deal found 5/31![Multiple Airlines logo]()
$672
This Kiwi.com deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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.
Sat 7/259:11 am
ONT
- GMP
3 stops59h 44m
Multiple Airlines
Deal found 5/31![Multiple Airlines logo]()
$692
This Mytrip deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” 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 9/2012:10 am
ONT
- GMP
1 stop25h 15m
Multiple Airlines
Deal found 6/3![Multiple Airlines logo]()
$703
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 3, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $983 (Kiwi.com) |
One-way from | $424 (Kiwi.com) |
Popular in | December |
Cheapest in | September |
Average price | $1,202 |
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 3, 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
Sun 10/4
12:10 am-11:15 am
1 stop19h 05m
Incheon Intl
Wed 10/14
8:35 pm-6:00 pm
1 stop37h 25m
$1,239
Quickest round-trip
OntarioIncheon
ONT - ICN
ONTICN
Ontario
Fri 9/4
6:00 am-3:00 pm
1 stop17h 00m
Incheon Intl
Mon 9/28
11:30 am-12:12 pm
1 stop16h 42m
$1,256
OntarioIncheon
ONT - ICN
ONTICN
Ontario
Thu 10/1
12:12 pm-5:05 pm
2 stops36h 53m
Incheon Intl
Fri 10/9
1:20 am-11:42 pm
2 stops38h 22m
$1,261
OntarioIncheon
ONT - ICN
ONTICN
Ontario
Fri 9/25
12:10 am-12:05 pm
1 stop19h 55m
Incheon Intl
Thu 10/15
12:35 pm-6:00 pm
1 stop21h 25m
$1,273
OntarioIncheon
ONT - ICN
ONTICN
Ontario
Tue 7/28
6:00 am-3:00 pm
1 stop17h 00m
Incheon Intl
Mon 9/14
11:30 am-12:12 pm
1 stop16h 42m
$1,306
OntarioIncheon
ONT - ICN
ONTICN
Ontario
Thu 9/24
12:10 am-11:15 am
1 stop19h 05m
Incheon Intl
Tue 10/13
8:35 pm-6:00 pm
1 stop37h 25m
$1,357
OntarioIncheon
ONT - ICN
ONTICN
Ontario
Sun 7/26
6:02 am-5:30 pm
1 stop19h 28m
Incheon Intl
Wed 9/16
7:35 pm-7:03 pm
1 stop15h 28m
$1,393
OntarioIncheon
ONT - ICN
ONTICN
Ontario
Wed 9/16
12:10 am-7:35 pm
1 stop27h 25m
Incheon Intl
Fri 10/2
8:35 pm-6:00 pm
1 stop37h 25m
$1,396
OntarioIncheon
ONT - ICN
ONTICN
Ontario
Tue 9/8
12:12 pm-5:05 pm
2 stops36h 53m
Incheon Intl
Mon 9/28
1:20 am-7:03 pm
2 stops33h 43m
$1,400
OntarioIncheon
ONT - ICN
ONTICN
Ontario
Tue 9/1
12:00 pm-5:05 pm
2 stops37h 05m
Incheon Intl
Tue 9/29
1:20 am-7:03 pm
2 stops33h 43m
$1,400
Showing 1-10 of 45 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 3, 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
Comfort
8.0
Overall
8.3
Entertainment
8.0
Crew
8.5
Food
7.8
Reviews
1 / 20
10.0
ExcellentA,Feb 2026
SEA - TPE
Boarding
8.3
Comfort
8.0
Overall
8.3
Entertainment
8.0
Crew
8.5
Food
7.8
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.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Other flights from Ontario
Popular flights
Seoul flight routes
Alternative routes for Ontario to Seoul
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Seoul by adding a car rental and/or hotel reservation to your travel itinerary.
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 3, 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 3, 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 3, 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 3, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$860 | Average$989 | FlexibilityNo cancel fee | On-time70% |