$349+ Cheap flights from Ontario (ONT) to Seoul (SEL)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/14. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SEL
Oct 31 — Nov 71
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 October 1, 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 October 1, 2026.
This Mytrip deal was found by Cheapflights users on 9/29. 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.
Sat 11/145:07 pm -
2 stops35h 13m
Sun 11/227:45 pm -
2 stops28h 22m
Deal found 9/29![Multiple Airlines logo]()
$788
This Mytrip deal was found by Cheapflights users on 9/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/1512:01 pm -
1 stop16h 19m
Sun 11/227:45 pm -
2 stops28h 22m
Deal found 9/30![Multiple Airlines logo]()
$793
This Mytrip deal was found by Cheapflights users on 9/29. 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.
Wed 10/2810:35 am -
2 stops18h 45m
Wed 11/117:45 pm -
2 stops32h 31m
Deal found 9/29![Multiple Airlines logo]()
$823
This Mytrip deal was found by Cheapflights users on 9/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/308:35 pm -
2 stops32h 45m
Sat 11/77:45 pm -
2 stops32h 31m
Deal found 9/30![Multiple Airlines logo]()
$831
This Mytrip deal was found by Cheapflights users on 9/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/1512:01 pm -
1 stop16h 19m
Sat 11/217:45 pm -
1 stop21h 44m
Deal found 9/26![Multiple Airlines logo]()
$846
This Mytrip deal was found by Cheapflights users on 9/29. 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.
Sun 11/812:01 pm -
1 stop16h 19m
Sat 11/217:45 pm -
1 stop21h 44m
Deal found 9/29![Multiple Airlines logo]()
$848
This Kiwi.com deal was found by Cheapflights users on 9/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1411:52 am -
2 stops40h 28m
Sat 11/217:45 pm -
1 stop21h 44m
Deal found 9/30![Multiple Airlines logo]()
$850
This Mytrip deal was found by Cheapflights users on 9/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/298:35 pm -
2 stops32h 45m
Sat 11/77:45 pm -
2 stops32h 31m
Deal found 9/30![Multiple Airlines logo]()
$851
This Mytrip deal was found by Cheapflights users on 9/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/3110:00 am -
2 stops19h 20m
Sat 11/77:45 pm -
2 stops32h 31m
Deal found 9/30![Multiple Airlines logo]()
$862
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 October 1, 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 October 1, 2026.
This Delta deal was found by Cheapflights users on 9/28. Clicking the “Pick Dates” 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.
Thu 11/127:00 am -
1 stop15h 55m
Thu 11/194:10 pm -
2 stops24h 39m
Deal found 9/28![Delta logo]()
$1,022
This United Airlines deal was found by Cheapflights users on 9/26. Clicking the “Pick Dates” 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 11/46:00 am -
1 stop17h 15m
Tue 11/1712:45 pm -
1 stop16h 44m
Deal found 9/26![United Airlines logo]()
$1,118
This Delta deal was found by Cheapflights users on 9/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/147:00 am -
1 stop15h 55m
Sun 11/224:10 pm -
1 stop23h 50m
Deal found 9/30![Delta logo]()
$1,118
This United Airlines deal was found by Cheapflights users on 9/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/86:07 am -
1 stop16h 53m
Thu 10/2911:45 am -
1 stop16h 44m
Deal found 9/26![United Airlines logo]()
$1,118
This United Airlines deal was found by Cheapflights users on 9/29. 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 10/208:03 am -
1 stop14h 57m
Tue 10/276:00 pm -
1 stop13h 33m
Deal found 9/29![United Airlines logo]()
$1,118
This Delta deal was found by Cheapflights users on 9/26. Clicking the “Pick Dates” 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.
Wed 11/46:20 am -
1 stop16h 35m
Thu 11/194:10 pm -
1 stop18h 06m
Deal found 9/26![Delta logo]()
$1,168
This United Airlines deal was found by Cheapflights users on 9/29. 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.
Wed 10/141:52 pm -
1 stop22h 28m
Wed 10/214:50 pm -
2 stops20h 08m
Deal found 9/29![United Airlines logo]()
$1,122
This Delta deal was found by Cheapflights users on 9/26. Clicking the “Pick Dates” 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.
Thu 11/56:20 am -
1 stop16h 35m
Mon 11/164:10 pm -
1 stop18h 06m
Deal found 9/26![Delta logo]()
$1,168
This United Airlines deal was found by Cheapflights users on 9/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/175:00 am -
2 stops31h 40m
Thu 11/2612:45 pm -
1 stop19h 39m
Deal found 9/30![United Airlines logo]()
$1,122
This Delta deal was found by Cheapflights users on 9/27. Clicking the “Pick Dates” 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.
Fri 10/166:20 am -
1 stop18h 20m
Sun 10/254:10 pm -
1 stop17h 02m
Deal found 9/27![Delta logo]()
$1,268
This United Airlines deal was found by Cheapflights users on 9/27. Clicking the “Pick Dates” 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 11/126:00 am -
1 stop17h 15m
Sat 11/2812:45 pm -
1 stop27h 03m
Deal found 9/27![United Airlines logo]()
$1,174
This Delta deal was found by Cheapflights users on 9/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/56:00 am -
1 stop18h 50m
Fri 10/97:00 pm -
1 stop14h 12m
Deal found 9/30![Delta logo]()
$1,342
Last-minute flights from Ontario to SeoulDiscover last-minute flight deals from Ontario to Seoul. Data last updated October 1, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Seoul. Data last updated October 1, 2026 and is based on user searches.
This Super.com deal was found by Cheapflights users on 9/30. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1412:10 am -
1 stop26h 55m
Thu 10/2212:45 pm -
1 stop21h 15m
Deal found 9/30![China Airlines logo]()
$943
This Super.com deal was found by Cheapflights users on 9/30. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1412:10 am -
1 stop26h 55m
Tue 10/208:05 pm -
1 stop37h 55m
Deal found 9/30![China Airlines logo]()
$945
This Mytrip deal was found by Cheapflights users on 9/27. Clicking the “Pick Dates” 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 10/245:25 pm -
2 stops35h 55m
Sun 11/87:45 pm -
1 stop16h 43m
Deal found 9/27![Multiple Airlines logo]()
$887
This Mytrip deal was found by Cheapflights users on 9/29. 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.
Mon 10/2612:01 pm -
1 stop24h 09m
Fri 11/139:00 pm -
1 stop15h 28m
Deal found 9/29![Multiple Airlines logo]()
$880
This Mytrip deal was found by Cheapflights users on 9/28. Clicking the “Pick Dates” 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 10/2612:01 pm -
1 stop24h 09m
Tue 11/109:00 pm -
2 stops29h 40m
Deal found 9/28![Multiple Airlines logo]()
$909
This Mytrip deal was found by Cheapflights users on 9/29. 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.
Mon 10/2612:01 pm -
1 stop24h 09m
Thu 11/59:00 pm -
1 stop15h 28m
Deal found 9/29![Multiple Airlines logo]()
$924
This Mytrip deal was found by Cheapflights users on 9/29. 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.
Wed 10/2810:35 am -
2 stops18h 45m
Wed 11/117:45 pm -
2 stops32h 31m
Deal found 9/29![Multiple Airlines logo]()
$823
This Mytrip deal was found by Cheapflights users on 9/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/298:35 pm -
2 stops32h 45m
Sat 11/77:45 pm -
2 stops32h 31m
Deal found 9/30![Multiple Airlines logo]()
$851
This Mytrip deal was found by Cheapflights users on 9/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/308:35 pm -
2 stops32h 45m
Sat 11/77:45 pm -
2 stops32h 31m
Deal found 9/30![Multiple Airlines logo]()
$831
This Mytrip deal was found by Cheapflights users on 9/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/3110:00 am -
2 stops19h 20m
Sat 11/77:45 pm -
2 stops32h 31m
Deal found 9/30![Multiple Airlines logo]()
$862
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 October 1, 2026.
Search for one-way flight options from Ontario to Seoul. Find affordable one-way fares based on user searches. Data last updated October 1, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1411:52 am -
2 stops40h 28m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/30![Multiple Airlines logo]()
$349
This Trip.com deal was found by Cheapflights users on 9/28. Clicking the “Pick Dates” 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 10/3012:01 pm -
1 stop17h 19m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/28![Multiple Airlines logo]()
$410
This Mytrip deal was found by Cheapflights users on 9/26. Clicking the “Pick Dates” 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 11/58:35 pm -
2 stops31h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/26![Multiple Airlines logo]()
$437
This Mytrip deal was found by Cheapflights users on 9/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/298:35 pm -
2 stops32h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/30![Multiple Airlines logo]()
$438
This Mytrip deal was found by Cheapflights users on 9/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/612:01 pm -
1 stop16h 19m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/30![Multiple Airlines logo]()
$454
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 October 1, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $788 (Mytrip) |
One-way from | $349 (Kiwi.com) |
Popular in | June |
Cheapest in | November |
Average price | $907 |
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 7,457,451 searches. Data last updated October 1, 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 Ontario - ICN Incheon Intl
ONTICN
Ontario
Thu 12/3
10:50 pm-11:20 am
1 stop19h 30m
Incheon Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$617
OntarioIncheon
ONT Ontario - ICN Incheon Intl
ONTICN
Ontario
Tue 12/1
10:50 pm-11:20 am
1 stop19h 30m
Incheon Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$617
OntarioIncheon
ONT Ontario - ICN Incheon Intl
ONTICN
Ontario
Sat 10/17
6:20 am-4:40 pm
1 stop18h 20m
Incheon Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$713
OntarioIncheon
ONT Ontario - ICN Incheon Intl
ONTICN
Ontario
Fri 10/16
6:20 am-4:40 pm
1 stop18h 20m
Incheon Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$713
OntarioIncheon
ONT Ontario - ICN Incheon Intl
ONTICN
Ontario
Mon 10/12
6:20 am-4:40 pm
1 stop18h 20m
Incheon Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$713
OntarioIncheon
ONT Ontario - ICN Incheon Intl
ONTICN
Ontario
Tue 11/10
5:00 am-5:40 am
2 stops31h 40m
Incheon Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$763
Quickest round-trip
OntarioIncheon
ONT Ontario - ICN Incheon Intl
ONTICN
Ontario
Sat 10/24
7:25 am-5:35 pm
2 stops18h 10m
Incheon Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$766
OntarioIncheon
ONT Ontario - ICN Incheon Intl
ONTICN
Ontario
Fri 10/30
1:32 pm-4:15 pm
2 stops34h 43m
Incheon Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$786
OntarioIncheon
ONT Ontario - ICN Incheon Intl
ONTICN
Ontario
Mon 10/5
5:00 am-4:20 am
2 stops31h 20m
Incheon Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$786
OntarioIncheon
ONT Ontario - ICN Incheon Intl
ONTICN
Ontario
Wed 10/7
5:00 am-4:20 am
2 stops31h 20m
Incheon Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$815
Showing 1-10 of 23 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 October.
| 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
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
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 October 1, 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
Entertainment
8.0
Crew
8.5
Food
7.8
Comfort
8.0
Overall
8.3
Reviews
1 / 20
8.0
ExcellentAnonymous,Sep 2026
SYD - TPE
Boarding
8.3
Entertainment
8.0
Crew
8.5
Food
7.8
Comfort
8.0
Overall
8.3
Reviews
1 / 20
8.0
ExcellentAnonymous,Sep 2026
SYD - 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 October 1, 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 October 1, 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 October 1, 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 7,457,451 searches. Data last updated October 1, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$860 | Average$972 | FlexibilityNo cancel fee | On-time70% |