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Ontario

$433+ Cheap flights from Seoul (SEL) to Ontario (ONT)

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 3/13. Fares are subject to change and may not be available on all flights or dates of travel.
SEL — ONT
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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Cheap flight deals from Seoul to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Seoul (SEL) to Ontario (ONT). 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 February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$590
(Trip.com)

One-way from

$433
(United Airlines)

Popular in

August

Cheapest in

February

Average price

$708
Provider with most accurate pricing for Seoul (SEL)-Ontario flight deals.
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Provider most trusted by Cheapflights users for Seoul (SEL)-Ontario flights.
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From Seoul (SEL) to Ontario
Search Deals
One-way flight from Seoul (SEL) to Ontario
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($194 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($32 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Find flight deals from Seoul to Ontario

Cheapest flights from Seoul to Ontario
Explore the most affordable flight options available from Seoul to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

This Trip.com deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/26:55 pmICN - ONT
1 stop31h 39mMultiple Airlines
Fri 3/78:26 amONT - ICN
1 stop19h 04mMultiple Airlines
Deal found 2/19$590
This United Airlines deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/66:00 pmICN - ONT
1 stop21h 45mUnited Airlines
Fri 3/216:00 amONT - ICN
1 stop17h 15mUnited Airlines
Deal found 2/20$697
This Gotogate deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/38:35 pmICN - ONT
1 stop37h 25mChina Airlines
Mon 5/512:10 amONT - ICN
1 stop27h 25mChina Airlines
Deal found 2/19$803
This American Airlines deal was found by Cheapflights users on 2/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/66:50 pmICN - ONT
2 stops20h 10mAmerican Airlines
Mon 3/1011:59 pmONT - ICN
1 stop23h 56mAmerican Airlines
Deal found 2/20$854
This hutchgo.com deal was found by Cheapflights users on 2/20. 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 hutchgo.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/219:25 pmICN - ONT
1 stop16h 30mHawaiian Airlines
Sun 5/259:50 amONT - ICN
1 stop17h 10mHawaiian Airlines
Deal found 2/20$964
This Delta deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/188:05 pmICN - ONT
1 stop30h 57mDelta
Tue 4/295:45 amONT - ICN
1 stop18h 45mDelta
Deal found 2/19$1,079
This Onlinetour deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Onlinetour is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/254:40 pmICN - ONT
1 stop16h 03mKorean Air
Mon 7/217:00 amONT - ICN
1 stop17h 40mKorean Air
Deal found 2/19$1,155
This WestJet deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/186:25 pmICN - ONT
2 stops38h 17mWestJet
Tue 4/2911:45 amONT - ICN
2 stops63h 00mWestJet
Deal found 2/19$1,344
This Air Canada deal was found by Cheapflights users on 2/20. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/274:55 pmICN - ONT
2 stops44h 45mAir Canada
Tue 3/116:00 amONT - ICN
2 stops41h 25mAir Canada
Deal found 2/20$1,693

Find flights from Seoul to Ontario within your budget

Customize your flight search to find flights from Seoul to Ontario 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 February 20, 2025.

Fly from

Seoul

Fly to

Ontario

Route

Depart

Return

Price

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Sun 3/2

6:55 pm-9:34 am

1 stop31h 39m

Ontario

Fri 3/7

8:26 am-8:30 pm

1 stop19h 04m

$590

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Thu 3/6

6:00 pm-10:45 pm

1 stop21h 45m

Ontario

Fri 3/21

6:00 am-3:15 pm

1 stop17h 15m

$697

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Sat 5/3

8:35 pm-6:00 pm

1 stop37h 25m

Ontario

Mon 5/5

12:10 am-7:35 pm

1 stop27h 25m

$803

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Thu 3/6

6:50 pm-10:00 pm

2 stops20h 10m

Ontario

Mon 3/10

11:59 pm-3:55 pm

1 stop23h 56m

$854

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Wed 5/21

9:25 pm-9:55 pm

1 stop16h 30m

Ontario

Sun 5/25

9:50 am-7:00 pm

1 stop17h 10m

$964

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Tue 3/18

8:05 pm-11:02 am

1 stop30h 57m

Ontario

Tue 4/29

5:45 am-4:30 pm

1 stop18h 45m

$1,079

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Fri 4/25

4:40 pm-4:43 pm

1 stop16h 03m

Ontario

Mon 7/21

7:00 am-4:40 pm

1 stop17h 40m

$1,155

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Tue 3/18

6:25 pm-4:42 pm

2 stops38h 17m

Ontario

Tue 4/29

11:45 am-6:45 pm

2 stops63h 00m

$1,344

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Wed 3/5

12:20 am-11:24 pm

2 stops40h 04m

Ontario

Thu 3/13

11:57 am-5:15 pm

2 stops37h 18m

$1,995

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Mon 5/26

6:00 pm-9:22 pm

2 stops43h 22m

Ontario

Tue 8/12

11:45 pm-10:40 pm

2 stops54h 55m

$2,133

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 22 results
1
2
3
  • Most accurate provider: When it comes to deals on Seoul-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seoul-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seoul-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seoul-Ontario 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 Seoul-Ontario 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 Seoul to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Seoul with our price prediction graph.
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.

Travel insights for flights from Seoul to Ontario

Get recent, data-driven insights about flights from Seoul to Ontario including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Seoul to Ontario?

Currently, August is the cheapest month in which you can book a flight from Seoul to Ontario (average of $246). Flying from Seoul to Ontario in March is currently the most expensive (average of $315). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SEL to ONT?

Find hourly flight availability from Seoul to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 20, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seoul to Ontario as you normally would.

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated February 20, 2025.
Read reviews from past customers who have flown Korean Air, Japan Airlines and China Airlines from Seoul to Ontario. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,037 reviews

Food

8.1

Boarding

8.5

Comfort

8.3

Overall

8.4

Crew

8.7

Entertainment

8.2

Reviews

1 / 20

6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.

Korean Air
8.4
Very good
1,037 reviews
Korean Air
8.4
Very good
1,037 reviews

Food

8.1

Boarding

8.5

Comfort

8.3

Overall

8.4

Crew

8.7

Entertainment

8.2

Reviews

1 / 20

6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.

Japan Airlines
8.3
Very good
1,440 reviews
Korean Air
8.4
Very good
1,037 reviews

Food

8.1

Boarding

8.5

Comfort

8.3

Overall

8.4

Crew

8.7

Entertainment

8.2

Reviews

1 / 20

6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.

China Airlines
8.2
Very good
727 reviews
Korean Air
8.4
Very good
1,037 reviews

Food

8.1

Boarding

8.5

Comfort

8.3

Overall

8.4

Crew

8.7

Entertainment

8.2

Reviews

1 / 20

6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.

Delta
8.0
Very good
8,219 reviews
Korean Air
8.4
Very good
1,037 reviews

Food

8.1

Boarding

8.5

Comfort

8.3

Overall

8.4

Crew

8.7

Entertainment

8.2

Reviews

1 / 20

6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.

Hawaiian Airlines
7.9
Good
2,317 reviews
Korean Air
8.4
Very good
1,037 reviews

Food

8.1

Boarding

8.5

Comfort

8.3

Overall

8.4

Crew

8.7

Entertainment

8.2

Reviews

1 / 20

6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.

Related info for your journey

Find useful and relevant information for your journey from Seoul to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Ontario from Seoul?

    If you book a flight to Ontario from Seoul, you will be flying to Ontario, which is the city’s only airport. Ontario (ONT) is located 3.1 mi from the center of Ontario. There are 0 flights from Seoul to Ontario per day from 1 airline.

  • What are the cheapest airlines flying from Seoul to Ontario round-trip?

    Our cheapest airline available from Seoul to Ontario is United Airlines. Our recent data shows that you can find tickets from as low as $697 on this airline. Additional options worth looking into are China Airlines and American Airlines, starting at $803 and $854 round-trip.

  • What are the cheapest airlines to fly from Seoul to Ontario one-way?

    For one-way options, check prices for United Airlines. According to our data, you can fly for as low as $433. Users have also found prices from $541 and $569 on China Airlines and WestJet, respectively.

  • Can I find deals for flights from Seoul to Ontario that include hotel bookings?

    Yes. In addition to deals on Seoul to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seoul to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seoul to Ontario.

  • Can I find deals for business class flights from Seoul to Ontario?

    Yes. Cheapflights offers flight deals from Seoul to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seoul to Ontario?

    Currently, August is the cheapest month in which you can book a flight from Seoul to Ontario (average of $246). Flying from Seoul to Ontario in March is currently the most expensive (average of $315). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Seoul to Ontario

Discover the top airline that operate flights from Seoul to Ontario. 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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$674Average$784FlexibilityNo cancel feeOn-time69%
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