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Cheap flights from Ontario to Seoul from $424

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Seoul departing on 8/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Ontario to Seoul

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
1:27 pm - 6:45 pm
ONT
-
ICN
37h 18m
2 stops
Multiple Airlines Logo
7:15 pm - 10:58 am
ICN
-
ONT
31h 43m
1 stop
$1,051Multiple Airlines
mar., ago. 18 - mié., ago. 26
Multiple Airlines Logo
8:33 pm - 6:45 pm
ONT
-
ICN
30h 12m
2 stops
Multiple Airlines Logo
7:15 pm - 10:58 am
ICN
-
ONT
31h 43m
1 stop
$1,063Multiple Airlines
jue., ago. 20 - mié., ago. 26
Multiple Airlines Logo
3:34 pm - 6:45 pm
ONT
-
ICN
35h 11m
2 stops
Multiple Airlines Logo
7:15 pm - 12:42 pm
ICN
-
ONT
33h 27m
1 stop
$1,073Multiple Airlines
mié., ago. 19 - lun., ago. 24
Multiple Airlines Logo
8:33 pm - 6:45 pm
ONT
-
ICN
30h 12m
2 stops
Multiple Airlines Logo
7:15 pm - 12:42 pm
ICN
-
ONT
33h 27m
1 stop
$1,085Multiple Airlines
jue., ago. 20 - lun., ago. 24
Multiple Airlines Logo
8:33 pm - 6:45 pm
ONT
-
ICN
30h 12m
2 stops
Multiple Airlines Logo
7:15 pm - 10:58 am
ICN
-
ONT
31h 43m
1 stop
$1,086Multiple Airlines
mar., ago. 18 - dom., ago. 23
Multiple Airlines Logo
8:33 pm - 6:45 pm
ONT
-
ICN
30h 12m
2 stops
Multiple Airlines Logo
7:15 pm - 10:58 am
ICN
-
ONT
31h 43m
1 stop
$1,087Multiple Airlines
mar., ago. 18 - vie., ago. 21
Multiple Airlines Logo
6:00 am - 6:45 pm
ONT
-
ICN
20h 45m
2 stops
Multiple Airlines Logo
7:15 pm - 10:58 am
ICN
-
ONT
31h 43m
1 stop
$1,088Multiple Airlines
mié., ago. 19 - vie., ago. 21
Multiple Airlines Logo
1:27 pm - 6:45 pm
ONT
-
ICN
37h 18m
2 stops
Multiple Airlines Logo
9:05 am - 5:40 pm
ICN
-
ONT
24h 35m
1 stop
$1,089Multiple Airlines
mar., ago. 18 - lun., ago. 24
China Airlines Logo
12:45 am - 11:30 am
ONT
-
ICN
18h 45m
1 stop
China Airlines Logo
12:45 pm - 6:40 pm
ICN
-
ONT
21h 55m
1 stop
$1,095China Airlines
dom., ago. 2 - vie., sep. 4
Multiple Airlines Logo
1:38 pm - 6:45 pm
ONT
-
ICN
37h 07m
2 stops
Multiple Airlines Logo
12:30 am - 5:40 pm
ICN
-
ONT
33h 10m
1 stop
$1,101Multiple Airlines
mar., ago. 4 - jue., ago. 20

WestJet flights from Ontario to Incheon Intl Airport

Our best WestJet deals on Ontario to Incheon Intl Airport flight tickets
WestJet
Aug 12
ONT6:20 amOntario
20h 25m
2 stops
ICN6:45 pmIncheon Intl
Sep 14
ICN8:45 pmIncheon Intl
36h 35m
2 stops
ONT5:20 pmOntario
$1,162
WestJet
Jun 12
ONT6:20 amOntario
20h 25m
2 stops
ICN6:45 pmIncheon Intl
Jul 16
ICN8:45 pmIncheon Intl
18h 07m
2 stops
ONT10:52 pmOntario
$1,534
WestJet
Jun 12
ONT6:20 amOntario
20h 25m
2 stops
ICN6:45 pmIncheon Intl
Jul 17
ICN8:45 pmIncheon Intl
18h 07m
2 stops
ONT10:52 pmOntario
$1,574

Qatar Airways flights from Ontario to Incheon Intl Airport

Our best Qatar Airways deals on Ontario to Incheon Intl Airport flight tickets
Qatar Airways
Oct 1
ONT12:12 pmOntario
36h 53m
2 stops
ICN5:05 pmIncheon Intl
Oct 21
ICN1:20 amIncheon Intl
32h 40m
2 stops
ONT6:00 pmOntario
$1,170
Qatar Airways
Sep 29
ONT12:12 pmOntario
36h 53m
2 stops
ICN5:05 pmIncheon Intl
Nov 1
ICN12:20 amIncheon Intl
35h 08m
2 stops
ONT6:28 pmOntario
$1,171
Qatar Airways
Nov 10
ONT4:09 pmOntario
49h 21m
2 stops
ICN10:30 amIncheon Intl
Nov 16
ICN12:20 amIncheon Intl
39h 34m
2 stops
ONT10:54 pmOntario
$1,177

momondo Fare Finder

 
Customize your flight search to find flights from Ontario to Incheon Intl Airport 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, momondo users made 832,500 searches. Data last updated junio 2, 2026.
Use the filters below to find and compare flights from Ontario to Incheon Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioIncheon

ONT - ICN

ONTICN

Ontario

mar. 8/18

1:27 pm-6:45 pm

2 stops37h 18m

Incheon Intl

mié. 8/26

7:15 pm-10:58 am

1 stop31h 43m

$1,051

OntarioIncheon

ONT - ICN

ONTICN

Ontario

jue. 8/20

8:33 pm-6:45 pm

2 stops30h 12m

Incheon Intl

mié. 8/26

7:15 pm-10:58 am

1 stop31h 43m

$1,063

OntarioIncheon

ONT - ICN

ONTICN

Ontario

mié. 8/19

3:34 pm-6:45 pm

2 stops35h 11m

Incheon Intl

lun. 8/24

7:15 pm-12:42 pm

1 stop33h 27m

$1,073

OntarioIncheon

ONT - ICN

ONTICN

Ontario

jue. 8/20

8:33 pm-6:45 pm

2 stops30h 12m

Incheon Intl

lun. 8/24

7:15 pm-12:42 pm

1 stop33h 27m

$1,085

OntarioIncheon

ONT - ICN

ONTICN

Ontario

mar. 8/18

8:33 pm-6:45 pm

2 stops30h 12m

Incheon Intl

dom. 8/23

7:15 pm-10:58 am

1 stop31h 43m

$1,086

OntarioIncheon

ONT - ICN

ONTICN

Ontario

mar. 8/18

8:33 pm-6:45 pm

2 stops30h 12m

Incheon Intl

vie. 8/21

7:15 pm-10:58 am

1 stop31h 43m

$1,087

OntarioIncheon

ONT - ICN

ONTICN

Ontario

mié. 8/19

6:00 am-6:45 pm

2 stops20h 45m

Incheon Intl

vie. 8/21

7:15 pm-10:58 am

1 stop31h 43m

$1,088

OntarioIncheon

ONT - ICN

ONTICN

Ontario

mar. 8/18

1:27 pm-6:45 pm

2 stops37h 18m

Incheon Intl

lun. 8/24

9:05 am-5:40 pm

1 stop24h 35m

$1,089
Quickest round-trip

OntarioIncheon

ONT - ICN

ONTICN

Ontario

dom. 8/2

12:45 am-11:30 am

1 stop18h 45m

Incheon Intl

vie. 9/4

12:45 pm-6:40 pm

1 stop21h 55m

$1,095

OntarioIncheon

ONT - ICN

ONTICN

Ontario

mar. 8/4

1:38 pm-6:45 pm

2 stops37h 07m

Incheon Intl

jue. 8/20

12:30 am-5:40 pm

1 stop33h 10m

$1,101

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Seoul from

How to get the cheapest flight ticket from Ontario to Incheon Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Incheon Intl Airport?

The cheapest month to fly to Incheon Intl Airport from Ontario is in July. Flight prices, which tend to average around $0, are often lower during this time because this is during the off-season. If you are unable to visit Incheon Intl Airport during the month of July, then departing from Ontario during the month February is also very affordable. Most momondo users find prices during this month for around $902.

What is the cheapest day to depart on your flight to Incheon Intl Airport?

The cheapest day to depart from Ontario to Incheon Intl Airport is on a Sunday when prices can be found for as low as $733. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $912. These prices are subject to change though, so be sure to set up a Price Alert for flights to Incheon Intl Airport.

What is the cheapest time of day to depart on your flight to Incheon Intl Airport?

In the evening is the cheapest time of day to fly from Ontario to Incheon Intl Airport when you can find flight prices for as low as $768. Flying to Incheon Intl Airport in the evening is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $1,014 on average. Flights to Incheon Intl Airport from Ontario at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

When to book flights from Ontario to Incheon Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Incheon Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Ontario to Incheon Intl Airport (ONT to ICN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Incheon Intl Airport

Fastest flight time

17h 00m

Direct flights

None
The fastest flight from Ontario to Incheon Intl Airport takes 17h 00m
There are no direct flights from Ontario to Incheon Intl Airport. There are no popular flight routes from Ontario to Incheon Intl Airport.
Search flight deals

Frequently asked questions about flying from Ontario to Incheon Intl Airport

  • How far is Ontario to Incheon Intl by plane?

    The distance between Ontario and Incheon Intl is about 6003.0 mi. Flights usually cover this in 17h 00m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Ontario Airport to Incheon Intl Airport?

    Prices for flights from Ontario Airport to Incheon Intl Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Ontario Airport to Incheon Intl Airport?

  • How old do you have to be to fly from Ontario Airport to Incheon Intl Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Incheon Intl Airport.

  • What documentation or ID do you need to fly to Incheon Intl Airport?

    The necessary travel and health documents for your Incheon Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Ontario to Incheon Intl Airport?

Best airlines flying from Ontario to Incheon Intl Airport

Compare and see reviews for airlines that fly from Ontario to Incheon Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
China AirlinesPriceFrom $860Free CancellationRating
8.3
828 reviews
Search China Airlines flights

Traveling to a place near Seoul?

Book flights to Seoul if you plan to visit one of these locations
Suwon
Daejeon
Seongnam
Anyang

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Seoul?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Seoul from Ontario.

Can I find flights from Ontario to Seoul with flexible booking policies on momondo?

momondo does allow users to show only those flights to Seoul from Ontario which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Ontario to Seoul?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Ontario to Seoul.

I’m not ready to book a flight from Ontario to Seoul right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Ontario to Seoul flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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