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Cheap flights Ontario — Seoul

Ontario (ONT, US) Seoul (SEL, KR)
from $587 9 626 km ~11h 49m 3 flights found 1 airlines cheapest on Wednesday
Reverse route
How many travellers?
Adults
12+ years
1
Children
2–11 years
0
Infants
under 2
0
Choose your departure date
Cheapest: $587 on 06.01.2027
Prices shown are from searches by other travellers over the last 24 hours. Missing a date? Click any day — we'll find tickets anyway.
November 2026
Mo
Tu
We
Th
Fr
Sa
Su
December 2026
Mo
Tu
We
Th
Fr
Sa
Su
January 2027
Mo
Tu
We
Th
Fr
Sa
Su
Prices found for 3 of 90 days. Prices update as more travellers search. Click any date to search live.
Depart
—
Return
—
Cheapest flights found
06 Jan 2027, Wed
China Airlines CI 023
09:50
ONT Ontario International Airport
03:00
ICN Incheon International Airport
17h 10m 1 stop
Farera
$587
View this ticket
27 Nov 2026, Fri
China Airlines CI 023
09:50
ONT Ontario International Airport
03:05
ICN Incheon International Airport
17h 15m 1 stop
Farera
$639
View this ticket
04 Dec 2026, Fri
China Airlines CI 23
09:50
ONT Ontario International Airport
03:05
ICN Incheon International Airport
17h 15m 1 stop
Trip.com
$655
View this ticket
Route characteristics
Distance
9 626 km
Flight time
11h 49m
Time difference
+17h
Minimum price
from $587 (06.01.2027)
Average price
$627
Maximum price
$655
Cheapest day
Wednesday
Departure airports (1)
ONT Ontario International Airport
Arrival airports (1)
ICN Incheon International Airport
Airlines (1)
CI China Airlines
Agencies (2)
Farera Trip.com
Prices by day of week
Wednesday
$587
avg $587
Cheapest
Friday
$639
avg $647
Price trend by month
November 2026
from $639
avg $639
1 flights
December 2026
from $655
avg $655
1 flights
January 2027
from $587
avg $587
1 flights
Airlines — cheapest prices 1
China Airlines
China Airlines
3 flights · 3 days
$587
Where to buy tickets 2
Farera
2 tickets · 2 days
from $587
Trip.com
1 tickets · 1 days
from $655
Airports

From — Ontario (1)

  • ONT Ontario International Airport

To — Seoul (1)

  • ICN Incheon International Airport
Other destinations from Ontario
Albuquerque
US
Accra
GH
Nantucket
US
Adelaide
AU
San Andres Island
CO
Malaga
ES · Hub
Auckland
NZ
Almaty
KZ
Alicante
ES
Ahmedabad
IN
Amsterdam
NL · Hub
Anchorage
US
Frequently asked questions about the route Ontario — Seoul
How long is the flight from Ontario to Seoul?
Approximate flight time — 11h 49m. This is an average for a direct flight. With connections, the time may be longer.
What is the distance from Ontario to Seoul?
The straight-line distance — 9 626 km.
How much do flights from Ontario to Seoul cost?
The minimum price over 3 months — from $587 on 06.01.2027.
What is the average ticket price?
The average price — $627. Range: $587 — $655.
What is the time difference between Ontario and Seoul?
The difference — +17h.
From which airports does Ontario operate flights?
From Ontario: ONT (Ontario International Airport).
To which airports in Seoul do flights arrive?
To Seoul: ICN (Incheon International Airport).
Which airlines fly this route?
This route is served by 1 airline: China Airlines.
Which day of the week is cheapest?
The cheapest day of the week — Wednesday.
When is the best time to buy tickets?
Optimal — 1–3 months before departure. Check the calendar above — it shows the best dates.
How do I book flights?
Click "View this ticket" on any flight card — you'll be redirected to the booking page with this specific ticket pre-selected.
About the route Ontario — Seoul

Flights Ontario — Seoul is a popular route. The straight-line distance is 9 626 km. Flight time 11h 49m. Time difference +17h.

From Ontario (ONT) flights depart from 1 airport: ONT. To Seoul (SEL) — 1 arrival airport: ICN.

1 airline operate on this route: China Airlines.

The minimum price for the next 3 months — from $587 (06.01.2027). The cheapest dates are highlighted in the calendar above.

The average ticket price — $627, ranging from $587 to $655. Book 1–3 months in advance to get the best deals.

Cheapest day to fly — Wednesday.

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