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Cheap flights Seoul — Ontario

Seoul (SEL, KR) Ontario (ONT, US)
from $446 9 626 km ~11h 49m 3 flights found 3 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: $446 on 09.12.2026
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
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Th
Fr
Sa
Su
December 2026
Mo
Tu
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Su
January 2027
Mo
Tu
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Th
Fr
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Prices found for 3 of 90 days. Prices update as more travellers search. Click any date to search live.
Depart
—
Return
—
Cheapest flights found
09 Dec 2026, Wed
United Airlines UA 892
12:00
ICN Incheon International Airport
00:12
ONT Ontario International Airport
12h 12m 1 stop
Kupi.com
$446
View this ticket
13 Nov 2026, Fri
Air Canada AC 64
12:55
ICN Incheon International Airport
02:37
ONT Ontario International Airport
13h 42m 2 stops
Gotogate
$576
View this ticket
21 Jan 2027, Thu
Alaska Airlines AS 120
14:00
ICN Incheon International Airport
02:46
ONT Ontario International Airport
12h 46m 1 stop
Trip.com
$620
View this ticket
Route characteristics
Distance
9 626 km
Flight time
11h 49m
Time difference
-17h
Minimum price
from $446 (09.12.2026)
Average price
$547
Maximum price
$620
Cheapest day
Wednesday
Departure airports (1)
ICN Incheon International Airport
Arrival airports (1)
ONT Ontario International Airport
Airlines (3)
UA United Airlines AC Air Canada AS Alaska Airlines
Agencies (3)
Kupi.com Gotogate Trip.com
Prices by day of week
Wednesday
$446
avg $446
Cheapest
Thursday
$620
avg $620
Friday
$576
avg $576
Price trend by month
November 2026
from $576
avg $576
1 flights
December 2026
from $446
avg $446
1 flights
January 2027
from $620
avg $620
1 flights
Airlines — cheapest prices 3
United Airlines
United Airlines
1 flights · 1 days
$446
Air Canada
Air Canada
1 flights · 1 days
$576
Alaska Airlines
Alaska Airlines
1 flights · 1 days
$620
Where to buy tickets 3
Kupi.com
1 tickets · 1 days
from $446
Gotogate
1 tickets · 1 days
from $576
Trip.com
1 tickets · 1 days
from $620
Airports

From — Seoul (1)

  • ICN Incheon International Airport

To — Ontario (1)

  • ONT Ontario International Airport
Other destinations from Seoul
Jeju
KR
Nagoya
JP
Busan
KR
Shanghai
CN
Jinju
KR
Pohang
KR
Gwangju
KR
Yeosu
KR
Ulsan
KR
Chengdu
CN
Cebu City
PH
Manila
PH
Frequently asked questions about the route Seoul — Ontario
How long is the flight from Seoul to Ontario?
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 Seoul to Ontario?
The straight-line distance — 9 626 km.
How much do flights from Seoul to Ontario cost?
The minimum price over 3 months — from $446 on 09.12.2026.
What is the average ticket price?
The average price — $547. Range: $446 — $620.
What is the time difference between Seoul and Ontario?
The difference — -17h.
From which airports does Seoul operate flights?
From Seoul: ICN (Incheon International Airport).
To which airports in Ontario do flights arrive?
To Ontario: ONT (Ontario International Airport).
Which airlines fly this route?
This route is served by 3 airlines: United Airlines, Air Canada, Alaska 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 Seoul — Ontario

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

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

3 airlines operate on this route: United Airlines, Air Canada, Alaska Airlines.

The minimum price for the next 3 months — from $446 (09.12.2026). The cheapest dates are highlighted in the calendar above.

The average ticket price — $547, ranging from $446 to $620. Book 1–3 months in advance to get the best deals.

Cheapest day to fly — Wednesday.

Other destinations in United States from Seoul
San Francisco
US
Atlanta
US
Dallas
US
Honolulu
US
Las Vegas
US
Los Angeles
US
Seattle
US
Washington
US

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