Cheap flights from Ontario to Seoul from $436
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 1/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Fly from
Fly to
Route
Depart
Return
OntarioIncheon
ONT Ontario - ICN Incheon Intl
ONTICN
Ontario
Tue 11/3
5:07 pm-9:20 pm
2 stops35h 13m
Incheon Intl
Sun 11/8
7:45 pm-7:30 pm
1 stop16h 45m
OntarioIncheon
ONT Ontario - ICN Incheon Intl
ONTICN
Ontario
Fri 10/30
12:01 pm-9:20 pm
1 stop17h 19m
Incheon Intl
Fri 11/6
7:45 pm-7:30 pm
1 stop16h 45m
OntarioIncheon
ONT Ontario - ICN Incheon Intl
ONTICN
Ontario
Fri 10/30
12:01 pm-9:20 pm
1 stop17h 19m
Incheon Intl
Fri 11/6
7:45 pm-7:30 pm
1 stop16h 45m
OntarioIncheon
ONT Ontario - ICN Incheon Intl
ONTICN
Ontario
Sun 11/8
12:01 pm-9:20 pm
1 stop16h 19m
Incheon Intl
Fri 11/13
7:45 pm-7:30 pm
1 stop16h 45m
OntarioIncheon
ONT Ontario - ICN Incheon Intl
ONTICN
Ontario
Thu 11/5
8:35 pm-9:20 pm
2 stops31h 45m
Incheon Intl
Sun 11/8
7:45 pm-7:30 pm
1 stop16h 45m
OntarioIncheon
ONT Ontario - ICN Incheon Intl
ONTICN
Ontario
Sun 11/8
12:01 pm-9:20 pm
1 stop16h 19m
Incheon Intl
Sun 11/22
7:45 pm-12:24 am
1 stop21h 39m
OntarioIncheon
ONT Ontario - ICN Incheon Intl
ONTICN
Ontario
Fri 10/30
8:35 pm-9:20 pm
2 stops32h 45m
Incheon Intl
Fri 11/6
7:45 pm-7:30 pm
1 stop16h 45m
OntarioIncheon
ONT Ontario - ICN Incheon Intl
ONTICN
Ontario
Tue 11/3
5:07 pm-9:20 pm
2 stops35h 13m
Incheon Intl
Sun 11/8
7:45 pm-7:30 pm
1 stop16h 45m
OntarioIncheon
ONT Ontario - ICN Incheon Intl
ONTICN
Ontario
Mon 3/1
10:50 pm-11:20 am
1 stop19h 30m
Incheon Intl
Sun 3/7
8:15 pm-5:05 pm
1 stop37h 50m
OntarioIncheon
ONT Ontario - ICN Incheon Intl
ONTICN
Ontario
Fri 2/26
10:50 pm-11:20 am
1 stop19h 30m
Incheon Intl
Sat 3/13
8:15 pm-5:05 pm
1 stop37h 50m
See travel insights to Seoul from
How to get the cheapest flight ticket from Ontario to Seoul
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 day to depart on your flight to Seoul?
According to our data, Tuesday is the cheapest day to fly to Seoul from Ontario. The lowest ticket price found for a Tuesday departure recently was $800. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Seoul is Saturday, with ticket prices averaging around $934.
What is the cheapest time of day to depart on your flight to Seoul?
Flying to Seoul from Ontario in the evening is the least expensive time of day to depart. momondo users have found prices as low as $810 when looking at flights departing in the evening. At noon is when there is more demand to fly to Seoul, so prices are often more expensive at around $968 per ticket.
What is the cheapest airline that flies from Ontario to Seoul?
China Airlines, Alaska Airlines, and United Airlines are the most popular carriers operating from Ontario to Seoul
What airlines fly to Seoul?
AIR PREMIA, Asiana Airlines and Korean Air are the top three most popular airlines that fly to Seoul from Ontario according to our data. AIR PREMIA is the first choice among our users, with 75% of people opting to fly with this airline when traveling to Seoul. Keep in mind that there are 15 different airlines that fly to Seoul on a routine basis, so you have a few additional options to choose from.
When to book flights from Ontario to Seoul
Cheap Ontario to Seoul (ONT to SEL) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Ontario to Seoul
Frequently asked questions about flying from Ontario to Seoul
How far is Ontario to Seoul by plane?
Seoul is 5976.3 mi away from Ontario. By plane, this route typically takes 15h 55m.
When did momondo last update prices for flights from Ontario Airport to Seoul?
Prices for flights from Ontario Airport to Seoul are updated daily.
How many operators does momondo search for flights from Ontario Airport to Seoul?
There is 1 operator available for flights from Ontario Airport to Seoul as of October 2026.
How old do you have to be to fly from Ontario Airport to Seoul?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ontario Airport to Seoul.
What documentation or ID do you need to fly to Seoul?
The necessary travel and health documents for your Seoul 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.
Best airlines flying from Ontario to Seoul
Compare and see reviews for airlines that fly from Ontario to Seoul with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $860 | Free Cancellation | Rating 8.3 851 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Ontario to Seoul?
We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Ontario to Seoul for you.
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?
Once you have performed a search for Ontario to Seoul flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.
I’m not ready to book a flight from Ontario to Seoul right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of Ontario to Seoul flights. All you need is a valid email address and we will do the rest; it is that quick and easy.