Skyscanner

Cheap Flights from Incheon International to Ontario International

Compare Incheon International to Ontario International flight deals

Find the cheapest month or even day of the year to fly to Ontario International

Book the best Ontario International fare with no extra fees

Flight deals from Incheon International to Ontario International

Looking for a cheap last-minute deal or the best return flight from Incheon International to Ontario International? Find the lowest prices on one-way and return tickets right here.
Ontario.R 8,209 per passenger.Departing Wed, 3 Sep.One-way flight with Peach.Outbound indirect flight with Peach, departs from Incheon International on Wed, 3 Sep, arriving in Ontario International.Price includes taxes and charges.From R 8,209, select.
Ontario.R 9,180 per passenger.Departing Thu, 13 Nov.One-way flight with China Airlines.Outbound indirect flight with China Airlines, departs from Incheon International on Thu, 13 Nov, arriving in Ontario International.Price includes taxes and charges.From R 9,180, select.
Ontario.R 9,820 per passenger.Departing Tue, 28 Oct.One-way flight with China Airlines.Outbound indirect flight with China Airlines, departs from Incheon International on Tue, 28 Oct, arriving in Ontario International.Price includes taxes and charges.From R 9,820, select.
Ontario.R 9,858 per passenger.Departing Tue, 2 Jun.One-way flight with China Airlines.Outbound indirect flight with China Airlines, departs from Incheon International on Tue, 2 Jun, arriving in Ontario International.Price includes taxes and charges.From R 9,858, select.
Ontario.R 9,858 per passenger.Departing Mon, 9 Mar.One-way flight with China Airlines.Outbound indirect flight with China Airlines, departs from Incheon International on Mon, 9 Mar, arriving in Ontario International.Price includes taxes and charges.From R 9,858, select.
Ontario.R 9,858 per passenger.Departing Sun, 31 May.One-way flight with China Airlines.Outbound indirect flight with China Airlines, departs from Incheon International on Sun, 31 May, arriving in Ontario International.Price includes taxes and charges.From R 9,858, select.
Ontario.R 9,864 per passenger.Departing Tue, 14 Apr.One-way flight with China Airlines.Outbound indirect flight with China Airlines, departs from Incheon International on Tue, 14 Apr, arriving in Ontario International.Price includes taxes and charges.From R 9,864, select.
Ontario.R 9,864 per passenger.Departing Sun, 1 Feb.One-way flight with China Airlines.Outbound indirect flight with China Airlines, departs from Incheon International on Sun, 1 Feb, arriving in Ontario International.Price includes taxes and charges.From R 9,864, select.

Find the cheapest month to fly from Incheon International to Ontario International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Incheon International to Ontario International flights are currently cheapest in September.
Jul
from R 12,919
Aug
from R 9,875
Sep
from R 8,209
Oct
from R 9,820
Nov
from R 9,180
Dec
from R 9,864
Jan
from R 10,550
Feb
from R 9,864
Mar
from R 9,858
Apr
from R 9,864
May
from R 9,858
Jun
from R 9,858

Incheon International to Ontario International: Alternative routes

Compare routes from Incheon International to Ontario below. You may find an airport to fly into that's cheaper, faster, or easier than Ontario International.

Seoul to Ontario: Flight information

The things to know before you go.
Cheapest flight foundR 8,209
Cheapest month to flySeptember

Finding cheap flights from Incheon International to Ontario International: Frequently asked questions

The best price we found for a return flight from Incheon International to Ontario International is R 10,763. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Incheon International to Ontario International. But we found flights with one or more stops from R 10,763.
As of July 2025, there are no flights flying from Incheon International to Ontario International.
The cheapest month to fly from Incheon International to Ontario International is usually October.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Incheon International Airport to Ontario International Airport on Friday, 24 October 2025.
No airlines currently offer direct flights between Incheon International Airport and Ontario International Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Ontario International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Ontario is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Lufthansa offers the cheapest flight tickets to Ontario International.

Flying from Incheon International Airport (ICN) to Ontario International Airport (ONT): what you need to know

  • Ontario's timezone is UTC-7, making Ontario 16 hours behind Seoul.

  • Leave plenty of time to make your ICN to ONT flight. As a rule of thumb, arrive at least two hours before international departures and an hour ahead for domestic flights.

  • During popular months such as July, you'll want to get to the airport earlier than normal. Plan to arrive two hours before a domestic departure and four hours ahead of an international flight when you fly during a peak period in general.

  • We make it simple to book a flight with a stopover. To see all your options for tickets from Incheon International Airport to Ontario International Airport, uncheck 'Direct flights only.' Then, pick a flight that has a stop long enough to tour your chosen city. Worthwhile stopovers between ICN and ONT include:

    • Harry Reid Airport (formerly McCarran Airport)

    • Seattle-Tacoma International Airport

    • Daniel K. Inouye International Airport

How to find the cheapest flights from Incheon International Airport (ICN) to Ontario International Airport (ONT)

  • The lowest price we've seen for a one-way Incheon International Airport to Ontario International Airport flight is R 8,209. A round-trip fare right now is R 10,763. Depending on the availability when you book, these fares may change.

  • To get your hands on cheap tickets from ICN to ONT, book in advance. Airlines usually offer their best fares when flights are first made available.

  • The 'Whole month' tool shows you the cheapest flights from Incheon International Airport to Ontario International Airport across each month. It's an easy way to find a bargain if your trip dates aren't set in stone.

  • Cut down on the time spent looking for cheap flights from ICN to ONT by setting up a Price Alert. We'll send you an email or notification on the app when a lower fare becomes available.

  • Discover the perfect flight for you with the help of the filters. To see the 'Fastest,' 'Cheapest' or 'Best' flights from Incheon International Airport to Ontario International Airport, use the 'Sort by' function. You can also filter by airline, arrival and departure times, and journey duration.

Handy information about Incheon International Airport (ICN)

  • Of all flights departing from Incheon International Airport, 54.5% arrive on time at their destination.

  • The journey from central Seoul to Incheon International Airport is around 48 kilometres. Look up travel apps like Google Maps for the best way to get there, whether that's in your own car or with public transport.

  • The trip when using public transport takes about 1 hour 45 minutes.

  • Booked an early flight from Incheon International Airport to Ontario International Airport? Avoid rushing to the terminal (and catch some extra z's) by choosing one of these stays near ICN:

Arriving at Ontario International Airport (ONT)

Getting from Ontario International Airport (ONT) to central Ontario

  • The street address for ONT is 2900 E. Airport Drive.

  • Ontario International Airport is roughly 6 kilometres from central Ontario. The drive time takes about 10 minutes.

  • It takes around 1 hour 30 minutes if you're travelling on public transport.

When to fly to Ontario International Airport (ONT)

  • August is the busiest month for flights from Incheon International Airport to Ontario International Airport. To steer clear of the crowds, visit Ontario in May.

  • Before locking in your flight from Incheon International Airport to Ontario International Airport, think about the kind of weather you enjoy. August is the warmest month in Ontario, with the temperature ranging from 15ºC (59ºF) to 35ºC (95ºF).

  • Look for cheap tickets from ICN to ONT in January if you like travelling in cooler conditions. Temperatures are at their lowest around then, ranging between 4ºC (39ºF) and 23ºC (73ºF) on average.

Explore more of United States

  • You've done Ontario, now it's time to discover other corners of United States. Journey around 56 kilometres west to Los Angeles to tick off its leading sights. From Griffith Observatory to The Broad and La Brea Tar Pits & Museum, you've got a jam-packed schedule ahead.

  • Around 153 kilometres south of Ontario, San Diego is another favourite stop in United States. Get a taste of what this destination has to offer at San Diego Zoo, USS Midway Museum and SeaWorld San Diego.

Plan the rest of your trip from Seoul to Ontario

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.