ICN - ONT

$495 Find Cheap Flights from Incheon to Ontario

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Incheon to Ontario departing on 5/21. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult

KAYAK searches hundreds of travel sites at once for deals on flights to Ontario

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Incheon to Ontario, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Incheon to Ontario, as well as popular online travel agencies
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Flights Deals

Cheap Flight Deals from Incheon to Ontario (ICN-ONT)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Incheon to Ontario that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals from Incheon to Ontario

KAYAK's recommended round-trip deals from the most popular airlines that fly from Incheon to Ontario.
Discover the best prices for you by selecting your travel dates on KAYAK.
United Airlines Logo
11:30 am - 12:14 pmICN-ONT
16h 44m1 stop
United Airlines Logo
6:00 am - 3:00 pmONT-ICN
17h 00m1 stop
$512United Airlines
Find Deal
Tue, Jun 3 - Mon, Sep 1
United Airlines Logo
11:30 am - 12:14 pmICN-ONT
16h 44m1 stop
United Airlines Logo
6:00 am - 3:15 pmONT-ICN
17h 15m1 stop
$521United Airlines
Find Deal
Wed, Jun 4 - Tue, Oct 28
 Logo
6:20 pm - 10:46 pmICN-ONT
20h 26m1 stop
 Logo
6:00 am - 5:55 pmONT-ICN
19h 55m1 stop
Wed, May 21 - Mon, Jun 2
 Logo
4:40 pm - 3:50 pmICN-ONT
15h 10m1 stop
 Logo
6:00 am - 4:40 pmONT-ICN
18h 40m1 stop
Wed, May 21 - Sun, Jun 1
China Airlines Logo
12:35 pm - 6:00 pmICN-ONT
21h 25m1 stop
China Airlines Logo
12:10 am - 7:35 pmONT-ICN
27h 25m1 stop
$856China Airlines
Find Deal
Wed, Sep 17 - Sun, Sep 21
China Airlines Logo
8:35 pm - 6:40 pmICN-ONT
38h 05m1 stop
China Airlines Logo
12:45 am - 7:35 pmONT-ICN
26h 50m1 stop
$858China Airlines
Find Deal
Fri, Aug 29 - Sat, Sep 6
Alaska Airlines Logo
9:25 pm - 9:55 pmICN-ONT
16h 30m1 stop
Alaska Airlines Logo
9:50 am - 7:00 pmONT-ICN
17h 10m1 stop
$872Alaska Airlines
Find Deal
Fri, May 23 - Tue, Jun 3
Hawaiian Airlines Logo
9:25 pm - 9:50 pmICN-ONT
16h 25m1 stop
Hawaiian Airlines Logo
9:50 am - 7:00 pmONT-ICN
17h 10m1 stop
$885Hawaiian Airlines
Find Deal
Mon, May 12 - Sat, May 17
Hawaiian Airlines Logo
9:25 pm - 9:55 pmICN-ONT
16h 30m1 stop
Hawaiian Airlines Logo
9:50 am - 7:00 pmONT-ICN
17h 10m1 stop
$895Hawaiian Airlines
Find Deal
Wed, May 21 - Sun, May 25
Alaska Airlines Logo
9:25 pm - 9:55 pmICN-ONT
16h 30m1 stop
Alaska Airlines Logo
9:50 am - 7:00 pmONT-ICN
17h 10m1 stop
$899Alaska Airlines
Find Deal
Fri, May 23 - Sun, May 25
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KAYAK's insights & trends for Incheon to Ontario flights

Get data-powered insights and trends into flights from Incheon to Ontario to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Incheon to Ontario?

The average price of all round-trip flights from Incheon Intl Airport to Ontario clicked on KAYAK for each day over the last 12 months.

For Incheon to Ontario, Friday is the cheapest day to fly on average and Wednesday is the most expensive. Flying from Ontario back to Incheon, the best deals are generally found on Friday, with Saturday being the most expensive.

Good to know

Low seasonJune
High seasonApril
Cheapest flight$495
Best time to beat the crowds with an average 19% drop in price.
Most popular time to fly and prices are also 5% lower on average.
Flight from Incheon to Ontario

When to book flights from Incheon to Ontario

Are your dates flexible? Find out the best times to travel from Incheon to Ontario based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Incheon to Ontario flights

  • What is the cheapest flight from Incheon Intl Airport to Ontario?

    In the last 3 days, the lowest price for a flight from Incheon Intl Airport to Ontario was $495 for a one-way ticket and $512 for a round-trip.

  • Do I need a passport to fly between Incheon and Ontario?

    Yes, you’ll need a passport to travel to Ontario from Incheon.

  • Which airports will I be using when flying from Incheon to Ontario?

    On your way to Ontario, you’ll fly out from Incheon Intl. You’ll be landing at Ontario.

  • Which aircraft models fly most regularly from Incheon to Ontario?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Incheon to Ontario?

    SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between Incheon and Ontario, with oneworld being the most commonly used for this route.

  • How does KAYAK find such low prices on flights from Incheon to Ontario?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Incheon to Ontario.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Incheon to Ontario?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from Incheon is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Incheon to Ontario?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ontario with an airline and back to Incheon with another airline. Booking your flights between Incheon and ONT can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Incheon to Ontario?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ontario from Incheon up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top airline flying from Incheon to Ontario

 
See real verified KAYAK customer reviews for airlines flying from Incheon to Ontario. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Incheon to Ontario? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 8696 reviews
7.7Boarding
6.6Food
7.3Comfort
7.1Entertainment
8.1Crew
Airline reviews

A bit rush for transit. Food and entertainment are not available

8.0 ExcellentAnonymous, Apr 2025ORD - SFO
Read more United Airlines reviews

A bit rush for transit. Food and entertainment are not available

Wonderful and fast TSA checkpoint. The line was fast and our gate was close by

The gate was too far away for the connecting flight

Generally good. The aisles have gotten narrower which can slow down boarding. Flight crew was great! Healthier complimentary snacks would be appreciated. Due to earthquake in San Francisco we had to circle in air space for a bit but then had a smooth landing. I laud the flight crew for their patience ;)

We tried to upgrade to economy premium but were told this was not possible as we had booked through United Airlines (and Air Canada was operating the flight). This seemed silly given there was ample space in economy premium. Additionally, we had to wait almost 1.5 hours upon arrival to taxi to the gate. Otherwise, the crew were very pleasant and passengers were friendly.

headphone jack didnt work for the first flight and not much variety

The agents was very rude and they charged me $50 for a carry-on bag saying that it was too big and then I saw someone going on a plane with the same size bag as me

For the most part united was a good experience, how ever when they came by with the snacks and water, they completely passed by my wife and I. As we were in separate rows. On a 5 hr flight we were not offered water

Fantastic crew. Flight was delayed at last minute but we were given updates every 20 minutes and the crew was so friendly and considerate. I miss the touch screens on the back of the seats, wish they would bring that back though.

Beijing PEK to SFO. I had an economy seat on this flight. The seat comfort was acceptable. My main complaint is with the FA’s lack of personality and absence from servicing the plane, specifically restroom care (I wish I could share a pic of the restroom that I captured) and care of travelers—drink cart/availability of drinks. I'm amazed at the level of service on other International travel where a passenger is most often appreciated.

Everything you need to know for your flight from Incheon to Ontario

Information on your arrival and departure airports

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