$334 Find Cheap Flights from Asia 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 to Ontario departing on 12/8. 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
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$506
United Airlines
Mon 12/15Thu 12/18
ICN - ONT • 1 stop
Cheapest non-stop
$726
Typical prices: $863-$957
China Airlines
Mon 2/23Mon 3/9
TPE - ONT • Non-stop
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Flight Deals
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Flight Deals

Cheap Flights from Asia to Ontario

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Asia 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.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Asia to Ontario

Mon, Dec 15 - Thu, Dec 18
United Airlines Logo
12:45 pm - 10:49 pmICN-ONT
27h 04m1 stop
United Airlines Logo
6:00 am - 4:15 pmONT-ICN
17h 15m1 stop
$506United Airlines
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Mon, Feb 23 - Fri, Mar 13
United Airlines Logo
6:00 pm - 7:54 pmICN-ONT
18h 54m1 stop
United Airlines Logo
6:00 am - 3:15 pmONT-ICN
17h 15m1 stop
$508United Airlines
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Fri, Mar 13 - Mon, Apr 13
STARLUX Airlines Logo
11:50 am - 4:50 pmMNL-ONT
20h 00m1 stop
STARLUX Airlines Logo
11:10 pm - 9:50 amONT-MNL
19h 40m1 stop
$550STARLUX Airlines
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Mon, Feb 9 - Mon, Feb 16
STARLUX Airlines Logo
11:50 am - 3:50 pmMNL-ONT
20h 00m1 stop
STARLUX Airlines Logo
9:45 pm - 11:05 amONT-MNL
21h 20m1 stop
$558STARLUX Airlines
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Thu, Jan 29 - Fri, Feb 6
Alaska Airlines Logo
8:35 pm - 11:56 pmICN-ONT
20h 21m1 stop
Alaska Airlines Logo
6:00 am - 6:35 pmONT-ICN
19h 35m1 stop
$571Alaska Airlines
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Thu, Jan 29 - Sat, Feb 7
Alaska Airlines Logo
8:35 pm - 11:56 pmICN-ONT
20h 21m1 stop
Alaska Airlines Logo
4:03 pm - 6:35 pmONT-ICN
33h 32m1 stop
$586Alaska Airlines
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Thu, Apr 2 - Sat, Apr 11
Delta Logo
7:20 pm - 10:38 pmICN-ONT
19h 18m1 stop
Delta Logo
1:00 pm - 3:20 pmONT-ICN
34h 20m1 stop
$616Delta
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Wed, Dec 24 - Tue, Dec 30
Delta Logo
4:50 pm - 5:08 pmHND-ONT
17h 18m1 stop
Delta Logo
6:00 am - 2:05 pmONT-HND
39h 05m2 stops
$646Delta
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Thu, Dec 11 - Fri, Jan 30
China Airlines Logo
3:35 am - 4:50 pmMNL-ONT
29h 15m1 stop
China Airlines Logo
10:50 pm - 9:55 amONT-MNL
19h 05m1 stop
$664China Airlines
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Thu, Feb 5 - Sun, Mar 29
China Airlines Logo
3:35 am - 4:50 pmMNL-ONT
29h 15m1 stop
China Airlines Logo
12:10 am - 9:35 amONT-MNL
18h 25m1 stop
$665China Airlines
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Good to know

Low seasonOctober
Cheapest flight$334
Best time to beat the crowds with an average 13% drop in price.
Most popular time to fly with an average 1% increase in price.
Flight from Incheon to Ontario

FAQs for booking flights from Asia to Ontario

  • How does KAYAK find such low prices on flights from Asia 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 Asia to Ontario.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from Asia 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 Asia 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 Asia with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Asia 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 Asia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from Asia to Ontario

 
Need help choosing which airline to fly with from Asia 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.
8.9
STARLUX AirlinesOverall score based on 227 reviews
8.9Comfort
8.8Entertainment
8.7Food
8.9Boarding
9.2Crew
Airline reviews

Loved the boarding process. All airlines should board from the back to the front. Very efficient. Food was excellent, crew were great, seats were spacious and comfortable and the entertainment screen was the best I have seen.

10.0 ExcellentBrian, Oct 2025SIN - TPE
Read more STARLUX Airlines reviews

Loved the boarding process. All airlines should board from the back to the front. Very efficient. Food was excellent, crew were great, seats were spacious and comfortable and the entertainment screen was the best I have seen.

Flight cancelled due to inclement weather yet rival airline EVA Air with the same route departed 2 hours later and landed safely while our flight was cancelled and rescheduled for 36 hours later.

The staff in air and on land went above and beyond! I would definately recommend and we will fly Starlux again!

I need Starlux to respond to my complaint and issues for my flight.

Someon vomit during boarding. My seat was next to the vomit. I asked crew member to switch seat, but they said it was a full flight. I had my baby with me. My baby got sick after the flight. He was in the hospital for 2 days.

The airplane so clean and they have a nice crew

it they come out with resent movie and good food

The crew could have been kinder and less pushy. The premium economy seats don't have enough cushion. The seats are to hard and the flight became painful and uncomfortable after an hour of flying.

Aircraft is new and toilets are spacious, but toilets are quite filthy. They should clean more often. They have a long list of drink offer but are actually not available during meal. They said they’ll come back with them and you don’t get them until after dinner which means you eat your meals without any drinks if you were to get something that they don’t have on the cart. They are strict about removing headphones during take off and landing which is new to us since the movies did not get turned off. Instead, we we’re forced to watch their commercials during that time. We probably would fly with them again but not with the cost we spent. For the record, I work in tourism and travel a lot for inspections.

Our transit in Taipei was disappointing. The ground crew could not tell us where the lounge was located, so we wasted 15 minutes trying to find it. The airline has a great review, but our experience says otherwise.

Hour late but understandable under the conditions. Taoyuan airport could have clearer signs language wise and more staff to help direct people.

Delayed. Not a full flight and whole rows left open with the paid seating. Food was ok. My beef meal only had one cube of beef the rest carrot cubes. Entertainment on personal device but didn’t know about it until the flight was almost done.

The flight was uneventful and the crew was kind and professional. Really appreciate the option to order a vegan meal for the flight!

I love my Delta crew, they were so welcoming and helpful.

I absolutely loved my flight from Taipei to LAX. I was originally assigned to a different seat, however one of the stewardess noticed I was uncomfortable in my seat. She offered to move me to a more comfortable setting. Although she didn’t have to do what she did, I am more than grateful and thankful for her doing so. My longer flight felt much more comfortable, just by her taking notice. I really appreciate her.

Overall was a lovely experience. The crew were kind and courteous throughout the entire flight.

Sat next to a woman who had her period. Blood was on her seat and on the arm rest between us. I ended up having period blood on my jacket and shoes. Very gross!

They need to improve on how the plane lands cause it was not smooth at all.

Been flying with China Airline over years many times. Good experience with them, no issues.

China Airlines crews are very excellent doing their job. Very friendly and hardworking. I will always choose China Airlines over and over. Thank you all for making my flight comfortable. God bless to all the staff. :)

United needs to step up their game. Delayed flight leaving Seattle, San Francisco. Older aircraft, not very comfortable.

The flight attendants were very rude, beyond comprehension. I took a business class from London to SFO for the first time on United. When I asked for a second piece of bread during dinner, the serving attendant threw a 3rd bread on my plate and said, “here. You can have this one too”! I couldn’t believe the rudeness of the attendant. Most all attendants were very rude, unhelpful, sing the food was absolutely disgusting. Never fly United internationally in business class. My flight back to SFO was a nightmare!!

Plane boarded early a quickly, was mostly full. We left close to on time. And landed early.

7 hours delayed due to operational issues on United’s end. Basically laziness.

Flight from Rome to SFO was excellent compared To our flight to Europe from SFO. The food was much tastier. You can see how UNITED is skimping, though. Instead of getting something mid flight you had to ask for it. It was not automatically served. There was a cookie at the end of the arrival meal, for example that tasted like it just came out of a box. They used to serve a little container of nuts, now … a tiny container of nuts, mixed with pretzels. This was business class that you really have to pay for! But this is minor complaints compared to the overall. My major complaint is the position of the even numbered seats by the windows. You have to turn around to see your window & the positioning as some other controls are harder to get at. This is compared to the odd number seat that are perfectly aligned.

The food quality sucks. One must starve if they do not eat flesh Or wheat based products Some variety would be expected. The trivial amount of snacks and or food is inhumane

Flight was timely, relatively comfortable, with decent entertainment and food served. Only problem encountered was with the free messaging which I highly appreciate, but it did not work from iphone to non-iphones.

The internet service I paid for didn’t work at all and the flight crew was not very friendly.

Subject: Formal Complaint: Discriminatory and Unprofessional Conduct – Request for Immediate Action & Compensation Dear [Airline Customer Relations Team], I am writing to file a formal complaint regarding my recent travel experience with [Airline], which was by far the worst I have ever encountered. What occurred was not only unprofessional, but in several instances discriminatory, unsafe, and unacceptable. On the first leg of my trip, I arrived only four minutes past check-in. Instead of making any attempt to resolve the matter, your representative flatly denied me boarding and made me wait while she attended to passengers who arrived after me. By the time a manager intervened, it was too late to board, costing me time, money, and unnecessary frustration. The second leg of my trip (Chicago–San Francisco) raised even more serious concerns. From the outset, it was apparent that the staff—particularly two attendants—prioritized Caucasian passengers while dismissing African American and minority passengers. • When a Caucasian passenger in the exit row refused to comply with federal safety requirements, I, as a first responder, immediately offered to switch seats and assume the responsibility. My offer was blatantly ignored, and instead, a Caucasian passenger seated further up was chosen. This was discriminatory and deeply insulting, especially as I was actively de-escalating the situation that could have delayed the flight further. • During a lengthy tarmac delay of over 90 minutes, passengers were given conflicting and unreasonable instructions that created unnecessary distress and tension. • Throughout the flight, a visibly intoxicated passenger directly in front of me was disruptive, rude to others, failed to comply with seatbelt and electronic device rules, and yet faced no enforcement from the crew. In stark contrast, I was singled out for repeated compliance checks even though I was following every rule. This unequal treatment was so obvious that multiple passengers around me spoke up in my defense. This pattern of behavior demonstrated a clear lack of professionalism, disregard for passenger safety, and discriminatory treatment. I expect far better from an airline of your stature. As a paying customer subjected to this unacceptable treatment, I am formally requesting: 1. A full investigation into the conduct of the staff on both flights. 2. A written apology acknowledging the discriminatory and unprofessional behavior I endured. 3. Appropriate compensation for the distress, inconvenience, and mishandling of my travel. If this matter is not addressed promptly and thoroughly, I will have no choice but to escalate my complaint further, including filing with the U.S. Department of Transportation and sharing my experience through other channels. I trust [Airline] will take this complaint seriously and provide a timely resolution.

Check in was quick and easy during early hours. Flight was on time, and customer services was a plus.

Everything you need to know for your flight to Ontario

Information on the airport you'll fly into in Ontario