GRK - ONT

$275 Find Cheap Flights from Killeen 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 Killeen to Ontario departing on 8/20. 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

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

Cheap Flights from Killeen to Ontario

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Killeen 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 Killeen to Ontario

Tue, Jun 24 - Fri, Jun 27
American Airlines Logo
7:54 pm - 11:59 pmGRK-ONT
6h 05m1 stop
American Airlines Logo
12:59 am - 9:59 amONT-GRK
7h 00m1 stop
$385American Airlines
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Tue, Jun 24 - Mon, Jun 30
American Airlines Logo
7:54 pm - 11:02 pmGRK-ONT
5h 08m1 stop
American Airlines Logo
12:59 am - 9:59 amONT-GRK
7h 00m1 stop
$401American Airlines
Find Deal
Tue, Jun 24 - Sat, Jun 28
American Airlines Logo
7:54 pm - 11:02 pmGRK-ONT
5h 08m1 stop
American Airlines Logo
2:40 pm - 11:26 pmONT-GRK
6h 46m1 stop
$420American Airlines
Find Deal
Fri, May 23 - Sat, May 31
American Airlines Logo
10:22 am - 1:52 pmGRK-ONT
5h 30m1 stop
American Airlines Logo
7:30 am - 5:02 pmONT-GRK
7h 32m1 stop
$439American Airlines
Find Deal
Sun, Jun 22 - Fri, Jun 27
American Airlines Logo
7:54 pm - 11:59 pmGRK-ONT
6h 05m1 stop
American Airlines Logo
12:59 am - 9:59 amONT-GRK
7h 00m1 stop
$442American Airlines
Find Deal
Fri, May 23 - Sat, May 31
American Airlines Logo
5:32 pm - 11:43 pmGRK-ONT
8h 11m1 stop
American Airlines Logo
6:01 am - 5:02 pmONT-GRK
9h 01m2 stops
$444American Airlines
Find Deal
Tue, Jun 24 - Wed, Jul 2
American Airlines Logo
7:54 pm - 11:02 pmGRK-ONT
5h 08m1 stop
American Airlines Logo
8:15 am - 3:59 pmONT-GRK
5h 44m1 stop
$448American Airlines
Find Deal
Fri, May 23 - Sat, May 31
American Airlines Logo
10:22 am - 3:49 pmGRK-ONT
7h 27m2 stops
American Airlines Logo
1:14 pm - 11:37 pmONT-GRK
8h 23m2 stops
$449American Airlines
Find Deal
Wed, May 21 - Sat, May 31
American Airlines Logo
6:20 am - 9:50 amGRK-ONT
5h 30m1 stop
American Airlines Logo
10:51 am - 8:13 pmONT-GRK
7h 22m1 stop
$455American Airlines
Find Deal
Sun, Jun 22 - Mon, Jun 30
American Airlines Logo
4:29 pm - 10:14 pmGRK-ONT
7h 45m1 stop
American Airlines Logo
12:59 am - 9:59 amONT-GRK
7h 00m1 stop
$458American Airlines
Find Deal
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KAYAK's insights & trends for Killeen to Ontario flights

Get data-powered insights and trends into flights from Killeen 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 Killeen to Ontario?

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

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

Find deals

Good to know

High seasonAugust
Cheapest flight$275
Most popular time to fly and prices are also 9% lower on average.
Flight from Killeen to Ontario

When to book flights from Killeen to Ontario

Are your dates flexible? Find out the best times to travel from Killeen 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 flights from Killeen to Ontario

  • What is the cheapest flight from Killeen to Ontario?

    In the last 3 days, the lowest price for a flight from Killeen to Ontario was $275 for a one-way ticket and $385 for a round-trip.

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

    No, a passport isn't needed to fly from Killeen to Ontario. However, local authorities might ask for an official ID.

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

    On your way to Ontario, you’ll fly out from Killeen Fort Hood Regional. You’ll be landing at Ontario.

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

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

  • Which airline alliances offer flights from Killeen to Ontario?

    oneworld is the only airline alliance operating flights between Killeen and Ontario.

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

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from Killeen 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 Killeen 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 Killeen with another airline. Booking your flights between Killeen 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 Killeen 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 Killeen up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top airline flying from Killeen to Ontario

 
See real verified KAYAK customer reviews for airlines flying from Killeen 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 Killeen 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.
7.2
American AirlinesOverall score based on 10000 reviews
7.2Comfort
8.0Crew
6.5Food
7.5Boarding
6.9Entertainment
Airline reviews

One bottle of water and a package of cookies for comfort plus. We had to literally beg a flight attendant for an extra bottle of water later in the flight due to feeling dehydrated.

6.0 GoodAnonymous, Mar 2025PHL - LAX
Read more American Airlines reviews

One bottle of water and a package of cookies for comfort plus. We had to literally beg a flight attendant for an extra bottle of water later in the flight due to feeling dehydrated.

Flight boarded from Gate 39 at OGG, the farthest gate in the terminal. There were no Hawaiian themed amenities for the flight. The first class service was mediocre at best; I received not special welcome or recognition as an executive platinum member of American Advantage program. The flight attendants were more concerned with their cell phones than saying "thank you" to the passengers as we disembarked. Fortunately, the flight arrived at LAX a few minutes early.

Bigger seats. Board back to front! Disembark front to back!

Extraordinary service in business class, and very good breakfast and snacks. A really lovely flight.

This flight didn’t happen because AA agents didn’t let us board the flight

Plane was pretty clean, staff was friendly and helpful, flight left about on time arrived early. Took a long time to board and get off the plane - carry on items didn't have enough room so people had to move all around to find places.

The service and food needs to improve to catch up with other international flights

Would have been good to have a meal since it was a 5.5 hour flight

We boarded after several delays due to mechanical failure and a gate change. The seat cushion in the exit row was very compressed and offered no cushion, making the four-hour journey reasonably uncomfortable. The WiFi worked for a few people, but for most, it did not, and you cannot get entertainment unless you can connect—American Airlines flights do not have seatback screens, and you must use your mobile phone.

AA is always pretty solid. Was on time all the way around today so can’t complain!

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

Information on your arrival and departure airports

Ontario (ONT)
Killeen (GRK)

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