GRK - ONT

$228 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 10/11. 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

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 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
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Killeen to Ontario (GRK-ONT)

 
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

Thu, Nov 13 - Thu, Nov 20
American Airlines Logo
6:49 pm - 11:57 pmGRK-ONT
7h 08m1 stop
American Airlines Logo
12:49 pm - 9:07 pmONT-GRK
6h 18m1 stop
$419American Airlines
Find Deal
Thu, Nov 13 - Thu, Nov 20
American Airlines Logo
5:05 am - 12:03 pmGRK-ONT
8h 58m2 stops
American Airlines Logo
12:49 pm - 9:07 pmONT-GRK
6h 18m1 stop
$424American Airlines
Find Deal
Thu, Nov 13 - Thu, Nov 20
American Airlines Logo
5:05 am - 12:03 pmGRK-ONT
8h 58m2 stops
American Airlines Logo
12:55 pm - 11:43 pmONT-GRK
8h 48m2 stops
$537American Airlines
Find Deal
Booking Insights

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.

Good to know

Cheapest flight$228
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 $228 for a one-way ticket and $419 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.

Reviews of the 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
8.0Crew
6.5Food
7.2Comfort
6.9Entertainment
7.5Boarding
Airline reviews

Did not get the seat I selected and paid for.

2.0 MediocreYordanos, Aug 2025PHL - LAX
Read more American Airlines reviews

Did not get the seat I selected and paid for.

My flight was delayed for several hours. Sitting at gate 16 for several hours, I got a text from Kayak the gate changed to 9 before it was announced. Very bad communication at each gate from American Airlines employees. I received 10 notifications of delay from Kayak. My vacation started off horrible! I will write to American Airlines corporate office also.

Delayed flight that lead to a missed connection and a 5-hour trip became a 12-hour flight 🙄

There is no room, no gluten free options, or any free internet/entertainment. You have to bring your own tablet or smartphone because there are no screens.

Amazing food, great staff, with one noticable detail missing ...but no seat entertainment in any of aircraft ...I am not a fan

Boarding gate in Honolulu was staffed with a great clerk with a soothing voice despite the flight delay of over an hour. Flight attendants in the plane were all grumpy, not pleasant looking bunch. Their sour attitude showed throughout the flight. Inly able to get a select few movies started. Most of the movie links in the “free entertainment” did not work.

This was a horrible experience. For a first class experience, my chair was held together by 3M tape - and I have a photo. The crew weren’t very attentive, somewhat dismissive and forgot my drink and snack, the chair reclined about 3 inches on a 6-hour cross country flight. I was also not informed that there was no lounge available in Newark airport because of renovations, so all around this was one of the worst experiences and I would actively avoid both American and Alaska Air going forward.

Boarding was very efficient. Everyone got on board and we got on our way very quickly. It was frustrating that the entertainment app was not functioning properly. I was not able to activate some of the movies offered. The crew on this flight appears to be pretty grumpy. They had no smile on their faces. I felt like they were doing us a favor for being there.

Loved the staff, boarding and drink options! Wish the comfort of the seat could have been better nevertheless

Honestly, I haven’t flown American in years, probably due to the pandemic and my being unable to travel for certain periods in the last two years, but it was a good experience to dig out or obtain a new American Airlines account after many years of traveling for business with American in the past.

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

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.