Route guide · 166 miles
Cheap Flights from Houston to Killeen
IAH → GRK · Nonstop 0h 50m · Live round-trip fares
If Killeen is next on your list, here's the honest picture on fares from Houston. The trip covers about 166 miles and takes roughly 0h 50m in the air. Prices on this route reward planners: booking 2–4 weeks ahead is the sweet spot, and the lowest fares tend to sell out fast.
Live fares for IAH → GRK are updating. Use the search below for real-time prices.
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Updated daily
Flight time
0h 50m
Nonstop, typical
Distance
166 mi
IAH → GRK
Book ahead
2–4 weeks
Best window, typically
Nonstop airlines
1
United Airlines
Nonstop flights from Houston to Killeen
Want to skip the layover? Nonstops from Houston to Killeen are flown by United Airlines, getting you there in about 0h 50m. For the lowest fares, book around 2–4 weeks before departure — last-minute nonstops on this route rarely come cheap.
Booking insights: Houston → Killeen
- Distance: 166 miles · nonstop flight time: 0h 50m.
- Rule of thumb for this route: the sweet spot is usually 2–4 weeks before departure.
- Midweek departures (Tue–Thu) are consistently cheaper than weekend flights.
- Set a free Airfare Deal alert instead of checking daily — the best fares can sell out in hours.
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Flying from Houston to Killeen: what you need to know
The flight
Houston to Killeen is a short hop — 166 miles, about 0h 50m gate to gate on a nonstop. You'll spend almost as long taxiing and boarding as you will in the air, so the real time-saver on this route is picking flight times that dodge rush hour at both ends.
Airlines on this route
United Airlines flies this route nonstop. That matters more than it sounds: the cheapest fare on one carrier is rarely the same product as the cheapest on another. Checked-bag fees, free seat selection and change rules all differ, so compare the full trip cost before you pick a winner. See our airline guides for exactly what each carrier charges — then send an enquiry and we'll confirm the all-in price for your dates.
Leaving from Houston (IAH)
Plan to be at the airport two hours before a domestic departure — ninety minutes can work at smaller airports outside peak times, but security lines are the one variable you can't control. If you're checking a bag, add time rather than cutting it close. Our Houston airport guide covers terminals, parking and ground transport so you can plan the trip to the airport, not just the flight.
Arriving in Killeen (GRK)
Before you land, know how you're getting from the airport to where you're staying — it's the part of the trip people forget to plan. The Killeen airport guide lays out your ground options, from transit and shuttles to rideshares and rental cars. Flying back the other way? Check Killeen to Houston fares — prices on the return direction often move on a different rhythm.
When to book
For a trip of 166 miles, booking 2–4 weeks ahead typically lands you in the sweet spot. Leave it to the final two weeks and prices usually climb as the cheapest seats sell out. If your dates are flexible, midweek departures are where the lower fares hide on most domestic routes.
Good to know before you go
- If you're traveling with only a carry-on, you can skip the bag-drop line entirely with mobile check-in.
- Download the airline's app before you fly; gate changes and delays show up there first.
- Nonstop time on this route is about 0h 50m — a one-stop itinerary needs to be a lot cheaper to be worth the extra hours.
- Tuesday and Wednesday departures are typically the cheapest days on domestic routes.
- Screenshot your fare before you enquire — prices move, and a saved fare helps our team match or beat it.
Houston to Killeen flight FAQs
How long is the flight from IAH to GRK?
A nonstop from IAH to GRK clocks in at around 0h 50m for the 166-mile trip. If you're connecting, budget an extra 2–4 hours depending on where you stop.
Are there nonstop flights from Houston to Killeen?
Yes — look for United Airlines on this route. Nonstop seats are usually priced best 2–4 weeks before departure.
What is the cheapest month to fly from Houston to Killeen?
Fares from Houston to Killeen tend to ease outside the peak summer and holiday rush — the late-summer and early-fall shoulder weeks are usually kinder on the wallet. Set a free Airfare Deal alert and we'll flag the dips for your dates.
How much are last minute flights from IAH to GRK?
Last-minute flights from IAH to GRK (booked within 7 days of departure) typically cost noticeably more than fares booked 2–4 weeks out. Booking early is the smarter move.
What is a good round-trip deal from Houston to Killeen?
A good deal is anything at or below the recent fares shown above. Set a free Airfare Deal alert and we'll ping you the moment fares drop.
Which airlines fly from Houston to Killeen?
The main carriers on this route are United Airlines. Comparing all of them on the live search below usually surfaces the lowest fare for your dates.
How early should I get to Houston airport for this flight?
Plan on two hours before departure for a domestic flight — ninety minutes can work at smaller airports outside peak times. If you're checking a bag, earlier is better; the bag-drop line, not the flight, is what runs late.
Do the cheapest fares on this route include a checked bag?
Usually not. Basic economy fares on most airlines include a carry-on but charge extra for checked bags, and seat selection can cost more too. Add up the real total before comparing — a slightly higher regular fare sometimes works out cheaper. Our team confirms the full breakdown with you before you pay.
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