The cheapest times to fly from TUL to GRK are

  • April 9th to May 13th
  • May 28th to August 5th
  • October 8th to March 11th

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from TUL to GRK is early December. Prices can be as high as $651 for Friday flights during early to mid March, or as low as $281 for Tuesday flights around early December.


When to Fly to Killeen

Flying from Tulsa, OK (TUL) to Killeen, TX (GRK) will usually cost between $281 to $403 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early December with an average ticket price of $308. Due to high demand the most expensive time to fly is early to mid March, with an average price of $449. Planning your trip to low-cost times can easily save you $141 on economy flights and even more on first-class flights. Generally, any price below $374 can be considered a good price for a round-trip TUL to GRK flight.

See below for a graph of average weekly prices for the TUL to GRK route. All prices are for round-trip tickets in USD.

TUL to GRK Flight Prices

Compared to other flights, the TUL to GRK flight is much cheaper than the average and costs much less than the average flight leaving from Tulsa. The average price per mile (for a direct flight) is $0.62, which is above average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to depart and return on this flight. Fridays are the most expensive days to fly to Killeen, and Sundays are the most expensive days to return to Tulsa. Selecting flights on the least expensive days could save you up to $55 (14%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $332. Return trip prices are from the GRK to TUL flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from TUL to GRK can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 1 hour 39 minutes may not be realistic.


Alternative Nearby Airports

Champion Traveler tells you which airports are nearby and whether tickets might be cheaper alternative airports nearby. Sometimes it’s worth it to fly into a closer airport and then commute to your destination. Remember that there is not usually a nonstop flight from TUL to GRK while comparing.

Destination alternative #1: Dallas/Fort Worth International Airport (DFW) in Dallas/Fort Worth, TX

  • 135 miles (217 km) away from GRK
  • Usually 51.47% less expensive than GRK
  • Nonstop flights available

See TUL to DFW flights

Destination alternative #2: Easterwood Field Airport (CLL) in College Station/Bryan, TX

  • 93 miles (150 km) away from GRK
  • Usually 6.28% less expensive than GRK
  • 1-layover flights available

See TUL to CLL flights

Destination alternative #3: Austin – Bergstrom International Airport (AUS) in Austin, TX

  • 61 miles (98 km) away from GRK
  • Usually 4.28% less expensive than GRK
  • 1-layover flights available

See TUL to AUS flights


Flight Questions Answered

Still have questions about flying from TUL to GRK? We’ve got answers.

Which airlines fly this route?

You can find 2 major airlines flying this route most often: American, United, and potentially more during busy seasons.

How far away is it from Robert Gray AAF Airport to Tulsa International Airport?

The distance between the two airports is roughly 372 miles or 599 kilometers.

How long does it take to fly from TUL to GRK?

The real-world flight time for a nonstop TUL to GRK flight is about 1 hour 39 minutes.

How many flights go between Tulsa, OK and Killeen, TX?

It depends on the day of the week and the date, but a typical day might have around 17 available flights from TUL to GRK.


Airport Location Info


Departing Airport

Origination code TUL
Origination airport name Tulsa International Airport
City Tulsa, OK
Country the United States
Latitude 36.2
Longitude -95.9

Return Airport

Destination code GRK
Destination airport name Robert Gray AAF Airport
City Killeen, TX
Country the United States
Latitude 31.1
Longitude -97.8


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.