The cheapest times to fly from HHH to GRK are

  • May 28th to August 5th (except the weeks of June 4th, June 25th, and July 16th)
  • November 5th to November 18th
  • December 3rd to February 25th (except the week of December 24th)

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 HHH to GRK is late January. Prices can be as high as $834 for Sunday flights during late November to early December, or as low as $274 for Tuesday flights around late January.


When to Fly to Killeen

Flying from Hilton Head, SC (HHH) to Killeen, TX (GRK) will usually cost between $324 to $685 per person if booking more than four weeks in advance. On average the very cheapest time to fly is late January with an average ticket price of $281. Due to high demand the most expensive time to fly is late November to early December, with an average price of $616. Planning your trip to low-cost times can easily save you $335 on economy flights and even more on first-class flights. Generally, any price below $449 can be considered a good price for a round-trip HHH to GRK flight.

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

HHH to GRK Flight Prices

Compared to other flights, the HHH to GRK flight is much cheaper than the average and costs less than the average flight leaving from Hilton Head Island. The average price per mile (for a direct flight) is $0.28, which is below average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to depart and return on this flight. Sundays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $221 (36%) 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 $379. Return trip prices are from the GRK to HHH 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 HHH to GRK can generally find a 2-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 2 hour 48 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 HHH to GRK while comparing.

Destination alternative #1: Austin – Bergstrom International Airport (AUS) in Austin, TX

  • 61 miles (98 km) away from GRK
  • Usually 32.96% less expensive than GRK
  • 1-layover flights available

See HHH to AUS flights

Destination alternative #2: San Antonio International Airport (SAT) in San Antonio, TX

  • 113 miles (182 km) away from GRK
  • Usually 28.17% less expensive than GRK
  • 1-layover flights available

See HHH to SAT flights

Destination alternative #3: Dallas/Fort Worth International Airport (DFW) in Dallas/Fort Worth, TX

  • 135 miles (217 km) away from GRK
  • Usually 27.39% less expensive than GRK
  • 1-layover flights available

See HHH to DFW flights


Flight Questions Answered

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

Which airlines fly this route?

You can find 3 major airlines flying this route most often: American, Delta, United, and potentially more during busy seasons.

How far away is it from Robert Gray AAF Airport to Hilton Head Airport?

The distance between the two airports is roughly 1010 miles or 1625 kilometers.

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

The real-world flight time for a nonstop HHH to GRK flight is about 2 hour 48 minutes.

How many flights go between Hilton Head, SC and Killeen, TX?

It depends on the day of the week and the date, but a typical day might have around 20 available flights from HHH to GRK.


Airport Location Info


Departing Airport

Origination code HHH
Origination airport name Hilton Head Airport
City Hilton Head, SC
Country the United States
Latitude 32.2
Longitude -80.7

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.