The cheapest times to fly from SBP to GRK are

  • April 2nd to April 29th
  • July 2nd to July 15th
  • September 3rd to October 7th
  • October 22nd to November 18th

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 SBP to GRK is mid January. Prices can be as high as $1083 for Sunday flights during early to mid May, or as low as $373 for Tuesday flights around mid January.


When to Fly to Killeen

Flying from San Luis Obispo, CA (SBP) to Killeen, TX (GRK) will usually cost between $393 to $611 per person if booking more than four weeks in advance. On average the very cheapest time to fly is mid January with an average ticket price of $429. Due to high demand the most expensive time to fly is early to mid May, with an average price of $661. Planning your trip to low-cost times can easily save you $232 on economy flights and even more on first-class flights. Generally, any price below $521 can be considered a good price for a round-trip SBP to GRK flight.

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

SBP to GRK Flight Prices

Compared to other flights, the SBP to GRK flight is cheaper than the average and costs less than the average flight leaving from San Luis Obispo. The average price per mile (for a direct flight) is $0.24, which is below average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to fly to GRK, and Wednesday the cheapest day to fly back into SBP. 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 $121 (21%) 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 $447. Return trip prices are from the GRK to SBP 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 SBP 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 3 hour 24 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 SBP 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 44.00% less expensive than GRK
  • Nonstop flights available

See SBP to DFW flights

Destination alternative #2: Austin – Bergstrom International Airport (AUS) in Austin, TX

  • 61 miles (98 km) away from GRK
  • Usually 24.30% less expensive than GRK
  • 1-layover flights available

See SBP to AUS flights

Destination alternative #3: San Antonio International Airport (SAT) in San Antonio, TX

  • 113 miles (182 km) away from GRK
  • Usually 24.30% less expensive than GRK
  • 1-layover flights available

See SBP to SAT flights


Flight Questions Answered

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

Which airlines fly this route?

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

How far away is it from Robert Gray AAF Airport to San Luis County Regional Airport?

The distance between the two airports is roughly 1347 miles or 2168 kilometers.

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

The real-world flight time for a nonstop SBP to GRK flight is about 3 hour 24 minutes.

How many flights go between San Luis Obispo, CA and Killeen, TX?

It depends on the day of the week and the date, but a typical day might have around 18 available flights from SBP to GRK.


Airport Location Info


Departing Airport

Origination code SBP
Origination airport name San Luis County Regional Airport
City San Luis Obispo, CA
Country the United States
Latitude 35.2
Longitude -120.6

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.