The cheapest times to fly from GUM to GRK are

  • January 22nd to May 20th
  • October 15th to November 25th

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 GUM to GRK is early February. Prices can be as high as $6135 for Saturday flights during mid December, or as low as $1535 for Tuesday flights around early February.


When to Fly to Killeen

Flying from Guam, GU (GUM) to Killeen, TX (GRK) will usually cost between $1535 to $1846 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early February with an average ticket price of $1574. Due to high demand the most expensive time to fly is mid December, with an average price of $2409. Planning your trip to low-cost times can easily save you $834 on economy flights and even more on first-class flights. Generally, any price below $1639 can be considered a good price for a round-trip GUM to GRK flight.

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

GUM to GRK Flight Prices

Compared to other flights, the GUM to GRK flight is more expensive than the average and costs about as much as the average flight leaving from Guam. The average price per mile (for a direct flight) is $0.14, which is far below average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to fly to GRK, and Monday the cheapest day to fly back into GUM. Saturdays 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 $130 (6%) 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 $1605. Return trip prices are from the GRK to GUM 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 GUM 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 14 hour 4 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 GUM to GRK while comparing.

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

  • 61 miles (98 km) away from GRK
  • Usually 0.12% less expensive than GRK
  • 2-layover flights available

See GUM to AUS flights

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

  • 113 miles (182 km) away from GRK
  • Usually 0.12% less expensive than GRK
  • 2-layover flights available

See GUM to SAT flights


Flight Hacking GUM to GRK

Flight hacking is when you book two tickets instead of a layover, sometimes with different airlines. You will need to either bring only a carry-on bag (highly recommended) or leave yourself plenty of time to go through security again. Flight hacking is completely allowed, but airlines don’t always tell you the cheapest way to get from GUM to GRK — but Champion Traveler does!

Hack #1: Seoul (GUM > ICN > GRK)

  • Price for both tickets: $1530
  • Average savings: $109 (6.65%)

See GUM to ICN flights

Hack #2: Hong Kong (GUM > HKG > GRK)

  • Price for both tickets: $1628
  • Average savings: $12 (0.7%)

See GUM to HKG flights


Flight Questions Answered

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

Which airlines fly this route?

You can find 4 major airlines flying this route most often: American, ANA, JAL, United, and potentially more during busy seasons.

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

The distance between the two airports is roughly 7269 miles or 11698 kilometers.

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

The real-world flight time for a nonstop GUM to GRK flight is about 14 hour 4 minutes.

How many flights go between Guam, GU and Killeen, TX?

It depends on the day of the week and the date, but a typical day might have around 11 available flights from GUM to GRK.


Airport Location Info


Departing Airport

Origination code GUM
Origination airport name Guam International Airport
City Guam, GU
Country the United States
Latitude 13.5
Longitude 144.8

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.