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Route

Fort Cavazos → Harlingen

GRKFort CavazosKilleen Regional Airport / Robert Gray Army Airfield
HRLHarlingenValley International Airport
Distance
334 mi
Estimated flight time
~1h 10m

Same local time in Fort Cavazos and Harlingen.

Observed nonstop

View the reverse route

How often does this route fly?

Frequency

Daily at most

On average around 1 flights a day, observed from October 2025 to September 2026.

1
flights per day
1
busiest month · Oct
3 hr 5 min
measured flight time
4 / 12
months seen

Through the year

Per day, month by month

  1. 1Jan2026
  2. –Feb
  3. 1Mar
  4. –Apr
  5. –May
  6. –Jun
  7. –Jul
  8. 1Aug
  9. –Sep
  10. 1Oct2025
  11. –Nov
  12. –Dec

In February 2026 we do not see this direction because of limited reception; the opposite direction is seen.

Airlines

Who flies it

Air Wisconsinnow and then
Key Lime Airnow and then

Through the day

Departure times

Local time in Fort Cavazos. Most departures between 13:00 and 16:00.

  1. 00:00
  2. 01:00
  3. 02:00
  4. 03:00
  5. 04:00
  6. 05:00
  7. 06:00
  8. 07:00
  9. 08:00
  10. 09:00
  11. 10:00
  12. 11:00
  13. 12:00
  14. 13:00
  15. 14:00
  16. 15:00
  17. 16:00
  18. 17:00
  19. 18:00
  20. 19:00
  21. 20:00
  22. 21:00
  23. 22:00
  24. 23:00

Through the week

By weekday

  1. 0Mon
  2. 0Tue
  3. 0Wed
  4. 0Thu
  5. 0.2Fri
  6. 0Sat
  7. 0.1Sun

Fleet

Aircraft observed

  1. Boeing 737-300B73331%
  2. Bombardier CRJ200CRJ231%
  3. Embraer ERJ 145E14519%
  4. E45X13%
All the numbers in a table
MonthPer daySeenAirlines
January 202615
  • Key Lime Air4×
February 2026We do not see this direction because of limited reception; the opposite direction is seen.
March 202616
  • Air Wisconsin2×
  • Key Lime Air1×
April 2026Not seen in this month.
May 2026Not seen in this month.
June 2026Not seen in this month.
July 2026Not seen in this month.
August 202613
  • Air Wisconsin3×
September 2026Not seen in this month.
October 202512–
    November 2025Not seen in this month.
    December 2025Not seen in this month.

    Airlines observed on this route

    From observed callsign routes on GRK-HRL - not a booking guarantee.

    Air Wisconsin

    ZW · AWI

    Hub: MKE Milwaukee

    32 departure airportsView airline →

    Key Lime Air

    KG · LYM

    Hub: DEN Denver

    49 departure airportsView airline →

    About this route

    • Domestic route: both airports are in the same country.
    • The opposite direction has also been observed as a direct connection.
    • Direct destinations observed from Fort Cavazos: 28.
    • Direct destinations observed from Harlingen: 20.

    The airports on this route

    Killeen Regional Airport / Robert Gray Army Airfield

    Fort Cavazos, United StatesGRK / KGRK

    Regional airport · 28 direct destinations · 1 runway · longest runway 9,997 ft

    62 °F · CloudySource: METAR observation via the NOAA Aviation Weather Center

    Airport pageAll direct destinations

    Valley International Airport

    Harlingen, United StatesHRL / KHRL

    Regional airport · 20 direct destinations · 3 runways · longest runway 9,400 ft

    83 °F · ClearSource: METAR observation via the NOAA Aviation Weather Center

    Airport pageAll direct destinations

    Alternative airports for this journey

    Same journey, a different airport nearby - with an observed direct connection.

    AUS HRLAustin Bergstrom International AirportAustin is about 61 mi from Fort Cavazos.View route →

    About the route from Fort Cavazos to Harlingen

    The observed direct connection between Killeen Regional Airport / Robert Gray Army Airfield (GRK) and Valley International Airport (HRL) covers approximately 334 mi. The estimated flight time is around 1h 10m. Air Wisconsin and Key Lime Air have been observed on this connection in the available route data.

    Frequently asked questions about this route

    How far is Fort Cavazos from Harlingen by air?
    The great-circle distance between Killeen Regional Airport / Robert Gray Army Airfield and Valley International Airport is approximately 334 mi.
    How long is the flight from Fort Cavazos to Harlingen?
    Based on the distance, the estimated flight time is about 1h 10m. This is an estimate, not a schedule.
    Is there a direct connection from Fort Cavazos to Harlingen?
    Yes, a direct connection between GRK and HRL has been observed in our route data.
    Which airlines have been observed on this route?
    In the available route data: Air Wisconsin and Key Lime Air.
    How often is there a flight from Fort Cavazos to Harlingen?
    On average around 1 flights a day, measured over twelve months (October 2025 to September 2026) in the flight archive, with 16 observed flights. Mainly Air Wisconsin, Key Lime Air. That is an observation, not a timetable.
    What is the current time difference between Fort Cavazos and Harlingen?
    Same local time in Fort Cavazos and Harlingen.

    Where this data comes from

    The route data comes from the flight archive (ADS-B, adsb.lol): which connections actually flew over the last twelve full months and who flew them, combined with our own airport, runway, and airline datasets. It is reference data about observed routes - not a current timetable and no claim about bookability.

    The frequency and aircraft on this page come from the flight archive (ADS-B, 12 months, October 2025 to September 2026), summarized per route per month. We do not see every flight, so it is a floor, not a count.

    Route data updated on October 11, 2026.