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GRK to SOF: distance & flight time
Killeen (Robert Gray Army Air Field Airport) → Sofia (Sofia Airport)
6,126 mi
9,858 km · 5,323 nm
12h 29m
estimated nonstop flight time
+8h
time difference · heading northeast
See live GRK→SOF fares Phone-only fares on this route — call free
Flight time details
6,126 miles nonstop takes roughly 12h 29m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 8-hour time gain when reading arrival times on your ticket.
The two airports
- GRK — Robert Gray Army Air Field Airport · Killeen, United States
- SOF — Sofia Airport · Sofia, Bulgaria
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near GRK
- HLR · Hood Army Air Field8 mi away
- AUS · Austin Bergstrom International Airport61 mi away
- TPL · Draughon Miller Central Texas Regional Airport26 mi away
- ACT · Waco Regional Airport52 mi away
Near SOF
- PDV · Plovdiv International Airport85 mi away
- INI · Nis Airport90 mi away
- SKP · Skopje Alexander the Great Airport105 mi away
- CRA · Craiova Airport115 mi away
Frequently asked questions
How far is GRK from SOF?
The flight distance from Killeen (GRK) to Sofia (SOF) is 6,126 miles (9,858 km, 5,323 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GRK to SOF?
A nonstop flight takes about 12h 29m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
Are there nonstop flights from GRK to SOF?
Nonstop service on GRK–SOF depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 12h 29m nonstop estimate.
What is the time difference between Killeen and Sofia?
Sofia is 8 hours ahead of Killeen.
What is the cheapest way to fly from GRK to SOF?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GRK–SOF that never appear on search engines, with no booking fees.
Why are some GRK to SOF fares phone-only?
Consolidator contracts let us sell certain GRK–SOF tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.