Need help booking?
Unpublished phone-only deals available
RND to DUC: distance & flight time
San Antonio (Randolph Air Force Base) → Duncan (Halliburton Field)
342 mi
550 km · 297 nm
1h 22m
estimated nonstop flight time
Same time
time difference · heading north
See live RND→DUC fares Phone-only fares on this route — call free
Flight time details
342 miles nonstop takes roughly 1h 22m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Both airports share the same local time, so schedules read exactly as flown.
The two airports
- RND — Randolph Air Force Base · San Antonio, United States
- DUC — Halliburton Field · Duncan, United States
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 RND
- SAT · San Antonio International Airport11 mi away
- SSF · Stinson Municipal Airport18 mi away
- AUS · Austin Bergstrom International Airport59 mi away
- SKF · Lackland Air Force Base21 mi away
Near DUC
Frequently asked questions
How far is RND from DUC?
The flight distance from San Antonio (RND) to Duncan (DUC) is 342 miles (550 km, 297 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from RND to DUC?
A nonstop flight takes about 1h 22m 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 RND to DUC?
Nonstop service on RND–DUC 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 1h 22m nonstop estimate.
What is the cheapest way to fly from RND to DUC?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on RND–DUC that never appear on search engines, with no booking fees.
Why are some RND to DUC fares phone-only?
Consolidator contracts let us sell certain RND–DUC 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.