Drive or Fly: San Antonio, TX to Killeen, TX?

Side-by-side comparison of driving versus flying for this route. Costs, time, and trade-offs at a glance.

Driving wins

Medium

No scheduled commercial flights found for SAT–GRK. At 145 miles, driving is the only practical option.

Passengers:

Vehicle:

Find Your Vehicle (EPA fuel economy data)

Drive

Door to Door

2h 46m

Distance

145.6 mi

Total Cost

$67

CO2

59 kg

Cost Breakdown

Diesel$32

Hotel (1 room, 0 nights) $0

Meals (1 pax, 1 day) $35

+ No luggage restrictions or TSA lines

+ Comfortable one-day drive

+ Stop anywhere along the route

+ Have your own car at the destination

+ Likely faster door-to-door than flying

− Wear and tear on vehicle

− Fuel price fluctuations

Plan the drive

Fly

Door to Door

2h 37m

15m in the air

Air Distance

126 mi

Total Cost

$125

CO2

32 kg

Door-to-Door Timeline

San Antonio, TX → SAT 12m

Check-in & Security 90m

Flight 15m

Arrival & Baggage 30m

GRK → Killeen, TX 10m

Cost Breakdown

Ticket (1 pax @ $125) $125

Airports

San Antonio, TX SAT — San Antonio International Airport 8 mi, ~12m drive

Killeen, TX GRK — Killeen Regional Airport / Robert Gray Army Airfield 7 mi, ~10m drive

No scheduled flights found

No commercial flights between SAT and GRK. Flight estimates above are theoretical.

+ Less physical fatigue

+ Predictable arrival time

− Airport security and check-in overhead

− No scheduled commercial flights found for this route

− Luggage fees and restrictions

− Less flexibility for stops along the way

Bus

FlixBus

Door to Door

5h 10m

3h 45m on road

Total Cost

$14

CO2

8 kg

Door-to-Door Timeline

San Antonio, TX → San Antonio Bus Station (SNT6) 30m

Boarding 15m

Bus ride 225m

Arrival 10m

Killeen (KLE6) → Killeen, TX 30m

Cost Breakdown

Ticket (1 pax @ $14) $14

Estimated based on distance. Check flixbus.com for current prices.

Stations

From SNT6 — San Antonio Bus Station 0 mi, ~30m drive

To KLE6 — Killeen 0 mi, ~30m drive

Service

Direct

Frequency

~7/week

+ Usually the cheapest option

+ Wi-Fi and power outlets on board

+ No driving fatigue — relax or work en route

+ Much lower carbon footprint than driving or flying

− Limited schedule — about 7 trips per week

− Travel time longer than driving

− Need transportation to/from station

− Less flexibility than driving

At a Glance

	Drive	Fly	Bus
Door-to-door time	2h 46m	2h 37m	5h 10m
Total cost (1 person)	$67	$125	$14
Carbon footprint	59 kg CO₂	32 kg CO₂	8 kg CO₂
Flexibility	High	Low
Luggage	Unlimited	Restricted
Reliability	Weather dependent	Data unavailable

Drive data: OSRM routing, EIA fuel prices

Flight data: Statistical estimate

Airports: OurAirports

Transit: FlixBus GTFS — fares estimated

Confidence: Medium — airports identified, fares estimated

Costs are estimates. Actual flight prices vary by airline, date, and booking time. Drive costs based on OSRM routing, EIA fuel prices. Computed Apr 17, 2026.

Route Options

2 different routes between these cities.

Fastest

145.6 mi 2h 45m

via I 35, TX 195, I 35; US 290

Alternative (+0 min)

162.1 mi 2h 46m

via TX 130 Toll, TX 195, I 10; US 90

Decided to drive? See the full trip plan from San Antonio, TX to Killeen, TX with stops, fuel costs, and turn-by-turn directions.