Drive or Fly: Mercedes, 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 HRL–GRK. At 384 miles, driving is the only practical option.

Passengers:

Vehicle:

Find Your Vehicle (EPA fuel economy data)

Drive

Door to Door

7h 12m

Distance

384.4 mi

Total Cost

$120

CO2

155 kg

Cost Breakdown

Diesel$85

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

3h 17m

41m in the air

Air Distance

343 mi

Total Cost

$189

CO2

88 kg

Door-to-Door Timeline

Mercedes, TX → HRL 26m

Check-in & Security 90m

Flight 41m

Arrival & Baggage 30m

GRK → Killeen, TX 10m

Cost Breakdown

Ticket (1 pax @ $134) $134

Rental car (1 day)$55

Airports

Mercedes, TX HRL — Valley International Airport 17 mi, ~26m drive

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

No scheduled flights found

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

+ Saves about 3h 55m compared to driving

+ Less physical fatigue

+ Predictable arrival time

− Airport security and check-in overhead

− No scheduled commercial flights found for this route

− May need a rental car at destination

− Luggage fees and restrictions

− Less flexibility for stops along the way

At a Glance

	Drive	Fly
Door-to-door time	7h 12m	3h 17m
Total cost (1 person)	$120	$189
Carbon footprint	155 kg CO₂	88 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

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

384.4 mi 7h 11m

via I 69C; US 281, US 281, TX 130 Toll

Alternative (+20 min)

399.5 mi 7h 32m

via US 281, I 69C; US 281, US 190

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