Drive or Fly: Plano, TX to Karnes City, 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 DAL–SAT. At 316 miles, driving is the only practical option.

Passengers:

Vehicle:

Find Your Vehicle (EPA fuel economy data)

Drive

Door to Door

5h 38m

Distance

316.9 mi

Total Cost

$105

CO2

128 kg

Cost Breakdown

Diesel$70

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

4h 22m

35m in the air

Air Distance

294 mi

Total Cost

$187

CO2

75 kg

Door-to-Door Timeline

Plano, TX → DAL 22m

Check-in & Security 90m

Flight 35m

Arrival & Baggage 30m

SAT → Karnes City, TX 85m

Cost Breakdown

Ticket (1 pax @ $132) $132

Rental car (1 day)$55

Airports

Plano, TX DAL — Dallas Love Field 15 mi, ~22m drive

Karnes City, TX SAT — San Antonio International Airport 56 mi, ~85m drive

No scheduled flights found

No commercial flights between DAL and SAT. 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

− May need a rental car at destination

− Luggage fees and restrictions

− Less flexibility for stops along the way

Train

Amtrak

Door to Door

12h 31m

10h 8m on rail

Total Cost

$50

CO2

15 kg

Route

Texas Eagle

Door-to-Door Timeline

Plano, TX → Dallas 27m

Boarding 30m

Train ride 608m

Arrival 10m

San Antonio Amtrak Station → Karnes City, TX 76m

Cost Breakdown

Ticket (1 pax @ $50) $50

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

Stations

From Dallas 18 mi, ~27m drive

To San Antonio Amtrak Station 51 mi, ~76m drive

Service

Direct

Frequency

~6/week

+ Spacious seating with legroom and power outlets

+ Walk around freely during the trip

+ No driving fatigue — relax or work en route

+ Much lower carbon footprint than driving or flying

− Limited schedule — about 6 trips per week

− Amtrak delays can be unpredictable

− Need transportation to/from station

− Less flexibility than driving

At a Glance

	Drive	Fly	Train
Door-to-door time	5h 38m	4h 22m	12h 31m
Total cost (1 person)	$105	$187	$50
Carbon footprint	128 kg CO₂	75 kg CO₂	15 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: Amtrak 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.

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