Drive or Fly: San Marcos, TX to Montopolis, 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 AUS–AUS. At 34 miles, driving is the only practical option.

Passengers:

Vehicle:

Find Your Vehicle (EPA fuel economy data)

Drive

Door to Door

36m

Distance

34 mi

Total Cost

$43

CO2

14 kg

Cost Breakdown

Diesel$8

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 54m

3m in the air

Air Distance

29 mi

Total Cost

$121

CO2

7 kg

Door-to-Door Timeline

San Marcos, TX → AUS 41m

Check-in & Security 90m

Flight 3m

Arrival & Baggage 30m

AUS → Montopolis, TX 10m

Cost Breakdown

Ticket (1 pax @ $121) $121

Airports

San Marcos, TX AUS — Austin Bergstrom International Airport 27 mi, ~41m drive

Montopolis, TX AUS — Austin Bergstrom International Airport 4 mi, ~10m drive

No scheduled flights found

No commercial flights between AUS and AUS. 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

Train

Amtrak

Door to Door

1h 54m

54m on rail

Total Cost

CO2

2 kg

Route

Texas Eagle

Door-to-Door Timeline

San Marcos, TX → San Marcos Amtrak 10m

Boarding 30m

Train ride 54m

Arrival 10m

Austin → Montopolis, TX 10m

Cost Breakdown

Ticket (1 pax @ $6) $6

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

Stations

From San Marcos Amtrak 0 mi, ~10m drive

To Austin 4 mi, ~10m drive

Service

Direct

Frequency

~9/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 9 trips per week

− Amtrak delays can be unpredictable

− Need transportation to/from station

− Less flexibility than driving

Bus

FlixBus

Door to Door

1h 25m

40m on road

Total Cost

CO2

2 kg

Route

FlixBus US1164

Door-to-Door Timeline

San Marcos, TX → San Marcos (CARTS) (SMT6) 10m

Boarding 15m

Bus ride 40m

Arrival 10m

Austin Eastside Bus Plaza (AUS6) → Montopolis, TX 10m

Cost Breakdown

Ticket (1 pax @ $3) $3

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

Stations

From SMT6 — San Marcos (CARTS) 0 mi, ~10m drive

To AUS6 — Austin Eastside Bus Plaza 1 mi, ~10m 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	Train	Bus
Door-to-door time	36m	2h 54m	1h 54m	1h 25m
Total cost (1 person)	$43	$121	$6	$3
Carbon footprint	14 kg CO₂	7 kg CO₂	2 kg CO₂	2 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, 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 15, 2026.

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