Drive or Fly: Port Isabel, TX to San Antonio, 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 BRO–SAT. At 289 miles, driving is the only practical option.

Passengers:

Vehicle:

Find Your Vehicle (EPA fuel economy data)

Drive

Door to Door

5h 30m

Distance

289.6 mi

Total Cost

$99

CO2

117 kg

Cost Breakdown

Diesel$64

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 8m

29m in the air

Air Distance

244 mi

Total Cost

$185

CO2

62 kg

Door-to-Door Timeline

Port Isabel, TX → BRO 27m

Check-in & Security 90m

Flight 29m

Arrival & Baggage 30m

SAT → San Antonio, TX 12m

Cost Breakdown

Ticket (1 pax @ $130) $130

Rental car (1 day)$55

Airports

Port Isabel, TX BRO — Brownsville South Padre Island International Airport 18 mi, ~27m drive

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

No scheduled flights found

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

+ Saves about 2h 22m 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

Bus

FlixBus

Door to Door

7h 17m

6h 10m on road

Total Cost

$28

CO2

15 kg

Route

FlixBus US1120

Door-to-Door Timeline

Port Isabel, TX → Brownsville Bus Station (BRN6) 32m

Boarding 15m

Bus ride 370m

Arrival 10m

San Antonio Bus Station (SNT6) → San Antonio, TX 10m

Cost Breakdown

Ticket (1 pax @ $28) $28

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

Stations

From BRN6 — Brownsville Bus Station 21 mi, ~32m drive

To SNT6 — San Antonio Bus Station 0 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	Bus
Door-to-door time	5h 30m	3h 8m	7h 17m
Total cost (1 person)	$99	$185	$28
Carbon footprint	117 kg CO₂	62 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: 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 21, 2026.

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