Nonstop flights from Houston to San Antonio

2 airlines fly from 2 Houston airports (IAH and HOU) to San Antonio (SAT), with up to 11 flights a day.

IAHSAT

Routes

2 airport pairs

When they leave

Houston time

7:20a9:55pFirst departure 7:20 AM, last 9:55 PM

Seven in the morning, 7:20 AM to 11:20 AM, then eight in the afternoon, 12:08 PM to 4:35 PM, then six in the evening, 6:49 PM to 9:55 PM.

Every flight

Earliest first

7:20 AM→8:27 AMIAH to SATUnited AirlinesAirbus A320Mon, Fri, Sat, Sun
7:20 AM→8:26 AMIAH to SATUnited AirlinesBoeing 737Tue
8:10 AM→9:10 AMHOU to SATSouthwest AirlinesBoeing 737Sat
8:30 AM→9:30 AMHOU to SATSouthwest AirlinesBoeing 737-700Sun
9:30 AM→10:36 AMIAH to SATUnited AirlinesBoeing 737 MAX 9Tue, Wed, Thu
9:39 AM→10:46 AMIAH to SATUnited AirlinesEmbraer 175Mon, Fri, Sat, Sun
10:05 AM→11:10 AMHOU to SATSouthwest AirlinesBoeing 737 MAX 8Mon, Thu, Fri
11:20 AM→12:20 PMHOU to SATSouthwest AirlinesBoeing 737-700Tue, Wed
12:08 PM→1:17 PMIAH to SATUnited AirlinesEmbraer 175Mon, Fri, Sat, Sun
12:20 PM→1:29 PMIAH to SATUnited AirlinesEmbraer 175Tue, Wed, Thu
1:45 PM→2:45 PMHOU to SATSouthwest AirlinesBoeing 737Mon, Thu, Fri
2:31 PM→3:39 PMIAH to SATUnited AirlinesAirbus A320Mon, Fri, Sat, Sun
2:35 PM→3:43 PMIAH to SATUnited AirlinesAirbus A320Tue, Wed, Thu
2:40 PM→3:40 PMHOU to SATSouthwest AirlinesBoeing 737 MAX 8Tue, Wed, Sat
4:05 PM→5:05 PMHOU to SATSouthwest AirlinesBoeing 737-700Sun
4:35 PM→5:44 PMIAH to SATUnited AirlinesEmbraer 175Mon, Fri, Sun
4:35 PM→5:44 PMIAH to SATUnited AirlinesEmbraer 175Sat
4:35 PM→5:43 PMIAH to SATUnited AirlinesBoeing 737Tue, Wed
4:35 PM→5:44 PMIAH to SATUnited AirlinesEmbraer 175Thu
6:49 PM→7:57 PMIAH to SATUnited AirlinesBoeing 737Daily
8:05 PM→9:13 PMIAH to SATUnited AirlinesAirbus A320Daily
8:40 PM→9:40 PMHOU to SATSouthwest AirlinesBoeing 737-700Tue, Wed, Sat
8:55 PM→9:55 PMHOU to SATSouthwest AirlinesBoeing 737-700Mon, Thu, Fri
9:35 PM→10:39 PMIAH to SATUnited AirlinesBoeing 737 MAX 9Daily
9:55 PM→10:55 PMHOU to SATSouthwest AirlinesBoeing 737-700Sun

Schedules last checked Sep 21, 2026. Times are local.

Flying from Houston to San Antonio

United Airlines flies most often, 7 to 8 times a day on the Embraer 175, Airbus A320, Boeing 737 and Boeing 737 MAX 9. Southwest Airlines flies 3 times a day on the Boeing 737-700, Boeing 737 and Boeing 737 MAX 8.

There are 10 or 11 flights every day of the week. The first arrival in San Antonio is at 8:26 AM and the last at 10:55 PM.

IAH to SAT is the busiest airport pair, with 54 flights a week, then HOU to SAT with 21.

Flying back, San Antonio to Houston has 74 nonstop flights a week.

Return flights

San Antonio to HoustonView

Find the cheapest day to fly from Houston to San Antonio.

Schedules as of Oct 9, 2026.