Nonstop flights from Houston to San Diego

2 airlines fly from 2 Houston airports (IAH and HOU) to San Diego (SAN), with up to 7 flights a day.

IAHSAN

Routes

2 airport pairs

When they leave

Houston time

6:15a8:50pFirst departure 6:15 AM, last 8:50 PM

Four in the morning, 6:15 AM to 11:55 AM, then two in the afternoon, 12:15 PM to 4:24 PM, then three in the evening, 5:10 PM to 8:50 PM.

Every flight

Earliest first

6:15 AM→7:25 AMHOU to SANSouthwest AirlinesBoeing 737 MAX 8Mon, Thu, Fri, Sun
9:25 AM→10:40 AMHOU to SANSouthwest AirlinesBoeing 737 MAX 8Tue, Wed
9:33 AM→10:55 AMIAH to SANUnited AirlinesBoeing 737Daily
11:55 AM→1:17 PMIAH to SANUnited AirlinesBoeing 737 MAX 9Daily
12:15 PM→1:25 PMHOU to SANSouthwest AirlinesBoeing 737-700Daily
4:24 PM→5:46 PMIAH to SANUnited AirlinesBoeing 737Daily
5:10 PM→6:20 PMHOU to SANSouthwest AirlinesBoeing 737-700Tue, Wed
7:56 PM→9:25 PMIAH to SANUnited AirlinesBoeing 737 MAX 9Daily
8:50 PM→10:10 PMHOU to SANSouthwest AirlinesBoeing 737 MAX 8Mon, Thu, Fri, Sat, Sun

Schedules last checked Sep 20, 2026. Times are local.

Flying from Houston to San Diego

United Airlines flies most often, 4 times a day on the Boeing 737 and Boeing 737 MAX 9. Southwest Airlines flies 2 to 3 times a day on the Boeing 737 MAX 8 and Boeing 737-700.

There are 6 or 7 flights every day of the week. The first arrival in San Diego is at 7:25 AM and the last at 10:10 PM.

IAH to SAN is the busiest airport pair, with 28 flights a week, then HOU to SAN with 20.

Flying back, San Diego to Houston has 46 nonstop flights a week.

Return flights

San Diego to HoustonView

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

Schedules as of Oct 9, 2026.