Cheap flights from San Diego to Houston from $145

The month of October is, on average, the cheapest month to fly to Houston from San Diego, with most prices found around $80. The month of September is another great option to travel to Houston, with average flight prices from San Diego averaging around $81.

On average, the least expensive day to fly to Houston from San Diego is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $441. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Houston on Sunday is $525.

Our data shows that the cheapest San Diego to Houston flights are usually those with departure times in the evening. Our users have found flights to Houston in the evening for as low as $465. Try not to purchase tickets in the afternoon because they tend to be around $535. Of course, these prices can vary depending on the time of year and what airport you fly to.

Fly from San Diego to Houston George Bush Intcntl for the best San Diego - Houston flight prices

You are more likely to see cheaper flights to Houston from San Diego when booking weeks ahead of your departure date. In general, you can expect to find flights to Houston for around $433 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Houston from San Diego for as low as $306 on momondo.

There are 4 cabin classes available to choose from on San Diego to Houston flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Frontier, Southwest, and Delta are the most popular carriers operating from San Diego to Houston

United Airlines, Frontier and Southwest are the top three most popular airlines that fly to Houston from San Diego according to our data. United Airlines is the first choice among our users, with 53% of people opting to fly with this airline when traveling to Houston. Keep in mind that there are 5 different airlines that fly to Houston on a routine basis, so you have a few additional options to choose from.

The number of flights available between San Diego and Houston is 7 per day as of July 2026. The most frequent departure time is 11:00AM, with 72% of daily flights leaving at noon.

As of July 2026, 51 flights take off from San Diego and land in Houston each week. The most common flight departure day for this route is Mon, with 20% of weekly flights taking off on this day.