Cheap flights from Houston to San Diego from $99

If you are unable to visit San Diego during the month of November, then departing from Houston during the month June is also very affordable. Most momondo users find prices during this month for around $52.

The cheapest day to depart from Houston to San Diego is on a Thursday. Travelers who choose to depart for San Diego on a Thursday will often find tickets for as low as $433. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $536. These prices are subject to change though, so be sure to set up a Price Alert for flights to San Diego.

The cheapest time of day to fly to San Diego is in the afternoon when flights can be purchased for as low as $463. Flights at noon are often more expensive with an average ticket price of $490.

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

You are more likely to see cheaper flights to San Diego from Houston when booking weeks ahead of your departure date. In general, you can expect to find flights to San Diego for around $427 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Diego from Houston for as low as $336 on momondo.

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

United Airlines, Frontier and Southwest are the top three most popular airlines that fly to San Diego from Houston according to our data. United Airlines is the first choice among our users, with 51% of people opting to fly with this airline when traveling to San Diego. Keep in mind that there are 6 different airlines that fly to San Diego on a routine basis, so you have a few additional options to choose from.

Historically, on average around 17% of flights between Houston and San Diego have experienced a delay on any given week. The average delay length over the past 12 months has been 154 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights at night have, in the past, seen delays more frequently in comparison.

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Monday has historically seen more delays on average compared to the rest of the week.

According to our data, United Airlines have had the least number of delays on this route over the last 12 months; with about 17% of their flights experiencing any sort of delay.

The number of flights available between Houston and San Diego is 8 per day as of May 2026. The most frequent departure time is 7:00PM, with 41% of daily flights leaving in the evening.

As of May 2026, 62 flights take off from Houston and land in San Diego each week. The most common flight departure day for this route is Mon, with 23% of weekly flights taking off on this day.