Cheap flights from San Francisco to Houston from $139

The month of January is, on average, the cheapest month to fly to Houston from San Francisco, with most prices found around $333. The month of April is another great option to travel to Houston, with average flight prices from San Francisco averaging around $383.

Our data shows that the cheapest San Francisco to Houston flights are usually those with departure times in the afternoon. Our users have found flights to Houston in the afternoon for as low as $503. Try not to purchase tickets in the morning because they tend to be around $605. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

You are more likely to see cheaper flights to Houston from San Francisco when booking weeks ahead of your departure date. In general, you can expect to find flights to Houston for around $410 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Houston from San Francisco for as low as $316 on momondo.

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

United Airlines, Frontier and Southwest are the top three most popular airlines that fly to Houston from San Francisco according to our data. United Airlines is the first choice among our users, with 64% of people opting to fly with this airline when traveling to Houston. Keep in mind that there are 6 different airlines that fly to Houston on a routine basis, so you have a few additional options to choose from.

Historically, on average around 9% of flights between San Francisco and Houston have experienced a delay on any given week. The average delay length over the past 12 months has been 144 minutes.

Generally, flights departing at night tend to experience fewer delays. Flights in the evening 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. Sunday 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 9% of their flights experiencing any sort of delay.

As of March 2026, there are 16 flights per day flying from San Francisco to Houston. The most common time of day flights depart is 5:00PM, with 37% of flights taking off in the afternoon.

As of March 2026, there are 118 flights per week flying from San Francisco to Houston. The most common day of the week flights depart is Fri, with 31% of flights taking off on this day.