Cheap flights from Houston to San Juan from $190

If you’re not able to fly to San Juan in January, then August is your next best option. Flight prices from Houston to San Juan during August average around $64.

The cheapest day to depart from Houston to San Juan is on a Thursday when prices can be found for as low as $506. The most expensive day to fly to San Juan is Monday, with ticket prices averaging around $752.

The cheapest time of day to fly to San Juan is in the evening when flights can be purchased for as low as $570. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $589 on average. Flights to San Juan from Houston in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

Fly from Houston George Bush Intcntl to San Juan Luis Munoz Marin Intl for the best Houston - San Juan flight prices

You are more likely to see cheaper flights to San Juan from Houston when booking weeks ahead of your departure date. In general, you can expect to find flights to San Juan for around $433 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Juan from Houston for as low as $368 on momondo.

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

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

United Airlines, Frontier and American Airlines are the top three most popular airlines that fly to San Juan from Houston according to our data. United Airlines is the first choice among our users, with 69% of people opting to fly with this airline when traveling to San Juan. Keep in mind that there are 6 different airlines that fly to San Juan on a routine basis, so you have a few additional options to choose from.

Historically, on average around 29% of flights between Houston and San Juan have experienced a delay on any given week. The average delay length over the past 12 months has been 115 minutes.

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

Friday 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, Southwest have had the least number of delays on this route over the last 12 months; with about 29% of their flights experiencing any sort of delay.

The number of flights available between Houston and San Juan is 10 per day as of July 2026. The most frequent departure time is 3:00PM, with 39% of daily flights leaving in the afternoon.

The number of flights available between Houston and San Juan is 75 per week as of July 2026. The most frequent departure day is Mon, with 15% of weekly flights leaving on this day.