Cheap flights from St. Louis to San Juan

If you’re not able to fly to San Juan in April, then October is your next best option. Flight prices from St. Louis to San Juan during October average around $336.

Fly from Lambert-St Louis to San Juan Luis Munoz Marin Intl for the best Lambert-St Louis - San Juan flight prices

You are more likely to see cheaper flights to San Juan from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to San Juan for around $434 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Juan from St. Louis for as low as $350 on momondo.

There is only 1 cabin class available to choose from on St. Louis to San Juan flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Historically, on average around 30% of flights between St. Louis and San Juan have experienced a delay on any given week. The average delay length over the past 12 months has been 94 minutes.

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

Saturday is statistically the day of the week which experiences the fewest number of delays on this flight route. Saturday 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 30% of their flights experiencing any sort of delay.