$99 Find Cheap Flights from Puerto Rico to St. Louis - Compare and Save

Based on KAYAK data, the cheapest day to fly to St. Louis is Saturday where round-trip tickets can be as cheap as $823. On the other hand, the most expensive day to fly is Saturday, where round-trip prices are $823 on average.

The cheapest month for flights to St. Louis is October, where tickets cost $316 on average for return flights. On the other hand, the most expensive months are July and January, where the average cost of tickets from Puerto Rico is $587 and $496 respectively. For one-way flights, the best month to travel is September with an average price of $188.

The cheapest time of day to fly to St. Louis is generally in the evening, when round-trip flights cost $751 on average. The most expensive time of day to fly to St. Louis is generally in the morning, which is peak travel time and where the average cost of a ticket is $823.

To get a below average price, you should book around 5 weeks before departure, which saves you about 49% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.

The duration of your flight to St. Louis depends on your departure and arrival airports. Obviously, any flights that include a layover will also be longer. The most popular route to St. Louis on KAYAK is from San Juan, which takes 8h 44m.

There are around 370 direct flights from within Puerto Rico to St. Louis every day. Most flights depart in the afternoon, with 34% of flights departing in the afternoon.

There are not any long-haul (6-12 hour flight duration) or short-haul (up to 3 hour flight duration) flights to St. Louis. Instead, there are 1 medium-haul flights (3-6 hour flight duration), with the most arriving from San Juan.

From Puerto Rico, there are direct flights to St. Louis from 1 city. This city is San Juan and there are 1 direct flights each week.