262 € Cheap Flights from San Juan Luis Munoz Marin to St Louis

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      Travellers and cabin class, 1 Adult, Economy
      Southwest Airlines

      Compare San Juan Luis Munoz Marin to St Louis flight deals

      Find the cheapest month or even day of the year to fly to St Louis

      Book the best St Louis fare with no extra fees

      Flight deals from San Juan Luis Munoz Marin to St Louis

      Looking for a cheap last-minute deal or the best return flight from San Juan Luis Munoz Marin Airport to St Louis Airport? If you want to travel next month, return fares start from 352 €. Find the lowest prices on one-way and return tickets right here.
      How did we find these deals? The deals you see here are the lowest prices for flight tickets from San Juan Luis Munoz Marin to St Louis found in the last 4 days, and are subject to change and availability.

      Find the cheapest month to fly from San Juan Luis Munoz Marin to St Louis

      We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like San Juan Luis Munoz Marin to St Louis flights are currently cheapest in December.

      Direct flights from San Juan Luis Munoz Marin to St Louis

      Southwest Airlines

      San Juan Luis Munoz Marin to St Louis: Alternative routes

      Compare routes from San Juan Luis Munoz Marin to St Louis below. You may find an airport to fly into that's cheaper, faster, or easier than St Louis.

      San Juan to St Louis: Flight information

      The things to know before you go.
      Cheapest flight found262 €
      Cheapest month to flyDecember
      Average flight time5 hrs, 5 mins
      Most popular airlineSouthwest Airlines
      Average flights per week1

      Finding cheap flights from San Juan Luis Munoz Marin to St Louis: Frequently asked questions

      The best price we found for a return flight from San Juan Luis Munoz Marin to St Louis is 262 €. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
      5 hours and 5 minutes is the average flight time from San Juan Luis Munoz Marin to St Louis.
      Southwest Airlines flies direct from San Juan Luis Munoz Marin to St Louis.
      As of September 2026, there is one flight per week flying from San Juan Luis Munoz Marin to St Louis.
      The cheapest month to fly from San Juan Luis Munoz Marin to St Louis is usually December.
      After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from San Juan Luis Munoz Marin Airport to St Louis Airport on Tuesday, 1 December 2026.
      Yes – the average flight time is 5 hours and 5 minutes.
      We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to St Louis but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

      We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to St Louis is around 40 days in advance, so don’t leave your flight to the last minute.

      Currently, Frontier Airlines offers the cheapest flight tickets to St Louis.

      Travelling from San Juan Luis Munoz Marin Airport (SJU) to St Louis Airport (STL): what you need to know

      • Around 4 hours 40 minutes is how long you can expect to be in the air on a direct flight from San Juan Luis Munoz Marin Airport to St Louis Airport.

      • St Louis's timezone is UTC-6, which makes St Louis two hours behind San Juan.

      • Arriving two hours before an international flight and one hour ahead of a domestic departure are travel rules worth sticking to. Show up at the airport on time to board your SJU to STL flight.

      • You'll likely experience bigger queues in popular months such as July. Arriving up to four hours ahead of international flights and two hours for domestic departures is a smart move.

      • Travelling to St Louis (and then exploring more of the United States!) is a breeze with Southwest Airlines. This popular airline offers direct flights from San Juan Luis Munoz Marin Airport to St Louis Airport.

      • The airline with the highest booking volume on this route is Southwest Airlines.

      • The most punctual carrier that offers SJU to STL flights is Southwest Airlines. Its services land as scheduled 73.33% of the time.

      • Think about adding a stopover when booking your ticket from San Juan Luis Munoz Marin Airport to St Louis Airport. Simply uncheck 'Direct flights only' to break up your trip, or perhaps explore a new destination along the way. Here are some options between SJU and STL:

        • Miami International Airport

        • Orlando International Airport

        • Tampa International Airport

      How to find the cheapest flights from San Juan Luis Munoz Marin Airport (SJU) to St Louis Airport (STL)

      • Currently, 110 € is the lowest price we've seen for a one-way San Juan Luis Munoz Marin Airport to St Louis Airport flight. The best price for a return plane ticket is 262 €. Keep in mind that fares may change due to demand at the time of booking.

      • Book three months before your departure date. After looking at the numbers on our calendar, this is how far you'll want to book ahead to find cheap tickets from SJU to STL.

      • August is the cheapest month for flights from San Juan Luis Munoz Marin Airport to St Louis Airport. If you need to travel during a different time of year, the 'Whole month' tool will give you the lowest airfares for every month.

      • Picking up cheap flights from SJU to STL is a cinch with Price Alerts. All you need to do is create one of these automatic alerts and we'll notify you as soon as there's a better deal.

      • Tailor your flights with filters. Select your ideal arrival and departure times, total journey duration and airlines. You can also sort your results by 'Best,' 'Fastest' or 'Cheapest' flights from San Juan Luis Munoz Marin Airport to St Louis Airport.

      Handy information about San Juan Luis Munoz Marin Airport (SJU)

      • San Juan Luis Munoz Marin Airport has a strong on-time record, reducing your chances of a delayed flight. Departures from SJU touch down on schedule 81% of the time.

      • San Juan Luis Munoz Marin Airport is around 11 kilometres from central San Juan. If you're ride-sharing, catching a taxi or driving from the centre, it'll take 20 minutes or so to get there, depending on the traffic.

      • The trip when using public transport takes roughly 1 hour.

      • Catching an early flight from San Juan Luis Munoz Marin Airport to St Louis Airport? Avoid rushing to the airport (and catch some extra z's) by choosing one of these hotels close to SJU:

      Arriving at St Louis Airport (STL)

      When to fly to St Louis Airport (STL)

      • July is the busiest month for flights from San Juan Luis Munoz Marin Airport to St Louis Airport. To steer clear of the crowds, visit St Louis in March.

      • When reserving your flight from San Juan Luis Munoz Marin Airport to St Louis Airport, consider the type of weather you like. July is the warmest month in St Louis, with the temperature ranging from 17ºC (63ºF) to 33ºC (91ºF).

      • January has average temperatures of between -7ºC (19ºF) and 8ºC (46ºF). Search for cheap tickets from SJU to STL sometime then if you want to travel when it's cooler.

      Explore more of the United States

      • Chicago is just one of the many places in the United States waiting to be explored once you've seen the sights of St Louis. Around 418 kilometres away to the north-east, top sights here include Millennium Park, Art Institute of Chicago and Willis Tower.

      • Indianapolis is another essential stop in the United States and is around 370 kilometres east of St Louis. No trip is complete without experiencing Lucas Oil Stadium, Eiteljorg Museum and The Children's Museum of Indianapolis.

      Prices shown on this page are estimated lowest prices only. Found in the last 12 days.