Skyscanner home

239 € Cheap Flights from San Juan to St Louis

Return selected
Return selected
origin
Enter the city you're flying from, or choose from the options below
Include nearby airports
    selected
    destination
    . Enter your destination, or choose from the options below
    Include nearby airports
      selected
      Travellers and cabin class, 1 Adult, Economy
      Southwest Airlines

      Compare San Juan 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 to St Louis

      Looking for a cheap last-minute deal or the best return flight from San Juan to St Louis Airport? If you want to travel next month, return fares start from 239 €. Find the lowest prices on one-way and return tickets right here.
      St Louis.239 € per passenger.Departing Sat, 3 Oct, returning Mon, 5 Oct.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Juan Luis Munoz Marin on Sat, 3 Oct, arriving in St Louis.Inbound indirect flight with Frontier Airlines, departs from St Louis on Mon, 5 Oct, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From 239 €, select.
      St Louis.262 € per passenger.Departing Tue, 1 Dec, returning Tue, 8 Dec.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Juan Luis Munoz Marin on Tue, 1 Dec, arriving in St Louis.Inbound indirect flight with Frontier Airlines, departs from St Louis on Tue, 8 Dec, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From 262 €, select.
      St Louis.264 € per passenger.Departing Fri, 6 Nov, returning Sat, 14 Nov.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Juan Luis Munoz Marin on Fri, 6 Nov, arriving in St Louis.Inbound indirect flight with Frontier Airlines, departs from St Louis on Sat, 14 Nov, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From 264 €, select.
      St Louis.300 € per passenger.Departing Sat, 17 Oct, returning Sun, 1 Nov.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Juan Luis Munoz Marin on Sat, 17 Oct, arriving in St Louis.Inbound indirect flight with Frontier Airlines, departs from St Louis on Sun, 1 Nov, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From 300 €, select.
      St Louis.323 € per passenger.Departing Wed, 23 Dec, returning Sun, 10 Jan.Return flight with United.Outbound indirect flight with United, departs from San Juan Luis Munoz Marin on Wed, 23 Dec, arriving in St Louis.Inbound indirect flight with United, departs from St Louis on Sun, 10 Jan, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From 323 €, select.
      St Louis.360 € per passenger.Departing Mon, 28 Sep, returning Fri, 2 Oct.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Juan Luis Munoz Marin on Mon, 28 Sep, arriving in St Louis.Inbound indirect flight with Frontier Airlines, departs from St Louis on Fri, 2 Oct, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From 360 €, select.
      St Louis.402 € per passenger.Departing Sat, 28 Nov, returning Sat, 5 Dec.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Juan Luis Munoz Marin on Sat, 28 Nov, arriving in St Louis.Inbound indirect flight with Frontier Airlines, departs from St Louis on Sat, 5 Dec, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From 402 €, select.
      St Louis.508 € per passenger.Departing Thu, 17 Sep, returning Mon, 21 Sep.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Juan Luis Munoz Marin on Thu, 17 Sep, arriving in St Louis.Inbound indirect flight with Frontier Airlines, departs from St Louis on Mon, 21 Sep, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From 508 €, select.
      St Louis.520 € per passenger.Departing Thu, 20 May, returning Thu, 27 May.Return flight with Delta.Outbound indirect flight with Delta, departs from San Juan Luis Munoz Marin on Thu, 20 May, arriving in St Louis.Inbound indirect flight with Delta, departs from St Louis on Thu, 27 May, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From 520 €, select.
      How did we find these deals? The deals you see here are the lowest prices for flight tickets from San Juan 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 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 to St Louis flights are currently cheapest in October.
      Sep
      from 508 €
      Oct
      from 239 €
      Nov
      from 264 €
      Dec
      from 262 €
      Jan
      Find prices
      Feb
      Find prices
      Mar
      Find prices
      Apr
      Find prices
      May
      from 520 €
      Jun
      Find prices
      Jul
      Find prices
      Aug
      Find prices

      Direct flights from San Juan to St Louis

      Southwest Airlines

      San Juan to St Louis: Alternative routes

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

      St Louis

      20km from central St Louis
      ClosestCheapest
      from 239 €
      Search flights

      Belleville

      32km from central St Louis
      Search flights

      San Juan to St Louis: Flight information

      The things to know before you go.
      Cheapest flight found239 €
      Cheapest month to flyOctober
      Average flight time5 hrs, 5 mins
      Most popular airlineSouthwest Airlines
      Average flights per week2

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

      The best price we found for a return flight from San Juan to St Louis is 239 €. 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 to St Louis.
      Southwest Airlines flies direct from San Juan to St Louis.
      As of September 2026, there are 3 flights per week flying from San Juan to St Louis.
      The cheapest month to fly from San Juan to St Louis is usually October.
      After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from San Juan to St Louis Airport on Saturday, 3 October 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.

      The cheapest airline that flies to St Louis is Frontier Airlines .

      Flying from San Juan to St Louis Lambert International Airport (STL): What you need to know

      • Luis Munoz Marin International Airport (SJU) is San Juan's main airport. Explore your options for booking a flight from San Juan to St Louis Lambert International Airport (STL) leaving from here.

      • Around 4 hours 55 minutes is the typical travel time on a direct San Juan to St Louis Lambert International Airport flight.

      • The timezone in St Louis is UTC-6, which is two hours behind San Juan. St Louis Lambert International Airport is located in St Louis.

      • Your flight from San Juan to STL won't wait if you're late, so don't forget to check in on time. Arrive up to one hour in advance for domestic flights and two hours ahead for international travel.

      • Popular months like March or other peak periods mean bigger queues and potential delays. Get a head start by arriving at the airport even earlier. Aim for at least four hours ahead of an international flight and two hours before domestic departures.

      Airports in San Juan

      Luis Munoz Marin International Airport (SJU)

      • Luis Munoz Marin International Airport (SJU) will have you travelling directly to your destination. Nonstop flights from San Juan to St Louis Lambert International Airport (STL) depart from this terminal.

      • Southwest Airlines is a well-known carrier that offers direct flights from San Juan to St Louis Lambert International Airport jetting out of SJU.

      • The majority of passengers choose to book seats with Southwest Airlines between SJU and STL.

      • Southwest Airlines is the most punctual carrier operating on this route, with 73.33% of its services arriving as scheduled.

      • We make it a breeze to book cheap flights from San Juan to STL that include a stopover. To explore all your options departing from Luis Munoz Marin International Airport (SJU), deselect 'Direct flights only.' Next, pick a flight with a stop long enough to tour your chosen city. Major stopovers between SJU and STL include:

        • Miami International Airport (MIA)

        • Orlando International Airport (MCO)

        • Tampa International Airport (TPA)

      • SJU 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 traffic conditions. If you're using public transport, expect the journey time to be around 1 hour.

      • Looking for a convenient hotel near Luis Munoz Marin International Airport? If you've booked an early flight from San Juan to St Louis Lambert International Airport, these accommodation options will put you moments from check-in:

      • 81% of flights departing from Luis Munoz Marin International Airport reach their destination according to schedule. Given its reliable on-time performance, you're unlikely to face delays when jetting out of SJU.

      About St Louis Lambert International Airport (STL)

      Getting from St Louis Lambert International Airport (STL) to central St Louis

      • St Louis Lambert International Airport is around 24 kilometres from the centre of St Louis. It takes around 25 minutes or so to get to the city by car.

      • Travelling on public transport will take you around 30 minutes.

      How to find the cheapest flights from San Juan to St Louis Lambert International Airport (STL)

      • 77 € is the best price for a one-way ticket from San Juan to St Louis Lambert International Airport. A return flight starts from 239 €. These prices can change depending on demand.

      • Get your hands on cheap flights from San Juan to STL by booking three months ahead. Based on our research, that's the ideal time frame for finding the biggest deals.

      • The best month for scoring cheap San Juan to St Louis Lambert International Airport tickets is August. Use the 'Whole month' tool to compare prices, then choose the dates offering the lowest fares.

      • There's no need to check back in every day to find out if fares have dropped when you create a Price Alert. We'll let you know when a better deal comes up on plane tickets from San Juan to STL.

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

      The best time to fly from San Juan to St Louis Lambert International Airport (STL)

      • July is when most people book flights from San Juan to St Louis Lambert International Airport (STL). Plan your visit to St Louis in December if you'd rather be there when it's quieter.

      • The warmest month in St Louis is July, with temperatures ranging between 17ºC (63ºF) and 33ºC (91ºF). Book your San Juan to STL plane ticket then if that's your idea of comfortable weather.

      • Search for cheap tickets from San Juan to St Louis Lambert International Airport in January if you'd rather travel when it's cooler. Temperatures are at their lowest then, ranging between -7ºC (19ºF) and 8ºC (46ºF).

      More about St Louis

      Explore more of the United States

      • You've visited St Louis, now it's time to explore more of the United States. Travel about 257 kilometres east to Evansville to check off its popular sights. From Mesker Park Zoo to Riverfront Park and Evansville Museum of Arts, History & Science, you'll have a full itinerary ahead.

      • Columbia is another must-experience destination in the United States and is around 177 kilometres west of St Louis. No journey is complete without experiencing Museum of Art and Archaeology, Mizzou Botanic Garden and Francis Quadrangle.

      Plan the rest of your trip from San Juan to St Louis

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