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Cheap Flights from San Juan to St Louis

Compare San Juan to St Louis flight deals

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

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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? Find the lowest prices on one-way and return tickets right here.
St Louis.SAR 384 per passenger.Departing Wed, 24 Dec.One-way flight with United.Outbound indirect flight with United, departs from San Juan Luis Munoz Marin on Wed, 24 Dec, arriving in St Louis.Price includes taxes and charges.From SAR 384, select.
St Louis.SAR 384 per passenger.Departing Sat, 20 Sep.One-way flight with United.Outbound indirect flight with United, departs from San Juan Luis Munoz Marin on Sat, 20 Sep, arriving in St Louis.Price includes taxes and charges.From SAR 384, select.
St Louis.SAR 384 per passenger.Departing Tue, 28 Oct.One-way flight with United.Outbound indirect flight with United, departs from San Juan Luis Munoz Marin on Tue, 28 Oct, arriving in St Louis.Price includes taxes and charges.From SAR 384, select.
St Louis.SAR 731 per passenger.Departing Sat, 28 Feb.One-way flight with United.Outbound indirect flight with United, departs from San Juan Luis Munoz Marin on Sat, 28 Feb, arriving in St Louis.Price includes taxes and charges.From SAR 731, select.
St Louis.SAR 757 per passenger.Departing Mon, 25 Aug.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Juan Luis Munoz Marin on Mon, 25 Aug, arriving in St Louis.Price includes taxes and charges.From SAR 757, select.
St Louis.SAR 1,153 per passenger.Departing Sat, 21 Mar.One-way flight with United.Outbound indirect flight with United, departs from San Juan Luis Munoz Marin on Sat, 21 Mar, arriving in St Louis.Price includes taxes and charges.From SAR 1,153, select.
St Louis.SAR 1,320 per passenger.Departing Sat, 28 Feb.One-way flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from San Juan Luis Munoz Marin on Sat, 28 Feb, arriving in St Louis.Price includes taxes and charges.From SAR 1,320, select.
St Louis.SAR 1,466 per passenger.Departing Thu, 1 Jan.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Juan Luis Munoz Marin on Thu, 1 Jan, arriving in St Louis.Price includes taxes and charges.From SAR 1,466, select.

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 September.
Aug
from SAR 757
Sep
from SAR 384
Oct
from SAR 384
Nov
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Dec
from SAR 384
Jan
from SAR 1,466
Feb
from SAR 731
Mar
from SAR 1,153
Apr
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May
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Jun
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Jul
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Direct flights from San Juan to St Louis

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.

San Juan to St Louis: Flight information

The things to know before you go.
Cheapest flight foundSAR 384
Cheapest month to flySeptember
Average flight time5 hrs, 13 mins
Most popular airlineSouthwest Airlines
Average flights per week1

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 SAR 912. 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 13 minutes is the average flight time from San Juan to St Louis.
Southwest Airlines flies direct from San Juan to St Louis.
As of August 2025, there is one flight per week flying from San Juan to St Louis.
The cheapest month to fly from San Juan to St Louis is usually March.
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 Thursday, 5 March 2026.
Yes – the average flight time is 5 hours and 13 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 Delta .

How to find cheap flights to St Louis from San Juan

Looking for cheap tickets from San Juan to St Louis? Here are a few tips on how to secure the best flight price and make your journey as smooth as possible.

  • Simply hit 'search'. From British Airways to international carriers like Emirates, we compare all major airlines along with the most popular online travel agents to find the cheapest plane tickets from San Juan to St Louis. And with us there are no hidden fees - what you see is what you pay.
  • Compare flight deals to St Louis from San Juan from over 1,000 providers. Then choose the cheapest or fastest plane tickets.
  • Flex your dates to find the best San Juan-St Louis ticket prices. If you are flexible when it comes to your travel dates, use Skyscanner's 'Whole month' tool to find the cheapest month, and even day to fly to St Louis from San Juan.
  • Set up a Price Alert. You can easily track the fare of your cheap San Juan-St Louis flights by creating an alert. Whenever prices go down or up, you'll get an email or push notification to help make sure you get the best possible flight deal.
  • Fly without stops. Only interested in direct flights between San Juan and St Louis? Make sure to tick 'Direct flights only' when performing a search. If there are direct flights available on the route, these will appear in the results.
  • Find the cheapest Business class flights from San Juan and St Louis. We scour the internet for the best Business, Premium Economy and First Class flight fares to St Louis, too. Check the difference in price as you search – you might just chance upon a last-minute low fare. Note that not all cabin classes are available for every destination or airline.
  • Include nearby airports in your search. Widen your search for San Juan to St Louis flight deals by selecting the "add nearby airports" option. This will allow you to see flight prices for all the nearest airports at your departure point and your destination and could help you save next time you travel.

    • Combine your flight to St Louis from San Juan with hotels and car hire

    Once you've secured your cheap flight ticket from San Juan to St Louis, discover the best prices and exclusive rates for hotels in St Louis or nearby. You can also compare hundreds of car hire companies in one go so that you get the best car hire price for your trip.


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 45 days.