Cheap Flights from San Salvador (SAL) to St. Louis (STL)

Popular airlines from El Salvador Intl. Airport (SAL) to St. Louis Lambert Intl. Airport (STL)

Flights from San Salvador (SAL) to St. Louis (STL)
Origin airport
El Salvador Intl.
Destination airport
Lambert-St. Louis Intl.
Airlines serving
American Airlines, Delta, United
Distance
1749 mi

San Salvador to St. Louis Flights

The cheapest times to fly from San Salvador to St. Louis

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from San Salvador to St. Louis are during the month of . You can find some of the cheapest flights from San Salvador to St. Louis with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from San Salvador to St. Louis

Sunday is one of the best days to book for cheap flights from San Salvador to St. Louis: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from San Salvador to St. Louis

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from San Salvador to St. Louis in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap San Salvador to St. Louis flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your San Salvador to St. Louis airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from El Salvador Intl. Airport (SAL) to Lambert-St. Louis Intl. Airport (STL) cost?
Lock in a cheap one-way flight or cheap return flight from El Salvador Intl. Airport (SAL) to Lambert-St. Louis Intl. Airport (STL) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from El Salvador Intl. Airport (SAL) to Lambert-St. Louis Intl. Airport (STL)?
The cheapest month to fly from SAL to STL is , when demand is low. Off-peak season is typically when airlines offer lower prices between these airports.
What is the cheapest airline that flies from El Salvador Intl. Airport (SAL) to Lambert-St. Louis Intl. Airport (STL)?
Expedia's filter tool lets you easily compare different airlines, departure times and fares all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest SAL to STL flight.
How many flights per day from El Salvador Intl. Airport (SAL) to Lambert-St. Louis Intl. Airport (STL)?
There are no daily direct flights from El Salvador Intl. Airport (SAL) to Lambert-St. Louis Intl. Airport (STL). But you can opt for flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be soaring above the clouds in no time at all.
What day of the week has the most flights from SAL to STL?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Keep in mind that flight schedules can vary depending on a number of factors, including the airline and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from El Salvador Intl. Airport (SAL) to Lambert-St. Louis Intl. Airport (STL)?
To avoid possible delays on the El Salvador Intl. Airport (SAL) to Lambert-St. Louis Intl. Airport (STL) route, aim to fly before 3 PM. Departures after this time have a 22% higher chance of cancellation.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from El Salvador Intl. Airport (SAL) to Lambert-St. Louis Intl. Airport (STL) last-minute?
Booking your ticket from SAL to STL just before your journey is generally more expensive. But if you're flexible with your departure dates and times, you could land a cheap last-minute fare.
Is it cheaper to book a SAL to STL flight and hotel package?
You'll typically save money by booking a SAL to STL flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one place. Once you've selected your ideal flights and accommodations, consider other add-ons like activities, car rentals and tours.
Can I cancel or change the date of my flight from El Salvador Intl. Airport (SAL) to Lambert-St. Louis Intl. Airport (STL)?
Typically, you can cancel or reschedule your SAL to STL flight. However, there may be additional charges, especially if you made your booking more than 24 hours ago. Check your itinerary for the airline's fees and guidelines on flight changes, or if you need further details, go to our Customer Service portal.

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*Available to One Key members.