Cheap flights from St. Louis (STL) to San Salvador (SAL)
STL — SAL
Dec 5 — Dec 121
1 adult, Economy
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1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from St. Louis to San Salvador
Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to San Salvador (SAL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated November 5, 2025.
Most accurate provider | eDreams 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Popular in | December |
Cheapest in | August |
Average price | $756 |
Compare providers for flights from St. Louis to San Salvador
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to San Salvador in November.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy2 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on St. Louis-San Salvador flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on St. Louis-San Salvador flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from St. Louis-San Salvador flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on St. Louis-San Salvador flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-San Salvador flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from St. Louis to San Salvador
Have a flexible travel schedule? Discover the best time to fly to San Salvador from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from St. Louis to San Salvador
What is the cheapest month to book a flight from St. Louis to San Salvador?
Currently, August is the cheapest month in which you can book a flight from St. Louis to San Salvador (average of $366). Flying from St. Louis to San Salvador in December is currently the most expensive (average of $620). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from STL to SAL?
Find hourly flight availability from St. Louis to San Salvador. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 5, 2025.
It’s optimal to fly from St. Louis to San Salvador at noon. By choosing this option you can save up to 68% on the cost of your flight, compared to a flight in the morning.
Reviews of airlines servicing San Salvador
Get insights into the airlines that provide service to San Salvador. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Salvador. Reviews last updated November 5, 2025.
See what other customers who have flown with United Airlines from St. Louis to San Salvador have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.1
Overall
7.4
Entertainment
7.1
Boarding
7.7
Comfort
7.3
Food
6.6
Reviews
1 / 20
2.0
MediocreSebrena,Oct 2025
IAH - RSW
Crew
8.1
Overall
7.4
Entertainment
7.1
Boarding
7.7
Comfort
7.3
Food
6.6
Reviews
1 / 20
2.0
MediocreSebrena,Oct 2025
IAH - RSW
Related info for your journey
Find useful and relevant information for your journey from St. Louis to San Salvador. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near San Salvador?
Book flights to San Salvador if you plan to visit one of these locationsSonsonate
El Cuco
La Libertad
Acajutla
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Alternative routes for St. Louis to San Salvador
See prices for flight routes from nearby airports that may be better suited for you.
Top airline flying from St. Louis to San Salvador
Discover the top airline that operate flights from St. Louis to San Salvador. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated November 5, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$427 | Average$500 | FlexibilityNo cancel fee | On-time69% |