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El Salvador

Cheap flights from St. Louis (STL) to El Salvador

STL — SAL
Jan 22 — Jan 291
Thu 1/22
Thu 1/29
1 adult, Economy
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Find flight deals from St. Louis to El Salvador

Keep the following information in mind while searching for St. Louis to El Salvador flight deals. Data was last updated December 23, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Popular in

December

Cheapest in

August

Average price

$1,187
Provider with most accurate pricing for Lambert-St Louis-San Salvador El Salvador Intl flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-San Salvador El Salvador Intl flights.
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Highest demand for flights based on searches. 27% potential increase in price ($217 potential increase over avg. RT price).
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Cheapest flight prices on average. 10% potential price decrease ($55 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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Cheapflights Insights

Everything you need to know about your flight from St. Louis to El Salvador

What is the cheapest month to book a flight from St. Louis to El Salvador?

Currently, August is the cheapest month in which you can book a flight from St. Louis to El Salvador (average of $366). Flying from St. Louis to El Salvador in December is currently the most expensive (average of $661). 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.

Reviews of airlines servicing El Salvador

Get insights into the airlines that provide service to El 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 El Salvador. Reviews last updated December 23, 2025.
Read through reviews of airlines operating flights from St. Louis to El Salvador, such as United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,105 reviews

Crew

8.1

Entertainment

7.1

Food

6.6

Boarding

7.7

Overall

7.4

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
United Airlines
7.4
Good
9,105 reviews
United Airlines
7.4
Good
9,105 reviews

Crew

8.1

Entertainment

7.1

Food

6.6

Boarding

7.7

Overall

7.4

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to El Salvador. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from St. Louis to El Salvador?

    Lambert-St Louis (STL), located 12.7 mi from the city center, is the airport you fly out of when you book flights from St. Louis to El Salvador.

  • Can I find deals for flights from St. Louis to El Salvador that include hotel bookings?

    Yes. In addition to deals on St. Louis to El Salvador flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to El Salvador?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to El Salvador.

  • Can I find deals for business class flights from St. Louis to El Salvador?

    Yes. Cheapflights offers flight deals from St. Louis to El Salvador by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from St. Louis to El Salvador?

    Currently, August is the cheapest month in which you can book a flight from St. Louis to El Salvador (average of $366). Flying from St. Louis to El Salvador in December is currently the most expensive (average of $661). 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.

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Top airline flying from St. Louis to El Salvador

Discover the top airline that operate flights from St. Louis to El 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 December 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$423Average$491FlexibilityNo cancel feeOn-time69%

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