Cheap flights from Key West to St. Louis (EYW - STL)
Find cheap flights from Key West to St. Louis with Cheapflights
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 Key West to St. Louis
Discover tips and strategies to find the most affordable flight options for your journey from Key West (EYW) to St. Louis (STL). 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 June 17, 2025.
Popular in | April |
|---|---|
Cheapest in | September |
Average price | $324 |
Best time to book a flight from Key West to St. Louis
Have a flexible travel schedule? Discover the best time to fly to St. Louis from Key West with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Key West to St. Louis
What is the cheapest month to book a flight from Key West to St. Louis?
Currently, August is the cheapest month in which you can book a flight from Key West to St. Louis (average of $311). Flying from Key West to St. Louis in March is currently the most expensive (average of $356). 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 EYW to STL?
Find hourly flight availability from Key West to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 17, 2025.
When flying from Key West to St. Louis, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 4% versus a flight in the morning.
Rainfall in St. Louis by month
Plan your trip to St. Louis by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.
Temperature in St. Louis by month
Plan your trip to St. Louis by taking into account the average temperature totals by month.
If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).
Related info for your journey
Find useful and relevant information for your journey from Key West to St. Louis. 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 Key West?
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Alternative routes for Key West to St. Louis
See prices for flight routes from nearby airports that may be better suited for you.
Top 2 airlines flying from Key West to St. Louis
Discover the top 2 airlines that operate flights from Key West to St. Louis. 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 June 17, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$240 | Average$383 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$258 | Average$348 | FlexibilityNo cancel fee | On-time71% |