Round-trip from | $322 |
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Monday is generally a great day to depart. Flying on this day could help you save up to 4%.
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 1% versus a flight in the morning.
Currently, September is the cheapest month in which you can book a flight from Key West to St. Louis (average of $322). Flying from Key West to St. Louis in July is currently the most expensive (average of $377). 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.
January
$326
February
$331
March
$357
April
$337
May
$345
June
$371
July
$377
August
$336
September
$322
October
$324
November
$336
December
$326
STL Temperature | 32 - 80.6 °F |
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Yes, Cheapflights offers price alerts on Key West to St. Louis flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.