Fly from St Louis to Cancun for $260 round-trip on United.
We found seats for travel over the week of Valentine's Day, departing STL on Tuesday, February 14, returning from CUN on Tuesday, February 21.
Other dates are also available for travel from November 30 through March 1.
See our fare details for booking info.
Need a room in Cancun? Here's what's available for the above dates on Hotelwatchdog.