Spotting

Antimatterhands, you saw a nupture flight. These winged ants were male and female alates. Alate ants get out of the nest for the first time during summer / spring, where they fly away. This is called a nupture flight. Male alates fertilize the female alates, which chew off their wings upon landing, while males die, as they are not useful anymore. Females become queen ants, where they find a dark and quiet spot to start laying brood. They feed the brood with their liquefied wing muscles, until ants are born. The first generation of ants are called nanitics. Then, the nanitics help the queen to feed and protect the next brood, while also bringing food to the queen. This is how an ant colony starts.
This ant on the image is a queen ant that has already chewed off her wings. By the way, I have ant keeping as a hobby. It is really fun!