SAN FRANCISCO -- Travelers flying in and out of San Francisco International Airport today are being asked to make sure their scheduled flight is on time.

Bad weather on Easter Sunday was causing delays from 30-90 minutes on some flights, SFO duty manager Chuck Navigante said.

Arrivals and departures at SFO were behind schedule as of 4:30 p.m., he said.

Lengthier delays were possible should storms continue through the afternoon, he said.

Travelers were being advised to check with airlines to get the most updated information about flight times and possible delays.

Contact Natalie Neysa Alund at 510-293-2469. Follow her at Twitter.com/nataliealund.