China Southern Airlines Flight 3721 Deals & Information (2025/2026)

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Frequently asked questions

What route does flight number CZ3721 take?
CZ3721 takes multiple routes. The most popular is between Changsha Airport (CSX-Huanghua Intl.) and Xi’an Airport (XIY-Xianyang Intl.), which flies direct. This service typically takes 1 hour and 55 minutes. That said, you might find other flights with the same number that are multi-stop.
What terminal does CZ3721 fly out of?
If you’re departing from Changsha Airport, there’s every chance you’ll board the plane from Terminal 2. The most popular route for CZ3721 is Changsha Airport to Xianyang Intl. Airport (XIY), which is a direct flight.
What kind of plane is on flight number CZ3721?
It’s likely you’ll travel aboard the Airbus A321 if you’re booked on flight CZ3721 from Changsha Airport (CSX-Huanghua Intl.) to XIY. It’s the most commonly used aircraft on this popular route.
If I am not able to travel due to COVID-19, can I change my flight to a later date?
For more info about changing your CZ3721 flight with Travelocity, please visit our Customer Service Portal.