![](http://www.ecns.cn/hd/2020/03/24/db14793ee4654902a34b08bf5637c6bf.jpg)
American Airlines passenger planes crowd a runway where they are parked due to flight reductions to slow the spread of coronavirus disease, at Tulsa International Airport in Tulsa, Oklahoma, U.S. March 23, 2020. (Photo/Agencies)
![](http://www.ecns.cn/hd/2020/03/24/7338c621e81a4950b5f6b449f35955e5.jpg)
American Airlines passenger planes crowd a runway where they are parked due to flight reductions to slow the spread of coronavirus disease, at Tulsa International Airport in Tulsa, Oklahoma, U.S. March 23, 2020. (Photo/Agencies)
![](http://www.ecns.cn/hd/2020/03/24/d49805b43fba47e68a647c4a7f5d17e5.jpg)
American Airlines passenger planes crowd a runway where they are parked due to flight reductions to slow the spread of coronavirus disease, at Tulsa International Airport in Tulsa, Oklahoma, U.S. March 23, 2020. (Photo/Agencies)
![](http://www.ecns.cn/hd/2020/03/24/4208f8021b424f3eba073bb8430b65f0.jpg)
American Airlines passenger planes crowd a runway where they are parked due to flight reductions to slow the spread of coronavirus disease, at Tulsa International Airport in Tulsa, Oklahoma, U.S. March 23, 2020. (Photo/Agencies)
![](http://www.ecns.cn/hd/2020/03/24/9e80fb03442a435ab07739daf10eed07.jpg)
American Airlines passenger planes crowd a runway where they are parked due to flight reductions to slow the spread of coronavirus disease, at Tulsa International Airport in Tulsa, Oklahoma, U.S. March 23, 2020. (Photo/Agencies)
![](http://www.ecns.cn/hd/2020/03/24/777b680144b54cbcbb58027ca903dd9d.jpg)
American Airlines passenger planes crowd a runway where they are parked due to flight reductions to slow the spread of coronavirus disease, at Tulsa International Airport in Tulsa, Oklahoma, U.S. March 23, 2020. (Photo/Agencies)