![United Airlines flight UA328, carrying 231 passengers and 10 crew on board, returns to Denver International Airport with its starboard engine on fire after it called a Mayday alert, over Denver, Colorado, U.S. February 20, 2021. Hayden Smith/@speedbird5280/Handout via REUTERS. NO RESALES. NO ARCHIVES. MANDATORY CREDIT. THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. TPX IMAGES OF THE DAY](https://thenational-the-national-prod.cdn.arcpublishing.com/resizer/v2/6QGPW72ISTNO4P75MZFHD5T7YI.jpg?smart=true&auth=26cf74883750aea1c82a34315e3ed91713c8257017b1c782d291770bbd37171a&width=400&height=225)
A United Airlines flight. Domestic travel demand improved month-on-month in March. Hayden Smith/@speedbird5280/Handout via Reuters.
A United Airlines flight. Domestic travel demand improved month-on-month in March. Hayden Smith/@speedbird5280/Handout via Reuters.
Domestic travel rises globally in March as international passenger traffic remains low
Global air cargo demand hits record high in March, Iata says