MSN has partnered with The Points Guy for our coverage of credit card products. MSN and The Points Guy may receive a commission from card issuers. Editor’s note: This is a recurring post, regularly updated with new information. Ultra-long-haul flights are back in the air after a brief pause during the pandemic. These flights, which can take as long as 19 hours, connect some of the world’s biggest cities without a stop in an intermediate hub.