(Reuters) - United Airlines said on Thursday customers traveling from San Francisco to Hawaii would have the option to take a rapid COVID-19 test at the airport or a self-collected, mail-in test ahead of their trip, starting from Oct. 15. Customers who test negative on either test will not be subjected to the state’s 14-day quarantine requirement, United said. Airlines are pinning hopes on pre-flight COVID-19 tests as an alternative to quarantines that have decimated travel demand.