United Airlines will begin three new domestic routes from San Francisco to Charleston, South Carolina, Hartford, Connecticut, and Oklahoma City on March 28, 2027. The San Francisco to Charleston connection will be seasonal, operating through November 30, 2027, while flights to Hartford and Oklahoma City will run year-round. None of these destinations currently have nonstop service to San Francisco.
In addition, United Airlines will launch three seasonal routes in partnership with Air Canada in 2027. Daily seasonal service between Denver and Ottawa will operate from April 29 to October 31, 2027. Seasonal connections from Denver to Quebec City will run
on Saturdays only starting May 29 through October 30, 2027. A Saturday-only seasonal service will operate between Newark, New Jersey, and St. John’s from June 24 to September 7, 2027.
Tickets for all six new routes are currently available for purchase. These additions offer new nonstop options for passengers and increase the frequency of service on select seasonal routes.
United Airlines’ expansion adds direct flight options at key hubs, opening connections not previously served nonstop from San Francisco and enhancing travel choices in coordination with Air Canada at Denver and Newark.
