United will launch three new domestic routes next spring, two of them coast-to-coast.
The carrier confirmed to AirlineGeeks that it will start service from San Francisco to Charleston, South Carolina, Hartford, Connecticut, and Oklahoma City on March 28, 2027. The connection to Charleston is seasonal and will run through Nov. 30, 2027; service to Oklahoma City and Hartford will operate year-round.
None of the three cities currently have nonstop flights to San Francisco.
United also provided start and end dates for three previously announced routes it will launch next year in collaboration with Air Canada.
New seasonal daily service from Denver to Ottawa will operate from April 29, 2027, to Oct. 31, 2027. Another seasonal connection from Denver, to Quebec City, will launch May 29, 2027, and run through Oct. 30, 2027. Denver-Quebec City will operate on Saturdays only.
Seasonal Saturday-only service between Newark, New Jersey, and St. John’s will operate from June 24, 2027, to Sept. 7, 2027.
Tickets for all six new routes are now available for purchase.

