Allegiant Air recently announced service expansion in 11 cities, including to San Diego, according to a press release.

The new seasonal routes to San Diego via San Diego International Airport include: Las Vegas, Nevada, and Tulsa, Oklahoma, beginning June 3; Billings, Montana, and Medford, Oregon, starting June 4; and Sioux Falls, South Dakota, and Idaho Falls, kicking off June 5. One-way fares are as low as $43-$69, as per the airline.

“With summer quickly approaching, we know that many leisure travelers are looking to secure their vacation plans,” said Drew Wells, Allegiant vice president of planning and revenue. “These new routes expand our network of affordable, convenient flights and offer vacationers nonstop access to even more popular destinations for their summer adventures.”

Allegiant Air, founded in 1999, is based in Las Vegas and serves more than 450 routes in small-to-medium cities around the country.

Travel & Hospitality reporter Mariel Concepcion can be reached at or 858-634-4625.