Updated with additional details from DOT application

Alaska Airlines is seeking approval for new flights from Portland International airport to Puerto Vallarta and San Jose del Cabo, Mexico, from November.

The Portland-Puerto Vallarta route will operate three times-weekly from 4 November to 26 April 2014, and the Portland-San Jose del Cabo route four-times weekly from 3 November to 27 April on Boeing 737-800 aircraft, according to the Seattle-based carrier. They are subject to approval by the US and Mexican aviation authorities.

“Alaska Airlines is committed to offering the most nonstop service from the Pacific Northwest to places our customers want to explore, and Los Cabos [San Jose del Cabo] and Puerto Vallarta are hot spots," says Joe Sprague, senior vice-president of communications and external relations at Alaska, in a statement.

The new routes follow a more than 13% increase in seat capacity on Alaska in Portland during the year ending in April, Innovata FlightMaps Analytics shows.

No other carriers fly between Portland and either Puerto Vallarta or San Jose del Cabo, according to Innovata schedules.

Source: Cirium Dashboard