Alaska Airlines is going big at Portland, betting 97% more capacity on Tampa as of July 13, 2026, at 01:29 PDT.
Alaska Air Group NYSE:ALK is set to launch daily flights from Portland to Tampa starting Nov. 20, running through March 28, 2027, and will also begin daily Portland-Wenatchee service on Oct. 3. The carrier’s new routes look even geographically, but the numbers favor Tampa.
When both routes run, Tampa will make up 97.2% of the combined 6.39 million weekly available seat miles, looking at published plane sizes and route lengths. Available seat miles, or ASMs, come from multiplying seats by distance. Tampa is about 70% of the seats, but has most of the ASM capacity.
| Route | Service | Aircraft / seats | Weekly two-way seats | Weekly ASMs |
|---|---|---|---|---|
| Portland–Tampa | Runs daily, Nov. 20-March 28 | 737-900 / 178 | 2,492 | 6.21 million |
| Portland–Wenatchee | Daily service starts Oct. 3 | E175 / 76 | 1,064 | 0.18 million |
Alaska faces no nonstop competition on Portland-Tampa, cutting the risk of fare pressure for now. But more West Coast-Florida flights are on the way. Delta Air Lines NYSE:DAL starts three Los Angeles-Tampa flights per day Nov. 9, plus 12 peak-day LAX-Florida departures.
Alaska is boosting its Portland-Tampa route, adding flights instead of starting from scratch. The original 2021 plan was four weekly flights; now the carrier will fly seven times a week, a 75% increase. Tampa International Airport air service director Alex Heiter said Portland is “one of our largest air travel markets on the West Coast.” Alaska Airlines
Wenatchee fills the feeder role here. Alaska says it’s the only carrier serving the central Washington airport, and the Portland flights will open up more than 65 nonstop routes for those travelers. “More flexibility with travel plans that can take them to or through Portland,” said Kirsten Amrine, Alaska’s vice president of revenue management and network planning. Alaska Airlines
The split is key for investors. The 76-seater on the regional route bumps up capacity by just 180,000 weekly ASMs, though it funnels connecting traffic into Alaska’s Portland schedule. Tampa is different, adding 6.21 million weekly ASMs with a 178-seat mainline plane. That route will swing more on fares and how full the plane is.
Alaska is rolling out the expansion just ahead of a tough earnings report. The airline has pulled its full-year outlook over swings in fuel prices, cut second-quarter capacity growth to around 1%, and said in April that fuel could tack on about $600 million in expense for the quarter. Alaska is set to report Q2 results after the bell on July 21.
Monopoly service alone doesn’t draw more demand. If this winter is soft for leisure travel, Alaska may have to cut prices on its 178-seat Tampa route. The Wenatchee feeder is too small to make up the slack in seat miles if Florida demand drops. And since most of the extra distance is on the long route, higher fuel costs would make things even tougher.
Alaska closed at $49.42 on Friday, slipping 1.4%. Cash trading in the U.S. hadn’t started for Monday yet. The NYSE opens its core session at 9:30 a.m. EDT. Investors are watching to see if Alaska can stick to its capacity discipline as it brings on a new route—few departures, but higher fuel risk.
