Concourses B And C, South Checkpoint
Portland Alaska Airlines Transportation A Day Flying Portland's Home Airline.
Alaska Airlines is the largest carrier at Portland International, and in 2026 its Portland operation got physically bigger: at least 145 daily departures across the summer peak and 62 nonstop destinations, plus a new 14,000-square-foot lounge that opened on June 4. All of it sits behind the south security checkpoint, on Concourses B and C, which is the first thing a chauffeur needs to know: an Alaska passenger belongs at the south end of the terminal, where the airline's automated bag drop and its new lounge both live. This guide maps the day of flying Portland's home airline, which concourse, which door, which bag counts as free, and what time the lounge unlocks.
ByIlyas KhairiFounder, Marquee ChauffeurLicensed and permitted since 2018
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By Ilyas Khairi, Founder of Marquee Chauffeur · Licensed and permitted since 2018 · Updated July 20, 2026
TL;DR
Alaska is PDX's largest airline, at Concourses B and C behind the south checkpoint. Concourse B, opened December 2021, is the Horizon and regional side; Concourse C carries the mainline. Alaska's new lounge, roughly 14,000 square feet with 230-plus seats, opened June 4, 2026 in the South Concession Hall and opens at 4:30 a.m. Mileage Plan became Atmos Rewards on August 20, 2025. Bag fees for flights booked on or after April 10, 2026 run $45, $55 and $200 with no prepay discount. Alaska plus Horizon carry a combined 40.3 percent of PDX passengers.
The whole-airport view, every mode compared, lives on the Portland airport transportation guide; the departures-curb mechanics on the PDX drop-off guide; and the two sibling carriers on the Delta and American Portland guides.
01The Hub Math
Alaska Runs Portland
As A Hub, Not A Stop.
Alaska does not merely serve Portland; it runs Portland as a hub, and the numbers behind that word decide how a chauffeur plans the day. It flies more departures than any other airline and carries a passenger share larger than the next two carriers combined, on a summer schedule the airline calls its biggest ever. The practical upshot is simple: on most PDX runs the odds are the passenger is flying Alaska, and the south checkpoint is where the day begins.
145 departures in the summer peak
Alaska averages at least 145 daily departures from PDX across the June-to-August 2026 peak, its largest-ever Portland summer schedule, against the more than 100 daily departures it runs year-round. That frequency is why recovering a missed Alaska connection at Portland is easier than at a thin spoke, and why the airline treats PDX as core rather than outstation.
40.3 percent of everyone who flies PDX
U.S. DOT data for the year ending July 2025 puts Alaska at 30.26 percent of PDX passengers and Horizon Air at 10.03 percent, a combined 40.3 percent for the Alaska group. Southwest is next at 13.61 percent, then Delta at 12.10 percent. No other carrier comes close to the home airline's Portland footprint.
Sixty-two nonstop destinations
Alaska's network from Portland reached 62 nonstop destinations after its October 2025 route announcement, and 2026 kept adding regional cities on the Embraer E175. The specific new-route list is covered on the Portland airport transportation guide; the headline for planning is that the map keeps widening from the south concourses.
Portland is the second-largest hub
Alaska's senior vice president for fleet, products and guest experience, Shane Jones, has called Portland the airline's second-largest hub, and Alaska says it will fly about 50 percent more seats from PDX by fall 2026 than it did two years earlier. A growing hub means more pre-dawn banks, and more pre-dawn banks mean more 4 a.m. pickups.
02Concourse Geography
Which Concourse,
And Which South Door.
Alaska's Portland gates all sit on the south side of the terminal, and knowing which of the two concourses a boarding pass names saves a walk. PDX runs four concourses, B, C, D and E, across 60 gates. Alaska uses B and C, both reached through the south security checkpoint; D and E belong to the north checkpoint. For a drop-off that means the south curb, every time, and then a glance at the boarding pass to sort B from C.
B and C, both behind the south checkpoint
The south checkpoint serves Concourses B and C, which is the whole of Alaska's Portland operation. D and E sit behind the north checkpoint and belong to Delta, United and the international gates. An Alaska passenger set down at the south curb clears into the right half of the airport immediately, with no cross-terminal correction to make later.
Concourse B is the Horizon and regional side
The Port of Portland opened Concourse B for Alaska and Horizon on December 8, 2021, replacing the old Concourse A. It has ten gate positions, and only four are jet bridges; the other six load from the ground, which can add a short walk in Portland weather at the end of an arriving trip. A boarding pass reading B is worth a heads-up.
Concourse C carries the mainline
Concourse C is where Alaska's mainline jets sit, with the airline's new lounge a short walk away in the South Concession Hall. Gate assignments are leased and shift over time, so the reliable rule is the concourse letter on the boarding pass and the south checkpoint, not a gate number. Confirm the gate on the monitors; the checkpoint never changes.
Ground-load gates change the timing
Six of Concourse B's ten positions load from the ramp rather than a jet bridge, which puts arriving passengers outside briefly before they reach the hall. The arrival-side curb mechanics, and where a chauffeur actually waits, are mapped on the Portland airport drop-off guide and its pickup companion.
03The New Lounge
A Bigger Lounge,
And A Renamed Program.
Two things changed for the frequent Portland Alaska flyer in the last year, and both affect the ground plan. The airline opened a much larger lounge in June 2026, which moves the calculus on when the car should come, and it renamed its loyalty program entirely, which changes the words on every future itinerary. Neither is cosmetic once you are timing a 4 a.m. departure around lounge hours.
Fourteen thousand square feet, opened June 4
Alaska opened its new PDX lounge on June 4, 2026: roughly 14,000 square feet with more than 230 seats, about double the space it replaced. It sits in the South Concession Hall on Level 3, past the south checkpoint, and it replaced the two smaller lounges Alaska used to run.
Doors open at 4:30 a.m.
The lounge runs from 4:30 a.m., and that opening time is the number a pre-dawn pickup is really scheduled against. Arrive before 4:30 and there is nowhere inside to sit down with a coffee; arrive just after, and the wait for an early Alaska bank becomes a comfortable hour rather than a cold one at the gate.
Mileage Plan is now Atmos Rewards
Alaska renamed Mileage Plan to Atmos Rewards on August 20, 2025, folding in Hawaiian's program. Mileage Plan members kept their balances and status; the change is mostly vocabulary, with miles now called points and elite-qualifying miles called status points. A separate choose-how-you-earn option has been announced but had not gone live by mid-2026.
Status milestones, not just tiers
Atmos rewards progress at milestones along the way to its elite tiers, unlocking perks at thresholds such as 10,000 status points before a member reaches Atmos Silver. For a Portland regular, the relevant milestone perks are the ones that touch the curb, priority check-in and free checked bags, which start at Silver and climb from there.
04Curb To Bag Drop
Where The Car Stops,
And What The Bag Costs.
The last hundred feet of an Alaska departure are the part a chauffeur controls, and Alaska has engineered them to be fast. The airline rebuilt its PDX lobby around automated bag drop and a five-minute target from door to security, and it changed its bag fees in April 2026 in a way that rewards knowing the rules before the trunk is packed.
Alaska's bag drop is on the first aisle
The Port of Portland runs PDX check-in in four perpendicular aisles off the departures level, and Alaska's automated bag drop sits on the first aisle. A chauffeur who knows that stops the car at the door nearest it, which turns the walk from curb to bag tag into a matter of yards rather than the length of the hall.
Five minutes, lobby to security
Alaska's stated design target for the renovated PDX lobby is getting a guest from lobby into security in five minutes or less, built on iPad bag-tag stations and ID-matching automated bag drop. That target is why an Alaska departure needs less terminal buffer than most, and why the pickup can be timed to the lounge rather than the fear of a line.
What a checked bag costs in 2026
For flights booked on or after April 10, 2026, Alaska charges $45 for the first checked bag, $55 for the second and $200 for the third and up, and it dropped the old online-prepay discount, so the price is identical at the counter. First Class includes two bags up to 70 pounds each, which changes how much the trunk really has to carry.
Free-bag status changes the trunk
Atmos Silver gets one free bag, Gold two, and Platinum and Titanium three, each extending to companions on the same reservation, with priority check-in starting at Silver. Six travelers with three bags apiece fill a Sprinter, so the elite tier in the party is a real input to which vehicle dispatch sends.
Frequently Asked
Questions, Answered.
What terminal is Alaska Airlines at PDX?
Alaska flies from Concourses B and C at PDX, both behind the south security checkpoint. Concourse B, opened in December 2021, is the Horizon and regional side; Concourse C carries Alaska's mainline jets, and the airline's lounge sits in the South Concession Hall past that checkpoint. Confirm the concourse on the monitors, but the checkpoint is always the south one.
Is there an Alaska Lounge at Portland airport?
Yes, and it is new. Alaska opened a roughly 14,000-square-foot lounge with more than 230 seats on June 4, 2026, in the South Concession Hall on Level 3, past the south checkpoint that serves Concourses B and C. It replaced the two smaller lounges Alaska used to run, and its doors open at 4:30 a.m.
What is Atmos Rewards and did Alaska Mileage Plan go away?
Mileage Plan became Atmos Rewards on August 20, 2025, when Alaska folded in Hawaiian's program. Mileage Plan members kept their balances and status; the change was mostly vocabulary, with miles now called points and elite-qualifying miles called status points. Members unlock perks at milestones such as 10,000 status points on the way to Atmos Silver.
How much is a checked bag on Alaska Airlines in 2026?
For flights booked on or after April 10, 2026, Alaska charges $45 for the first checked bag, $55 for the second and $200 for the third and beyond, with no online-prepay discount, so the price is the same at the counter. First Class includes two bags up to 70 pounds, and Atmos elite tiers get one to three free bags.
How early should I leave for an Alaska flight out of PDX?
Work backward from the lounge and the checkpoint, not the flight. The Alaska Lounge does not open until 4:30 a.m., and Alaska's own PDX lobby target is five minutes from door to security once bags are dropped. For a pre-dawn departure, a pickup timed to the lounge opening beats one timed to the gate.
Is Alaska Airlines the biggest airline at Portland airport?
Yes. U.S. DOT figures for the year ending July 2025 give Alaska 30.26 percent of PDX passengers and its regional partner Horizon another 10.03 percent, a combined 40.3 percent, well ahead of Southwest at 13.61 percent and Delta at 12.10 percent. Alaska calls Portland its second-largest hub.
About the Author
Ilyas Khairiruns Marquee Chauffeur under Portland Bureau of Transportation certification held since 2018, with $1 million in commercial liability and W-2 chauffeurs on payroll. He runs more Alaska departures to the south concourses than any other airline pattern at PDX, keeps the 4:30 a.m. lounge opening and the five-minute bag-drop target as live inputs to every pre-dawn quote, and thinks the most useful thing a chauffeur can know about Portland's home airline is that the car is timed to the lounge, not the gate.
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