Oakland International Airport (OAK) has long served as a practical alternative to the crowded terminals across the bay at San Francisco International Airport. For decades, travelers looking to avoid SFO’s congestion found Oakland to be a convenient gateway into the San Francisco Bay Area. Yet in recent years, the airport has faced a steady erosion of airline service, raising uncomfortable questions about its long-term competitiveness. The latest blow comes from Allegiant Air, which has confirmed that it will terminate its remaining Oakland operations in May, marking the end of a 17-year presence at the airport.
The decision is not an isolated development but part of a broader trend affecting the facility. Multiple airlines have quietly withdrawn routes or eliminated service altogether, leaving Oakland with fewer departures and a shrinking list of carriers. For an airport that once positioned itself as a low-cost alternative hub for budget airlines, the departure of yet another ultra-low-cost carrier underscores the challenges it now faces in retaining airline partnerships.
Allegiant’s exit also symbolizes a shift in how carriers are evaluating secondary airports across the United States. Rising operating costs, changing demand patterns, and network realignments have pushed some airlines to consolidate operations elsewhere, leaving airports like Oakland struggling to maintain the traffic levels they once enjoyed.
Allegiant Air Ends Its Final Oakland Route
The final chapter of Allegiant Air’s operations in Oakland will close on May 25, when the airline discontinues its remaining service between Oakland International Airport and Bellingham International Airport (BLI) in Washington State. The change was revealed through updated scheduling data filed by the carrier, which also confirmed the cancellation of previously planned seasonal flights between Oakland and Kalispell, Montana (FCA).
For passengers who relied on the Bellingham connection, the news came as a disappointment. The route had long been one of Allegiant’s signature services from Oakland, linking the Bay Area to the Pacific Northwest with the airline’s characteristic low-fare model. According to airport officials in Bellingham, the flight historically performed well, making its suspension somewhat surprising despite the broader industry changes.
Matt Rodriguez, Director of Aviation at Bellingham International Airport, acknowledged the setback while noting the airline’s gradual withdrawal from Oakland in recent months. As Allegiant trimmed routes across its network, the Bellingham connection became the final surviving link between the airline and Oakland. Once that service ends, Allegiant will no longer operate any scheduled flights at the airport.
A Growing List of Airline Departures
Allegiant’s departure is only the latest sign of the pressure facing Oakland International Airport. Data from aviation analytics company Cirium shows that scheduled departures from the airport have dropped significantly, with traffic falling roughly 14 percent year-over-year in recent comparisons. In June alone, Oakland recorded 2,966 scheduled departures, compared with 3,459 during the same month the previous year.
Several airlines have already stepped away from the airport during the past two years. In 2024, Oakland lost service from Avianca, Azores Airlines, and Contour Aviation. Each of those airlines operated relatively limited schedules, yet their departures collectively reduced the airport’s network diversity.
Avianca’s presence, for example, included a short-lived connection between Oakland and San Salvador International Airport, operated with Airbus A320 aircraft. Meanwhile, Azores Airlines briefly linked Oakland with Terceira in the Azores, operating wide-body Airbus A330 aircraft on seasonal flights. Contour Aviation served the niche regional route between Oakland and Crescent City using Embraer regional jets.
The trend continued into 2025, when Sun Country Airlines ended its Oakland operations after only a handful of annual departures. However, the most impactful loss came when Spirit Airlines significantly scaled back and eventually withdrew from the airport. Spirit had previously been one of Oakland’s largest ultra-low-cost operators, flying thousands of annual departures before dramatically cutting capacity.
The Rise and Decline of Allegiant’s Oakland Presence
Allegiant Air’s relationship with Oakland International Airport dates back to February 2009, when the airline launched its first route from the airport to Bellingham. The service represented Allegiant’s typical strategy: connecting underserved leisure markets with affordable nonstop flights. Just a few months later, the airline added a second destination, Eugene, Oregon, expanding its footprint in Northern California.
During its early years at Oakland, Allegiant’s operations grew steadily. The airline operated 191 departures in 2009, a figure that rose to 266 in 2010 and 286 in 2011 as demand increased. By 2012, the carrier had expanded its route network enough to push annual departures past 1,000 flights, demonstrating the potential of Oakland as a base for low-cost leisure travel.
The growth continued sporadically throughout the decade, with Allegiant reaching another operational peak in 2017, when it recorded 1,063 departures from the airport in a single year. Those flights connected Bay Area travelers to smaller destinations across the western United States, reinforcing Oakland’s role as a secondary hub for low-cost travel.
However, the years that followed brought a gradual contraction. Route reductions, shifting airline strategies, and changing passenger demand slowly chipped away at the airline’s schedule. By the mid-2020s, Allegiant’s once-robust presence had been reduced to just a single route.
What Allegiant’s Departure Means for Oakland
The end of Allegiant’s Oakland service closes a notable chapter in the airport’s history. After nearly two decades of operations, the airline’s withdrawal highlights the broader pressures facing secondary airports that once thrived on low-cost carrier traffic.
Oakland still benefits from its strategic location in the San Francisco Bay Area, as well as its accessibility for travelers in the East Bay. Yet the airport now faces the challenge of rebuilding airline partnerships and attracting new routes in an increasingly competitive aviation landscape. Whether Oakland can reverse its recent decline will depend on its ability to adapt to changing airline strategies and passenger expectations in the years ahead.
