The $4.50 per-ticket fee that helps Sea-Tac expansion but not you
Every time you fly out of Sea-Tac, $4.50 of your ticket price goes directly to the airport. That charge, called a Passenger Facility Charge (PFC), is one of the biggest single revenue sources for airport expansion. In the past it was always heavily used for noise-mitigation programs. Today? Not so much.
The program
The PFC was created by Congress in 1990 (49 U.S.C. § 40117). Airports can charge up to $4.50 per enplaned passenger and collect it through the airlines, who then remit the funds to the airport.
But the collection and its use are separate processes. Most of the money is held for years in restricted accounts until the Port of Seattle applies for FAA authorization for use on specific, named projects.
The FAA’s Part 158 rules strictly limit that money to projects that enhance capacity, safety, or competition—or that reduce aircraft noise and mitigate its impacts on surrounding communities. Receipts are held in a restricted capital account and are later applied to construction, debt service, or matching funds for FAA Airport Improvement Program (AIP) grants.
PFCs cannot fund day-to-day operations, salaries, or unrelated development. They also cannot be diverted for any other community uses.
Running Total: $3.84 Billion and Counting
According to the FAA’s September 2025 Passenger Facility Charge report, Sea-Tac is authorized to collect $3,841,864,375 over the life of the current application — 2001 – 2043.
The Port’s audited statements show annual PFC revenues climbing steadily since the pandemic:
| Year | PFC Revenue ($ millions) | Source |
|---|---|---|
| 2021 | 72.8 | Port of Seattle ACFR 2023 |
| 2022 | 88.3 | ibid. |
| 2023 | 95.7 | ibid. |
Since inception (FAA Authorizations)
| Authorization Year | Expiration Year | Total PFC Approved ($) | Source |
|---|---|---|---|
| 1992 | — | 0 | FAA ARP PFC Historical Dataset (Sept 2025) |
| 2001 | 2043 | 3,841,864,375 | ibid. |
Where the money goes
Because FAA rules tie approval to specific project justifications, every PFC dollar is “earmarked” long before it is spent. PFC dollars have been used to fund large-scale infrastructure: the International Arrivals Facility, the North Satellite Modernization, runway and taxiway reconstruction, and long-running noise-mitigation programs for homes and schools.
The Port’s upcoming Sustainable Airport Master Plan (SAMP) also anticipates using PFC revenue for eligible portions of that multibillion-dollar expansion through at least 2032.
Two stages of FAA approval: “collection” and “use”
The PFC system has two distinct phases. An airport obtains authority to impose PFCs. This allows the airport to add up to $4.50 to each departing passenger’s ticket and build a restricted fund for eligible purposes. Collection authority can last for decades; at Sea-Tac, the current approval runs from 2001 through 2043 with a total ceiling of $3,841,864,375 (FAA PFC Monthly Report, Sept 2025).
The airport must then apply separately for authority to use those funds—sometimes called a “PFC use application.” This second approval lists specific projects, cost estimates, and justifications. The FAA reviews and either approves or disallows each project.
The process resembles a revolving grant program—one in which the Port is both the collector and the applicant. The Port continuously collects PFCs under one long running authorization, but it must still seek FAA approval every time it wants to use that balance.
Be specific
PFC approvals must be project-level, not program-level. The Port cannot simply request “$1 billion for SAMP.” Instead, the FAA requires that each sub-project have its own scope, purpose, and cost estimate. For example, within the SAMP, PFC-eligible projects will include new concourse gates (capacity), taxiway upgrades (safety), or roadway improvements (access). Noise-mitigation projects—such as insulation for homes and schools—are also eligible under a different statutory purpose. But each use case is a distinct line item in the application.
Unspent funds
The FAA allows airports to invest unspent PFC balances in interest-bearing accounts or securities consistent with federal investment standards (FAA PFC FAQs). Any interest earned must also be treated as PFC revenue—it can only be used for the same approved purposes. For large airports, like Sea-Tac, with billion-dollar potentials, those interest earnings can be substantial, effectively expanding the pool for future eligible projects.
Why It matters to communities
For most travelers, the PFC is invisible—a line item buried in ticket taxes. But for nearby communities, it has represented one of the few direct funding streams that can legally address one specific airport-related impact: noise abatement (property buyouts) or mitigation (sound insulation.)
However, the same federal oversight that protects the fund’s integrity also limits flexibility: local officials cannot repurpose PFC revenue for broader mitigations such as public-health.
The voluntary loophole
The Port collects continuously but how it uses those funds is voluntary. It decides when—and on what—to apply for FAA use authority. Sea-Tac can collect billions in PFC authority but spend as much or as little money on eligible noise projects as it chooses.
As one egregious example, when the Third Runway was built, the Port provided sound insulation to over 9.400 structures. Almost all, single family homes. However, the program left over 900 multi-family units untreated for decades — choosing not to apply for eligible grant funding until 2020 with the Accelerated Sound Insulation Program.
The Poison Pill
Like everything to do with airports, and especially the Port of Seattle, the situation is both complicated and infuriating for communities.
With the PFC, the Port has a massive fund that can provide millions in noise mitigation for communities through 2041.
But at the same time, the Part 150 program strictly limits that funding to first-time Port Packages, making it almost useless at the moment now that almost all eligible structures are (finally) being addressed. That is not the Port’s fault. Every year the Port asks us to join them in lobbying Congress to relax that standard and expand the usage to include repair/replacement. We fully agree!
However, they also add one final bit of poison that makes any such sentiments ring hollow.
The Port of Seattle has repeatedly gone on record saying that they need every dollar of the existing funds for airport expansion until at least 2032. (Remember, all the funds they sit on earn interest.) Instead, they want Congress to increase the limit on PFC fees from $4.50 to $8.00.
In other words, they advocate to increase ticket prices rather than using existing PFC funding for noise mitigation. So even if Congress were to give airports permission to apply for Port Package Updates, the Port has made no commitment to do so — unless they get even more money!