Which Airlines Does ScoreFlights Track?

We track airlines that carry at least half a percent of U.S. domestic air travelers. That's the federal government's own bar for which carriers get individually tracked for on-time performance and other consumer protections. Right now that's Alaska, Allegiant, American, Delta, Frontier, JetBlue, Southwest, and United: eight carriers covering the large majority of U.S. domestic seat capacity.

What about smaller or newer airlines? Carriers below that same reporting threshold don't have the on-time and reliability data we'd need to score them fairly. Rather than give an incomplete picture, we leave them out until they grow large enough to be tracked the same way as everyone else.

What happened to Hawaiian? Hawaiian was on this roster until September 2026. It came off for a specific reason: you can no longer book a flight and get a Hawaiian flight number. Alaska acquired Hawaiian in 2024, the two received a single FAA operating certificate on October 29, 2025, and on April 22, 2026 the HA code was retired outright. What used to sell as HA865 now sells as AS865.

That's the test we apply: if a traveler can't book the carrier and receive a flight number under its own code, we don't list it as a separate airline. The federal data agrees independently — the Bureau of Transportation Statistics closed Hawaiian's carrier record with a final date of December 31, 2025, and Hawaiian does not appear in any 2026 month of on-time performance filings.

You can still fly Hawaiian. The brand, the aircraft, the crews and the inter-island network are all still there. What changed is the code on your ticket: you'll book an Alaska flight number and may well fly a Hawaiian-painted aircraft. Nothing was dropped from our coverage when Hawaiian left the roster — that flying is still counted, it just arrives inside Alaska's numbers now.

One caveat when reading Alaska's stats. Because Hawaiian's flying folded into Alaska's reporting during 2026, a trailing-12-month view of Alaska currently blends two different operations: pre-merger Alaska, plus widebody Pacific and inter-island flying that used to report separately. It's accurate — those really are Alaska flights now — but it's worth knowing why Alaska's route mix looks broader than it did a year ago. This settles on its own as the window rolls forward.

See the full airline policy comparison for baggage fees, change policies, and basic economy restrictions across the roster, or read more about the scoring methodology for a deeper look at how each airline's data feeds into the score.