A nor'easter sweeping the U.S. Northeast cancelled 253 flights and delayed 36 more at Boston Logan International Airport (BOS) on September 26, 2026, according to FlightAware data, with the disruption hitting regional carriers hardest and rolling into a second day of operations.

Cape Air and Delta Air Lines absorbed the bulk of the Logan cancellations on Saturday. FlightAware figures reported by The Boston Globe show Cape Air cancelled 115 flights at the airport and Delta cancelled 95. Cape Air went further than schedule trimming: it cancelled all flights across its North Region and is offering passengers booked on affected routes between September 25 and 28 the option to move their trips to alternative flights through October 2 at no additional fee.

The storm's reach extended well beyond Boston. On September 26 alone, FlightAware recorded 66 cancellations at Nantucket Memorial Airport (ACK) and 44 at Martha's Vineyard Airport (MVY) — both key nodes in Cape Air's regional network. Airports in New York and Philadelphia also reported disruption, though exact cancellation counts continued to shift as airlines revised their schedules.

The cancellation wave is not over. Delta said it expects a significant number of cancellations at Boston Logan on Sunday, September 27, and the carrier has warned customers directly that Sunday operations remain at risk as weather conditions evolve.

Waivers spread across carriers

Airlines moved quickly to give passengers rebooking flexibility rather than face crowds at rebooking desks. Delta's Boston weather waiver covers eligible travel to, from or through Boston between September 26 and 29, allowing changes without a change fee under the waiver's conditions.

JetBlue issued a broader Northeast waiver covering flights operated between September 25 and 27 across a nine-airport footprint: Boston, John F. Kennedy International (JFK), LaGuardia (LGA), Newark (EWR), Nantucket, Martha's Vineyard, Providence (PVD), Worcester (ORH) and Hyannis (HYA). American Airlines and United Airlines have issued waivers for selected Northeast airports and travel dates as well.

The waivers permit eligible passengers to modify bookings under each airline's individual terms. They do not mean every flight covered by the policies has been cancelled — carriers use them to steer passengers toward voluntary rebooking before operations degrade further.

Why the regional network took the hit

The concentration of cancellations at Nantucket, Martha's Vineyard and Cape Air's North Region reflects the economics of operating small aircraft in high winds. Regional carriers flying shorter sectors with lighter aircraft typically cancel earlier and in larger numbers than mainline operators, because crosswind and gust limits bite sooner and crew repositioning is harder once a schedule collapses. For Cape Air, which anchors the Hyannis-based Cape and Islands network, a multi-day North Region shutdown removes capacity that has no mainline substitute — hence the rebooking window stretching to October 2 rather than a next-day fix.

For Delta, 95 cancellations at a single hub-scale operation represent a manageable share of its Boston schedule but a compounding cost: crew rotations, aircraft repositioning and the spillover into Sunday's operation, which the carrier has already flagged for further cancellations.

The September 27 operation is still developing. Airlines continue to adjust schedules as the storm moves through the region, and further cancellations at Boston Logan and across the Northeast remain likely before normal operations resume.