Dublin Airport Passenger Cap Limits JetBlue and United Slots

Several airlines, including US-based JetBlue and United Airlines, have been denied the requested slots at Dublin Airport (DUB) for the upcoming winter season due to an imposed passenger cap that limits the airport's capacity.

According to the slot coordination report for the winter 2024/2025 International Air Transport Association (IATA) season, running from October 27, 2024, to March 29, 2025, Dublin Airport will see a reduction of 792,952 seats compared to the previous winter season. This will result in 4,578 fewer flight movements, significantly affecting the capacity of flights to and from the Irish capital.

Ryanair will hold the largest share of slots at DUB with 49.9%, followed by Aer Lingus at 31.7%, and Emerald Airlines at 12%. The Irish Aviation Authority (IAA) cited a planning permission condition for Terminal 2, which restricts the combined capacity of Terminals 1 and 2 to 32 million passengers annually, as the reason for this passenger cap. The capacity declaration for the summer 2025 season has not yet been published.

In addition to reduced capacity, airlines lost a total of 4,580 historic slots—slots that could have been used if at least 80% were utilized in the previous season. Significant losses were noted for airBaltic, which lost all its slots, and for Aer Lingus, Emerald Airlines, and Ryanair, which lost 1,065, 2,124, and 323 slots, respectively.

Despite some airlines aiming to expand their operations at DUB, only 2.9% of the 16,593 new slot requests were granted. Among these, DHL Air UK received 176 slots, FedEx received 44, Lufthansa 16, RVL Aviation 88, and UPS Airlines 156.

JetBlue and United Airlines were notably affected by the cap. JetBlue, which had introduced summer seasonal flights to DUB in March 2024, received none of the 144 requested slots for the winter season. United Airlines, which sought an additional 74 slots, also received none but retained its existing 542 slots. In contrast, American Airlines and Delta Air Lines will operate with 616 and 592 approved flight movements, respectively.

This limitation on slots is expected to impact the growth plans of several airlines at Dublin Airport and may affect passenger travel options during the winter season.