| W24 |
29 March 2025 |
End of Northern Winter Season 2024 |
| S25 |
30 March 2025 |
Start of Northern Summer Season 2025 |
| |
25 October 2025 |
End of Northern Summer Season 2025 |
| W25 |
21 April 2025 |
SHL Deadline for W25 |
| |
22 Apr – 08 May 2025 |
Period to agree Historics |
| |
08 May 2025 |
Confirmation of final coordination parameters and details of available capacity |
| |
15 May 2025 |
W25 Initial Submission Deadline |
| |
05 June 2025 |
SAL Deadline for W25 Schedules |
| |
17 – 19 June 2025 |
SC156 - Vancouver |
| |
15 July 2025 |
W25 IATA Slot Series Return Deadline |
| |
31 August 2025 |
W25 Historics Baseline Date |
| |
26 October 2025 |
Start of Northern Winter Season 2025 |
| |
28 March 2026 |
End of Northern Winter Season 2026 |
| S26 |
15 September 2025 |
SHL Deadline for S26 |
| |
16 Sep – 02 Oct 2025 |
Period to agree Historics |
| |
02 October 2025 |
Confirmation of final coordination parameters and details of available capacity |
| |
09 October 2025 |
S26 Initial Submission Deadline |
| |
06 November 2025 |
SAL Deadline for S26 Schedules |
| |
18 – 20 November 2025 |
SC157 - Lisbon |
| |
15 December 2025 |
S26 IATA Slot Series Return Deadline |
| |
19 - 21 January 2026 |
SOM - Rome |
| |
31 January 2026 |
S26 Historics Baseline Date |
| |
29 March 2026 |
Start of Northern Summer Season 2026 |
| |
24 October 2026 |
End of Northern Summer Season 2026 |
