| S25 |
25 October 2025 |
End of Northern Summer Season 2025 |
| W25 |
26 October 2025 |
Start of Northern Winter Season 2025 |
| |
28 March 2026 |
End of Northern Winter Season 2025 |
| 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 |
| W26 |
13 April 2026 |
SHL Deadline for W26 |
| |
14 Apr – 30 Apr 2026 |
Period to agree Historics |
| |
30 Apr 2026 |
Confirmation of final coordination parameters and details of available capacity |
| |
07 May 2026 |
W26 Initial Submission Deadline |
| |
28 May 2026 |
SAL Deadline for W26 Schedules |
| |
09 – 11 June 2026 |
SC158 - Bangkok |
| |
15 July 2026 |
W26 IATA Slot Series Return Deadline |
| |
31 August 2026 |
W26 Historics Baseline Date |
| |
25 October 2026 |
Start of Northern Winter Season 2026 |
| |
27 March 2027 |
End of Northern Winter Season 2026 |
