CSA From , joined Dec 1969, posts, RR: Posted (11 years 11 months 2 weeks 3 days 13 hours ago) and read 1896 times:
I was checking the SAS timetable and flightindex this morning and found that all the flights southward and westward were odd: example: SK-501 CPH-LHR and that all flights northward and eastward were even flight numbers example: SK-734 CPH-SVO and SK 735 SVO-CPH, this kind of system is maybe valid for other airlines too.
Has anyone ever thought about this before?
Another example is LOT: all outbound flights from Poland have odd flight numbers, example: LO 631 WAW-SOF, and all returning flights to Poland have even flight numbers, example: LO 632 SOF-WAW.
Can anyone give me an approach why the airlines have systems like this?
Vunz From Netherlands, joined Jun 2001, 360 posts, RR: 1 Reply 1, posted (11 years 11 months 2 weeks 3 days 12 hours ago) and read 1872 times:
It's customary to have an odd outbound flight number, and the following (even) number or the return flight. For instance KL0643 AMS-JFK and KL0644 JFK-AMS. No coincidence here.
Favre From United States of America, joined Apr 2000, 595 posts, RR: 10 Reply 2, posted (11 years 11 months 2 weeks 3 days 11 hours ago) and read 1857 times:
at nwa we use odd numbers to the west and even to the east....
A330_DTW From United States of America, joined Sep 2000, 371 posts, RR: 0 Reply 3, posted (11 years 11 months 2 weeks 3 days 9 hours ago) and read 1841 times:
As Favre said, odd numbers West and even numbers East.
For the international flights, the East-bound flight number is always one number higher than its West-bound counterpart; i.e. flight NW50 DTW-CDG and return flight CDG-DTW is NW49.
AndyEastMids From United Kingdom, joined Jan 2001, 996 posts, RR: 2 Reply 4, posted (11 years 11 months 2 weeks 3 days 9 hours ago) and read 1834 times:
As I recall, IATA standard is north/west=odd, south/east=even. However, many airlines ignore this standard.
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