Odd And Even Flight Numbers?

Thu Jun 14, 2001 8:44 pm

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?
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RE: Odd And Even Flight Numbers?

Thu Jun 14, 2001 9:40 pm

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.

I'm not sure about the SK flightnumbers though.
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RE: Odd And Even Flight Numbers?

Thu Jun 14, 2001 10:48 pm

at nwa we use odd numbers to the west and even to the east....
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RE: Odd And Even Flight Numbers?

Fri Jun 15, 2001 12:12 am

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.

Flight NW12 NRT-DTW and NW11 DTW-NRT.
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RE: Odd And Even Flight Numbers?

Fri Jun 15, 2001 12:40 am

As I recall, IATA standard is north/west=odd, south/east=even. However, many airlines ignore this standard.


RE: Odd And Even Flight Numbers?

Mon Jun 18, 2001 11:21 pm

Thank's guys, have a nice day.

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