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Thread: Consolidated DL flight numbering thread (including 1xxx/2xxx/7xxx/8xxx/9xxx etc.
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Old Jul 17, 2016 | 5:39 pm
  #33  
gooselee
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Originally Posted by BumpMeVoucherMeATL
Just a curious question about Delta flight numbers - does anyone understand the logic behind Delta flight numbers and if certain ranges mean certain things? I'm curious to know if certain ranges indicate connection carriers, if certain ranges indicate transcon or international. Is there any rhyme or reason?
There is an actual breakdown out there somewhere, but generally yes, there is a taxonomy.

IIRC the 5000s are all DL connection flights. 9000s are charters. Some other 4-digit range is reserved for code shares (DL marketed but operated by a partner).

In general the most "important" intl flights get lower flight numbers. I think all two-digit and many three-digit numbers are intl?
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