Delta

The Delta Platinum card pairs an annual companion certificate with a free checked bag and MQD boost for $350. Here’s whether that math works.

Delta Blue has no annual fee but also no free bag or companion certificate. Here’s who it actually makes sense for.

Delta Reserve Business bundles Sky Club access, guest passes, and a companion certificate into a $650 fee. Here’s whether it’s worth it.

Delta Gold Business skips the companion certificate for broader everyday earning and a free checked bag. Here’s whether the $150 fee pays off.

Delta is offering up to a 50% bonus on purchased SkyMiles through September 30, 2026 – full tier breakdown, and when buying miles actually makes sense.

Delta ticket numbers start with 006 – a 13-digit code that is different from your confirmation number. Here is what it means and when you need it.

Delta Basic Business has the same lie-flat seat as Classic, but loses lounge access after Jan 2027 and earns fewer SkyMiles (MQDs are unaffected).

A Delta Medallion member can upgrade one companion for free — they just need a SkyMiles number and to clear at the higher-tier member’s window.

Delta Premium Select Basic has the same seat as Classic but loses seat selection, free changes, upgrades, and 3 fewer SkyMiles per dollar.