Old May 20, 19, 11:55 am
Join Date: May 2009
Location: Seattle, WA
Programs: DL Diamond 1MM, Starlux Insighter, Bonvoy™️ Gold, Hilton Gold, Hertz PC, Moderna 2 Dose
Posts: 3,738
Yes, this should earn 40% MQD on Delta.

Note that some people have encountered problems with I booking class, but Q as the first letter of the fare basis code in the past; the automatic posting is always correct, but when flights don't post automatically and they have to e-mail Delta with incomplete receipts (discussion in this thread: Aeromexico Fare Basis ), incorrect crediting can result.

But this itinerary has I in both the booking class and the first letter of the fare basis code, so you should be totally fine on this sale fare. Q only appears in the fare construction line, which isn't checked in the crediting process.

Happy flying!
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