<<Disclaimer: Verify this information before applying it to your situation.>>
Don't rely on Delta for a gf meal. I was assured they have them available.
We recently returned from Reno/Tahoe. On the flight out they served me a
small chicken salad in a cup with grapes and sliced chicken with a coating on
it. Accompanying the salad was a cup of vinegar-based salad dressing and
some type of muffin. My husband ate my lunch and said the muffin was
definitely wheat-based.
On the return flight I was served a chicken salad sandwich on whole wheat
bread and also received a Sarah Lee cookie.
It really doesn't pay to rely on an airline for gf food. Eating something
containing wheat can ruin a vacation. Personally, I always eat before I
leave home. This was the first time I ordered a gf meal and results were not
very good.