Here is what I got from Delta.
Thank you for contacting Delta Air Lines regarding your upcoming travel.
To let you know, Delta allows perishable items (both edible and
non-edible) onboard as part of your carry-on baggage allowance as long as there is no violation of agricultural restrictions for the destination country.
Perishable items include:
- Fresh or frozen foods, fruits, and vegetables
- Meats, fish, poultry, or bakery products
- Flowers of varying sorts including cut flowers, floral displays, and vegetable plants
If the item does not fit within our size or weight restrictions for carry-on baggage, we will accept the item within your checked baggage allowance once a limited liability release form has been completed.
Delta will not accept liability of any perishable item that spoils or goes bad during its journey in cargo.