NEE, helaas;
Here are some reasons which may not allow you to check-in on delta.com.:
- No seats assigned
- Schedule changes (voluntary or involuntary)
- Upgraded itineraries (which have not been reissued)
- Passenger's SkyMiles account not added to the itinerary
- Not applicable to international travel
- Credit card presentation for purchases made within 5 days of departure
- Codeshare flights
- Special Service Request