No. DL is the only airline that does checkin at both international and domestic. DL may ground handle for AF, but checkin will need to be done at an AF checkin counter, which is only in international.

I have never waited in security more than 5 minutes in the international terminal. They do have PreCheck over there so the only thing you would be missing out on would be Clear. All in all, probably wouldn't be much of a time savings.

I'm guessing OP is arriving via MARTA or airtrain and would like to avoid the shuttle to F

Yep, I am getting into ATL domestic terminal on an earlier flight that day on a carrier whose name shall not be said out loud :) . I guess i'll just plan on taking the shuttle to transfer to F.
Thank you guys for the quick response.

Well, if you're there already and the line isn't long, you might give it a try. I don't think it will work but you might get an agent that will shove it through.

If you could carry-on only it is a lot easier as you can exit the first flight at the international terminal. The groundside shuttle is likely 30 minutes or so.

I could suggest trying to interline the bags, but I assume the "carrier not to be named" allows bags to fly free, but never on other airlines :-)

Question, If OP already has the AF BP, any chance he can take that to the baggage drop-off?

Just did this today on the way to the Bahamas on DL and can confirm it went great; checked bags and everything. Saved me an extra shuttle ride and a bunch of time since the Hyatt only drops off at domestic.

The above post and others post lead me to believe the answer is yes but asking to confirm as I'll have an overnight layover at ATL on an itinerary (SAT-ATL-SXM). This is a layover, not a mult-city or separate tickets, if that matters. I will already be checked in for the international leg when I check-in in ATL but will be short-checking bags for the overnight layover in ATL and then re-dropping/re-tagging bags the next morning for the international flight to SXM. Based on what I've read above, I should be able to do this at the "Domestic" terminal versus having to go to the international terminal, which would be convenient since I'm guessing most hotels, especially on the West Side of the airport, only drop off at the Domestic terminal which would then mean having to take the shuttle to the Int'l terminal which sounds like it's not exactly time-efficient. Is this correct? Will I be okay going to the Domestic terminal and dropping off my bags for the flight to SXM there in the morning?

Based on my experiences, that should work great. I personally give myself at least 10-15min of breathing room when doing stuff like this just in case they change policies or something. Best case I just spend it in the SkyClub or at One Flew South.

As long as the carrier is DL, the answer is you can checkin at either end.

Opening this up again for a question for the Hartsfield airport in Atlanta.

Flying from Atlanta to Paris. Will be taking Marta to get to the airport.

I booked a cash rate via Delta as I'm a Gold Medallion. Added an infant to this ticket as a lap baby.
I booked my wife's ticket on points using Air France.

Can I check all of us using the Delta counter in domestic? That way, I can use the Priority line for Delta as well as not go over to the international terminal.

It's not obvious whether you are flying Delta or Air France.

If you are flying Delta, you can check in at the domestic terminal.

If you are flying Air France, you'll have to take the landside bus to the international terminal to check in at the Air France counter.

I don't think it matters which airline they're on. I believe DL can check in all the Skyteam tickets. But depending on the time of day, if you don't have status to use the Priority counters, it might actually be faster to check in at Intl. There have evidently been some massive lines in ATL recently.

DL may ground handle AF/KL, but you're checked in via AF/KL systems. At least last time I asked, must checkin at international for AF/KL.