--- title: "Every airline at Atlanta airport, A to Z: where to check in" description: "Which terminal ATL lists for 26 of its 27 airlines, A to Z: Domestic or International Terminal, with Delta at both, plus the phone number ATL lists for each." url: "https://atlairportguide.com/guides/every-airline-at-atlanta-airport-z/" updated: "2026-11-15" airport: "ATL" type: "guide" --- > Independent guide, not the official ATL website. All pages: https://atlairportguide.com/llms.txt # Every airline at Atlanta airport, A to Z: which terminal to check in at Which terminal ATL lists for 26 of its 27 airlines, A to Z: Domestic or International Terminal, with Delta at both, plus the phone number ATL lists for each. Updated November 15, 2026 ![The wide check-in hall of the International Terminal at Atlanta airport, with winged canopies over the counters and blue light ribbons on the ceiling.](https://atlairportguide.com/images/atl/south-ticketing-hall-v7.webp) International Terminal check-in hall Atlanta checks you in at one of two buildings. ATL says to use the Domestic Terminal for flights within the United States and the Maynard H. Jackson Jr. International Terminal for flights outside the country. Delta is the one airline the airport lists at both. ## Pick the building by where you’re going That rule comes from ATL’s maps page, which also tells you to contact your airline for specific check-in requirements. Treat your airline as the final word. That matters most on a ticket that mixes the two, such as a domestic first leg feeding an international flight, which the maps page doesn’t address. Put the right address in your maps app. The Domestic Terminal is at 6000 North Terminal Parkway, Atlanta, GA 30320. The International Terminal is at 2600 Maynard H. Jackson Jr. Blvd., Atlanta, GA 30354. It has its own entrance, separate from the Domestic Terminal, reached from Interstate 75 at Exit 239, and ATL says departing international passengers should be dropped off on the departures level. ## Delta checks in at both buildings The airport’s directory lists Delta check-in at both the Domestic Terminal and the International Terminal. It also lists a Delta curbside check-in at the Domestic Terminal. ## Every airline, A to Z At the International Terminal, check-in is on the departures level, and MARTA’s page says some airlines check international flights in at the Domestic Terminal. The airport’s directory and terminal map name one building for each airline they list, except Delta. ATL’s maps page says passengers flying outside the United States should check in at the International Terminal, so for a flight abroad on a Domestic Terminal airline, ask the airline which building to use. The phone numbers are the ones the airport prints on its airlines page. | Airline | Check-in | Phone on ATL’s list | | --- | --- | --- | | AeroMexico | International Terminal | (800) 237-6639 | | Air Canada | International Terminal | (888) 247-2262 | | Air France | International Terminal | (800) 237-2747 | | Alaska | Domestic Terminal | (800) 252-7522 | | American | Domestic Terminal | (800) 433-7300 | | Avelo | Domestic Terminal | (346) 616-9500 | | British Airways | International Terminal | (800) 247-9297 | | Copa | International Terminal | (800) 359-2672 | | Delta | Domestic Terminal and International Terminal | (800) 221-1212 | | Denver Air Connection | Domestic Terminal | (866) 373-8513 | | Ethiopian | International Terminal | (800) 445-2733 | | Etihad | International Terminal | (914) 303-8393 | | Frontier | Domestic Terminal | (800) 432-1359 | | JetBlue | Domestic Terminal | (800) 538-2583 | | KLM | International Terminal | (800) 618-0104 | | Korean Air | International Terminal | (800) 438-5000 | | LATAM | International Terminal | (866) 435-9526 | | Lufthansa | International Terminal | (800) 645-3880 | | Qatar Airways | International Terminal | (877) 777-2827 | | Scandinavian Airlines | International Terminal | (800) 221-2350 | | Southern Airways Express | ATL lists no check-in building. Southern’s own page: north domestic side, door N3 | (800) 329-0485 | | Southwest | Domestic Terminal | (800) 435-9792 | | Sun Country | Domestic Terminal | (651) 905-2737 | | Turkish Airlines | International Terminal | (800) 874-8875 | | United | Domestic Terminal | (800) 864-8331 | | Virgin Atlantic | International Terminal | (877) 359-8474 | | WestJet | International Terminal | (888) 937-8538 | Southern Airways Express is on the airport’s airline page, but neither the directory nor the map says where it checks in. Southern’s own FAQ puts its counter next to Frontier on the north domestic side, through door N3, with every Atlanta flight at Gate E37 on Concourse E. Southern’s own destination list leaves Atlanta out and its FAQ gives no Atlanta check-in times, so confirm any Atlanta route with Southern first. An airline missing from that page isn’t in the table either. ## North or South: the airport doesn’t say The Domestic Terminal has a North side and a South side, and each has its own [security checkpoint](https://atlairportguide.com/security/). Our [flights page](https://atlairportguide.com/flights/) links each airline’s page with its check-in counters and gates, but shows no live gates. The airport’s directory lists a North and a South ticketing and check-in area, then names only the building for each airline. Four airline pages name a side. JetBlue’s own Atlanta page puts it at the “North Terminal Domestic”, Alaska’s puts its counter in the North Terminal at door N-5, Denver Air Connection’s puts its counter on the North side between Southwest and Alaska, and Southern’s puts it next to Frontier, through door N3. For every other domestic airline, ask the airline which side it uses before you go. ## Check-in isn’t your gate You check in at a terminal and fly from a concourse. Concourse T joins the Domestic Terminal, and Concourse F joins the International Terminal. Concourses A to E are separate buildings out on the airfield, reached by the underground Plane Train or, ATL’s FAQ says, the pedestrian walkway. The airport’s directory doesn’t say which concourse any airline’s flights leave from. It does place some airline facilities. Delta Help Desks are on Concourses A, B, C, E and F. Delta Sky Clubs are on Concourses T, A, B, C, D, E and F. The United Club and an Admirals Club are both on Concourse T. Those are facilities, not gate assignments, and our [lounges page](https://atlairportguide.com/lounges/) lists each lounge. Some airlines can be placed on a concourse anyway. Southwest’s airport page gives Concourse C, gates C1 to C7, C9, C10, C12 to C17 and C20 to C22. Alaska’s Atlanta page prints a gate location of E40, which is Concourse E. Frontier flies from Concourse E, Denver Air Connection from Concourse T and Etihad from Concourse F. Qatar Airways checks in at International Departures in the International Terminal. The airport publishes no concourse for any airline, and its flight search says to confirm gate assignments and schedule changes directly with your airline. Our [terminals page](https://atlairportguide.com/terminals/) shows each concourse. ## Counter hours some airlines publish Alaska, American, Southwest and JetBlue publish Atlanta counter details on their own pages, and the airport’s directory adds Denver Air Connection’s. - Alaska’s ticket counter is in the North Terminal at door N-5, positions 31 and 32. It’s open daily 3:30 a.m. to 9:30 a.m. and 12:15 p.m. to 8 p.m. - American’s ticket counters are in the Main Terminal, open daily 3 a.m. to 9 p.m. - JetBlue’s ticket counter is open 3:30 a.m. to noon and 2 p.m. to 10 p.m., so it’s closed from noon to 2 p.m. JetBlue recommends arriving 2 hours before departure. - Southwest’s ticket counter opens 120 minutes before the first departing flight, any day of the week. It suggests arriving 120 minutes before both domestic and international flights and calls those times approximate. A note at the top of Southwest’s airport information page, covering every Southwest airport, says international passengers must verify their passport with an agent or kiosk at the ticket counter at least 60 minutes before departure. The airport’s directory lists Denver Air Connection’s counter hours by day: | Day | Counter hours | | --- | --- | | Monday | 8:30 a.m. to 4:30 p.m. | | Tuesday | 8:30 to 11:30 a.m. | | Wednesday | 12:30 to 4:30 p.m. | | Thursday to Sunday | 8:30 a.m. to 4:30 p.m. | ## If you’re in the wrong building A free shuttle bus links the two terminals. The shuttle runs from the curb outside the International Terminal to the west end of the Domestic Terminal, and back from outside Domestic baggage claim. The airport says the Plane Train also runs from the International Terminal to the Domestic Terminal. ATL’s maps page gives no hours or frequency for it, but its ground transportation page says the terminal-to-terminal shuttles run approximately every 15 minutes. That page puts Domestic pickup in the Ground Transportation Center and West Curb area, through door W-1 or W-2, and International pickup on the arrivals level between doors A1 and A2. Allow for the wait and the ride before you plan a tight connection between the buildings. Our [International Terminal shuttle page](https://atlairportguide.com/transport/international-terminal-shuttle/) has the stop details. MARTA rail ends at the Domestic Terminal. MARTA’s page says some airlines let you check in for an international flight at the Domestic Terminal. If yours does, MARTA says to ride the Plane Train to the International Terminal at Concourse F. If it doesn’t, take the free shuttle from outside Domestic baggage claim. The [MARTA rail page](https://atlairportguide.com/transport/marta-rail/) has the details. ### Sources - Our [terminals page](https://atlairportguide.com/terminals/), [security page](https://atlairportguide.com/security/), [lounges page](https://atlairportguide.com/lounges/), [International Terminal shuttle page](https://atlairportguide.com/transport/international-terminal-shuttle/), [MARTA rail page](https://atlairportguide.com/transport/marta-rail/) and the airline pages linked in the table - ATL’s airlines page - ATL’s maps page and ground transportation page - ATL’s flight search page - Alaska’s Atlanta page - American’s Atlanta airport page - Southwest’s airport information page - JetBlue’s Atlanta page