--- title: "Airline and terminal guides · ATL Airport Guide" description: "Every ATL guide on airlines and terminals: 5 guides, each answering one question." url: "https://atlairportguide.com/guides/airlines-and-terminals/" updated: "2026-11-15" airport: "ATL" type: "guide" --- > Independent guide, not the official ATL website. All pages: https://atlairportguide.com/llms.txt # Airline and terminal guides Every ATL guide on airlines and terminals: 5 guides, each answering one question. Updated November 15, 2026 Which airlines use which terminal at ATL, and what that means for check-in, security and connections. The guides answer the terminal question for each part of the airport; each airline has its own page with its counters and gates. Looking for the listings themselves? They are on the [Airlines at ATL](https://atlairportguide.com/airlines/) page. ![A long run of airline check-in counters under sweeping orange-ribbed arches in the empty Domestic Terminal ticketing hall at Atlanta airport.](https://atlairportguide.com/images/atl/ticketing-counter-row-v17-800.webp) [American Airlines at ATL: check-in, concourse and the Admirals Club](https://atlairportguide.com/guides/american-airlines-at-atlanta-airport/) American checks in at ATL's Domestic Terminal, counters open 3 a.m. to 9 p.m. No concourse is published, so use your gate letter. Admirals Club is in T. - [Check in at the Domestic Terminal](https://atlairportguide.com/guides/american-airlines-at-atlanta-airport/#check-in-at-the-domestic-terminal) - [Which concourse](https://atlairportguide.com/guides/american-airlines-at-atlanta-airport/#which-concourse) - [The Admirals Club in Concourse T](https://atlairportguide.com/guides/american-airlines-at-atlanta-airport/#the-admirals-club-in-concourse-t) - [If something goes wrong](https://atlairportguide.com/guides/american-airlines-at-atlanta-airport/#if-something-goes-wrong) ![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-v7-800.webp) [Every airline at Atlanta airport, A to Z: which terminal to check in at](https://atlairportguide.com/guides/every-airline-at-atlanta-airport-z/) 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. - [Pick the building by where you’re going](https://atlairportguide.com/guides/every-airline-at-atlanta-airport-z/#pick-the-building-by-where-youre-going) - [Delta checks in at both buildings](https://atlairportguide.com/guides/every-airline-at-atlanta-airport-z/#delta-checks-in-at-both-buildings) - [Every airline, A to Z](https://atlairportguide.com/guides/every-airline-at-atlanta-airport-z/#every-airline-a-to-z) - [North or South: the airport doesn’t say](https://atlairportguide.com/guides/every-airline-at-atlanta-airport-z/#north-or-south-the-airport-doesnt-say) - [Check-in isn’t your gate](https://atlairportguide.com/guides/every-airline-at-atlanta-airport-z/#check-in-isnt-your-gate) - [Counter hours some airlines publish](https://atlairportguide.com/guides/every-airline-at-atlanta-airport-z/#counter-hours-some-airlines-publish) - [If you’re in the wrong building](https://atlairportguide.com/guides/every-airline-at-atlanta-airport-z/#if-youre-in-the-wrong-building) ![Self-service check-in kiosks under the clerestory windows of the North ticketing hall in the Domestic Terminal at Atlanta airport.](https://atlairportguide.com/images/atl/north-ticketing-door-n5-v16-800.webp) [Frontier, JetBlue and Alaska at Atlanta Airport](https://atlairportguide.com/guides/frontier-jetblue-alaska-at-atlanta-airport/) All three check in at ATL's Domestic Terminal. JetBlue and Alaska use the North side. Counter hours, bag cutoffs and what the airport doesn't publish. - [Frontier doesn’t say which side of the terminal](https://atlairportguide.com/guides/frontier-jetblue-alaska-at-atlanta-airport/#frontier-doesnt-say-which-side-of-the-terminal) - [JetBlue keeps two counter windows](https://atlairportguide.com/guides/frontier-jetblue-alaska-at-atlanta-airport/#jetblue-keeps-two-counter-windows) - [Alaska’s counter closes for the midday gap](https://atlairportguide.com/guides/frontier-jetblue-alaska-at-atlanta-airport/#alaskas-counter-closes-for-the-midday-gap) - [After check-in](https://atlairportguide.com/guides/frontier-jetblue-alaska-at-atlanta-airport/#after-check-in) - [Sources](https://atlairportguide.com/guides/frontier-jetblue-alaska-at-atlanta-airport/#sources) ![The gate hall of Concourse C at Atlanta airport, with a steel column, a bin, rows of dark seats and a long pale walkway.](https://atlairportguide.com/images/atl/concourse-c-gate-6-southwest-v9-800.webp) [Southwest at ATL: Domestic Terminal check-in and Concourse C gates](https://atlairportguide.com/guides/southwest-at-atlanta-airport-check-concourse/) Southwest checks in at ATL's Domestic Terminal and boards from Concourse C. Its ticket counter opens 120 minutes before the first departure of the day. - [Check in at the Domestic Terminal](https://atlairportguide.com/guides/southwest-at-atlanta-airport-check-concourse/#check-in-at-the-domestic-terminal) - [Concourse C and the ride there](https://atlairportguide.com/guides/southwest-at-atlanta-airport-check-concourse/#concourse-c-and-the-ride-there) - [After you land in Concourse C](https://atlairportguide.com/guides/southwest-at-atlanta-airport-check-concourse/#after-you-land-in-concourse-c) ![Two navy leather egg chairs around a low glass table, with a quilted banquette behind, in the United Club on Concourse T at Atlanta airport.](https://atlairportguide.com/images/atl/concourse-t-united-club-t11-v10-800.webp) [United at ATL: Domestic Terminal check-in, concourse and the United Club](https://atlairportguide.com/guides/united-at-atlanta-airport/) United checks in at ATL's Domestic Terminal and ATL lists its United Club's location as T11. Neither ATL nor United names its concourse, so use your gate letter. - [Check in at the Domestic Terminal](https://atlairportguide.com/guides/united-at-atlanta-airport/#check-in-at-the-domestic-terminal) - [Which concourse](https://atlairportguide.com/guides/united-at-atlanta-airport/#which-concourse) - [What the United Club at T11 offers](https://atlairportguide.com/guides/united-at-atlanta-airport/#what-the-united-club-at-t11-offers) - [Wheelchairs and checked mobility devices](https://atlairportguide.com/guides/united-at-atlanta-airport/#wheelchairs-and-checked-mobility-devices)