SeatSmart

Delta Air Lines

Delta Air Lines (DL) is a Full-Service airline based in USA, with its main hub at Atlanta Hartsfield, a member of SkyTeam. Browse seat maps, carry-on baggage rules, and fleet information.

Delta Air Lines is the largest US carrier by revenue and consistently ranks among the most reliable, with a hub network anchored by Atlanta (the world's busiest airport). Delta is a SkyTeam member, flies a mixed Airbus and Boeing fleet, and stands out among US airlines for keeping seat-back entertainment screens (Delta Studio) on most of its domestic mainline aircraft rather than shifting entirely to streaming-only cabins.

Airline Information

  • IATA code: DL
  • Country: USA
  • Hub: Atlanta Hartsfield
  • Alliance: SkyTeam
  • Tier: Full-Service
  • Customer support: 1-800-221-1212

Cabin Classes

  • Basic Economy: The cheapest fare class — no seat selection until check-in, no changes, and boards last. Carry-on personal item only on some fares.
  • Main Cabin: Standard economy with a free carry-on bag, seat selection, and mileage earning at the full rate.
  • Delta Comfort+: 34–35 in of pitch (vs. 30–31 in Main Cabin), a dedicated overhead bin, and free alcoholic drinks on longer flights. Free for Gold Medallion+ members and eligible Delta Amex cardholders.
  • Delta Premium Select: Wide-body international upgrade with wider recline seats, upgraded dining, and amenity kits — positioned between Comfort+ and Delta One.
  • Delta One: Delta's business/first cabin. Domestic Delta One is a recliner seat; international long-haul Delta One offers fully lie-flat suites with direct aisle access on most wide-bodies.

SkyMiles Loyalty Program

Elite tiers: Silver, Gold, Platinum, and Diamond Medallion

Medallion status is earned through Medallion Qualification Dollars (MQDs) spent on Delta and partner tickets. Higher tiers unlock complimentary upgrades, free Comfort+/exit-row seating, and Sky Club access.

In-Flight Wi-Fi

Free for SkyMiles members on most domestic mainline flights

Cost: Free with SkyMiles login (as of 2024 rollout); a small number of regional and older aircraft may still charge

Delta Sync Wi-Fi runs on Viasat and T-Mobile connectivity depending on aircraft; speeds are generally strong enough for streaming on newer planes.

Pro Tips

  • Log into the Delta app or Wi-Fi portal with your SkyMiles number as soon as you board — free Wi-Fi only activates after you're recognized as a member.
  • Comfort+ and exit-row seats are the best value upgrade if you don't have status — 4-6 extra inches of pitch for a modest fee at booking.
  • Delta's A220 has a 2-3 layout with no middle seat on the left side (seats A/B) — request it specifically when flying that aircraft.
  • Set a fare alert or check the Delta app the morning of your flight — Delta releases unsold first class and Comfort+ seats for cheap upgrades close to departure.

Frequently Asked Questions

What cabin classes does Delta Air Lines offer?

Delta offers five fare/cabin tiers: Basic Economy, Main Cabin, Delta Comfort+, Delta Premium Select (wide-body international only), and Delta One (business/first). Domestic Delta One is a recliner seat, while international Delta One on most wide-bodies is a fully lie-flat suite.

How does Delta SkyMiles Medallion status work?

SkyMiles Medallion has four tiers — Silver, Gold, Platinum, and Diamond — earned by spending Medallion Qualification Dollars (MQDs) on flights. Higher tiers get complimentary upgrades to Comfort+ or Delta One (based on availability), free same-day changes, Sky Club access at Platinum and above, and priority boarding and security.

Is Wi-Fi free on Delta flights?

Yes, as of Delta's 2024 rollout, Delta Sync Wi-Fi is free for all SkyMiles members (which is free to join) on most domestic mainline flights. You need to log in with your SkyMiles number through the Delta app or Wi-Fi portal after boarding for it to activate.

What is Delta's main hub airport?

Delta's largest hub is Hartsfield-Jackson Atlanta International Airport (ATL), the world's busiest airport by passenger traffic. Delta also operates major hubs in Detroit, Minneapolis-St. Paul, Salt Lake City, New York-JFK, and Los Angeles.

Does Delta charge for checked bags?

Yes, on most domestic fares: the first checked bag is typically around $35 and the second around $45, though prices vary by route. SkyMiles Medallion members and holders of co-branded Delta American Express cards receive free checked bags.