Delta Air Lines was HIA’s fastest-growing airline in 2025—serving 310,884 total passengers—up nearly 21% compared to 2024.

During the first half of 2026, expect Delta’s growth to continue as total seats for sale are up 14% compared to the first six months of 2025. This growth is due to a combination of larger aircraft and more daily flights.

Atlanta

Most Delta flights between Harrisburg and Atlanta are flown using 110-seat Boeing 717 aircraft featuring Main Cabin, Delta Comfort+, and First-Class seating. On busier travel days this spring, Delta will fly larger 132-seat Airbus A319 and 160-seat Boeing 737 aircraft. Beginning June 7, Delta will add a fourth daily flight from Harrisburg to their largest hub. This summer, Delta will average more than 950 daily departures from Atlanta to 203 destinations around the world.

Detroit

Delta flights between Harrisburg and Detroit are flown using a combination of 65-, 70-, and 76-seat CRJ-700 and CRJ-900 aircraft featuring Main Cabin, Delta Comfort+, and First-Class seating. Beginning May 21, Delta will add a third daily flight from Harrisburg to their third-largest hub. This summer, Delta will average more than 350 daily departures from Detroit to 110 destinations around the world.

With seven departures on most days of the week, Delta offers central PA business and leisure travelers a convenient flight schedule from closer to home. To check fares and book your flights, visit www.delta.com.