As of 2026, five airlines fly out of Piedmont Triad International Airport (GSO): American Airlines, Delta Air Lines, United Airlines, Allegiant Air, and Breeze Airways. American and Delta operate from Concourse A, while United, Allegiant, and Breeze operate from Concourse B. Together they serve around 14–16 nonstop destinations, with Charlotte, Atlanta, and Dallas/Fort Worth among the busiest routes.
Which Airlines Fly Out of GSO? A Terminal & Airline Guide
If you’re planning a trip through Piedmont Triad International Airport, one of the first things you’ll want to know is which airlines actually fly there — and, since airline lineups change, which ones are current. This guide covers the airlines flying from GSO as of 2026, which concourse each uses, where they fly, and how to navigate the terminal. (For the full airport rundown, see our complete Piedmont Triad Airport guide.)
Airlines Currently Flying From GSO (2026)
Five passenger airlines operate scheduled service at Greensboro’s airport:
- American Airlines — the largest carrier at GSO by number of departures, with the most nonstop routes
- Delta Air Lines — the second-largest operator at the airport
- United Airlines — major-hub connectivity via its network
- Allegiant Air — the low-cost leisure carrier, serving destinations like Orlando Sanford
- Breeze Airways — the newest addition, which began GSO service in June 2025 with routes including Hartford and Orlando
A note on accuracy: some older travel websites still list Spirit Airlines at GSO, but Spirit discontinued its Greensboro service in 2021 and no longer flies from the airport. If you’re comparing fares, you won’t find Spirit flights at GSO today. Similarly, while GSO’s terminal is equipped to handle international processing, there are currently no scheduled nonstop international passenger flights — all scheduled service is domestic.
Which Concourse Does Each Airline Use?
GSO has one main terminal with two concourses — Concourse A and Concourse B — connected by a short walkway after security. Here’s how the airlines split:
| Concourse | Airlines | Gates |
|---|---|---|
| Concourse A | American Airlines, Delta Air Lines | ~10 gates |
| Concourse B | United Airlines, Allegiant Air, Breeze Airways | ~14 gates |
Here’s the reassuring part: because both concourses connect through the central terminal after you clear security, you can reach any gate regardless of which checkpoint you use. The concourse split matters mainly for knowing roughly where your gate is — not for navigation, since the whole terminal is walkable in minutes.
The simple version, as a local frequent flyer put it: if you’re flying American or Delta, you’re in Concourse A; if you’re flying United, Allegiant, or Breeze, you’re in Concourse B.
Where Can You Fly Nonstop From GSO?
GSO offers roughly 14–16 nonstop destinations, weighted toward major connecting hubs and popular leisure spots. The most-served routes include:
- Charlotte (CLT) — the single busiest route from GSO, with the most weekly departures (American)
- Atlanta (ATL) — Delta’s primary hub connection
- Dallas/Fort Worth (DFW) — American; also the longest nonstop from GSO at around 3 hours 15 minutes
- Chicago, Houston, Detroit, New York, Washington D.C., Philadelphia — major hub connections across American, Delta, and United
- Orlando (and Orlando Sanford) — leisure routes via Allegiant and Breeze
- Hartford — a Breeze route added in 2025
Because so many of these are hub connections (Charlotte, Atlanta, DFW, Chicago), GSO effectively connects the Triad to the entire country — you’ll typically reach most destinations with one stop even where there’s no nonstop.
A practical planning note: leisure routes (particularly Allegiant and Breeze services to Florida) can be seasonal or operate only a few days per week, so a route that exists in spring may not run year-round, and vice versa. Always check current schedules directly with the airline when planning around a specific date. The legacy carriers (American, Delta, United) generally offer the most consistent daily frequency, since their GSO flights feed into their national hub networks.
A Closer Look at Each GSO Airline
American Airlines is the anchor carrier at GSO, operating the most departures of any airline at the airport — around 157 scheduled takeoffs a week. Its strength is hub connectivity, with frequent nonstops to Charlotte (the single busiest GSO route) plus Dallas/Fort Worth, Philadelphia, and Chicago. Most American flights use regional jets like the Bombardier CRJ and Embraer 170/190 series. It operates from Concourse A.
Delta Air Lines is the second-largest operator at GSO, built around its Atlanta hub. Delta’s Atlanta connection is one of the most useful routes from Greensboro, since ATL connects onward to nearly everywhere Delta flies domestically and internationally. Delta also operates from Concourse A.
United Airlines rounds out the “big three” legacy carriers at GSO, connecting the Triad through its major hubs (including Houston, Chicago, and Washington). United operates from Concourse B.
Allegiant Air is GSO’s established low-cost leisure carrier. Rather than hub connections, Allegiant flies point-to-point to vacation destinations — Orlando Sanford being a signature route. Allegiant typically flies a few days a week rather than daily, so check its schedule carefully when planning. It operates from Concourse B.
Breeze Airways is the newest carrier, having launched GSO service in June 2025. Breeze, a newer low-cost airline, added routes including Hartford and Orlando, expanding GSO’s leisure and East Coast connectivity. It operates from Concourse B alongside United and Allegiant.
How to Navigate the GSO Terminal
GSO’s single-terminal, two-level design makes it one of the easiest airports in North Carolina to move through:
- Level 2 (upper): Departures — ticketing, check-in, bag drop, and two security checkpoints (one near Concourse A, one near Concourse B), both with TSA PreCheck lanes.
- Level 1 (lower): Arrivals — baggage claim, rental cars, and ground transportation.
After clearing security on Level 2, you enter a central hub with shops and dining, then branch to Concourse A or B. The walk end-to-end is only about 5–7 minutes, so even if you land at one concourse and need something at the other, it’s a short trip. For arriving passengers, everyone comes down to the same Level 1 baggage claim regardless of airline — see our GSO pickup guide for how that works.
Tips for Flying From GSO
A few things worth knowing whichever airline you’re on:
- Check in online 24 hours ahead and use a mobile boarding pass to skip the counter.
- Confirm your concourse from your boarding pass — though with GSO’s small size, it barely affects your walk.
- Arrive 2 hours before domestic flights (there are no scheduled international flights, so the 3-hour international rule generally won’t apply). See our guide on how early to arrive at GSO.
- Use either security checkpoint — both reach every gate, so pick the shorter line.
- Book your ride in advance — GSO’s smaller size means fewer rideshares circulating, so a prearranged pickup is often smoother.
Getting To and From GSO
However you’re flying, the trip starts and ends with getting to the airport. A prearranged GSO airport car service drops you right at the departures curb and meets you curbside on arrival, with a chauffeur tracking your flight regardless of which airline or concourse you’re using. Krownkey Unlimited provides flat-rate black car service across Greensboro, Winston-Salem, and High Point — one flat rate, no surge, whether you’re on an early American departure or a late Breeze arrival.
For more on the airport itself, see our GSO parking guide and full Piedmont Triad Airport guide.
Krownkey Unlimited provides flat-rate car service to and from Piedmont Triad International Airport, with real-time flight tracking and curbside service across the Triad. Reserve your ride → or call (910) 248-4652, available 24/7.
Note: Airline lineups and routes change frequently. Confirm current airlines and destinations on the airport’s official website or your airline before booking.