Wondering about the flight time from Atlanta to Houston? The trip from Hartsfield-Jackson Atlanta International Airport (ATL) to George Bush Intercontinental Airport (IAH) will take you a little over 2 hours. Read on to find out what to expect along the way. This route is part of a larger flight-time guide covering major routes between cities.
Flight Duration and Distance
| Average Flight Time | 2 hours 7 minutes |
| Shortest flight recorded | ~ 1 hour 50 minutes |
| Longest direct flight | ~ 2 hours 20 minutes |
| Flight distance | 689 miles / 1,108 km |
| Arrival airport | George Bush Intercontinental (IAH) |
| Departure airport | Hartsfield-Jackson Atlanta (ATL) |
| Popular airlines | Delta, United, Southwest, Spirit |
While the gate-to-gate time averages just over two hours, actual airborne time is often 10–20 minutes shorter depending on weather and air traffic.
Airline Options and Terminals
Both Delta Air Lines and United Airlines offer frequent nonstop service between ATL and IAH. Delta flights typically depart from ATL’s South Terminal, while United operates from the North Terminal. If you’re flying into Houston, United often gets preferred gates at IAH due to its hub status.
Southwest Airlines also flies this route, but lands at William P. Hobby Airport (HOU), located south of downtown Houston. If you’re looking for budget-friendly options, Southwest and Spirit Airlines offer competitive fares—just be sure to check which Houston airport you’re flying into.
Travel Tips
Earliest flights: United departs ATL at 7:00 AM, arriving at IAH by 8:05 AM. Delta follows closely with a 7:05 AM departure, landing at 8:12 AM.
Return flights: Delta offers a 6:00 AM departure from IAH, arriving in ATL at 9:05 AM.
Aircraft type: Most flights use Boeing 737s or Airbus A320s, so flight times are consistent across carriers.
Booking advice: Use Google Flights or Skyscanner to compare prices across airlines. Direct flights aren’t always more expensive, timing and demand play a big role.
Which Airline Should You Choose?
If you’re loyal to SkyTeam, Delta is a natural pick. For Star Alliance perks, United is your go-to. Southwest offers flexibility and low fares, especially if you’re flying into Hobby Airport. Ultimately, your choice may come down to schedule, price, or loyalty program benefits.
Airlines Flying from Atlanta (ATL) to Houston
- Delta Air Lines (to IAH)
Delta operates regular nonstop flights to IAH, offering a predictable schedule and strong reliability. Travelers can expect solid onboard Wi-Fi, good connection options through the Delta network, and a consistent overall experience. - United Airlines (to IAH)
United is the main carrier linking ATL to IAH, with frequent daily service. This route is a core part of United’s Houston hub, so you’ll find plenty of onward connections and easy access to MileagePlus benefits. - Southwest Airlines (to HOU)
Southwest flies from Atlanta to Hobby (HOU), often with the best schedules for travelers heading south of downtown Houston or connecting deeper into Texas on Southwest’s network. Bags fly free, and the airline’s open seating works well for short domestic hops like this one. - Frontier Airlines (to IAH)
Frontier offers a low-cost option into IAH, usually with fewer daily departures but competitive pricing. It’s a good choice for budget-minded travelers who only need a seat and prefer to pay à la carte for extras. - Spirit Airlines (to IAH)
Spirit provides another ultra-low-cost alternative with nonstop service to IAH. Expect basic fares with add-ons for bags and seat selection, but typically the cheapest entry point for this route.
Does Southwest Airlines Offer Direct Flights from Atlanta to Houston?
Yes, Southwest Airlines offers direct flights from Hartsfield-Jackson Atlanta International Airport (ATL) to Houston. However, it does not fly into George Bush Intercontinental Airport (IAH). Instead, Southwest uses William P. Hobby Airport (HOU), which is a smaller airport located just south of downtown Houston. This can be a convenient option if you are staying in the city.
Southwest is known for low fares and flexible booking. It has plenty of nonstop flights between Atlanta and Houston. Still, it is not always the cheapest choice. Airline prices change based on the time of day, how far in advance you book, and which class of service you choose. Sometimes, Delta or United may offer better deals, even for direct flights.
To find the best price, try using Google Flights. It shows flight times, prices, and airlines all in one place. You can quickly compare your options and choose what works best for your schedule and budget.
Most flights between Atlanta and Houston use Boeing 737s or Airbus A320s. These planes are similar in size, so the flight time will be about the same no matter which airline you choose.
Explore More Flight Routes
Curious how this flight compares to others? For more routes and comparisons, see the complete flight-time guide covering major cities worldwide.
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