Houston to Atlanta (IAH–ATL) — Airlines, Schedules & Connections
No flights match your filters.
No scheduled airline flights on this route — it's flown by charter / private operators (). No nonstop flights on this route. connecting options below.
Most recently operated nonstop flights — the month shown is when each was last scheduled. Most destinations remain reachable with a connection.
No discontinued nonstop flights on record for this route.
IAH–ATL is served by 5 airlines with nonstop service. Delta Air Lines, United Airlines and Frontier lead the route. The flight covers 688 miles in approximately 2h 10m. Beyond nonstop, 1-stop connecting options are also available.
Airline Landscape
| Airline | Freq/wk | Aircraft | Duration | Dep OTP | Alliance | Codeshares |
|---|---|---|---|---|---|---|
| DL Delta Air Lines Also: AF, AM, KE, KL, LA, SK, VS, WS | 58 | 320, 321 | 2h02-2h17 | SkyTeam | AF, AM, KE, KL, LA, SK, VS, WS | |
| UA United Airlines Also: EK, NZ | 39 | 319, 738, E75L, E7W | 2h13-2h21 | Star Alliance | EK, NZ | |
| F9 Frontier Also: Y4 | 22 | 32Q, A20N | 2h18-2h33 | – | Y4 | |
| NK Spirit Airlines | 7 | 320 | 2h03 | – | – | |
| GXA GXA | 0 | – | – | – | – |
Weekly Schedule Pattern
Connection Landscape
On-Time Performance
Other ways to reach Atlanta from Houston
| Metric | IAH→ATL | HOU→ATL | AUS→ATL |
|---|---|---|---|
| Distance from IAH | – | 24 mi | 140 mi |
| Nonstop airlines | 5 | 13 | 11 |
| Weekly flights | 300 | 148 | 273 |
| Flight time | 2h 10m | 1h 58m | 2h 6m |
| Departure OTP | 62% | – | – |
Travel Essentials
IAH: CDT · ATL: EDT
When it's 6:00 PM in Houston, it's 7:00 PM in Atlanta.
IAH has no direct rail link to downtown Houston. The IAH Express bus runs from Houston Amtrak/Greyhound station via Park & Ride to Terminal C (60–90 min, $1.25 with METRO Q card). This is the only transit option; Houston's rail network does not reach the airport.Taxis from downtown Houston cost $50–70 and take 40–60 minutes. Ride-hails (Uber, Lyft) are typically $35–55. IAH sits 23 miles north of downtown on the North Freeway (I-45); traffic is heavy during morning and evening rush. Remote economy parking lots serve all terminals via shuttle.
MARTA Gold Line connects the airport to downtown Atlanta (16 min, $2.50) and Buckhead (30 min). Taxis have a flat rate of $30 to downtown, $38 to Buckhead. Ride-shares are typically $20–35.
The SkyTrain people mover links the Domestic and International terminals, rental car center, and Georgia International Convention Center.
Humid subtropical climate. Summers are hot and humid (30–35°C) with frequent afternoon thunderstorms that cause flight delays June through August. Winters are mild (2–10°C) with rare snowfall. Ice storms can shut down the airport when they hit.
Spring brings severe weather risk including tornadoes. Fall (September–November) is the most pleasant season for travel.
IAH–ATL Quick Facts
Frequently Asked Questions
Houston Intercontinental to Atlanta: Two of the Country's Largest Hubs, Back to Back
IAH–ATL links United's largest domestic hub with Delta's global mega-hub, making this corridor one of the most strategically significant in the US network. Both airlines maintain dense frequency: United from its IAH hub and Delta from its ATL home base. Block time is under 2 hours. The route carries a high proportion of connecting passengers feeding onward from Houston's Latin America and Gulf Coast network into Atlanta's Southeast, Caribbean, and transatlantic connections, or the reverse. Energy sector business traffic between Houston and Atlanta supplements the connection volume throughout the week.
Hub-to-Hub Dynamics and Weather Exposure
When two major hubs face simultaneous weather disruption, the cascading effects travel across both airlines' entire networks. IAH and ATL together handle hundreds of connections daily, and delays on IAH–ATL propagate into missed connections at both ends. Houston's spring and summer convective exposure is among the highest of any US hub city. ATL generates its own convective events in summer and ice storm closures in winter. Despite the weather risk, the frequency of available flights means passengers are typically rebooked within 2–3 hours even on disrupted days. Both airports have extensive lounges and same-day standby processes for hub-based carriers.