Houston to St Louis (IAH–STL) — Airlines, Schedules & Connections
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No nonstop flights on this route. connecting options below.
IAH–STL is served by 3 airlines with nonstop service. United Airlines, Copa Airlines and American Airlines lead the route. The flight covers 668 miles in approximately 0h 48m. Beyond nonstop, 82 hubs offer 1-stop connections.
Airline Landscape
| Airline | Freq/wk | Aircraft | Duration | Dep OTP | Alliance | Codeshares |
|---|---|---|---|---|---|---|
| UA United Airlines | 28 | 319, 320, E75L | 0h48-2h08 | Star Alliance | – | |
| CM Copa Airlines | 14 | 319, E75L | 2h04-2h10 | Star Alliance | – | |
| AA American Airlines | 1 | – | 2h04 | Oneworld | – |
Weekly Schedule Pattern
Connection Landscape
On-Time Performance
Other ways to reach St Louis from Houston
| Metric | IAH→STL | HOU→STL | AUS→STL |
|---|---|---|---|
| Distance from IAH | – | 24 mi | 140 mi |
| Nonstop airlines | 3 | 3 | 2 |
| Weekly flights | 43 | 50 | 41 |
| Flight time | 0h 48m | 1h 10m | 2h |
| Departure OTP | 100% | – | – |
Travel Essentials
IAH: CDT · STL: EDT
When it's 6:00 PM in Houston, it's 7:00 PM in St Louis.
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.
IAH–STL Quick Facts
Frequently Asked Questions
Flights from IAH to STL
George Bush Intercontinental Airport (IAH) and St. Louis Lambert International Airport (STL) are connected by nonstop service from American Airlines, Copa Airlines and United Airlines. With 43 weekly departures, this is a heavily served route.
IAH to STL Flight Duration and Schedule
Nonstop flight time from IAH to STL ranges from 0 hours 48 minutes to 2 hours 10 minutes. The route covers a distance of 668 miles (1,076 km). There are approximately 43 weekly flights outbound and 35 return, totaling 78 flights per week in both directions.
Connecting Options and Alternatives
82 one-stop connections are available, with the fastest taking approximately 2 hours via SUS. Two-stop connections are also available via intermediate hubs. Nearby alternative airports include Houston (HOU) and Austin (AUS).