St. Louis to Houston (STL-IAH): nonstop flights and who flies them

United Airlines flies nonstop between St. Louis (STL) and Houston (IAH), roughly 62 times a week. With United Airlines running most of the schedule, the shape of a week is predictable, which makes an open premium seat on a given date easy to spot and quick to lose. United Airlines fly the route nonstop in 2LNR's schedule data; the timetable and the reverse direction are below.

Schedule last confirmed . Departure times come from 2LNR's schedule data; confirm with the airline before you book.

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62
Nonstop flights a week
668 mi
Nonstop distance
Free
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St. Louis to Houston flight schedule

Scheduled nonstop departures for STL to IAH, last checked against our schedule feed on September 6, 2026. Airlines retime and cancel flights, so confirm with the airline before you book.

Schedule data dated .

Scheduled nonstop departures from St. Louis (STL) to Houston (IAH)
Date Flight Airline Departs STL Arrives IAH Duration Aircraft
UA 4581United Airlines06:1508:322h 17mCR5
UA 4585United Airlines08:3510:522h 17mCR5
UA 502United Airlines08:3510:472h 12m7M9
UA 6213United Airlines11:1013:252h 15mE7W
UA 5566United Airlines11:1513:322h 17mE7W
UA 5589United Airlines11:1513:322h 17mE7W
UA 5580United Airlines14:5717:162h 19mE7W
UA 4060United Airlines15:1317:252h 12mE7W
UA 4609United Airlines15:1317:252h 12mCR5
UA 4581United Airlines06:1508:322h 17mCR5
UA 6213United Airlines11:1013:252h 15mE7W
UA 5566United Airlines11:1513:322h 17mE7W
UA 5589United Airlines11:1513:322h 17mE7W
UA 5580United Airlines14:5717:162h 19mE7W
UA 4060United Airlines15:1317:252h 12mE7W
UA 6156United Airlines15:1317:252h 12mE7W
UA 6258United Airlines06:1508:322h 17mE7W
UA 4585United Airlines08:3510:522h 17mCR5
UA 4595United Airlines08:3510:522h 17mCR5
UA 6213United Airlines11:1013:252h 15mE7W
UA 5566United Airlines11:1513:322h 17mE7W
UA 5589United Airlines11:1513:322h 17mE7W
UA 5580United Airlines14:5717:162h 19mE7W
UA 4060United Airlines15:1317:252h 12mE7W
UA 6156United Airlines15:1317:252h 12mE7W
UA 4595United Airlines08:3510:522h 17mCR5
UA 6213United Airlines11:1013:252h 15mE7W
UA 4060United Airlines15:1317:252h 12mE7W
UA 4609United Airlines15:1317:252h 12mCR5
UA 4585United Airlines08:3510:522h 17mCR5
UA 4595United Airlines08:3510:522h 17mCR5
UA 6213United Airlines11:1013:252h 15mE7W
UA 5589United Airlines11:1513:322h 17mE7W
UA 5580United Airlines14:5717:162h 19mE7W
UA 4060United Airlines15:1317:252h 12mE7W
UA 6156United Airlines15:1317:252h 12mE7W
UA 519United Airlines06:1508:272h 12m738
UA 6258United Airlines06:1508:322h 17mE7W
UA 4585United Airlines08:3510:522h 17mCR5
UA 4595United Airlines08:3510:522h 17mCR5

Showing the first 40 of 54 scheduled STL to IAH departures across the next 7 days with service. Every remaining date is on the interactive map.

Departure and arrival times are local at their own airport, so an arrival can fall on a different local date than the departure; the duration column is the true elapsed flying time. A dash means the airline has not filed that value in the schedule data we hold. Aircraft are IATA equipment codes as filed, and can change up to departure.

See every STL to IAH date on the interactive map

The full STL to IAH nonstop schedule

United Airlines fly the route nonstop in 2LNR's schedule data. This page carries the full STL to IAH nonstop schedule, who operates each departure and how often it runs; the reverse direction is linked below.

See real availability

Confirmed upgrade and award seats on each STL to IAH departure, checked against live inventory so you know what is open before you book.

Set an alert

Premium inventory turns over fast. Watch this route and 2LNR notifies you when space appears on a date you are tracking.

Plan on the map

See STL to IAH on the interactive route map, with schedules, connections, and route statistics.

Airlines flying St. Louis to Houston nonstop

Carriers operating STL to IAH nonstop in the current schedule. 2LNR tracks confirmed upgrade and award space on each of them.

See STL to IAH on the interactive map →

Frequently asked questions about STL to IAH

How far is Houston from St. Louis?
STL to IAH covers about 668 miles nonstop. Flight times vary by aircraft and season; the schedule table on this page lists each scheduled departure with its own times.
Which airlines fly nonstop from STL to IAH?
United Airlines is currently the only airline flying STL to IAH nonstop. None of them is a carrier 2LNR reads inventory for, so this page carries the STL to IAH schedule rather than a space claim.
How many flights a week are there from STL to IAH?
About 62 nonstop flights a week run between St. Louis and Houston in the current schedule, operated by United Airlines. Frequency shifts by season, and the schedule table on this page shows what is scheduled next.
What time do flights from STL to IAH depart?
Scheduled STL to IAH nonstops in the next 7 days with service leave between 06:15 and 15:13, local time at St. Louis. The schedule table on this page lists every departure by date, with its arrival time and aircraft.
Does 2LNR show upgrade or award space on STL to IAH?
Not on this route: none of United Airlines is a carrier 2LNR reads inventory for. The page carries the full STL to IAH nonstop schedule and who flies each departure, and the reverse direction is linked below.

See the full STL to IAH nonstop schedule

Every scheduled departure on this route, with who flies it. On the routes 2LNR does read inventory for, upgrade and award space shows by date, the next 14 days free on every product and the full horizon on Pro.

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