Houston to Chicago (IAH-ORD): nonstop upgrade & award space

United Airlines, American Airlines, and Frontier Airlines fly nonstop between Houston (IAH) and Chicago (ORD), roughly 162 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. 2LNR tracks confirmed upgrade and award space on American Airlines, on every IAH to ORD departure, so you know which flights have space before you book.

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

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162
Nonstop flights a week
926 mi
Nonstop distance
Free
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Houston to Chicago flight schedule

Scheduled nonstop departures for IAH to ORD, 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 Houston (IAH) to Chicago (ORD)
Date Flight Airline Departs IAH Arrives ORD Duration Aircraft
UA 1044United Airlines05:0007:552h 55m7M9
AA 3106American Airlines06:0509:053h738
UA 2616United Airlines06:1509:092h 54m32Q
UA 2182United Airlines07:2010:152h 55m7M9
UA 1617United Airlines08:0010:552h 55m32Q
UA 2124United Airlines09:3012:252h 55m739
AA 2504American Airlines11:0013:542h 54m738
F9 1882Frontier Airlines11:2514:172h 52m32Q
UA 2417United Airlines11:5514:512h 56m32Q
UA 2827United Airlines11:5514:512h 56m32Q
AA 1915American Airlines13:3616:352h 59m738
UA 699United Airlines13:4516:412h 56m32Q
AA 3322American Airlines14:0817:083h738
UA 1503United Airlines15:3418:302h 56m32Q
AA 2302American Airlines17:0020:083h 8m738
UA 1342United Airlines17:0620:052h 59m32Q
UA 2197United Airlines18:4021:322h 52m32Q
AA 2243American Airlines18:5022:003h 10m319
UA 1752United Airlines20:3523:272h 52m32Q
UA 787United Airlines22:1900:592h 40m7M9
UA 1044United Airlines05:0007:552h 55m7M9
AA 3106American Airlines06:0509:053h738
UA 2616United Airlines06:1509:092h 54m32Q
UA 2182United Airlines07:2010:152h 55m7M9
UA 1617United Airlines08:2511:202h 55m32Q
AA 1517American Airlines09:0611:582h 52m319
UA 2124United Airlines09:3012:252h 55m739
AA 2504American Airlines11:0013:542h 54m738
UA 2417United Airlines11:5514:502h 55m739
UA 2827United Airlines11:5514:512h 56m32Q
AA 1915American Airlines13:3616:352h 59m738
UA 699United Airlines13:4516:412h 56m32Q
AA 3322American Airlines14:0817:083h738
UA 1503United Airlines15:3418:302h 56m32Q
AA 2302American Airlines16:5720:053h 8m738
UA 1342United Airlines17:0620:052h 59m32Q
UA 2197United Airlines18:4021:322h 52m32Q
F9 3136Frontier Airlines18:4221:342h 52m32N
AA 2243American Airlines18:5022:003h 10m319
UA 1752United Airlines20:3523:272h 52m32Q

Showing the first 40 of 148 scheduled IAH to ORD 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 IAH to ORD date on the interactive map

Confirmed upgrade & award space on IAH to ORD departures

2LNR tracks confirmed upgrade and award space on American Airlines, segment by segment and date by date. Open the calendar for Houston to Chicago to see which departures have space, the next 14 days free on every product and the full horizon on Pro.

See real availability

Confirmed upgrade and award seats on each IAH to ORD 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 IAH to ORD on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Houston to Chicago nonstop

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

See IAH to ORD on the interactive map →

Frequently asked questions about IAH to ORD

How far is Chicago from Houston?
IAH to ORD covers about 926 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 IAH to ORD?
United Airlines, American Airlines, and Frontier Airlines fly the route nonstop. 2LNR tracks confirmed upgrade and award space on American Airlines.
How many flights a week are there from IAH to ORD?
About 162 nonstop flights a week run between Houston and Chicago in the current schedule, operated by United Airlines, American Airlines, and Frontier Airlines. Frequency shifts by season, and the schedule table on this page shows what is scheduled next.
What time do flights from IAH to ORD depart?
Scheduled IAH to ORD nonstops in the next 7 days with service leave between 05:00 and 22:19, local time at Houston. The schedule table on this page lists every departure by date, with its arrival time and aircraft.
How do I check upgrade or award availability on IAH to ORD?
Open the IAH to ORD route on the interactive map or the matrix to see confirmed upgrade and award space by date on American Airlines, the next 14 days free and the full horizon on Pro. On Pro you can also set an alert on the route and 2LNR notifies you when space opens.

Never miss IAH to ORD upgrade or award space

See what is open by date on this route, the next 14 days free on every product and the full horizon on Pro.

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