Chicago to Houston Flights ORD → IAH

Chicago O'Hare International Airport → George Bush Intercontinental Houston Airport

🇺🇸 Chicago, US → 🇺🇸 Houston, US

The Chicago to Houston route connects Chicago O'Hare International Airport (ORD) in US with George Bush Intercontinental Houston Airport (IAH) in US. This short-haul flight covers approximately 977 miles (1572 km) with a typical flight time of 2h 29m. This route is served by 10 airlines: United, Envoy Air, Republic and others. AirportRoutes has tracked 12 daily flights on this route.

Departure Airport

Chicago O'Hare International Airport

ICAO Code:: KORD
IATA Code:: ORD
City:: 🇺🇸 Chicago
Country:: US
Elevation:: 680 ft

Destination Airport

George Bush Intercontinental Houston Airport

ICAO Code:: KIAH
IATA Code:: IAH
City:: 🇺🇸 Houston
Country:: US
Elevation:: 97 ft

Operators

Daily Flights

977

Miles

2h 29m

Flight Duration

Route Map

Operating Airlines

Airline	ICAO	IATA
United	`UAL`	`UA`
Envoy Air	`ENY`	`MQ`
Republic	`RPA`	`YX`
Qatar Airways	`QTR`	`QR`
Frontier	`FFT`	`F9`
American Airlines	`AAL`	`AA`
Turkish Airlines	`THY`	`TK`
Volaris	`VOI`	`Y4`
SkyWest	`SKW`	`OO`
Emirates	`UAE`	`EK`

Flight Schedule Pattern

Day	Flights Observed	Frequency
Monday	9	12%
Tuesday	12	16%
Wednesday	10	13%
Thursday	12	16%
Friday	10	13%
Saturday	11	15%
Sunday	11	15%

Pattern Analysis

12 Daily Flights:

ENY3672 UAL537 RPA4749 ENY1168 RPA4431 FFT2564 VOI2496 UAL3921 FFT2496 FFT3135 VOI2564 SKW6099

Data Points: 75
API observations used to build this analysis

Weekdays: 53 flights
Weekend: 22 flights

Business Route More active on weekdays

All Flight Routes

10 Routes

Note: This table shows aggregated route data by airline. Each airline may operate multiple daily flights at different times. See the "Spotted Departure Times" section below for all observed departure times.

Airline	Flight Numbers	Aircraft Type	Typical Time	Days Active	Last Seen	Status
American Airlines `AAL` / `AA`	-	A319	-	M T W T F S S	Nov 5, 2025	Active
Emirates `UAE` / `EK`	-	B77L	-	M T W T F S S	Oct 16, 2025	Active
Envoy Air `ENY` / `MQ`	ENY3672 ENY1168	E170	13:44 1:44 PM (Representative)	M T W T F S S	Feb 6, 2026	Active
Frontier `FFT` / `F9`	FFT2564 FFT2496 FFT3135	A21N	15:51 3:51 PM (Representative)	M T W T F S S	Dec 25, 2025	Active
Qatar Airways `QTR` / `QR`	-	B77L	-	M T W T F S S	Oct 11, 2025	Active
Republic `RPA` / `YX`	RPA4749 RPA4431	E75L	09:43 9:43 AM (Representative)	M T W T F S S	Jan 2, 2026	Active
SkyWest `SKW` / `OO`	SKW6099	E170	05:45 5:45 AM (Representative)	M T W T F S S	Jan 19, 2026	Active
Turkish Airlines `THY` / `TK`	-	B77L	03:10 3:10 AM (Representative)	M T W T F S S	Nov 27, 2025	Active
United `UAL` / `UA`	UAL537 UAL3921	B739	21:00 9:00 PM (Representative)	M T W T F S S	Feb 7, 2026	Active
Volaris `VOI` / `Y4`	VOI2496 VOI2564	A320	16:47 4:47 PM (Representative)	M T W T F S S	Dec 24, 2025	Active

Total Routes: 10

Active Routes: 10

Unique Airlines: 10

Aircraft Types: 10

Spotted Departure Times

Departure Time	Operator	ICAO	IATA
03:10 3:10 AM	Turkish Airlines	`THY`	`TK`
05:45 5:45 AM	SkyWest	`SKW`	`OO`
09:43 9:43 AM	Republic	`RPA`	`YX`
13:44 1:44 PM	Envoy Air	`ENY`	`MQ`
15:51 3:51 PM	Frontier	`FFT`	`F9`
16:47 4:47 PM	Volaris	`VOI`	`Y4`
21:00 9:00 PM	United	`UAL`	`UA`

Time Information

Times are shown in the departure airport's local timezone (KORD - America/Chicago).

Total Departure Times: 7

Time Range:
03:10 - 21:00

These are typical departure times observed from actual flights. Times may vary by season and schedule changes.