Updated: January 21, 2026
United States North America

Houston Airport (IAH)

Houston George Bush International Airport averages 608 flights per day to 200 destinations, with 127 domestic and 73 international routes. A total of 55 airlines operate at IAH, led by United Airlines. This airport provides direct service to 38 countries across six continents, with a route network dominated by domestic flights and Mexico as its largest international market. The longest nonstop route from Houston connects to Sydney, with a typical flight time of 15 hrs 45 mins.

IATA
IAH
ICAO
KIAH
Elevation
97 ft (30 m) MSL
Local Time
America/Chicago (UTC-06:00)
Destinations
200 (127 domestic · 73 international)
Flights per day
608 (481 domestic · 129 international)
Busiest Route
Dallas-Fort Worth (17/day)
Longest Direct Flight
Sydney 15 hrs 45 mins
Shortest Flight
Houston 20 mins
Top Airline
United Airlines (156 routes)
Top Country
United States (481 flights/day)
Longest Runway
12,037 ft / 3,669 m

Weather in Houston

200 Destinations from Houston Airport (IAH)

This week, 200 active routes depart from Houston International Airport. The busiest route connects Houston with Dallas-Fort Worth and is operated by 3 airlines. The longest nonstop flight is to Sydney, and the shortest flight is to Houston.

All Destinations

Flights Destination Route Airlines
17 Dallas-Fort Worth IAH → DFW
1 hr 35 mins
American Airlines, Envoy Air, United Airlines3
16 Chicago IAH → ORD
2 hrs 40 mins
American Airlines, Envoy Air, Frontier Airlines, Spirit Airlines, United Airlines5
15 Los Angeles IAH → LAX
3 hrs 25 mins
Delta Air Lines, Frontier Airlines, SkyWest Airlines, Spirit Airlines, United Airlines, American Airlines6
15 Atlanta IAH → ATL
2 hrs 20 mins
Delta Air Lines, Frontier Airlines, Mesa Airlines, Spirit Airlines, United Airlines5
14 Denver IAH → DEN
2 hrs 30 mins
ATI, Frontier Airlines, United Airlines, Volaris4
12 Miami IAH → MIA
2 hrs 35 mins
American Airlines, Envoy Air, Frontier Airlines, Spirit Airlines, United Airlines5
12 Orlando (MCO) IAH → MCO
2 hrs 25 mins
Frontier Airlines, Spirit Airlines, United Airlines3
12 Newark IAH → EWR
3 hrs 30 mins
Spirit Airlines, United Airlines2
12 San Francisco IAH → SFO
4 hrs
United Airlines1
11 Washington (DCA) IAH → DCA
2 hrs 55 mins
American Airlines, United Airlines2
11 Mexico City IAH → MEX
2 hrs 20 mins
Aeromexico, United Airlines, VivaAerobus, Volaris4
10 Las Vegas IAH → LAS
3 hrs 10 mins
Frontier Airlines, NetJets Aviation, Spirit Airlines, United Airlines, Volaris5
10 Fort Lauderdale IAH → FLL
2 hrs 50 mins
Frontier Airlines, Spirit Airlines, United Airlines3
9 New York (LGA) IAH → LGA
3 hrs 35 mins
Spirit Airlines, United Airlines2
9 Phoenix IAH → PHX
2 hrs 45 mins
American Airlines, Frontier Airlines, United Airlines3
8 Monterrey IAH → MTY
1 hr 50 mins
United Airlines, VivaAerobus2
8 New Orleans IAH → MSY
1 hr 30 mins
United Airlines1
8 Charlotte IAH → CLT
2 hrs 30 mins
American Airlines, Frontier Airlines, Mesa Airlines, United Airlines, Volaris5
8 Austin IAH → AUS
1 hr 15 mins
United Airlines1
8 San Antonio IAH → SAT
1 hr 20 mins
Mesa Airlines, United Airlines2
8 Oklahoma City IAH → OKC
1 hr 40 mins
Delta Air Lines, JRE, United Airlines3
7 Corpus Christi IAH → CRP
1 hr 15 mins
United Airlines1
7 Detroit IAH → DTW
2 hrs 55 mins
Delta Air Lines, Frontier Airlines, Mesa Airlines, Spirit Airlines, United Airlines5
6 Cancún IAH → CUN
2 hrs 50 mins
Spirit Airlines, United Airlines2
6 Santa Clara IAH → SAL
2 hrs 50 mins
Avianca, Frontier Airlines, Spirit Airlines, United Airlines, Vuela El Salvador5
6 Baton Rouge IAH → BTR
1 hr 15 mins
PWR, United Airlines2
6 Midland IAH → MAF
1 hr 40 mins
United Airlines1
6 Salt Lake City IAH → SLC
3 hrs
Delta Air Lines, Mesa Airlines, United Airlines3
6 Baltimore IAH → BWI
3 hrs 15 mins
ATI, Frontier Airlines, Spirit Airlines, United Airlines4
5 Kansas City IAH → MCI
2 hrs 5 mins
Mesa Airlines, United Airlines2
5 Minneapolis IAH → MSP
2 hrs 45 mins
Delta Air Lines, Mesa Airlines, United Airlines3
5 Tulsa IAH → TUL
1 hr 40 mins
United Airlines1
5 Philadelphia IAH → PHL
3 hrs 5 mins
American Airlines, Frontier Airlines, Mesa Airlines, United Airlines4
5 Lafayette IAH → LFT
1 hr 10 mins
United Airlines1
5 Cincinnati IAH → CVG
2 hrs 40 mins
Alaska Airlines, ATI, Atlas Air, Mesa Airlines, United Airlines5
5 El Paso IAH → ELP
2 hrs 10 mins
Mesa Airlines, United Airlines2
5 Tampa IAH → TPA
2 hrs 20 mins
Frontier Airlines, United Airlines2
5 Indianapolis IAH → IND
2 hrs 25 mins
Mesa Airlines, United Airlines2
4 Mc Allen IAH → MFE
1 hr 25 mins
Mesa Airlines, United Airlines2
4 Pensacola IAH → PNS
1 hr 45 mins
TCA, United Airlines2
4 San Diego IAH → SAN
3 hrs 15 mins
United Airlines1
4 Seattle IAH → SEA
4 hrs 15 mins
Alaska Airlines, United Airlines2
4 Birmingham IAH → BHM
2 hrs
Mesa Airlines, PWR, United Airlines3
4 Northwest Arkansas IAH → XNA
1 hr 40 mins
Mesa Airlines, United Airlines2
4 Knoxville IAH → TYS
2 hrs 10 mins
United Airlines1
4 Memphis IAH → MEM
1 hr 50 mins
Delta Air Lines, Mesa Airlines, United Airlines3
4 Wichita IAH → ICT
1 hr 50 mins
United Airlines1
4 Brownsville IAH → BRO
1 hr 25 mins
United Airlines1
4 Harlingen IAH → HRL
1 hr 20 mins
GlobalX Airlines, United Airlines2
4 Little Rock IAH → LIT
1 hr 35 mins
United Airlines1
4 Boston IAH → BOS
3 hrs 45 mins
Flexjet, JetBlue Airways, United Airlines3
4 Mobile IAH → MOB
1 hr 40 mins
United Airlines1
4 Nashville IAH → BNA
2 hrs 5 mins
Delta Air Lines, Libyan Airlines, Mesa Airlines, United Airlines4
4 Guadalajara IAH → GDL
2 hrs 20 mins
United Airlines, VivaAerobus, Volaris3
4 Guatemala City IAH → GUA
2 hrs 40 mins
Frontier Airlines, GlobalX Airlines, Spirit Airlines, United Airlines4
4 Jackson IAH → JAN
1 hr 25 mins
United Airlines1
4 Lubbock IAH → LBB
1 hr 45 mins
United Airlines1
4 Shreveport IAH → SHV
1 hr 10 mins
United Airlines1
4 Toronto IAH → YYZ
3 hrs 5 mins
Air Canada, United Airlines2
4 Huntsville IAH → HSV
1 hr 55 mins
United Airlines1
4 London IAH → LHR
8 hrs 55 mins
British Airways, United Airlines2
4 Querétaro IAH → QRO
2 hrs 5 mins
United Airlines, VivaAerobus2
3 Omaha IAH → OMA
2 hrs 15 mins
Mesa Airlines, United Airlines2
3 Pittsburgh IAH → PIT
2 hrs 45 mins
Flexjet, Mesa Airlines, United Airlines3
3 Raleigh/Durham IAH → RDU
2 hrs 40 mins
Frontier Airlines, United Airlines2
3 San José IAH → SJO
3 hrs 25 mins
PWR, United Airlines2
3 Columbus IAH → CMH
2 hrs 35 mins
Mesa Airlines, Novajet, United Airlines3
3 Fort Myers IAH → RSW
2 hrs 25 mins
NetJets Aviation, United Airlines2
3 Portland IAH → PDX
3 hrs 55 mins
Alaska Airlines, United Airlines2
3 Springfield IAH → SGF
1 hr 50 mins
United Airlines1
3 Aspen IAH → ASE
2 hrs 40 mins
United Airlines1
3 Saint Louis (STL) IAH → STL
2 hrs 10 mins
United Airlines1
3 Santa Ana IAH → SNA
3 hrs 15 mins
United Airlines1
3 Silao IAH → BJX
2 hrs 30 mins
United Airlines, VivaAerobus2
3 Tocumen IAH → PTY
4 hrs 10 mins
United Airlines1
3 San Juan IAH → SJU
4 hrs
United Airlines1
3 Savannah IAH → SAV
2 hrs 20 mins
Mesa Airlines, United Airlines2
3 Cleveland IAH → CLE
2 hrs 50 mins
Flexjet, Mesa Airlines, United Airlines3
3 Colorado Springs IAH → COS
2 hrs 25 mins
Mesa Airlines, United Airlines2
3 Gulfport IAH → GPT
1 hr 30 mins
United Airlines1
3 Laredo IAH → LRD
1 hr 30 mins
United Airlines1
3 Amarillo IAH → AMA
2 hrs
United Airlines1
3 Calgary IAH → YYC
3 hrs 55 mins
United Airlines, WestJet2
3 Panama City Beach IAH → ECP
1 hr 55 mins
United Airlines1
3 Albuquerque IAH → ABQ
2 hrs 20 mins
Mesa Airlines, United Airlines2
2 Jacksonville IAH → JAX
2 hrs 15 mins
Mesa Airlines, United Airlines2
2 Louisville IAH → SDF
2 hrs 20 mins
Mesa Airlines, United Airlines2
2 Bogotá IAH → BOG
4 hrs 50 mins
United Airlines1
2 Buenos Aires IAH → EZE
9 hrs 20 mins
United Airlines1
2 Liberia IAH → LIR
3 hrs 10 mins
United Airlines1
2 San Luis Potosí IAH → SLP
2 hrs 5 mins
United Airlines, Volaris2
2 Des Moines IAH → DSM
2 hrs 30 mins
United Airlines1
2 Lake Charles IAH → LCH
55 mins
United Airlines1
2 Meridian IAH → MEI
1 hr 35 mins
SkyWest Airlines, United Airlines2
2 Ontario IAH → ONT
3 hrs 15 mins
ATI, Frontier Airlines, United Airlines3
2 San José del Cabo IAH → SJD
2 hrs 45 mins
United Airlines1
2 Frankfurt-am-Main IAH → FRA
10 hrs 45 mins
Lufthansa, United Airlines2
2 Milwaukee IAH → MKE
2 hrs 30 mins
Mesa Airlines, United Airlines2
2 New York (JFK) IAH → JFK
3 hrs 10 mins
Delta Air Lines1
2 Tucson IAH → TUS
2 hrs 35 mins
United Airlines1
2 Aguascalientes IAH → AGU
2 hrs 35 mins
United Airlines1
2 Amsterdam IAH → AMS
10 hrs 5 mins
KLM, United Airlines2
2 Belize City IAH → BZE
2 hrs 45 mins
United Airlines1
2 Charleston IAH → CHS
2 hrs 25 mins
Mesa Airlines, United Airlines2
2 Greenville IAH → GSP
2 hrs 20 mins
Mesa Airlines, United Airlines2
2 Istanbul IAH → IST
11 hrs 5 mins
Turkish Airlines1
2 Managua IAH → MGA
3 hrs
United Airlines1
2 Richmond IAH → RIC
2 hrs 50 mins
Mesa Airlines, United Airlines2
2 Tokyo (NRT) IAH → NRT
12 hrs 15 mins
United Airlines, ZIPAIR Tokyo2
2 Victoria IAH → VCT
45 mins
SkyWest Airlines, United Airlines2
2 Hattiesburg/Laurel IAH → PIB
1 hr 25 mins
United Airlines1
2 La Mesa IAH → SAP
2 hrs 40 mins
GlobalX Airlines, Spirit Airlines, United Airlines3
2 Puerto Vallarta IAH → PVR
2 hrs 25 mins
United Airlines1
2 West Palm Beach IAH → PBI
2 hrs 55 mins
United Airlines1
2 Comayagua IAH → XPL
2 hrs 50 mins
Spirit Airlines, United Airlines2
2 Morelia IAH → MLM
2 hrs 10 mins
United Airlines, Volaris2
1 Oaxaca City IAH → OAX
3 hrs
United Airlines1
1 Sacramento IAH → SMF
3 hrs 40 mins
United Airlines1
1 Salina IAH → SLN
2 hrs 5 mins
SkyWest Airlines, United Airlines2
1 Taipei IAH → TPE
14 hrs 55 mins
EVA Air1
1 Doha IAH → DOH
13 hrs 40 mins
Qatar Airways1
1 Honolulu IAH → HNL
8 hrs 5 mins
Atlas Air, United Airlines2
1 Lima IAH → LIM
5 hrs 50 mins
National Airlines, United Airlines2
1 Rio de Janeiro IAH → GIG
10 hrs 5 mins
United Airlines1
1 Sydney IAH → SYD
15 hrs 45 mins
United Airlines1
1 Tokyo (HND) IAH → HND
12 hrs 40 mins
ANA1
1 Dubai IAH → DXB
15 hrs 15 mins
Emirates1
1 Eagle IAH → EGE
2 hrs 45 mins
United Airlines1
1 Edmonton IAH → YEG
4 hrs 10 mins
United Airlines1
1 Grand Rapids IAH → GRR
2 hrs 40 mins
Mesa Airlines, United Airlines2
1 Hobbs IAH → HOB
1 hr 40 mins
United Airlines1
1 Mérida IAH → MID
2 hrs 5 mins
United Airlines1
1 Montreal IAH → YUL
3 hrs 30 mins
Air Canada1
1 Montrose IAH → MTJ
2 hrs 35 mins
United Airlines1
1 Norfolk IAH → ORF
2 hrs 50 mins
United Airlines1
1 Quito IAH → UIO
4 hrs 35 mins
United Airlines1
1 Rionegro IAH → MDE
4 hrs 30 mins
United Airlines1
1 Santiago IAH → SCL
8 hrs 30 mins
United Airlines1
1 São Paulo IAH → GRU
8 hrs 55 mins
United Airlines1
1 Tampico IAH → TAM
1 hr 45 mins
National Airlines, United Airlines2
1 Vancouver IAH → YVR
4 hrs 20 mins
Air Canada1
1 Chicago Rockford IAH → RFD
2 hrs 40 mins
ATI1
1 Gunnison IAH → GUC
2 hrs 30 mins
United Airlines1
1 Hayden IAH → HDN
2 hrs 35 mins
Mesa Airlines, United Airlines2
1 Ixtapa IAH → ZIH
2 hrs 55 mins
United Airlines1
1 Lakeland IAH → LAL
2 hrs 30 mins
ATI1
1 Puebla City IAH → PBC
2 hrs 5 mins
United Airlines1
1 Cozumel IAH → CZM
2 hrs 15 mins
United Airlines1
1 Veracruz IAH → VER
2 hrs 15 mins
United Airlines1
6/week Auckland IAH → AKL
12 hrs 40 mins
Air New Zealand1
6/week Palm Springs IAH → PSP
3 hrs 15 mins
United Airlines1
6/week Paris IAH → CDG
9 hrs 35 mins
Air France1
6/week Port of Spain IAH → POS
4 hrs 55 mins
United Airlines1
6/week Roatan Island IAH → RTB
2 hrs 35 mins
United Airlines1
5/week Georgetown IAH → GEO
5 hrs 50 mins
Ukraine Air Alliance, United Airlines2
4/week Allentown IAH → ABE
3 hrs 15 mins
ATI1
3/week Houston IAH → HOU
20 mins
KPO, NetJets Aviation2
3/week Minot IAH → MOT
2 hrs 55 mins
CommutAir1
3/week Puerto Escondido IAH → PXM
2 hrs 40 mins
United Airlines1
3/week Saltillo IAH → SLW
1 hr 55 mins
Aerolineas Ejecutivas, CommutAir2
3/week San Bernardino IAH → SBD
3 hrs 10 mins
Alaska Airlines, ATI2
3/week Santa Fe IAH → SAF
2 hrs 10 mins
Flexjet, NetJets Aviation2
2/week Acapulco IAH → ACA
2 hrs 40 mins
United Airlines1
2/week Bozeman IAH → BZN
3 hrs 5 mins
Mesa Airlines, United Airlines2
2/week Carlsbad (CNM) IAH → CNM
2 hrs
N11
2/week Dallas IAH → DAL
1 hr 30 mins
NetJets Aviation1
2/week Dayton IAH → DAY
2 hrs 30 mins
Solarius Aviation1
2/week Jebel Ali IAH → DWC
16 hrs 5 mins
Emirates1
2/week Saint Louis (SUS) IAH → SUS
2 hrs 10 mins
ARINC, JRE2
2/week Sarasota/Bradenton IAH → SRQ
2 hrs 20 mins
NetJets Aviation1
2/week Toluca IAH → TLC
2 hrs 30 mins
ACW, Aerolineas Ejecutivas2
2/week Tyler IAH → TYR
1 hr
WUP1
1/week Abilene IAH → ABI
1 hr 25 mins
NetJets Aviation1
1/week Anchorage IAH → ANC
6 hrs 30 mins
Cathay Pacific1
1/week Baku IAH → GYD
11 hrs 5 mins
Silk Way West1
1/week Carlsbad (CLD) IAH → CLD
3 hrs 20 mins
Solarius Aviation1
1/week St Thomas Island IAH → STT
4 hrs 10 mins
United Airlines1
1/week Lewis University IAH → LOT
2 hrs 25 mins
JRE1
1/week Fort Hood/Killeen IAH → GRK
1 hr 15 mins
Atlas Air1
1/week Fort Worth IAH → AFW
1 hr 30 mins
ATI1
1/week Gainesville IAH → GNV
2 hrs 35 mins
United Airlines1
1/week Hahn IAH → HHN
9 hrs 15 mins
Silk Way West1
1/week Hayward IAH → HWD
4 hrs 5 mins
CTP1
1/week Houma IAH → HUM
1 hr 20 mins
SVL1
1/week Kralendijk IAH → BON
4 hrs 40 mins
United Airlines1
1/week Liège IAH → LGG
8 hrs 45 mins
CHG1
1/week Manzanillo IAH → ZLO
2 hrs 45 mins
United Airlines1
1/week Mazatlán IAH → MZT
2 hrs 20 mins
United Airlines1
1/week Montego Bay IAH → MBJ
3 hrs 5 mins
United Airlines1
1/week Nassau IAH → NAS
2 hrs 50 mins
United Airlines1
1/week Oranjestad IAH → AUA
4 hrs
United Airlines1
1/week Orlando (SFB) IAH → SFB
2 hrs 30 mins
Flexjet1
1/week Punta Cana IAH → PUJ
4 hrs
United Airlines1
1/week Rochester IAH → RST
2 hrs 40 mins
Flexjet1
1/week Snyder IAH → SNK
1 hr 35 mins
PWR1
1/week Stuart IAH → SUA
2 hrs 45 mins
Executive Jet Management1
1/week Tepic IAH → TPQ
2 hrs 20 mins
United Airlines1
1/week Teterboro IAH → TEB
3 hrs 20 mins
QQE1
1/week Waco IAH → ACT
1 hr
CommutAir1
1/week Washington (IAD) IAH → IAD
3 hrs
National Airlines1

Airlines

Houston International Airport is served by 55 airlines, with United Airlines in the lead at 45% of routes. The top three carriers together cover 60% of routes. 30 carriers operate only one route each. A total of 30 airlines operate international routes, compared with 33 serving domestic routes. United Airlines is operating the longest nonstop flight, connecting to Sydney with a flight time of 15 hrs 45 mins.

  • United Airlines156 routes
  • Mesa Airlines32 routes
  • Frontier Airlines18 routes
  • Spirit Airlines16 routes
  • Delta Air Lines9 routes
  • ATI9 routes
  • American Airlines8 routes
  • Volaris7 routes
  • NetJets Aviation7 routes
  • Flexjet6 routes
  • VivaAerobus5 routes
  • SkyWest Airlines4 routes
  • PWR4 routes
  • Alaska Airlines4 routes
  • Envoy Air3 routes
  • JRE3 routes
  • Atlas Air3 routes
  • GlobalX Airlines3 routes
  • Air Canada3 routes
  • National Airlines3 routes
  • CommutAir3 routes
  • Emirates2 routes
  • Aerolineas Ejecutivas2 routes
  • Solarius Aviation2 routes
  • Silk Way West2 routes
  • Aeromexico1 route
  • Avianca1 route
  • Vuela El Salvador1 route
  • TCA1 route
  • JetBlue Airways1 route
  • Libyan Airlines1 route
  • British Airways1 route
  • Novajet1 route
  • WestJet1 route
  • Lufthansa1 route
  • KLM1 route
  • Turkish Airlines1 route
  • ZIPAIR Tokyo1 route
  • EVA Air1 route
  • Qatar Airways1 route
  • ANA1 route
  • Air New Zealand1 route
  • Air France1 route
  • Ukraine Air Alliance1 route
  • KPO1 route
  • N11 route
  • ARINC1 route
  • ACW1 route
  • WUP1 route
  • Cathay Pacific1 route
  • CTP1 route
  • SVL1 route
  • CHG1 route
  • Executive Jet Management1 route
  • QQE1 route

Houston International Airport provides direct service to 38 countries across six continents. The route network is 64% domestic and 36% international, with Mexico City, Mexico serving as the primary international destination.

  • United States481/day
  • Mexico55/day
  • Canada10/day
  • El Salvador6/day
  • Costa Rica6/day
  • Honduras4/day
  • Guatemala4/day
  • United Kingdom4/day
  • Colombia3/day
  • Japan3/day
  • Panama3/day
  • Puerto Rico3/day
  • Brazil2/day
  • Argentina2/day
  • Germany2/day
  • Netherlands2/day
  • Belize2/day
  • Turkey2/day
  • Nicaragua2/day
  • Taiwan1/day
  • United Arab Emirates1/day
  • Qatar1/day
  • Peru1/day
  • Australia1/day
  • Ecuador1/day
  • Chile1/day
  • New Zealand6/week
  • France6/week
  • Trinidad & Tobago6/week
  • Guyana5/week
  • Azerbaijan1/week
  • U.S. Virgin Islands1/week
  • Caribbean Netherlands1/week
  • Belgium1/week
  • Jamaica1/week
  • Bahamas1/week
  • Aruba1/week
  • Dominican Republic1/week

Global Rankings of Houston Airport (IAH)

This snapshot shows how Houston Airport (IAH) ranks globally across multiple operational and network dimensions. Rankings reflect relative position worldwide across destination breadth, flight volume, scheduling density, and long-haul reach.

Destinations

Measures how broadly the airport connects distinct endpoints across its route network.

Flights & Scheduling

Reflects flight volume and how intensively runway infrastructure is scheduled.

Distance & Reach

Highlights long-haul connectivity and how distance is distributed across flights and runways.

10 Runways at Houston Airport (IAH)

Runways:
Name Length Width Surface
15L 12,037 ft · 3,669 m 151 ft · 46 m Concrete
33R 12,037 ft · 3,669 m 151 ft · 46 m Concrete
15R 10,030 ft · 3,057 m 151 ft · 46 m Concrete
33L 10,030 ft · 3,057 m 151 ft · 46 m Concrete
09 9,990 ft · 3,045 m 151 ft · 46 m Asphalt
27 9,990 ft · 3,045 m 151 ft · 46 m Asphalt
08R 9,393 ft · 2,863 m 151 ft · 46 m Concrete
26L 9,393 ft · 2,863 m 151 ft · 46 m Concrete
08L 8,990 ft · 2,740 m 151 ft · 46 m Concrete
26R 8,990 ft · 2,740 m 151 ft · 46 m Concrete

The runways at this airport are long enough to accomodate all aircraft.