163 destinations have scheduled flights from IAH, about 4,977 departures a week. Weekly frequencies come from airline schedules and observed departures, not live status.
| Destination | Flights per week | Airlines | Typical duration |
|---|---|---|---|
| Chicago O'hare International (ORD) | 149 | United Airlines, American Airlines, Envoy Air Inc., Frontier Airlines, Inc., Spirit Airlines | — |
| Dallas/Fort Worth International (DFW) | 145 | American Airlines, United Airlines, Envoy Air Inc., UPS Airlines, CAIRE dba Air Antilles Express | — |
| Hartsfield-jackson Atlanta International (ATL) | 130 | United Airlines, Delta Air Lines, Frontier Airlines, Inc., Spirit Airlines | — |
| New York (LGA) | 111 | United Airlines, Delta Air Lines, Spirit Airlines, Mesa Airlines, Inc. | — |
| Los Angeles International (LAX) | 109 | United Airlines, Delta Air Lines, SkyWest Airlines, Frontier Airlines, Inc., Spirit Airlines | — |
| Las Vegas (LAS) | 105 | United Airlines, Frontier Airlines, Inc., Spirit Airlines | — |
| Baton Rouge (BTR) | 96 | United Airlines, Mesa Airlines, Inc. | — |
| Phoenix (PHX) | 96 | United Airlines, SkyWest Airlines, American Airlines, Frontier Airlines, Inc. | — |
| Corpus Christi International Airport (CRP) | 93 | United Airlines, Delta Air Lines | — |
| San Francisco International (SFO) | 86 | United Airlines | — |
| San Antonio (SAT) | 85 | United Airlines | — |
| Denver International (DEN) | 84 | United Airlines, Frontier Airlines, Inc. | — |
| Miami International Airport (MIA) | 79 | United Airlines, American Airlines, Spirit Airlines, Frontier Airlines, Inc., Envoy Air Inc. | — |
| Detroit Metropolitan Wayne County (DTW) | 78 | Delta Air Lines, United Airlines, Spirit Airlines, Frontier Airlines, Inc., Mesa Airlines, Inc. | — |
| Will Rogers World Airport (OKC) | 78 | United Airlines, Mesa Airlines, Inc. | — |
| Orlando International (MCO) | 75 | United Airlines, Spirit Airlines, Frontier Airlines, Inc. | — |
| Ronald Reagan Washington National Airport (DCA) | 74 | United Airlines, American Airlines | — |
| Lafayette Regional (LFT) | 73 | United Airlines | — |
| Mc Allen Miller International (MFE) | 71 | United Airlines, Mesa Airlines, Inc. | — |
| Charlotte Douglas (CLT) | 70 | American Airlines, United Airlines, Mesa Airlines, Inc., Delta Air Lines, Frontier Airlines, Inc. | — |
| Newark Liberty International (EWR) | 68 | United Airlines | — |
| Midland International (MAF) | 63 | United Airlines | — |
| Tulsa (TUL) | 63 | United Airlines, Mesa Airlines, Inc. | — |
| San Diego (SAN) | 60 | United Airlines | — |
| Monterrey (MTY) | 56 | United Airlines, Viva Airlines | — |
| Shreveport (SHV) | 55 | United Airlines, Delta Air Lines | — |
| Memphis (MEM) | 53 | United Airlines, Mesa Airlines, Inc., SkyWest Airlines, Federal Express | — |
| Logan International (BOS) | 52 | United Airlines, JetBlue | — |
| Internacional Benito Juarez (MEX) | 52 | United Airlines, Aeromexico, Volaris, Viva Airlines | — |
| Louis Armstrong New Orléans International Airport (MSY) | 51 | United Airlines, Frontier Airlines, Inc. | — |
| Mid-Continent (ICT) | 50 | United Airlines, Mesa Airlines, Inc. | — |
| Birmingham (BHM) | 49 | Mesa Airlines, Inc., United Airlines | — |
| Fort Lauderdale–Hollywood International (FLL) | 49 | United Airlines, Spirit Airlines | — |
| Salt Lake City International (SLC) | 49 | United Airlines, Delta Air Lines | — |
| Tampa International (TPA) | 49 | United Airlines, Frontier Airlines, Inc. | — |
| Austin-bergstrom International (AUS) | 48 | United Airlines | — |
| Minneapolis - St. Paul International (MSP) | 46 | Delta Air Lines, United Airlines, Mesa Airlines, Inc. | — |
| Philadelphia International (PHL) | 46 | United Airlines, American Airlines, Frontier Airlines, Inc. | — |
| Nashville International (BNA) | 44 | United Airlines, Delta Air Lines, Mesa Airlines, Inc. | — |
| Omaha (OMA) | 43 | United Airlines, Mesa Airlines, Inc. | — |
| Pensacola (PNS) | 43 | United Airlines | — |
| South Padre Is. International (BRO) | 41 | United Airlines | — |
| Santa Ana (SNA) | 41 | United Airlines | — |
| Jacksonville, (JAX) | 39 | United Airlines | — |
| Indianapolis International (IND) | 38 | United Airlines, Mesa Airlines, Inc., Federal Express | — |
| Pittsburgh International (PIT) | 38 | United Airlines, Mesa Airlines, Inc. | — |
| El Paso International Airport (ELP) | 37 | Mesa Airlines, Inc., United Airlines | — |
| General Mitchell International (MKE) | 37 | United Airlines, Delta Air Lines, Mesa Airlines, Inc. | — |
| Palm Beach International Airport (PBI) | 37 | United Airlines | — |
| Cincinnati/Northern Kentucky (CVG) | 36 | United Airlines, Alaska Airlines, ABX Air, Inc. | — |
| NW Florida Beaches Int (ECP) | 36 | United Airlines | — |
| Huntsville International - Carl T. Jones Field (HSV) | 36 | United Airlines | — |
| Fayetteville/Springdale/ (XNA) | 36 | United Airlines, Mesa Airlines, Inc. | — |
| Washington Dulles International (IAD) | 35 | United Airlines | — |
| Kansas City International Airport (MCI) | 35 | United Airlines, Mesa Airlines, Inc. | — |
| Springfield-Branson Rg (SGF) | 35 | United Airlines | — |
| Greenville Spartanburg International Airport (GSP) | 33 | Mesa Airlines, Inc., United Airlines | — |
| Lubbock Preston Smith International (LBB) | 33 | United Airlines | — |
| Lambert-St. Louis International (STL) | 33 | United Airlines | — |
| Del Bajío International (BJX) | 32 | United Airlines, Viva Airlines | — |
| Don Miguel Hidalgo y Costilla International (GDL) | 31 | United Airlines, Volaris, Viva Airlines | — |
| Adams Field Airport (LIT) | 31 | United Airlines, Delta Air Lines | — |
| El Salvador International (SAL) | 31 | AVIANCA, United Airlines, Anic Airways | — |
| Baltimore/Washington International Thurgood Marshall (BWI) | 30 | United Airlines, Frontier Airlines, Inc. | — |
| Knoxville (TYS) | 30 | United Airlines | — |
| Cancún International (CUN) | 28 | United Airlines | — |
| Heathrow (LHR) | 28 | British Airways, United Airlines | — |
| Jackson-evers (JAN) | 27 | United Airlines | — |
| Seattle-Tacoma International (SEA) | 26 | United Airlines, Alaska Airlines | — |
| Raleigh-durham International Airport (RDU) | 25 | United Airlines, Frontier Airlines, Inc. | — |
| Fort Myers (RSW) | 25 | United Airlines | — |
| Mobile Regional Airport (MOB) | 23 | United Airlines | — |
| Ingeniero Fernando Espinoza Gutiérrez International (QRO) | 23 | United Airlines, Viva Airlines | — |
| Meridian (MEI) | 22 | SkyWest Airlines, United Airlines | — |
| Gulfport-Biloxi International (GPT) | 21 | United Airlines | — |
| La Aurora (GUA) | 21 | United Airlines | — |
| Valley International (HRL) | 21 | United Airlines | — |
| Juan Santamaría International (SJO) | 21 | United Airlines | — |
| Albuquerque International (ABQ) | 20 | United Airlines | — |
| Port Columbus International (CMH) | 20 | United Airlines, Mesa Airlines, Inc. | — |
| Lake Charles (LCH) | 20 | United Airlines | — |
| Portland International (PDX) | 20 | United Airlines, Alaska Airlines | — |
| Louisville International (Standiford Field) (SDF) | 20 | Mesa Airlines, Inc., Amerijet International Inc., UPS Airlines | — |
| Charleston, AFB Municipal (CHS) | 19 | United Airlines, Mesa Airlines, Inc. | — |
| Laredo International Airport (LRD) | 19 | United Airlines | — |
| Schiphol (AMS) | 18 | KLM, United Airlines | — |
| Greater Rockford Airport (RFD) | 18 | Air Transport International Inc., UPS Airlines | — |
| Salina (SLN) | 18 | SkyWest Airlines | — |
| Hopkins International (CLE) | 17 | United Airlines, Mesa Airlines, Inc. | — |
| Francisco J. Múgica Internacional (MLM) | 17 | United Airlines, Volaris | — |
| Savannah/Hilton Head (SAV) | 17 | United Airlines | — |
| Tucson (TUS) | 17 | United Airlines | — |
| Rick Husband Amarillo International (AMA) | 15 | United Airlines | — |
| El Nuevo Dorado International (BOG) | 14 | United Airlines | — |
| Charles De Gaulle (CDG) | 14 | Air France | — |
| Colorado Springs (COS) | 14 | United Airlines, Mesa Airlines, Inc. | — |
| Des Moines (DSM) | 14 | United Airlines | — |
| Ezeiza Ministro Pistarini (EZE) | 14 | United Airlines | — |
| Frankfurt International Airport (FRA) | 14 | Lufthansa Cargo, United Airlines | — |
| Oaxaca City (OAX) | 14 | United Airlines | — |
| Norfolk (ORF) | 14 | United Airlines | — |
| Tocumen International (PTY) | 14 | United Airlines | — |
| Richmond (RIC) | 14 | United Airlines, Mesa Airlines, Inc. | — |
| Victoria (VCT) | 14 | SkyWest Airlines | — |
| Edmonton (YEG) | 14 | United Airlines | — |
| Lester B. Pearson International (YYZ) | 14 | Air Canada, United Airlines | — |
| Aspen (ASE) | 13 | United Airlines | — |
| Key West International Airport (EYW) | 13 | Mesa Airlines, Inc. | — |
| Istanbul Airport (IST) | 13 | THY - Turkish Airlines | — |
| Vancouver International (YVR) | 13 | Air Canada | — |
| Lovell Field (CHA) | 12 | United Airlines | — |
| Sarasota/Bradenton International (SRQ) | 12 | United Airlines | — |
| Gerald R. Ford International (GRR) | 11 | Mesa Airlines, Inc., United Airlines | — |
| Ontario International (ONT) | 11 | United Airlines, Frontier Airlines, Inc. | — |
| Calgary (YYC) | 11 | WestJet | — |
| Hattiesburg/Laurel (PIB) | 10 | SkyWest Airlines, United Airlines | — |
| Ramon Villeda Morales International (SAP) | 10 | United Airlines | — |
| San Luis Potosí (SLP) | 10 | United Airlines, Volaris | — |
| Aguascalients (AGU) | 7 | United Airlines | — |
| Philip S. W. Goldson International (BZE) | 7 | United Airlines | — |
| Doha International (DOH) | 7 | Qatar Airways | — |
| Dubai (DXB) | 7 | Emirates | — |
| Owen Roberts International (GCM) | 7 | United Airlines | — |
| Galeao Antonio Carlos Jobim (GIG) | 7 | United Airlines | — |
| Aeroporto Internacional Guarulhos (GRU) | 7 | United Airlines | — |
| Lea County (HOB) | 7 | United Airlines | — |
| John F Kennedy International (JFK) | 7 | Delta Air Lines | — |
| Lakeland (LAL) | 7 | Air Transport International Inc. | — |
| Jorge Chavez International (LIM) | 7 | United Airlines | — |
| Daniel Oduber International (LIR) | 7 | United Airlines | — |
| Jose Maria Cordova (MDE) | 7 | United Airlines | — |
| Montgomery (MGM) | 7 | United Airlines | — |
| Rejon (MID) | 7 | United Airlines | — |
| Franz Josef Strauss (MUC) | 7 | United Airlines | — |
| Narita International Airport (NRT) | 7 | United Airlines, Zipair Tokyo | — |
| Port of Spain (POS) | 7 | United Airlines | — |
| San Bernardino (SBD) | 7 | Alaska Airlines | — |
| Arturo Merino Benitez (SCL) | 7 | United Airlines | — |
| Los Cabos (SJD) | 7 | United Airlines | — |
| Luis Munoz Marin International (SJU) | 7 | United Airlines | — |
| Sacramento (SMF) | 7 | United Airlines | — |
| Kingsford Smith (SYD) | 7 | United Airlines | — |
| Quito (UIO) | 7 | United Airlines | — |
| Montreal (YUL) | 7 | Air Canada | — |
| Auckland International (AKL) | 6 | Air New Zealand | — |
| San Miguel de Cozumel (CZM) | 6 | United Airlines | — |
| Haneda Airport (HND) | 6 | All Nippon Airways | — |
| Barkley Regional (PAH) | 6 | United Airlines | — |
| Palm Springs Metropolitan Area (PSP) | 6 | United Airlines | — |
| Tulum (TQO) | 6 | United Airlines | — |
| Eagle County (EGE) | 5 | United Airlines | — |
| Augusto C Sandino (MGA) | 5 | United Airlines | — |
| Fort Worth Alliance (AFW) | 4 | Federal Express | — |
| Cheddi Jagan International (GEO) | 4 | United Airlines | — |
| Leonardo Da Vinci (Fiumicino) (FCO) | 3 | ITA Airways | — |
| Yampa Valley (HDN) | 3 | Mesa Airlines, Inc. | — |
| Hermanos Serdan International (PBC) | 3 | United Airlines | — |
| Findel (LUX) | 2 | Cargolux S.A. | — |
| Midway (MDW) | 2 | Frontier Airlines, Inc. | — |
| Ted Stevens Anchorage International Airport (ANC) | 1 | Cathay Pacific | — |
| Flamingo International (BON) | 1 | United Airlines | — |
| Minot International Airport (MOT) | 1 | CommutAir | — |
| Milano Malpensa (MXP) | 1 | Cargolux Italia S.p.A. | — |
GET /routes returns each scheduled flight from IAH: airline, flight number, departure and arrival time, duration, days of operation and aircraft type.
https://www.goflightlabs.com/routes?access_key=YOUR_ACCESS_KEY&dep_iata=IAH
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