Airports in the Houston, Texas, area have started to cancel flights ahead of Hurricane Harvey.
William P. Hobby Airport has canceled 33 flights, and reported 20 delays, according to the Houston Airport Systems.
George Bush Intercontinental Airport, also located in the Houston area, canceled 37 flights, and reported 27 delays.
Bush is the 12th busiest airport among 800 US airports, with about 967,700 passengers per day traveling through.
The airline seeing the largest amount of cancellations currently is Southwest Airlines, which is the largest carrier for Hobby, according to data service FlightStats.
Southwest posted a travel advisory earlier in the week amid news of the inclement weather for Austin, Corpus Christi, Houston, Harlingen and San Antonio, Texas. The airline also started implementing weather waivers, which allow passengers traveling to coastal Texas airports to alter travel bookings without penalties.
United Airlines, which is the top carrier at Bush, also implemented waivers for passengers traveling to those Texas airports. United brought in assistance from other airports on 24 August to help manage passengers both during and after the storm.
The Corpus Christi Airport, which is serviced by American Airlines, Southwest and United, has also canceled flights as the hurricane is expected to make landfall there late today or early tomorrow.