Planes evacuate travelers stranded at Houston airport, flying them to Dallas, out of storm zone Roads to Hobby and Bush airports were submerged.

 -- Travelers stranded at Houston's William P. Hobby Airport amid the deadly hurricane that devastated southeast Texas this weekend were tonight flown to Dallas out of the storm zone.

Over 400 passengers had been stranded at Hobby Airport and at least 100 passengers were stranded at George Bush Intercontinental Airport as Hurricane Harvey drenched the city’s roadways and overwhelmed homes, a Houston Airports spokesman told ABC News this afternoon.

The roadways to both airports were submerged underwater, so airport and airline officials were scrambling to figure out how and when to evacuate travelers, the spokesman said. No structural issues were reported at either airport, the spokesman added.

Then, starting late this afternoon, the flooding receded from the Hobby runways enough to allow Southwest Airlines to get special permission from the Federal Aviation Administration to fly five rescue flights to Dallas Love Field airport.

The flights evacuated 486 passengers as well as some Southwest employees.

Southwest said the passengers will be put in hotels until they can be rebooked.

An airport official told ABC News that after the Southwest rescue flights took off, only 25 people remained at Hobby airport this evening, 17 of whom are Houston-area residents.

Before travelers left Hobby Airport, among those stranded there today was a Chicago family of four: Micah Garb, his wife and their two teenagers daughters.

Garb posted a video on Instagram this evening of the line of passengers who seemed to be calmly waiting for what Garb says was expected to be "rescue flights."

Garb also wrote on Instagram that his fellow travelers who were lined up to get on flights "spontaneously" applauded for the food service staff who kept them fed overnight.

Garb told ABC News his family boarded a rescue flight headed to Dallas.

ABC News' Jeffrey Cook, Jessica Church and Whitney Lloyd contributed to this report.