Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Invercargill to Houston as you normally would.
If you book a flight to Houston from Invercargill, you will be flying from Invercargill, which is the city’s only airport. Invercargill (IVC) is located 2.2 km from the centre of Invercargill. There are 0 flights from Invercargill to Houston per day from 0 different airlines.