Mexico's VivaAerobus will launch service on two new routes to Houston later this year.
The Monterrey-based carrier will initiate flights between Guadalajara and Houston from 20 November, operating four times weekly on the route.
It will then begin service between Cancun and Houston from 3 December, offering five times weekly flights.
Separately, VivaAerobus will add an additional daily flight to its service between Monterrey and Houston from December. The airline operates six times weekly between the two cities, schedules in Innovata show.
VivaAerobus' new Houston flights will end the monopoly of United Airlines on both routes. United operates 30 flights weekly between Houston and Guadalajara and 17 weekly flights between Houston and Cancun.
VivaAerobus is the only airline operating between Monterrey and Houston currently, but Aeromexico has announced it will begin Houston-Monterrey service from 3 November with Embraer 145 aircraft. United offers seasonal Monterrey-Houston flights.
VivaAerobus is in the process of transitioning to an all-Airbus A320 fleet from Boeing 737s.