At the moment, there are zero airlines flying to Port Harcourt. Go through the results to find the right flights for you – you can adjust the filters to see find even more flights to Port Harcourt.
If you can't find a flight time that suits you, why not look at flying out from a different airport?
The distance between Houston George Bush Intercontinental Airport to Port Harcourt is 10911 km. You can see the various flight times in the results.
Searching by month, for instance, will show you the best time of the week to fly.