Basically my site was a train wreck. Nothing was working right and I had a ton of problems I just didn't know how to fix. Long story short I signed up with Zen WP and they fixed every single problem I sent to them. Amazing service, my account manager Garon Coffman is the best Wordpress technician out there.
Flighthub seems to be pretty user friendly and the prices are never higher than what the airlines have. The only thing you should watch out for is that if you choose to select your seats, they will charge you $10-$20 for it. However, the seats aren't guaranteed and the the fee is charged by FlightHub, not the airline. Book you flight and then contact the airline for seats.