Avoid justairticket as much as possible
If it's possible, I would rate these guys as "minus 5". Avoid this aggregator as much as possible, because they are real scammers. You will see one price at the website, but after you submit a request for the reservation, you will be charged much more. Book directly with the airline, or with the trusted aggregators such as Expedia, CheapTickets, Booking, etc.