There are many including the airlines own websites. A few are at the related links.
Expedia, Orbitz, Travelocity and Priceline are probably the most common online sources where people look for cheap flight tickets. The website Fare Compare is another source to use when looking for cheap flight tickets.
One can buy ticket online for flights through Cathay by visiting their website, searching for the desired flight date, time, and destination, then paying for the tickets with a credit card.
I have heard the sooner you buy the tickets in advance the cheaper your can get the tickets. But I do know of a cheap website to buy airline tickets online at: www.orbitz.com.
You can purchase Busch Gardens Tickets online at the Ticket Master website. Alternatively, you can also purchase these tickets online from the Ticket Momma website.
Fandango.com
There are many places in which a consumer can buy Chicago bears tickets online. They have their own website and there are independent vendors as well.
Yes, you can buy Six Flags tickets online at their official website.
If you are looking to purchase Atlanta Falcons tickets, you can buy them online through the Falcons website or even at several online tickets sales sites.
Stubhub.com is indeed a legitimate site to purchase tickets online. They offer a guarantee that the tickets will be real.
Yes, buy them on your local cinema's website.
It varies, it can be stressful sometimes if you bought at a bad website.
I believe that you can for some kind of tickets. Some airport allows you to use foreign money to buy you flight tickets online. But I could not find anything else. One option for you is sign up for online banking that allows you to transfert your current money into us or cad.