It’s proving to be another good week to shop for airfare. You’ll find new deals for Labor Day, specials across the country, and a few choice deals to some of the most beautiful beaches in the world:

Southwest Airlines Labor Day Airfare Deals

Start making plans for your next long-weekend.

Southwest Airlines has launched three days of Labor Day airfare deals. Find specials on flights to/from cities across the country for travel between September 2 and September 6, 2010. Purchase your airline ticket by 11:59 pm PT on July 15, 2010.

Visit Southwest Airlines for more details, and plan your quick getaway.

JetBlue Fall Airfare Specials

JetBlue’s fall line-up features a range of domestic flight specials, but you can also find airfare deals to international beach destinations like Cancun and Montego Bay. Airfare starts as low as $40+ each-way on some routes.

Check out domestic flights on JetBlue, Mexico flights on JetBlue, and Caribbean flights on JetBlue for their latest fall airfare deals from your hometown.

AirTran Airfare Sale

Speaking of international beach destinations, AirTran is back with a new airfare sale. Like JetBlue, AirTran has deals to a range of U.S. cities and a number of international beach locales like Aruba, Cancun, Montego Bay, and Nassau. Purchase your airline ticket by 11:59 pm ET on July 27 for travel through November 17, 2010. A 10-day advance purchase is required, and there are blackout dates.

Take a look at domestic flights on AirTran, Caribbean flights on AirTran, and Mexico flights on AirTran for their latest deals and to find the cheapest days to fly.