This past Tuesday was another big day for airfare sales (as is often the case with Tuesdays). JetBlue and Frontier Airlines launched new sales, adding to some of the great deals that are already up and running:

Southwest Airlines Airfare Sale ($49+ o/w and Up)

There is a little over a week left to take advantage of the latest airfare sale from Southwest Airlines

You have until 11:59 PM PST on August 5 to book their latest deals to/from cities across the country. Sale fares are good for Tuesday and Wednesday travel between September 7 and December 14, 2010. Airfare starts as low as $49+ o/w on some routes.

Visit Southwest Airlines for all of the details and a complete list of sale fares.

JetBlue Fall Airfare Sale

JetBlue’s “Shipping and Handling” fall airfare sale features deals to/from cities across the country including Austin, New York, Las Vegas, Fort Lauderdale, and many more. You can also find deals to international destinations like Montego Bay and Nassau. Airfare starts as low as $29+ one-way on some routes.

Purchase your airline ticket by 11:59 EDT on July 30 for select travel dates between September 7 and December 15, 2010.

Check out JetBlue to see their latest deals.

Frontier Airlines “Whole Enchilada Sale”

The Frontier Airlines “Whole Enchilada” airfare sale is back. It features airfare deals to/from a range of cities across the U.S., but it also offers some extras. Tickets are fully refundable, no advance purchase is required, and they’ll even waive some of those bag fees we’ve all grown to loathe.

The special is good for travel every day through September 30, 2010. Visit Frontier Airlines for more details.

American Airlines Fall Airfare Sale ($39+ each-way and Up)

You still have a couple of days left to take advantage of the American Airlines fall U.S. and Canada airfare sale.

Airfare starts as low as $39+ each-way on some routes. Purchase your airline ticket by July 29 for Tuesday, Wednesday and Saturday U.S. travel between August 17 and November 17, 2010. Deals to Canada are good for Tuesday, Wednesday and Saturday travel between August 5 and November 17, 2010.

Visit American Airlines to see the latest sale fares.