Denver to St. Thomas, US Virgin Islands $261 round-trip, incl. all taxes

This fare is available for travel on select dates in March, April, and June. Other dates can jump in price to over $400 round-trip!

AirTran's newest sale is valid for travel on Tuesdays, Wednesdays, and Saturdays through May 26. Fares require a 10-day advance purchase. Blackout dates are April 2, 3, 10, and 11.

All travel to/from Florida, Aruba, Cancun, Montego Bay, Nassau, and San Juan must be complete by March 10.

Fares must be booked by 11:59pm ET, February 9.

Fares include:

Atlantic City to Ft Lauderdale $148 round-trip

Atlanta to San Antonio $188 round-trip

Branson to Tampa $158 round-trip

Boston to Jacksonville $128 round-trip

Buffalo to Richmond $128 round-trip

Baltimore to Kansas City $138 round-trip

Charlotte to Orlando $128 round-trip

Washington DC to Los Angeles $178 round-trip

Dallas to Orlando $148 round-trip

Detroit to Miami $138 round-trip

New York to Key West $298 round-trip

Houston to Philadelphia $168 round-trip

Jacksonville to Rochester $128 round-trip

New York to San Francisco $178 round-trip

Milwaukee to Richmond $148 round-trip

Minneapolis to Ft Myers $160 round-trip

San Antonio to St Louis $184 round-trip

USA 3000 has some swell new fares for fall/winter travel to Mexico, the Caribbean, and Florida. As the prompt on their site suggests, you'll have better luck snagging the cheapest fares if you're flexible with your travel dates.

Chicago to Cancun, Mexico $299 round-trip, nonstop, incl. all taxes

Cincinnati to Cancun, Mexico $378 round-trip, nonstop, incl. all taxes

St Louis to Cancun, Mexico $299 round-trip, nonstop, incl. all taxes

Chicago to Puerto Vallarta, Mexico $300 round-trip, nonstop, incl. all taxes

Detroit to Puerto Vallarta, Mexico $379 round-trip, nonstop, incl. all taxes

St Louis to Puerto Vallarta, Mexico $379 round-trip, nonstop, incl. all taxes

Chicago to Ft Myers $200 round-trip, nonstop

Cincinnati to Ft Myers $200 round-trip, nonstop

New York to Lima, Peru $256 round-trip, nonstop, incl. all taxes

This fare is valid for spring travel through late June.

Fight off those fall temps a little longer with a trip to St Thomas or St Croix. American just so happens to have a sale, good for Monday - Thursday travel through December 17. Fares require a 2-night minimum stay, with a maximum stay of 30 days.

All fares must be purchased by November 3, and include:

Nashville to St Croix $465 round-trip

New York to St Thomas $292 round-trip

Miami to St Thomas $230 round-trip

Chicago to St Croix $439 round-trip

Norfolk to St Thomas $407 round-trip

San Francisco to St Thomas $453 round-trip

American Airlines is back with their standard Caribbean & Latin America Sale from Miami and Ft Lauderdale. Fares are valid for travel through December 10, Monday - Thursday, except for blackout dates November 20 - 30. Tickets require a 2-day minimum stay, with an allowed 30-day maximum stay.

Book by October 26, 11:00am ET. Fares include:

Miami to St Croix, USVI $344 round-trip, nonstop, incl. all taxes

Miami to Aruba, Aruba $346 round-trip, nonstop, incl. all taxes

Miami to Barbados, Barbados $380 round-trip, nonstop, incl. all taxes

Miami to Bogota, Colombia $347 round-trip, nonstop, incl. all taxes

Miami to George Town, Bahamas $305 round-trip, nonstop, incl. all taxes

Miami to Grand Cayman, Cayman Islands $281 round-trip, nonstop, incl. all taxes

Miami to Guatemala City, Guatemala $244 round-trip, nonstop, incl. all taxes

Miami to Managua, Nicaragua $249 round-trip, nonstop, incl. all taxes

Miami to Marsh Harbour, Bahamas $305 round-trip, nonstop, incl. all taxes

Miami to Medellin, Colombia $292 round-trip, nonstop, incl. all taxes

Miami to North Eleuthera, Bahamas $305 round-trip, nonstop, incl. all taxes

Miami to Panama City, Panama $234 round-trip, nonstop, incl. all taxes

Miami to St Kitts, St Kitts & Nevis $394 round-trip, nonstop, incl. all taxes

Miami to St Maarten, Netherlands Antilles $423 round-trip, nonstop, incl. all taxes

Miami to Treasure Cay, Bahamas $305 round-trip, nonstop, incl. all taxes

JetBlue is back with another amazing 1-day only Sample Sale. We're talking coast-to-coast fares for as little as $158 round-trip, before taxes. Not bad, right? These deals are valid for travel from October 22 through December 16, on Tuesdays and Wednesdays. Fares to/from Florida are valid for southbound travel on Mondays, Tuesdays, and Wednesdays, and for northbound travel on Tuesdays, Wednesdays, and Thursdays.

Fares include:

Austin to San Francisco $158 round-trip

Boston to Los Angeles $158 round-trip

Boston to Chicago $118 round-trip

Charlotte to Boston $98 round-trip

Richmond to Boston $88 round-trip

New York to Burlington $78 round-trip

New York to Los Angeles $178 round-trip

Chicago to New York $118 round-trip

Phoenix to New York $178 round-trip

San Diego to New York $178 round-trip

San Francisco to New York $158 round-trip

Here comes another $9 Fare Club Sale from Spirit. Yes, it is possible to snag a $9 one-way fare, or an $18 round-trip fare, as long as you're a member of the $9 Fare Club. Otherwise, round-trip fares will run you $58 or more. Dates are limited with fares this low, but it is possible to piece together a round-trip.

Fares include:

Atlantic City to Boston $18 round-trip

Atlanta to Ft Lauderdale $28 round-trip

Boston to Ft Lauderdale $28 round-trip

Detroit to Las Vegas $100 round-trip

Ft Lauderdale to Los Angeles $100 round-trip

Ft Lauderdale to Nassau $119 round-trip

Ft Lauderdale to San Juan $72 round-trip

Orlando to San Juan $73 round-trip

Travel dates vary by route so check Spirit for details. All bookings must be made by September 9.

American Airlines is once again offering discounted fares between South Florida and the Caribbean. The latest batch is good for Monday through Thursday travel through December 10, and all fares must be purchased by September 7.

Fares require a 2-day minimum stay and a 30-day maximum stay.

Miami to Grand Cayman $281 round-trip, incl. taxes

Miami to Aruba $346 round-trip, incl. taxes

Miami to Barbados $380 round-trip, incl. taxes

Miami to Guatemala CIty $244 round-trip, incl. taxes

Miami to Managua $249 round-trip, incl. taxes

Miami to Panama City $234 round-trip, incl. taxes

Miami to Port of Spain $232 round-trip, incl. taxes

Miami to San Jose $235 round-trip, incl. taxes

United's Mexico City sale is good for travel through October 31. All fares must be purchased by August 31, and require a 2-night minimum stay, with a maximum stay of 30 days.

Boise to Mexico City $398 round-trip, incl. all taxes

Medford to Mexico City $428 round-trip, incl. all taxes

Reno to Mexico City $358 round-trip, incl. all taxes

Sacramento to Mexico City $467 round-trip, incl. all taxes

Spokane to Mexico City $462 round-trip, incl. all taxes