Wander through Mayan ruins, explore your natural surroundings, and delve into the culture of El Salvador.

Delta Air Lines is offering cheap flights from Atlanta to San Salvador for as low as $249+ one-way. Deals are good for travel through June 30th, but you have to purchase your airline ticket by June 3rd, so act fast.

Visit Delta Air Lines Destinations for more info.

American Airlines is featuring vacation packages to sunny Puerto Rico. Spend your days relaxing beachside and spend your nights lounging in a 4-star resort.

With American Airlines, you’ll find hotel stays for as low as $96+/night per person. You have to act fast, though, because these deals only last until tomorrow. However, they’re good for travel through the end of June.

And remember it’s Puerto Rico. That means no passport, no hassle.Visit American Airlines Vacations for more details.

Yesterday, we highlighted Spirit Airlines’ 30/30/30 Challenge and the $30+ airfares that go along with it. Well, today is the last day you can take advantage of these $30+ airfares to a range of destinations. You’ll also find airfares that give you 30% off.

Visit Spirit Airlines Sales for more details, and act fast.

The folks over at inFlightout are looking out for their local Bay Area travelers. They’ve tipped everyone off to a promotional code that can save you 10% on flights within the Continental US on American Airlines.

You need to purchase your airline ticket by June 6th and complete travel by June 20 to take advantage of this travel deal. Book through American Airlines online, and enter promo code: AAMOBI10

Alaska Airlines is now offering a great deal on vacation packages, and no, it’s not to Alaska, but to Loreto or La Paz, Mexico!

If you book a vacation package with Alaska Airlines to one of these locations you can save $50 per paying adult for up to $200 in savings per reservation. You will need to book quickly, because this deal runs out on May 30.

Make sure you enter the promo code ASMXSAVE when you book online. Go to alaskaair.com/vacations for more information.

You have to hand it to Spirit Airlines. Even in the midst of financial issues, rising costs, and a seemingly ever-changing air travel landscape, they still manage to hit you with some of the grandest marketing campaigns. They have caused controversy with their MILF and WTF airfare sale promotions, and they continue to crank out their ever-popular $9+ airfare sales.

Spirit’s latest marketing push comes in the form of a challenge. Their “30 Days, 30 Tips, 30% Less Fuel Consumption (and you could also lose 30 pounds!)” sets forth a 30-step plan for us all to follow. Spirit suggests that by following these steps, we’ll cut down on fuel consumption, save money, and yes, even drop a few pounds.

Along with the challenge, Spirit Airlines is offering some great travel deals. You can find $30+ one-way airfares to a range of destinations, and you can save $30 on airline tickets to a range of other destinations.

Keep reading for a look at the first three challenges Spirit has laid out for us, and visit Spirit Airlines - Cheap Tickets for the full list and more info on their 30/30/30 Plan…

jetBlue is helping travelers from Austin save a little extra this summer . Hit hot summer destinations like Fort Lauderdale, Orlando, Long Beach and San Francisco and save $10 on both legs of the trip.

Purchase your airline ticket by May 30th, and enter the promo code: JETTINGAUSTIN to take advantage of this deal.

Visit jetBlue Promo for more details.

If you missed the last AirTran airfare sale, don’t fret. The low-cost carrier is offering cheap flights to and from cities all over the country for as low as $49+ each way.

You’ll find deals to destinations from Akron to Wichita (no Xs, Ys, or Zs, though). You have to purchase your airline ticket by June 3rd, and you can travel through November 5th.

There are general and city-specific restrictions, so visit Air Tran Sale for more details.

That summer trip to London you’ve always wanted can finally come true with a little help from Delta Air Lines. The carrier is currently offering one-way airfare from New York- JFK to London-Heathrow for $339+.

Your ticket must be purchased through Delta.com by June 2nd for select travel day to Heathrow from June 2nd to September 3rd. Go to Delta Fare Sales for more info.

You’ll be drinking tea and eating scones in no time. Remember, pinky out!

Have you been dreaming of that perfect beach filled holiday? Now is your chance to make that dream come true!

Continental Airlines is offering a cheap round trip airfare from Houston, TX to Acapulco, Mexico for only $149+. You can also get a hotel and car for an extra $72+. Better hurry though, this deal is only good through May 31st, then the price skyrockets to $663+ the next day.

Just think, now you can lie on the beaches watching the waves, and you’ll have money to spend on all those fancy drinks with the brightly-colored umbrellas.

Visit Continental Specials for more details.

Southwest Airlines wants you to leave you to take to the skies and leave your car behind on your next short trip. With gas prices as high as they are, flying Southwest might actually be cheaper than driving in some cases.

Southwest Airlines’ $29+ one-way airfares are available for short hop flights all over the country including Austin to Houston, Chicago to Indianapolis, Spokane to Seattle, and more. 21-day advance purchase is required to take advantage of these deals.

Visit Southwest Airlines Hot Fares for more details.

Northwest Airlines has a promotion through July 31 called Miles-to-Go.

If you join their miles program, you can earn up to 50,000 “bonus miles” from a variety of their partners (see all the details here).

Plus they’re giving away 1,200 prizes including a trip for 4 to Paris.

Mais oui!

I like to think of Memorial Day as a holiday that uniquely combines remembrance with family time.

No matter how you spend the day, we hope it’s a good one for you.

…from your friends at FareCompare.com

This is your last chance to take advantage of Virgin America’s summer airfare sale. You can find cheap flights for Virgin America routes on both coasts.

Visit Virgin America Early Summer Sale: Book by May 23 for more details.

Yesterday, we highlighted Spirit Airlines’ $9+ each-way introductory airfare between Fort Lauderdale, FL and Columbia, SC. However, that’s not the only $9+ airfare out there. Spirit Airlines is offering “Scorchin’ Summer Fares” to/from cities throughout the US and more.

You’ll find $9+ flights to New York, Orlando, Panama City, Port Au Prince, and Myrtle Beach just to name a few. There are also cheap flights ($19+ and up) to a range of other destinations.

Visit Spirit Airlines Sales for complete details and a full list of their $9+ airfares.

Spirit Airlines is kicking off new flights between Fort Lauderdale, FL and Columbia, SC with their famous $9+ each-way airfares.

Yep, $9+ airfares. Now, you’ll still have to deal with taxes and fees, so you’re going to spend a little more than $9 by the time you get out the door (about $60 Roundtrip when all is said and done), but these are still really cheap flights.

These special $9+ one-way airfares are only available for specific travel dates, so keep reading to see when you can take advantage of these ultra low prices…

WestJet is offering cheap summer flights from Calgary to New York (EWR) for travel on Wednesdays, Thursdays, and Saturdays from June 2nd - September 30th.

If you want to hit the City that Never Sleeps, you can find airfare as low as $129+ CAD each-way (about $131+ USD). After taxes and fees, your roundtrip airline ticket will cost about $460 CAD ($466 USD). Flights on this route during this time of year can easily go over $700+, so if you have some flexibility you can save with WestJet’s New York airfare sale.

Keep reading for airfare comparison and booking details…

Two days ago, we highlighted cheap summer flights to Frankfurt on United Airlines, but the carrier is offering deals to a range of other European destinations for travel in July, August, and September.

Along with Frankfurt, you can plan your dream vacation to Amsterdam, London, Munich, Paris, Rome, and Zurich. You have to purchase your airline tickets before June 11th to take advantage of these deals with.

7-day advance purchase is required, and restrictions vary based on destination, so visit United Airlines Fare Sales for more details and a full list of European travel deals.

Alaska Airlines is set to add two new routes, and they’re offering cheap flights to kick things off. Starting on October 26th, Alaska Airlines will offer flights between Seattle and Minneapolis. They’ll follow this up on November 17th with flights between Seattle and Kona on Hawaii’s Big Island.

You can start purchasing airline tickets for these new routes today. Alaska Airlines’ introductory offer features one-way fares of $139 between Seattle and Minneapolis and $229 between Seattle and Kona. These deals will only last until June 5th, so take advantage of the offer while you can.

Visit Alaska Airlines Newsroom for full details.

Northwest Airlines is making it a little easier for you to get from Texas all the way up to Canada. They’re currently offering cheap flights from DFW to Toronto for as low as $181+ R/T (about $263 with taxes and fees).

This is close to $300 less than the previous lowest airfare filed for this market in recent airfare feeds, so the savings are substantial.

Keep reading for booking details and get ready to head to the Great White North…

Aer Lingus is offering substantial savings on business class airline tickets to Ireland.

Joe Brancatelli of Joe Sent Me reports that you can fly business class for as low as $799+ one-way to Dublin.

Check out our First Class Travel blog for all of the details.

US Airways has kicked off daily flights from Charlotte to Daytona Beach. In celebration, they’re offering cheap flights to Daytona from a range of departure cities including New York, Philadelphia, Chicago, and Boston.

These travel deals are good for select dates through November 12, 2008. Restrictions and advance-purchase requirements vary depending on departure city.

Keep reading for sample airfares to Daytona Beach on US Airways…

Do 24-hour airfare sales give you too much time to dilly-dally? Are you looking for a faster, more focused sale? If so, Northwest Airlines WorldVacations is the site for you. In honor of their 20th anniversary, they’re offering a 20-hour sale on vacation packages to Puerto Vallarta and Riviera Nayarit.

You can save up to $400 on airfare and hotel packages to both destinations, so you can enjoy a bit of luxury and world of culture for less. But, you can’t procrastinate on this one. Northwest WorldVacations 20-hour sale ends today.

Use the promotional code WV8263 when booking. Visit Northwest Airlines WorldVacations for complete details.

24-hour airfare sales seem to be all the rage these days. Airlines are increasingly giving travelers one or two days to cash in on travel deals or last-minute vacation packages. Sure, it’s a good PR bump for the airline, but it can also save you some money, so won’t complain.

The latest 24-hour airfare sale comes from Spirit Airlines. They’re offering $24 off airline tickets for travel on May 28, 2008 through February 28, 2009. You have to act fast, because this deal will be gone by 11:59 PM ET tonight.

When booking online, enter the promotional code 24HOURS and save $24 on your roundtrip flight. Visit Spirit Airlines Reservations for more details.

If you’re willing to make a stop, you can find cheap flights on Delta Air Lines from Chicago O’Hare to Indianapolis for as low as $80+ (about $122 with taxes and fees) on select travel days in June. Even with one-stop, this route can see airline tickets soar past $300+ during the summer, so the savings are pretty serious on this one.

Keep reading for booking details…