Here’s one New Year’s resolution you can keep — to save on airfare — and Southwest makes it easy.

Airfares begin as low as $49 one-way for travel Tuesdays and Wednesdays or $59 one-way for travel other days. Coast-to-coast flights start as low as $89 one-way.

You must book by Jan. 19 and there is a 14 day advance-purchase requirement. Some sample ticket prices include:

• Baltimore to Orlando, $49 one-way
• Chicago to Ft. Lauderdale, $59 one-way
• Ft. Lauderdale to Los Angeles, $89 one-way
• Baltimore to San Diego, $99 one-way
• Chicago to Los Angeles, $99 one-way

Better Yet: Most of the major airlines have matched on Southwest routes!

Searches on FareCompare.com for travel on Southwest routes shows show you the starting cheapest base price (at the top). A quick click and you can pick your seats on Southwest.com (and compare others).

Travel is good from Jan. 15 through the end of April — yes that includes Spring Break.

And don’t forget: Southwest begins flights to Minneapolis in early March, and yes they are included too.

Indeed this seems like a good start of “Year of the Airfare Sales“.

Over on RickSeaney.com, FareCompare’s CEO breaks down what Southwest Airlines entrance into the Minneapolis market will mean for the legacy carriers, and more importantly, what it will mean for travelers:

“The legacy airlines will quickly have to restructure their airfares, by offering one-way fares instead of the 2 night minimum stay roundtrip fares they currently file - likely matching Southwest’s new price points.”

To learn more about Southwest’s spring airfares between Minneapolis and 56 cities throughout the country, read Rick Seaney’s “Southwest Airlines Files Minneapolis Airfares - Let the Fare Wars Begin.”

Midwest Airlines, the carrier that brought you fresh-baked chocolate chip cookies, is once again “redefining” coach by bringing their Signature seating to their entire fleet and creating what they call “Midwest Class.”

The Signature Seat has been available on select Midwest Airlines’ MD-80 flights for an additional cost of $65. However, with Midwest Class, there will actually be additional payment options for travelers who want a little more legroom and a bit of added comfort:

“Travelers paying higher-value refundable fares will be assigned a Signature seat, if available, at no additional charge. Or, find the lowest available fare and secure your Signature seat for a modest fee at time of booking. Finally, you’ll still be able to choose Signature seating when you check in, as you can on our MD-80 flights today.”

Visit Midwest Airlines News for more details. For more on the “more legroom” options the airlines are offering, check out How Much Would You Pay for Legroom?

Spirit Airlines is advertising a BSD sale (Big Spirit Deals) and they are showing flights for as low as $19+ each way (one of those fares is from Ft. Lauderdale to the Bahamas).

You have to book by midnight on May 19^th, and the sale covers a lot of locations at prices from $19+ to $139+ each way.

Take a look here for more information, and note that travel dates vary.

Just a quick heads-up for all you American Idol fans out there. JetBlue is part of a sweepstakes that will send a couple of lucky people to see American Idol (the show before the finale). Visit JetBlue for all of the details.

With new Open Skies agreements in place, we will start to see more routes and flights open up between the US and Europe on a range of airlines at the end of March. While all of these new flights will be touted by the airlines, none get them more excited than new flights to London Heathrow. London Heathrow continues to be the hub for international business travelers, and US-based carriers want as strong a presence their as possible.

American Airlines and Continental Airlines have both announced major changes involving Heathrow. Keep reading to see how they might affect you…

Not long ago, I set out a trip to try to reach all 48 states in the Continental U.S. over the course of 11 days. In the end, I made it to 43 states (and D.C.). It involved taking 5 to 7 flights on many days, fighting blizzards, falling deathly ill in the great state of Montana, and basically dealing with a lot of misery. Oh, did I mention I was wearing a Santa suit the whole time?

During my Grumpy Santa tour, I learned to latch onto the little things; the small joys in a day filled with nothing but flying. One of those joys was Midwest Airlines chocolate chip cookies. Now, the good people of Kansas City can feel a bit of that joy without ever even having to step on a plane…

FareCompare CEO and all around travel guru, Rick Seaney, is joining ABCNews.com as a weekly columnist. In upcoming weeks, Rick will be sharing insider tips on how to find cheap flights, first class travel deals, affects that changes in the airline industry will have on average air travelers, and much more.

Check out Rick’s first ABCNews.com column, “Do Airline Mergers Mean Higher Prices?” And please, leave some comments on the ABC site.

Aloha Airlines has reduced airfare out of Orange County (SNA) to Honolulu in order to compete with ATA, who still offers the lowest airfare out of LAX to Honolulu.

Aloha dropped prices about $43, and at least for travel over the next few months, this should keep fares close to those of ATA’s.

Aloha Airlines has garnered a reputation for comfort and good service, and it will be interesting to see if they can give ATA a run for its money.

Starting April 14, Hawaiian Airlines will be offering non-stop service to Manila. To begin, there will be four weekly flights out of Honolulu to Manila (Mon, Tues, Thurs, Sat,) and four weekly flights from Manila to Honolulu (Sun, Mon, Wed, Fri).

Tickets are available now for appx. $569 each way (including fees and surcharges). This should prove to be a popular route, so be sure to check out available dates before making any plans.

JetBlue has joined the New Year’s fun with an airfare sale of their own. The “Life is Short Sale” offers deals as low as $69+ each way between JFK and West Palm Beach, $59+ each way between Newark and Orlando, $99+ each way between Chicago and Long Beach, and much more.

JetBlue is offering some great airfare deals, but you have to act soon. Life is short, and so is the sale. Travel must be booked by January 11.

The New Year’s airfare deals keep coming in. Midwest Airlines is offering savings of up to $200 per reservation for travel/hotel for all of their destinations when you book through Midwest Airlines Vacations.

Keep reading for Midwest Airlines’ step-by-step process for saving money on your dream vacation, and catch a glimpse of possible Midwest airfare deals to come:

US Airways has not only matched the airfare sales rolling through today but they have extended it to savings well below other airlines in several city pairs.

The bulk of these deals are for travel in January, some of the best deals from this morning are show below:

United Airlines has matched the airfare sales today and dropped prices in several city pairs like Los Angeles to Raleigh Durham at $198+rt.

The major of the airline tickets you can purchase on these sale airfares is for travel in the month of January (any day of the week) - some of the best deals from this morning are shown below:

And the good deals keep streaming in from Northwest Airlines. More airfare sale city pairs are well below all other airlines in their respective city pairs.

A few of the travel periods on these airfare extend out through spring, some of the best deals in the last airfare distribution are show below:

Frontier Airlines hasn’t really matched the airfare sales started today but they have a few good deals that I thought I would highlight.

The list of their best deals today includes:

Delta Airlines has matched many of the airfare sales started by Northwest Airlines for travel in the month of January.

Airline tickets on these sale airfares can be purchased for travel on any day of the week in January.

Some of the best deals include (savings noted below all other airlines):

Continental Airlines has matched the Northwest Airlines airfare sale in dozens of city pairs - not as broad as Northwest across the board sale.

Travel is from January 5, 2008 to February 28, 2008 on Tuesdays, Wednesdays and Saturdays.

Blackouts apply on Presidents day weekend, some examples of these great deals include:

American Airlines has matched the Northwest Airlines Sale is hundreds of city pairs.

Travel is for the month of January on every day of the week, some examples include:

Last night in the 8:00pm airfare distribution AirTran Ariways filed a 14-day advance purchase airfare sale for travel commencing January 5th, 2008.

Travel must be completed by February 27th, 2008.

You must travel on Tuesday, Wednesday or Saturday.

Blackouts apply for Presidents Day weekend February 15th-18th, 2008.

We noticed this airline ticket sale in over 1,000 city pairs — the sale has been posted on the AirTran website, some of the best airline ticket prices include:

Last night in the 8:00pm airfare distribution Northwest Airlines filed a 7-day advance purchase airfare sale for travel commencing January 8th, 2008.

Travel must be completed by March 9th, 2008.

A 3 night stay is required and you must travel on Sunday, Monday, Tuesday, Wednesday or Thursday.

Blackouts apply for Presidents Day weekend February 15th-18th, 2008.

We noticed this airline ticket sale in over 10,000 city pairs and it has not been posted yet to the Northwest Airlines website some of the best airline ticket prices include: