If you're like most travelers, you've probably never considered shipping your luggage ahead of you instead of carrying it with you on a trip. Sure, over the holidays you might mail a few gifts to your destination instead of having the TSA root through your suitcase and ruin your perfect wrapping job, but otherwise it probably seems more practical, convenient and economical to check your bags with your airline. But is this still the case?

Most major U.S. airlines are now charging travelers to check a first or second bag on domestic flights -- even though few will guarantee that your bag will actually make it where it's going on time. (If you thought luggage delays were frustrating before, imagine how you'll feel if your airline loses a bag that you paid $35 to check!) Ultra-budget carrier Spirit Airlines has added a fee for carry-on bags as well. And no matter which airline you're flying -- if your bag is overweight, be prepared to shell out $50 or more in penalties on top of whatever fees you're already paying for the privilege of checking that bag.

In light of these changes, shipping your suitcase may suddenly look like a more attractive alternative. While it's still generally more expensive to ship a suitcase than to check it, the latest airline fees have narrowed the cost differential -- and what you gain in convenience and reliability may be worth paying a few extra bucks.

To help you "weigh" your options, we've outlined the pros, cons and costs of checking bags versus shipping them. We've included information on standard delivery services (such as UPS and FedEx) as well as specialty luggage handlers like Luggage Forward and Luggage Concierge.

One important note: Shipping is generally not an economical option if you're flying overseas. Many airlines still allow travelers to check at least one bag for free on international flights, and shipping a bag outside the United States can easily cost as much as your airfare. The information below is geared toward domestic travelers.

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Checking Bags
Who: All major airlines

Price: This varies by airline. On domestic flights, most airlines charge passengers to check a single bag. These airlines include American, AirTran, United/Continental, Delta, Spirit and US Airways, all of whom charge $20 - $25 each way for the first bag you wish to check (you will sometimes pay less if you prepay the fee online at the airline's Web site). JetBlue and Southwest continue to allow passengers to check one bag free of charge.

Beyond that first bag, you'll have to pay a fee on every airline except Southwest; the fee varies from $25 to $50 each way depending on airline, itinerary, and whether you check your bag at the airport or online.

Spirit's fee applies to any carry-on bag that won't fit under the seat in front of you and ranges from $20 to $45 depending on whether you're a member of its $9 Fare Club and whether you pay the fee online, over the phone, at check-in or at the gate.

In most cases checked bag fees do not apply to elite fliers, passengers who have paid full fare on a particular route, and travelers flying to some international destinations. Check your airline's baggage policy for exact terms and conditions.

Pros:

Despite the fees, checking your bags is usually still the cheapest option for travelers bringing only one or two pieces of luggage.

Checking bags is convenient if you are a last-minute packer, since you don't need to make advance arrangements for dropping off your bag or having it picked up.

When the system works properly, your luggage departs and arrives at the same time you do, no matter what time or day of the week it is.

Cons:

Even if you pay a fee to check a bag, there's no guarantee that the airline won't lose or mishandle your luggage.

You'll have to wait in line to check your bags before your flight, and then wait again at the baggage carousel after you arrive. (Got a stopover? You may even have to do this more than once!)

Schlepping your own bags to and from the airport can be tiring, and it's less convenient than having a shipping service do all the work for you.

If your bags are overweight or you're checking more than two items, you could pay dearly in airline penalties -- making shipping a more economical option.

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Standard Delivery Services
Who: FedEx, UPS, DHL, the United States Postal Service and other all-purpose shipping companies

Price: The cost varies widely based on the size and weight of your bag, the distance it needs to travel, and the speed of service that you select. To send a 40-pound suitcase from New York to San Francisco in four days, UPS quoted us a fee of $58.20. Want it there in three days? The price skyrockets to $137.46.

Raise the weight of the bag to 60 pounds, and UPS charges $76.31 for four-day delivery -- which could be less than the penalties you'll pay for exceeding your airline's weight limit. (For example, Delta charges $90 for bags weighing between 51 and 70 pounds.)

Pros:

These services are quite reliable and will give you a tracking number so that you can keep tabs on the whereabouts of your bag.

They're generally less expensive than specialized luggage services, and (as in the example above) could be more economical than checking a bag with your airline under certain circumstances.

Shipping your bags ahead of time allows you to skip check-in lines and waiting around at baggage claim.

Cons:

UPS, FedEx and the like do not offer as much personal service as the smaller luggage shipping companies.

You may need to drop your bag off at a designated shipping location or arrange for a special pick-up several days before your trip.

Service may only be available on business days.

In most cases, shipping your bags will be pricier than checking them on your airline.

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Luggage Shipping Companies
Who: Luggage Forward, Luggage Concierge, Luggage Free, Luggage Club, Sports Express and many others

Price: Luggage Concierge will send a bag up to 45 pounds from New York to San Francisco for $126.09 via economy ground service. Luggage Free recently introduced an "Economy" service that costs a flat fee of $70 for three-day shipping, as long as your suitcase weighs 50 pounds or less. (For non-Economy service, Luggage Free charges $2 per pound for five-day service, plus a $50 pick-up fee.)

Pros:

Because these companies are fairly small, you'll get a lot of personal attention. If your itinerary changes, an agent will handle all the details of rerouting your luggage.

These companies are experienced at dealing with luggage in all shapes and sizes, including skis, surf boards, golf clubs, bicycles and monster-sized bags.

The luggage shipping services generally guarantee that your bags will arrive on time and unscathed -- which is more than you can expect from an airline!

As with the standard shipping companies, using these luggage shipping companies will allow you to bypass check-in lines and baggage carousels. Instead, your luggage will be waiting for you at your hotel when you arrive.

Cons:

Personalized service comes at a price. These companies will usually be your most expensive option.

Like the standard delivery companies, these agencies typically do not deliver on weekends (though some Saturday services may be available).

You'll need to plan ahead enough to pack early and arrange for a pick-up time before you leave for your trip.

Would you rather skip the hassle altogether by simply packing lighter? Check out our helpful tips for What Not to Pack.

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--written by Sarah Schlichter