Usually they have membership fees and sometimes minimum travel requirements. Don't spend the money if you don’t travel often. Programs vary as to what is included. Check the benefits. A few airlines have multiple levels of membership. Check the entry level first. Also determine where the clubs are available (on the routes that you fly ?)  A frequent flier will gain the most benefits. Below are some of the perks offered by airline VIP clubs. 

• A shorter check-in line. If you need help, you’ll get it first.

• The best opportunity for first class or other upgrades.

• Less likely chance of being bumped.

• In case of cancellations or delays, a member will be at the top of the list for priority handling.

• A special private waiting area, usually the club itself. You can enjoy comfortable seating and can use the business services available.

• Special deals offered to VIP club members.

• The possibility of a more generous luggage allowance.

• A more attentive Customer Service agent, in the event of a problem.

• Always be flexible. Consider alternate dates and airports. Slight changes in routes or days traveled may save  money and could even mean more points !

• If a seat is not available on your favorite airline, consider using a partner. Most airlines have partnership agreements that will earn frequent flier points on the primary airline.

• Use hotels that reward your frequent flier program. Charge meals and other services at the hotel to your room bill. This will add to your points earned.

• Use rental car companies that participate in your frequent flier program.

• Only use credit cards that benefit your frequent flier program.

• Watch for any special marketing programs that contribute to your frequent flier program.

Check the fine print.  Be sure that you follow the rules completely or you could loose your privileges.  Always keep boarding passes until the account shows points credited for each flight. Remember to pose the following questions to an avoid unpleasant surprises.

• What is needed to earn points ?

• Do other airlines or travel vendors contribute mileage to your frequent flier program ?

• What are the minimum points credited for short flights ?

• Is there an expiration date on points earned ?

• How rigid are the blackout periods for using the rewards ?

• Does the airline clearly inform you in the event of a change in  the rules ?

• Are there restrictions on the number of passengers that can use mileage on a particular flight ?

• Are you allowed to share your rewards anyone ?

• If so, what is the process ?

• Can I use my rewards on international flights also ?

• What are any other limitations imposed the use of your rewards ?

Not necessarily. Membership can be rewarding,  but don’t get too enamored of the program. Never overspend for tickets just to gain mileage or points !  A free ticket is supposed to be free, not subsidized by previous "non-bargain" purchase. Always shop for the best fare, regardless of mileage awards. Join several programs to be able to have flexibility, earn miles and still be able to find the best prices available.