10 ways to get better air seats.

1. Join a frequent flier programThis is the most reliable tactic you can use. Providing your frequent flier number at the time of reservation goes a long way toward netting you a good seat, especially if you are a loyal, high-ranking member. If you don't already have your seat assignment when you arrive at the airport, present your number at check-in.

2. Buy your tickets earlyThe number of seats available for pre-assignment dwindles as the travel date approaches. If you can't buy your tickets at least several weeks in advance, be sure to check in online as soon as possible before your flight to select a seat, or arrive at the airport early if online check-in isn't available.

3. Consider purchasing a better seatSeveral airlines now offer economy-class seats with extra legroom for an additional fee. JetBlue has just introduced "Even More Legroom" seats on all its flights, allowing passengers to pay $10 — $20 each way for an exit row seat with 38 inches of seat pitch (instead of 34 — 36 inches on its regular seats). United offers Economy Plus Access to high-ranking frequent fliers and to any travelers who pay the annual fee of $349; this entitles travelers to five more inches of seat pitch in the coach cabin. (If any Economy Plus seats are still available at flight time, they can be purchased for $25 to $30 one way.)

4. Select your seat when you bookMost airline Web sites and major booking engines allow you to choose a seat when you purchase your ticket, or to return to your reservation after your initial purchase and make your seat selection later. In most cases this process is free, but AirTran charges $6 per person, per one-way trip to select your seat in advance if you're traveling on a sale or discount coach fare.

5. Confirm your seat at check-inMost airlines allow passengers to check in online 24 hours before their flight departs. At that point you can confirm the seat you've already chosen or even choose a better one.

6. Get to the airport earlyIf you arrive too late at your gate, you may lose your seat.

7. When in doubt, askOnce you reach your gate, ask whether any new seats have opened up. If other passengers upgrade to business class or don't show up for the flight, you may get lucky and grab a better assignment.
8. Be specificIf you know exactly what seat you're interested in, it can be easier for agents to get it for you. Instead of asking for an exit row or "a good seat," try asking for "12A" — you'll be more likely to get what you want (or an acceptable substitute).

9. Keep the agent informedIf you have a medical condition, let the agent know. Most will do their best to accommodate you.

10. Kindness countsApproach agents in a spirit of understanding. They hear complaints and demands all day. Treat them like human beings, and they may surprise you.