Tips for Frugal Fliers: Patience. Wednesday.

Want to fly cheap? Time to break some bad habits.

Fares are getting cheaper, but the best prices still come to those who know the tricks of travel.

(Greg Pease/Getty Images)

Like buying the first cheap ticket you see or waiting until the last minute to book a fare.

As the economic slump continues and both business and leisure travel declines, fares are getting cheaper as airlines try to fill seats. A roundtrip ticket between San Francisco to Boston for instance, was selling on Feb. 4 for $238, down from $400 on Nov. 1. Even with such bargains, however, travelers need to know a few tricks to get the very best prices.

First, don't hurry.

Matthew D. Weyer sometimes spends hours researching fares online. Knowing what a ticket usually sells for allows him to spot cheap fares almost immediately.

Weyer sets up e-mail alerts for prices on the route he's shopping for at fare-watching sites like Kayak.com or Farecast.com. He finds out whether discount-carrier Southwest Airlines Co. flies a route. He also checks the ticket on booking sites like Travelocity or Orbitz.

Related

America's 5 Worst Airports: Survival Guide

Airplane Snack Wars: Peanuts Still Fly

Travel Trends in a Down Economy

Weyer recently shopped for a flight from Greenville, N.C., to Chicago, a ticket he said commonly runs around $410 round-trip. He was tempted at $280. He eventually paid $180 on Priceline.com. Weyer figures he spent about two hours spread over a couple of days searching for the ticket.

Weyer starts shopping as far in advance as he can, but doesn't book right away. He considers it safe to book between one and three months ahead of time. Airlines post their schedules anywhere from six to 11 months in advance.

The 24-year-old Chicago college student and software programmer once flew for only $9 on Spirit Airlines from Chicago to Ft. Lauderdale, Fla., and says the most he has ever paid for a ticket is $240.

Having a price in mind is good advice. A sense of timing helps, too.

If you tend to make travel plans during weekend downtime, reconsider. The best time to shop is late Monday or early Tuesday, some fare experts say. Airlines often start fare sales on Sunday night or Monday morning, said Rick Seaney of FareCompare.com. Those sales alone are fine if they include the flight you want. But other carriers generally match the fare sale by Monday evening or Tuesday morning, giving you more choices.