Searching for airfares doesn't have to be a gamble

Searching for airfares often seems like a game passengers are set up to lose.

Prices change from day to day, even minute to minute. Scouring multiple websites for the best deal can be overwhelming. And after you book, there's no guarantee that you got the best price.

"You just don't know when to pull the trigger. It's not like buying anything else I can think of," said George Hobica, founder of Airfarewatchdog.com.

Fares can fluctuate significantly in just a few hours. One Delta flight from New York to Los Angeles jumped from US$755 to US$1,143 from a Friday to Saturday in late April, then fell to $718 on Sunday.

The flight was one of a dozen The Associated Press tracked over three months for a July 16-22 vacation. The No. 1 finding: Avoid booking tickets on weekends. It's the most expensive time to buy.

There's no way to guarantee the best fare. But before booking, travellers should heed this additional advice:

Book on Tuesday, Wednesday and Thursday. That's when airlines most often offer sales;

Buy in advance, but not too early. The best time is four to six weeks before travelling. In general, prices for any given flight are highest eight to 10 weeks and two to three weeks in advance;

Embrace social media. Airlines are giving more benefits, like exclusive sales, to travellers who interact with them on Twitter and Facebook. Those specials are often gone within hours; and

The so-called discount airlines - JetBlue, AirTran, Southwest and Frontier - adjust their fares less frequently than other airlines, so you can feel more confident locking in a price. But their prices aren't always the lowest. Researching multiple airlines' fares is the only way to get a good deal.

It wasn't always this complicated.

Before the airlines were deregulated in 1978, airfares were approved by the government. Prices were consistent and printed in timetables. But because air travel hadn't been embraced by Americans and was something of a luxury, planes were often less than half full.

Deregulation allowed airlines to set fares and routes on their own. In the early 1980s, American Airlines started selling empty seats at a steep discount. The aim was to fill up planes and compete with new discount airlines such as PeoplExpress.

To prevent business travellers from trading down to cheaper tickets, the airlines required that fliers buy two to three weeks in advance and spend a Saturday night at their destination. The discount airline ticket was born.

Today, sophisticated computer programmes analyse travel data and set a range of ticket prices so airlines can get the most money out of each flight. Prices are generally higher for seats sold at the last minute, which are usually bought by business travellers. Refundable tickets tend to be the most expensive, and cheap fares come with lots of restrictions.

Other factors go into the price, too: How fast are tickets selling compared with previous years? Is there a conference or special event in the destination city? And fares are often adjusted to match other airlines' prices.

There can be as many as 20 prices on any given flight. Airline executives say that all that helps them boost revenue by three to six per cent. If they price tickets too low, the airline can lose money. If prices are too high, seats go unsold.

- AP