Airlines to Raise Frequent Flier Mileage Requirement : Travel: Led by United, many plan to hike the free trip conditions from 20,000 to 25,000 miles to regain marketing control.

After three coast-to-coast flights, you might think you have enough frequent flier miles for a free ticket.

Get back on the plane.

New rules from some of the biggest airlines mean you’ll have to fly more miles as a paying passenger to earn the minimum frequent flier award.

Led by United, big airlines are raising the number of miles to qualify for a free domestic ticket, from 20,000 to 25,000. They say it’s one way of gaining more control over a marketing device that lets so many customers fly free.

The latest notch in the seemingly never-ending belt-tightening at the nation’s airlines is risky for them. They don’t want to alienate their best customers--the business fliers who pay the priciest fares, fly the most frequently and have accrued enormous mileage entitling them to fat awards.

The most-frequent fliers may not necessarily see the new rules as a sacrifice, since they have so many miles accumulated anyway. But many less-frequent passengers see the awards as an entitlement. They’re angry.

“I resent it. I work hard to earn those miles,” said George Brakeley III, a fund-raising consultant for nonprofit corporations. “I regard awards from frequent flier programs as something due me and they make it tougher and tougher and tougher to get the awards.”

For some of the most-frequent fliers, the increase is actually welcome news. The higher requirement means there will be fewer people competing for free seats on the choicest routes.

“It’s gotten to be more of a seller’s market,” said Randy Mohr, who worked on developing the Diners Club frequent flier program and is now advertising manager for the National Safety Council. “There are more people with miles looking for the trips and there are more people looking for seats.”

The vast majority of passengers, maybe 90%, are not-so-frequent fliers and have been just barely qualifying for a free ticket at the 20,000-mile level, estimates Randy Petersen, editor and publisher of InsideFlyer, a monthly magazine that provides details on frequent flier programs.

Those are the travelers, he said, who need to concentrate more on using credit cards, hotels, rental car chains and long-distance companies that are part of their frequent flier programs.

Starting early next year, United, American, USAir and others intend to increase the minimum mileage requirement for a free ticket.

Continental and America West are studying whether to change their programs and Northwest Airlines is likely to raise its requirements. TWA, still recovering from years of passenger ill-will encountered during its bankruptcy reorganization, has decided to leave the minimum reward level at 20,000 miles for now.

Delta Air Lines is one of the few airlines that doesn’t impose a deadline on when miles can be used, but that generosity might not last.

Members of Delta’s frequent flier program say the airline has told them it is reviewing the program with an eye toward falling in line with the rest of the industry. The airline will only say the program is under review.

Part of the reason for the airline industry’s increased stinginess in frequent flier awards is that you don’t have to fly to collect the miles. You can drive a rental car. You can stay in a hotel. You can charge groceries on your credit card.

Dallas-based traveling salesman Bobby Finken scored a substantial number of frequent flier miles during a two-month period late last year, but only 13% resulted from actually flying.

“The whole system has gotten so out of kilter, they pile the miles on,” said Finken, who has more than 1 million untapped miles. “I look at it like it’s money. . . . It’s there for the taking.”

But spending those miles on free trips has gotten more difficult. In recent years, airlines have limited the number of seats allotted for frequent flier freebie tickets on each flight, blacked out some of the most popular travel dates and put a three-year limit on how long the miles may remain unused.

More recently, some airlines have cut back on one of the more popular frequent flier perks--the free first-class upgrade--by reducing the number of first-class seats on their jets or eliminating first class altogether.

Airlines say the cost of the free seats has grown excessive. On a flight with 100 passengers, six on average will be flying free on frequent flier miles. That’s a 33% increase since 1990.

Still, frequent flier programs have been a powerful selling tool for the airlines, tapping an enormous market of people who might otherwise avoid flying. Moreover, these programs may not be as much of a financial drain as the airlines claim.

Hotels, cellular telephone companies and the like that award frequent flier miles reimburse airlines for any free trips earned, whether the passenger cashes them or not. Not only can the airline realize a windfall from those unused mileage points, but it gets a regular check from the other companies.

How the Flier Programs Took Flight

Chronology of the airline industry’s frequent flier programs:

1981--American Airlines introduces AAdvantage frequent flier program, first industry effort to systematically track passengers and give regulars perks for repeat business.

1986--Credit card companies strike deals with airlines to offer mileage points to consumers based on the amount of money charged each month.

1987--Airlines crack down on mileage point brokers who buy miles from frequent fliers and resell them. Some airlines sued brokers and required frequent fliers to collect their free tickets in person. United limited transfers of mileage awards to the frequent flier’s family.

January, 1988--Led by Delta Air Lines, major carriers undertake a wildly popular extra-mileage promotion. Airlines offer triple miles for fliers who take a trip before a deadline. Later in the year, airlines also start limiting the number of seats on each flight available to travelers flying free on mileage awards and black out some of the more popular holiday travel dates.

April, 1988--Airlines restrict number of ways frequent flier miles can be used, but allow miles to be transferred as gifts to anyone, not just family members.

November, 1993--United Airlines discloses plans to raise the minimum number of miles to receive a free domestic ticket from 20,000 to 25,000 miles. Other requirements are also tightened. Other airlines go along with the changes, scheduled to take effect early in 1995.