Scott Laird | TravelPulse (TNS) If you travel by air enough, delays are inevitable. However, how airlines handle delays can vary depending on the circumstances of the delay, including the reason, city and even the passenger’s frequent flier status. In Europe, the question of passenger compensation for delays and cancellations is straightforward: the European Union has consumer protection laws that require airlines to compensate passengers in cash for delays within the airline’s control.

Unlike in the European Union, the U.S. has no standard for what airlines must provide passengers in case of a delay or cancellation.

In the United States, each carrier decides how to accommodate passengers affected by what the airlines call “irregular operations,” and the Department of Transportation (DOT) oversees its efforts. That virtually never includes cash compensation, although some airlines, like Alaska, will issue travel credit for delays over three hours for circumstances within their control. The DOT has said airlines should cover passenger expenses for lengthy delays within the airlines’ control, but each airline has its own criteria for handling such requests.

The first consideration for airlines deciding whether to offer a voucher for meals or hotels will be what caused the delay. Most airlines do not provide vouchers or expense reimbursements for delays they term uncontrollable, such as those related to weather, air traffic control, or catastrophic events like earthqua.