该国的机场已经陷入困境假日旅游乱象由于危险的天气条件、员工问题和系统崩溃，几个主要航空公司已经取消或严重延误了全国数千个航班。
许多旅客不知道在航班极度延误和取消时他们的权利是什么。
星期二下午，Flight Aware的数据显示在经历了艰难的周一飞行后，美国国内、进出美国的近3000架航班被取消，超过3500架航班被推迟。
仅西南航空公司周一就取消了至少70%的航班，周二和周三取消了62%。
你有什么权利?
根据联邦法律，如果航空公司取消航班，无论原因如何，消费者都有权获得退款，并且消费者选择不旅行。
根据运输部(DOT)的说法，如果航空公司“做出了重大的时间表改变和/或严重延误了航班，并且消费者选择不旅行”，消费者也有权退款。
挂机点没有定义什么是“重大延迟”根据该机构的说法，你是否有权退款取决于多种因素，包括延误时间、飞行时间和“你的特殊情况”
斯科特廉价航班的创始人斯科特·凯斯今年早些时候告诉ABC新闻，在大多数情况下，航空公司会首先为你提供一张未来旅行的旅行券。
“你不必点击那里并接受旅行券，因为根据联邦法律，你有权获得全额现金退款，”凯斯说。"你可能不得不打电话给航空公司，要求得到现金退款，而不是凭单。"
凯斯还说，要联系预订旅行的那一方，不管是航空公司还是第三方，比如旅行社。
“你必须通过与你一起预订机票的人。因此，如果你是通过在线旅行社向第三方预订的，那你就得和他们聊天，”凯斯说。“实际上，如果价格相同，最佳做法是直接向航空公司预订。因为当事情出错时，当事情延期或取消时，事情就简单多了。”
然而，在某些情况下，消费者无权获得退款。根据DOT的说法，购买了不可退票的机票，但由于个人原因(如生病或误机)无法旅行的旅客，无权退票。
如果你的航班超卖，你被拒绝登机怎么办?
有时，当航班超售时，航空公司可能会取消乘客的行程。根据交通部的说法，在这种情况下，航空公司必须首先要求乘客自愿放弃座位以换取赔偿。
航空公司可以提供给你的金额或代金券没有限制，乘客可以自由协商。
如果在这些情况下没有足够的志愿者，航空公司可以选择乘客，不由自主地将他们赶下飞机。如果你是少数几个不幸的人之一，航空公司需要在某些情况下补偿你，包括如果乘客已经确认预订，乘客按时办理登机手续，准时到达登机口，以及如果航空公司不能在航班原定到达的一小时内将你送到目的地。
如果你决定改变你的航班怎么办?
消费者应该知道，大多数美国航空公司在疫情期间都取消了改签费，这意味着如果您决定改签航班，您只需支付票价差额。
What you can do if your flight is canceled
The nation's airports have been mired by holiday travel chaos, as several major airlines have cancelled or severely delayed thousands of flights nationwide due to dangerous weather conditions, staffing issues and system meltdowns.
Many travelers are left wondering what their rights are during extreme flight delays and cancellations.
On Tuesday afternoon, data from Flight Aware showed that nearly 3,000 flights had been canceled within, into or out of the U.S., while more than 3,500 had been delayed, after a rough Monday for flying.
Southwest Airlines alone canceled at least 70% of its flights Monday and 62% on Tuesday and Wednesday.
What are your rights?
Under federal law, consumers are entitled to a refund if the airline cancels a flight, regardless of the reason, and the consumer chooses not to travel.
Consumers are also entitled to a refund if an airline "made a significant schedule change and/or significantly delays a flight and the consumer chooses not to travel," according to the Department of Transportation (DOT).
The hang-up -- DOT has not defined what constitutes a "significant delay." According to the agency, whether you are entitled to a refund depends on multiple factors, including the length of the delay, the length of the flight and "your particular circumstances."
In most cases, airlines will first offer you a travel voucher for future travel, Scott Keyes, founder of Scott's Cheap Flights, told ABC News earlier this year.
"You do not have to click there and accept that travel voucher, because under federal law you're entitled to a full cash refund," Keyes said. "You may have to call the airline and demand to get that cash refund rather than the voucher."
Keyes also said to contact the party you booked your travel with, whether that be the airline itself or a third-party like a travel agency.
"You have to go through whoever you booked your flight with. And so, if you booked it with a third party with an online travel agency, that's who you're going to have to chat with," Keyes said. "The best practice is actually to book directly with the airline if the price is the same. Because when things go wrong, when they're delays or cancelations, it's far simpler."
There are situations, however, where consumers are not entitled to a refund. According to DOT, travelers who purchase nonrefundable tickets, but are unable to travel for a personal reason, such as being sick or late to the airport, are not entitled to a refund.
What if your flight is oversold and you're denied boarding?
On occasion, airlines may bump passengers from a trip when the flight is oversold. In cases such as this, airlines must first ask passengers to give up their seats voluntarily in exchange for compensation, according to DOT.
There is no limit on the amount of money or vouchers the airline can offer you, and passengers are free to negotiate.
If there aren't enough volunteers in these situations, airlines can select passengers and involuntarily bump them off the flight. If you're one of the unlucky few, the airline is required to compensate you in certain situations -- including if the passenger had a confirmed reservation, the passenger checked into their flight on time, arrived to the gate on time, and if the airline cannot get you to your destination within one hour of your flight's original arrival.
What if you decide to change your flight?
Consumers should know most U.S. carriers did away with change fees during the pandemic -- meaning if you decide to change your flight, you'll only have to pay the difference in fare.
ABC News' Sam Sweeney and Kiara Alfonseca contributed to this report.
