( CNN ) -- Airlines were scrambling to accommodate passengers affected by the cancellation of hundreds of flights after a monster weekend winter storm that blanketed a swath of the East Coast . In addition to refunds , a spokesman for Delta Air Lines said the company is providing a weather waiver that allows passengers to reschedule without a penalty if they were scheduled to travel before Christmas . `` We 're doing everything we can to accommodate customers to get them to their holiday destinations , '' said Paul Skrbec , Delta spokesman . American Airlines said it would add extra flights , use bigger planes where possible and reflow passengers to other flights . Passengers who were affected can switch flights with no change fees through Thursday , said Charley Wilson , airline spokesman . Continental Airlines said though flights are extremely full because of the holidays , it is working on a `` case-by-case basis '' to ensure passengers get home for the holidays . Passengers can also either get a refund or change their flights for free at Continental 's Web site or through the 800 number , said spokeswoman Mary Clark . Record snow blanketed some areas Sunday , including 23 inches in Bethesda , Maryland , and 24 inches in Medford , New Jersey . Philadelphia , Pennsylvania , received 23.2 inches -- its second-highest snowfall ever in a single event . East Coast travelers faced treacherous roads , and flight delays and cancellations Sunday . Dulles and Reagan National airports in Washington saw snowfall of 18 inches and 16.4 inches respectively -- the highest one-day totals ever for December . At New York 's LaGuardia Airport , some passengers were resigned to their fate . `` You sort of crumble once , get it over with and then put on a smile and just understand that 's the weather and there 's nothing you can do about it , really , '' said Mira Chopra , who was stranded at the airport . Two people were killed in weather-related crashes , the Virginia State Police said Sunday , and `` there are two additional deaths that are likely related to the winter storm . '' The storm , known as a nor'easter , blanketed the mid-Atlantic region and the heavily populated Interstate 95 corridor . Meanwhile , western North Carolina residents were digging out from the powerful storm . About 28,000 households had no power into Sunday night , said Drew Elliot , spokesman for Progress Energy . In Washington , Mayor Adrian M. Fenty said the storm is `` perhaps the biggest we 've seen in several years . '' `` We are going to throw everything we have at it to keep the District open for business on this busy pre-holiday weekend , '' Fenty said when he announced the snow emergency . But , he also urged residents to stay put in their homes . `` We urge everyone if you do n't have to go anywhere , wait . We should have a lot of streets ready to go by rush hour Monday . And , hopefully , all of it done between Monday and Wednesday . '' Nine people were taken to a hospital after a bus and a city snow plow collided , a D.C. fire official said . The injuries were not considered serious .
Monster weekend winter storm blankets a swath of the East Coast . Delta offers weather waiver on rescheduling fees ; American to add flights . Record snow blanketed some areas Sunday ; Philadelphia gets 23.2 inches . At least four deaths have been linked to the winter storm .