Today's storm is especially difficult for people planning to fly out of Logan. Not because it's so hard getting to the airport ... but, because you may not be sure your flight will leave on time, or at all. There haven't been any wide-spread changes or alternations to the day's departure screen, but there have been cancellations here and there .. and the question of refunds always pops up.
I am happy to tell you, some of the airlines, like Delta, have loosened their general policies, so it is easier to get a full refund if you decide you don't want to make a trip .. but, the terms and conditions are important; you can't simply ask for your money back.. it needs to be within a specified period of time. Check with the individual airline.
Now, having said that, it is different when there are weather related problems. Laws are sketchy on this; the FAA gives the airlines a lot of slack when setting policies .. they mostly have the freedom to come up with whatever they like, with one caveat: they must get you to the destination for which you paid. If they can't, they have to give you a refund. However, if a flight is simply delayed, it's harder. Most airlines will accept a weather-related itinerary change free of charge, but they won't automatically issue a refund. Of course, it never hurts to ask. And as I said earlier, check with the individual airline to see what its policy is .. because they vary between carriers.