One thing you have to be careful of is with connecting flights of differing airlines. Sometimes it will propose an itinerary that just isn't realistically possi

One thing you have to be careful of is with connecting flights of differing airlines. Sometimes it will propose an itinerary that just isn't realistically possible to make because you won't be able to get to the other airline in time. I've only encountered this once or twice. Otherwise, I use it all the time, successfully booking many flights through it.