RouteHappy
RouteHappy (iOS) takes a number of factors such as seat size, baggage fees, and most importantly, feedback from other flyers, to give each potential flight a Happiness Score.
TripIt
You’ve probably heard of TripIt (iOS, Android, Windows Phone, BlackBerry) – it’s pretty popular. And for good reason. You email TripIt your reservation emails. The service takes all the information in the email and makes an easy-to-read itinerary for you.
GateGuru
With GateGuru (iOS, Android, Windows Phone), you’ll see all the details of your flight – departure and arrival gate, departure time, flight time… but what I like about this one is that it also gives you all the info you need about your airports, including where to get food and rental car information.
FlightBoard
FlightBoard (iOS, Android) resembles the arrival and departure boards you use at the airport, and you can click through to see more info about the airport or share the information.