I've flown quite a bit with my daughter, starting when she was five months. She's almost 2 now, and still a great traveler. Plenty of snacks and toys are the key to a happy baby. "Special" snacks that you normally wouldn't give at home can be a nice treat for travel.
If the airport doesn't have a play area, we find a relatively deserted corner near our gate and play "catch the baby" to try and wear her out. It pretty much guarantees she'll sleep through a good chunk of the flight.
Our only other "trick" is to fly Southwest. With their great baggage policy, good fares and friendly staff, they really help make travel fun. I've flown other airlines with my daughter, and always regretted it. I was amazed at how many flight attendants completely ignored her - no snack (if one was offered), no drink, nothing. I guess I'm spoiled by SW, where the attendants have always treated her like the little person she is, and not an annoyance.
SW - because of your staff, you rock.
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