K.H.
How long is the flight? We flew with my oldest daughter right before she turned 2 and she was a lap child. I think our flights were 3 hours than 1 hour and she did fine. As it turned out, the flight we were on wasn't booked so she ended up having extra space; however, I think we would have been fine with her just moving from my husband's lap to mine.
As a side note, we got delayed (for hours and hours) coming home and I was so worried about how she would be. In the end I was CRANKY and she was a perfect angel. Sometimes I think we worry about the kids too much. They tend to think the experience is fun so go with it!
We also flew with my youngest when she was 1 1/2 and she did fine on my lap too!
Wikki sticks are a fun thing to bring on the plane. They are very small so fit well in a carry on and are easy to pick up. My daughters both liked making things with them.