this be a fantastic idea , and it work ! we use it recently for we trip to Arizona and it be great . between my husband and I we have 2 suitcase , 1 golf bag , a umbrella stroller and the car seat . this little invention make it easy for we to attach the car seat onto one of the suitcase , leave we with just the other bag , the stroller and the golf bag to drag around . I would recommend practice at home before head for the airport as this can be quite tricky to attach to the bag . my husband be normally very calm but I have see he get angry because he could not get it to work . the trick for we be to pull the handle on the car seat to put it in the recline position , that way it fit better . you will have to unstrap the seat to go through security so just make sure you know how to do it properly and it will only take a minute to put back . people in the airport be comment on how clever it be and we daughter be happy ride in it . we use the suitcase\/seat combo as we stroller in the airport which be very handy . we could even wheel she in the plane and only have to unstrap it once we reach we seat . I would imagine that in some plane the aisle might be too narrow to allow you to do that . overall a great product and most importantly if feel safe to use .