When I went to pick up Sophia in Chicago i booked the flight ahead of time and reserved her spot, i traveled Jetblue and they allow 4 dogs per plane. Sophia was the only dog tho i believe. Anyway the only time i had to take her out was to go thru security. They didn't even ask for her ticket or anything. After that to get on the plane, no one asked for her ticket, or if i even had a dog in there. No one even knew. I did have her ticket with me but it was completely useless. They also didn't even weigh her and the carrier, even though the carrier i had was a very light soft sided carrier from petco. They didn't even measure it or anything. I think traveling with 2 dogs would be fine but just let the airlines know. I plan to travel with both girls in the future as i like to travel a lot and visit family around the world. My advise tho is to def. have something reccomended by a vet to calm them down, like calm moments tablets or something! Sophia was so nervous and although she wasn't making any noise or anything she was shaking a lot! The worst was during take off and landing that i had to take her out to comfort her and no one said anything to me. It was hell to put her back in the carrier tho, she was scratching at me, poor thing. I even tried to give her treats and she didn't want anything, so next time i will take something for her. Also if the person next to you is not a dog person that sucks. The lady next to me didn't say anything but she kept looking at her like she had never seen a dog before!