Eclipsepearl
What kind of flight will you be on? The "ER" or "extended range" should be one of the international aircraft with changing tables. There is a domestic 767 which does not have them. Be sure to bring a plastic mat for changing your baby. If you're sure there is no changer, look for the handicapped lav. It's bigger and you'll have more space to lay down the map. Yukky? Kind of but it wont hurt your baby. Thow paper towels down around and/or under the mat if you want (as well as for your knees). If he's a crawler, there is another option. If your child can stand, not necessarily independently but with support, practice changing him in this position. I was given this tip by a cousin with twins and it was so helpful not just for travel but anytime in public where there isn't a changer nearby. Practice this at home, perhaps with a towel, before leaving though! It works great because placing their hands in the "frisk" position keeps them in one place. It's so hard to make an active baby lie down in a strange place! These baby changers are small, only holding babies until about 6 months max. Some might suggest you change the baby in your seat. It's not illegal but it could make you rather unpopular with your fellow passengers, even for an "uncomplicated" diaper. If you're very thick-skinned, you can just tell them they can install a baby changer in one of the lavs to avoid this situation! Lastly, I recommend that you change the baby right before boarding. Hopefully, this will put off this task for as long as possible! If it's a short flight, you might actually get you to landing. Some parents use "nighttime" or one size bigger (careful of leg holes though!) when flying to prolong the use of each diaper. It's also a good idea to bring lots of diaper cream and apply liberally. You will use more than you do on the ground so bring about 1/3 more than he would use in the same time frame, or as many as you can pack. Wrap with plastic bags and rubber bands to make space in your carry-on. I saw too many parents run out of diapers on flights. Not pleasant! I also ended up giving some of my extras when I flew with my own babies. Just be really, really sure there isn't a baby changer. Ask the Flight Attendants when you board. Even if you're on domestic, there's a chance there's been an aircraft change, since a lot of their 767's do have them. Feel free to write and complain. I do think a simply wooden plank is not too much to ask from parents flying with babies! For more information, about nine years ago I wrote an article on this subject of flying with children. It's based on both my personal and professional experience. Twice yearly transatlantic flights and seven straight years of diapers... It's totally non-commercial and other parents from around the world have contributed; Good luck!

Neil
I believe the information you have been given is wrong and there are changing tables

ronny k
Infants do NOT belong on aircraft. The radiation at 38,000 feet is EXTREMELY dangerous for children under 3 yrs of age and can lead to long-term, permanent damage to their brain and endocrine system.. You should take a bus or ship instead of flying.