Another option is to keep your Chi in a shouldered canine sling; however you will only want to consider that if your dog has proven that he tolerates being carried that way and that your activities will allow for this.
If the plane is going to bring you to an area with hot weather, a Chihuahua will not be able to handle lots of time in the beating sun. In addition, if you will be going to amusement parks and other places where a dog logically will not be happy, you should consider leaving him home in loving hands.
If You Decide To Take Your Chihuahua On a Plane
When you bring your dog on an airplane there are some elements that you must be aware of. If you do not plan this out, your Chihuahua's crate (with him or her in it) may be treated equal to a bag of luggage placed under the plane in the cargo hold. This is a dangerous place for pets; in some cargo holds temperature is not regulated and additionally, you will not have access to your dog throughout the entire flight.
Here are some tips to make flying on an airplane with your Chihuahua safe and happy:
Call the airline in advance to make sure that they allow small pets in carriers
to be brought along into the passenger section of the plane. Ask for specific measurements for the maximum size of the crate. The sizing is for how big the area under the seat in front of you is, as that is where your Chi will be placed.
Planes are usually very strict in this area; if they tell you that they will not accept a crate higher than 15 inches and your Chihuahua's crate is 16 inches, the airline will have a right to deny your dog onto the plane.
In the hypothetical case of this unexpectedly happening, we would strongly suggest refusing to fly finding alternative means of traveling.