My biggest fear is not being able to fit in the seats. The last time I flew it was circa 1997 and I weighed 170lbs. Now I weight 350lbs. Can people who have gone to Mexico tell me how they flew, such as if they went economy or first class, did they have to purchase an extra seat, etc.

There's a facebook group call Flying while Fat that can help you. It varies depending on the airline. They have good tips on figuring it all out.

I was very heavy before weight loss surgery (351) and flew pretty often. To cut down on my anxiety I purchased my own seatbelt extenders on ebay. I have one for Southwest and American airlines. I usually chose a window seat so I could lean towards the window. I never had a problem and I always flew coach. Sometimes you get lucky and you wont have a full flight so you'll have an empty seat in your row.

I haven't been to Mexico, but I've done a fair amount of work travel.

Hopefully now that I'm losing weight it won't be something I'll need to do anymore, but I found it helpful to ask to board early. I've never had an issue at the gate just asking if I can board early due to a medical condition (obesity is a medical condition). Then when they call people with little kids and disabilities, you can get on the plane and it'll give you a minute to get situated and ask for a seatbelt extender if you need it before the plane gets packed.

Good luck to you!

You will definitely need a seatbelt extender and honestly, you'll probably get some dirty looks. . If you can afford it, purchasing two seats will really help to curb your anxiety because then you don't have to worry about fitting and/or who is sitting next to you. Good luck!

It's been my experience that the airlines are much better at dealing with peopled of size. pay for pre boarding, it's worth it for piece of mind. Also let the stewardess know you will need an extender. They will discreetly get one to you. Definitely check out that facebook group. They had some of the best advice I'eve ever encountered.