There are different flight options that are available between Mexico and Seattle. Some of the airline companies that provide for round trip flight options between these two destinations are Continental Airlines, Delta Airlines, US Airways, Northwest Airlines and United Airlines.

In all, there are 7 airlines that are operating flights between Mexico and Seattle. Most of the one stop flights between these two destinations have Los Angeles as the most popular connection between these two cities.

http://www.farecompare.com/flights/Seattle-SEA/Mexico_City-MEX/market.html

The maximum number of one stop flights between these two destinations are operated by American Airlines.

You can choose to camp in a tent or you may also want to stay in an RV. Campground is a cheap as well as affordable way to have a fun-filled vacation in Seattle. The various entertainment options and activities are offered by different campgrounds in Seattle.

In order to look for campgrounds that are near your vacation place, you can search for the most suitable campground options by searching the various online directories and you can search for the various options by even looking at a local phone book:

http://www.magicyellow.com/category/Campgrounds/Seattle_wa.html

However, what is most important is to make your search according to the camping experience that you are planning to achieve in a given campground.