The Campground which is cheap as well as offer easy camping options in Seattle is The Mount Baker-Snoqualmie National Forest. This campground facility is around one hour distance from east of Seattle. You can go to this forest and you may find some of the old forest service logging roads. You can find various different places in this forest where you can almost camp for free.

The limitations of camping at this place are that you may not find various amenities such as water, picnic table, campfire ring or restroom facilities. It may be difficult for you to locate anyone even up to miles in this forest and therefore if some help may be needed, you may not be able to locate anyone. It can be scary especially in case you have a medical emergency or some sort of technical problems with your vehicle. Since, cell phone services are also not adequately available, so you may not be able to contact anyone.

In that case, you may opt from some of the other cheaper and more developed campground options that are within an hour or two from Seattle. The cost of camping is close to USD 14 to USD 25 per night. The cost would however depend upon the different facilities that are provided by a particular campground.