Its better to get City pass, if you are planning to visit other places as well along with space Needle.
You can order them online and at the front desk.
Local guide
How much $ for just the space needle
You can buy them at the front desk or you can buy them at the kiosk next to the Space Needle
+1 for City Pass on line. Get a deal on price plus other stops like the museums and science center around the Space Needle, plus zoo and aquarium.
Get the City Pass. You can visit more than just the Space Needle for a steal of a deal like including the Chihuly Glass exhibit just below the Space Needle!
You can purchase tickets at the front desk no problem. They also take credit cards
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