For some reason, it is very, very hard to find ramps in Los Angeles. What can I use a substitute that has the same flavor profile?

I also read you can combine regular leeks wlth some garlic and scallions (green onions).

There is a type of allium called "garlic chives" in English, but often called 'gau choy' in Chinese markets - 'nira' is the Japanese word. Also very popular in Korean cuisine. They also have a certain skunky pungency to them which is just a tad sharper than that of ramps, so if you were to substitute them, I'd go a little easy on the garlic chives unless you just like the flavor. I'm almost positive you can find them in the produce section of any Asian grocery with fresh produce.

I agree with petitbleu's recommendations. Another substitution that would be even easier to come across would be leeks mixed with garlic.
Ramps are harvested wild and only grow in eastern North America, which is why they're rarely seen in markets elsewhere.

Sorry. My prior response was meant for another question.

Green garlic is the closest thing I've found. To me, ramps taste like garlic, but especially skunky (I mean that in a good way!), and green garlic is just that--garlicky but with even more zing. Garlic scapes are another good substitute. Most recipes that call for ramps are still great recipes when you use a substitute.

http://www.epicurious.com/recipes/food/views/Buffalo-Salmon-242298