Using KLM credit on Delta/NW/CO?
 

all,

this is one of my first posts here, so be gentle.

by some lousy circumstances, i wound up having to cancel a roundtrip flight that was booked from FRA to TLS on KLM. after cancellation fees, etc, my remaining ticket value was about $250. my understanding is that this can only be used for tickets for the originally ticketed passenger, and only on KLM.

since it'll be pretty hard to get a ticket for 250 bucks or so on KLM, i'd like to use the credit on a KLM partner (Delta, NW, etc) in the US to get some utility out of it. if the flight is KLM code-shared, i believe it shouldn't be a problem.

my questions are:
1) how do i find out what domestic routes are KLM codeshares?
2) is there some better way to use this credit that i'm not thinking of?

thanks!

Other posters with more experience are sure to chime in shortly but I believe these vouchers are valid on KL, AF and NW flights.