Subscribe users to different Mailchimp list based on form selection?

I would like to automatically sign visitors up to specific Mailchimp lists based on what trip they pay for through my form.

For example, if they select Trip A, they are signed up for Mailchimp list A. If they select Trip B, they are signed up to Mailchimp list B...

If this isn't an available feature yet, do you have any clever workarounds I can try?

Appreciate everything you guys do! Jotform rocks.

I do not think that could be possible, since you can not manipulate an integration using conditions.

I possible way would be show/hide an iFrame, in your form, in the iFrame should be the form where you want to subscribe your submitter.

You would need these guides:

1. Add the iFrame to your form: http://widgets.jotform.com/widget/iframe_embed.

2. The condition to show/hide the section based on an input selection: http://www.jotform.com/help/316-How-to-show-or-hide-a-field-in-the-form-based-on-the-other-field-input-or-selection. 

You will need to create different forms and add into a main form using the iFrame embed widget, then you will be able to add your submitter to a different Mailchimp list.

Hope this helps.