If you are looking for a half-hour church service, either LCMS or WELS, to listen to, then Lutheran Radio Church Service is your best choice. You might be on vacation, or maybe you even travel for a living. That does not mean you need to miss church. Even if you or a loved one is living in an assisted living center, lrcsonline.org is still available.
While Lutheran Radio Church Service broadcasts from Milwaukee, WI, it's now available anywhere and at any time. Whether you are pulled in to a rest stop outside of Des Moines for the night or staying at a hotel in the middle of Paris, you do not need to miss a Lutheran church service. Even if you are stationed overseas in the military. Or on a college campus.
You can even search the sermons for exactly the right message, since Lutheran Radio Church Service has weekly archives since August of 2013.