Would like to use my 50% off code for a MR from SFO the weekend of Jan 18/19. I tried doing the multi-city search for some SFO to JFK (and rerouting back through SEA or SAN) but the site keeps erroring out on me. Any tips for searching? Would like to avoid spending the night at the airport if possible but it seems like there are no west to east red-eyes that weekend.