1. Try to find it: make sure it is really gone before taking the next steps.
    
2. If you are leaving that day, call the airline or go to the airport to inform them that you will miss your flight. If you don’t inform them you will not make your flight, you will be a “NO SHOW”. That means your reservation is cancelled and you may have to pay a very high last-minute price to re-book! The $1000 flight (round-trip) from Madrid I booked was $2700 (one-way) the day before!
    
3. If needed, determine if there is a flight you might be able to do that same day. If you try to make a flight the same day, everything you do from here forward will have a time constraint adding stress. I would strongly recommend to consider pushing back your flight to the following day so you have 24 hours to do all the next steps. 
    
4. Visit the embassy. The US embassy security was extensive. I could not bring in my phone or bags. The people were very nice. 
    
5. Personal Information: I had my driver’s license, credit card, and my passport number. It made it pretty easy, so try to have this information separate from your documents just in case this happens.
    
6. Payment: You will need to pay them in cash or credit card. Mine was $145. 
    
7. The passport photo machine was not wheelchair accessible. Transferring onto a small stool without handrails was challenging, so perhaps have someone with you or ask for assistance if needed.
    
8. Time to expect: The whole ordeal from the time I arrived to the time I departed took 2 hours.
    
9. Re-book airfare: I had to go to the airport to get another flight booked. During my first visit, they didn’t mark me as having given notification so I was labeled a no-show. When I went back to the airport, the staff recognized me as the guy in a wheelchair that was there at 5 am.
    
10. Book a hotel: If required to stay another day and you’ve booked with Sage Traveling, you will have access to our emergency line and we will take care of this for you–so don’t forget to keep this number handy.
     
11. Modify your future travel plans: If you have more stops on your trip, your hotel, tour, transfer, and train reservations may need to be modified due to your delay. We can also handle this for you.
     
12. Emergency Passport. When you finally get to the airport with your emergency temporary passport, be prepared for a lot of questions. Tell them when and where it was lost/stolen. 

Web: http://www.sagetraveling.com