How we might travel up to Belize from Spain? I do not know any agency of trips that organizes tours to Belize.
what is place that you advise to spend my honeymoon?
Sorry for my bad english !!

Your English is just fine. I'd like to help you more with your question but you are probably right that there are no direct flights from Spain to Belize. Do you have direct flights to Miami? If so, you could then fly from Miami to Belize.

We flew from London via Miami - the only problem is with the timing of the flights you have to stay overnight on the way out in Miami (all Euro flights arrive in the afternoon and the flight from Miami to Belize is in the morning). We booked everything independantly via the web. I think Journey Latin America arrange flight throughout Europe to Belize so they may be worth checking for flights from Spain.

Journey Latin Am. does arrange flights and tours. When my daughter come from Caracas she comes thru Miami. She has also come from Bogata thru San Salvador. If you would like her email let me know ( She speaks fluent Spanish) as she travels frequently,and I am sure would be glad to help you.