Looking on the internet deeply has found these results:

welcome on the board of is the most popular phrase on the web.

welcome on board 12,900,000 results on the web	welcome on the board of 14,950,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
Welcome on board, Mr. Thevenet. Ladies and gentlemen and variations thereupon, welcome on board the Crusader 50. Welcome on board, Mr. Dallas. This is your captain Welcome on board Instant Hell Airline Ladies and gentlemen and variations thereupon, welcome on board the Crusader 50, if you would fasten your seatbelts, we'll be leaving any moment. Cmdr Data, welcome on board. Dr Jackson, welcome on board the Prometheus. Ladies and gentleman, welcome on board this Great British Air flight 287 to Barcelona.	I want her to feel at ease and welcome on board the Enterprise. Ladies and gentleman, welcome on board this Great British Air flight 287 to Barcelona. Dr Jackson, welcome on board the Prometheus. Welcome on board, Mr. Thevenet. Cmdr Data, welcome on board. Ladies and gentlemen and variations thereupon, welcome on board the Crusader 50, if you would fasten your seatbelts, we'll be leaving any moment. Welcome on board, Mr. Dallas. Ladies and gentlemen and variations thereupon, welcome on board the Crusader 50.

welcome on board

12,900,000 results on the web

welcome on the board of

14,950,000 results on the web

More popular!

Welcome on board, Mr. Thevenet.
Ladies and gentlemen and variations thereupon, welcome on board the Crusader 50.
Welcome on board, Mr. Dallas.
This is your captain Welcome on board Instant Hell Airline
Ladies and gentlemen and variations thereupon, welcome on board the Crusader 50, if you would fasten your seatbelts, we'll be leaving any moment.
Cmdr Data, welcome on board.
Dr Jackson, welcome on board the Prometheus.
Ladies and gentleman, welcome on board this Great British Air flight 287 to Barcelona.

I want her to feel at ease and welcome on board the Enterprise.
Ladies and gentleman, welcome on board this Great British Air flight 287 to Barcelona.
Dr Jackson, welcome on board the Prometheus.
Welcome on board, Mr. Thevenet.
Cmdr Data, welcome on board.
Ladies and gentlemen and variations thereupon, welcome on board the Crusader 50, if you would fasten your seatbelts, we'll be leaving any moment.
Welcome on board, Mr. Dallas.
Ladies and gentlemen and variations thereupon, welcome on board the Crusader 50.