International transfer in Bangkok, flights on separate tickets: how to transfer luggage?

I'm traveling from China to Bangkok and taking another international flight on the same day four hours later from Bangkok to Delhi, but the two flights' tickets are booked separately.
How should I collect my luggage from Bangkok airport and drop it for Bangkok Delhi flight? Do I have to clear immigration first at Bangkok then collect my luggage from the belt and then check in for the Bangkok-Delhi flight, or there is an easier way?
Best Answer
Thai Airways and Air China are both in the Star Alliance. As such (and sometimes in other cases as well), you may be able to check your bag through at bag drop in China by showing your connecting ticket, although this is far from being a given (contact Air China if you want a definite answer). If this is available, you should be able to obtain your connecting boarding pass at the transfer desk in Bangkok Airport.
If this is not available, you will need to pick up your bag in Bangkok, clear Thai customs and immigration, check in again, and make your way through security to airside again. Four hours should be enough for this, but obviously you would want to avoid the hassle...
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Do I have to collect my baggage between connecting flights International?
If you're connecting in the U.S., they require everyone from international flights to re-check their baggage upon the first landing point.Does your luggage get transferred on a connecting flight?
When you purchase a connecting flight, checked baggage is usually forwarded to your final destination, and will change planes when you do. The agent at check-in will usually ask if you want your luggage checked through to your last stop.Do I have to recheck my luggage on a connecting flight?
If your flights were booked under one ticket, your bags will be checked through to your final destination. If your flights were booked under separate tickets, you will need to collect your bags and recheck them before your connecting flight.Bangkok International Airport | Transit, Transfer and Baggage claim guide 🇹🇭
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