Passenger throughput is now projected at 16.9 million in the current October-September period, up by 523 per cent from the previous fiscal year, with take-offs and landings soaring 311 per cent to 153,000.
General manager Paranee Vatanotai said the airport reached the halfway point of its goal in just the first five months to Feb 28, recording 6.13 million passengers and 54,694 take-offs and landings.
International passengers flying through Don Mueang in the five-month period totalled 1.88 million, while domestic passengers numbered 4.25 million.
The period saw international aircraft movements reaching 15,283 and domestic movements hitting 39,411.
The surge comes as the airport rises from the devastation of Thailand's worst flooding in 69 years in late 2011.
Mrs Paranee largely credited the increase to the low-cost carrier group Thai AirAsia moving its base to Don Mueang from Suvarnabhumi airport last Oct 1.
The deluge shut down Don Mueang in October 2011, but the airport reopened last March with limited service.
The increase in traffic also followed an overall state policy change, made early last year, that officially turned Don Mueang into Bangkok's second air hub, not just serving point-to-point domestic flights by budget carriers.
Much of the traffic build-up at Don Mueang has been generated by AirAsia and Nok Air, with Orient Thai Airlines also contributing.
Read the original story on the Bangkok Post here.