Up against 18-year-old Thai Pornpawee Chochuwong, the top-seeded London Olympics bronze-medallist triumphed 22-20 22-20 in a 46-minute clash.
This was her 23rd title overall and the first after last year's Australian Open.
The 26-year-old world No.10, who had been desperately looking for a title that boosts her confidence after recovering from a knee surgery last year, was squaring off against a rival ranked more than 50 places below her at 67th.
Chochuwong maintained the advantage going forward and was placed 11-5 at the break.
However, Saina narrowed the gap to make it 10-13 before drawing level at 19-19 and then saving a game point.
Chochuwong could not handle the pressure thereafter as Saina drew from her experience to clinch the opening game after a 20-minute slog.
In the second game as well, Chochuwong was quicker off the blocks with a 3-0 lead but this time Saina did not leave it for too late and took the lead at 7-5.
The Hyderabadi remained in the lead, albeit slender, before blowing away four match points to help Chochuwong draw level at 20-20.
But the Indian managed to get over the hiccup and wrap up the issue soon after for what would be a massive morale-booster for her.
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