Ridden by Barry Geraghty, registering a short-priced double on the day, the G1 Stan James Champion Hurdle winner travelled ominously well throughout the contest and quickened up nicely after the final flight to win by five lengths.
Stable companion My Tent Or Yours (8/1) finished second to the winner at the Cheltenham Festival and stayed on well in the closing stages to fill the same position here.
Long-time leader The New One (11/2), trained by Nigel Twiston-Davies, tired late on to finish one and a half-lengths further back in third.
A delighted Henderson said: “However easy you win at Cheltenham, you always have tough races so you have to come back and do it here. They both have come out of it well.
“We gave them a quiet 10 days after that but Buveur D’Air looks big. He is doing everything right now and he does get that trip well – he saw it through really well.”
Seven Barrows maestro Henderson was also pleased with the performance of My Tent Or Yours, who like the winner is owned by J P McManus. Henderson continued: “If anybody deserves to win a race like this, it is him. However, where else can we go with him, there is nowhere so we had to come here. You have to admire him.
“They both confirmed the Cheltenham form and he is the old boy and Buveur D’Air is the young buck. Tent you have to admire him.”
3.25pm Betway Aintree Hurdle (Grade 1)
1 BUVEUR D’AIR (J P McManus) Nicky Henderson 6-11-07 Barry Geraghty 4/9 Fav
2 My Tent Or Yours (J P McManus) Nicky Henderson 10-11-07 Aidan Coleman 8/1
3 The New One (S Such & CG Paletta) Nigel Twiston-Davies 9-11-07 Sam Twiston-Davies 11/2
Distances: 5, 1½
Tote: Win: £1.40 Places: £1.10; £2.70 Exacta: £3.40