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Аннотация:The Airy phase is the frequency at which group velocity of a surface acoustic wave (SAW) attains a stationaryvalue. In turn, a stationary value of the group velocity causes SAW to propagate with a lesser attenuation than at otherfrequencies. At present, no conditions for the appearance of stationary values of the group velocity are known for dispersivemodes of Lamb waves propagating in stratified plates. Herein, the closed form solutions are derived for double zero groupvelocity (ZGV) belonging to the same Lamb mode. It is also found that the double ZGV leads to the appearance of theAiry phase located between the twofold ZGV. The analysis relies on the Cauchy formalism and the exponent fundamentalmatrix method.