Blade Air Mobility, Inc. Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Sep. 30, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of aggregate warrant liabilities as of September 30, 2021	$ 42,217	$ 0
Public Warrants
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of aggregate warrant liabilities as of September 30, 2021	27,317	0
Private Warrants
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of aggregate warrant liabilities as of September 30, 2021	14,900	$ 0
Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of aggregate warrant liabilities as of September 30, 2021	42,217
Fair Value, Recurring \| Level 1 \| Public Warrants
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of aggregate warrant liabilities as of September 30, 2021	27,317
Fair Value, Recurring \| Level 2 \| Private Warrants
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of aggregate warrant liabilities as of September 30, 2021	$ 14,900