At list prices, the Hong Kong Aviation Capital deal is worth $6.3 billion, while Spirit is new orders are worth $2.1 billion.Both the A320 and the A321 are on the smaller side; each seats about 180 passengers, though the A321 can be configured for up to 220.Smaller jet purchases have made up the bulk of the orders this year as airlines renew their fleets or expand into new markets, notably in Asia