Subscription flights

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Name: OneGo.

What it does: An app-based monthly subscription entitles you to flights on Alaska, American, Delta, JetBlue, United, and Virgin America. There are more than 700 routes at 76 major airports.

What's hot: Subscription rates start at $1,500 a month for flights at 14 airports in the West, including Los Angeles International Airport; Orange County, Calif.'s John Wayne Airport; San Diego; and Las Vegas; $1,950 with access to 18 airports in the central region; and $2,300 a month for access to 39 airports in the East. There is a one-time setup fee of $495. You can have four open reservations at one time. Members can book a flight seven days to one month in advance. You can also book a flight up to six hours before departure for an additional late-booking fee. Worried about collecting points with your existing loyalty programs? Don't be. You will continue to earn frequent-flier miles and participate in rewards programs as usual.

What's not: The cost, but if you're a business traveler, you might fly enough to justify the monthly fee.