Travel + Leisure debuts online booking and subscription memberships

From private-jet clubs to theme park memberships, subscription services are increasingly the way to go when it comes to vacations and other leisure trips.

For example, Internet sites Tripadvisor and Scott’s Cheap Flights — both free to users in their basic versions — this year have each rolled out premium membership plans that offer those willing to pay an annual fee extra perks and access to special pricing.

Now, Travel + Leisure Co., which owns about 20 resort, travel club and lifestyle travel brands, is staking its claim to the space with its new online Travel…