Real travel is never one clean flight. Jet Zzz is built for the way trips actually happen.
Add as many segments as you need. Jet Zzz tracks the cumulative time-zone shift across the whole journey.
Premium cabins make sleeping in the air realistic. Economy usually does not. Your plan adapts to which cabin you are in.
Long layovers are an opportunity to start adjusting in the airport, not just dead time. Jet Zzz factors them in.
Add fixed activities — meetings, events, family commitments — and Jet Zzz flags any clash with the recommended sleep windows so you can resolve them up front.
Export your plan to .ics for any calendar app, or to a PDF you can print or share.
Most jet lag tools online were clearly designed by someone imagining an idealized traveler: one flight, one time zone change, an empty calendar on arrival, and the freedom to sleep whenever the schedule says so. That traveler does not exist. Real trips are stitched together from connecting flights with awkward layovers, a middle seat in economy on the long leg, a meeting that starts six hours after you land, and a dinner reservation you cannot move without offending someone. Jet Zzz was designed from the opposite premise: the plan has to fit your life, not the other way around.
A trip from San Francisco to Bangkok might route through Tokyo with a four-hour layover. Two flights, three time zones, and a stretch of in-airport time that most planners simply ignore. Jet Zzz treats every segment as a first-class object: each leg has its own departure, arrival, cabin class, and aircraft time, and the engine tracks the cumulative phase shift across the entire journey rather than collapsing it to a single origin-to-destination delta. That matters because a layover at hour twelve of a journey is a completely different sleep opportunity than a layover at hour two.
Sleeping flat in a premium cabin is roughly four times more restorative than dozing upright in a middle seat in economy. The plan should know that. When you mark a long leg as business or first, Jet Zzz treats the in-air block as a real sleep opportunity and may recommend you go down right after meal service. In economy on the same route, the engine assumes you will get fragmented rest at best and shifts the heavy lifting of recovery to the first 48 hours after landing.
A six-hour layover in Doha at what would be 02:00 destination time is a chance to start shifting before you even arrive — dim lights, no caffeine, maybe a lounge nap. The same layover at 14:00 destination time is the opposite: bright light, walking, coffee. Jet Zzz tags every layover with its position on the destination clock and slots it into the plan accordingly.
You can mark events that the schedule must respect: a 9 a.m. board meeting the morning after you land, a wedding, a parent-teacher conference, a flight you are catching with a kid who has their own bedtime. The conflict panel flags every clash between a recommended sleep window and one of your fixed activities, ranks them by severity, and suggests workarounds. The point is not to pretend the conflict does not exist — it is to let you see and resolve it before you are standing in a hotel lobby at midnight regretting your decisions.
A plan trapped inside a browser tab is a plan you will forget the moment your battery dies on a connecting flight. Jet Zzz exports your schedule as a .ics calendar file you can import into Google Calendar, Apple Calendar, Outlook, or anything else that speaks iCalendar, and as a printable PDF you can stash in a seat-back pocket.
Jet Zzz will not give you a prescription, sell you a supplement, or promise that you will arrive in a new time zone feeling factory-fresh. It also will not ask you to create an account, sit through an onboarding video, or hand over your itinerary to a server. The scope is narrow on purpose: take the messy reality of one specific trip, turn it into a schedule that respects your constraints, and get out of your way.