Asia to USA Jet Lag Calculator
Flying from Asia to the USA is usually westbound, so your body clock needs to delay. The main challenge is staying awake through the US afternoon and protecting a normal first night.
Route Snapshot
Preset
Tokyo to Los Angeles
Time shift
Typical shift: 8 to 9 hours behind
Most Asia to USA routes cross 8 to 16 time zones westbound depending on the direction counted, with many travelers feeling the shift as roughly 8 to 9 hours behind.
quick answer
How to Handle This Route
For Asia to USA jet lag, use afternoon and early-evening light in the US, keep caffeine early, avoid long arrival-day naps, and hold bedtime until a normal local hour.
Light
Get outdoor light in the US afternoon and early evening to delay your body clock. Avoid bright light very early in the morning if it wakes you too early.
Sleep
Do not go to bed as soon as you land unless you are unsafe to stay awake. If you must nap, keep it short and before mid-afternoon.
Flight
Stay awake through the daytime flight when possible, hydrate, move around, and avoid alcohol so you can arrive ready for a normal local evening.
route preset loaded
Build Your Sleep and Light Plan
The calculator is prefilled for Tokyo to Los Angeles. Adjust the cities, departure time, or flight duration if your itinerary is different.
Flight Details
Time Shift
17 Hours Behind (West)
Arrival Time (Local)
05:00
Beat Jet Lag Naturally
Enter your route, flight duration, and local flight times to generate a highly tailored in-flight plan and 24-hour adjustment schedule.
Important
This route plan is for general travel planning only and is not medical advice. Consult a clinician if you have a sleep disorder or chronic health condition before relying on timed light or melatonin schedules.
faqs
Route-Specific Jet Lag Questions
Is Asia to USA jet lag easier than USA to Asia?
Many travelers find Asia to USA easier because it is usually westbound. Your body clock delays, but the long flight and early local arrival can still make the first day difficult.
Should I nap after landing in the USA?
Only if you need to stay safe and functional. Keep the nap short, around 15 to 20 minutes, and avoid napping late in the afternoon.
When should I get light after flying Asia to the USA?
Afternoon and early-evening outdoor light can help delay your body clock toward US time. Keep the first morning light moderate if you are waking too early.
How long does Asia to USA jet lag last?
Most travelers adjust in two to five days. Sleep debt, caffeine timing, and whether you force a normal local bedtime all affect how fast you recover.