Jet lag from New York to Seoul with kids

Seoul is 13 hours ahead of New York for most of the year (14 hours the rest of the year). Because you cross the International Date Line, your body experiences it as 11 hours west. Expect about 8 days to adjust, or 6 if you start shifting bedtimes 2 days before you fly.

Last reviewed · Based on published research

Trip at a glance

Get your exact plan for New York → Seoul

What does a family jet lag plan for New York → Seoul look like?

Sample built by the calculator for 2 adults and kids aged 3 and 8, departing Jul 1 with a 2-day head start. Home bedtimes: adults 10:30 PM, kids 7:30 PM, everyone up at 6:30 AM. Times before the trip are New York time; after arrival, Seoul time.

DayAdults bedAge 8 bedAge 3 bedLight
Day −2
at home
11:30 PM8:00 PM7:45 PMBright evening light
Day −1
at home
12:30 AM8:30 PM8:00 PMBright evening light
TravelSleep on the plane 12:45 AM–6:30 AM Seoul time
Day 1
arrive
9:00 PM6:30 PM6:30 PMGet light 4:55 PM–7:00 PM; Avoid 7:00 PM–9:00 PM
Day 29:00 PM6:30 PM6:30 PMGet light 2:30 PM–8:30 PM; Avoid 8:30 PM–9:00 PM
Day 39:00 PM6:30 PM6:30 PMGet light 4:00 PM–9:00 PM
Day 49:00 PM6:30 PM6:30 PMGet light 5:30 PM–9:00 PM
Day 59:30 PM6:30 PM6:30 PMGet light 7:00 PM–9:30 PM
Day 610:00 PM6:45 PM6:30 PMGet light 8:30 PM–10:00 PM; Avoid 6:00 AM–6:30 AM
Day 710:30 PM7:15 PM7:00 PMNormal daylight

How do you beat jet lag from New York to Seoul, step by step?

  1. Pre-shift at home: For 2 days before you fly, move bedtimes and wake times later each day (adults 60 min, kids 4–8 30 min, babies/toddlers 15 min), with bright light in the evening.
  2. Switch to destination time on board: Set devices to Seoul time and eat on its meal schedule.
  3. Sleep on the plane: Sleep about 12:45 AM–6:30 AM destination time.
  4. Time your light: Day 2: get bright light 2:30 PM–8:30 PM and avoid bright light 8:30 PM–9:00 PM. The windows move later each day; follow the daily plan.
  5. Bedtime on local time: Adults around 9:00 PM on night 1, reaching 10:30 PM by day 7. Wake at a fixed time even after a bad night.
  6. Short, early naps: Adults/older kids ≤ 20–30 min; little ones keep naps but on local time, ending by ~4 PM.
  7. Melatonin (optional): Usually not needed westward; adults 0.5 mg only for early-morning waking.
  8. Meals, caffeine, movement: Eat on local time, hydrate, skip alcohol, adults caffeine mornings only, outdoor activity in the light windows.

What's different about New York → Seoul?

What should each age do?

Guides by age

What about the trip home?

Coming home to New York is an 11 hours westward shift (usually easier): plan about 9 days to readjust. How to handle jet lag on the way home.

Frequently asked questions

How many hours ahead is Seoul from New York?

Seoul is 13 hours ahead of New York for most of the year (14 hours the rest of the year). Seoul does not use daylight saving time, so the gap is 13 or 14 hours depending on whether New York is on daylight time (mid-March to early November).

How long does jet lag last flying from New York to Seoul with kids?

About 8 days without preparation. Shifting bedtimes later for 2 days before you fly (15–30 minutes a day for kids, 1 hour for adults) cuts it to about 6. Kids usually follow a similar timeline when they get outdoor daylight at the right times.

Should kids sleep on the flight from New York to Seoul?

Yes, on a typical overnight departure. Sleep roughly 12:45 AM–6:30 AM Seoul time, which is night at your destination. Start a mini bedtime routine when the window opens.

What time should kids go to bed the first night in Seoul?

For kids who normally sleep at 7:30 PM: about 6:30 PM for an 8-year-old and 6:30 PM for a 3-year-old on night 1, moving to their usual time over the next 6 days. Adults around 9:00 PM.

Is jet lag worse coming home to New York?

The trip home is an 11 hours westward (delay) shift, usually the easier direction. Plan about 9 days to readjust, and run the calculator again for the return flight.

Do you lose a day flying from New York to Seoul?

On the calendar, yes: crossing the International Date Line moves you a day forward. Your body only experiences an 11-hour shift.

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Sources

How we turn this research into plans: methodology.

Not medical advice. General sleep and travel guidance based on published circadian research. Ask your doctor or pediatrician about melatonin or other supplements, pregnancy, medications or health conditions. Never give melatonin to babies or toddlers.