What should you do before you fly?
- Move bedtime and wake time 15 minutes a day for 2–3 days.
- Pack the sleep cues: lovey, sleep sack, a familiar book, a portable white-noise machine.
What helps on the plane?
- Offer a sippy cup or snack on takeoff and landing.
- Let them nap at their usual nap time in destination time; do a mini bedtime routine if the flight overlaps night there.
- Pack new small toys to unwrap every hour of awake time.
What should you do after landing?
- Keep naps (they prevent overtired meltdowns) but cap them so none end after about 4 PM local time.
- Outdoor play during the light windows the calculator gives you: playgrounds, parks, walks.
- Early wakes (4–5 AM) are common after westbound trips: dim light, quiet activities, no breakfast until local morning.
- Late bedtimes are common after eastbound trips: start the routine on time even if they are not sleepy, with lights low.
What should you avoid?
- No melatonin for toddlers.
- Avoid long stroller or car naps late in the day.
Frequently asked questions
Should my toddler nap after a long flight?
Yes, but on local time, and wake them so no nap ends after about 4 PM.
How do I stop my toddler waking at 4 AM after a trip?
Keep the room dark, keep it boring, and hold off on breakfast and bright light until local morning. Evening daylight helps shift their clock later.
How long does toddler jet lag last?
Often 3–6 days after big time changes, less with a pre-trip head start and good daylight timing.
Can I give my toddler melatonin for jet lag?
No. It is not recommended for toddlers. Use light, naps and routine.
Route plans
- New York → London
- New York → Athens
- Los Angeles → Tokyo
- Denver → Rome
- Chicago → Tokyo
- Seattle → Paris
- Miami → Paris
- Atlanta → Paris
More guides
- With a baby (0–12 months)
- With kids 4–8
- With teens
- Flying east with kids
- Flying west with kids
- How long jet lag lasts
- Melatonin for kids
- Time difference chart
- Jet lag coming home
- Sleep kit checklist
- Jet lag not working?
- Jet lag gear for kids
- Travel insurance for families
Sources
- CDC Yellow Book 2026: Jet Lag Disorder. US Centers for Disease Control and Prevention guidance for travelers and clinicians.
- Eastman CI, Burgess HJ. How to travel the world without jet lag. Sleep Med Clin, 2009. The light-timing and pre-flight shifting method this calculator follows.
- American Academy of Pediatrics (HealthyChildren.org): Melatonin and children's sleep. Pediatric guidance on melatonin dose, timing and safety.
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.