BlogTravel TipsKLM Infant Policy: Three Bassinet Limits, All Measured on the Day
KLM Infant Policy 2026: Bassinet Limits and Lap Children

KLM Infant Policy: Three Bassinet Limits, All Measured on the Day

Quick answer: A baby under 2 can travel on an adult's lap on KLM at a reduced infant fare. The bassinet rules are unusually precise and worth reading before you plan around one: the baby must be under 1 year old, under 10 kg and under 65 cm, and all three are assessed on the day of travel rather than at booking. Requests go through the contact centre and bassinets are on intercontinental flights only. A nine-month-old who is tall will frequently fail on length alone. Call a travel expert at Fond Travels on +1 (323) 800 6001.

Details below reflect what was published at the time of writing. Confirm them for your flights.

The three bassinet limits

  • Under 1 year old on the day of travel. This is a stricter age ceiling than most airlines, which work on weight alone.
  • Under 10 kg.
  • Under 65 cm. This is the one that catches families — 65 cm is reached by many babies well before their first birthday.
  • All three assessed on the travel date, not when you asked. A baby who qualified when you booked may not by the time you fly.
  • Intercontinental flights only.
  • Requests go through the contact centre, and nothing is confirmed until you board.

Measure your baby lying flat and weigh them before you plan around a bassinet. If they are near any of the three limits and the trip is months away, assume they will not qualify and plan accordingly — a purchased seat with an approved car seat is the realistic alternative.

The age and fare rules

  • Under 2 on the travel date qualifies as a lap infant, assessed per segment.
  • A second birthday mid-trip means a purchased seat for the return.
  • A reduced infant fare applies on international journeys, typically a percentage of the adult fare plus taxes.
  • It buys carriage, not a seat.
  • Only one lap infant per adult.

Who operates your flight matters

This airline runs a transatlantic joint venture with two partners, and a ticket sold under one name is frequently flown by another.

  • Infant rules, bassinet limits and allowances differ between the partners.
  • Ask who operates each leg before you plan around a particular bassinet limit.
  • On a two-leg trip the answer can differ between the long-haul sector and the European connection.
  • The booking channel can matter too for infant arrangements on partner-operated flights.

Lap or a seat of their own

The safest way for a baby to fly is in an approved child restraint in their own seat — in turbulence an adult's arms are not a restraint. A lap infant is legal and extremely common, but it is the affordable option rather than the safe one.

Given how easily a baby fails the 65 cm bassinet limit, the seat question comes up earlier here than on airlines with more generous limits. Price it rather than assuming the bassinet will be there.

Car seats and strollers

  • An approved car seat can be used on board where you have bought a seat, carrying a label the airline recognises.
  • European and US approval marks differ. Check a US-bought seat before travelling rather than at the gate.
  • Strollers and car seats are generally carried at no additional charge, checked or gate-checked.
  • Gate-check the stroller so it stays with you through the terminal.
  • Use a padded bag for gate-checked items.

Documents for the baby

  • A passport, including for a newborn. No exemption for infants, and processing takes weeks.
  • Any travel authorisation the destination requires for the infant — European requirements apply to children too.
  • A consent letter where only one parent travels, which several European countries expect.
  • A birth certificate, useful where surnames differ.
  • Check requirements by the baby's nationality.

Baggage for a baby

  • Ask about the infant's allowance rather than assuming there is none — European carriers frequently give a lap infant a small checked allowance.
  • A stroller and car seat are generally carried in addition.
  • Formula, breast milk and baby food are exempt from the usual liquid limits in reasonable quantities.
  • Pack for the whole journey, including the European connection.

Booking a trip around a baby's day

  • Fly when your baby normally sleeps where the schedule allows.
  • Nonstop beats a connection, though on this network a hub transfer is usually part of the trip.
  • Leave real margin on the transfer — the hub is large and the walk with a pram is long.
  • Consider the time difference, which with a baby takes longer to settle than for adults.
  • Avoid the last departure of the day.

Travelling as two adults, or as one

  • Two adults: a window and an aisle on a three-seat row often leaves the middle empty.
  • One adult: an aisle seat is worth more than a window.
  • Only one lap infant per adult.
  • Whoever is not holding the baby carries everything else.
  • Agree in advance who does what at security and boarding.

Getting through the airport

  • Allow far more time than you would alone.
  • Use the family lane at security where one exists.
  • You will carry the baby through the detector while the carrier is scanned.
  • Keep milk, formula and food accessible.
  • Change the baby immediately before boarding.
  • Find the changing facilities at the hub in advance.
  • Do not rely on buying supplies airside.

The flight itself

  • Feed on the way up and the way down. Sucking equalises ear pressure.
  • Do not wake a sleeping baby for descent.
  • Dress in layers.
  • Request a baby meal in advance if the child is on solids.
  • Ask which lavatory has the changing table.
  • Accept help when it is offered.

What families most often get wrong

  • Planning around a bassinet without measuring. The 65 cm length limit is the one that fails babies, not the weight.
  • Assuming the limits are checked at booking. They are assessed on the travel date.
  • Not asking who operates each leg, where partner rules differ.
  • Assuming the infant fare buys a seat.
  • Leaving the baby's passport until the flights are booked.
  • Booking a tight hub connection with a pram.
  • Travelling without a consent letter where only one parent is going.

The first flight, and what actually goes wrong

Parents booking a first flight with a baby almost always worry about the wrong thing. The crying is what everyone fears; it is rarely what causes the problem.

What actually goes wrong is timing. Families arrive with the margin they would allow themselves alone, then find that a nappy change, a feed, a security queue with a pram and a child who will not go in the carrier have eaten an hour. The fix is simple and unglamorous: leave earlier than feels reasonable, and accept that you will sometimes be sitting at the gate with nothing to do. That is the good outcome.

The second thing is supplies. People pack for the flight rather than for the day. A two-hour flight that becomes a six-hour day after a delay needs more feeds, more nappies and more changes of clothes than the schedule suggests — and airside there is frequently nothing to buy, or nothing in the brand your baby will accept.

The third is the other passengers, and here the worry is mostly misplaced. Cabin crew deal with babies constantly and are generally very good with them. Most passengers are more sympathetic than parents expect, particularly if you look like you are coping rather than apologising. Walking the aisle with an unsettled baby is normal and nobody minds.

A short packing list for the cabin bag

  • More feeds than the flight needs — assume a delay.
  • More nappies than the flight needs, with wipes and a changing mat.
  • Two changes of clothes for the baby, and one top for you. Both get used more often than people expect.
  • Nappy bags, since not every aircraft lavatory has a bin that takes them.
  • A muslin or blanket, which doubles as shade, a feeding cover and something familiar.
  • Any medication, including infant paracetamol if your doctor approves it — a baby who becomes unwell in the air is not a situation to improvise.
  • A dummy or comforter, and a spare, because the first one will go on the floor.
  • The documents in one folder rather than spread between a bag and a phone.

How Fond Travels can help

  • We check your baby against all three bassinet limits — age, weight and length — for the travel date rather than the booking date.
  • We request the bassinet through the right channel and tell you honestly how likely it is.
  • We confirm who operates each leg, since partner infant rules differ.
  • We price the alternative where the bassinet is unlikely, rather than leaving you to find out on the day.
  • We check the passport, authorisation and consent position for the baby.
  • We answer at any hour, which with a baby in the house is more useful than it sounds.

To plan a trip with a baby, call +1 (323) 800 6001. A travel expert answers any hour.

Fond Travels, LLC is an independent travel agency. We are not affiliated with or endorsed by any airline; airline names are used only to identify the flights we book.

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Prefer to talk it through? A travel expert answers 24/7 at +1 (323) 800 6001.

FAQ’s

How old can a lap infant be?

What does a lap infant cost?

Does it matter which airline operates my flight?

Can one adult travel with two babies?

Will my American car seat be accepted?

Does my baby need a passport?

Does my baby need a travel authorisation?

Do I need a consent letter?

Does my baby get a baggage allowance?

Can I take formula and breast milk through security?

How much margin should I leave on the hub connection?

Is a lap infant safe?

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Should I book a seat for the baby or not?

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Which limit catches people out?

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How do I request one?

About the author
Cynthia Lucas
Cynthia Lucas

Cynthia Lucas, an accomplished travel writer, joined Fond Travels in 2017, contributing expertise to global travel content. She specializes in affordable travel, helping thousands of readers discover the best flight deals, hotel discounts, and effective itinerary strategies. With firsthand travel experience across various regions and countries, Cynthia combines practical advice with insider insights. Her work has been featured in travel blogs, agency newsletters, and independent trip guides, establishing her as a trusted voice for budget-conscious travelers.

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