Last updated: September 15, 2026 · Airline child-travel rules change — confirm with KLM for your route, or call us and we’ll set it up.
Quick answer
KLM's Unaccompanied Minor (UM) Service is mandatory for children ages 5–14 and optional from age 15. It costs €100–€150 per one-way on direct flights and €200–€300 with a transfer (minimum €100 one-way). Book it at least 24 hours before departure.
KLM UM service at a glance
| Detail | KLM Unaccompanied Minor Service |
|---|---|
| Ages 5–14 | Service is mandatory |
| Ages 15+ | Optional (can fly alone, or add the service) |
| Direct-flight fee | €100–€150 per one-way |
| Flights with a transfer | €200–€300 per one-way |
| Booking deadline | At least 24 hours before departure |
| Includes | Staff escort to/from the aircraft, and during any delay |
Age rules
Children aged 5–14 must use the UM Service to fly alone on KLM. From 15, teenagers may fly alone without it — but parents can add it optionally. Ages are counted at the moment of travel.
Fees & how to book
Buy the service during online booking (or via the KLM Customer Contact Centre, which can also add it to Air France– or Delta-operated flights). Book the child's flight plus the service at least 24 hours before departure. Fees: €100–€150 direct, €200–€300 connecting, converted to local currency.
What the service includes
Before departure and after arrival, KLM staff accompany the child to and from the aircraft, and stay with them in the event of a delay — a supervised hand-off at both ends.
Frequently asked questions
What age can a child fly alone on KLM?
The Unaccompanied Minor Service is mandatory for ages 5–14. From age 15 a teenager can fly alone, with the service optional.
How much is KLM's unaccompanied minor fee?
€100–€150 per one-way on direct flights and €200–€300 with a transfer, minimum €100 per one-way, converted to local currency.
How do I book KLM's UM service?
Add it during online booking, or through the KLM Customer Contact Centre — at least 24 hours before departure. The centre can also add it to Air France or Delta-operated flights.
What does KLM's unaccompanied minor service include?
Staff accompany the child to and from the aircraft before departure and after arrival, and stay with them during any delay.
Can under-5s fly alone on KLM?
No — KLM does not accept children under 5 travelling alone; they must travel with an adult.
Related resources
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Booking a KLM flight for a child alone?
UM rules, fees and the 24-hour booking deadline trip a lot of parents up. Call us and we’ll book the flight, add the Unaccompanied Minor Service correctly, and make sure everything’s documented — no stress.
📞 Call (571) 389-6426