A guide to child train tickets in the UK: What parents need to know

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Kieran Read
Published: Jun 26, 2025
Updated: Sep 3, 2026
A guide to child train tickets in the UK: What parents need to know
Planning a family day out or travelling with little ones by rail? Good news: train travel in the UK is often both child-friendly and budget-friendly. But when it comes to children’s train tickets, there are a few important rules, age limits, and tips that every parent or carer should know.
We’re here to help you find the best tickets for the whole family. Here's everything you need to know about child train fares and how to save on your next journey.
A child by train window

At what age do children need a train ticket in the UK?

Here’s a super quick breakdown of how UK rail defines ‘child’ passengers:
Age range
Do they need a ticket?
Notes
Under 5
No ticket needed
Travel free, no seat guarantee
5-15
Yes, child ticket required
Usually 50% off an adult fare
16+
Adult ticket required
Full price, unless using a 16–17 Saver or Railcard

Children under 5: Travel free

Children under 5 years old travel for free on UK trains when accompanied by a fare-paying adult. You don’t need to book a ticket for them, but it’s pretty crucial to note:
  • They won’t be guaranteed a seat - if the train is full, they may have to sit on your lap.
  • If you want to reserve a seat for your child under 5, you’ll need to pay for a child fare.

Children aged 5-15: Child fares apply

Children aged 5 to 15 are eligible for discounted tickets, typically priced at 50% of the adult fare. This applies to:
  • Advance tickets
  • Off-Peak & Anytime tickets
  • Railcard-discounted tickets (when applicable)

Do you need ID to prove a child’s age?

Usually, no ID is required when buying or using child tickets. However:
  • If your child looks older than 15, train staff may ask for proof of age
  • It’s helpful to carry a passport or student ID if your child is tall for their age
Some ticket inspectors can issue penalty fares if they believe a child ticket is being misused.

Railcards for older kids and families

Planning regular travel for teens? A Railcard can offer major savings:

16–17 Saver

  • 50% off most rail fares, just like a child
  • Costs £35 per year
  • Perfect for college students or those commuting regularly

16–25 Railcard

  • 1/3 off most fares
  • Costs £35 per year or £80 for three years
  • For older teens and students
  • Includes weekday time restrictions (minimum fare before 10 am weekdays)

Family & Friends Railcard

  • Up to 4 adults and 4 children can travel on one card
  • 1/3 off adult fares and 60% off child fares
  • Valid for a whole year for just £35 or three years for £80
  • Great for school holidays, weekend getaways, and big family visits.
Railcards can be booked through and added directly when booking tickets on Trip.com.

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