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Age Restrictions

Domestic Flights Within Japan



(Flight number IJ/Japan)

Age Restrictions


Guardian (adult over 12)


Infant (baby)

Less than 15 days after birth

Not permitted to board

15 days to 2 years


Seated on guardian’s lap

Child (child)

Age 2 to 6


Own seat

Age 6 to 12


Own seat


Over 12 years old

Not required

Own seat

For children traveling alone, please use the Junior Support Service, otherwise they will not be permitted to board alone. For more information, visit the Junior Support Service website.

Terms and Conditions

  1. No one under the age of 15 is permitted to sit in an exit row seat.

  2. Only one Infant can be accompanied by an adult over the age of 12.

  3. Infant fare is 1,500 yen per person per sector.

  4. Adult fares apply for children age 2 and older.

  5. There is a limit to how many infants can board each flight.

  6. Only one infant/child item per infant or child booking, such as a baby stroller, child restraint seat or carry-cot, can be carried on board free of charge

  7. We do not offer rental baby items.

  8. Child seats are not available on board.

Frequently Asked Questions

Q1. How many infants per adult are accepted?

A. Only one infant per adult. SPRING JAPAN does not permit purchase of seats for infants. All infants are to be seated on their guardian’s lap throughout the flight.

Q2. Can I use a child seat on board?

A. No, child seats cannot be used on board, however you may check in one item per infant/child, such as a baby stroller, child seat, carry-cot, or other baby items.

Q3. Can I bring my baby stroller on board?

A.No, you cannot bring it on board, including the airport rental baby stroller. However, if the folded size is within the carry-on size limit, you can fold it and bright it onboard it as carry-on baggage. For more information, see Carry-on Baggage.