Flying with Your Pet on Spring Japan: Everything You Need to Know

OK hear me out — taking Nala on a Spring Japan flight to explore Japan's incredible hiking trails and coastal towns is totally doable. I've learned the hard way what airlines actually require versus what they just *say* they require, and Spring Japan has some solid pet policies. Let me walk you through exactly what you need to know before you book.

Can You Bring Your Pet in the Cabin?

Yes! Spring Japan allows both dogs and cats in the cabin with you. This is huge because it means your furry friend stays with you during the flight instead of being separated in cargo. Trust me on this one — having Nala right there under the seat in front of me made a massive difference in her stress levels compared to cargo travel.

Here's the catch: your pet must be pre-booked at least 24 hours before departure. You can't just show up at the airport with your carrier and hope for the best. Spring Japan limits the number of pets per flight, so book early.

Cabin Carrier Requirements: Get the Dimensions Right

This is where most people mess up. Your carrier needs to fit under the seat in front of you, and Spring Japan has specific size limits:

  • Maximum length: 55 cm (about 22 inches)
  • Maximum width: 40 cm (about 16 inches)
  • Maximum height: 23 cm (about 9 inches)
  • Maximum combined weight (pet + carrier): 8 kg (17.6 lbs)

I learned this the hard way with Nala — she's 22 kg, so she definitely doesn't qualify for cabin travel. But if you've got a smaller dog or cat, measure your carrier before you buy it. Soft-sided carriers are preferred because they compress slightly and fit better under seats. Hard-sided carriers work too, but they're bulkier.

Inside the carrier, you must include:

  • An absorbent mat or liner (for accidents — it happens)
  • Proper ventilation (mesh sides are standard)

Cargo and Checked Baggage: For Larger Pets

Since Nala is too big for cabin, I've shipped her in cargo on other airlines. Spring Japan does allow pets in cargo, though the policy is less common than cabin travel. If you go this route, know that:

  • Hard-sided IATA-compliant crates are required — soft-sided carriers won't work
  • Your crate must have an attached water bowl that can be filled from outside
  • Ventilation openings on at least three sides are required per IATA regulations
  • An absorbent liner is mandatory
  • 'Live Animals' labels with orientation arrows must be clearly displayed
  • Your pet must be at least 10 weeks old

Cargo travel is stressful for pets, so I only recommend it for longer international moves where cabin isn't an option. The temperature matters too — airlines won't transport pets in cargo if tarmac temperatures exceed 29.4°C (85°F) or drop below -6.7°C (20°F). Plan your travel dates around this if you're flying to warm destinations.

Health Certificate: Non-Negotiable

This is the one document you absolutely cannot skip. Spring Japan requires a vet-issued health certificate for all pets, whether they're traveling in cabin or cargo. Here's what you need to know:

  • Get it issued within 10 days of your departure date — some destinations require 7 days, so play it safe
  • Your vet must sign it and include their official stamp
  • Even if Spring Japan's website doesn't mention it, airport staff will check for it
  • Don't risk being denied boarding at the gate

I always schedule my health certificate appointment 2 weeks before travel. That gives me a buffer in case my vet's office is busy, and it ensures the certificate is fresh.

Breed Restrictions: Check If Your Pet Qualifies

Spring Japan restricts brachycephalic (snub-nosed) breeds due to respiratory risks during flight. This is an industry-wide standard, not just Spring Japan being difficult. Restricted breeds include:

  • Bulldogs (all types: English, French, American)
  • Pugs (all types)
  • Boston Terriers
  • Boxers
  • Shih Tzus
  • Pekingese
  • Chow Chows
  • Japanese Chin
  • Mastiffs (all types)
  • Shar Peis
  • And many others — check the full list here

If your breed is on the list, contact Spring Japan directly to confirm whether they'll make an exception. Some airlines do, some don't.

Important Restrictions You Need to Know

No Sedation Allowed

IATA (International Air Transport Association) prohibits sedating pets during air travel. A sedated animal can't maintain balance or respond to emergencies. Don't do it, even if you think it'll help your pet stay calm. Work with your vet on natural calming strategies instead — I've had good luck with anxiety wraps and familiar toys for Nala.

Pregnant Animals Not Accepted

If your pet is visibly pregnant, Spring Japan won't accept her for travel. The stress and pressure changes during flight pose serious health risks. Plan your trips around breeding schedules.

Minimum Age Requirements

  • Cabin travel: at least 8 weeks old
  • Cargo/checked baggage: at least 10 weeks old
  • Puppies and kittens must be fully weaned

Cabin Fees: The Good News

Spring Japan charges no cabin pet fee for one-way flights. This is genuinely rare and awesome. Most airlines charge $100–$200 per pet per flight, so this is a huge win if you're flying with a small dog or cat.

Key Numbers at a Glance

  • Cabin carrier max length: 55 cm
  • Cabin carrier max width: 40 cm
  • Cabin carrier max height: 23 cm
  • Max combined weight (pet + carrier): 8 kg
  • Cabin pet fee: Free
  • Advance booking required: 24 hours minimum
  • Health certificate validity: 10 days
  • Minimum age (cabin): 8 weeks
  • Minimum age (cargo): 10 weeks
  • Max heat threshold (cargo): 29.4°C (85°F)
  • Min cold threshold (cargo): -6.7°C (20°F)

What You Need to Do: Your Pre-Flight Checklist

  • Book your pet at least 24 hours in advance — call Spring Japan directly or book online if available
  • Schedule a vet appointment 2 weeks before travel to get your health certificate
  • Measure your carrier and confirm it meets Spring Japan's dimensions
  • Check breed restrictions if you have a brachycephalic breed
  • Confirm your pet is old enough (8 weeks for cabin, 10 weeks for cargo)
  • Get your health certificate within 10 days of departure
  • Pack an absorbent liner for your cabin carrier
  • Bring your health certificate to the airport — have it easily accessible
  • Arrive early — pet check-in sometimes takes extra time

Pro Tips from My Experience with Nala

Get your pet used to the carrier weeks before your flight. I spent a month letting Nala nap in her carrier at home, with the door open, before we ever flew. By the time we got to the airport, she was calm because the carrier felt familiar.

Pack a small travel kit: collapsible water bowl, favorite toy, treats, and any medications. Even though your pet will be under the seat, having these items nearby helps you manage their comfort during the flight.

If you're flying to Japan, research local pet import requirements too. Spring Japan gets you there, but Japan has its own entry rules for pets.

Still Have Questions?

We're still verifying some details about Spring Japan's specific pet policies — contact Spring Japan directly for the most current information on booking methods, specific cargo fees, and any route-specific restrictions.

For a comprehensive overview of flying with pets internationally, check out our pet travel documents checklist and pet travel costs guide.

Get your free personalized travel plan from Pawgo — we'll help you navigate every step of flying with your pet.

Data last verified: January 2025. Pet travel policies change frequently. Always confirm directly with Spring Japan before booking. This guide reflects industry standards and Spring Japan's known policies as of the verification date.

Auto-generated from verified data · Last updated: April 23, 2026