Airline freight, and why the crate decides it

Airlines price live animals on chargeable weight: whichever is greater, the actual weight or a volume figure worked out from the crate. For pets the volume figure almost always wins, which is why crate size drives the flight cost more than the animal does.

The volumetric divisor is the industry standard 166 cubic inches per pound. The rates come from the American Airlines Cargo public tariff, the tariff these estimates are calculated against. Current version checked August 2026.

Crate sizeApprox. dimensionsChargeable weightFreight
Small (cat or toy dog) (size 100)21 x 16 x 15 in14 kg$420
Medium (size 200)28 x 20.5 x 21.5 in34 kg$427
Large (size 400)36 x 25 x 27 in66 kg$653
Giant (size 700)48 x 32 x 35 in147 kg$948

These are our own calculation from the published rate and divisor, for a direct booking. A connecting routing or a carrier that quotes rather than publishes will differ.

Whichever carrier takes the booking sets its own hold conditions, crate rules and pet charges, and those vary more between airlines than the fares do. Our list of the airlines that carry pets internationally covers which carriers accept live animals out of the US, and our comparison of US airline pet policies puts the big carriers side by side. The freight mechanics on this page come from American Airlines Cargo, whose conditions are set out in full in our guide to the American Airlines pet policy.

The rest of the bill

CostAmountWho charges it
USDA export endorsement$101 per certificateUSDA APHIS
IATA crate$65 to $378 depending on sizeRetailer
Vet exam, certificate, translationSet by your clinicYour vet
Airline live animal processing$150 per air waybillAirline
Import permitNoneNot applicable
QuarantineNone for a compliant petNot applicable

The endorsement is per certificate, not per pet, so two animals on one certificate share it.

What is not included here

Your vet sets their own fees. The examination, the certificate paperwork and any blood draw are priced by your clinic and vary between practices. Ask your vet directly. Every laboratory we checked states plainly that the draw is the clinic’s charge, not theirs.

Ground transport at either end is quoted per route. Our coordination fee is included in the total we quote you and itemized on your invoice.

What moves the price

Crate size is the single biggest lever, because it drives chargeable weight. Direct routings cost more per kilogram than they look but remove transfer handling. Season matters too: summer heat embargoes narrow booking windows, and winter cold rules do the same on some routings. Two pets on one certificate share the USDA endorsement, while each extra pet adds its own crate and freight.

Figures and sources

Freight from the American Airlines Cargo public tariff. Export process from USDA APHIS, US to Costa Rica. Arrival clearance sits with SENASA. Checked August 2026.

Want this priced for your pet and dates?

Send us the route, the breed and roughly when you want to travel. Request a quote and we will reply with an itemized plan, a timeline and clear next steps.

For entry rules and the full paperwork timeline, see our guide to pet shipping requirements for Costa Rica.

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