Frontier Airlines (F9) is the US ultra-low-cost carrier that accepts cabin pets at one of the lower price points in the domestic market. Their pet program is straightforward, but the booking system is online-only and cabin space rules are strict. Nala has not flown F9, but a friend who flew Denver to LAX with their cat described F9 cabin handling as pleasant and the gate agent as more knowledgeable about pet policy than most. The single decision is the carrier-fit at the gate.
F9's pet policy splits into cabin and cargo. This page summarizes the weight limits, fees, brachycephalic-breed restrictions, and carrier specifications for both modes — sourced from the airline's official pet pages.
How F9 treats your pet
Cabin policy
| Item | Detail | Source & confidence | |
|---|---|---|---|
| Pets accepted | Accepted in the cabin | 95% | |
| Minimum age | 8 weeks old | 75% | |
| One-way fee | 99 USD | 89% |
Hold policy
| Item | Detail | Source & confidence | |
|---|---|---|---|
| Pets accepted | Not accepted in the hold | 95% | |
| Snub-nosed (brachycephalic) breeds | Not yet documented | — | |
| Minimum age | 8 weeks old | 85% |
Cargo policy
| Item | Detail | Source & confidence | |
|---|---|---|---|
| Pets accepted | Accepted in the cargo | 95% | |
| Minimum age | 8 weeks old | 85% |
Frontier requires pets to be at least 8 weeks old to travel in the cabin. Younger pets are not accepted even when they meet the carrier dimension and weight rules. Verify the pet's age against the travel date, not the booking date, because puppies and kittens that age into eligibility during the booking-to-travel gap still need documentation showing they hit the 8-week mark by departure.
Frequently asked
- How much does it cost to fly a pet on F9?
- On flights within Metropolitan France, F9 charges from 99 USD in the cabin, one way per pet. Longer routes cost more — price your exact itinerary.
- What if my flight is delayed past my health certificate validity?
- If the certificate window expires before you board, you'll need a re-issue. Build a 1-2 day buffer between the cert date and departure to absorb minor delays.
- What happens if I forget a document?
- At the destination airport: at best, an extended inspection while you produce backup; at worst, the pet is held in quarantine or returned to origin at your cost. Bring printed copies.
Frontier charges 99 USD per leg for cabin pet travel, which is among the lower per-leg fees in the American ultra-low-cost segment. The fee is collected at booking through their online flow or at the airport check-in counter. Multi-leg journeys multiply the fee per segment, so the total cost on connecting itineraries climbs faster than the headline number suggests.
For Frontier: confirm your pet is at least 8 weeks old at travel date (not booking date), book the cabin slot online at the same time as your ticket, budget around 99 USD per leg, and verify the carrier dimensions match Frontier's standard before arriving at the gate. F9's gate agents are surprisingly knowledgeable for an ultra-low-cost carrier. Build your plan against your departure date in Pawgo before booking — it confirms cabin capacity for your specific F9 flight.
Glossary
- ISO chip
- ISO 11784/11785 — the universal microchip standard.
- FAVN
- Fluorescent Antibody Virus Neutralization — a rabies serology test required by rabies-free destinations.
- Brachycephalic
- Snub-nosed breeds (French Bulldogs, Pugs, Persians, Himalayans) with restricted airline acceptance due to heat-stress risk.
- AVIH
- Animal Vehicle In Hold — IATA's term for cargo pet shipment, with fees that vary by carrier and route.