Travelling With PetsThrough Heathrow

Flying a pet through Heathrow is very different from packing a suitcase — and the single most important thing to know up front is that most pets don’t travel in the cabin. They fly as manifest cargo in the hold and pass through a dedicated animal border facility for veterinary and document checks before they’re released to you. This guide explains exactly what happens, the rules and costs, how to give your pet the smoothest possible journey, and how the process differs for assistance dogs.

Unlike some countries, the UK generally does not allow pets to travel in the passenger cabin into Heathrow. With the exception of recognised assistance dogs, your dog or cat will travel as manifest cargo in a pressurised, temperature-controlled section of the hold — conditions kept similar to the cabin — booked through the airline’s cargo service rather than as hand luggage.

That means your pet’s journey runs on a separate track from yours: they’re loaded and unloaded by trained staff, taken to the animal reception facility, checked, and released to you after you’ve cleared your own arrival. Modern aircraft holds used for live animals are pressurised and temperature-controlled to IATA Live Animals Regulations standards.

The Heathrow Animal Reception Centre, near Terminal 4, has been run by the City of London Corporation since 1977 and is the only Heathrow facility licensed for every species — handling around 22,000 dogs and cats a year alongside horses, reptiles, birds and fish. It has free customer parking for collections.

Exporting from GB? You’ll typically need an Export Health Certificate (and, in GB, an export application form), with checks by an official vet. Heading to the EU? Note that GB-issued pet passports are no longer valid for EU or Northern Ireland travel — you’ll need an AHC for each trip. Rules vary by destination and origin; always verify on GOV.UK.

The HARC fee is only one line on the bill. Plan for several separate costs:

• HARC import boarding — around £203 if a pre-check is performed on your PETS paperwork, or about £279 if not, plus roughly £52 for each additional pet.
• Airline cargo charge — varies by airline, route and crate size.
• Animal Health Certificate / vaccinations — your vet’s fees.
• IATA-approved crate — bought or built to size.
• UK customs agent — required on import.

A professional, accredited pet-relocation company (look for IPATA/IATA membership) bundles most of this — flight booking, crate, check-in and customs — which is why many owners use one for anything beyond a simple short hop.

The crate: airlines follow strict IATA guidelines — the container must be strong, secure and big enough for your pet to stand, sit, lie down and turn around naturally. As a rough sizing guide, the crate length should be at least your pet’s nose-to-tail length plus half a leg length, and its height at least your pet’s full standing height. A correctly sized, sturdy crate makes the journey far calmer, so measure carefully (or have a shipper build one).

Breed restrictions: many airlines restrict or refuse brachycephalic (flat-faced) breeds — bulldogs, pugs, Persian cats and similar — because their breathing can struggle at altitude. If you have one of these breeds, check your airline’s policy early; it may shape which carrier and route you can use.

Recognised assistance dogs are treated very differently from pets. They can travel in the cabin with their owner and don’t go through the cargo kennelling process — but they still must meet the standard dog entry requirements and get specific approvals. The numbers are rising fast: Heathrow’s reception centre handled around 1,800 assistance animals in a recent year, up more than 110% since 2021.

The key steps:

• Get HARC approval at least 72 hours before your flight to the UK — you’ll be asked to show the acceptance letter before boarding.
• Tell your airline at least 48 hours ahead (often when booking), including return details. Most airlines accept assistance dogs.
• At the airport, head to the Assistance area; on arrival or connection, a member of the Assistance team meets you at the aircraft.
• Keep evidence of training to hand, and check cabin arrangements with your airline (space, harness for take-off and landing).

For the full range of accessibility support beyond dogs, see our forthcoming Heathrow special assistance guide.

Every Heathrow terminal now has dedicated relief areas with hard and soft surfaces where animals can go to the toilet, both before security and airside. They’re calm, hygienic and signposted — but note that you must bring your own waste bags, as these aren’t provided (bins are). Exact locations vary by terminal and level, so follow the signage or ask a member of staff, and check Heathrow’s official assistance-dog page for the current list before you travel.

The cargo and border process is handled by your airline, HARC or a specialist shipper — that part isn’t something a taxi can do. What RushXO can do is the human side of the day, calmly and door-to-door:

• Travelling with a pet in a carrier or an assistance dog? We provide pet-friendly transfers to the terminal by prior arrangement — just tell us about your animal when you book.
• Collecting a relocated pet? We’ll run you to the Animal Reception Centre near Terminal 4 and home again, with room for the crate.
• Door-to-door, fixed fare, 24/7 — meet & greet, flight tracking, no surge, and space for luggage and a pet carrier together.

To keep everyone comfortable, let us know the type and size of your pet (and whether it’s an assistance dog) at the time of booking so we send the right vehicle. See our main Heathrow taxi service for fares and vehicles.