We've taken our own dogs on road trips, flights, weekend hotel stays, and across borders. We've also heard from thousands of small-dog parents about what worked and what didn't. This guide pulls together everything we've learned into a single, practical playbook.
It's organized so you can read it cover-to-cover if you're planning your first trip, or jump to a specific section if you have a specific question. We'll cover pre-trip preparation, car travel, air travel, hotels and destinations, anxiety mitigation, and a short list of gear that genuinely helps.
Most of all, we'll be honest about what's hard. Traveling with a small dog isn't seamless — but it's far easier than people think, and the moments when your dog is asleep in their carrier next to you in a coffee shop in a city you've never visited together are worth every bit of preparation.
Section 1: Pre-trip preparation (the work that pays off in the first hour of the trip)
The single best thing you can do for a smooth trip is start preparing two weeks before you leave.
Vet check. Two weeks out, schedule a vet visit. You're checking three things: that your dog is healthy enough to travel, that vaccines are current (some airlines and hotels require recent rabies certificates), and that you have any prescription medications you'll need.
Health certificate. For air travel — especially international — most airlines require a health certificate signed by a USDA-accredited vet within 10 days of departure. Domestic flights have less stringent requirements but still confirm with your specific airline.
Microchip and ID. Confirm your dog's microchip registration has your current contact info. Add a temporary tag to their collar with your phone number and the destination address. We can't overstate how much this matters — most lost-dog reunions happen because of the tag, not the chip.
Supplies list. Pack:
- Food for the duration plus 2 extra days
- A familiar bowl
- Treats (pre-portioned in small bags)
- Poop bags (more than you think — airports, hotels, and cafes go through them fast)
- Pee pads (essential for plane bathroom emergencies)
- A familiar blanket or bed item — something with your home's scent
- Their regular leash and a backup
- Any medications in original prescription bottles
The most overlooked item: something with the scent of home. A favorite blanket, a piece of fabric from their bed, even a t-shirt you've worn. Dogs orient by smell more than people realize. We'll come back to this in the anxiety section.
Section 2: Car travel — safety and comfort
A dog roaming free in a moving car is a real safety risk. A 10-pound dog at 50 mph exerts about 500 pounds of force during sudden braking. That's not a scare statistic — it's physics. The same logic that makes seatbelts non-negotiable for humans applies to dogs.
Your three safe options for car travel:
Crash-rated carriers or pet seats. A structured carrier that buckles into the car seat is by far the safest option for small dogs. The carrier itself contains the dog AND attaches to the seatbelt system. Look for raised walls (your dog can see out without standing on the console), a built-in safety leash that clips to the harness, and a base that doesn't sag.
This is exactly what we built the H&H Copilot to be — a structured, airline-approved carrier that doubles as a car seat with a built-in safety leash. It clips into the seatbelt, your dog stays contained, and the structured base keeps shape even when fully loaded.
Crash-rated harnesses. For larger small dogs who don't fit a carrier (15+ lbs and up), a properly fitted crash-rated harness works. Look for ones tested by the Center for Pet Safety. Avoid generic "seat belt clip" harnesses sold at pet stores — most aren't rated for actual crash forces.
Hard crates strapped into the cargo area. For larger SUVs or station wagons, an airline-rated hard crate strapped to the cargo tie-downs works well. Less convenient than a front-seat carrier for small dogs, but excellent for safety on longer drives.
On the road, the things that actually matter:
- Stop every 2 hours minimum. Bathroom, water, brief stretch.
- Keep the cabin at 65–72°F. Dogs overheat faster than humans, especially flat-faced breeds.
- Never leave your dog in a parked car. Even on a 70°F day, internal temperatures can hit 100°F in 30 minutes.
- Bring a "go bag" with water, a collapsible bowl, treats, and poop bags within reach.
- Don't feed within 2 hours of departure if your dog is prone to carsickness.
Section 3: Air travel — the under-seat reality
Flying with a small dog is more straightforward than people think — but the rules vary by airline, and small mistakes at the gate can derail your trip.
Step 1: Confirm your airline's policy BEFORE you book.
Most major US carriers allow small dogs in cabin if they fit under the seat in front of you. Each airline sets its own dimensions. The most common under-seat space is around 18″ L × 11″ W × 11″ H — but Spirit, Frontier, JetBlue, Alaska, and the legacy carriers all vary slightly. Always check the specific aircraft type for your route, since dimensions vary between narrow-body and wide-body planes.
Step 2: Know the fees.
Most US airlines charge a $95–$150 pet-in-cabin fee per direction. Some require advance booking (call when you book your own ticket; the pet slot may sell out separately). Each flight is limited to a small number of in-cabin pets total.
Step 3: Carrier requirements.
Your carrier must be soft-sided (rigid carriers usually exceed under-seat dimensions), airline-compliant in size, and well-ventilated. The carrier counts as your personal item — meaning you give up that under-seat space for the entire flight.
The H&H Copilot is designed for under-seat fit on standard major US carriers. The soft frame allows for slight compression at the gate, which is critical — many "airline approved" rigid carriers fail at the gate because they can't squish.
Step 4: At the airport.
- Arrive early. The check-in process for pets takes longer than usual.
- Use pee pads in the carrier in case of accidents. Dogs hold their bladders less reliably under stress.
- At security, you'll carry your dog through the metal detector while the carrier goes through the X-ray.
- Do NOT sedate your dog without explicit vet approval. Sedation at altitude can cause breathing issues for any dog and is dangerous for brachycephalic breeds (Frenchies, Pugs, Shih Tzus).
Step 5: On the flight.
Your dog must stay in the carrier under the seat for the entire flight. They can't come out. They can't sit on your lap (regardless of how empty the cabin looks). Bring chew toys or familiar treats to keep them occupied. If your dog drinks during the flight, offer water but not food — full bellies plus turbulence is a bad combination.
Section 4: Hotels and destination etiquette
Pet-friendly hotels have multiplied dramatically in the past decade. Most major chains (Kimpton, Aloft, Hyatt Place, La Quinta, Marriott Residence Inn) have brand-wide pet policies. Boutique hotels vary widely.
Booking:
- Always confirm pet policy and any fees at booking time (not at check-in). Some hotels charge $25/night, others $150/stay, others nothing.
- Note any size limits. Many hotels cap pets at 25–50 lbs, which is fine for small dogs but worth confirming.
- Read recent reviews for pet-related comments. A hotel that "allows" pets and one that "welcomes" them are very different experiences.
Hotel etiquette:
- Bring your dog's bed or blanket. They'll settle faster in an unfamiliar room with familiar scents.
- Use the pet relief area shown on the hotel map. Don't let your dog relieve themselves on landscaping right next to entrances.
- Never leave a dog alone in the room barking. If you must leave, use a covered crate and consider doggy daycare for longer absences.
- If your dog has an accident, tell housekeeping. Honesty here is appreciated and helps the hotel continue allowing pets.
Restaurants and cafes:
- Outdoor seating is almost always pet-friendly in major US cities.
- Many cafes have specific dog-welcoming policies — some even have water bowls and treats at the door.
- Inside-seating with dogs is restricted by health codes in most states; the exceptions are service dogs.
The unwritten rule: behave like you're representing every dog parent who'll come after you. A poorly-behaved dog at one cafe creates pressure on owners to ban dogs at that cafe. A well-behaved dog reinforces the welcome.
Section 5: Anxiety mitigation — the Bed-First approach
Here's the single most important section in this guide.
Most dog travel anxiety isn't temperamental — it's environmental. The dog isn't bad at travel; the carrier or new setting feels wrong. The fix is to make the travel setup feel familiar BEFORE the trip.
We call this the Bed-First approach. It works like this:
Step 1 (one to two weeks before travel): Set out the carrier you'll use in your living room. Open it. Make it accessible. Add their favorite blanket or a soft toy.
Step 2: Don't push them into it. Let them discover it. Put a treat inside occasionally. Most dogs will start using it as a sleeping spot within 3–5 days.
Step 3: Once they're using it voluntarily as a bed, the carrier is no longer a "scary bag" — it's a familiar resting place. The transition to travel use feels normal, not alarming.
This is why we designed the Copilot to function as a luxury bed first — the structured walls and padded interior actually make a comfortable resting spot, which means the Bed-First approach works naturally without you needing a separate bed.
For dogs with severe travel anxiety, talk to your vet about additional support: anxiety vests, calming supplements (chews containing L-theanine, chamomile, or CBD designed for pets), or in some cases prescription medication for very short courses around travel days. Don't experiment with sedatives without veterinary guidance — many over-the-counter human options are genuinely dangerous for dogs.
One overlooked trick: Scent-Lock Familiarity. Pack a t-shirt or pillowcase you've slept on alongside their bedding. Your scent is the strongest anxiety-reducer for a bonded dog. We've heard from customers whose dogs sleep through 4-hour flights because their familiar t-shirt is in the carrier.
Section 6: Gear that genuinely helps
We try to keep our gear recommendations short and honest. Most travel gear marketed to pet parents is unnecessary. Here's what we think actually earns its place:
A structured carrier that works in multiple settings. Our Copilot was built specifically to solve the "I have three carriers for three situations" problem — it's a car seat, an airline carrier, and a luxury bed in one. Designed for small dogs up to 16 lbs. If you fly twice a year and drive frequently and want a bed at home, one carrier covers all three.
A spill-proof water bowl. Collapsible silicone bowls leak. Look for non-spill designs with a baffle.
Pee pads. Always, always travel with pee pads. They've saved countless trips.
A backup leash. Leashes break or get lost at the worst times. Keep a slim secondary leash in your carrier.
Familiar treats. Don't switch food or treats during travel. Pack what your dog already eats.
That's the list. Most "must-have travel kits" you'll see online are upselling.
Frequently asked questions
At what age can I start traveling with my puppy?
Generally, after their full vaccination series is complete — usually around 16 weeks. Before that, avoid public dog-frequented areas like airports and rest stops.
How do I keep my dog from getting carsick?
Don't feed within 2 hours of departure. Crack a window for fresh air. Use a structured carrier (motion is reduced when contained vs free-roaming). Vets can prescribe anti-nausea medication for severe cases.
Can I take my small dog on an international flight?
Yes, but rules vary dramatically by country. Some require months of advance preparation (rabies titers, quarantines). Start at least 6 months before international travel.
What's the longest flight my small dog can comfortably handle?
Most small dogs can handle flights up to 6–8 hours under-seat without issue if properly acclimated. Beyond that, consider breaking up the trip.
What if my dog refuses to settle in their carrier?
Go back to Bed-First. Spend more time at home with the carrier accessible as a bed. Most refusal-to-settle is the dog associating the carrier with travel stress. Breaking that association takes a few days of patient at-home conditioning.
Should I tell my dog where we're going?
Half-joking, half-serious answer: pre-trip routine matters. Dogs read your stress level. If you're rushed and anxious during packing, your dog reads "something is wrong." If you're calm and methodical, they read "this is normal." We've found that talking to our dogs through the prep ("we're going to the airport, you're going to be in your carrier, we'll be there in a few hours") doesn't hurt and might genuinely help.
Trying to pick the right breed for the travel-friendly lifestyle? Read our guide to the 10 best small dog breeds for apartment life and travel. Comparing carrier formats? Here's our honest comparison of carrier types. Ready to pick a carrier? Meet the Copilot — our convertible carrier built for the small dog who travels with you.