Last updated: September 2026.
Like me, you’ve probably found that searching for the best travel car seat is one of those things that sounds simple until you actually try to do it. Finding a car seat that’s approved for the plane while they are still small enough to sit in one, light enough to carry through an airport, compatible with hire cars you don’t see until you get there, and ideally suitable for more than six months before your baby outgrows it. It’s a lot to ask of one product and in our experience, no single seat ticks every box.
We’ve been travelling with R since he was just a couple of months old (he’s now approaching 2!), and we’ve worked through the full journey from newborn infant carrier to foldable toddler seat. Here’s what we have finally settled on using, broken down by stage.
A quick note on ages: R129 car seats are based on your child’s height rather than age. I’ve included a rough age equivalent alongside some of the height limits below simply to make them easier to visualise, but children vary considerably, so always use your child’s actual height and the manufacturer’s stated limits when choosing a seat.
| Stage | Seat | Why we use it |
|---|---|---|
| Birth to ~15 months (87cm limit) | Maxi-Cosi Pebble / Pebble 360 Pro² | TÜV aircraft approved, seatbelt install, pushchair compatible |
| 15 months to ~4 years, rear-facing (hire car trips) | Graco SlimFit R129 | Rear-facing to 105cm, but bulkier and less portable |
| 15 months to 12 years, foldable (top pick) | Cosatto On the Go i-Size | Forward-facing only, but folds flat and travels much easier |
| 15 months to 12 years, budget | My Babiie MBCS80 | R129 certified, ISOFIX, £69.99, not independently crash tested |
In this guide:
Can you take a car seat on a plane?
Yes (providing it’s cabin approved), and if you’re hiring a car at your destination, bringing your own travel car seat is always the better option when it comes to cost. Hire company seats vary wildly in quality, cleanliness, and suitability for your child’s age and size. Taking your own means you know exactly what you’re getting. If you’re flying British Airways, our dedicated BA guide covers their specific rules on car seats, bassinets and luggage.
But we also had reservations about checking our car seat into the luggage hold of a plane. I’d seen how some airports chuck baggage onto baggage carousels or into trucks – was it risky putting an item that needs to be in impeccable order into that environment?
For the first 17 months, we decided to book R a seat on all UK and European flights, bringing our car seat on board. And for US trips which require different, US-approved car seats anyway, we took the hit on costs and hired when we got there.
There are two things to check before assuming your seat is good to go though:
1. The aircraft approval sticker
Your car seat needs to carry specific aircraft approval, not just a European road safety standard. For UK and EU seats, look for a TÜV sticker confirming it’s certified for use on a plane. The ECE R44/04 or R129 label covers road use but doesn’t automatically mean it’s approved for aircraft. Check the label, and take the instruction booklet with you in case airline staff ask for it at the gate.
Which? has a clear breakdown of the rules and how different airlines handle car seats – worth reading before your first flight.
2. Whether you can use your UK car seat in the US
This catches a lot of British families out, as UK and European car seats are certified to ECE R44 or R129 standards, but US hire car companies operate under a different standard (FMVSS 213) and may refuse to let you use a European-certified seat in their vehicle. It’s worth checking directly with your rental company before you travel. We’ve used BabyQuip for US trips – they deliver inspected, clean baby gear including car seats direct to your hotel or rental property, or even offer airport drop off.
Travelling in Europe is generally simpler because UN R129 is the current height-based approval standard used for child car seats. However, child-restraint laws can vary by country, including the age or height at which a seat is required, so always check the rules for your destination before travelling. If you’re buying a travel seat now, we’d choose an R129-approved model.
The best travel car seat for under 15 months: Maxi-Cosi Pebble
We used the Maxi-Cosi Pebble for R from birth, and it came on a lot of flights with us. It’s one of the most widely used infant carriers in the UK for good reason: it works with most travel system pushchairs (see our travel pram recommendations), the seatbelt install means you don’t need your ISOFIX base abroad, and several versions carry TÜV aircraft approval.
Both the Pebble and the Pebble 360 Pro² have the same height limit of 87cm, which in practice means most babies outgrow them around 15 months – exactly when R did (but he’s a little on the tall side). Maxi-Cosi quote up to 18 months for the Pro², but that’s their estimate for an average-sized baby and the 87cm limit is the hard ceiling either way.
Pebble vs Pebble 360 Pro²: which one?
The Pebble 360 Pro² is the newer version and is what we’ve used in our home car since R was born (and what we’ve always taken on the aircraft with us until recently). The headline upgrade is 360° rotation plus SlideTech, a seat that slides out towards you as it rotates, which makes getting a baby in and out much easier – although of course this doesn’t matter when travelling as you won’t have the base. It also has a full lie-flat position in all modes, which is handy, and it installs with just a seatbelt in the same way as the standard Pebble.
The CARES harness: an airplane car seat alternative for older toddlers
If your child is past the baby stage but still too small to rely on a lap belt alone, the CARES harness is worth knowing about. It stands for Child Aviation Restraint System and it’s the only FAA-approved harness-type safety device for use on planes. It’s designed for children who can sit upright independently, weigh 10-20kg (22-44lb) and are up to 40 inches tall, so roughly toddler to pre-school age. It’s FAA-certified for aircraft use, but acceptance still varies by airline, so check before you fly.
It works by looping over the back of the airplane seat and working with the existing lap belt to create a proper shoulder harness. The whole thing weighs around 250g and packs down to the size of a rolled-up t-shirt, which is the main appeal over lugging a full car seat down the aisle.
A few things to know before you buy:
- It’s FAA-certified, which covers US carriers and most international airlines, but acceptance does vary by airline
- Other parents I know have used it successfully on BA and easyJet
- KLM ask you to notify them in advance so they can add it to your booking
- It can be used in middle and aisle seats, unlike car seats which must go by the window
- It is not for use in cars at all
It’s not cheap, but it’s worth it for a wriggly child who needs to sit still for takeoff and landing, and significantly less hassle than travelling with a car seat if you don’t need one at your destination. Just make sure you’re buying from a reputable source as there are counterfeits around that haven’t been properly tested.
If you’re packing for your first trip with a baby, our baby holiday packing list covers everything from carry-on essentials to hold luggage, our guide to flying with a baby shares the tips we’ve learned from doing it many times over, and our age-by-age travel toys guide covers what actually keeps them entertained once the car seat is installed.
The best travel car seat for a 1 or 2 year old (15 months and beyond)
Once your baby outgrows the infant carrier stage, finding the right travel car seat gets trickier. Full-size toddler seats are heavy and bulky, and most require heavy bases. The ultra slick travel ones are front-facing and can feel a little questionable for a young toddler.
After much research, this is what we use:
Jump to the right seat for you:
For hire car trips: the Graco SlimFit R129
For trips where we have a hire car for the week, we use the Graco SlimFit R129. It’s a 2-in-1 convertible that stays rear-facing from birth up to 105cm (around four years), then converts to a forward-facing highback booster all the way to 145cm (around 12 years). For travel purposes, the key selling points are that it installs with the car’s seatbelt which means no ISOFIX is needed and it works in any hire car. I love that it can stay rear-facing right up to its 105cm limit (around age 4 for an average-height child), rather than forcing you to turn them forward-facing as soon as they pass 15 months. The longevity is also really useful, as this seat will cover R for years, not just one holiday stage.
The trade-off with any seatbelt-installed seat in a hire car is that you lose the rotating base you might have at home. The trade-off is convenience rather than portability: you need to install it carefully using the vehicle seatbelt each time, following Graco’s instructions.
We book hire cars through Auto Europe for European trips. It’s also worth sorting your car hire excess cover before you go, as the excess on a rental can run to thousands if the car is damaged, and there’s a vehicle value cap that catches you out if you hire larger SUVs like we do. We’ve compared the top UK excess providers if you want to see which one covers your car properly. Just don’t count on the rental company’s own seat being up to scratch, take your own wherever you can.
The best foldable travel car seat: the Cosatto On the Go i-Size
For trips where we need something that folds down for transfers or a hire car but still want a proper connection to the car, our pick is the Cosatto On the Go i-Size. It folds into its own carry bag and covers 15 months all the way to 12 years, and it installs with ISOFIX plus a top tether in harness mode up to 105cm rather than relying on the seatbelt alone. That makes it less universally portable than the Nomad Plus, but I prefer the ISOFIX and top-tether set-up if we’re going to have the same hire car for a week rather than using the seat for the odd transfer.
It’s heavier than the Maxi-Cosi Nomad Plus² at 5.7kg versus 4.26kg, which matters when you’re hauling it through departures, but it feels much more substantial when you compare them side by side. Like the rest of this category it’s forward-facing only. If you want a foldable travel seat with a longer age range and proper ISOFIX security, this is our top recommendation, and it’s worth weighing up against the Nomad XL too if you want ISOFIX from the start.
A lighter alternative: the Maxi-Cosi Nomad Plus²
If you want something even lighter for airport transfers or the odd taxi, the Maxi-Cosi Nomad Plus² is worth a look too. It weighs 4.26kg, folds completely flat into its own carry bag, and installs with the car’s seatbelt in around 30 seconds. It fits any car, which is exactly what you need when you don’t know what the driver is going to turn up in.
It’s designed for 15 months to four years, and when folded it’s barely bigger than a large handbag – for a 20-minute airport transfer it’s pretty ingenious.
The trade-off is it’s forward-facing only. I’m not entirely comfortable with it for daily drives or a road trip holiday given R is only 21 months, so we keep it for short hops – but plenty of parents rave about it. There’s also an older Maxi-Cosi Nomad Plus still around, which is essentially the same seat, same weight, same install, same price, so if you spot the original going cheaper it’s worth grabbing over the Plus².
What about the Nomad XL Plus?
The Maxi-Cosi Nomad XL Plus is a step up in longevity and installation options. Here’s what’s different from the Plus:
- Age range: 15 months to 12 years
- Installation: ISOFIX and top tether in harness mode, then seatbelt in booster mode
- Weight: 6.2kg
- Converts to a booster: yes, at 100cm height
The XL makes more sense if you want one seat that covers the toddler years and beyond, or if your car has ISOFIX and you want to use it. For pure travel portability, the Plus is lighter and more compact.
If you want a second opinion before buying, the Car Seat Safety UK Facebook group is worth joining – it has nearly 100k members and a range of experts who answer questions and check installations via photos.
A budget pick: My Babiie MBCS80
Everything above sits in the premium bracket, so if you don’t want to spend above £100 on a seat you’ll only use for a handful of trips, the My Babiie MBCS80 comes in at £69.99 and is worth a look. It’s a foldable toddler to booster seat, R129 certified and ISOFIX compatible, aimed at families who want occasional travel cover without the higher price tag of the Nomad range. ISOFIX connects the seat directly to compatible anchor points in the car rather than relying solely on routing the vehicle seatbelt. I find that reassuring in a hire car because the installation is more straightforward, although either system still needs to be fitted exactly according to the seat manufacturer’s instructions.
We haven’t tried this one ourselves, but it’s R129 certified, which means it meets the legal safety standard, though it hasn’t been through independent testing like ADAC, unlike most of the seats above. That’s not unusual for budget seats, but it’s a fair trade-off against the price saving. Check the age and height range against where your child actually is now too, as budget seats often have a narrower usable window than the higher-end options.
What we use at home: the Maxi-Cosi Pearl Pro²
For day-to-day use now we’ve outgrown our Pearl, the Maxi-Cosi Pearl Pro² is great and a seat we love. It runs from around 6 months up to 4 years (67–105cm), stays rear-facing throughout, and sits onto the rotating ISOFIX base.
But since the Pearl is ISOFIX-only, it stays at home – there’s no seatbelt install option, so it’s not the right call for hire cars or taxis abroad.
The best car seat travel bag for holidays
This felt like a minor detail until we had to stop putting the car seat on top of our pram and check it alongside a cot, several suitcases and carry it with a toddler in one arm and our on-board bag in another.
We use this backpack-style car seat travel bag and it was £80 very well spent. It has protected the seat in the hold well so far (important given a car seat that takes a heavy drop should technically be replaced even with no visible damage), and the padded backpack straps mean you can carry it hands-free through security. It’s solid and well-made, not flimsy – although I’d still suggest putting some clothing around the car seat for extra precautions. I’ve added it to my baby travel packing list as a must-buy if you’re putting the car seat in the hold.
Allie, Jack & R x
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Frequently asked questions about travel car seats
