From the stress the night before, to boarding as a full-contact sport, to the aisle seat that became my non-negotiable, all the way to the infamous ear pressure: here’s everything.

Before Lily, traveling was simple. A suitcase packed calmly the night before, headphones in, off I went. I was so relaxed I sometimes missed my flight (yes, really).

With a baby, nothing is the same. The packing, the boarding, the flight itself, the calm moments and the intense ones, every step can become a new thing to figure out. But here’s the good news: it’s all learnable. Over time you pick up the right instincts, the right hacks, the right seats, the right airlines.

I wrote this guide for the version of me who took off on her first flight with a 7-month-old and would have loved someone to tell her all of this beforehand.

📋 In this article ▼

• The night before departure
• The rules at a glance
• My complete packing checklist
• Airport and security with a baby
• Baby liquids at security
• Boarding with a baby
• During the flight
• Ear pressure: a real fear, not a certainty
• Which airlines are best for flying with a baby?
• Flying long-haul with a baby
• Flying solo with a baby
• Flying with a newborn
• Tips by baby’s age
• The ultimate advice
• FAQ

The night before departure: yes, there’s stress, but you learn to manage it fast

Here’s what genuinely surprised me the first time I flew with Lily: I didn’t sleep the night before. Before her, I always slept fine the night before a flight, I never once felt anxious about travel. That first flight with a baby was a different story entirely.

Good news: it gets better with experience. I sleep a bit better the night before now. Not perfectly calm, but I sleep.

I still ask myself the same questions and picture everything that could go wrong: what if there’s a delay? What if she has a huge meltdown? What if we lose the pacifier? What if she gets a fever?…and I mentally run through the cabin bag checklist and where everything is packed.

Because the cabin bag is my real pressure point. What goes in checked luggage, fine, that’s normal planning. But what you carry on board is what you’ll be using for 8-10 hours straight with a baby. Forget one thing (the pacifier, the milk pouch, the wipes) and the whole flight can tip sideways.

The tricky part: with a baby, you’re using certain items right up until the last minute. You can’t pack everything the night before. The pacifier, the comfort toy, the last-minute diaper change, the morning bottle, all of that stays out until 30 minutes before you leave.

It’s normal to stress. And it’s temporary. Here’s what experience has taught me:

• Most of the “what ifs” never happen. You picture the worst-case scenario, and 95% of the time, none of it plays out.
• When something unexpected does happen, you always find a solution. Missing a diaper? You buy some at the airport. Baby refuses the bottle? You wait 30 minutes. It all gets managed somehow.
• You come out of every trip with new confidence. And as you rack up departures, you stress less because you know you’ll handle it.

Flying With A Baby: The Rules At A Glance

Topic	What to know
Minimum age	Most airlines accept babies from 7-14 days old, though many parents (and paediatricians) prefer to wait until 6-8 weeks, especially before a long-haul flight.
Liquids	Water, formula and baby food travel in unlimited quantities in the cabin, as long as you declare them and show them separately at security.
Bassinet weight limit	Usually around 10-11kg depending on the airline. Never 100% guaranteed, so always have a carrier as backup.
Documents if flying solo (UK)	Worth carrying a signed consent letter from the other parent, alongside your baby’s own ID document. Full guidance on gov.uk.
Fares	Babies under 2 usually fly as a lap infant for a reduced fee (often around 10% of the adult fare), not completely free.

My complete packing checklist for flying with a baby

It took me a while to build this, but here’s my real checklist: the one that runs through my head before every flight, and that I finally wrote down to travel with more peace of mind. To avoid stress once I’m there, I always organize everything by category. The more everything is sorted and anticipated, the easier it is to handle the unexpected and the small meltdown moments along the way.

Airport and security with a baby

Security is usually the part that worries first-time flying parents the most, and honestly, it’s simpler than it looks once you know what to expect.

Baby liquids at security: unlimited, but declared

Here’s something many parents don’t know before their first flight: water, formula, and baby food are allowed in unlimited quantities in the cabin when traveling with your baby.

But there are rules to follow:

• Take them out of your bag at the checkpoint, don’t leave them tucked inside
• Declare them to the officer (“I have liquids for my baby”)
• Sometimes they’ll ask you to open them, or occasionally taste one, though I’ve personally never had that happen

What About Baby Formula, Specifically?

Pre-measured formula sachets are the easiest way to travel: no guessing scoops mid-flight, just tip and shake. Security will sometimes ask you to open one to check it, and occasionally to taste a small amount, though that’s not something I’ve personally had happen every time.

If your baby needs a warm bottle mid-flight, most cabin crew are happy to warm one for you using hot water, just ask early rather than mid-meltdown when the trolley is three rows away.

Boarding with a baby: the “workout” moment of the trip

This is the moment I dread most, and paradoxically, it’s the one that almost always goes fine.

Picture the scene: at the gate, in line, baby in the carrier, the folded stroller on one arm, the diaper bag on the other, my handbag across my body, and three narrow steps to climb up the jet bridge.

Workout. That’s the word for it.

People genuinely help, especially if you’re alone

Here’s something I’ve noticed after a lot of flights: when I’m traveling solo with a baby, people offer help spontaneously. When I have someone with me, they offer much less. It’s as if they instinctively see you’re managing alone and switch into “solidarity” mode.

So I’ve learned to accept without hesitating. And even to ask. The mom who says “Excuse me, could you hold my bag for a minute?” always gets a smiling yes. Don’t hold back.

Priority boarding: not always automatic

Depending on the airline, priority boarding with a baby is more or less automatic. A few things I’ve experienced firsthand:

• Swiss: yes, automatic. A warm welcome at the counter.
• TAP Portugal: yes, automatic too. Very family-friendly.
• Norwegian: not offered spontaneously. You have to ask explicitly.

First or last: it depends on your situation

A common idea floating around: “the earlier you board, the longer you’re stuck in a confined space and the more restless baby gets.” That’s true in some situations.

But personally, when I travel solo with Lily, I prefer boarding first. I don’t have to juggle the stroller and the baby in the queue outside, I settle in calmly inside, I have space to organize my things, and I can even change her on a comfortable seat before other passengers arrive.

→ My solution: think about YOUR situation before deciding. If baby can wait calmly outside and you don’t have too much gear, board last. If you’re carrying a lot or traveling solo, board first, those 10 minutes of calm are worth their weight in gold.

The aisle seat: my real non-negotiable

If I had to optimize ONE thing when booking a flight with a baby, it’s the aisle seat. Always. No exceptions. Here’s why:

• I go to the bathroom about 3 times more often than before
• I need to change baby in the cabin at least once per flight
• Baby wants to move, play, stand, not stay on my lap for two hours straight
• When there’s turbulence and you have to stay seated with baby on you, being able to move between calm stretches helps enormously

During the flight: yes, there’s stress, but it’s almost always better than in your head

During a flight with a baby, there are three kinds of moments that blend together. And the real surprise is their proportion.

The genuinely tricky moments (and how I handle them)

Seriously, that mantra works. In the middle of a meltdown on a Paris to Lisbon flight, I whispered it to myself for 10 minutes straight. Five minutes later, Lily was asleep on my shoulder.

Ear pressure: a real fear, not a certainty

During takeoff and landing, air pressure changes suddenly, and babies don’t yet have the reflex to equalize it on their own. The result can be pain, crying, an unhappy flight.

But here’s the good news: not every baby reacts the same way. Some babies are simply more tolerant of pressure changes than others.

🤧 The real risk factor: congestion

If your baby has a stuffy nose, a cold, or lingering mucus, that’s when it can really hurt. Mucus blocks air from moving through the Eustachian tubes, which are already narrow in babies. That’s the real problem, more than the pressure change itself.

🍼 What you can do either way (prevention by age)

Even if your baby has never shown signs of pain, it’s better to prepare for takeoff and landing. Swallowing helps balance pressure naturally:

This is prevention, not a guarantee. If your baby refuses to drink at takeoff, don’t stress, there’s a good chance it’ll be fine anyway.

Which airlines are best for flying with a baby?

Not all airlines are equal. Here’s my ranking after a few years and 7 countries of experience.

🗓️ Picking a quieter flight: timing matters

Instead of paying extra to reserve seats, my real trick is choosing flights that are less in demand:

Nothing is guaranteed, luck plays a role too. But on quieter flights, your odds of having empty seats next to you go up significantly. And when that happens, baby can stretch out and you can actually breathe.

🛏️ The bassinet: reserve it as soon as you book

On a medium or long-haul flight, request a bassinet (the wall-mounted cabin crib) as soon as you buy your ticket. Weight limit: around 10-11 kg depending on the airline.

Important: the bassinet is never 100% guaranteed. The airline can reassign it if the aircraft changes. Always have a backup plan: a baby carrier or a wrap.

Flying Long-Haul With a Baby: What Actually Changes

A short hop and a long-haul flight with a baby are genuinely two different experiences, and it took me a couple of trips to understand why. On a longer flight, the bassinet stops being a nice-to-have and becomes something worth fighting for: request it the moment you book, not at check-in, and reconfirm it a few days before you fly.

The other thing that changes is how much an empty seat next to you matters. On a round trip from Geneva to Brazil with my mum and Lily, we had our full row of 3 to ourselves both ways, flying in March. Pure happiness on a flight that long. On a much shorter Geneva to Norway route, we ended up on two completely full flights instead, both ways, and I never figured out why. It happens. Off-peak timing improves your odds, but it’s not an exact science.

If your flight is overnight, that can actually work in your favour: baby’s own sleep rhythm does a lot of the work for you, whereas a long daytime flight means more hours to fill with snacks, toys and patience.

Flying solo with a baby: what actually changes

Flying solo with a baby is a different dimension entirely. Not for the reasons you’d expect (the flight itself usually goes fine), but for everything that happens around it.

Physically, it’s more demanding. Logistically, it’s denser. Emotionally, it’s more intense, there’s no one else to take over when you’re at your limit.

What I’ve learned to do

Flying With A Newborn: What’s Actually Different

A newborn’s first flight isn’t just a smaller version of flying with an older baby, it comes with its own set of questions, mostly about timing rather than logistics.

Tips by baby’s age

Every stage brings its own version of easy, and its own version of hard.

FAQ: Flying With a Baby

What age can a baby first fly?

Officially, from 2 to 7 days old depending on the airline. Medically, it’s recommended to wait at least 6 weeks, especially for long-haul flights.

Does a baby fly for free?

On most airlines, yes, up to age 2, but on your lap (not their own seat). You’ll often pay a small fee (10-15% of the adult fare).

Does my baby need a passport?

Yes, from birth for international travel. A baby passport is typically valid for 5 years.

How do I relieve my baby’s ears on a plane?

Give them something to drink (bottle, nursing, or a fruit pouch) right at takeoff and landing. Swallowing helps balance the pressure.

Does the stroller fly for free?

On nearly all airlines, yes. You can keep using it right up to the boarding gate.

Which seat should I choose with a baby?

The aisle seat is non-negotiable. On long flights, request a bassinet (wall seats) as soon as you book.

Can I bring milk and water in the cabin for my baby?

Yes, in unlimited quantities, as long as you declare the liquids at the security checkpoint.

What are the best tips for flying with a baby?

Book an aisle seat, feed your baby at takeoff and landing to ease ear pressure, request the bassinet as soon as you book, and pack a separate pouch for liquids. See the quick tips box above for the full list.

How do I travel with a baby on a plane, step by step?

Pack liquids separately for security, remove baby from the carrier at the scanner, board with priority if you can, feed at takeoff and landing, and keep your carrier as a backup in case the bassinet isn’t available. Full breakdown in the sections above.

How do I travel abroad with a baby?

Your baby needs their own passport from birth for international travel, and if you’re flying solo, it’s worth carrying a signed consent letter from the other parent. See our full guide on baby passports for details.