The answer to this question is YES!
Most airlines allow passengers to bring pushchairs as checked baggage, gate-checked items, or in some cases, take them on board with them if they respect the allowed dimensions.
If you plan to check the pushchair as baggage, you should make sure it is properly packed and labelled with your name and contact information. You may also want to consider purchasing a protective cover to prevent damage during handling. This will also keep it from getting dirty. Some pushchairs come with this as standard, but for others, you will need to buy it as an additional purchase.
If you plan to bring the pushchair with you to the gate, you will need to check with your airline about their specific policies and procedures. Some airlines require pushchairs to be checked at the gate, while others allow them to be carried on board and stored in the overhead compartments or lockers. It will depend on the size of your pushchair, and how busy the plane is. Do not assume that just because you have a small-folding pushchair that meets the requirements, they will allow you to take it on board once you get to the gate!
Overall, it is usually possible to take a pushchair on a plane, but it's important to check with your airline beforehand and follow their guidelines to ensure a smooth and hassle-free travel experience.