wǒ yào zhíjī
I need to check in for a flight
这个可以带上飞机吗?
Can this be taken on a plane?
这个 (zhège) means 'this', 可以 (kěyǐ) means 'can' or 'may', 带 (dài) means 'to bring', 上 (shàng) means 'onto', 飞机 (fēijī) means 'airplane', and 吗 (ma) makes it a question. So it's 'Can this be brought onto an airplane?'
我可以带这个上飞机吗?
wǒ kěyǐ dài zhège shàng fēijī ma?
Can I bring this onto the plane? — More personal and polite.
这个能带上飞机吗?
zhège néng dài shàng fēijī ma?
Can this be brought onto the plane? — Slightly less formal.
这个可以带上飞机吗?
zhège kěyǐ dài shàng fēijī ma?
Can this be taken on a plane?
可以的,没问题。
kěyǐ de, méi wèntí.
Yes, you can. No problem.
Appropriate
Avoid when
You say "这个可以带上飞机吗?" (zhège kěyǐ dài shàng fēijī ma?).
It is pronounced "zhège kěyǐ dài shàng fēijī ma?" with the question intonation rising at the end.
Use it at the airport when you need to ask if a specific item is allowed in your carry-on baggage.
Tomyo
Remember 这个可以带上飞机吗? and hundreds of other phrases with smart reviews, audio and examples.