If it's a 14" MacBook Pro, then it's faster, has a better screen, better speakers, etc. Worth the money.
If it's a 13" MacBook Pro, then it's exactly the same as the MacBook Air but with a larger battery and a fan. Don't buy that one - for almost everyone it's a worse computer. The thinner/lighter/cheaper MacBook Air is just as fast. The fan on the MacBook Pro will almost never actually turn on anyway so that's not a useful feature.
The larger battery is the only actual upgrade. But the MacBook Air battery probably already lasts longer than you need (as in multiple days) and the MacBook Pro is even longer than you need. To the point where it's not really an upgrade at all it's a detriment - makes the computer heavier than it needs to be and takes up more space in your backpack.
Does it have 8GB of RAM, or 16GB of RAM? You should get 16GB if you can afford it. Both of the computers you listed are sold with either 8GB or 16GB.