Then you must be skipping chapters =/
Take this latest dungeon for example. In episode 20 they go from departing to the dungeon from Sindria to being in the dungeon by the end of the episode. They completely bypassed meeting up with Alibaba's brothers, the village chieftain, bumping into the 3 villains a 2nd time after arriving at the island, and the little girl not only accompanying them to the dungeon but asking once again to be taken with them inside to save her parents.
On top of that, the curse magic cast on Sinbad and Alibaba was presented before the Zagan dungeon in the anime, where as it happens after in the manga. Aladdin and crew were sent to the dungeon to capture it as a training mission and to "work for Sinbad" (his own words). Zagan having a cure was something the anime added.
Take Alibaba's broken sword back in Sindaria as another example. In the anime when he got his new dagger Amon transferred over immediately. In the manga, Alibaba had to bond with his new dagger through training and only after that does Amon transfer. And when Aladdin is learning about magic and how to be invisible in particular, Alibaba is not present during the lesson in the anime whereas he is in the manga. The manga also has a scene dedicated to teaching Aladdin about magic that was completely left out of the anime as well.
In fact, go to
here and click on every episode. At the bottom they list all the differences between the manga and the anime. Some are slight, and some are quite big. Some episodes are spot on like you said, and some tend to deviate in quite a few areas. Most of it doesn't really happen until just as the Balbadd arc is ending.
Edit: You done gone made me put in the effort I was too lazy to do earlier, lol