For me, as somebody that learned English mostly reading, to know how to spell a word is easy but I never know if I am saying it "properly" (whatever it means in this crazy language).
I think the opposite is true for the native speakers: they started learning to speak and then they have to learn how to spell.
I used to joke that learning English is like learning Japanese; you have to learn two languages, oral and written.
As mentioned in other comments, Spanish and German, for instance, are consistent. You know exactly (mostly) how to write a word even if the first time you heard it and you know how to say an unknown word that you see in writing.
* B and V sounds exactly the same.
* ll + vowel and Y + vowel sound he same.
* Y can work as the vowel I.
* C, K, Q and Z share and overlap pronunciation:
+ CA, CO, CU = KA, KO, KU
+ CE, CI = ZE ZI (these later two are not valid combinations)
+ QUE, QUI = KE KI. (All other Q combinations are not valid).
* H is always mute!, except for ch + vowel which always sounds like in chocolate.
* G and J:
+ Strong: JA JE JI JO JU, GE, GI.
+ Soft: GA, GUE, GUI, GO, GU. This makes the sounds GU followed by "E" or "I" need a special writing: GÜE
+ Ñ: no comments.
Blessing and damnation: the stressed syllable is always encoded in the word.Bonus point: the word "sal+le", imperative of go and indirect subject of the action is the third person, can not be written as it would be said, as the two consecutive L wold become the sound of Y.
Italian is another rather straightforward example but there are a little bit more variety especially for c and g. And for some reason h as a first letter is usually dropped off.