Tote bag recs?

I am searching for a tote bag/larger bag that I can use for traveling (especially while flying) and that can be tossed into the overhead bins without stuff falling out of it. I am not a person that flies with a carry on suitcase but with one bigger bag that needs to fit everything (currently using a rucksack but searching for a more stylish alternative).

So far i found beautiful tote bags but all of them were open/just had a clasp to close

What I need:

• tote/larger bag that can be carried comfortably
• secure closure (not holes/open at the top)
• leather if possible (canvas will probably get dirty faster?)
• timeless design
• price point under 3k but there is no minimum. If I find a bag that’s fulfilling all the needs for a couple hundred euros that’s also fine

Any recommendations? What bags do you use for travel?