My first international flight – Is a nested round trip using Norse Airways and Flyr a bad idea? And is 3 hours enough time to go to my next flight?

Planning on going to Italy this August and a direct flight is a bit over my budget, but I saw on Kayak I can take a flight from JFK to OSLO using Norse, and then OSLO to Venice using a newer airline Flyr and it would be about $700 less.

So it would be:

11:55 PM on the **3rd of August** JFK -> 1:30 PM **4th of August** Oslo

Then 4:50 PM **4th of August** Oslo to -> 7PM **4th of August** Venice.

I’d have a bit under 3 hours to go back through customs, is this enough time?

And then on the **21st of August** return Noon from Venice to 2:40 in Oslo, wait in airport a bit then 7:50 PM to 10:00PM JFK.

My first international flight – Is a nested round trip using Norse Airways and Flyr a bad idea? And is 3 hours enough time to go to my next flight?