best low cost large travel backpack ASXMA 40L.Flight Friendly Approved Carry-on Luggage,Anti theft.Water.resistant.Lightweight.Business.Rucksack,Durable Weekender Bag Daypack Fits 17.3 Inch Laptop Unisex : Electronics hike-trail a front compartment with Timbuk2 Parkside Laptop Backpack Choose Option:Seat Bag Black SM

best low cost large travel backpack ASXMA 40L.Flight Friendly Approved Carry-on Luggage,Anti theft.Water.resistant.Lightweight.Business.Rucksack,Durable Weekender Bag Daypack Fits 17.3 Inch Laptop Unisex : Electronics hike-trail a front compartment with Timbuk2 Parkside Laptop Backpack Choose Option:Seat Bag Black SM

Timbuk2 Parkside Laptop Backpack 2.0 (Embroidered)

What to Look for in Premium Nylon Construction Three details separate a premium nylon piece from the broader market

hike-trail

Choose Option:Seat Bag Black SM

I am guessing a 11″ MacBook Air should be able to fit in the padded iPad compartment.

a front compartment with many pockets to keep your belongings organized.