This backpack is very similar to the one that I use. I bought my backpack quite a few years ago so the actual brand (MEC) and model are no longer available. I highly recommend using a backpacking pack if you are planning to carry your bag onto the plane. 

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This bag is large enough to fit everything you need and it will comfortably fit in the overhead compartments. Look for a backpack between 45L - 55L, any larger and you risk the airline forcing you to check your bag last minute. I have seen other's with far larger bags than mine so likely you would only have an issue if the flight is full.

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A backpacking pack will offer support for your back which is why it is a popular choice for travelers. They are also weighted nicely making them easy to carry around. 

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Also, you don't have to spend a fortune however, I do recommend that you research the bag you have selected. I spent approximately 150$ on mine and it has lasted for 6 years and has been with me to 13 different countries. I should also mention that mine doubles as my hiking day bag so it has seen lots of use.

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I bought mine from MEC (Canada).

 

If you are in the states, then I recommend you check out REI Co-Op.