No, not all the bags can be carried onto the plane. Before purchasing your Osprey backpack, check the features of the bag. Research the dimensions and added features.
Some of the bags fit best in the above compartments while others are perfect to tuck under the seat. Check for stowaway features on the bag and handle placement is also an important factor for the versatility and convenience while going through customs and checkpoints.
Once you have all the dimensions and features of the bag, it will be important to check with your airlines before making the final decision. It doesn’t only depend on the airline you travel with, but the country you are planning to visit might have their own restrictions as well.