Major travel sites don't show discount and regional airlines. So, if you want the full story, make sure to visit AirNinja before you fly every time. Bookmark it now!

World's Longest Rivers

Note: It seems there is much debate about what constitutes a river, and which rivers are actually longest. This is not a definitive guide.

1. Nile River, Africa - 4180 Miles (6695 km)

Generally considered to be the longest river in the world. The White Nile and Blue Nile join in Sudan and flow north towards Egypt.

2. Amazon, South America - 4000 miles (6400 km)

By far the largest volume of any river in the world, The Amazon River starts in Peru and runs through the jungles of Brazil. Recent research suggests that the Amazon may actually be longer than the Nile.

3. Yangtze River, China - 3915 miles(6300 km)

4. Yellow River, China - 3395 miles (4845 km)

5. Parana River, Brazil and Argentina - 3032 miles (4880 km)

6. Congo, Africa - 2900 miles (4667 km)

Others

9. Mekong River, Southeast Asia - 2500 (4023 km)

14. Mississippi, United States - 2320 miles (3734 km)

The longest river in the United States. If taken together with the Missouri river, it's actual length is 3,896 miles, making it the world's 4th longest.