Widnes trailed 12-4 until just before half-time but hit back with two tries apiece from man-of-the-match Paddy Flynn and Cameron Phelps.
Chris Dean, Franke Winterstein and Gareth Hock also went over for Widnes with Joe Westerman, Ben Galea and Tom Lineham replying for Hull.
- Sports & Recreation
- Cameron Phelps
- Joe Westerman