There were a number of 5 teams played against each other under the North Zone in the Ranji Trophy, 1979-80 and the teams included the likes of Delhi, Jammu & Kashmir, Punjab, Haryana and Services. The teams were the regular participants in the tournament and all of them were representing the Northern region of India in the tournament. With a view to claim the top spot in the zone and also to secure a birth in the knock out level of the tournament, the teams fought with each other very hard in the zonal level. However, only the teams like Delhi and Haryana became successful to do so from the North Zone and they competed against the top teams of the other zones in the knock out level for the championship title.

The match between the teams of Punjab and Jammu & Kashmir was the first of the North Zone league matches in the Ranji Trophy, 1979-80 and the match took place at Amritsar from 01-03 November, 1979. The Punjab team won the match quite comprehensively with a very good margin of an innings and 124 runs and earned 8 valuable points from it, as well. The second match of the zone involved the teams like Jammu & Kashmir and Haryana and the two teams played the match at Bhiwani from 05-07 November, 1979. The winner of the match was the Haryana team with a huge margin of an innings and 190 runs and the team also earned the entire 9 points from the match. The next match of the zone saw a clash between the teams of Delhi and Jammu & Kashmir. The match that was held at Delhi from 09-11 November, 1979 saw the Delhi team winning by a very good margin of an innings and 100 runs and also earning the full 9 points from it.

The Jammu & Kashmir team appeared in the next match of the North Zone also and this time, it played against the Services team at Delhi from 13-14 November, 1979. The match was won by the Services team with a huge margin of an innings and 71 runs and the team also earned 8 valuable points from the match. The clash between the teams of Delhi and Punjab took place in the fifth of the North Zone league matches in the Ranji Trophy, 1979-80 and the match was held at Patiala from 13-15 November, 1979. The drawn match saw the Delhi team earning 5 points and Punjab earning 3 points from it. The Delhi team then played against the Services team in the next match of the zone at Delhi from 11-13 December, 1979. The Delhi team showed a very good performance in the match and clinched a victory of an innings and 32 runs for earning the entire 9 points from the match.

There was a clash between the teams of Punjab and Haryana in the seventh of the North Zone league matches in the Ranji Trophy, 1979-80 and the two teams played the match at Chandigarh from 11-13 December, 1979. The match remained drawn during the specified period of time and it saw the Haryana and Punjab teams earning 5 and 3 points, respectively from it. The Haryana team then played against the Services team in the next match at Rohtak from 15-17 December, 1979 and the match also remained drawn during the stipulated period of time. The match officials awarded the Haryana and Services teams 5 and 3 points, respectively for the drawn match. The match between the teams of Delhi and Haryana was the next match of the zone and it was played at Delhi from 27-29 December, 1979. Playing very well in the match, the Delhi team clinched a victory of 8 wickets and earning 8 valuable points. The last of the North Zone league matches in the Ranji Trophy, 1979-80 saw a battle between the teams of Punjab and Services at Chandigarh from 27-29 December, 1979. The drawn match saw the Services team earning 5 points and Punjab earning 3 points from it.