At the end of the season, the HAC played two rounds of play-offs, during which they defeated Amien SC (women) (1–0, 4–0) then Nice (2–2, 1–0) to secure promotion into Division 2 for the first time.

Le Havre then turned to the British market, signing Martha Thomas (British-American), Courtney Brosnan (Irish-American), Lois Heuchan (Scottish), Ellie Leek and Rhian Cleverly (both Welsh).

Due in part to several injuries sustained during preparations, Le Havre began its championship in indifferent form with two wins, three draws and three defeats after eight days.

[7] As a result Le Havre finished at the top of its group and was promoted to Division 1 at the expense of the Stéphanoises, who led until the last match day but saw their final game postponed.

[11] The team was bolstered by several French players who signed for two years: Lina Boussaha, from PSG, Élise Legrout who was at college in the United States, right-back Santana Sarhaoui (US Orléans) and goalkeeper Olesya Arsenieva.

Several foreign internationals also signed: Cameroonian Luce Ndolo Ewelé,[12] Chilean Francisca Lara, Russian Ekaterina Tyryshkina and Icelandic Berglind Björg Þorvaldsdóttir.

Le Havre also rounded out a busy transfer window by signing its ninth and 10th recruits: Turkey's Melike Pekel and the Icelandic Anna Björk Kristjánsdóttir.

[15] A disappointing 2020–21 Division 1 Féminine campaign saw Le Havre win only two matches and finish at the foot of the 12-team table, resulting in their relegation back to D2 after a single season at France's top level.