The Battle of Crysler's Farm marked a decisive British and Canadian victory over a larger American force, prompting the Americans to abandon their St. Lawrence Campaign, which aimed to capture Montreal. The American campaign was beset with difficulties, including inadequate supplies, mistrust among officers, and unfavorable weather conditions. The British, led by Lieutenant Colonel Joseph Wanton Morrison, effectively countered the American advance.

The battle itself unfolded in challenging conditions, with cold rain and confusion among both sides. American Brigadier General Boyd, who assumed command, ordered an assault in the afternoon. The American attack was met with determined resistance from British and Canadian forces, leading to disarray among the American troops. Ultimately, most of the American army retreated in confusion to their boats and crossed the river to the American side. Casualties on both sides were significant, with the British suffering 31 killed and 148 wounded, while the Americans reported 102 killed and 237 wounded. The battle's outcome marked the end of the American threat to Montreal and had significant consequences for the war in the region.