A sense of normalcy began to return in India and Pakistan on Monday, in a sign that the cease-fire that halted the most expansive fighting between the two nuclear-armed neighbors in decades would extend past the weekend.

Stock markets in both countries jumped on the first day of trading since the agreement was announced late on Saturday. India announced the resumption of civilian flights at over 30 airports in the north of the country. The authorities in Pakistan said that all airports in the country were open.

The situation along the two countries’ extensive boundary remained tenuous, with tens of thousands of people still displaced from their homes. But there were no reports of a major breach on Sunday night, the second evening of the cease-fire, the result of a diplomatic push from the United States.