Georgette Lang had planned three international trips this year to celebrate her 60th birthday and her daughter’s college graduation, but in the weeks since the United States attacked Iran on Feb. 28, she postponed all three, resulting in a loss of nearly $16,000. It didn’t feel “safe or appropriate to be gallivanting around the world as an American after the government started a war,” said Lang, 59, an interior designer from Philadelphia. She had planned to visit Italy, Switzerland, France and Japan over the summer and fall. “It’s a gut-wrenching punch financially, but I didn’t choose flexible booking options because I was sure we would go,” she said. Instead, Lang plans to stay close to her home over the summer and celebrate her birthday with family in Cape May, New Jersey. “It feels like the pandemic all over again, when you have a big urge to travel, but you know in your gut that the right thing to do is to stay put,” she said.…