The Weekend-Away Budget That Includes Monday Morning
A two-night trip can fit the travel budget and still knock the following week sideways. The hotel and tickets were paid months ago, so the ride to the airport, kennel, highway lunch, and Monday takeout arrive looking like unrelated little problems. They all belong to the same weekend.
I would budget a short trip from the moment the front door closes until ordinary home life is running again. That catches the spending that travel sites leave out: getting to the station, feeding people in transit, asking someone to watch the dog, replacing food that spoiled, and buying convenience on the first exhausted evening home.
The numbers below are made up so the arithmetic is easy to follow. Your trip may need flights, fuel, tolls, transit, child care, accessibility help, medicine storage, or none of those. Start with the actual shape of the weekend rather than a generic travel allowance.
Write the departure day at the top of a page and the first normal day after returning at the bottom. Walk through the hours in between. Where will everyone eat? Who handles the pets, plants, mail, or care duties? How does each traveler get to the departure point and back home? What must be ready for work or school the next morning?