How to plan a family vacation, step by step

Write down everyone who is coming and what each of them needs from the trip: the youngest child's sleep and snack rhythm, a teenager's need for some independence, a grandparent's limit on stairs and walking. The destination follows from those answers, not the other way round. A beach town with no shade is a different trip for a toddler than for a ten-year-old, and a walking city is a different trip with a stroller than without one.

Ask each person for one thing they want and one thing they would rather avoid. Two lines each is enough, and it is the cheapest way to avoid the version of the trip where one person quietly endures a week.

School calendars and work leave usually decide the dates, and they decide the price too: school-holiday weeks are the most expensive and the most crowded. If you have any flexibility, look at the week either side of a holiday, or at shoulder season, when the weather is often as good and the places are quieter.

Agree a budget range with the other adults before you fall for a place. Include the costs families forget: getting to the airport, a car seat or stroller rental, checked bags for several people, meals out for a group that cannot wait, and one or two paid activities. A budget that is only flights and lodging is not a budget.

The best family destinations share two things: a short gap between "we are here" and "we are doing something", and plenty that works for several ages at once. Beaches, national parks, compact cities with parks and playgrounds, and places with reliable public transport tend to work. A destination that needs a long drive between every sight tends not to, unless the drive is the trip.

Look at what the place asks of you, not only what it offers. Altitude, heat, long hikes and sights with a minimum age change who can do what. The destination guides linked below say what to expect and what to book ahead.

Plan the getting-there as a day with its own plan. Early flights are cheap in effort for adults and hard on children; late arrivals push everyone into bed on the wrong side of a meal. Look at the whole journey, door to door, including the transfer at the other end, and ask what the day looks like for the person who handles it worst.

Where you can, choose the direct option and the sensible hour over the cheapest. Carry a small kit in your hand luggage: snacks, water, a change of clothes for each child, something to do that is not a screen, and anything medical. Assume the checked bags may arrive later than you do, and plan the first night around that.

A room that sleeps four on paper can be a hard place to be with two children and a bedtime. Look for separate sleeping space, or at least a door that closes, a kitchen or kitchenette if you will eat breakfast and some dinners in, and a washing machine on longer trips. Those three do more for a family's week than a pool.

Pick the location for the days you will actually have. Close to a park, a beach or a transit stop beats a good rate far from everything, because every trip back for a nap or a change of clothes is a round trip. Where you can, book terms that let you cancel or change until the plan is firm.

The rule that holds up best: one anchor per day, one backup, and an unplanned afternoon. An anchor is the thing you would be disappointed to miss, such as a boat trip, a museum or a walk to a view. Put it when everyone is freshest, usually the morning, and treat everything after it as a bonus.

Build the slack in on purpose. Children and tired adults slow everything by more than you expect, so a plan that only fits if nothing goes wrong has already failed. Keep the first and last day light, and keep one day with nothing booked so the trip can absorb a rainy day or a sick child.

The age bands below are rules of thumb from how families tend to plan, not limits. Every child is different, so adjust to the people you have.

• Babies and toddlers: plan around naps and feeds, keep each outing short, and stay close to what you will do. Expect to be back at the room in the middle of the day.
• Preschool and early school age: one short, concrete outing a day works better than a long itinerary. Water, animals, playgrounds and anything they can touch hold attention.
• Older children and pre-teens: add some challenge, such as a longer walk, a guided activity or a day trip, and let them help choose and navigate.
• Teenagers: give them real choices and some independence, such as a few hours on their own in an agreed, safe area, and expect to negotiate phone time.
• Several generations: choose places with seating, shade and step-free options, and agree that the group can split for part of the day.

Children plan a better trip when it is partly theirs. Offer each child a bounded choice, such as picking one of three activities for one day or choosing the restaurant for one dinner, and then honor it. It costs little, it buys goodwill for the parts they did not pick, and it stops the trip feeling like something done to them.

Hunger and tiredness do more damage to a family day than any wrong turn. Decide roughly where lunch will be before you leave in the morning, carry snacks that are not a treat, and put a break in the middle of the day on purpose. A rest hour in a cool room is a feature of a good family trip, not a loss of sightseeing.

If a child has a food allergy or a restricted diet, look up how that is handled where you are going, learn the words for the main allergens in the local language, and carry anything you cannot easily replace.

Check every traveler's passport against the entry rules for where you are going, including how long it must remain valid and whether children need anything extra, and do it early because renewals take time. Where a child travels with only one parent, or with adults who are not their parents, find out whether the destination or the airline asks for a letter of consent.

Pack a short medical kit and any prescriptions you cannot easily replace, in their original packaging. Decide on travel insurance with specifics in mind: what a cancellation, a missed connection or a doctor's visit abroad would cost you. Keep a copy of each document on your phone and in the shared plan. TSA explains how checkpoint screening works for children, and the CDC's Travelers' Health pages list health notices by destination.

Break the budget into the same few categories every time and put a number against each before you book anything. Then add a cushion for the things that are always more expensive than they look, because there will be at least one.

• Getting there and back, including bags and transfers
• Lodging, with any cleaning or resort fees
• Getting around: car rental, fuel, parking, local transit
• Food: groceries, meals out and snacks
• Activities and entrance fees, with one or two paid highlights
• Extras: gear rental, souvenirs, tips
• A cushion of roughly a tenth of the total for the unexpected

One shared packing list beats several private ones. Split it into what each person carries, what the family shares, and what stays in hand luggage. Pack for the weather you will actually have rather than the weather you hope for, and plan to wash something halfway through so you can take less.

Give each child a small bag they are responsible for, and let them choose what goes in it. A child who has packed their own bag is a child who knows where the toy is.

The adult who plans usually becomes the only person who knows the plan. Put the itinerary, the confirmations, the documents and the costs in one shared place, and make sure every adult, and any teenager, can open it on their own phone. A plan only the planner can read makes the planner the answer desk for the whole trip.

In Ollin you describe the trip in a sentence and get a paced day-by-day plan, which everyone you invite opens from a link in their browser. There is a packing list tuned to the trip and the weather, and an encrypted Passport for travel documents. It is free for up to 15 travelers on a trip; the Group / Family plan adds a Family Circle that links up to 5 travel partners so trips, packing lists and Passport stay in sync.