The best way to book flights for large group, is to use an air charter broker. That is because using commercial flights or group space has its limits. The term Group Space is designed for groups of 9+ but in reality is typically capped at about 20 passengers.

Booking a flight for a group of 12 people in 2026 is best handled through an airline’s Group Travel Department rather than a standard booking website. Most airlines define a "group" as 10 or more passengers traveling on the same itinerary. By using the group desk, you can often secure a "locked-in" fare for the entire party, which prevents the price from jumping as seats are filled. One of the biggest advantages of group booking is the flexibility with names; you can usually hold the seats with a deposit and provide the final passenger names only 30 to 60 days before departure. If you try to book 12 people on a site like Expedia or Google Flights, you may find that only 4 seats are available at the lowest price, and the remaining 8 will be significantly more expensive. For 2026 travel, it is also worth checking with a specialized travel agent, as they can negotiate "deviation" rules if some members of your group need to fly back on different dates while still keeping the group discount for the outbound leg of the journey.