Sizing a birthday party is usually a 15-passenger conversation, and half of them land between 10 and 20.
Headcount quartiles across birthday quote requests. The biggest single band is 15–20 passengers.
n = 12,127 · id birthday-size
Booking data by occasion
Birthday trips: what groups actually ask for
Across 12,386 quote requests on our own sites, the median group was 15 (middle half 10–20). These are requests, not completed trips, read 2026-09-14.
By the numbers
| Measure | Birthday trips |
|---|---|
| Median group size | 15 (middle half 10–20) |
| Median lead time | 26 days (middle half 12–51); 27.7% inside two weeks |
| Weekend share | 85.9% Friday or Saturday; 67.1% Saturday |
| Peak months | November and February: 19% of birthday dates |
| Requested hours | 78.2% four hours; 10.6% six or more |
| Vehicle | Party bus 71.3%; limo Sprinter 14.3% |
| Past quoted total | $1,550 median (middle half $1,280–$1,880) |
| Sample | 12,386 requests, 2023-01-01 to 2026-09-14; each figure uses the subset that stated that field |
Medians and middle halves (interquartile ranges) over quote requests submitted through Bus 2 Ride and sister company-owned websites. Not confirmed bookings, not a price for any future trip.
What this does not tell you
Birthday requests rarely state the age of the guest of honour, so these figures mix sweet sixteens, twenty-firsts and fortieths. The vehicle split in particular hides that difference.
Every published figure
Plan a birthday party and you are probably calling 26 days out — that is our median — while the middle half stretches from 12 to 51 days.
Days of notice on birthday requests, at the middle value and the quartiles. 27.7% of them reach us inside two weeks of the date.
n = 12,386 · id birthday-lead
Look at when birthday trips actually happen and 85.9% are weekend dates, with Saturday taking 67.1%.
Day of week of the requested event date on birthday trips.
n = 12,386 · id birthday-weekday
Demand for birthday trips bunches into November and February — together 19% of the year's dates.
Share of birthday event dates falling in the two busiest months for that occasion.
n = 12,386 · id birthday-season
78.2% of birthday trips are written for the four-hour block, and 10.6% run six hours or longer.
Duration split across birthday quotes that name a number of hours.
n = 7,439 · id birthday-hours
Vehicle of choice for a birthday party is clear enough: party buses on 71.3% of quotes, limo-style Sprinters on 14.3%.
Share of birthday quotes by vehicle category.
n = 5,021 · id birthday-vehicle
Birthday quotes we have written cluster around $1,550, with the middle half from $1,280 to $1,880.
Quartiles of the total quoted on birthday trips, pooled across markets and durations. History only, and your date sets the real number.
n = 3,747 · id birthday-quote
Cite as: Bus 2 Ride, “Group Transportation Booking Data: Birthday trips,” version 2026-09-14, https://bus2ride.com/data-insights/birthdays. Aggregates over quote requests submitted through Bus 2 Ride and sister company-owned websites, event dates 2023-01-01 to 2026-09-14. CC BY 4.0.
Download every figure as CSV · Method and national figures · Birthday party transportation
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