The average bus between San Bernardino and Costa Mesa takes 3h 12m and the fastest bus takes 2h 38m. There is a bus service every few hours from San Bernardino to Costa Mesa. The journey time may be longer on weekends and holidays; use the search form on this page to search for a specific travel date.
Buses run hourly between San Bernardino and Costa Mesa. The earliest departure is at 3:50 AM at night, and the last departure from San Bernardino is at 8:10 PM which arrives into Costa Mesa at 10:59 PM. All services require a transfer at Harbor + Katella and take an average of 3h 12m. The schedules shown below are for the next available departures.

3h 9m • 1 change

3h 4m • 1 change

3h 3m • 1 change

3h 28m • 1 change

2h 41m • 1 change

3h 20m • 1 change

3h 29m • 1 change

3h 4m • 1 change

2h 41m • 1 change

3h 20m • 1 change

3h 29m • 1 change

3h 4m • 1 change

2h 41m • 1 change

3h 20m • 1 change

3h 29m • 1 change

3h 4m • 1 change
Want to know about travelling from San Bernardino to Costa Mesa? We have put together a list of the most frequently asked questions from our users such as: What is the cheapest mode of transport? What is the quickest option? How much do tickets usually cost? and many more.
No, there is no direct bus from San Bernardino to Costa Mesa. However, there are services departing from San Bernardino station and arriving at Costa Mesa station via Harbor + Katella. The journey, including transfers, takes approximately 3h 12m.
San Bernardino to Costa Mesa bus services, operated by Riverside Transit Agency, depart from San Bernardino station.
San Bernardino to Costa Mesa bus services, operated by Riverside Transit Agency, arrive at Harbor-19Th station.
The distance between San Bernardino and Costa Mesa is 77.9 km. The road distance is 104 km.
You can take a bus from San Bernardino to Harbor-19Th via Harbor + Katella and Harbor-Katella in around 3h 7m.