The average bus between Riverside and Costa Mesa takes 2h 44m and the fastest bus takes 2h 13m. The bus service runs several times per day from Riverside 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 every 2 hours between Riverside and Costa Mesa. The earliest departure is at 4:16 AM at night, and the last departure from Riverside is at 8:37 PM which arrives into Costa Mesa at 10:59 PM. All services require a transfer at Harbor + Katella and take an average of 2h 44m. The schedules shown below are for the next available departures.

2h 15m • 1 change

2h 54m • 1 change

2h 59m • 1 change

2h 34m • 1 change

2h 15m • 1 change

2h 54m • 1 change

2h 59m • 1 change

2h 34m • 1 change

2h 15m • 1 change

2h 54m • 1 change

2h 59m • 1 change

2h 34m • 1 change

2h 15m • 1 change

2h 54m • 1 change

2h 59m • 1 change

2h 34m • 1 change
Want to know about travelling from Riverside 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 Riverside to Costa Mesa. However, there are services departing from Riverside station and arriving at Costa Mesa station via Harbor + Katella. The journey, including transfers, takes approximately 2h 44m.
Riverside to Costa Mesa bus services, operated by Riverside Transit Agency, depart from Vine St. Mobility Hub station.
Riverside to Costa Mesa bus services, operated by Riverside Transit Agency, arrive at Harbor-19Th station.
The distance between Riverside and Costa Mesa is 59.5 km. The road distance is 86 km.
You can take a bus from Vine St. Mobility Hub to Harbor-19Th via Harbor + Katella and Harbor-Katella in around 2h 37m.