The average bus between Costa Mesa and Fontana takes 4h 38m and the fastest bus takes 3h 39m. The bus service runs several times per day from Costa Mesa to Fontana. 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 3 hours between Costa Mesa and Fontana. The earliest departure is at 12:25 AM at night, and the last departure from Costa Mesa is at 9:24 PM which arrives into Fontana at 6:45 AM. All services require a transfer at Harbor-Katella and take an average of 4h 38m. The schedules shown below are for the next available departures.


3h 39m • 2 changes

3h 57m • 2 changes

4h 18m • 2 changes

4h 21m • 2 changes

3h 39m • 2 changes

3h 57m • 2 changes

4h 18m • 2 changes

4h 21m • 2 changes

3h 39m • 2 changes

3h 57m • 2 changes

4h 18m • 2 changes

4h 21m • 2 changes

3h 56m • 2 changes

4h 6m • 2 changes

4h 15m • 2 changes

4h 15m • 2 changes

3h 39m • 2 changes

3h 57m • 2 changes

4h 18m • 2 changes

4h 21m • 2 changesWant to know about travelling from Costa Mesa to Fontana? 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 Costa Mesa to Fontana. However, there are services departing from Costa Mesa station and arriving at Fontana station via Harbor-Katella. The journey, including transfers, takes approximately 4h 38m.
Costa Mesa to Fontana bus services, operated by OCTA, depart from Park-19Th station.
Costa Mesa to Fontana bus services, operated by OCTA, arrive at San Bernardino station.
The distance between Costa Mesa and Fontana is 67.2 km. The road distance is 119 km.
You can take a bus from Park-19Th to Fontana Metrolink Transit Center via Harbor-Katella, Katella + Harbor, and San Bernardino Transit Center in around 4h 51m.