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Costa Mesa to Ontario buses

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Trip Overview

The average bus between Costa Mesa and Ontario takes 4h 27m and the fastest bus takes 3h 15m. There is a bus service every few hours from Costa Mesa to Ontario. The journey time may be longer on weekends and holidays; use the search form on this page to search for a specific travel date.

4h 27m
Duration
42 mi
Distance
$12
Average price
Hourly
Frequency

Line 57 bus, line 286 bus

best
  1. Take the bus from Bristol-Sunflower to Ring-Brea Mallbus bus 57
  2. Take the bus from Brea Mall to Pomona Transit Centerbus bus 286
4h 12m
$7–12

Costa Mesa to Ontario bus times

Buses run hourly between Costa Mesa and Ontario. The earliest departure is at 5:15 AM in the morning, and the last departure from Costa Mesa is at 10:27 PM which arrives into Ontario at 7:28 AM. All services require a transfer at Bristol-Sunflower and take an average of 4h 27m. The schedules shown below are for the next available departures.

Departing Tuesday, October 13, 2026

  •  → 

    OCTAOCTAFoothill TransitOmnitrans4h 6m • 3 changes

  •  → 

    OCTAOCTAFoothill TransitOmnitrans4h 13m • 3 changes

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    OCTAOCTAFoothill TransitOmnitrans4h 3m • 3 changes

  •  → 

    OCTAOCTAFoothill TransitOmnitrans4h 7m • 3 changes
  • Show more

Departing Wednesday, October 14, 2026

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    OCTAOCTAFoothill TransitOmnitrans3h 15m • 3 changes

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    OCTAOCTAFoothill TransitOmnitrans3h 25m • 3 changes

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    OCTAOCTAFoothill TransitOmnitrans3h 57m • 3 changes

  •  → 

    OCTAOCTAFoothill TransitOmnitrans3h 59m • 3 changes
  • Show more

Departing Thursday, October 15, 2026

  •  → 

    OCTAOCTAFoothill TransitOmnitrans3h 15m • 3 changes

  •  → 

    OCTAOCTAFoothill TransitOmnitrans3h 25m • 3 changes

  •  → 

    OCTAOCTAFoothill TransitOmnitrans3h 57m • 3 changes

  •  → 

    OCTAOCTAFoothill TransitOmnitrans3h 59m • 3 changes
  • Show more

Departing Friday, October 16, 2026

  •  → 

    OCTAOCTAFoothill TransitOmnitrans3h 15m • 3 changes

  •  → 

    OCTAOCTAFoothill TransitOmnitrans3h 25m • 3 changes

  •  → 

    OCTAOCTAFoothill TransitOmnitrans3h 57m • 3 changes

  •  → 

    OCTAOCTAFoothill TransitOmnitrans3h 59m • 3 changes
  • Show more

Frequently asked questions

Want to know about travelling from Costa Mesa to Ontario? 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.

Map of how to get from Costa Mesa to Ontario.ExpandLaunch map view
  • Distance: 42.5 mi
  • Duration: 4h 27m

What companies run services between Costa Mesa, CA, USA and Ontario, CA, USA?

You can take a bus from Harbor-Bernard to Holt @ Palm via Bristol-Sunflower, Ring-Brea Mall, Brea Mall, and Pomona Transit Center in around 4h 12m.

Operators