Events

Start Planning Your Meetings or Events Here

Tell us about your event, then we'll contact you and plan it together

24

Event Rooms

40569 SQ FT

Total Event Space

900

Capacity Largest Space
Explore Us Virtually
Take a virtual tour of our centrally located Orange County hotel and view our spacious hotel rooms and suites, WestinWORKOUT® hotel fitness center, heated outdoor pool, and 40,000 square feet of versatile event space.
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Executive Boardroom

Meeting and Events

Take advantage of over 40,000 square feet of meeting space in the heart of Costa Mesa

Our largest venue, the Plaza Ballroom, has hosted some of Costa Mesa’s premier meetings Learn More
Enjoy post-meeting cocktails under the stars, on our outdoor Waterfall Terrace or Rooftop Terrace
Stay focused during your next Orange County event with our nutritious catering selections Learn More
Our team will see to everything from banquet hall décor to arranging group outings in Costa Mesa
Get our exclusive meeting rate when booking 10 or more rooms for guests traveling to Costa Mesa

Experience Costa Mesa

Discover a haven of wellness and renewal to feed your journey in Orange County.

aerial view of pool
Waterfall Terrace

Weddings and Occasions

Our banquet halls accommodate everything from intimate bridal parties to grand wedding receptions

Welcome wedding guests to Costa Mesa in style with a reception in the grand Plaza Ballrooom venue Learn More
Let our outdoor space inspire your wedding or special event with the beauty of Costa Mesa
Join your wedding guests on a tour of Costa Mesa's attractions or hit the vibrant nightlife venues
Our hotel offers a special package for Indian weddings; let us honor your unique cultural traditions
Choose a wedding package including venue rental, catering and fun group outings in Costa Mesa
private dining austin
Rewarding Travel from start to Finish
Earn up to 60,000 points per qualified event with Marriott Bonvoy Events. Elite members earn more with bonus points.

Please note: all room sizes are approximate.

Frequently Asked Questions

The Westin South Coast Plaza, Costa Mesa