I-5 (Santa Ana Freeway) or CA-91 (Riverside Freeway) takes you directly to Buena Park. Take the Knott Ave, Beach Blvd, or any of the other Buena Park exits. Anaheim is just south of Buena Park, with Fullerton to the east, so both of those cities can serve as an entry as well.
Fullerton Municipal Airport only accepts private airplanes and is 3 miles (4.8 km) from Buena Park.
Long Beach Airport is about 15 miles (24 km) from Buena Park. JetBlue Airways serves it nonstop from ten (soon-to-be twelve) destinations. It is also served by Alaska Airlines, Delta Airlines, and USAirways.
Orange County/John Wayne Airport in Santa Ana, is about 16 miles (25 km)/24 minutes from Buena Park. It is served by Alaska Airlines, Aloha Airlines, American Airlines, Continental Airlines, Delta Airlines, Frontier Airlines, Midwest Airlines, Northwest Airlines, Southwest Airlines, United Airlines, and USAirways.
Los Angeles International Airport is served by a wide array of foreign carriers as well as most US airlines.
Amtrak's Pacific Surfliner runs from Paso Robles to San Diego, and Metrolink's Orange County Line runs from Los Angeles to Oceanside. The nearest stations to Knott's Berry Farm are in Buena Park itself (serviced only by Metrolink) and in nearby Fullerton (serviced by both Amtrak and Metrolink).
The main tourism corridor in Buena Park is the E-Zone, located along Beach Boulevard. Most of the main attractions, including Knott's Berry Farm, are located here and are within walking distance of each other.
Many Orange County Transit Authority (OCTA) lines come together in Buena Park. Route 29 (Beach Blvd.) goes from the Brea Mall to downtown Huntington Beach and the Pacific Coast Highway, running right through downtown BP. Route 38 (La Palma Ave.) runs from Lakewood to the Anaheim Shopping Center, serving the Buena Park Promenade. Los Angeles Metro Route 460 connects BP with downtown Los Angeles, Norwalk, Fullerton, and Disneyland. All three routes serve Knott's Berry Farm.
By car, but most attractions are on Beach Boulevard.
The Knott's Berry Farm Hotel provides a shuttle to Disneyland.
Knott's Berry Farm 8039 Beach Blvd.; phone: 220-5200.  Open 7 days a week except for Christmas Day. Hours vary seasonally. Knott's Berry Farm is America's first theme park. It features a wide range of attractions from Camp Snoopy for the little ones to scream machines like the Silver Bullet rollercoaster and the Supreme Scream drop tower. $45 for adults, $14.95 for children 3-11, on days when the park is open past 6:00 PM, an adult ticket may be purchased to $22.50 after 4:00 PM.
Knott's Soak City USA 8039 Beach Blvd.; phone: 220-5200.  Open seasonally from May-Sept. A water park filled with water slides, a river and a wave pool. $25.95 for adults, $14,95 for children 3-11; after 3:00 PM: $15.95 for adults, $11.95 for children 3-11.
Knott's Scary Farm Halloween Haunt (seasonal website, redirects to Knott's for part of the year) - 8039 Beach Blvd.; phone: 220-5200. Evenings in October. On October evenings, Knott's is transformed into Knott's Halloween Haunt, a Halloween extraveganza for mature audiences. (Special event tickets are required for Knott's Halloween Haunt).
Independence Hall at Knott's Berry Farm 8039 Beach Blvd.; phone: 220-5200. Open 7 days a week except for Christmas Day. Across the street from Knott's Berry Farm is a recreation of Independence Hall, site of the signing of the Decleration of Independence. It's so accurate that the original structure in Philadelphia even used Knott's blueprints for its own restoration, and the replica also stood in for the actual Independence Hall in the film National Treasure. Free
Ripley's Believe It or Not! Museum - 7850 Beach Boulevard, 522-7045. 
Medieval Times Dinner and Tournament 7662 Beach Blvd.
Buena Park Downtown Shopping Mall 8308 On the Mall, 503-5000.  Accessible via La Palma Avenue, a short distance east of the Beach Boulevard intersection.
Knott's California Marketplace 8039 Beach Boulevard.  A shopping and dining district adjacent to Knott's Berry Farm. One of the highlights is the Berry Market where Knott's jams and jellies can be purchased.
Mrs. Knott's Chicken Dinner Restaurant 8039 Beach Blvd. 220-5080.  Open year round except for Christmas Day. Hours vary seasonally. Breakfast: 7:00-11:00 am; Lunch: 11:00 am-4:30 pm; Dinner: 4:30 pm-closing. Sunday brunch: 9:30 a.m. to 2:00 p.m. For Brunch Reservations call (714) 220-5055. The Knott's Berry Farm theme park actually began with this restaurant. Lines at the restaurant lasted for hours so Walter Knott built a ghost town to entertain the crowds, and this eventually evolved into the theme park. True to its history, Mrs. Knott's is an extremely popular place to eat and usually has long lines so plan to arrive early. The menu features traditional American fare with the specialty being the fried chicken and buttermilk biscuits. In general, no reservations are accepted except for the Sunday brunch and for parties of 12 or more.
Medieval Times Tournament and Dinner Show 7662 Beach Blvd., 521-2342.  Open seasonally, call or check website for show times. A Medieval feast dinner show that features knights, maidens, kings and jousting. Adults: $47.95, Children: $33.95. Check the website for discount coupons.
Fast food and diners on Orangethorpe and nearby streets.
Best Western InnSuites Hotel & Suites - Buena Park, 7555 Beach Boulevard, 522-7360, Toll-free: (888) 522-5885, Fax: 523-2883. 
Knott's Berry Farm Resort Hotel, 7675 Crescent Avenue, 995-1111, Toll Free: (866) 752-2444, e-mail: email@example.com Knott's Berry Farm's on-site hotel. Special features include deals to the theme park, special entrance to the park, complimentary shuttle to Disneyland, and special themed Snoopy rooms complete with tuck-in service provided by Snoopy himself. Great for kids.
Anaheim - the home of the Disneyland Resort - 10 to 20 minutes (travel south on Beach Boulevard then east on Katella Avenue, take LA Metro, Interstate 5, or use the free shuttle from the Knott's Hotel)
Long Beach - 20 minutes (travel west on State Route 91 then south on Interstate 710)
Los Angeles - 25 minutes (take I-5 or an Amtrak/Metrolink train to LA Union Station)
Hollywood - 32 minutes (travel to LA Union Station and transfer to the LACMTA Red Line)
Yorba Linda - Richard Nixon's Birthplace, Museum, Library, Burial, and Childhood home - 20 minutes (travel north on Beach Boulevard then east on the Imperial Highway/California State Route 90, or simply take the 91 freeway)