Since all locations are within Baldwin Park, CA, the traveler can use their own car or hail a ride-sharing service such as Uber or Lyft. Total travel time would be around 30 minutes and should not cost more than $30.
If you have more time, consider visiting Morgan Park, which offers a playground, walking paths, and picnic areas. For those with less time, consider skipping the Farmers' Market or the bowling alley.
The nearest international airport to Baldwin Park is the Los Angeles International Airport (LAX), which is 25 miles away from the city center. Another option is the Ontario International Airport (ONT), which is 18 miles away. Both airports are easily accessible by car or public transportation.