To find the ratio of flights to Philadelphia to flights to Los Angeles, you can express the numbers as a fraction:
\[ \text{Ratio} = \frac{\text{Flights to Philadelphia}}{\text{Flights to Los Angeles}} = \frac{102}{272} \]
Next, simplify the fraction by finding the greatest common divisor (GCD) of 102 and 272.
Both 102 and 272 can be divided by 34:
\[ \frac{102 \div 34}{272 \div 34} = \frac{3}{8} \]
Thus, the ratio of flights to Philadelphia to flights to Los Angeles is 3:8.