Is the sentence right or wrong?
Andy always tries to find the cheapest flights.
Short one-syllable adjectives
end in -y
Adjectives ending in -y change to -ier and -iest
2 and more syllables
Add "more" and most "before" the adjective, the adjective doesn’t change
Remember these words!
In short words with a vowel between two consonants, we must double the last consonant. Otherwise, we won't keep the pronunciation.
big → bigger → the biggest sad → sadder → the saddest hot → hotter → the hottest
Adjectives in the superlative form need the definite article "the".
It was the happiest day of my life.
It is the most expensive laptop on the market.
We use the word "than" to compare two objects.
The old model was good, but the new one is better. The new model is better than the old one.
The USA is larger than Mexico.
(Not) as...as means that the objects are (not) equal when we compare them by a certain property.
The first season of the series is popular, and the second one is popular, too. The second season of the series is as popular as the first one.
My solution is not as good as yours. Your solution is better.