Exclude 3 characters in a REGEX

I am trying to exclude 'DFP' and it's adjoining time from being found by the regex. With an input string $day example:

..<omitted>...MIA 09:15<br />DEN 10:15<br />DEN 11:20<br />MIA 12:30<br />DFP 12:45.....<omitted>
(this is only an example. I haven't seen anything that would allow me to use look-ahead or behind)

$times becomes:
   [0] => Array
        (
            [0] => MIA 09:15
            [1] => DEN 10:15
            [2] => DEN 11:20
            [3] => MIA 12:30
            [4] => DFP 12:45
        )

Is the [^DFP] used somehow in here?

preg_match_all ( '/[A-Z]{3} [0-9]{2}:[0-9]{2}/', $day, $times );

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