It provides a better search than, say, united's search. Especially if you are looking for partner-flights or more interesting layover-cities. But it also doesn'

It provides a better search than, say, united's search. Especially if you are looking for partner-flights or more interesting layover-cities. But it also doesn't include southwest flights (most aggregators don't) which often have the best price for my home airport on short-hauls.