A survey by The Guide to Sleeping in Airports last year revealed Nigeria's Port Harcourt International Airport to be the worst in the world, but did you know that  Newark Liberty International Airport, New Jersey has been adjudged the most miserable in the United States?

This is according to a ranking by Milescards.com which ranked US airports by delays for the summer season.

A Misery Score is earned by having the lowest on-time ranking (on average, only 68.4%of flights flying into Newark arrive on time) having one of the longest wait-times for takeoff, and being one of the slowest airports for getting to the gate after landing.

Newark nabbed the top spot by scoring 95 out of a 100% while close seconds - LaGuardia, Chicago O’Hare, and New York’s Kennedy Airport all tied for second with a score of 94.

On the flip side, San Jose and Portland emerged the least miserable airports.

In general however, June is widely regarded as the worst month on the calendar for flight delays at US airports, owing to thunderstorms and the massive influx of travelers.

So, if you're looking to travel to the US this summer, you know what airports to avoid and also know to arrive at least 3 hours ahead of timing owing to the super long security lines.