The average delay per flight was higher at the West Sussex airport than any other in the country.
Information from the Civil Aviation Authority analysed by the BBC showed that from January 2015 to March 2016, passengers were delayed by an average of 18 minutes at Gatwick.
By comparison, the average delay was around 14 minutes at Luton, Manchester and Glasgow – and 13 at Heathrow.
The flight in the UK most troubled by delays was a Pakistan International Airlines flight from Manchester to New York's John F Kennedy Airport – it was late on eight out of 10 recorded flights in 2015 and delayed by an average of 88 minutes.
A spokeswoman for Gatwick Airport told the BBC: "We regret any delays our passengers experience; however several incidents beyond Gatwick's control influenced the airport's performance during this period, including numerous air traffic control strikes across European airspace, impacting the airport's whole flight schedule including our long haul routes.
"Gatwick has more flights to Europe than any UK airport and can therefore be impacted disproportionately by events on the continent."
UK's best (and worst) airports
UK's best (and worst) airports
The worst airport in the UK is Aberdeen Airport according to British travellers. The airport, which handles more than three million passengers per year, was given the thumbs down for its facilities including its baggage carousel area, which passengers said is in need of updating.
Luton Airport is in at number 14 and is the least favourite London airport for UK travellers. It's the fifth busiest UK airport and serves as a base for airlines such as easyJet, Monarch and Thomson Airways. One passenger wrote on airline review website Skytrax: "As a frequent flyer all I can say is how embarrassing this airport is as a gateway to our country."
London City Airport is small compared to the capital's four other international airports and is mainly used by business travellers. Passengers said the airport has "expensive parking," although it does offer free WiFi for all. The airport is busiest during the winter months when most airlines fly to top ski destinations.
London Stansted Airport is not the most favoured UK airport by British travellers and was blasted for its "extremely long queues at check-in". The airport located in Essex is the largest base for budget carrier Ryanair, with over 100 destinations served by the airline. In 2012, it was named the fourth busiest airline in the UK after Heathrow, Gatwick and Manchester.
Formerly known as Aldergrove Airport, Belfast International Airport lies near the village of Aldergrove in Northern Ireland. It's the busiest airport in Northern Ireland and is the second busiest on the island of Ireland, after Dublin Airport. Malaga, Faro and Alicante are the most popular international routes to and from Belfast International Airport, while Liverpool, Gatwick and Stansted are the busiest domestic routes.
Bristol Airport in North Somerset handles over 5.9 million passengers a year, with Amsterdam, Dublin and Edinburgh the most popular flight routes. It has one of the shortest international airport runways in the country at just 2,011 metres in length, which means large planes are rarely, preventing most long-distance flights.
Located in North West Leicestershire, East Midlands Airport serves the counties of Derbyshire, Nottinghamshire, Leicestershire, Staffordshire and South Yorkshire. The airport has established itself as a hub for low-cost carriers, like Jet2.com, Ryanair and Monarch.
Edinburgh Airport is Scotland's busiest airport and its upgraded terminal building features new car parking facilities and a larger arrivals hall. There are plans for expansion at the airport, with passenger numbers expected to reach a whopping 26 million per year by 2030.
In at number seven is Glasgow Airport, which is located six miles west of the city centre and is Scotland's second busiest airport and the eighth busiest in Britain. The airlines with the biggest presence are British Airways and Loganair, and the busiest routes are the Netherlands, the UAE, Spain and Ireland.
Named after a famous Beatle, Liverpool John Lennon Airport picked up the sixth spot, connecting travellers to UK and European destinations. Around 4.5 million passengers pass through the airport each year. While there is no train station at Liverpool John Lennon Airport, there are shuttle buses from Liverpool South Parkway and Liverpool Hunts Cross.
Britain's busiest airport Heathrow was named the fifth best overall, but was voted the easiest airport to get to and from. Although it is served by Heathrow Express, which is one of the most expensive train journeys in the world, it is also served by several low-cost options, such as London Underground, Heathrow Connect and coach services. Travellers said Heathrow has a "great variety of shops and restaurants," such as Gordon Ramsay Plane Food, The Tin Goose and The Five Tuns.
Birmingham Airport was voted the fourth best British airport. Passengers said it is "compact and customer friendly". Birmingham Airport was also named the fourth easiest airport to get to in the UK, after Gatwick, Manchester and Heathrow Airports.
Newcastle Airport was voted by passengers as the easiest airport to travel through. Passengers of the airport commented on its simple layout and good choice of food and drink options, saying it is "easy to navigate and clean".
Britain's second busiest airport, London Gatwick Airport, handles more than 34 million passengers every year and came in second place, with passengers praising its friendly staff and large check-in areas.
Manchester Airport is Britain's best airport, according to UK travellers! The third busiest airport in the UK welcomes more than nine million passengers each year and hit the top spot for the best customer service, facilities and shopping, as well as the best bars and restaurants. Passengers commended it for being well organised, passenger-friendly and for its accessibility.
A new survey has revealed British travellers' favourite UK airports. The poll by Skyscanner asked 1,600 British flyers to rate the UK's airport on customer service, facilities, shopping, bars and restaurants, and ease of travelling through. Skyscanner's Victoria Bailie said the winning airport is one of Britain's busiest but "it still manages to keep passengers happy". Click through the gallery to find out which airport scooped the top spot...