It’s calling on passengers to help speed up the security process by making sure all liquids, gels and pastes are in quantities of 100ml or less and presented in a clear, plastic bag.
It’s also asking that electronic items, such as iPads and laptops, be presented outside their carriers for inspection.
Chief executive Gordon Dewar said: “Our passenger numbers have continued to rise each month of 2015 and last month was our busiest April on record.
“We’ve seen strong performances on both domestic and international routes with London doing particularly well. A number of new routes have also launched since April last year, including Madrid with Iberia Express, Malaga with Norwegian and Copenhagen with SAS.
“With summer just around the corner it’s vital that passengers are prepared for security so we’re calling on everyone travelling to be prepared. You can do this easily and save time by ensuring all liquids, gels and pastes are 100ml or less and are presented in a clear plastic bag outside your hand luggage. Electronic items, like iPads and laptops, should also be presented outside their carriers for inspection. Remember you can take larger bottles in checked-in hold baggage.
“We know that over the last few months there have been incidents where our security process has taken longer than we would like. We’ve been working hard to resolve this and our analysis has shown that by being prepared means passengers will be able to pass through security in the quickest time possible.
“It’s a busy time for us as we prepare for the arrival of Etihad in June and have just welcomed the launch of American Airlines’ new service to JFK in New York. We’re expecting both of these new long haul routes to be very popular with customers.”
Edinburgh Airport enjoyed its busiest April ever last month – having experienced a 10 per cent rise in the number of passengers travelling through the terminal since 2014.
A total of 928,329 people landed and departed at Edinburgh Airport in April 2015.