More than 1.25 million seats to and from the UK are being discounted by EasyJet.
Rates have been cut by 15% with package holiday prices reduced by up to £200, including those over the May half term.
The sale covers thousands of flights to more than 130 destinations between May 13 this year and March 2, 2025.
Discounted package holidays cover travel until October 31, 2025.
Bookings must be made by 11pm on April 30.
New routes this summer to Skiathos and Salerno from Gatwick, Larnaca in Cyprus and Enfidha in Tunisia from Birmingham, Belfast and Glasgow, and Reus from Manchester are included.
Discounted one-way fares start at £19.99 from Liverpool to Belfast, rising to £61.99 from Gatwick to Skiathos.
EasyJet holidays deals start at £307 per person based on seven nights self-catering in Dalaman departing from Luton airport on May 7.
The budget airline’s UK you try manager Ali Gayward said: “We are delighted to be launching our Big Orange Sale on flights and package holidays, so that customers can take advantage of discounts on 1.25 million seats to and from the UK and book a great value holiday.
“With flights across over 130 destinations from the UK to choose from, to some of the most popular holiday destinations across Europe, North Africa and the Middle East, now is a great time to book a trip with EasyJet, and we look forward to taking even more of our customers away this summer.”