Agents can use promo code "SEPTSALE100" to save customers £100 on bookings with a minimum spend of £700, or code "SEPTSALE200" for a £200 discount with a minimum spend of £2,000.
The discount codes can be applied on the extras page when booking a package through the operator’s website.
The promotion will run until 10pm on 14 September and is valid on all holidays departing between 9 September 2021 and 31 October 2022.
Easyjet Holidays’ head of distribution, Brad Bennetts, said: "We know that lots of people are still looking to book a last minute getaway, while others are planning ahead to 2022, so we wanted to launch a promotion to not only give holidaymakers even better value but to give our trade partners, who’ve worked so hard this summer in getting people away, an offer to support with bookings."