Help With Advanced Query

[Tom Smedley]

I have a current query, which is used to select holiday deals from a database. I want to edit it to ensure that, there is only one holiday displayed for:

1 Listing Per Hotel, Per Airport, Per Day

I'm unsure the best way of modifying my query?

Thanks In Advance!

Airport Field is 'outbounddepartureairport'
Hotel Field is 'hotelname'

SELECT *
FROM search_results
WHERE priceperadult < :price
AND expiry > ( NOW( ) - INTERVAL 1440 MINUTE )
AND outbounddepartureairport =:airport
AND expired <> 'expired'
AND outbounddeparture >= :startdate_full
AND outbounddeparture < :enddate_full
AND duration = :duration
AND holidayresort = :destination
ORDER BY $sort_query LIMIT 50