This fare is also available in the Spring for about $25 cheaper at $472 round-trip, but we think the Summer deal can't be beaten for a July flight to Spain.
Travel is available for departures in the last week in July through the end of September. Searching on Iberia we found flights departing BOS on Sunday, July 29 and returning from AGP on Friday, August 10, 2018. There is a 7-day minimum stay requirement, but seats look to be available on any day of the week.
Have a look at our Boston BOS flight deals page for a full list of fares we've found today.
Neep a place in the Costa del Sol? Have a look at what is available for the displayed dates on Hotelwatchdog.