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Delta today reported financial and operating performance for June 2016, amid a decline in unit revenues. 

Consolidated PRASM (passenger revenue per available seat-mile) for June dipped 5 percent compared to the same timeframe a year ago, according to Delta’s press release. The airline said the decline is due to close-in domestic yield weakness and continued pressures from foreign exchange.

Mainline completion factor - the percentage of flights that were not canceled - came in at 99.98 percent for the month, with preliminary data showing 83.4 percent of those flights arriving on time in June.