April 15 (Reuters) - Virgin Australia on Wednesday forecast higher fuel costs and said it has adjusted airfares and capacity for the second half, citing recent price volatility linked to ‌the conflict in the Middle East. The airline expects fuel costs, a major expense, to rise ‌by about A$30 million to A$40 million ($21.38 million to $28.51 million) in the second half of fiscal 2026. The revised forecast comes a ​day after the country's flag carrier Qantas Airways sharply raised its fuel cost outlook, ...