Exhibit 99.1 PRESS RELEASE BRISTOW GROUP REPORTS FIRST QUARTER 2024 RESULTS AND ISSUES NEW FINANCIAL OUTLOOK Houston, Texas May 7, 2024 • Total revenues of $337.1 million in Q1 2024 compared to$337.9 million in Q4 2023 • Net income of $6.6 million, or$0.23 per diluted share, in Q1 2024 compared to net loss of $7.9 million, or$0.28 per diluted share, in Q4 2023 • EBITDA adjusted to exclude special items, asset dispositions and foreign exchange gains (losses) was $47.5 million in Q1 2024 compared to$46.0 ...