Delta SkyMiles are exceptionally versatile because Delta is a founding member of the SkyTeam alliance, which includes over 18 partner airlines such as Air France, KLM, Korean Air, and Aeromexico. In 2026, you can use your miles to book "Award Travel" on any of these partners directly through Delta's website. Beyond the core alliance, Delta has strategic bilateral partnerships with carriers like LATAM, Virgin Atlantic, and WestJet. This means you can earn SkyMiles when flying on these airlines by entering your SkyMiles number at booking, and you can redeem miles for seats on their flights. Furthermore, if you hold "Medallion" elite status, many of your benefits—like priority boarding, lounge access, and extra baggage—transfer to these partner airlines, making the SkyMiles program a global currency for frequent travelers.