Delta SkyMiles
Delta SkyMiles is the largest U.S. airline loyalty program by member count. Miles never expire. The main trade-off: Delta moved to fully dynamic pricing in 2023, eliminating award chart sweet spots. Best used by loyal Delta flyers who fly frequently and want status benefits. Amex Membership Rewards transfers 1:1 to Delta.
Not enrolled yet? Join SkyMiles — it's free →
Program Details
- Miles ExpiryNever expire
- AllianceSkyTeam (19 airlines)
- Award PricingFully dynamic — tied to cash price
- Key PartnersAir France, KLM, Korean Air, Virgin Atlantic
- Transfer SourceAmex MR → Delta 1:1 (instant)
- Domestic Value~1.1–1.2¢/mile average
- Best ForMedallion status, Delta hub cities (ATL, SLC, DTW, MSP)
Keep in Mind
Delta's dynamic pricing means award tickets can cost 3–4× more than fixed-rate programs during peak times. Best to book far in advance or use miles on off-peak routes.
Best Cards to Earn Delta Miles
American Express® Gold Card
Earns Amex MR points that transfer 1:1 to Delta SkyMiles. 4× on dining & groceries. $250/yr with $240 in credits.
Pro Strategy: Earn Amex Membership Rewards (which can also transfer to Air France Flying Blue, Virgin Atlantic, and others) instead of Delta miles directly. This gives you optionality — transfer to whichever program has the best pricing for your route.
Better Value Tip
Transfer Amex points to Flying Blue (Air France/KLM) instead of Delta directly — they partner with Delta and often have Promo Awards with 30–40% off each month, giving you better value.