The Delta SkyMiles Blue American Express Card edges out the Discover it Miles for most cardholders — it wins on 2 of 4 comparison categories and offers 10,000 pts signup bonus earns more (up to 2x vs 1.5x). The Discover it Miles is the better choice if you prioritize a different rewards ecosystem.
Delta SkyMiles Blue American Express Card vs Discover it Miles
Get the clearer winner first, see the specific exception case, and only personalize further if the decision is genuinely close.
Delta SkyMiles Blue American Express Card is the better choice for most people.
Delta SkyMiles Blue American Express Card wins the measurable comparison on this page. Choose Discover it Miles only if best if this rewards ecosystem fits the cards and travel programs you already use..
Best if this rewards ecosystem fits the cards and travel programs you already use.
Review Delta SkyMiles Blue American Express CardBest if this rewards ecosystem fits the cards and travel programs you already use.
Review Discover it MilesWhy we picked this winner
- Delta SkyMiles Blue American Express Card wins 2 of 4 comparison categories in CardCurator's quick verdict model.
- Top earn rate: Delta SkyMiles Blue American Express Card reaches 2x; Discover it Miles reaches 1.5x.
- Annual fee: Delta SkyMiles Blue American Express Card is no annual fee; Discover it Miles is no annual fee.
- Current public bonus values are approximately $120 and $1.
High-confidence recommendation
The winner has a clear edge in multiple measurable categories, so most readers do not need a deeper personalization step before acting.
Which Card Comes Out Ahead?
Delta SkyMiles Blue American Express Card is the stronger all-around option for most people in this matchup because it wins more measurable categories in our scoring model. Discover it Miles still makes sense if your spending pattern lines up better with its fee profile, issuer rules, or rewards ecosystem.
Best if this rewards ecosystem fits the cards and travel programs you already use.
Best if this rewards ecosystem fits the cards and travel programs you already use.
Why you can trust this answer
CardCurator compares measurable card economics first, then uses deeper rewards intelligence from program data, transfer partners, award charts, and live bonuses when a decision depends on the ecosystem behind the card rather than the card headline alone.
Personalize this answer without sharing sensitive data
Start with a few signals that usually decide close matchups: rough monthly spend, your top category, annual-fee tolerance, and whether you already hold either card.
This step is meant to break close ties without asking for uploads, account creation, or exact spending data.
Delta SkyMiles Blue American Express Card
Assumptions: default assumptions
Delta SkyMiles Blue American Express Card still comes out ahead after a light personalization pass, which suggests the recommendation is fairly robust.
- Delta Purchases 2x
- Dining 2x
- All Other Purchases 1x
- All Purchases 1.5x
Quick summary
A short version of the comparison with the main differences at a glance.
The Delta SkyMiles Blue American Express Card edges out the Discover it Miles for most cardholders — it wins on 2 of 4 comparison categories and offers 10,000 pts signup bonus earns more (up to 2x vs 1.5x). The Discover it Miles is the better choice if you prioritize a different rewards ecosystem. On raw upside, Delta SkyMiles Blue American Express Card tops out at 2x versus 1.5x for Discover it Miles. Current signup bonus values are roughly $120 for Delta SkyMiles Blue American Express Card and $1 for Discover it Miles. Summary generated July 28, 2026. Source: https://cardcurator.ai/compare/delta-skymiles-blue-american-express-card-vs-discover-it-miles
- Delta SkyMiles Blue American Express Card wins 2 of 4 comparison categories in CardCurator's quick verdict model.
- Top earn rate: Delta SkyMiles Blue American Express Card reaches 2x; Discover it Miles reaches 1.5x.
- Annual fee: Delta SkyMiles Blue American Express Card is no annual fee; Discover it Miles is no annual fee.
- Current public bonus values are approximately $120 and $1.
Common Questions: Delta SkyMiles Blue American Express Card vs Discover it Miles
Is the Delta SkyMiles Blue American Express Card or Discover it Miles better for dining?
Delta SkyMiles Blue American Express Card earns 2x on dining; Discover it Miles has no dining bonus.
Which has the higher signup bonus in 2026?
Delta SkyMiles Blue American Express Card currently offers 10,000 pts signup bonus (spend $1,000 in 6 months). Discover it Miles offers $1 signup bonus. Delta SkyMiles Blue American Express Card has the larger bonus.
Which card is better for international travel?
Both cards charge no foreign transaction fees, making either a solid choice for international travel.
Can I hold both the Delta SkyMiles Blue American Express Card and the Discover it Miles?
In most cases yes — holding both is allowed and can be a smart strategy for maximizing rewards across different spending categories. Delta SkyMiles Blue American Express Card is from American Express and Discover it Miles is from Discover, so they're governed by separate bank policies.
Keep Researching
If this matchup is close, the stronger next step is usually to read the full card reviews or use a broader ranking page instead of comparing random pairs one by one.