MileIntelKey Takeaways
- American AAdvantage is part of OneWorld; Delta SkyMiles is part of SkyTeam. If you fly internationally, your alliance determines your partner airline options.
- American AAdvantage delivers higher average redemption value (1.3¢ vs. 1.1¢ per point), but raw value isn't everything — earning velocity and award availability matter too.
- American AAdvantage offers 4 elite tiers (AAdvantage Gold, AAdvantage Platinum, AAdvantage Platinum Pro); Delta SkyMiles offers 4 (Silver Medallion, Gold Medallion, Platinum Medallion).
- Both share 1 transfer partner — you can earn flexibly and transfer to whichever program offers better value for a given trip.
- Choose American AAdvantage if you're among OneWorld alliance travelers and those based at AA hubs (DFW, CLT, MIA, PHX, PHL). Choose Delta SkyMiles if you're among travelers in Delta hub cities (ATL, MSP, DTW, SEA, SLC, JFK, LAX, BOS).
Quick comparison
| Category | American AAdvantageAmerican Airlines | Delta SkyMilesDelta Air Lines |
|---|---|---|
| Alliance | OneWorld | SkyTeam |
| Currency | miles | miles |
| Earn Rate | 5 base miles per $1 on American flights. Elite bonuses: Gold 7, Platinum 8, Platinum Pro 9, Executive Platinum 11 miles per $1. Basic Economy does not earn miles | 5 base miles per $1 on Main Cabin+ fares. Elite bonuses: Silver +2, Gold +3, Platinum +4, Diamond +6 miles per $1. Basic Economy does not earn miles |
| Avg Value | 1.3¢ per mileWinner | 1.1¢ per mile |
| Elite TiersTie | AAdvantage Gold, AAdvantage Platinum, AAdvantage Platinum Pro, AAdvantage Executive Platinum | Silver Medallion, Gold Medallion, Platinum Medallion, Diamond Medallion |
| Expiration | Miles expire after 24 months of account inactivity. Co-branded credit card holders and members under 21 are exempt | Miles never expire as long as the account is active and in good standingWinner |
| Transfer PartnersTie | Marriott Bonvoy, British Airways Avios | Amex Membership Rewards, Marriott Bonvoy |
| Best For | OneWorld alliance travelers and those based at AA hubs (DFW, CLT, MIA, PHX, PHL) | Travelers in Delta hub cities (ATL, MSP, DTW, SEA, SLC, JFK, LAX, BOS) |
Elite Qualification Comparison
American AAdvantage
Everything earns Loyalty Points: flight miles, AAdvantage credit card spending (1 LP per dollar), Amex co-brand spending, shopping portal purchases, SimplyMiles offers, and partner activity. This makes AAdvantage the most 'earnable' status among US carriers if you're willing to optimize across all channels.
The Citi/AAdvantage Platinum Select card earns 2x on AA purchases and gas stations, 3x on eligible American Airlines purchases. The Citi Executive card adds Admirals Club access. Both contribute Loyalty Points from spend.
Delta SkyMiles
Delta's MQD-only model is the simplest in the industry. Every dollar spent on Delta flights, Delta Vacations, and eligible purchases counts toward your MQD threshold. No segments, no points, no dual paths.
The Amex MQD Headstart is the key accelerator: Delta Platinum Amex gives $2,500 MQD Headstart, Delta Reserve gives $5,000 MQD Headstart (and the two types stack — holding both means $7,500 before your first flight). Additional MQD Boost comes from card spending throughout the year.
Upgrade Instruments
American AAdvantage
- Systemwide Upgrades (SUWs)
- Confirm upgrades to Flagship First/Business on any American-operated route worldwide. The most valuable upgrade instrument in the AA ecosystem. Can be applied at booking or waitlisted. Must be on a qualifying fare class.
- 500-Mile Upgrades
- Legacy upgrade certificates for domestic flights under 500 miles. Less valuable than they once were but still clear on short-haul routes.
- Miles + Co-pay Upgrades
- Use miles plus a cash co-pay to upgrade on select flights. Available to all AAdvantage members, not just elites. Pricing varies by route and cabin.
Delta SkyMiles
- Regional Upgrade Certificates (RUCs)
- Upgrade to First/Delta One on domestic and short-haul international flights (under 2,500 miles). Can be applied at booking for confirmed upgrade or waitlisted. Platinum gets 4, Diamond gets 8 as a Choice Benefit option.
- Global Upgrade Certificates (GUCs)
- Upgrade to Delta One on any Delta-operated flight worldwide, including long-haul international. The most valuable upgrade instrument in the Delta ecosystem. Diamond gets 3 as a Choice Benefit option.
- Complimentary Upgrades
- Free upgrades to Comfort+ and First Class on domestic flights, cleared based on Medallion status, fare class, and check-in time. Diamond members clear most domestic flights; Silver clears sporadically on off-peak routes.
- Mileage Upgrades
- Pay miles + a co-pay to upgrade on select domestic flights. Available to all SkyMiles members, not just elites. Costs vary by route.
Best Redemption Sweet Spots
American AAdvantage
- US to Middle East (e.g., JFK-DOH)Qatar Airways Qsuite · 70,000 miles one-way
- Qatar's Qsuite is widely considered the world's best business class. Booking with AAdvantage miles at 70K one-way is outstanding value for a product that costs $5,000+ in cash.
- US to Japan (e.g., DFW-NRT)Japan Airlines Business Class · 60,000 miles one-way
- JAL's Sky Suites are excellent, and AAdvantage often has better partner availability than booking directly through JAL.
- US to Hong Kong/AsiaCathay Pacific Business · 70,000 miles one-way
- Cathay's reverse-herringbone business class is superb. OneWorld partnership means good availability via AAdvantage.
Delta SkyMiles
- US domestic short-haulDelta First Class · 10,000-15,000 miles one-way
- Delta domestic first on short routes (under 2 hours) can price at Flash Sale levels during off-peak. The hard product is standard recliner but the service is excellent.
- US to Europe (e.g., JFK-AMS, ATL-CDG)Delta One · 50,000-85,000 miles one-way
- Delta One suites on the A350 and A330-900neo are competitive with any business class. Award availability is better than United Polaris on high-demand routes.
- US to Latin AmericaDelta One / First · 30,000-50,000 miles one-way
- Delta's Caribbean and Latin American network is strong from ATL and JFK. Miles often price lower than competitors on these routes.
Credit Card Strategy
American AAdvantage
Citi AAdvantage Executive card ($595/year) gives Admirals Club access and strong Loyalty Point earning. The Admirals Club benefit alone is worth ~$650/year if you fly AA regularly.
Citi ThankYou Points (via Citi Strata Premier) transfer to AAdvantage at 1:1. This is a recent re-addition and opens up a second earning channel for AAdvantage miles.
Delta SkyMiles
Delta Reserve Amex ($650/year) is the cornerstone: $5,000 MQD Headstart, Sky Club access on Delta flights, and Centurion Lounge access. The MQD Headstart alone can save you $5,000 in flights toward status.
Stack with Delta Platinum Amex ($350/year) for an additional $2,500 MQD Headstart = $7,500 total before flying. Add MQD Boost from card spending throughout the year.
Choose American AAdvantage if you...
- Avg Value
- 1.3¢
- Elite Tiers
- 4
OneWorld alliance travelers and those based at AA hubs (DFW, CLT, MIA, PHX, PHL). American Airlines' loyalty program using Loyalty Points for elite qualification. Status year runs March through February.
Skip if:Travelers based outside AA hubs (DFW, CLT, MIA, PHX, PHL, ORD) — hub presence matters for upgrade clearance
Choose Delta SkyMiles if you...
- Avg Value
- 1.1¢
- Elite Tiers
- 4
Travelers in Delta hub cities (ATL, MSP, DTW, SEA, SLC, JFK, LAX, BOS). Delta Air Lines' loyalty program with MQD-only elite qualification. Miles never expire and the domestic network is one of the strongest in the US.
Skip if:International travelers who want Star Alliance or OneWorld partner awards — Delta's SkyTeam network is narrower
Frequently Asked Questions
It depends on your travel patterns and home airport. American AAdvantage is best for OneWorld alliance travelers and those based at AA hubs (DFW, CLT, MIA, PHX, PHL). Delta SkyMiles is best for travelers in Delta hub cities (ATL, MSP, DTW, SEA, SLC, JFK, LAX, BOS). The right program is the one that matches your most-flown routes and travel style.
American AAdvantage: Miles expire after 24 months of account inactivity. Co-branded credit card holders and members under 21 are exempt. Delta SkyMiles: Miles never expire as long as the account is active and in good standing.
While you can't transfer directly between American AAdvantage and Delta SkyMiles, they share transfer partners through credit card programs, which can serve as a bridge between the two ecosystems.
American AAdvantage offers 4 tiers (AAdvantage Gold, AAdvantage Platinum, AAdvantage Platinum Pro, AAdvantage Executive Platinum). Delta SkyMiles offers 4 tiers (Silver Medallion, Gold Medallion, Platinum Medallion, Diamond Medallion). The comparison depends on which benefits matter most to you — read the detailed tier breakdown above.
Yes — if you have balances in both programs, MileIntel can track them side by side and recommend which program's miles to use for each specific trip. The right program can change based on your route, cabin, and what upgrade instruments you have available.
MileIntel is an independent tool and is not affiliated with, endorsed by, or sponsored by any airline or loyalty program mentioned on this page. All trademarks belong to their respective owners.
