Delta says goodbye to the last 'Mad Dogs' flying in the US amid coronavirus retirements
Delta Air Lines will retire its last McDonnell Douglas MD-88s and MD-90s in June, bidding goodbye to two jets that have worn the widget for more than 30 years.
The June timeline comes weeks after the Atlanta-based carrier made known that both aircraft, colloquially known as "Mad Dogs," would depart the fleet this year due to the coronavirus pandemic. Neither jet is due to receive much fanfare for its retirement.
Delta described both the MD-88 and MD-90 as long-standing "workhorses" in its fleet in a statement Thursday. It first flew the MD-88 in 1987 and the MD-90 in 1995.
Get Coronavirus travel updates. Stay on top of industry impacts, flight cancellations, and more.

Carriers around the world are parking planes as restrictions and fears of COVID-19 keep nearly all would-be travelers on the ground. Trade group Airlines for America (A4A) estimates that U.S. carriers have "idled," or not flown in the past week, 3,003 aircraft as of April 28.
American Airlines, for example, is retiring its 80 Airbus A330-300s, Boeing 757 and 767s, and Embraer E190s as a result of the virus.
Delta is idling around 650 jets, or half of the combined 1,316 planes in its mainline and Delta Connection fleets. While plans remain fluid, it has only finalized the retirements of the MD-88, MD-90 and some Boeing 767 aircraft. It will also temporarily park all of its Airbus A320s and many of its Boeing 737s.
Related: Delta to park A320s, many 737s for length of coronavirus downturn
The MD-88s and MD-90s exit at Delta will mark the first time since the early 1980s that no U.S. carrier is flying a so-called Mad Dog in scheduled passenger service. The family, which included the MD-81, -82, -83, -87, -88 and -90, were at one point or another flown by most domestic carriers, with American Airlines flying as many as 362 aircraft in 2001.
American retired its last MD-80s last September.
The MD-80 family lives on in the form of the Boeing 717 at Delta and Hawaiian Airlines. However, even the future of the 717 is in question as the former carrier is reportedly in discussions to swap the jets for new Boeing 737 MAX.
Delta is scheduled to fly the MD-88s and MD-90s on 23 routes from its Atlanta (ATL) hub in May, according to Cirium schedules.
Related: Delta still flying all of its A220s even as the coronavirus grounds more than half its fleet

TPG featured card
at Bilt's secure site
Terms & restrictions apply. See rates & fees.
| 1X | Choose to earn up to 1X points on rent and mortgage payments with no transaction fee |
| 2X | Earn 2X points + the option to earn 4% back in Bilt Cash on everyday purchases |
Pros
- Choice to earn up to 1 Bilt Point per dollar spent on rent and mortgage payments
- Elevated everyday earnings with both Bilt Points and the option to earn Bilt Cash
- $400 Bilt Travel Portal hotel credit per year (up to $200 biannually)
- $200 Bilt Cash annually
- Priority Pass membership
- No foreign transaction fees
Cons
- Moderate annual fee
- Designed primarily for members seeking a premium, all-in-one card
- Earn points on housing with no transaction fee
- Choose to earn 4% back in Bilt Cash on everyday spend. Use Bilt Cash to unlock point earnings on rent and mortgage payments with no transaction fee, up to 1X.
- 2X points on everyday spend
- $400 Bilt Travel Hotel credit. Applied twice a year, as $200 statement credits, for qualifying Bilt Travel Portal hotel bookings.
- $200 Bilt Cash (awarded annually). At the end of each calendar year, any Bilt Cash balance over $100 will expire.
- Welcome bonus (subject to approval): 50,000 Bilt Points + Gold Status after spending $4,000 on everyday purchases in the first 90 days + $300 of Bilt Cash.
- Priority Pass ($469/year value). See Guide to Benefits.
- Bilt Point redemptions include airlines, hotels, future rent and mortgage payments, Lyft rides, statement credits, student loan balances, a down payment on a home, and more.


