DA20 vs Seminole
The Seminole leads, topping 6 of 7 compared metrics.
The Diamond Aircraft DA20 (introduced 1994) and the Piper Aircraft Seminole (introduced 1978) are two aircraft buyers regularly weigh against each other. Both are trainers, which makes them natural cross-shopping rivals. The clearest separation between them is cabin capacity, where the Seminole carries more passengers. Below we compare them spec by spec, then break down which aircraft suits which mission.
6 more specs per aircraft — ceiling, climb, cabin, dimensions and more — are free with an account.
DA20 vs Seminole: the key differences
- The Seminole delivers 92% more range (DA20: 480 nm; Seminole: 920 nm).
- The Seminole delivers 22% more cruise speed (DA20: 138 kt; Seminole: 168 kt).
- The Seminole delivers 100% more passenger capacity (DA20: 2 seats; Seminole: 4 seats).
- The DA20 is the newer design (introduced 1994 versus 1978 for the Seminole), a gap of 16 years that usually shows up in avionics, cabin systems and fuel burn.
- The Seminole is the larger aircraft by maximum takeoff weight (3,800 lbs versus 1,764 lbs), which typically buys more cabin and payload at the cost of higher trip economics.
- The two differ in powerplant layout: the DA20 runs 1 engine against 2 on the Seminole — a factor in redundancy, maintenance scope and operating cost.
Which mission suits which aircraft
Both aircraft are built for short-haul and regional hops, so outright range rarely separates them — the call leans on cabin (the Seminole seats more), trip economics and what is actually available on the market. Match the airframe to how you fly most weeks, not to the headline range figure.
Which should you choose?
On published specifications the Seminole leads on both range and cabin capacity, so it suits operators who want maximum mission flexibility from a single airframe. The DA20 can still be the smarter buy on acquisition cost, operating economics, runway performance, or current availability — the factors that rarely show up in a spec sheet. Our acquisition advisory team can model both against your actual mission profile before you commit.
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DA20 vs Seminole: FAQs
Which has the longer range, the DA20 or the Seminole?
The Seminole has the longer published range — 920 nm versus 480 nm for the DA20.
Does the DA20 or Seminole seat more passengers?
The Seminole carries more passengers at maximum configuration — up to 4 seats, compared with 2 on the DA20.
Which is faster, the DA20 or the Seminole?
The Seminole cruises faster, at 168 kt versus 138 kt for the DA20.
Which is newer, the DA20 or the Seminole?
The DA20 is the newer design, introduced in 1994 versus 1978 for the Seminole.
Is the DA20 or the Seminole the larger aircraft?
By maximum takeoff weight the Seminole is the larger aircraft — 3,800 lbs versus 1,764 lbs for the DA20.
Should I buy the DA20 or the Seminole?
On published specifications the Seminole leads on both range and cabin capacity, so it suits operators who want maximum mission flexibility from a single airframe. The DA20 can still be the smarter buy on acquisition cost, operating economics, runway performance, or current availability — the factors that rarely show up in a spec sheet. Our acquisition advisory team can model both against your actual mission profile before you commit.
Still weighing up the DA20 vs Seminole?
Specs only take you so far. Our advisors give an independent recommendation based on your mission, budget and how you actually fly — and represent your side through to purchase.