Air Forces comparison: 
South Korea vs 
United States
United States's air force fields 12,899 active aircraft — 8.2:1 South Korea's 1,566.
AIRS (Air Inventory Rating of Strength) Index face-off Full ranking →
South KoreaWorld #6
28.2
AIRS Index / 100
United States leads on 7 of 7 categories
United StatesWorld #1
100.0
South Korea
United States
Bars: weighted contribution to the AIRS Index (airframes × category weight; combat and bombers by generation tier, helicopters by era; the enabler, armament and availability multipliers apply on top) · figures: active airframes at each side's latest inventory year · Methodology
Key figures as of 2026
| South Korea | United States | Ratio | |
|---|---|---|---|
| Official name | Republic of Korea Air Force | United States Air Force | |
| Active aircraft | 1,566 | 12,899 | 🇺🇸 8.2× |
| Aircraft on order | 389 | 3,142 | 🇺🇸 8.1× |
| Combat aircraft | 374 | 3,002 | 🇺🇸 8.0× |
| Combat share of fleet | 23.9 % | 23.3 % | 🇰🇷 ≈ |
| Aircraft types in service | 39 | 94 | 🇺🇸 2.4× |
| Main supplier | United States · 61 % | United States · 94 % |
Show full breakdown · 6 more rowsHide the 6 extra rows
| Bombers | 0 | 147 | 🇺🇸 |
| Helicopters | 869 | 5,490 | 🇺🇸 6.3× |
| Transport aircraft | 47 | 1,371 | 🇺🇸 29× |
| Special-mission aircraft | 35 | 1,230 | 🇺🇸 35× |
| Trainers | 232 | 1,466 | 🇺🇸 6.3× |
| UAVs | 9 | 193 | 🇺🇸 21× |
Backbone aircraft most numerous in service
Fleet evolution · South Korea
Fleet evolution · United States
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Frequently Asked Questions
Which country has more military aircraft, South Korea or United States?
United States has more military aircraft with 12,899 active aircraft compared to South Korea's 1,566, a difference of 11,333 aircraft.
Which air force has more combat aircraft, South Korea or United States?
United States has more combat aircraft with 3,002 fighters and attack aircraft compared to South Korea's 374.
Which country has more military helicopters, South Korea or United States?
United States operates more military helicopters with 5,490 compared to South Korea's 869.
Which air force has more transport aircraft, South Korea or United States?
United States has more transport aircraft with 1,371 compared to South Korea's 47.
How do the South Korea and United States air forces compare in size?
United States's air force is 29.2 times larger than South Korea's in terms of total active aircraft (1,371 vs 47).
Which country has more aircraft on order, South Korea or United States?
United States has 3,142 aircraft on order compared to South Korea's 389.