Busiest airlines, September 2025

179,579 flights, American Airlines (AA)

The busiest airline in September 2025 was American Airlines (AA), with 179,579 flights.

September 2025 (1–30 September 2025) Source: www.airportia.com/statistics/busiest-airlines/2025-09/

Period: 1–30 September 2025 (UTC). Data calculated on 3 November 2026 at 04:00 UTC. In the average departure delay, early and cancelled flights count as 0. How we calculate this

Top 15 airlines by flights
Busiest airlines, September 2025: top 15, flights1–30 September 2025. Source: Airportia.1. American Airlines (AA): 179,579 (179,579 flights)1. American Airlines (AA)179,5792. Delta Air Lines (DL): 149,560 (149,560 flights)2. Delta Air Lines (DL)149,5603. United Airlines (UA): 143,339 (143,339 flights)3. United Airlines (UA)143,3394. Southwest Airlines (WN): 112,239 (112,239 flights)4. Southwest Airlines (WN)112,2395. Ryanair (FR): 104,240 (104,240 flights)5. Ryanair (FR)104,2406. China Eastern Airlines (MU): 67,128 (67,128 flights)6. China Eastern Airlines (MU)67,1287. China Southern Airlines (CZ): 66,205 (66,205 flights)7. China Southern Airlines (CZ)66,2058. IndiGo Airlines (6E): 60,408 (60,408 flights)8. IndiGo Airlines (6E)60,4089. easyJet (U2): 55,590 (55,590 flights)9. easyJet (U2)55,59010. LATAM Airlines (LA): 48,963 (48,963 flights)10. LATAM Airlines (LA)48,96311. Air China (CA): 46,751 (46,751 flights)11. Air China (CA)46,75112. Turkish Airlines (TK): 43,276 (43,276 flights)12. Turkish Airlines (TK)43,27613. Alaska Airlines (AS): 38,871 (38,871 flights)13. Alaska Airlines (AS)38,87114. Lufthansa (LH): 35,006 (35,006 flights)14. Lufthansa (LH)35,00615. AirAsia (AK): 31,616 (31,616 flights)15. AirAsia (AK)31,616

Every airline with at least one flight in the period and reported departure times is included.

Full ranking: 764 airlines

The first 100 are shown here; the CSV has all 764.

# Airline Country Flights Avg departure delay Cancelled Flights
1 American Airlines (AA) United States United States 179,579 30.2 min 1.0% 179,579
2 Delta Air Lines (DL) United States United States 149,560 22.8 min 0.5% 149,560
3 United Airlines (UA) United States United States 143,339 27.7 min 0.6% 143,339
4 Southwest Airlines (WN) United States United States 112,239 23.2 min 0.2% 112,239
5 Ryanair (FR) Ireland Ireland 104,240 29.5 min 0.1% 104,240
6 China Eastern Airlines (MU) China China 67,128 23.0 min 2.2% 67,128
7 China Southern Airlines (CZ) China China 66,205 25.5 min 2.7% 66,205
8 IndiGo Airlines (6E) India India 60,408 17.0 min 0.1% 60,408
9 easyJet (U2) United Kingdom United Kingdom 55,590 35.0 min 1.1% 55,590
10 LATAM Airlines (LA) Chile Chile 48,963 19.4 min 1.3% 48,963
11 Air China (CA) China China 46,751 22.0 min 3.9% 46,751
12 Turkish Airlines (TK) Turkey Turkey 43,276 26.0 min 0.5% 43,276
13 Alaska Airlines (AS) United States United States 38,871 24.3 min 0.8% 38,871
14 Lufthansa (LH) Germany Germany 35,006 27.4 min 1.1% 35,006
15 AirAsia (AK) Malaysia Malaysia 31,616 28.0 min 0.3% 31,616
16 Air Canada (AC) Canada Canada 30,017 27.0 min 1.5% 30,017
17 Wizz Air (W6) Hungary Hungary 29,558 33.2 min 0.1% 29,558
18 All Nippon Airways (NH) Japan Japan 27,768 21.2 min 1.3% 27,768
19 Japan Airlines (JL) Japan Japan 27,382 21.2 min 1.1% 27,382
20 British Airways (BA) United Kingdom United Kingdom 27,361 36.9 min 1.2% 27,361
21 Air France (AF) France France 25,485 32.1 min 1.3% 25,485
22 Qantas (QF) Australia Australia 25,401 13.9 min 2.1% 25,401
23 Azul Brazilian Airlines (AD) Brazil Brazil 24,317 13.4 min 1.0% 24,317
24 Aeroflot (SU) Russia Russia 23,679 20.3 min 1.7% 23,679
25 SAS (SK) Norway Norway 22,444 15.7 min 1.2% 22,444
26 JetBlue Airways (B6) United States United States 22,052 31.5 min 0.5% 22,052
27 Hainan Airlines (HU) China China 21,770 22.5 min 4.1% 21,770
28 Shenzhen Airlines (ZH) China China 21,172 30.6 min 6.2% 21,172
29 Avianca (AV) Colombia Colombia 21,041 22.3 min 1.4% 21,041
30 Vueling (VY) Spain Spain 20,955 28.0 min 1.1% 20,955
31 KLM (KL) Netherlands Netherlands 20,919 33.1 min 5.3% 20,919
32 Pegasus Airlines (PC) Turkey Turkey 20,438 27.0 min 0.1% 20,438
33 GOL Transportes Aeros (G3) Brazil Brazil 19,689 14.3 min 0.8% 19,689
34 Air India (AI) India India 19,354 26.8 min 0.4% 19,354
35 Qatar Airways (QR) Qatar Qatar 19,068 24.2 min 0.2% 19,068
36 Xiamen Airlines (MF) China China 19,059 24.8 min 1.8% 19,059
37 Shandong Airlines (SC) China China 18,432 20.0 min 2.7% 18,432
38 Eurowings (EW) Germany Germany 18,401 30.5 min 0.7% 18,401
39 Iberia (IB) Spain Spain 17,957 22.5 min 0.9% 17,957
40 WestJet (WS) Canada Canada 17,662 21.2 min 0.7% 17,662
41 Sichuan Airlines (3U) China China 17,507 20.6 min 4.0% 17,507
42 Spirit Airlines (NK) United States United States 17,266 25.9 min 0.7% 17,266
43 Saudi Arabian Airlines (SV) Saudi Arabia Saudi Arabia 17,004 23.4 min 0.9% 17,004
44 Transavia (HV) Netherlands Netherlands 16,406 26.8 min 0.1% 16,406
45 Emirates (EK) United Arab Emirates United Arab Emirates 16,296 29.3 min 0.2% 16,296
46 Ethiopian Airlines (ET) Ethiopia Ethiopia 16,214 38.2 min 0.9% 16,214
47 Spring Airlines (9C) China China 16,154 26.9 min 0.8% 16,154
48 Frontier Airlines (F9) United States United States 15,497 29.5 min 0.2% 15,497
49 Air New Zealand (NZ) New Zealand New Zealand 15,438 20.0 min 3.0% 15,438
50 Norwegian (DY) Norway Norway 15,120 19.6 min 0.6% 15,120
51 Jetstar Airways (JQ) Australia Australia 15,022 23.0 min 0.8% 15,022
52 Volaris (Y4) Mexico Mexico 14,759 17.2 min 0.2% 14,759
53 Jet2.com (LS) United Kingdom United Kingdom 14,445 36.6 min 0.0% 14,445
54 Virgin Australia (VA) Australia Australia 14,061 19.5 min 1.4% 14,061
55 VietJet Air (VJ) Vietnam Vietnam 14,000 26.9 min 0.0% 14,000
56 Air India Express (IX) India India 13,412 24.5 min 0.9% 13,412
57 TUI fly Germany (X3) Germany Germany 13,257 35.3 min 0.0% 13,257
58 AJet (VF) Singapore Singapore 13,234 19.2 min 0.1% 13,234
59 VivaAerobus (VB) Mexico Mexico 13,101 20.4 min 0.3% 13,101
60 Korean Air (KE) South Korea South Korea 12,719 30.5 min 0.2% 12,719
61 Batik Air (ID) Indonesia Indonesia 12,660 37.1 min 1.0% 12,660
62 Aeroméxico (AM) Mexico Mexico 12,388 24.2 min 0.0% 12,388
63 Cathay Pacific (CX) Hong Kong Hong Kong 12,065 39.1 min 5.8% 12,065
64 SunExpress (XQ) Turkey Turkey 11,890 28.8 min 0.1% 11,890
65 Malaysia Airlines (MH) Malaysia Malaysia 11,814 21.5 min 1.4% 11,814
66 ITA Airways (AZ) Italy Italy 11,607 27.3 min 2.2% 11,607
67 Widerøe (WF) Norway Norway 11,389 6.4 min 0.3% 11,389
68 CEBU Pacific Air (5J) Philippines Philippines 11,378 18.4 min 2.4% 11,378
69 Air Arabia (G9) United Arab Emirates United Arab Emirates 11,296 19.5 min 0.5% 11,296
70 Vietnam Airlines (VN) Vietnam Vietnam 11,286 20.5 min 0.0% 11,286
71 Copa Airlines (CM) Panama Panama 11,227 17.4 min 0.2% 11,227
72 Lion Airlines (JT) Indonesia Indonesia 11,147 57.5 min 0.1% 11,147
73 Austrian Airlines (OS) Austria Austria 10,839 19.7 min 0.6% 10,839
74 Tianjin Airlines (GS) China China 10,821 21.8 min 4.2% 10,821
75 LOT (LO) Poland Poland 10,758 29.4 min 0.3% 10,758
76 flydubai (FZ) United Arab Emirates United Arab Emirates 10,649 24.5 min 0.3% 10,649
77 Pobeda (DP) Russia Russia 10,643 33.4 min 0.2% 10,643
78 TAP Portugal (TP) Portugal Portugal 10,598 36.4 min 1.0% 10,598
79 Aer Lingus (EI) Ireland Ireland 10,417 32.1 min 1.2% 10,417
80 China Express Airlines (G5) China China 10,366 19.0 min 8.2% 10,366
81 Singapore Airlines (SQ) Singapore Singapore 10,365 29.4 min 0.8% 10,365
82 Rossiya (FV) Russia Russia 10,339 20.2 min 0.6% 10,339
83 Aegean Airlines (A3) Greece Greece 10,084 27.0 min 0.0% 10,084
84 Juneyao Airlines (HO) China China 9,818 28.9 min 2.2% 9,818
85 Cape Air (9K) United States United States 9,740 18.8 min 9.0% 9,740
86 flynas (XY) Saudi Arabia Saudi Arabia 9,653 19.7 min 0.5% 9,653
87 Shanghai Airlines (FM) China China 9,431 25.8 min 3.7% 9,431
88 Finnair (AY) Finland Finland 9,372 15.9 min 0.9% 9,372
89 Swiss (LX) Switzerland Switzerland 9,025 30.9 min 0.7% 9,025
90 Binter Canarias (NT) Spain Spain 9,020 13.8 min 0.0% 9,020
91 Aerolineas Argentinas (AR) Argentina Argentina 8,944 20.3 min 0.2% 8,944
92 Flex Flight (W2) Denmark Denmark 8,938 0.2 min 0.0% 8,938
93 Grant Aviation (GV) United States United States 8,737 2.3 min 0.0% 8,737
94 S7 Airlines (S7) Russia Russia 8,704 25.8 min 0.3% 8,704
95 Etihad Airways (EY) United Arab Emirates United Arab Emirates 8,559 28.7 min 0.4% 8,559
96 Chengdu Airlines (EU) China China 8,556 18.0 min 1.7% 8,556
97 Philippine Airlines (PR) Philippines Philippines 8,527 15.3 min 1.6% 8,527
98 Volotea (V7) Spain Spain 8,141 21.3 min 0.2% 8,141
99 Loong Airlines (GJ) China China 7,976 22.2 min 1.0% 7,976
100 Asiana Airlines (OZ) South Korea South Korea 7,813 26.2 min 0.1% 7,813

Cite this

The busiest airline in September 2025 was American Airlines (AA), with 179,579 flights. Source: Airportia, "Busiest airlines, September 2025" (1–30 September 2025), https://www.airportia.com/statistics/busiest-airlines/2025-09/, retrieved 3 November 2026.

Download the data (CSV)

Free to use, including commercially, under CC BY 4.0 : credit Airportia and link to this page. How to use our data. Press and data questions: contact@airportia.com.

How we calculate this

Which flights count
Every flight in Airportia's schedule data (from the Aviation Edge feed) that was scheduled to depart in the period, counted once: code-share listings of the same flight are left out. Days are UTC calendar days.
Departure delay
The actual departure time (or the latest reported estimate when no actual time came in) minus the scheduled departure time. A flight that left early or on time counts as 0 minutes. A flight with no reported departure time, cancelled flights included, also counts as 0, so where the feed is patchy the average is lower than the real one.
Average departure delay
The mean of those delays over all counted flights in the period. It is not the share of flights more than 15 minutes late (the usual on-time measure), and it is about departures, not arrivals.
Why there is no "most punctual" ranking
Because flights without a reported departure time count as 0 minutes, a low average can mean missing data rather than punctuality, and the stored figures do not say how many flights had a reported time. So we only rank the most delayed, and the delay rankings leave out every airport, airline or country whose average delay is exactly 0, which almost always means that no times were reported.
Cancellations
Flights with the status Cancelled, as a share of the counted flights in the period.
Airlines
Flights operated by the airline, wherever they depart from. Cargo airlines are not included. They have their own ranking, Busiest cargo airlines.
Period
A month combines three 10-day periods: days 1–10, 11–20 and the last ten days of the month, weighted by departures. In a 31-day month day 21 is not included; in February the second and third periods overlap by a day or two.
Minimum sample
Every airline with at least one flight in the period and reported departure times is included.

Coverage follows the schedule feed: some regional airports and airlines are missing or report few actual times. These are Airportia's own figures, not official statistics from airports, airlines or regulators.