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Flight number
Identifier for a specific flight or route

In the aviation industry, a flight number or flight designator is a code for an airline service consisting of two-character airline designator and a 1 to 4 digit number. For example, QF9 is a Qantas Airways service from Perth, Australia to London Heathrow. A service is called "direct" if it is covered by a single flight number, regardless of the number of stops or equipment changes. For example, QF1 flies from Sydney to Singapore to London on Qantas Airways. A given flight segment may have multiple flight numbers on different airlines under a code-sharing agreement. Strictly speaking, the flight number is just the numerical part, but it is commonly used for the entire flight designator.

The flight designator of the operating carrier of a commercial flight is used as a call sign. This is distinct from the aircraft's registration number, which identifies a specific airplane.

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Conventions

A number of conventions have been developed for defining flight numbers, although these vary widely from airline to airline, and are increasingly being modified.3 Eastbound and northbound flights are traditionally assigned even numbers, while westbound and southbound flights have odd numbers. Other airlines will use an odd number for an outbound flight and use the next even number for the reverse inbound flight. For destinations served by multiple flights per day, numbers tend to increase during the day. Hence, a flight from point A to point B might be flight 401 and the return flight from B to A would be 402, while the next pair of flights on the same route would usually be assigned codes 403 and 404.

Flight numbers of less than three digits are often assigned to long-haul or otherwise premium flights. For example, flight number 1 is often used for an airline's "flagship" service (see below for a 'List of flight number 1 by airlines'). However Cathay Pacific assigns flight numbers which are less than 100 for cargo flights.

Four-digit numbers in the range 3000 to 5999 typically represent regional affiliate flights, while numbers larger than 6000 are generally codeshare numbers for flights operated by different airlines or even railways.

Likewise, flight numbers larger than 9000 usually refer to ferry flights; these carry no passengers and are used to relocate aircraft to or from a maintenance base, or from one air travel market to another in order to start new commercial flights. Flight numbers starting with 8 are often used for charter flights, but it always depends on the commercial carrier's choice.

Flight numbering system in mainland China

The People's Republic of China uses a completely different system for assigning flight segments than most countries; prior to 1988 reformation, there was only one major airline in mainland China, CAAC, which initially used “the first digit of the flight number represents the base airport (1 North China, 2 Northwest China, 3 South China, 4 Southwest China, 5 East China, and 6 Northeast China) for domestic flights, and the end of the number has an odd digit for departures and an even digit for return trips”. In the 1980s, a second digit joined, indicating the destination of flights (many domestic flights of Air China and China Eastern from their base still follow this rule); one-digit and two-digit flight numbers are usually reserved for executive charters or special mission flights (e.g., the flight carrying the black boxes and American investigators of the China Eastern Airlines Flight 5735 in 2022 used flight numbers CA79 and CA80). With the privatization and booming of China's civil aviation, in 2004 the CAAC issued a system for allocating flight numbers across the country, with Air China allocated 1XXX, 4XXX, and 9XX, China Eastern 2XXX and 5XXX, China Southern 3XXX and 6XXX, Hainan Airlines 7XXX, Sichuan and Xiamen 8XXX, and stipulating that Chinese airlines should not use the same flight numbers each other. However, this rule is no longer strictly enforced, as the allocated numbers have become shortage of use. As a result, there are three special cases in China: 1. Flight number 9XXX may be a regular flight, while smaller number like 500 or 2000 might be used on ferry flights or codeshare ones. 2. Flagship flights do not use one-digit or two-digit flight numbers, and may even be four-digit flight numbers. 3. Flight numbers in the event of an aviation accident will not be retired, as seen on Air China Flight 129 which is still active as of January 2025 (albeit using a different type of aircraft). Still, there are exceptions, as with the case of the aforementioned China Eastern Airlines Flight 5735.

Codeshare

Main article: Codeshare agreement

In a codeshare, airlines share their aircraft with others, resulting in the flight having more than one flight number on the same sector, and either the same or different flight numbers on joined sectors.

As an example, QF8412 flies from Dubai to Sydney, but it is codeshared with and operated as EK412. Another example is QF3920, which is a flight from Lima, Peru to Santiago, Chile that is also codeshared with LATAM 523.

List of flight number 1 by airline

Most flights are non-stop from A to B, and few are from A to B then to C (both A-B and B-C have flight number 1). Aircraft type may change due to operation need or unforeseen circumstance.

AirlineIATA Flight NoICAO Flight NoFromToThen to (if applicable)Aircraft Type
AeroméxicoAM1AMX145 Mexico City MadridBoeing 787
Air CanadaAC1ACA167 Toronto–Pearson Tokyo–HanedaBoeing 777-300ER
Air Canada ExpressQK1JZA18 Montreal OttawaBombardier CRJ900
Air FranceAF1AFR19 New York–JFK Paris–CDGBoeing 777-200 / 777-300ER
Air JapanNQ1AJX11011 Tokyo–Narita Bangkok–SuvarnabhumiBoeing 787-8
Air MacauNX1AMU11213 Beijing–Capital MacauAirbus A321
Air New ZealandNZ1ANZ114 New York–JFK AucklandBoeing 787-9
Air Tahiti NuiTN1THT11516 Los Angeles PapeeteBoeing 787-9
Alaska AirlinesAS1ASA11718 Washington–Reagan SeattleBoeing 737-800
American AirlinesAA1AAL11920 New York–JFK Los AngelesAirbus A321
Cape Air9K1KAP12122 Martha's Vineyard NantucketCessna 402
Delta Air LinesDL1DAL12324 London–HeathrowBoeing 767-400ER
El AlLY1ELY12526 Tel Aviv New York–JFKBoeing 787-9
EmiratesEK1UAE12728 Dubai London–HeathrowAirbus A380-800
Etihad AirwaysEY1ETD12930 Abu Dhabi New York–JFKAirbus A380-800 / Boeing 787-9
FedEx ExpressFX1FDX131 London–Stansted MemphisBoeing 777F
FinnairAY1FIN132 Helsinki Los AngelesAirbus A350-900
FlydubaiFZ1FDB1 3334 Dubai DohaBoeing 737-MAX 8
Hawaiian AirlinesHA1HAL13536 Los Angeles HonoluluAirbus A330-200
Japan AirlinesJL1JAL13738 San Francisco Tokyo–HanedaBoeing 777-300ER
Japan Transocean AirNU1JTA139 Osaka−Kansai Okinawa−NahaBoeing 737-800
JetBlue AirwaysB61JBU14041 New York–JFK Fort LauderdaleAirbus A321-200 / Airbus A320-200
JetstarJQ1JST14243 Melbourne HonoluluBoeing 787-8
Jin AirLJ1JNA1444546 Seoul–Incheon Bangkok–SuvarnabhumiBoeing 737-800
Korean Air LinesKE1KAL14748 Tokyo–Narita HonoluluBoeing 777-200ER
LATAM ChileLA1LAN14950 Santiago Puerto NatalesAirbus A320
LOT Polish AirlinesLO1LOT15152 Warsaw Chicago–O'HareBoeing 787-8
LufthansaLH1DLH15354 Hamburg FrankfurtAirbus A321 / A320neo
Malaysia AirlinesMH1MAS15556 London–Heathrow Kuala LumpurAirbus A350-900
Nauru AirlinesON1RON15758 Nauru BrisbaneBoeing 737-300
QantasQF1QFA15960 Sydney Singapore London–HeathrowAirbus A380-800
Qatar AirwaysQR1QTR16162 Doha London–HeathrowBoeing 777-200LR / 777-300ER / Airbus A350-900
Scandinavian AirlinesSK1SAS16364 Lulea StockholmAirbus A320neo65
Skymark AirlinesBC1SKY166 Tokyo–Haneda FukuokaBoeing 737-800
Southwest AirlinesWN1SWA16768 Dallas–Love Field Houston–Hobby Corpus ChristiBoeing 737-700 / 737-800 / 737-MAX 8
SpiceJetSG1SEJ16970 Chennai ColomboBoeing 737-800
Spirit AirlinesNK1NKS17172 Fort Lauderdale Chicago–O'HareAirbus A321 / Airbus A321neo
Starlux AirlinesJX1SJX17374 Los Angeles Taipei–TaoyuanAirbus A350-900
Turkish AirlinesTK1THY17576 Istanbul New York–JFKBoeing 777-300ER
United AirlinesUA1UAL17778 San Francisco SingaporeBoeing 787-9
Zipair TokyoZG1TZP17980 Honolulu Tokyo–NaritaBoeing 787-8

A notable former flight number 1 was British Airways flight BA1, operated by the Concorde between London Heathrow and New York's John F. Kennedy airport. After the retirement of Concorde in 2003 the flight number was retired with it, however in 2009 it was given to the all business class A318 flight between London City Airport and New York JFK via Shannon in Ireland. This route ceased operation in 2020 due to the COVID-19 pandemic, and British Airways has since announced it will not be restarting the service.

Flight number changes

Flight numbers are often taken out of use after a crash or a serious incident. Examples include:

  • Following the disappearance of Malaysia Airlines Flight 370, the airline changed the flight number for subsequent flights following the same route to MH 318.81
  • After the crash of Air France Flight 447 over the Atlantic Ocean, a regular scheduled flight from Rio de Janeiro to Paris, was changed to Air France Flight 445.82
  • Following the crash of Asiana Airlines Flight 214 in July 2013, Asiana change the numbered flight pairs from Asiana Airlines 213/214 to 211/212.83

Flight number conservation

Airline mega mergers, in markets such as the United States, have made it necessary to break conventional flight numbering schemes. Organizations such as IATA, ICAO, ARC, as well as CRS systems and the FAA's ATC systems limit flight numbers to four digits (0001 to 9999). The pool of available flight numbers has been outstripped by demand for them by emergent mega-carriers. As such, some carriers use the same flight number for back-and-forth flights (e.g., DCA-PBI-DCA), or in other cases carriers have assigned a single flight number to a multi-leg flight (e.g., ICT-DAL-HOU-MDW-OMA-DEN-ABQ-LAS-BDL).84

Flight designator

Although 'flight number' is the term used colloquially, the official term as defined in the Standard Schedules Information Manual (SSIM) published annually by the International Air Transport Association (IATA) Schedules Information Standards Committee (SISC), is flight designator. Officially the term 'flight number' refers to the numeric part (up to four digits) of a flight code. For example, in the flight codes QF103 and AF296Q, "103" and "296" are flight numbers. Even within the airline and airport industry, it is common to use the colloquial term rather than the official term.

Spacecraft

Flight numbers are also sometimes used for spacecraft, though a flight number for an expendable rocket (say, Ariane 5 Flight 501) might more reasonably be called the serial number of the vehicle used, since an expendable rocket can only be launched once. Space Shuttle missions used numbers with the STS prefix, for example, STS-93. SpaceX uses sequential numbers for flights of reused boosters. As an example, Crew-2 used booster B1061.2 (the second flight of booster B1061).

See also

References

  1. IATA Passenger Glossary of Terms (15 June 2018) [www.iata.org/whatwedo/passenger/.../IATA-Passenger-Glossary-of-Terms.xlsx] ↩

  2. ICAO, "Glossary" [1] /wiki/ICAO ↩

  3. Peter Newell, "Flight Numbering Alternatives", Ascend: A Magazine for Airline Executives, issue 2, 2014 [2] http://www.ascendforairlines.com/2014-issue-no-2/flight-numbering-alternatives ↩

  4. "AeroMéxico (AM) #1 ✈ FlightAware". FlightAware. Retrieved 2018-01-12. https://flightaware.com/live/flight/AMX1 ↩

  5. "AM1 schedule. (Aeromexico flight: Mexico City -> Madrid)". info.flightmapper.net. Retrieved 2024-03-11. https://info.flightmapper.net/flight/Aeromexico_AM_1 ↩

  6. "Air Canada (AC) #1 ✈ FlightAware". FlightAware. Retrieved 2018-01-12. https://flightaware.com/live/flight/ACA1 ↩

  7. "AC1 schedule. (Air Canada flight: Toronto -> Tokyo)". info.flightmapper.net. Retrieved 2024-03-11. https://info.flightmapper.net/flight/Air_Canada_AC_1 ↩

  8. "QK1 (JZA1) Jazz Flight Tracking and History 14-Feb-2024 (CYUL-CYOW)". FlightAware. Retrieved 2024-03-11. http://www.flightaware.com/live/flight/JZA1/history/20240214/1323Z/CYUL/CYOW ↩

  9. "AF1 schedule. (Air France flight: New York -> Paris)". info.flightmapper.net. Retrieved 2024-03-11. https://info.flightmapper.net/flight/Air_France_AF_1 ↩

  10. "Air Japan (NQ)#1 ✈ FlightAware". FlightAware. Retrieved 2024-03-19. https://flightaware.com/live/flight/AJX1 ↩

  11. "Air Japan Schedules Bangkok Launch in Feb 2024". AeroRoutes. Retrieved 2024-03-21. https://www.aeroroutes.com/eng/230802-nqfeb24bkk ↩

  12. "Air Macau (NX)#1 ✈ FlightAware". FlightAware. Retrieved 2024-03-19. https://flightaware.com/live/flight/AMU1 ↩

  13. "NX1 schedule. (Air Macau flight: Beijing -> Macau)". info.flightmapper.net. Retrieved 2024-03-21. https://info.flightmapper.net/flight/Air_Macau_NX_1 ↩

  14. "NZ1 schedule. (Air New Zealand flight: New York -> Auckland)". info.flightmapper.net. Retrieved 2024-03-11. https://info.flightmapper.net/flight/Air_New_Zealand_NZ_1 ↩

  15. "Air Tahiti Nui (TN) #1 ✈ FlightAware". FlightAware. Retrieved 2018-01-12. https://flightaware.com/live/flight/THT1 ↩

  16. "TN2 schedule. (Air Tahiti Nui flight: Tahiti -> Los Angeles)". info.flightmapper.net. Retrieved 2024-03-11. https://info.flightmapper.net/flight/Air_Tahiti_Nui_TN_2 ↩

  17. "Alaska Airlines (AS) #1 ✈ FlightAware". FlightAware. Retrieved 2018-01-12. https://flightaware.com/live/flight/ASA1 ↩

  18. "AS1 schedule. (Alaska Airlines flight: Washington -> Seattle)". info.flightmapper.net. Retrieved 2024-03-11. https://info.flightmapper.net/flight/Alaska_Airlines_AS_1 ↩

  19. "American Airlines (AA) #1 ✈ FlightAware". FlightAware. Retrieved 2018-01-12. https://flightaware.com/live/flight/AAL1 ↩

  20. "AA1 schedule. (American Airlines flight: New York -> Los Angeles)". info.flightmapper.net. Retrieved 2024-03-11. https://info.flightmapper.net/flight/American_Airlines_AA_1 ↩

  21. "Cape Air (9K) #1 ✈ FlightAware". FlightAware. Retrieved 2024-03-18. https://flightaware.com/live/flight/KAP1 ↩

  22. "9K1 schedule. (Cape Air flight: New York -> Nantucket via Martha's Vineyard)". info.flightmapper.net. Retrieved 2024-03-19. https://info.flightmapper.net/flight/Cape_Air_9K_1 ↩

  23. "Delta (DL) #1 ✈ FlightAware". FlightAware. Retrieved 2019-02-07. https://flightaware.com/live/flight/DAL1 ↩

  24. "DL1 schedule. (Delta Air Lines flight: New York -> London)". info.flightmapper.net. Retrieved 2024-03-11. https://info.flightmapper.net/flight/Delta_Air_Lines_DL_1 ↩

  25. "El Al (LY) #1 ✈ FlightAware". FlightAware. Retrieved 2018-01-12. https://flightaware.com/live/flight/ELY1 ↩

  26. "LY1 schedule. (EL AL flight: Tel Aviv-Yafo -> New York)". info.flightmapper.net. Retrieved 2024-03-11. https://info.flightmapper.net/flight/EL_AL_LY_1 ↩

  27. "Emirates (EK) #1 ✈ FlightAware". FlightAware. Retrieved 2018-01-12. https://flightaware.com/live/flight/UAE1 ↩

  28. "EK1 schedule. (Emirates flight: Dubai -> London)". info.flightmapper.net. Retrieved 2024-03-11. https://info.flightmapper.net/flight/Emirates_EK_1 ↩

  29. "Etihad Airways (EY) #1 ✈ FlightAware". FlightAware. Retrieved 2018-01-12. https://flightaware.com/live/flight/ETD1 ↩

  30. "Etihad Designates Flight Number 1 New York Service From April 2024". AeroRoutes. Retrieved 2024-03-11. https://www.aeroroutes.com/eng/240309-eyns24jfk ↩

  31. "FX1 (FDX1) FedEx Flight Tracking and History 09-Mar-2024 (STN / EGSS-KMEM)". FlightAware. Retrieved 2024-03-11. http://www.flightaware.com/live/flight/FDX1/history/20240309/2354Z/EGSS/KMEM ↩

  32. "AY1 schedule. (Finnair flight: Helsinki -> Los Angeles)". info.flightmapper.net. Retrieved 2024-03-11. https://info.flightmapper.net/flight/Finnair_AY_1 ↩

  33. "flydubai (FZ) #1 ✈ FlightAware". FlightAware. Retrieved 2024-03-18. https://flightaware.com/live/flight/FDB1 ↩

  34. "FZ1 schedule. (flydubai flight: Dubai -> Doha)". info.flightmapper.net. Retrieved 2024-03-19. https://info.flightmapper.net/flight/flydubai_FZ_1 ↩

  35. "Hawaiian Airlines (HA) #1 ✈ FlightAware". FlightAware. Retrieved 2018-01-12. https://flightaware.com/live/flight/HAL1 ↩

  36. "HA1 schedule. (Hawaiian Airlines flight: Los Angeles -> Honolulu)". info.flightmapper.net. Retrieved 2024-03-11. https://info.flightmapper.net/flight/Hawaiian_Airlines_HA_1 ↩

  37. "Japan Airlines (JL) #1 ✈ FlightAware". FlightAware. Retrieved 2018-01-12. https://flightaware.com/live/flight/JAL1 ↩

  38. "JL1 schedule. (JAL flight: San Francisco -> Tokyo)". info.flightmapper.net. Retrieved 2024-03-11. https://info.flightmapper.net/flight/JAL_JL_1 ↩

  39. "NU1 schedule. (Japan Transocean Air flight: Osaka -> Okinawa)". info.flightmapper.net. Retrieved 2024-03-11. https://info.flightmapper.net/flight/Japan_Transocean_Air_NU_1 ↩

  40. "JetBlue (B6) #1 ✈ FlightAware". FlightAware. Retrieved 2018-01-12. https://flightaware.com/live/flight/JBU1 ↩

  41. "B61 schedule. (JetBlue Airways flight: New York -> Fort Lauderdale)". info.flightmapper.net. Retrieved 2024-03-11. https://info.flightmapper.net/flight/JetBlue_Airways_B6_1 ↩

  42. "Jetstar (JQ)#1 ✈ FlightAware". FlightAware. Retrieved 2024-03-19. https://flightaware.com/live/flight/JST1 ↩

  43. "JQ1 schedule. (Jetstar Airways flight: Melbourne -> Honolulu)". info.flightmapper.net. Retrieved 2024-03-21. https://info.flightmapper.net/flight/Jetstar_Airways_JQ_1 ↩

  44. Note Jin Air operates ICN-BKK as LJ1/2 in the Summer months (Mar-Oct) and as LJ3/4 in the winter months ↩

  45. "Jin Air (LJ) #1 ✈ FlightAware". FlightAware. Retrieved 2019-08-05. https://flightaware.com/live/flight/JNA1 ↩

  46. "Jin Air - All Nonstop Flights from ICN to BKK". FlightsFrom.com. Retrieved 19 Mar 2024. https://www.flightsfrom.com/ICN-BKK#LJ ↩

  47. "Korean Air Lines Co. (KE) #1 ✈ FlightAware". FlightAware. Retrieved 2018-01-12. https://flightaware.com/live/flight/KAL1 ↩

  48. "KE1 schedule. (Korean Air Lines flight: Seoul -> Honolulu via Tokyo)". info.flightmapper.net. Retrieved 2024-03-11. https://info.flightmapper.net/flight/Korean_Air_Lines_KE_1 ↩

  49. "LAN Airlines (LA) #1 ✈ FlightAware". FlightAware. Retrieved 2018-01-12. https://flightaware.com/live/flight/LAN1 ↩

  50. "LA1 schedule. (LATAM Airlines Group flight: Santiago -> Puerto Natales)". info.flightmapper.net. Retrieved 2024-03-11. https://info.flightmapper.net/flight/LATAM_Airlines_Group_LA_1 ↩

  51. "Lot - Polskie Linie Lotnicze (LO) #1 ✈ FlightAware". FlightAware. Retrieved 2018-01-12. https://flightaware.com/live/flight/LOT1 ↩

  52. "LO1 schedule. (LOT Polish Airlines flight: Warsaw -> Chicago)". info.flightmapper.net. Retrieved 2024-03-11. https://info.flightmapper.net/flight/LOT_Polish_Airlines_LO_1 ↩

  53. "Lufthansa (LH) #1 ✈ FlightAware". FlightAware. Retrieved 2018-01-12. https://flightaware.com/live/flight/DLH1 ↩

  54. "LH1 schedule. (Lufthansa flight: Hamburg -> Frankfurt)". info.flightmapper.net. Retrieved 2024-03-11. https://info.flightmapper.net/flight/Lufthansa_LH_1 ↩

  55. "Malaysia Airlines (MH) #1 ✈ FlightAware". FlightAware. Retrieved 2018-01-12. https://flightaware.com/live/flight/MAS1 ↩

  56. "MH1 schedule. (Malaysia Airlines flight: London -> Kuala Lumpur)". info.flightmapper.net. Retrieved 2024-03-11. https://info.flightmapper.net/flight/Malaysia_Airlines_MH_1 ↩

  57. "Nauru Airlines (ON)#1 ✈ FlightAware". FlightAware. Retrieved 2024-03-19. https://flightaware.com/live/flight/RON1 ↩

  58. "ON1 schedule. (Nauru Airlines flight: Nauru Island -> Brisbane)". info.flightmapper.net. Retrieved 2024-03-21. https://info.flightmapper.net/flight/Nauru_Airlines_ON_1 ↩

  59. "Qantas (QF) #1 ✈ FlightAware". FlightAware. Retrieved 2018-01-12. https://flightaware.com/live/flight/QFA1 ↩

  60. "QF1 schedule. (Qantas flight: Sydney -> London via Singapore)". info.flightmapper.net. Retrieved 2024-03-11. https://info.flightmapper.net/flight/Qantas_QF_1 ↩

  61. "Qatar Airways (QR) #1 ✈ FlightAware". FlightAware. Retrieved 2018-01-12. https://flightaware.com/live/flight/QTR1 ↩

  62. "QR1 schedule. (Qatar Airways flight: Doha -> London)". info.flightmapper.net. Retrieved 2024-03-11. https://info.flightmapper.net/flight/Qatar_Airways_QR_1 ↩

  63. "SAS (SK) #1 ✈ FlightAware". FlightAware. Retrieved 2018-01-12. https://flightaware.com/live/flight/SAS1 ↩

  64. "SK1 schedule. (SAS flight: Lulea -> Stockholm)". info.flightmapper.net. Retrieved 2024-03-11. https://info.flightmapper.net/flight/SAS_SK_1 ↩

  65. "Flight history for SAS flight SK1". Flightradar24. Retrieved 10 November 2020. https://www.flightradar24.com/data/flights/sk1 ↩

  66. "BC1 schedule. (Skymark Airlines flight: Tokyo -> Fukuoka)". info.flightmapper.net. Retrieved 2024-03-11. https://info.flightmapper.net/flight/Skymark_Airlines_BC_1 ↩

  67. "Southwest (WN) #1 ✈ FlightAware". FlightAware. Retrieved 2018-01-12. https://flightaware.com/live/flight/SWA1 ↩

  68. "Southwest Airlines flight WN 1 schedule". info.flightmapper.net. Retrieved 2024-03-11. https://info.flightmapper.net/flight/Southwest_Airlines_WN_1 ↩

  69. "SpiceJet (SG) #1 ✈ FlightAware". FlightAware. Retrieved 2019-08-05. https://flightaware.com/live/flight/SEJ1 ↩

  70. "SG1 schedule. (SpiceJet flight: Chennai -> Colombo)". info.flightmapper.net. Retrieved 2024-03-11. https://info.flightmapper.net/flight/SpiceJet_SG_1 ↩

  71. "Spirit Airlines 1". FlightAware. Retrieved 10 February 2020. https://flightaware.com/live/flight/NKS1 ↩

  72. "NK1 schedule. (Spirit Airlines flight: Fort Lauderdale -> Chicago)". info.flightmapper.net. Retrieved 2024-03-11. https://info.flightmapper.net/flight/Spirit_Airlines_NK_1 ↩

  73. "Starlux Airlines 1". FlightAware. Retrieved 21 May 2023. https://flightaware.com/live/flight/SJX1 ↩

  74. "JX1 schedule. (Starlux Airlines flight: Los Angeles -> Taipei)". info.flightmapper.net. Retrieved 2024-03-11. https://info.flightmapper.net/flight/Starlux_Airlines_JX_1 ↩

  75. "Turkish Airlines (TK) #1 ✈ FlightAware". FlightAware. Retrieved 2018-01-12. https://flightaware.com/live/flight/THY1 ↩

  76. "TK1 schedule. (Turkish Airlines flight: Istanbul -> New York)". info.flightmapper.net. Retrieved 2024-03-11. https://info.flightmapper.net/flight/Turkish_Airlines_TK_1 ↩

  77. "United (UA) #1 ✈ FlightAware". FlightAware. Retrieved 2018-01-12. https://flightaware.com/live/flight/UAL1 ↩

  78. "UA1 schedule. (United Airlines flight: San Francisco -> Singapore)". info.flightmapper.net. Retrieved 2024-03-11. https://info.flightmapper.net/flight/United_Airlines_UA_1 ↩

  79. "Zipair Tokyo (ZG)#1 ✈ FlightAware". FlightAware. Retrieved 2024-03-19. https://flightaware.com/live/flight/TZP1 ↩

  80. "ZG1 schedule. (ZIPAIR Tokyo Inc. flight: Honolulu -> Tokyo)". info.flightmapper.net. Retrieved 2024-03-21. https://info.flightmapper.net/flight/ZIPAIR_Tokyo_Inc__ZG_1 ↩

  81. "Malaysia Airlines to Retire Flight Number 370 - Southeast Asia Real Time - WSJ". Wall Street Journal. 2014-03-13. Archived from the original on 2014-03-14. Retrieved 2024-03-12. https://web.archive.org/web/20140314103628/https://blogs.wsj.com/searealtime/2014/03/13/airline-to-retire-call-sign-370/ ↩

  82. "AF 445 statt AF 447: Air France ändert Flugnummer auf der tragischen Unglücksroute" [AF 445 instead of AF 447: Air France changes the flight number of the route that had the tragic accident]. Baseler Zeitung (in German). 8 June 2009. Archived from the original on 12 June 2009. Retrieved 8 June 2009. http://bazonline.ch/panorama/vermischtes/AF-445-statt-AF-447--Air-France-aendert-Flugnummer-auf-der-tragischen-Ungluecksroute/story/10901518 ↩

  83. Mather, Kate (2013-08-06). "Asiana Airlines to change number of Seoul-S.F. flight after crash". Los Angeles Times. Retrieved 2024-03-12. https://www.latimes.com/local/lanow/la-me-ln-asiana-number-change-20130806-story.html ↩

  84. "The Science behind Flight Numbers". southwestaircommunity.com. June 9, 2015. Retrieved March 3, 2019. https://community.southwest.com/t5/Southwest-Stories/The-Science-behind-Flight-Numbers/ba-p/42760 ↩