Flight 1 or 101.

AA 1 JFK LAX
CA 101 PEK HKG
CI 1 TPE HNL
JL 1 HND SFO
UA 1 SFO SIN

QF1 - SYD-DXB-LHR
PR101 - MNL-HNL
UA1 - SFO-SIN
MH1 - LHR-KUL
SQ1 - SFO-HKG-SIN
Some of the few I can think of.

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AC 1 YYZ-NRT
AS 1 DCA-SEA
BA 1 LCY-SNN-JFK
B6 1 JFK-FLL
DL 1 LHR-JFK
NZ 1 LHR-LAX-AKL
VS 1 LHR-EWR
QF 1 SYD-DXB-LHR
SQ 1 HKG-SIN
WN 1 DAL-HOU-SAN (at this point)

SFO sees a good amount of "Flight 1"-

UA 1 - SFO-SIN
SQ 1 - SFO-HKG-SIN
JL 1 - SFO-HND
VX 1 - SFO-DCA (now operated as AS 1001)

Which airport gets the most number of "Flight 1"? I would guess either LHR or JFK

DL1 LHR-JFK

Kept the legacy flight number from the Pan Am Round-the-World Service

EK1 is DXB-LHR

Here's a list of all the flight 1s I could find operating in January (though I'll admit I removed some obscure operators). If the flight has multiple segments, they are broken out on to different lines (for example, there are two entries for QF1 below).

AA: Flight 1 - JFK-LAX
AM: Flight 1 - MEX-MAD
AS: Flight 1 - DCA-SEA
B6: Flight 1 - JFK-FLL
BA: Flight 1 - LCY-SNN
BA: Flight 1 - SNN-JFK
BC: Flight 1 - HND-FUK
BG: Flight 1 - DAC-LHR
CI: Flight 1 - HNL-TPE
D7: Flight 1 - KIX-HNL
D7: Flight 1 - KUL-KIX
DJ: Flight 1 - NGO-CTS
DL: Flight 1 - LHR-JFK
EK: Flight 1 - DXB-LHR
EY: Flight 1 - AUH-FRA
H2: Flight 1 - PMC-PUQ
H2: Flight 1 - SCL-PMC
HA: Flight 1 - LAX-HNL
JL: Flight 1 - SFO-HND
JQ: Flight 1 - MEL-HNL
KE: Flight 1 - ICN-NRT
KE: Flight 1 - NRT-HNL
LA: Flight 1 - SCL-PNT
LY: Flight 1 - TLV-JFK
MH: Flight 1 - LHR-KUL
MM: Flight 1 - KIX-ICN
NH: Flight 1 - IAD-NRT
NU: Flight 1 - KIX-OKA
NX: Flight 1 - PEK-MFM
NZ: Flight 1 - LAX-AKL
NZ: Flight 1 - LHR-LAX
ON: Flight 1 - HIR-BNE
ON: Flight 1 - INU-BNE
ON: Flight 1 - INU-HIR
OV: Flight 1 - MCT-SLL
PU: Flight 1 - BCN-MAD
PX: Flight 1 - POM-SYD
QF: Flight 1 - DXB-LHR
QF: Flight 1 - SYD-DXB
QR: Flight 1 - DOH-LHR
S7: Flight 1 - DME-GOJ
SG: Flight 1 - MAA-CMB
SK: Flight 1 - LLA-ARN
SQ: Flight 1 - HKG-SIN
SQ: Flight 1 - SFO-HKG
TF: Flight 1 - GOT-BMA
TK: Flight 1 - IST-JFK
TN: Flight 1 - LAX-PPT
UA: Flight 1 - SFO-SIN
UB: Flight 1 - RGN-SIN
VA: Flight 1 - SYD-LAX
VS: Flight 1 - LHR-EWR
WN: Flight 1 - DAL-HOU
WN: Flight 1 - HOU-SAN
WS: Flight 1 - YYC-LGW

KL
LHR-AMS Flight 1000

CX: 101 HKG-SYD (I don't think CX used any number below that)

Not Flight 1 or 101:
BR: 5 LAX-TPE (Their flight 1 used to run that route also). BR101 is 3/wk FUK-TPE, so nothing special about that at all.

Honorable mention: JL101 HND-ITM. They have a Flight 1 (SFO-HND, as stated in a few posts back), but 101 is used for their "flagship" domestic route between Tokyo and Osaka.

Not sure if this is the "lowest" number:
CZ: 300 JFK-CAN

No longer available, surely there should be an honourable mention for the daddy of them all....

******** Pan Am Clipper 1 JFK-JFK ********

(via SFO-HKG-BKK-DEL-THR-BEY-IST-FRA-LHR)



Also known as the "Terrorist Express" (....Istanbul, Beirut, Tehran, Delhi) , amazingly this service originated with Lockheed Constellations back in 1947, although personally I believe it had it's finest hour during the 70's with the advent of the 747.

There is some debate as to whether it always qualified as a true "around-the world" service because Pan Am did not fly from JFK to LAX/SFO before deregulation because no eastbound passengers could board in California, even if their destination was Europe or beyond, and no westbound passengers could board at JFK even if their destination was Tokyo.

"Clipper 2" did it the hard way, flying eastbound all the way against various prevailing winds.

Somewhat surprisingly (in this internet era) , I had difficulty nailing down the exact details other than this 13 year old thread.
viewtopic.php?t=358363

While not a Flight 1, Lufthansa's FRA-JFK daytime flight has the lowest flight number for any intercontinental flight. The region also has the lowest 6 outbound flight numbers.

CX100 SYD-HKG

Cathay use 1-99 for cargo flights, so 100 is their first passenger flight number.

Ryanair FR102 Shannon - London Stansted
Wizzair W6 1001 Katowice - London Luton
EasyJet U2 1001 Basel - Nice

Overthecascades wrote:

Flight 1 or 101.

Pushing the boundaries a little bit...
FDX1 STN-MEM
UPS1 HKG-CGN

Another poster referenced LH, but omitted to explain that unlike everybody else, they seem to favour even numbers for the outbound service, and odds for the return.
Hence..
LH1 does not exist
LH2 & LH3 are FRA-HAM & vice versa.
And instead of LH101...
LH100 & LH 101 are FRA-MUC & vice versa


And then there are these two, that are neither "1" nor "101", so they defy description. (and I'm not even 100% sure it's their lowest)
UX23 MAD-ASU (Air Europa)
BR5 LAX-TPE (EVA Air)

zakuivcustom wrote:

CX: 101 HKG-SYD (I don't think CX used any number below that)

Not Flight 1 or 101:
BR: 5 LAX-TPE (Their flight 1 used to run that route also). BR101 is 3/wk FUK-TPE, so nothing special about that at all.

Honorable mention: JL101 HND-ITM. They have a Flight 1 (SFO-HND, as stated in a few posts back), but 101 is used for their "flagship" domestic route between Tokyo and Osaka.

Not sure if this is the "lowest" number:
CZ: 300 JFK-CAN

For CZ it is. It used to be assigned “3xx” whilst CA is assigned “1xx” and MU “5xx”.

G4100 IWA-CID

Overthecascades wrote:

zakuivcustom wrote:

CX: 101 HKG-SYD (I don't think CX used any number below that)

Not Flight 1 or 101:
BR: 5 LAX-TPE (Their flight 1 used to run that route also). BR101 is 3/wk FUK-TPE, so nothing special about that at all.

Honorable mention: JL101 HND-ITM. They have a Flight 1 (SFO-HND, as stated in a few posts back), but 101 is used for their "flagship" domestic route between Tokyo and Osaka.

Not sure if this is the "lowest" number:
CZ: 300 JFK-CAN

For CZ it is. It used to be assigned “3xx” whilst CA is assigned “1xx” and MU “5xx”.

Umm...so I guess for MU, MU501 (PVG-HKG) is the lowest number? Funny how both CA (101, PEK-HKG) and MU (501, PVG-HKG) used their "lowest" number on their HKG flights

A few other:
South Korean LCCs:
LJ (Jin Air): Flight 1 is ICN->BKK. Although looks like it's seasonal.
7C (Jeju Air): 101 GMP->CJU
TW (T'way Air, NOT TWA): 101 ICN->BKK
ZE (Eastar Jet): 201 GMP->CJU

Japanese LCCs:
JW (Vanilla Air): 101 NRT->TPE
GK (Jetstar Japan): 11 NRT->TPE (100/101 is seasonal NRT<->CTS that leaves early in the morning)

There's also HX15/16 HKG-OOL-CNS-HKG being its "lowest" number flight. Their numbering are kind of arbitary, though.
For HU, I believe it's Flight 401 SYX->UTP? It's not even daily, though. Most of their flight number are 7xxx range (Domestic). For example, HU7001 is HAK->CAN, which make much more sense as HU is still "Hainan" Airline (Even though they pretty much operated everywhere )

United 101 is IAH-SYD.

zakuivcustom wrote:

Overthecascades wrote:

zakuivcustom wrote:

CX: 101 HKG-SYD (I don't think CX used any number below that)

Not Flight 1 or 101:
BR: 5 LAX-TPE (Their flight 1 used to run that route also). BR101 is 3/wk FUK-TPE, so nothing special about that at all.

Honorable mention: JL101 HND-ITM. They have a Flight 1 (SFO-HND, as stated in a few posts back), but 101 is used for their "flagship" domestic route between Tokyo and Osaka.

Not sure if this is the "lowest" number:
CZ: 300 JFK-CAN

For CZ it is. It used to be assigned “3xx” whilst CA is assigned “1xx” and MU “5xx”.

Umm...so I guess for MU, MU501 (PVG-HKG) is the lowest number? Funny how both CA (101, PEK-HKG) and MU (501, PVG-HKG) used their "lowest" number on their HKG flights

A few other:
South Korean LCCs:
LJ (Jin Air): Flight 1 is ICN->BKK. Although looks like it's seasonal.
7C (Jeju Air): 101 GMP->CJU
TW (T'way Air, NOT TWA): 101 ICN->BKK
ZE (Eastar Jet): 201 GMP->CJU

Japanese LCCs:
JW (Vanilla Air): 101 NRT->TPE
GK (Jetstar Japan): 11 NRT->TPE (100/101 is seasonal NRT<->CTS that leaves early in the morning)

There's also HX15/16 HKG-OOL-CNS-HKG being its "lowest" number flight. Their numbering are kind of arbitary, though.
For HU, I believe it's Flight 401 SYX->UTP? It's not even daily, though. Most of their flight number are 7xxx range (Domestic). For example, HU7001 is HAK->CAN, which make much more sense as HU is still "Hainan" Airline (Even though they pretty much operated everywhere )

Good call. I would think for Chinese airlines it’s hard to have same flight numbers amongst different carriers

NW 1 LAX NRT

Overthecascades wrote:

zakuivcustom wrote:

Overthecascades wrote:

For CZ it is. It used to be assigned “3xx” whilst CA is assigned “1xx” and MU “5xx”.

Umm...so I guess for MU, MU501 (PVG-HKG) is the lowest number? Funny how both CA (101, PEK-HKG) and MU (501, PVG-HKG) used their "lowest" number on their HKG flights

A few other:
South Korean LCCs:
LJ (Jin Air): Flight 1 is ICN->BKK. Although looks like it's seasonal.
7C (Jeju Air): 101 GMP->CJU
TW (T'way Air, NOT TWA): 101 ICN->BKK
ZE (Eastar Jet): 201 GMP->CJU

Japanese LCCs:
JW (Vanilla Air): 101 NRT->TPE
GK (Jetstar Japan): 11 NRT->TPE (100/101 is seasonal NRT<->CTS that leaves early in the morning)

There's also HX15/16 HKG-OOL-CNS-HKG being its "lowest" number flight. Their numbering are kind of arbitary, though.
For HU, I believe it's Flight 401 SYX->UTP? It's not even daily, though. Most of their flight number are 7xxx range (Domestic). For example, HU7001 is HAK->CAN, which make much more sense as HU is still "Hainan" Airline (Even though they pretty much operated everywhere )

Good call. I would think for Chinese airlines it’s hard to have same flight numbers amongst different carriers

I guess the rule extend to 4-digit flight number also? For example, MU5101 would be SHA->PEK, definitely their "flagship" domestic route. Same applied for CZ (3101, CAN->PEK). Then you got CA using 4xxx? (CA 4101 is CTU->PEK; but there's also CA1xxx, like 1831 PEK->SHA) . Random search I see CZ using 8xxx, 6xxx, and 3xxx; CA with 1xxx and 4xxx; MU with 5xxx and 2xxx. Then you got ZH (Shenzhen Airline) using 9xxx? (Not surprisingly, ZH9101 is...well, SZX-PEK)

In ZH's case, their lowest would be ZH9001, SZX-BKK. Try beating that

zakuivcustom wrote:

Overthecascades wrote:

zakuivcustom wrote:

Umm...so I guess for MU, MU501 (PVG-HKG) is the lowest number? Funny how both CA (101, PEK-HKG) and MU (501, PVG-HKG) used their "lowest" number on their HKG flights

A few other:
South Korean LCCs:
LJ (Jin Air): Flight 1 is ICN->BKK. Although looks like it's seasonal.
7C (Jeju Air): 101 GMP->CJU
TW (T'way Air, NOT TWA): 101 ICN->BKK
ZE (Eastar Jet): 201 GMP->CJU

Japanese LCCs:
JW (Vanilla Air): 101 NRT->TPE
GK (Jetstar Japan): 11 NRT->TPE (100/101 is seasonal NRT<->CTS that leaves early in the morning)

There's also HX15/16 HKG-OOL-CNS-HKG being its "lowest" number flight. Their numbering are kind of arbitary, though.
For HU, I believe it's Flight 401 SYX->UTP? It's not even daily, though. Most of their flight number are 7xxx range (Domestic). For example, HU7001 is HAK->CAN, which make much more sense as HU is still "Hainan" Airline (Even though they pretty much operated everywhere )

Good call. I would think for Chinese airlines it’s hard to have same flight numbers amongst different carriers

I guess the rule extend to 4-digit flight number also? For example, MU5101 would be SHA->PEK, definitely their "flagship" domestic route. Same applied for CZ (3101, CAN->PEK). Then you got CA using 4xxx? (CA 4101 is CTU->PEK; but there's also CA1xxx, like 1831 PEK->SHA) . Random search I see CZ using 8xxx, 6xxx, and 3xxx; CA with 1xxx and 4xxx; MU with 5xxx and 2xxx. Then you got ZH (Shenzhen Airline) using 9xxx? (Not surprisingly, ZH9101 is...well, SZX-PEK)

In ZH's case, their lowest would be ZH9001, SZX-BKK. Try beating that

CA has 4xxx due to it taking over the old China Southwest Airlines which was assigned 4xxx.