I was wondering what city pairs got the highest number of airlines flying between them. The highest number I could find is 5 airlines on London - Barcelona. British Airways, EasyJet, Norwegian, Ryanair and Vueling all fly this route but in London from different airports.

What city pairs got more airlines flying between them? This is not about frequency, only about number of airlines.

If you include seasonal charter flights Warsaw - Barcelona is connected by 8 different airlines. 7 of them fly from Warsaw Chopin, one from Warsaw Modlin.

From Chopin to Barcelona: Enter Air, LOT Polish Airlines, Norwegian, Small Planet Airlines Poland, SmartWings (operated by Travel Service Poland), Vueling and Wizzair.

From Modlin to Barcelona: Ryanair.

I think HKG-ICN has over 10 airlines on the route, HKG-BKK 6, BOM- DXB 5

Wow... quite shocking the WAW case.

I assume one of the busiest routes of the world might be the NYC-LON corridor which as far as I know is operated by:
JFK-LHR: American, Delta, British Airways and Virgin Atlantic.
JFK-LGW: Norwegian and BA
EWR-LHR: United and Air India.
JFK-LCY: BA
STN-EWR: Primera Air (begins S18)

That makes a total of 8, when you consider all airports in both metropolitan areas of LON and NYC.

HKG-TYO (NRT and HND) has 9 at the moment:

All Nipon Airways (both)
Cathay Dragon (NRT)
Cathay Pacific (both)
Ethiopian Airlines (ends S18)
Hong Kong Airlines (NRT)
HK Express (both)
Japan Airlines (both)
Jetstar Japan (NRT)
Vanilla Air (NRT)

MAN-ALC:

Ryanair
Thomas Cook
TUI
British Airways
Easyjet
Vueling (to be announced soon)
Norwegian (back for S18 3 weekly according to MAN internal system)
Jet2
And recently had Monarch too.

Manchester is Alicante’s largest route by capacity and passengers carried AFAIK.

zeke wrote:

I think HKG-ICN has over 10 airlines on the route, HKG-BKK 6, BOM- DXB 5

It's actually 12 carriers on HKG-ICN (for now, since ET is ending the route along with HKG-NRT)

From Hong Kong - Cathay Pacific (CX), HK Airlines (HX), HK Express (UO)
From S. Korea - Korean Air (KE), Asiana (OZ), Air Seoul (RS), Jin Air (LJ), Jeju Air (7C), Eastar Jet (ZE)
5th Freedom - Ethiopian (ET), Thai Airways (TG), Air India (AI)

Another route out of ICN is to TPE, with 11 carriers.
From Taiwan - EVA Air (BR), China Airlines (CI), Uni Air (B7)
From S. Korea - Korean Air (KE), Asiana (OZ), Air Seoul (RS), Jin Air (LJ), Jeju Air (7C), Eastar Jet (ZE)
5th Freedom - Cathay Pacific (CX), Thai Airways (TG), Scoot (TR)

For Taipei <-> Seoul, T'way Air (TW) also operates 4/wk between TSA and GMP, codesharing with ZE (Who operates the other 3 days of the week on their metal) to make it 12 carriers total.

Still from ICN:
KIX: Korean Air (KE), Asiana (OZ), Air Seoul (RS), Jin Air (LJ), Jeju Air (7C), Eastar Jet (ZE), T'way Air (TW), Peach (MM) for 8 carriers.
NRT: Korean Air (KE) [Also to HND], Asiana (OZ) [Also to HND], Air Seoul (RS), Jin Air (LJ), Jeju Air (7C), Eastar Jet (ZE), T'way Air (TW), Japan Airlines (JL) [ending March 2018] for 8 carriers. Then there's Peach (MM) flying ICN-HND, and All Nippon Airways (NH) fly between GMP and HND. Ethiopian (ET) will start flying the route in June 2018 after they moved their current ADD-HKG-ICN/NRT to ADD-ICN-NRT. For now, it's 10 carriers (JL will still fly GMP-HND after ending ICN-NRT).

From TPE:
KIX: China Airlines (CI), EVA Air (BR), Japan Airlines (JL), Cathay Pacific (CX), Jetstar Asia (3K), Peach (MM), Vanilla Air (JW), Philippine Airlines (PR), Tigerair Taiwan (IT) for 9. Jetstar Japan (GK) fly the route seasonally as added frequency alongside 3K.
NRT - China Airlines (CI), EVA Air (BR), Japan Airlines (JL), All Nippon Airways (NH), Cathay Pacific (CX), Jetstar Japan (GK), Vanilla Air (JW), Scoot (TR), Tigerair Taiwan (IT) [Also to HND]. Peach (MM) also fly TPE-HND. CI, BR, JL, and NH fly between TSA and HND. Thus a total of 10 carriers between Taipei and Tokyo.

Those South Korean LCCs definitely helps with increasing the number of airlines . A fair amount of 5th freedom flights also.

Amsterdam London, not sure 60-70 flights a day?

Out ot topic...

Pretty interesting none European carrier flying TPE other than KLM, and AF from S18.
Most underserved Asian market from Europe?

a350lover wrote:

Out ot topic...

Pretty interesting none European carrier flying TPE other than KLM, and AF from S18.
Most underserved Asian market from Europe?

It's purely historical anyway. No overflying China to Taiwan for years = just hard to served TPE when you have to take a huge detour.

Even now it looks like flight have to cross through HK airspace first on the way to TPE. Also, it looks like CI take a huge detour on their westbound (Europe-bound) up through Sea of Japan to VVO and fly around China (Eastbound they fly though PRC, though).

On the other hand, such restriction is what make TPE-HKG so lucrative for years . (Yes, I know, the Taiwan <-> PRC traffic is the main driver, but Taiwan <-> Europe is also big and with the direct cross-strait flights now, the thing that keeps high traffic on that route). CI and BR used to have that BKK stop for Europe flight for this reason also.

keesje wrote:

Amsterdam London, not sure 60-70 flights a day?

But only on 6 airlines, so certainly no record holder. Initial post said it's about the number of airlines, not about the frequency.

Dhaka (DAC) - Kolkata (CCU) has the following:

Jet Airways (1 daily)
Spice Jet (2 daily)
Air India (1 daily)
Biman (12 flights including 1 daily)
Regent (10 flights including 1 daily)
US Bangla (1 daily)
NovoAir (1 daily)

For long haul routes, LHR-LAX must be up there with 5 carriers, and if including LGW-LAX 6 carriers.

Summer 2018
BA (2x A380 + 1x 787)
AA (1x 77W + 1x 77E)
NZ (1x 77W)
VS (3x 787)
UA (1x 787)
DY (2x 787)

Miami (South Florida) - Nassau (7)

3M, AA, B6, II, NK, Q7, UP, WN

Miami - NYC (7)

AA, B6, DL, F9, NK, UA, WN

Miami - Havana (7) (including charters)

AA, AG, B6, DL, SY, WN, WQ

Miami - Bogota (5)

4C, AA, AV, B6, NK

Miami - Medellin (5)

AA, AV, B6, FC, NK

Miami - Port-au-Prince (5)

AA, AF, B6, NK, S6

a350lover wrote:

Wow... quite shocking the WAW case.

I assume one of the busiest routes of the world might be the NYC-LON corridor which as far as I know is operated by:
JFK-LHR: American, Delta, British Airways and Virgin Atlantic.
JFK-LGW: Norwegian and BA
EWR-LHR: United and Air India.
JFK-LCY: BA
STN-EWR: Primera Air (begins S18)

That makes a total of 8, when you consider all airports in both metropolitan areas of LON and NYC.

You beat me to it but just to add one other to the last that you had missed,

EWR-LHR Virgin Atlantic

Adding a few from Shanghai, although I don't think they top the list.

Shanghai (PVG+SHA) <-> Tokyo (HND+NRT) has 10:
1. JAL [JL] (3x NRT-PVG, 1x HND-PVG, 1x HND-SHA)
2. ANA [NH] (3x NRT-PVG, 2x HND-PVG, 1x HND-SHA)
3. China Eastern [MU] (3x NRT-PVG, 2x HND-PVG, 1x HND-SHA)
4. Shanghai Airlines [FM] (3/wk HND-PVG, 1x HND-SHA)
5. Air China [CA] (3x NRT-PVG)
6. Delta [DL] (1x NRT-PVG)
7. Juneyao Airlines [HO] (3/wk HND-PVG)
8. Spring Airlines [9C] (4/wk HND-PVG)
9. Peach [MM] (1x HND-PVG)
10. Jetstar Japan [GK] (4/wk NRT-PVG)

Not quite as many as Tokyo, but Osaka (KIX) also has 9 carriers from Shanghai (PVG). Notably, all 3 of CN3 operates the route.
1. Air China [CA] 3x
2. China Eastern [MU] 4x
3. China Southern [CZ] 1x
4. Juneyao Airlines [HO] 3x
5. Shanghai Airlines [FM] 1x
6. Spring Airlines [9C] 2x
7. JAL [JL] 2x
8. ANA [NH] 2x
9. Peach [MM] 1x

Meanwhile, Nagoya (NGO) is not far behind with 7. Again, all 3 of CN3 fly the route (PVG-NGO):
1. ANA [NH] 1x
2. JAL [JL] 1x
3. China Eastern [MU] 3x
4. Air China [CA] 2x
5. China Southern [CZ] 1x
6. Juneyao Airlines [HO] 1x
7. Spring Airlines [9C] 1x

GRU-BUE: AR+AU, G3, JJ+4M, QR, TK, ET

Does ET, QR, TK actually have traffic rights between GRU and EZE?

FYI the IATA code for Buenos Aires is EZE not BUE.

Duplicate

TK and QR have, apparently EK doesn't. The first two are often the cheapest with their 777 flying the route.

Cunard wrote:

Does ET, QR, TK actually have traffic rights between GRU and EZE?

FYI the IATA code for Buenos Aires is EZE not BUE.

Yes they do and are ususaly the cheapest options with great deals for C class, though the schedules from EZE to Brasil are terrible.
BUE is for the city code of Buenos Aires and cover EZE+AEP.

AA, UA, DL, QF and Virgin Australia all fly LAX-SYD - that's 5 airlines.

Some other random one:
NRT-HNL: 7 (1x UA, 4x JL, 2x NH, 1x CI, 1x KE, 2x DL, 1x HA)

KUL-SIN: 8 (MH, SQ, MI (SlikAir), TR (Scoot), AK (AirAsia), 3K (Jetstar Asia), OD (Malindo Air), ET (Ethiopian))
KUL-CGK: 7 or 9, depending on how you count the AirAsia flights (AK (AirAsia) + QZ (Indonesia AirAsia) + XT (Indonesia AirAsia X), MH, GA, OD, KL, JT (Lion Air), ID (Batik Air))
KUL-BKK or DMK: 5 or 7, again, depending on how you count the AirAsia flights (AK (AirAsia) + FD (Thai AirAsia) [Both to DMK], OD [to DMK], MH, TG (Thai Airways) + WE (Thai Smile), RJ)

SIN-CGK: 7 (SQ, GA, ID, JT, 3K, TR, QZ)
SIN-BKK or DMK: 8 (FD [to DMK], SL (Thai Lion Air) [to DMK], TR [to DMK & BKK], 3K [to BKK], PG (Bangkok Airways) [to BKK], CX [to BKK], SQ [to BKK], TG [to BKK])

SGN-BKK or DMK: 7 (TG [to BKK], VN [to BKK], VJ (VietJet Air) [to BKK], FD [to DMK], SL [to DMK], BL (Jetstar Pacific) [to DMK], DD (Nok Air) [to DMK])
SGN-SIN: 5 or 6 (SQ, VN, TR, VJ, BL + 3K)

And forgot to add this to my Shanghai related post:
PEK-SHA: 7 (MU, FM, CA, CZ, HO, HU, MF (XiamenAir))
HKG-PVG: 7 (CX, KA, MU, FM, HX, HO, 9C)

At the end of the day, talk about cutthroat competition in most of East Asia/SE Asia

On the other hand, for now HKG-ICN still tops the list with 12 carriers (Soon to be 11) flying the route.