IndiGo

If you spot in Europe, IndiGo is a real rarity – even though, measured by fleet, it is one of the largest airlines in the world. In India it flies more than any other carrier, with hundreds of almost identical Airbus jets. For you as a spotter, IndiGo gets interesting where the uniform picture breaks up: with leased widebody jets, with the long-range A321 and, from 2027, with the A350. This page shows you how to recognize IndiGo with confidence and where you can actually see it.

IndiGo at a glance

IndiGo is an Indian low-cost carrier based in Gurgaon (Gurugram) near Delhi. Behind the brand is the publicly listed InterGlobe Aviation. The company was founded in 2005 by Rahul Bhatia, whose InterGlobe group held most of the shares, and the former US airline executive Rakesh Gangwal. Before the first flight, in June 2005 IndiGo placed a firm order for 100 Airbus A320s – an unusually bold start for an airline without a single aircraft.

The first aircraft arrived in July 2006, and on August 4, 2006 the first scheduled flight went from Delhi via Guwahati to Imphal. After that IndiGo grew at a pace that is rare in aviation: by 2012 it was already India’s largest airline, and in August 2025 its share of the domestic market was around 64 percent. In 2023 it carried more than 100 million passengers in a calendar year for the first time.

The recipe resembles that of other successful low-cost carriers like Ryanair: a uniform fleet, high utilization, short turnaround times and a dense network. At the end of 2025 IndiGo served around 137 destinations, about 94 of them domestic, with more than 2,700 flights per day. The first international flight went from Delhi to Dubai on September 1, 2011.

Codes and callsign

• IATA code 6E: appears in the flight number, on the departures board and on the ticket. The combination of a digit and a letter is allowed for IATA codes and has no special meaning.
• ICAO code IGO: appears in the air traffic control flight plan and on flight trackers.
• Callsign IFLY: how the crew identifies itself on the radio – not “IndiGo”.

The callsign in particular often surprises people when listening in. If you hear “IFLY” on the radio, you have an IndiGo on the hook. You can read more about the system behind the two kinds of codes in IATA and ICAO codes explained.

The fleet: Airbus almost everywhere

In July 2026 the IndiGo fleet comprised around 425 aircraft. The picture is as uniform as at European low-cost carriers, just with Airbus instead of Boeing:

Type	Role	Spotter tip
Airbus A320neo	Backbone on domestic and regional routes	The classic, big neo engines and Sharklets
Airbus A321neo	Busy routes and international destinations	More than 160 examples – the world’s largest A321neo fleet
Airbus A321XLR	Long narrowbody routes	Ordered in the 2019 package; looks very similar to the A321neo
ATR 72-600	Shorter domestic routes, small airports	Turboprop in IndiGo colors, practically never seen in Europe
Airbus A321 freighter	IndiGo CarGo	Three converted aircraft without passenger windows
Airbus A350-900	Own long-haul	Deliveries planned from 2027

The A320neo was the aircraft with which IndiGo became big; the airline has gradually replaced the early first-generation A320s. The focus is now shifting to the longer A321neo, because more seats per takeoff are especially valuable at congested Indian airports. For domestic connections to smaller cities, IndiGo deploys the ATR 72-600 from ATR.

The record orders

IndiGo is one of the most important customers of Airbus. The orders of recent years show how big the plans are:

• August 2015: 250 A320neo-family aircraft
• October 2019: 300 A320neo-family aircraft, including A321XLRs
• June 2023: 500 A320neo-family aircraft – the largest single order in commercial aviation when announced
• April 2024: 30 A350-900s with options on a further 70; by now 60 A350-900s are in the order books

So it is clear: even though the fleet is already huge today, it will keep growing in the coming years – and, alongside the A320neo family, will get its own widebody type with the A350 for the first time.

The road to long-haul: wet lease instead of own jets

For a long time IndiGo was a pure narrowbody airline. For destinations beyond the range of an A321 it lacked widebody aircraft of its own – so the airline rented them with crew. What exactly a wet lease is, the article Wet lease explained covers.

Turkish Airlines, from 2023: In February 2023 IndiGo entered widebody operations with a leased Boeing 777-300ER from Turkish Airlines. Two of these 777s flew between Delhi or Mumbai and Istanbul Airport.

Norse Atlantic, from 2025: On March 1, 2025 the first flight followed with a Boeing 787-9 from Norse Atlantic Airways. Up to six Dreamliners flew to Europe for IndiGo, including to Amsterdam and Manchester. In July 2026, however, both sides ended the cooperation entirely; according to industry reports, IndiGo thereby gave up widebody operations with leased jets for now.

Other wet leases: To bridge bottlenecks, IndiGo at times also used Boeing 737 MAX from Qatar Airways and Corendon as well as A320s from Smartlynx and Freebird. Such aircraft carry foreign registrations and often a foreign livery – a case for looking closely.

The A350 order

With the A350, IndiGo gets widebody aircraft of its own for the first time. The airline announced the first order for 30 A350-900s in April 2024, and by now 60 aircraft are in the order books. Deliveries are planned from 2027. Until then, long-haul remains a transitional project.

For spotters that is an exciting prospect: an A350 in IndiGo colors will be a completely new sighting. You can tell the difference from the Dreamliner mainly by the dark mask around the cockpit windows and the curved wingtips – details in the guide A350 or Boeing 787?.

How to recognize IndiGo

The livery is one of the most striking in Asia. Instead of a white fuselage with a colorful tail, IndiGo relies on an indigo-blue underside that runs from the belly to the rear, combined with light blue accents on fuselage and tail. Engines and Sharklets are indigo blue as well. The “IndiGo” titles sit on the light upper fuselage.

On the ground you often see IndiGo aircraft in India at remote stands, with short turnaround times between rotations. Important for identification: Indian aircraft carry the prefix VT-, and at IndiGo many registrations start with VT-I. How registrations are built in general is shown in Understanding aircraft registrations.

The A321XLR looks confusingly similar to the A321neo from the outside, and on many trackers it also runs under the same ICAO type code A21N. Identification only becomes certain through the registration and a current fleet list. More in Telling the A318 to A321 apart and A320neo or ceo?.

Spotting IndiGo in Europe

In Europe, IndiGo remains a sighting with rarity value. The network was constantly in motion in 2025 and 2026: besides Istanbul, Amsterdam, Athens and London Heathrow were among the European destinations, while Manchester and Copenhagen were dropped again. London Heathrow ends on October 25, 2026 according to current route overviews. For Athens, IndiGo has planned the A321XLR according to industry reports – check which type is actually flying before you go spotting.

Your best chances are therefore in Amsterdam and Istanbul. At Schiphol, the Panoramaterras (panorama terrace) and the spotter place at the Polderbaan are worth a visit; the plane spotting guide for Schiphol gives an overview of all the spots. In Istanbul the Istanbul plane spotting guide helps you.

If you want to see IndiGo in large numbers, you have to go to India. At Delhi Airport, the main hub, IndiGo aircraft are part of the permanent program. Mind the local rules there: in India, photography at airports is viewed more strictly than in central Europe – get informed beforehand, for example in the article Plane spotting in India, and only take photos where it is explicitly allowed.

Partners instead of an alliance

IndiGo does not belong to any of the major alliances. Instead, the airline relies on codeshares: partners include Turkish Airlines (since 2019), American Airlines, Air France, British Airways, Virgin Atlantic, Qatar Airways, Qantas, Japan Airlines, Malaysia Airlines and Aegean. For passengers this means connections on one ticket; for you as a spotter, mainly one thing: a 6E flight number can also appear on a flight of a partner airline. How this works is explained in Codeshare flights explained.

In the Indian market, IndiGo competes mainly with the Air India group, with Akasa Air and with SpiceJet. Measured by fleet and market share, IndiGo is clearly ahead.

Turbulent times in 2025 and 2026

Growth has not run entirely smoothly lately. From December 2, 2025, IndiGo had to cancel almost 4,500 flights within about ten days because crew rosters had not been adjusted in time to new rest-period rules from India’s aviation authority DGCA. A change at the top of the company followed in March 2026, and the end of the Norse cooperation in July 2026. For spotters this mainly means: schedules and aircraft assignments at IndiGo are currently changing more often than usual.

Common mix-ups

• Taking 6E for a typo – a digit plus a letter is a valid IATA code and belongs to IndiGo.
• Waiting for “IndiGo” on the radio – the callsign is “IFLY”.
• Logging a Norse 787 as an IndiGo aircraft – the Dreamliners belonged to Norse and carried its registrations; IndiGo was only the customer.
• Logging an A321XLR as a regular A321neo – hard to tell apart from the outside; the registration and the fleet list make the difference.
• Confusing IndiGo with Indigo Partners – the US investment firm behind airlines like JetSMART has nothing to do with the Indian airline.
• Carrying over old route info – Manchester and Copenhagen are no longer in the network.

Conclusion

IndiGo is the airline that shapes India’s sky and only rarely shows up in Europe. Behind the uniform Airbus fleet are a record order for 500 jets, a difficult road to long-haul with leased 777s and 787s, and an A350 future from 2027. If you catch IndiGo in Europe, note the registration, type and ICAO code carefully – that turns a rare sighting into a clean entry.