Avianca flight AV 6621: Istanbul - London Heathrow

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FLIGHT SCHEDULE
Direct Codeshare Flights:
Daily 15:00 Istanbul (IST) 16:55 London Heathrow (LHR) 2 AV 6621 Non-stop Boeing 777-300ER (77W) 3:55 Effective 2026-03-29 through 2026-05-11 Codeshare flight, operated by Turkish Airlines.(TK 1971)
Tue 15:00 Istanbul (IST) 16:55 London Heathrow (LHR) 2 AV 6621 Non-stop Airbus A330-300 (333) 3:55 Effective 2026-05-12 through 2026-06-30 Codeshare flight, operated by Turkish Airlines.(TK 1971)
Mon,Wed-Sun 15:00 Istanbul (IST) 16:55 London Heathrow (LHR) 2 AV 6621 Non-stop Boeing 777-300ER (77W) 3:55 Effective 2026-05-13 through 2026-07-06 Codeshare flight, operated by Turkish Airlines.(TK 1971)
Daily 15:00 Istanbul (IST) 16:55 London Heathrow (LHR) 2 AV 6621 Non-stop Boeing 777-300ER (77W) 3:55 Effective 2026-07-07 through 2026-10-24 Codeshare flight, operated by Turkish Airlines.(TK 1971)
Mon,Wed,Thu,Sun 15:10 Istanbul (IST) 16:10 London Heathrow (LHR) 2 AV 6621 Non-stop Boeing 787-9 (789) 4:00 Valid until 2026-01-07 Codeshare flight, operated by Turkish Airlines.(TK 1971)
Tue,Fri 15:10 Istanbul (IST) 16:10 London Heathrow (LHR) 2 AV 6621 Non-stop Airbus A330-300 (333) 4:00 Valid until 2026-01-06 Codeshare flight, operated by Turkish Airlines.(TK 1971)
Thu-Sat 15:10 Istanbul (IST) 16:10 London Heathrow (LHR) 2 AV 6621 Non-stop Airbus A350-900 (359) 4:00 Effective 2026-01-03 through 2026-01-17 Codeshare flight, operated by Turkish Airlines.(TK 1971)
Sun 15:10 Istanbul (IST) 16:10 London Heathrow (LHR) 2 AV 6621 Non-stop Boeing 777-300ER (77W) 4:00 Operates only on 2026-01-11 Codeshare flight, operated by Turkish Airlines.(TK 1971)
Mon,Wed 15:10 Istanbul (IST) 16:10 London Heathrow (LHR) 2 AV 6621 Non-stop Boeing 787-9 (789) 4:00 Effective 2026-01-12 through 2026-02-04 Codeshare flight, operated by Turkish Airlines.(TK 1971)
Tue 15:10 Istanbul (IST) 16:10 London Heathrow (LHR) 2 AV 6621 Non-stop Airbus A330-300 (333) 4:00 Effective 2026-01-13 through 2026-01-27 Codeshare flight, operated by Turkish Airlines.(TK 1971)
Thu-Sun 15:10 Istanbul (IST) 16:10 London Heathrow (LHR) 2 AV 6621 Non-stop Airbus A350-900 (359) 4:00 Effective 2026-01-18 through 2026-02-01 Codeshare flight, operated by Turkish Airlines.(TK 1971)
Tue,Thu,Fri 15:10 Istanbul (IST) 16:10 London Heathrow (LHR) 2 AV 6621 Non-stop Airbus A350-900 (359) 4:00 Effective 2026-02-03 through 2026-03-05 Codeshare flight, operated by Turkish Airlines.(TK 1971)
Mon,Wed,Sat,Sun 15:10 Istanbul (IST) 16:10 London Heathrow (LHR) 2 AV 6621 Non-stop Boeing 787-9 (789) 4:00 Effective 2026-02-07 through 2026-03-02 Codeshare flight, operated by Turkish Airlines.(TK 1971)
Wed 15:10 Istanbul (IST) 16:10 London Heathrow (LHR) 2 AV 6621 Non-stop Airbus A330-300 (333) 4:00 Effective 2026-03-04 through 2026-03-25 Codeshare flight, operated by Turkish Airlines.(TK 1971)
Mon,Fri-Sun 15:10 Istanbul (IST) 16:10 London Heathrow (LHR) 2 AV 6621 Non-stop Boeing 787-9 (789) 4:00 Effective 2026-03-06 through 2026-03-28 Codeshare flight, operated by Turkish Airlines.(TK 1971)
Tue,Thu 15:10 Istanbul (IST) 16:10 London Heathrow (LHR) 2 AV 6621 Non-stop Airbus A350-900 (359) 4:00 Effective 2026-03-10 through 2026-03-26 Codeshare flight, operated by Turkish Airlines.(TK 1971)

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AV 6621 is an international flight departing from Istanbul airport, Turkey (IST) and arriving at London Heathrow airport, United Kingdom (LHR).
The flight distance is 1545 miles, or 2487 km.
The timezone of the departure airport is UTC+3 , and the timezone of the arrival airport is UTC+0 . Current time at the point of departure is (loading...), and (loading...) at the point of arrival. There is a (loading...) hour time difference between the airports.
For direct flights, the flight time varies between 3:55 and 4:00.

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Avianca flight AV 6621:
Istanbul - London Heathrow

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FLIGHT SCHEDULE

Direct Codeshare Flights:

Avianca AV6621

15:00

Istanbul (IST)

16:55

London Heathrow (LHR) 2

Effective 2026-03-29 through 2026-05-11

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by Turkish Airlines. (TK 1971)

Duration: 3:55, non-stop
Boeing 777-300ER (77W)

Direct Codeshare Flights:

Avianca AV6621

15:00

Istanbul (IST)

16:55

London Heathrow (LHR) 2

Effective 2026-05-12 through 2026-06-30

Mon
-

Tue

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Codeshare flight, operated by Turkish Airlines. (TK 1971)

Duration: 3:55, non-stop
Airbus A330-300 (333)

Direct Codeshare Flights:

Avianca AV6621

15:00

Istanbul (IST)

16:55

London Heathrow (LHR) 2

Effective 2026-05-13 through 2026-07-06

Mon

Tue
-

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by Turkish Airlines. (TK 1971)

Duration: 3:55, non-stop
Boeing 777-300ER (77W)

Direct Codeshare Flights:

Avianca AV6621

15:00

Istanbul (IST)

16:55

London Heathrow (LHR) 2

Effective 2026-07-07 through 2026-10-24

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by Turkish Airlines. (TK 1971)

Duration: 3:55, non-stop
Boeing 777-300ER (77W)

Direct Codeshare Flights:

Avianca AV6621

15:10

Istanbul (IST)

16:10

London Heathrow (LHR) 2

Valid until 2026-01-07

Mon

Tue
-

Wed

Thu

Fri
-

Sat
-

Sun

Codeshare flight, operated by Turkish Airlines. (TK 1971)

Duration: 4:00, non-stop
Boeing 787-9 (789)

Direct Codeshare Flights:

Avianca AV6621

15:10

Istanbul (IST)

16:10

London Heathrow (LHR) 2

Valid until 2026-01-06

Mon
-

Tue

Wed
-

Thu
-

Fri

Sat
-

Sun
-

Codeshare flight, operated by Turkish Airlines. (TK 1971)

Duration: 4:00, non-stop
Airbus A330-300 (333)

Direct Codeshare Flights:

Avianca AV6621

15:10

Istanbul (IST)

16:10

London Heathrow (LHR) 2

Effective 2026-01-03 through 2026-01-17

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat

Sun
-

Codeshare flight, operated by Turkish Airlines. (TK 1971)

Duration: 4:00, non-stop
Airbus A350-900 (359)

Direct Codeshare Flights:

Avianca AV6621

15:10

Istanbul (IST)

16:10

London Heathrow (LHR) 2

Operates only on 2026-01-11

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Codeshare flight, operated by Turkish Airlines. (TK 1971)

Duration: 4:00, non-stop
Boeing 777-300ER (77W)

Direct Codeshare Flights:

Avianca AV6621

15:10

Istanbul (IST)

16:10

London Heathrow (LHR) 2

Effective 2026-01-12 through 2026-02-04

Mon

Tue
-

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Codeshare flight, operated by Turkish Airlines. (TK 1971)

Duration: 4:00, non-stop
Boeing 787-9 (789)

Direct Codeshare Flights:

Avianca AV6621

15:10

Istanbul (IST)

16:10

London Heathrow (LHR) 2

Effective 2026-01-13 through 2026-01-27

Mon
-

Tue

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Codeshare flight, operated by Turkish Airlines. (TK 1971)

Duration: 4:00, non-stop
Airbus A330-300 (333)

Direct Codeshare Flights:

Avianca AV6621

15:10

Istanbul (IST)

16:10

London Heathrow (LHR) 2

Effective 2026-01-18 through 2026-02-01

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat

Sun

Codeshare flight, operated by Turkish Airlines. (TK 1971)

Duration: 4:00, non-stop
Airbus A350-900 (359)

Direct Codeshare Flights:

Avianca AV6621

15:10

Istanbul (IST)

16:10

London Heathrow (LHR) 2

Effective 2026-02-03 through 2026-03-05

Mon
-

Tue

Wed
-

Thu

Fri

Sat
-

Sun
-

Codeshare flight, operated by Turkish Airlines. (TK 1971)

Duration: 4:00, non-stop
Airbus A350-900 (359)

Direct Codeshare Flights:

Avianca AV6621

15:10

Istanbul (IST)

16:10

London Heathrow (LHR) 2

Effective 2026-02-07 through 2026-03-02

Mon

Tue
-

Wed

Thu
-

Fri
-

Sat

Sun

Codeshare flight, operated by Turkish Airlines. (TK 1971)

Duration: 4:00, non-stop
Boeing 787-9 (789)

Direct Codeshare Flights:

Avianca AV6621

15:10

Istanbul (IST)

16:10

London Heathrow (LHR) 2

Effective 2026-03-04 through 2026-03-25

Mon
-

Tue
-

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Codeshare flight, operated by Turkish Airlines. (TK 1971)

Duration: 4:00, non-stop
Airbus A330-300 (333)

Direct Codeshare Flights:

Avianca AV6621

15:10

Istanbul (IST)

16:10

London Heathrow (LHR) 2

Effective 2026-03-06 through 2026-03-28

Mon

Tue
-

Wed
-

Thu
-

Fri

Sat

Sun

Codeshare flight, operated by Turkish Airlines. (TK 1971)

Duration: 4:00, non-stop
Boeing 787-9 (789)

Direct Codeshare Flights:

Avianca AV6621

15:10

Istanbul (IST)

16:10

London Heathrow (LHR) 2

Effective 2026-03-10 through 2026-03-26

Mon
-

Tue

Wed
-

Thu

Fri
-

Sat
-

Sun
-

Codeshare flight, operated by Turkish Airlines. (TK 1971)

Duration: 4:00, non-stop
Airbus A350-900 (359)

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AV 6621 is an international flight departing from Istanbul airport, Turkey (IST) and arriving at London Heathrow airport, United Kingdom (LHR).
The flight distance is 1545 miles, or 2487 km.
The timezone of the departure airport is UTC+3 , and the timezone of the arrival airport is UTC+0 . Current time at the point of departure is (loading...), and (loading...) at the point of arrival. There is a (loading...) hour time difference between the airports.
For direct flights, the flight time varies between 3:55 and 4:00.

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