Finnair flight AY 4248: Miami - London Heathrow

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FLIGHT SCHEDULE
Direct Codeshare Flights:
Daily 20:35 Miami (MIA) 10:35 London Heathrow (LHR) 3
AY 4248 Non-stop Boeing 777-300ER (77W) 9:00 Effective 2025-07-05 through 2025-08-05
Codeshare flight, operated by American Airlines.(AA 56)
The flight arrives 1 day after departure.
Daily 20:40 Miami (MIA) 10:35 London Heathrow (LHR) 3
AY 4248 Non-stop Boeing 777-300ER (77W) 8:55 Effective 2025-08-06 through 2025-09-02
Codeshare flight, operated by American Airlines.(AA 56)
The flight arrives 1 day after departure.
Daily 20:45 Miami (MIA) 10:35 London Heathrow (LHR) 3
AY 4248 Non-stop Boeing 777-300ER (77W) 8:50 Effective 2025-06-05 through 2025-07-04
Codeshare flight, operated by American Airlines.(AA 56)
The flight arrives 1 day after departure.
Daily 20:50 Miami (MIA) 10:35 London Heathrow (LHR) 3
AY 4248 Non-stop Boeing 777-300ER (77W) 8:45 Valid until 2025-05-18
Codeshare flight, operated by American Airlines.(AA 56)
The flight arrives 1 day after departure.
Daily 20:50 Miami (MIA) 10:35 London Heathrow (LHR) 3
AY 4248 Non-stop Boeing 777-300ER (77W) 8:45 Effective 2025-05-26 through 2025-06-04
Codeshare flight, operated by American Airlines.(AA 56)
The flight arrives 1 day after departure.
Daily 20:50 Miami (MIA) 10:35 London Heathrow (LHR) 3
AY 4248 Non-stop Boeing 777-300ER (77W) 8:45 Effective 2025-09-03 through 2025-10-05
Codeshare flight, operated by American Airlines.(AA 56)
The flight arrives 1 day after departure.
Daily 20:55 Miami (MIA) 10:35 London Heathrow (LHR) 3
AY 4248 Non-stop Boeing 777-300ER (77W) 8:40 Effective 2025-10-06 through 2025-10-24
Codeshare flight, operated by American Airlines.(AA 56)
The flight arrives 1 day after departure.
Daily 21:20 Miami (MIA) 11:05 London Heathrow (LHR) 3
AY 4248 Non-stop Boeing 777-300ER (77W) 8:45 Effective 2025-05-19 through 2025-05-25
Codeshare flight, operated by American Airlines.(AA 56)
The flight arrives 1 day after departure.
Sat 23:40 Miami (MIA) 12:05 London Heathrow (LHR) 3
AY 4248 Non-stop Boeing 777-300ER (77W) 8:25 Operates only on 2025-10-25
Codeshare flight, operated by American Airlines.(AA 56)
The flight arrives 1 day after departure.
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Finnair flight AY 4248:
Miami - London Heathrow
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Select flight date:  Show Calendar
FLIGHT SCHEDULE
Direct Codeshare Flights:
Finnair AY4248
20:35
Miami (MIA)

10:35(+1)
London Heathrow (LHR) 3
Effective 2025-07-05 through 2025-08-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 56)
Duration: 9:00, non-stop
Boeing 777-300ER (77W)
The flight arrives 1 day after departure.
Finnair AY4248
20:40
Miami (MIA)

10:35(+1)
London Heathrow (LHR) 3
Effective 2025-08-06 through 2025-09-02
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 56)
Duration: 8:55, non-stop
Boeing 777-300ER (77W)
The flight arrives 1 day after departure.
Finnair AY4248
20:45
Miami (MIA)

10:35(+1)
London Heathrow (LHR) 3
Effective 2025-06-05 through 2025-07-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 56)
Duration: 8:50, non-stop
Boeing 777-300ER (77W)
The flight arrives 1 day after departure.
Finnair AY4248
20:50
Miami (MIA)

10:35(+1)
London Heathrow (LHR) 3
Valid until 2025-05-18
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 56)
Duration: 8:45, non-stop
Boeing 777-300ER (77W)
The flight arrives 1 day after departure.
Finnair AY4248
20:50
Miami (MIA)

10:35(+1)
London Heathrow (LHR) 3
Effective 2025-05-26 through 2025-06-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 56)
Duration: 8:45, non-stop
Boeing 777-300ER (77W)
The flight arrives 1 day after departure.
Finnair AY4248
20:50
Miami (MIA)

10:35(+1)
London Heathrow (LHR) 3
Effective 2025-09-03 through 2025-10-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 56)
Duration: 8:45, non-stop
Boeing 777-300ER (77W)
The flight arrives 1 day after departure.
Finnair AY4248
20:55
Miami (MIA)

10:35(+1)
London Heathrow (LHR) 3
Effective 2025-10-06 through 2025-10-24
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 56)
Duration: 8:40, non-stop
Boeing 777-300ER (77W)
The flight arrives 1 day after departure.
Finnair AY4248
21:20
Miami (MIA)

11:05(+1)
London Heathrow (LHR) 3
Effective 2025-05-19 through 2025-05-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 56)
Duration: 8:45, non-stop
Boeing 777-300ER (77W)
The flight arrives 1 day after departure.
Finnair AY4248
23:40
Miami (MIA)

12:05(+1)
London Heathrow (LHR) 3
Operates only on 2025-10-25
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by American Airlines. (AA 56)
Duration: 8:25, non-stop
Boeing 777-300ER (77W)
The flight arrives 1 day after departure.
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  • AY 4248 is an international flight departing from Miami airport, United States (MIA) and arriving at London Heathrow airport, United Kingdom (LHR).
  • The flight distance is 4415 miles, or 7105 km.
  • The timezone of the departure airport is UTC-5 (plus 1h DST), and the timezone of the arrival airport is UTC+0 (plus 1h DST). Current time at the point of departure is 6:39pm, and 11:39pm at the point of arrival. There is a 5 hour time difference between the airports.
  • For direct flights, the flight time varies between 8:25 and 9:00.
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