Finnair flight AY 3866: Philadelphia - London Heathrow

Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Daily 19:40 Philadelphia (PHL) A 07:50 London Heathrow (LHR) 3
AY 3866 Non-stop Boeing 787-9 (789) 7:10 Effective 2026-03-29 through 2026-06-02
Codeshare flight, operated by American Airlines.(AA 736)
The flight arrives 1 day after departure.
Sat 19:55 Philadelphia (PHL) A 08:05 London Heathrow (LHR) 3
AY 3866 Non-stop Boeing 787-9 (789) 7:10 Operates only on 2026-03-28
Codeshare flight, operated by American Airlines.(AA 736)
The flight arrives 1 day after departure.
Daily 19:55 Philadelphia (PHL) A 08:05 London Heathrow (LHR) 3
AY 3866 Non-stop Boeing 787-9 (789) 7:10 Effective 2026-06-03 through 2026-10-23
Codeshare flight, operated by American Airlines.(AA 736)
The flight arrives 1 day after departure.
Daily 20:50 Philadelphia (PHL) A 07:50 London Heathrow (LHR) 3
AY 3866 Non-stop Boeing 787-9 (789) 7:00 Effective from 2026-10-24
Codeshare flight, operated by American Airlines.(AA 736)
The flight arrives 1 day after departure.
Finnair flight AY 3866:
Philadelphia - London Heathrow
Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:

Finnair AY3866
Effective 2026-03-29 through 2026-06-02
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 736)
Duration: 7:10, non-stop
Boeing 787-9 (789)
The flight arrives 1 day after departure.

Direct Codeshare Flights:

Finnair AY3866
Operates only on 2026-03-28
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by American Airlines. (AA 736)
Duration: 7:10, non-stop
Boeing 787-9 (789)
The flight arrives 1 day after departure.

Direct Codeshare Flights:

Finnair AY3866
Effective 2026-06-03 through 2026-10-23
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 736)
Duration: 7:10, non-stop
Boeing 787-9 (789)
The flight arrives 1 day after departure.

Direct Codeshare Flights:

Finnair AY3866
Effective from 2026-10-24
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 736)
Duration: 7:00, non-stop
Boeing 787-9 (789)
The flight arrives 1 day after departure.
  • AY 3866 is an international flight departing from Philadelphia airport, United States (PHL) and arriving at London Heathrow airport, United Kingdom (LHR).
  • The flight distance is 3534 miles, or 5687 km.
  • The timezone of the departure airport is UTC-5 , 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 7:00 and 7:10.