Finnair flights from London Heathrow (LHR) to Pittsburgh (PIT).

Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Mon,Wed,Fri 16:00 London Heathrow (LHR) 5 19:20 Pittsburgh (PIT)
Finnair AY 5421 Non-stop Boeing 787-8 (788) 8:20 Valid until 2026-01-09
Codeshare flight, operated by British Airways.(BA 171)
Sat 16:00 London Heathrow (LHR) 5 19:20 Pittsburgh (PIT)
Finnair AY 5421 Non-stop Boeing 787-10 (781) 8:20 Operates only on 2026-01-03
Codeshare flight, operated by British Airways.(BA 171)
Mon,Sat 16:00 London Heathrow (LHR) 5 19:20 Pittsburgh (PIT)
Finnair AY 5421 Non-stop Boeing 787-8 (788) 8:20 Effective 2026-01-10 through 2026-01-19
Codeshare flight, operated by British Airways.(BA 171)
Wed 16:00 London Heathrow (LHR) 5 19:20 Pittsburgh (PIT)
Finnair AY 5421 Non-stop Boeing 787-9 (789) 8:20 Effective 2026-01-14 through 2026-01-21
Codeshare flight, operated by British Airways.(BA 171)
Mon,Wed,Fri,Sat 16:00 London Heathrow (LHR) 5 19:20 Pittsburgh (PIT)
Finnair AY 5421 Non-stop Boeing 787-8 (788) 8:20 Effective 2026-01-23 through 2026-02-02
Codeshare flight, operated by British Airways.(BA 171)
Mon,Fri 16:00 London Heathrow (LHR) 5 19:20 Pittsburgh (PIT)
Finnair AY 5421 Non-stop Boeing 787-8 (788) 8:20 Effective 2026-02-06 through 2026-02-09
Codeshare flight, operated by British Airways.(BA 171)
Fri,Sat 16:00 London Heathrow (LHR) 5 19:20 Pittsburgh (PIT)
Finnair AY 5421 Non-stop Boeing 787-10 (781) 8:20 Effective 2026-02-07 through 2026-02-14
Codeshare flight, operated by British Airways.(BA 171)
Wed 16:00 London Heathrow (LHR) 5 19:20 Pittsburgh (PIT)
Finnair AY 5421 Non-stop Boeing 787-9 (789) 8:20 Operates only on 2026-02-11
Codeshare flight, operated by British Airways.(BA 171)
Mon,Wed,Fri,Sat 16:00 London Heathrow (LHR) 5 19:20 Pittsburgh (PIT)
Finnair AY 5421 Non-stop Boeing 787-8 (788) 8:20 Effective 2026-02-16 through 2026-02-28
Codeshare flight, operated by British Airways.(BA 171)
Wed,Fri 16:00 London Heathrow (LHR) 5 19:20 Pittsburgh (PIT)
Finnair AY 5421 Non-stop Boeing 787-8 (788) 8:20 Effective 2026-03-04 through 2026-03-06
Codeshare flight, operated by British Airways.(BA 171)
Mon,Wed,Fri,Sat 16:00 London Heathrow (LHR) 5 20:20 Pittsburgh (PIT)
Finnair AY 5421 Non-stop Boeing 787-8 (788) 8:20 Effective 2026-03-09 through 2026-03-28
Codeshare flight, operated by British Airways.(BA 171)
Mon,Wed,Fri,Sat 16:00 London Heathrow (LHR) 5 20:20 Pittsburgh (PIT)
Finnair AY 5421 Non-stop Boeing 787-8 (788) 8:20 Effective from 2026-10-26
Codeshare flight, operated by British Airways.(BA 171)
Mon,Thu-Sun 16:40 London Heathrow (LHR) 5 19:50 Pittsburgh (PIT)
Finnair AY 5421 Non-stop Boeing 787-8 (788) 8:10 Effective 2026-03-29 through 2026-04-06
Codeshare flight, operated by British Airways.(BA 171)
Tue 16:40 London Heathrow (LHR) 5 19:50 Pittsburgh (PIT)
Finnair AY 5421 Non-stop Boeing 787-10 (781) 8:10 Operates only on 2026-03-31
Codeshare flight, operated by British Airways.(BA 171)
Wed 16:40 London Heathrow (LHR) 5 19:50 Pittsburgh (PIT)
Finnair AY 5421 Non-stop Boeing 787-9 (789) 8:10 Operates only on 2026-04-01
Codeshare flight, operated by British Airways.(BA 171)
Daily 16:40 London Heathrow (LHR) 5 19:50 Pittsburgh (PIT)
Finnair AY 5421 Non-stop Boeing 787-8 (788) 8:10 Effective 2026-04-07 through 2026-04-21
Codeshare flight, operated by British Airways.(BA 171)
Mon,Wed,Sat 16:40 London Heathrow (LHR) 5 19:50 Pittsburgh (PIT)
Finnair AY 5421 Non-stop Boeing 787-9 (789) 8:10 Effective 2026-04-22 through 2026-04-29
Codeshare flight, operated by British Airways.(BA 171)
Tue,Thu,Fri,Sun 16:40 London Heathrow (LHR) 5 19:50 Pittsburgh (PIT)
Finnair AY 5421 Non-stop Boeing 787-8 (788) 8:10 Effective 2026-04-23 through 2026-04-28
Codeshare flight, operated by British Airways.(BA 171)
Tue-Thu 16:40 London Heathrow (LHR) 5 19:50 Pittsburgh (PIT)
Finnair AY 5421 Non-stop Boeing 787-9 (789) 8:10 Effective 2026-04-30 through 2026-05-06
Codeshare flight, operated by British Airways.(BA 171)
Mon,Thu-Sun 16:40 London Heathrow (LHR) 5 19:50 Pittsburgh (PIT)
Finnair AY 5421 Non-stop Boeing 787-8 (788) 8:10 Effective 2026-05-01 through 2026-05-08
Codeshare flight, operated by British Airways.(BA 171)
Tue-Thu,Sat 16:40 London Heathrow (LHR) 5 19:50 Pittsburgh (PIT)
Finnair AY 5421 Non-stop Boeing 787-9 (789) 8:10 Effective 2026-05-09 through 2026-05-14
Codeshare flight, operated by British Airways.(BA 171)
Mon,Fri-Sun 16:40 London Heathrow (LHR) 5 19:50 Pittsburgh (PIT)
Finnair AY 5421 Non-stop Boeing 787-8 (788) 8:10 Effective 2026-05-10 through 2026-05-17
Codeshare flight, operated by British Airways.(BA 171)
Mon-Wed,Sun 16:40 London Heathrow (LHR) 5 19:50 Pittsburgh (PIT)
Finnair AY 5421 Non-stop Boeing 787-9 (789) 8:10 Effective 2026-05-18 through 2026-05-24
Codeshare flight, operated by British Airways.(BA 171)
Mon,Thu-Sat 16:40 London Heathrow (LHR) 5 19:50 Pittsburgh (PIT)
Finnair AY 5421 Non-stop Boeing 787-8 (788) 8:10 Effective 2026-05-21 through 2026-05-25
Codeshare flight, operated by British Airways.(BA 171)
Tue-Thu,Sun 16:40 London Heathrow (LHR) 5 19:50 Pittsburgh (PIT)
Finnair AY 5421 Non-stop Boeing 787-9 (789) 8:10 Effective 2026-05-26 through 2026-06-10
Codeshare flight, operated by British Airways.(BA 171)
Mon,Fri,Sat 16:40 London Heathrow (LHR) 5 19:50 Pittsburgh (PIT)
Finnair AY 5421 Non-stop Boeing 787-8 (788) 8:10 Effective 2026-05-29 through 2026-06-08
Codeshare flight, operated by British Airways.(BA 171)
Mon,Thu-Sat 16:40 London Heathrow (LHR) 5 19:50 Pittsburgh (PIT)
Finnair AY 5421 Non-stop Boeing 787-8 (788) 8:10 Effective 2026-06-11 through 2026-06-22
Codeshare flight, operated by British Airways.(BA 171)
Tue,Wed,Sun 16:40 London Heathrow (LHR) 5 19:50 Pittsburgh (PIT)
Finnair AY 5421 Non-stop Boeing 787-9 (789) 8:10 Effective 2026-06-14 through 2026-06-23
Codeshare flight, operated by British Airways.(BA 171)
Mon-Wed,Fri 16:40 London Heathrow (LHR) 5 19:50 Pittsburgh (PIT)
Finnair AY 5421 Non-stop Boeing 787-8 (788) 8:10 Effective 2026-06-24 through 2026-07-01
Codeshare flight, operated by British Airways.(BA 171)
Thu,Sat,Sun 16:40 London Heathrow (LHR) 5 19:50 Pittsburgh (PIT)
Finnair AY 5421 Non-stop Boeing 787-9 (789) 8:10 Effective 2026-06-25 through 2026-06-28
Codeshare flight, operated by British Airways.(BA 171)
Mon,Wed-Sat 16:40 London Heathrow (LHR) 5 19:50 Pittsburgh (PIT)
Finnair AY 5421 Non-stop Boeing 787-8 (788) 8:10 Effective 2026-07-02 through 2026-07-27
Codeshare flight, operated by British Airways.(BA 171)
Tue,Sun 16:40 London Heathrow (LHR) 5 19:50 Pittsburgh (PIT)
Finnair AY 5421 Non-stop Boeing 787-9 (789) 8:10 Effective 2026-07-05 through 2026-07-26
Codeshare flight, operated by British Airways.(BA 171)
Mon-Thu,Sat 16:40 London Heathrow (LHR) 5 19:50 Pittsburgh (PIT)
Finnair AY 5421 Non-stop Boeing 787-8 (788) 8:10 Effective 2026-07-28 through 2026-08-03
Codeshare flight, operated by British Airways.(BA 171)
Tue,Thu,Fri,Sun 16:40 London Heathrow (LHR) 5 19:50 Pittsburgh (PIT)
Finnair AY 5421 Non-stop Boeing 787-9 (789) 8:10 Effective 2026-07-31 through 2026-08-06
Codeshare flight, operated by British Airways.(BA 171)
Wed,Fri,Sat 16:40 London Heathrow (LHR) 5 19:50 Pittsburgh (PIT)
Finnair AY 5421 Non-stop Boeing 787-8 (788) 8:10 Effective 2026-08-05 through 2026-08-15
Codeshare flight, operated by British Airways.(BA 171)
Mon,Tue,Thu,Sun 16:40 London Heathrow (LHR) 5 19:50 Pittsburgh (PIT)
Finnair AY 5421 Non-stop Boeing 787-9 (789) 8:10 Effective 2026-08-09 through 2026-08-16
Codeshare flight, operated by British Airways.(BA 171)
Mon,Wed,Fri,Sat 16:40 London Heathrow (LHR) 5 19:50 Pittsburgh (PIT)
Finnair AY 5421 Non-stop Boeing 787-8 (788) 8:10 Effective 2026-08-17 through 2026-08-26
Codeshare flight, operated by British Airways.(BA 171)
Tue,Thu,Sun 16:40 London Heathrow (LHR) 5 19:50 Pittsburgh (PIT)
Finnair AY 5421 Non-stop Boeing 787-9 (789) 8:10 Effective 2026-08-18 through 2026-08-25
Codeshare flight, operated by British Airways.(BA 171)
Thu-Sat 16:40 London Heathrow (LHR) 5 19:50 Pittsburgh (PIT)
Finnair AY 5421 Non-stop Boeing 787-8 (788) 8:10 Effective 2026-08-27 through 2026-08-29
Codeshare flight, operated by British Airways.(BA 171)
Mon-Thu,Sun 16:40 London Heathrow (LHR) 5 19:50 Pittsburgh (PIT)
Finnair AY 5421 Non-stop Boeing 787-9 (789) 8:10 Effective 2026-08-30 through 2026-09-10
Codeshare flight, operated by British Airways.(BA 171)
Fri,Sat 16:40 London Heathrow (LHR) 5 19:50 Pittsburgh (PIT)
Finnair AY 5421 Non-stop Boeing 787-8 (788) 8:10 Effective 2026-09-04 through 2026-09-11
Codeshare flight, operated by British Airways.(BA 171)
Mon-Thu,Sat,Sun 16:40 London Heathrow (LHR) 5 19:50 Pittsburgh (PIT)
Finnair AY 5421 Non-stop Boeing 787-9 (789) 8:10 Effective 2026-09-12 through 2026-09-22
Codeshare flight, operated by British Airways.(BA 171)
Wed,Fri 16:40 London Heathrow (LHR) 5 19:50 Pittsburgh (PIT)
Finnair AY 5421 Non-stop Boeing 787-8 (788) 8:10 Effective 2026-09-18 through 2026-09-25
Codeshare flight, operated by British Airways.(BA 171)
Mon-Thu,Sat,Sun 16:40 London Heathrow (LHR) 5 19:50 Pittsburgh (PIT)
Finnair AY 5421 Non-stop Boeing 787-9 (789) 8:10 Effective 2026-09-24 through 2026-10-04
Codeshare flight, operated by British Airways.(BA 171)
Mon,Thu,Fri 16:40 London Heathrow (LHR) 5 19:50 Pittsburgh (PIT)
Finnair AY 5421 Non-stop Boeing 787-8 (788) 8:10 Effective 2026-10-02 through 2026-10-09
Codeshare flight, operated by British Airways.(BA 171)
Mon-Wed,Sun 16:40 London Heathrow (LHR) 5 19:50 Pittsburgh (PIT)
Finnair AY 5421 Non-stop Boeing 787-9 (789) 8:10 Effective 2026-10-06 through 2026-10-21
Codeshare flight, operated by British Airways.(BA 171)
Thu-Sat 16:40 London Heathrow (LHR) 5 19:50 Pittsburgh (PIT)
Finnair AY 5421 Non-stop Boeing 787-8 (788) 8:10 Effective 2026-10-10 through 2026-10-24
Codeshare flight, operated by British Airways.(BA 171)




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Finnair flights from London Heathrow (LHR) to Pittsburgh (PIT).
Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Finnair AY5421
16:00
London Heathrow (LHR) 5

19:20
Pittsburgh (PIT)
Valid until 2026-01-09
Mon
Tue
-
Wed
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by British Airways. (BA 171)
Duration: 8:20, non-stop
Boeing 787-8 (788)
Direct Codeshare Flights:
Finnair AY5421
16:00
London Heathrow (LHR) 5

19:20
Pittsburgh (PIT)
Operates only on 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by British Airways. (BA 171)
Duration: 8:20, non-stop
Boeing 787-10 (781)
Direct Codeshare Flights:
Finnair AY5421
16:00
London Heathrow (LHR) 5

19:20
Pittsburgh (PIT)
Effective 2026-01-10 through 2026-01-19
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by British Airways. (BA 171)
Duration: 8:20, non-stop
Boeing 787-8 (788)
Direct Codeshare Flights:
Finnair AY5421
16:00
London Heathrow (LHR) 5

19:20
Pittsburgh (PIT)
Effective 2026-01-14 through 2026-01-21
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by British Airways. (BA 171)
Duration: 8:20, non-stop
Boeing 787-9 (789)
Direct Codeshare Flights:
Finnair AY5421
16:00
London Heathrow (LHR) 5

19:20
Pittsburgh (PIT)
Effective 2026-01-23 through 2026-02-02
Mon
Tue
-
Wed
Thu
-
Fri
Sat
Sun
-
Codeshare flight, operated by British Airways. (BA 171)
Duration: 8:20, non-stop
Boeing 787-8 (788)
Direct Codeshare Flights:
Finnair AY5421
16:00
London Heathrow (LHR) 5

19:20
Pittsburgh (PIT)
Effective 2026-02-06 through 2026-02-09
Mon
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by British Airways. (BA 171)
Duration: 8:20, non-stop
Boeing 787-8 (788)
Direct Codeshare Flights:
Finnair AY5421
16:00
London Heathrow (LHR) 5

19:20
Pittsburgh (PIT)
Effective 2026-02-07 through 2026-02-14
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
Sun
-
Codeshare flight, operated by British Airways. (BA 171)
Duration: 8:20, non-stop
Boeing 787-10 (781)
Direct Codeshare Flights:
Finnair AY5421
16:00
London Heathrow (LHR) 5

19:20
Pittsburgh (PIT)
Operates only on 2026-02-11
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by British Airways. (BA 171)
Duration: 8:20, non-stop
Boeing 787-9 (789)
Direct Codeshare Flights:
Finnair AY5421
16:00
London Heathrow (LHR) 5

19:20
Pittsburgh (PIT)
Effective 2026-02-16 through 2026-02-28
Mon
Tue
-
Wed
Thu
-
Fri
Sat
Sun
-
Codeshare flight, operated by British Airways. (BA 171)
Duration: 8:20, non-stop
Boeing 787-8 (788)
Direct Codeshare Flights:
Finnair AY5421
16:00
London Heathrow (LHR) 5

19:20
Pittsburgh (PIT)
Effective 2026-03-04 through 2026-03-06
Mon
-
Tue
-
Wed
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by British Airways. (BA 171)
Duration: 8:20, non-stop
Boeing 787-8 (788)
Direct Codeshare Flights:
Finnair AY5421
16:00
London Heathrow (LHR) 5

20:20
Pittsburgh (PIT)
Effective 2026-03-09 through 2026-03-28
Mon
Tue
-
Wed
Thu
-
Fri
Sat
Sun
-
Codeshare flight, operated by British Airways. (BA 171)
Duration: 8:20, non-stop
Boeing 787-8 (788)
Direct Codeshare Flights:
Finnair AY5421
16:00
London Heathrow (LHR) 5

20:20
Pittsburgh (PIT)
Effective from 2026-10-26
Mon
Tue
-
Wed
Thu
-
Fri
Sat
Sun
-
Codeshare flight, operated by British Airways. (BA 171)
Duration: 8:20, non-stop
Boeing 787-8 (788)
Direct Codeshare Flights:
Finnair AY5421
16:40
London Heathrow (LHR) 5

19:50
Pittsburgh (PIT)
Effective 2026-03-29 through 2026-04-06
Mon
Tue
-
Wed
-
Thu
Fri
Sat
Sun
Codeshare flight, operated by British Airways. (BA 171)
Duration: 8:10, non-stop
Boeing 787-8 (788)
Direct Codeshare Flights:
Finnair AY5421
16:40
London Heathrow (LHR) 5

19:50
Pittsburgh (PIT)
Operates only on 2026-03-31
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by British Airways. (BA 171)
Duration: 8:10, non-stop
Boeing 787-10 (781)
Direct Codeshare Flights:
Finnair AY5421
16:40
London Heathrow (LHR) 5

19:50
Pittsburgh (PIT)
Operates only on 2026-04-01
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by British Airways. (BA 171)
Duration: 8:10, non-stop
Boeing 787-9 (789)
Direct Codeshare Flights:
Finnair AY5421
16:40
London Heathrow (LHR) 5

19:50
Pittsburgh (PIT)
Effective 2026-04-07 through 2026-04-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by British Airways. (BA 171)
Duration: 8:10, non-stop
Boeing 787-8 (788)
Direct Codeshare Flights:
Finnair AY5421
16:40
London Heathrow (LHR) 5

19:50
Pittsburgh (PIT)
Effective 2026-04-22 through 2026-04-29
Mon
Tue
-
Wed
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by British Airways. (BA 171)
Duration: 8:10, non-stop
Boeing 787-9 (789)
Direct Codeshare Flights:
Finnair AY5421
16:40
London Heathrow (LHR) 5

19:50
Pittsburgh (PIT)
Effective 2026-04-23 through 2026-04-28
Mon
-
Tue
Wed
-
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by British Airways. (BA 171)
Duration: 8:10, non-stop
Boeing 787-8 (788)
Direct Codeshare Flights:
Finnair AY5421
16:40
London Heathrow (LHR) 5

19:50
Pittsburgh (PIT)
Effective 2026-04-30 through 2026-05-06
Mon
-
Tue
Wed
Thu
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by British Airways. (BA 171)
Duration: 8:10, non-stop
Boeing 787-9 (789)
Direct Codeshare Flights:
Finnair AY5421
16:40
London Heathrow (LHR) 5

19:50
Pittsburgh (PIT)
Effective 2026-05-01 through 2026-05-08
Mon
Tue
-
Wed
-
Thu
Fri
Sat
Sun
Codeshare flight, operated by British Airways. (BA 171)
Duration: 8:10, non-stop
Boeing 787-8 (788)
Direct Codeshare Flights:
Finnair AY5421
16:40
London Heathrow (LHR) 5

19:50
Pittsburgh (PIT)
Effective 2026-05-09 through 2026-05-14
Mon
-
Tue
Wed
Thu
Fri
-
Sat
Sun
-
Codeshare flight, operated by British Airways. (BA 171)
Duration: 8:10, non-stop
Boeing 787-9 (789)
Direct Codeshare Flights:
Finnair AY5421
16:40
London Heathrow (LHR) 5

19:50
Pittsburgh (PIT)
Effective 2026-05-10 through 2026-05-17
Mon
Tue
-
Wed
-
Thu
-
Fri
Sat
Sun
Codeshare flight, operated by British Airways. (BA 171)
Duration: 8:10, non-stop
Boeing 787-8 (788)
Direct Codeshare Flights:
Finnair AY5421
16:40
London Heathrow (LHR) 5

19:50
Pittsburgh (PIT)
Effective 2026-05-18 through 2026-05-24
Mon
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
Codeshare flight, operated by British Airways. (BA 171)
Duration: 8:10, non-stop
Boeing 787-9 (789)
Direct Codeshare Flights:
Finnair AY5421
16:40
London Heathrow (LHR) 5

19:50
Pittsburgh (PIT)
Effective 2026-05-21 through 2026-05-25
Mon
Tue
-
Wed
-
Thu
Fri
Sat
Sun
-
Codeshare flight, operated by British Airways. (BA 171)
Duration: 8:10, non-stop
Boeing 787-8 (788)
Direct Codeshare Flights:
Finnair AY5421
16:40
London Heathrow (LHR) 5

19:50
Pittsburgh (PIT)
Effective 2026-05-26 through 2026-06-10
Mon
-
Tue
Wed
Thu
Fri
-
Sat
-
Sun
Codeshare flight, operated by British Airways. (BA 171)
Duration: 8:10, non-stop
Boeing 787-9 (789)
Direct Codeshare Flights:
Finnair AY5421
16:40
London Heathrow (LHR) 5

19:50
Pittsburgh (PIT)
Effective 2026-05-29 through 2026-06-08
Mon
Tue
-
Wed
-
Thu
-
Fri
Sat
Sun
-
Codeshare flight, operated by British Airways. (BA 171)
Duration: 8:10, non-stop
Boeing 787-8 (788)
Direct Codeshare Flights:
Finnair AY5421
16:40
London Heathrow (LHR) 5

19:50
Pittsburgh (PIT)
Effective 2026-06-11 through 2026-06-22
Mon
Tue
-
Wed
-
Thu
Fri
Sat
Sun
-
Codeshare flight, operated by British Airways. (BA 171)
Duration: 8:10, non-stop
Boeing 787-8 (788)
Direct Codeshare Flights:
Finnair AY5421
16:40
London Heathrow (LHR) 5

19:50
Pittsburgh (PIT)
Effective 2026-06-14 through 2026-06-23
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
Codeshare flight, operated by British Airways. (BA 171)
Duration: 8:10, non-stop
Boeing 787-9 (789)
Direct Codeshare Flights:
Finnair AY5421
16:40
London Heathrow (LHR) 5

19:50
Pittsburgh (PIT)
Effective 2026-06-24 through 2026-07-01
Mon
Tue
Wed
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by British Airways. (BA 171)
Duration: 8:10, non-stop
Boeing 787-8 (788)
Direct Codeshare Flights:
Finnair AY5421
16:40
London Heathrow (LHR) 5

19:50
Pittsburgh (PIT)
Effective 2026-06-25 through 2026-06-28
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
Sun
Codeshare flight, operated by British Airways. (BA 171)
Duration: 8:10, non-stop
Boeing 787-9 (789)
Direct Codeshare Flights:
Finnair AY5421
16:40
London Heathrow (LHR) 5

19:50
Pittsburgh (PIT)
Effective 2026-07-02 through 2026-07-27
Mon
Tue
-
Wed
Thu
Fri
Sat
Sun
-
Codeshare flight, operated by British Airways. (BA 171)
Duration: 8:10, non-stop
Boeing 787-8 (788)
Direct Codeshare Flights:
Finnair AY5421
16:40
London Heathrow (LHR) 5

19:50
Pittsburgh (PIT)
Effective 2026-07-05 through 2026-07-26
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Codeshare flight, operated by British Airways. (BA 171)
Duration: 8:10, non-stop
Boeing 787-9 (789)
Direct Codeshare Flights:
Finnair AY5421
16:40
London Heathrow (LHR) 5

19:50
Pittsburgh (PIT)
Effective 2026-07-28 through 2026-08-03
Mon
Tue
Wed
Thu
Fri
-
Sat
Sun
-
Codeshare flight, operated by British Airways. (BA 171)
Duration: 8:10, non-stop
Boeing 787-8 (788)
Direct Codeshare Flights:
Finnair AY5421
16:40
London Heathrow (LHR) 5

19:50
Pittsburgh (PIT)
Effective 2026-07-31 through 2026-08-06
Mon
-
Tue
Wed
-
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by British Airways. (BA 171)
Duration: 8:10, non-stop
Boeing 787-9 (789)
Direct Codeshare Flights:
Finnair AY5421
16:40
London Heathrow (LHR) 5

19:50
Pittsburgh (PIT)
Effective 2026-08-05 through 2026-08-15
Mon
-
Tue
-
Wed
Thu
-
Fri
Sat
Sun
-
Codeshare flight, operated by British Airways. (BA 171)
Duration: 8:10, non-stop
Boeing 787-8 (788)
Direct Codeshare Flights:
Finnair AY5421
16:40
London Heathrow (LHR) 5

19:50
Pittsburgh (PIT)
Effective 2026-08-09 through 2026-08-16
Mon
Tue
Wed
-
Thu
Fri
-
Sat
-
Sun
Codeshare flight, operated by British Airways. (BA 171)
Duration: 8:10, non-stop
Boeing 787-9 (789)
Direct Codeshare Flights:
Finnair AY5421
16:40
London Heathrow (LHR) 5

19:50
Pittsburgh (PIT)
Effective 2026-08-17 through 2026-08-26
Mon
Tue
-
Wed
Thu
-
Fri
Sat
Sun
-
Codeshare flight, operated by British Airways. (BA 171)
Duration: 8:10, non-stop
Boeing 787-8 (788)
Direct Codeshare Flights:
Finnair AY5421
16:40
London Heathrow (LHR) 5

19:50
Pittsburgh (PIT)
Effective 2026-08-18 through 2026-08-25
Mon
-
Tue
Wed
-
Thu
Fri
-
Sat
-
Sun
Codeshare flight, operated by British Airways. (BA 171)
Duration: 8:10, non-stop
Boeing 787-9 (789)
Direct Codeshare Flights:
Finnair AY5421
16:40
London Heathrow (LHR) 5

19:50
Pittsburgh (PIT)
Effective 2026-08-27 through 2026-08-29
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
Sun
-
Codeshare flight, operated by British Airways. (BA 171)
Duration: 8:10, non-stop
Boeing 787-8 (788)
Direct Codeshare Flights:
Finnair AY5421
16:40
London Heathrow (LHR) 5

19:50
Pittsburgh (PIT)
Effective 2026-08-30 through 2026-09-10
Mon
Tue
Wed
Thu
Fri
-
Sat
-
Sun
Codeshare flight, operated by British Airways. (BA 171)
Duration: 8:10, non-stop
Boeing 787-9 (789)
Direct Codeshare Flights:
Finnair AY5421
16:40
London Heathrow (LHR) 5

19:50
Pittsburgh (PIT)
Effective 2026-09-04 through 2026-09-11
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
Sun
-
Codeshare flight, operated by British Airways. (BA 171)
Duration: 8:10, non-stop
Boeing 787-8 (788)
Direct Codeshare Flights:
Finnair AY5421
16:40
London Heathrow (LHR) 5

19:50
Pittsburgh (PIT)
Effective 2026-09-12 through 2026-09-22
Mon
Tue
Wed
Thu
Fri
-
Sat
Sun
Codeshare flight, operated by British Airways. (BA 171)
Duration: 8:10, non-stop
Boeing 787-9 (789)
Direct Codeshare Flights:
Finnair AY5421
16:40
London Heathrow (LHR) 5

19:50
Pittsburgh (PIT)
Effective 2026-09-18 through 2026-09-25
Mon
-
Tue
-
Wed
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by British Airways. (BA 171)
Duration: 8:10, non-stop
Boeing 787-8 (788)
Direct Codeshare Flights:
Finnair AY5421
16:40
London Heathrow (LHR) 5

19:50
Pittsburgh (PIT)
Effective 2026-09-24 through 2026-10-04
Mon
Tue
Wed
Thu
Fri
-
Sat
Sun
Codeshare flight, operated by British Airways. (BA 171)
Duration: 8:10, non-stop
Boeing 787-9 (789)
Direct Codeshare Flights:
Finnair AY5421
16:40
London Heathrow (LHR) 5

19:50
Pittsburgh (PIT)
Effective 2026-10-02 through 2026-10-09
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Codeshare flight, operated by British Airways. (BA 171)
Duration: 8:10, non-stop
Boeing 787-8 (788)
Direct Codeshare Flights:
Finnair AY5421
16:40
London Heathrow (LHR) 5

19:50
Pittsburgh (PIT)
Effective 2026-10-06 through 2026-10-21
Mon
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
Codeshare flight, operated by British Airways. (BA 171)
Duration: 8:10, non-stop
Boeing 787-9 (789)
Direct Codeshare Flights:
Finnair AY5421
16:40
London Heathrow (LHR) 5

19:50
Pittsburgh (PIT)
Effective 2026-10-10 through 2026-10-24
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
Sun
-
Codeshare flight, operated by British Airways. (BA 171)
Duration: 8:10, non-stop
Boeing 787-8 (788)
  • An international route departing from London Heathrow airport, United Kingdom (LHR) and arriving at Pittsburgh airport, United States (PIT).
  • The flight distance is 3708 miles, or 5967 km.
  • The timezone of the departure airport is UTC+0 , and the timezone of the arrival airport is UTC-5 . 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 8:10 and 8:20.
All LHR-PIT flights
All Finnair flights
Return (PIT-LHR) flights
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