Finnair flight AY 4275: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Wed 12:30 Los Angeles (LAX) 19:04 Chicago O'Hare (ORD) 3
AY 4275 Non-stop Boeing 787-9 (789) 4:34 Operates only on 2025-07-09
Codeshare flight, operated by American Airlines.(AA 2321)
Wed 12:30 Los Angeles (LAX) 19:04 Chicago O'Hare (ORD) 3
AY 4275 Non-stop Boeing 787-9 (789) 4:34 Operates only on 2025-07-23
Codeshare flight, operated by American Airlines.(AA 2321)
Daily 13:00 Los Angeles (LAX) 19:29 Chicago O'Hare (ORD) 3
AY 4275 Non-stop Boeing 787-9 (789) 4:29 Effective 2025-06-06 through 2025-06-18
Codeshare flight, operated by American Airlines.(AA 2321)
Tue-Sun 13:00 Los Angeles (LAX) 19:29 Chicago O'Hare (ORD) 3
AY 4275 Non-stop Boeing 787-9 (789) 4:29 Effective 2025-06-20 through 2025-06-29
Codeshare flight, operated by American Airlines.(AA 2321)
Mon-Fri 13:00 Los Angeles (LAX) 19:29 Chicago O'Hare (ORD) 3
AY 4275 Non-stop Boeing 787-9 (789) 4:29 Effective 2025-06-30 through 2025-07-04
Codeshare flight, operated by American Airlines.(AA 2321)
Mon,Thu,Fri,Sun 13:21 Los Angeles (LAX) 19:28 Chicago O'Hare (ORD) 3
AY 4275 Non-stop Boeing 737-800 (738) 4:07 Valid until 2025-05-04
Codeshare flight, operated by American Airlines.(AA 1979)
Daily 13:30 Los Angeles (LAX) 19:38 Chicago O'Hare (ORD) 3
AY 4275 Non-stop Boeing 737-800 (738) 4:08 Effective 2025-05-05 through 2025-06-04
Codeshare flight, operated by American Airlines.(AA 1979)
Tue,Thu-Sun 13:30 Los Angeles (LAX) 20:00 Chicago O'Hare (ORD) 3
AY 4275 Non-stop Boeing 787-9 (789) 4:30 Effective 2025-07-05 through 2025-07-13
Codeshare flight, operated by American Airlines.(AA 2321)
Mon,Tue,Thu,Fri,Sun 13:30 Los Angeles (LAX) 20:00 Chicago O'Hare (ORD) 3
AY 4275 Non-stop Boeing 787-9 (789) 4:30 Effective 2025-07-14 through 2025-08-01
Codeshare flight, operated by American Airlines.(AA 2321)
Tue,Sat,Sun 13:30 Los Angeles (LAX) 20:00 Chicago O'Hare (ORD) 3
AY 4275 Non-stop Boeing 787-9 (789) 4:30 Effective 2025-08-02 through 2025-08-05
Codeshare flight, operated by American Airlines.(AA 2321)
Mon-Sat 13:30 Los Angeles (LAX) 20:00 Chicago O'Hare (ORD) 3
AY 4275 Non-stop Airbus A321 (321) 4:30 Effective 2025-08-06 through 2025-08-16
Codeshare flight, operated by American Airlines.(AA 3249)
Mon-Thu,Sat,Sun 13:30 Los Angeles (LAX) 20:00 Chicago O'Hare (ORD) 3
AY 4275 Non-stop Airbus A321 (321) 4:30 Effective 2025-08-17 through 2025-08-25
Codeshare flight, operated by American Airlines.(AA 3249)
Wed,Thu,Sat 13:30 Los Angeles (LAX) 20:00 Chicago O'Hare (ORD) 3
AY 4275 Non-stop Airbus A321 (321) 4:30 Effective 2025-08-27 through 2025-08-30
Codeshare flight, operated by American Airlines.(AA 3249)
Daily 18:00 Philadelphia (PHL) A 08:20 Rome Leonardo da Vinci Fiumicino (FCO) 3
AY 4275 Non-stop Boeing 787-8 (788) 8:20 Effective 2025-09-03 through 2025-10-05
Codeshare flight, operated by American Airlines.(AA 772)
The flight arrives 1 day after departure.
Daily 18:10 Philadelphia (PHL) A 08:20 Rome Leonardo da Vinci Fiumicino (FCO) 3
AY 4275 Non-stop Boeing 787-8 (788) 8:10 Effective 2025-10-06 through 2025-10-24
Codeshare flight, operated by American Airlines.(AA 772)
The flight arrives 1 day after departure.
Tue,Thu,Sun 22:59 Los Angeles (LAX) 05:12 Chicago O'Hare (ORD) 3
AY 4275 Non-stop Boeing 737-800 (738) 4:13 Effective 2025-12-04 through 2026-01-04
Codeshare flight, operated by American Airlines.(AA 3141)
The flight arrives 1 day after departure.
Tue,Thu,Sun 22:59 Los Angeles (LAX) 05:05 Chicago O'Hare (ORD) 3
AY 4275 Non-stop Boeing 737-800 (738) 4:06 Effective 2026-01-06 through 2026-02-10
Codeshare flight, operated by American Airlines.(AA 2742)
The flight arrives 1 day after departure.
Tue,Thu,Sun 23:03 Los Angeles (LAX) 05:14 Chicago O'Hare (ORD) 3
AY 4275 Non-stop Boeing 737-800 (738) 4:11 Effective 2025-10-26 through 2025-10-30
Codeshare flight, operated by American Airlines.(AA 2122)
The flight arrives 1 day after departure.
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This flight number is listed as serving the following routes:


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Finnair flight AY 4275: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Finnair AY4275
12:30
Los Angeles (LAX)

19:04
Chicago O'Hare (ORD) 3
Operates only on 2025-07-09
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 2321)
Duration: 4:34, non-stop
Boeing 787-9 (789)
Finnair AY4275
12:30
Los Angeles (LAX)

19:04
Chicago O'Hare (ORD) 3
Operates only on 2025-07-23
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 2321)
Duration: 4:34, non-stop
Boeing 787-9 (789)
Finnair AY4275
13:00
Los Angeles (LAX)

19:29
Chicago O'Hare (ORD) 3
Effective 2025-06-06 through 2025-06-18
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2321)
Duration: 4:29, non-stop
Boeing 787-9 (789)
Finnair AY4275
13:00
Los Angeles (LAX)

19:29
Chicago O'Hare (ORD) 3
Effective 2025-06-20 through 2025-06-29
Mon
-
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2321)
Duration: 4:29, non-stop
Boeing 787-9 (789)
Finnair AY4275
13:00
Los Angeles (LAX)

19:29
Chicago O'Hare (ORD) 3
Effective 2025-06-30 through 2025-07-04
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 2321)
Duration: 4:29, non-stop
Boeing 787-9 (789)
Finnair AY4275
13:21
Los Angeles (LAX)

19:28
Chicago O'Hare (ORD) 3
Valid until 2025-05-04
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by American Airlines. (AA 1979)
Duration: 4:07, non-stop
Boeing 737-800 (738)
Finnair AY4275
13:30
Los Angeles (LAX)

19:38
Chicago O'Hare (ORD) 3
Effective 2025-05-05 through 2025-06-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 1979)
Duration: 4:08, non-stop
Boeing 737-800 (738)
Finnair AY4275
13:30
Los Angeles (LAX)

20:00
Chicago O'Hare (ORD) 3
Effective 2025-07-05 through 2025-07-13
Mon
-
Tue
Wed
-
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2321)
Duration: 4:30, non-stop
Boeing 787-9 (789)
Finnair AY4275
13:30
Los Angeles (LAX)

20:00
Chicago O'Hare (ORD) 3
Effective 2025-07-14 through 2025-08-01
Mon
Tue
Wed
-
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by American Airlines. (AA 2321)
Duration: 4:30, non-stop
Boeing 787-9 (789)
Finnair AY4275
13:30
Los Angeles (LAX)

20:00
Chicago O'Hare (ORD) 3
Effective 2025-08-02 through 2025-08-05
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2321)
Duration: 4:30, non-stop
Boeing 787-9 (789)
Finnair AY4275
13:30
Los Angeles (LAX)

20:00
Chicago O'Hare (ORD) 3
Effective 2025-08-06 through 2025-08-16
Mon
Tue
Wed
Thu
Fri
Sat
Sun
-
Codeshare flight, operated by American Airlines. (AA 3249)
Duration: 4:30, non-stop
Airbus A321 (321)
Finnair AY4275
13:30
Los Angeles (LAX)

20:00
Chicago O'Hare (ORD) 3
Effective 2025-08-17 through 2025-08-25
Mon
Tue
Wed
Thu
Fri
-
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 3249)
Duration: 4:30, non-stop
Airbus A321 (321)
Finnair AY4275
13:30
Los Angeles (LAX)

20:00
Chicago O'Hare (ORD) 3
Effective 2025-08-27 through 2025-08-30
Mon
-
Tue
-
Wed
Thu
Fri
-
Sat
Sun
-
Codeshare flight, operated by American Airlines. (AA 3249)
Duration: 4:30, non-stop
Airbus A321 (321)
Finnair AY4275
18:00
Philadelphia (PHL) A

08:20(+1)
Rome Leonardo da Vinci Fiumicino (FCO) 3
Effective 2025-09-03 through 2025-10-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 772)
Duration: 8:20, non-stop
Boeing 787-8 (788)
The flight arrives 1 day after departure.
Finnair AY4275
18:10
Philadelphia (PHL) A

08:20(+1)
Rome Leonardo da Vinci Fiumicino (FCO) 3
Effective 2025-10-06 through 2025-10-24
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 772)
Duration: 8:10, non-stop
Boeing 787-8 (788)
The flight arrives 1 day after departure.
Finnair AY4275
22:59
Los Angeles (LAX)

05:12(+1)
Chicago O'Hare (ORD) 3
Effective 2025-12-04 through 2026-01-04
Mon
-
Tue
Wed
-
Thu
Fri
-
Sat
-
Sun
Codeshare flight, operated by American Airlines. (AA 3141)
Duration: 4:13, non-stop
Boeing 737-800 (738)
The flight arrives 1 day after departure.
Finnair AY4275
22:59
Los Angeles (LAX)

05:05(+1)
Chicago O'Hare (ORD) 3
Effective 2026-01-06 through 2026-02-10
Mon
-
Tue
Wed
-
Thu
Fri
-
Sat
-
Sun
Codeshare flight, operated by American Airlines. (AA 2742)
Duration: 4:06, non-stop
Boeing 737-800 (738)
The flight arrives 1 day after departure.
Finnair AY4275
23:03
Los Angeles (LAX)

05:14(+1)
Chicago O'Hare (ORD) 3
Effective 2025-10-26 through 2025-10-30
Mon
-
Tue
Wed
-
Thu
Fri
-
Sat
-
Sun
Codeshare flight, operated by American Airlines. (AA 2122)
Duration: 4:11, non-stop
Boeing 737-800 (738)
The flight arrives 1 day after departure.
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This flight number is listed as serving the following routes:
  • Los Angeles (LAX) - Chicago O'Hare (ORD)
  • Philadelphia (PHL) - Rome Leonardo da Vinci Fiumicino (FCO)
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