Finnair flight AY 4157: Multiple routes

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FLIGHT SCHEDULE
Direct Codeshare Flights:
Mon,Fri 11:14 Portland (PDX) 17:20 Chicago O'Hare (ORD) 3
AY 4157 Non-stop Boeing 737-800 (738) 4:06 Effective 2025-05-05 through 2025-05-09
Codeshare flight, operated by American Airlines.(AA 1195)
Sun 16:32 George Bush, Houston (IAH) A 19:35 Chicago O'Hare (ORD) 3
AY 4157 Non-stop Embraer EMB 175 (E75) 3:03 Effective 2025-06-08 through 2025-06-29
Codeshare flight, operated by American Airlines.(AA 4296)
Thu,Fri,Sun 16:33 George Bush, Houston (IAH) A 19:43 Chicago O'Hare (ORD) 3
AY 4157 Non-stop Embraer EMB 175 (E75) 3:10 Effective 2025-07-06 through 2025-07-13
Codeshare flight, operated by American Airlines.(AA 4591)
Mon,Thu,Fri,Sun 16:33 George Bush, Houston (IAH) A 19:43 Chicago O'Hare (ORD) 3
AY 4157 Non-stop Embraer EMB 175 (E75) 3:10 Effective 2025-07-14 through 2025-08-03
Codeshare flight, operated by American Airlines.(AA 4591)
Mon-Sat 16:33 George Bush, Houston (IAH) A 19:43 Chicago O'Hare (ORD) 3
AY 4157 Non-stop Embraer EMB 175 (E75) 3:10 Effective 2025-08-06 through 2025-08-16
Codeshare flight, operated by American Airlines.(AA 4591)
Mon-Thu,Sat,Sun 16:33 George Bush, Houston (IAH) A 19:43 Chicago O'Hare (ORD) 3
AY 4157 Non-stop Embraer EMB 175 (E75) 3:10 Effective 2025-08-17 through 2025-08-25
Codeshare flight, operated by American Airlines.(AA 4591)
Wed,Thu,Sat 16:33 George Bush, Houston (IAH) A 19:43 Chicago O'Hare (ORD) 3
AY 4157 Non-stop Embraer EMB 175 (E75) 3:10 Effective 2025-08-27 through 2025-08-30
Codeshare flight, operated by American Airlines.(AA 4591)
Mon,Thu 16:50 Dallas Fort Worth (DFW) 20:42 Miami (MIA)
AY 4157 Non-stop Boeing 737 MAX 8 (7M8) 2:52 Effective 2025-05-19 through 2025-05-22
Codeshare flight, operated by American Airlines.(AA 3279)
Mon,Tue,Thu,Fri,Sun 16:57 George Bush, Houston (IAH) A 19:39 Chicago O'Hare (ORD) 3
AY 4157 Non-stop Airbus A319 (319) 2:42 Valid until 2025-05-04
Codeshare flight, operated by American Airlines.(AA 1168)
Wed 16:59 Chicago O'Hare (ORD) 3 20:20 New York John F. Kennedy (JFK) 8
AY 4157 Non-stop Airbus A319 (319) 2:21 Operates only on 2025-06-11
Codeshare flight, operated by American Airlines.(AA 2091)
Wed 16:59 Chicago O'Hare (ORD) 3 20:20 New York John F. Kennedy (JFK) 8
AY 4157 Non-stop Airbus A319 (319) 2:21 Operates only on 2025-06-25
Codeshare flight, operated by American Airlines.(AA 2091)
Wed 17:07 Kansas City (MCI) 18:47 Chicago O'Hare (ORD) 3
AY 4157 Non-stop Airbus A319 (319) 1:40 Operates only on 2025-07-02
Codeshare flight, operated by American Airlines.(AA 3134)
Wed 17:38 Memphis (MEM) 19:33 Chicago O'Hare (ORD) 3
AY 4157 Non-stop Canadair CRJ 700 (CR7) 1:55 Effective 2025-05-07 through 2025-06-04
Codeshare flight, operated by American Airlines.(AA 6384)
Wed 17:40 Seattle-Tacoma (SEA) 20:44 Phoenix Sky Harbor (PHX) 4
AY 4157 Non-stop Embraer EMB 175 (E75) 3:04 Effective 2025-07-09 through 2025-07-23
Codeshare flight, operated by American Airlines.(AA 6337)
Mon,Thu 17:52 Detroit (DTW) E 18:24 Chicago O'Hare (ORD) 3
AY 4157 Non-stop Embraer EMB 175 (E75) 1:32 Effective 2025-05-26 through 2025-06-02
Codeshare flight, operated by American Airlines.(AA 4707)
Thu 20:30 New York John F. Kennedy (JFK) 8 22:20 Pittsburgh (PIT)
AY 4157 Non-stop Embraer EMB 175 (E75) 1:50 Effective 2025-06-05 through 2025-06-12
Codeshare flight, operated by American Airlines.(AA 4611)
Mon,Thu,Fri 20:30 New York John F. Kennedy (JFK) 8 22:20 Pittsburgh (PIT)
AY 4157 Non-stop Embraer EMB 175 (E75) 1:50 Effective 2025-06-13 through 2025-06-19
Codeshare flight, operated by American Airlines.(AA 4611)
Thu,Fri 20:30 New York John F. Kennedy (JFK) 8 22:20 Pittsburgh (PIT)
AY 4157 Non-stop Embraer EMB 175 (E75) 1:50 Effective 2025-06-26 through 2025-06-27
Codeshare flight, operated by American Airlines.(AA 4611)
Fri 20:40 Chicago O'Hare (ORD) 3 23:51 Atlanta (ATL) N
AY 4157 Non-stop Boeing 737-800 (738) 2:11 Operates only on 2025-05-30
Codeshare flight, operated by American Airlines.(AA 2779)
Mon,Thu 21:30 Dallas Fort Worth (DFW) 22:44 George Bush, Houston (IAH) A
AY 4157 Non-stop Airbus A321 (321) 1:14 Effective 2025-05-08 through 2025-05-15
Codeshare flight, operated by American Airlines.(AA 3124)
Fri 22:00 Chicago O'Hare (ORD) 3 00:29 Detroit (DTW) E
AY 4157 Non-stop Embraer EMB 175 (E75) 1:29 Effective 2025-05-16 through 2025-05-23
Codeshare flight, operated by American Airlines.(AA 4366)
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 4157: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Finnair AY4157
11:14
Portland (PDX)

17:20
Chicago O'Hare (ORD) 3
Effective 2025-05-05 through 2025-05-09
Mon
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 1195)
Duration: 4:06, non-stop
Boeing 737-800 (738)
Finnair AY4157
16:32
George Bush, Houston (IAH) A

19:35
Chicago O'Hare (ORD) 3
Effective 2025-06-08 through 2025-06-29
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Codeshare flight, operated by American Airlines. (AA 4296)
Duration: 3:03, non-stop
Embraer EMB 175 (E75)
Finnair AY4157
16:33
George Bush, Houston (IAH) A

19:43
Chicago O'Hare (ORD) 3
Effective 2025-07-06 through 2025-07-13
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by American Airlines. (AA 4591)
Duration: 3:10, non-stop
Embraer EMB 175 (E75)
Finnair AY4157
16:33
George Bush, Houston (IAH) A

19:43
Chicago O'Hare (ORD) 3
Effective 2025-07-14 through 2025-08-03
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by American Airlines. (AA 4591)
Duration: 3:10, non-stop
Embraer EMB 175 (E75)
Finnair AY4157
16:33
George Bush, Houston (IAH) A

19:43
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 4591)
Duration: 3:10, non-stop
Embraer EMB 175 (E75)
Finnair AY4157
16:33
George Bush, Houston (IAH) A

19:43
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 4591)
Duration: 3:10, non-stop
Embraer EMB 175 (E75)
Finnair AY4157
16:33
George Bush, Houston (IAH) A

19:43
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 4591)
Duration: 3:10, non-stop
Embraer EMB 175 (E75)
Finnair AY4157
16:50
Dallas Fort Worth (DFW)

20:42
Miami (MIA)
Effective 2025-05-19 through 2025-05-22
Mon
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 3279)
Duration: 2:52, non-stop
Boeing 737 MAX 8 (7M8)
Finnair AY4157
16:57
George Bush, Houston (IAH) A

19:39
Chicago O'Hare (ORD) 3
Valid until 2025-05-04
Mon
Tue
Wed
-
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by American Airlines. (AA 1168)
Duration: 2:42, non-stop
Airbus A319 (319)
Finnair AY4157
16:59
Chicago O'Hare (ORD) 3

20:20
New York John F. Kennedy (JFK) 8
Operates only on 2025-06-11
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 2091)
Duration: 2:21, non-stop
Airbus A319 (319)
Finnair AY4157
16:59
Chicago O'Hare (ORD) 3

20:20
New York John F. Kennedy (JFK) 8
Operates only on 2025-06-25
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 2091)
Duration: 2:21, non-stop
Airbus A319 (319)
Finnair AY4157
17:07
Kansas City (MCI)

18:47
Chicago O'Hare (ORD) 3
Operates only on 2025-07-02
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 3134)
Duration: 1:40, non-stop
Airbus A319 (319)
Finnair AY4157
17:38
Memphis (MEM)

19:33
Chicago O'Hare (ORD) 3
Effective 2025-05-07 through 2025-06-04
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 6384)
Duration: 1:55, non-stop
Canadair CRJ 700 (CR7)
Finnair AY4157
17:40
Seattle-Tacoma (SEA)

20:44
Phoenix Sky Harbor (PHX) 4
Effective 2025-07-09 through 2025-07-23
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 6337)
Duration: 3:04, non-stop
Embraer EMB 175 (E75)
Finnair AY4157
17:52
Detroit (DTW) E

18:24
Chicago O'Hare (ORD) 3
Effective 2025-05-26 through 2025-06-02
Mon
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 4707)
Duration: 1:32, non-stop
Embraer EMB 175 (E75)
Finnair AY4157
20:30
New York John F. Kennedy (JFK) 8

22:20
Pittsburgh (PIT)
Effective 2025-06-05 through 2025-06-12
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 4611)
Duration: 1:50, non-stop
Embraer EMB 175 (E75)
Finnair AY4157
20:30
New York John F. Kennedy (JFK) 8

22:20
Pittsburgh (PIT)
Effective 2025-06-13 through 2025-06-19
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 4611)
Duration: 1:50, non-stop
Embraer EMB 175 (E75)
Finnair AY4157
20:30
New York John F. Kennedy (JFK) 8

22:20
Pittsburgh (PIT)
Effective 2025-06-26 through 2025-06-27
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 4611)
Duration: 1:50, non-stop
Embraer EMB 175 (E75)
Finnair AY4157
20:40
Chicago O'Hare (ORD) 3

23:51
Atlanta (ATL) N
Operates only on 2025-05-30
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 2779)
Duration: 2:11, non-stop
Boeing 737-800 (738)
Finnair AY4157
21:30
Dallas Fort Worth (DFW)

22:44
George Bush, Houston (IAH) A
Effective 2025-05-08 through 2025-05-15
Mon
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 3124)
Duration: 1:14, non-stop
Airbus A321 (321)
Finnair AY4157
22:00
Chicago O'Hare (ORD) 3

00:29(+1)
Detroit (DTW) E
Effective 2025-05-16 through 2025-05-23
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 4366)
Duration: 1:29, non-stop
Embraer EMB 175 (E75)
The flight arrives 1 day after departure.
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This flight number is listed as serving the following routes:
  • Chicago O'Hare (ORD) - Atlanta (ATL)
  • Chicago O'Hare (ORD) - New York John F. Kennedy (JFK)
  • Dallas Fort Worth (DFW) - George Bush, Houston (IAH)
  • Dallas Fort Worth (DFW) - Miami (MIA)
  • Detroit (DTW) - Chicago O'Hare (ORD)
  • George Bush, Houston (IAH) - Chicago O'Hare (ORD)
  • Kansas City (MCI) - Chicago O'Hare (ORD)
  • Memphis (MEM) - Chicago O'Hare (ORD)
  • New York John F. Kennedy (JFK) - Pittsburgh (PIT)
  • Portland (PDX) - Chicago O'Hare (ORD)
  • Seattle-Tacoma (SEA) - Phoenix Sky Harbor (PHX)
All Finnair flights
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