Finnair flight AY 3665: Multiple routes

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FLIGHT SCHEDULE
Direct Codeshare Flights:
Daily 13:14 Boise (BOI) 17:54 Chicago O'Hare (ORD) 3
AY 3665 Non-stop Embraer EMB 175 (E75) 3:40 Effective 2026-08-05 through 2026-08-14
Codeshare flight, operated by American Airlines.(AA 3368)
Tue-Fri,Sun 13:14 Boise (BOI) 17:54 Chicago O'Hare (ORD) 3
AY 3665 Non-stop Embraer EMB 175 (E75) 3:40 Effective 2026-08-16 through 2026-09-01
Codeshare flight, operated by American Airlines.(AA 3368)
Tue 13:14 Boise (BOI) 17:54 Chicago O'Hare (ORD) 3
AY 3665 Non-stop Embraer EMB 175 (E75) 3:40 Operates only on 2026-09-08
Codeshare flight, operated by American Airlines.(AA 3368)
Tue-Sun 13:18 Boise (BOI) 17:55 Chicago O'Hare (ORD) 3
AY 3665 Non-stop Airbus A319 (319) 3:37 Effective 2026-09-09 through 2026-09-27
Codeshare flight, operated by American Airlines.(AA 2262)
Daily 13:18 Boise (BOI) 17:55 Chicago O'Hare (ORD) 3
AY 3665 Non-stop Airbus A319 (319) 3:37 Effective 2026-09-28 through 2026-10-04
Codeshare flight, operated by American Airlines.(AA 2262)
Mon-Fri,Sun 14:19 Phoenix Sky Harbor (PHX) 4 21:05 New York John F. Kennedy (JFK) 8
AY 3665 Non-stop Boeing 737-800 (738) 4:46 Valid until 2026-01-05
Codeshare flight, operated by American Airlines.(AA 1919Z)
Daily 14:57 Boise (BOI) 19:45 Chicago O'Hare (ORD) 3
AY 3665 Non-stop Airbus A319 (319) 3:48 Effective 2026-10-05 through 2026-10-23
Codeshare flight, operated by American Airlines.(AA 2353Z)
Tue,Fri 14:57 Boise (BOI) 19:45 Chicago O'Hare (ORD) 3
AY 3665 Non-stop Airbus A319 (319) 3:48 Effective from 2026-10-27
Codeshare flight, operated by American Airlines.(AA 2353Z)
Daily 15:30 New York John F. Kennedy (JFK) 8 19:21 Phoenix Sky Harbor (PHX) 4
AY 3665 Non-stop Boeing 737 MAX 8 (7M8) 5:51 Effective 2026-01-06 through 2026-02-11
Codeshare flight, operated by American Airlines.(AA 636)
Daily 15:59 New York John F. Kennedy (JFK) 8 19:57 Phoenix Sky Harbor (PHX) 4
AY 3665 Non-stop Boeing 737 MAX 8 (7M8) 5:58 Effective 2026-02-12 through 2026-03-07
Codeshare flight, operated by American Airlines.(AA 636)
Mon,Wed,Thu,Sat,Sun 17:27 Louisville (SDF) 18:00 Chicago O'Hare (ORD) 3
AY 3665 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:33 Effective 2026-04-08 through 2026-04-30
Codeshare flight, operated by American Airlines.(AA 3849)
Mon-Sat 17:27 Louisville (SDF) 18:00 Chicago O'Hare (ORD) 3
AY 3665 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:33 Effective 2026-05-01 through 2026-05-09
Codeshare flight, operated by American Airlines.(AA 3849)
Sun 17:27 Louisville (SDF) 18:00 Chicago O'Hare (ORD) 3
AY 3665 Non-stop Airbus A319 (319) 1:33 Operates only on 2026-05-03
Codeshare flight, operated by American Airlines.(AA 3276)
Daily 17:27 Louisville (SDF) 18:00 Chicago O'Hare (ORD) 3
AY 3665 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:33 Effective 2026-05-10 through 2026-05-20
Codeshare flight, operated by American Airlines.(AA 3849)
Mon,Wed,Sat 19:09 Miami (MIA) 21:17 Atlanta (ATL) N
AY 3665 Non-stop Boeing 737-800 (738) 2:08 Effective 2026-03-30 through 2026-04-06
Codeshare flight, operated by American Airlines.(AA 2490)
Daily 19:15 Louisville (SDF) 19:50 Chicago O'Hare (ORD) 3
AY 3665 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:35 Effective 2026-07-02 through 2026-08-04
Codeshare flight, operated by American Airlines.(AA 3796)
Daily 19:16 Louisville (SDF) 19:50 Chicago O'Hare (ORD) 3
AY 3665 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:34 Effective 2026-05-21 through 2026-07-01
Codeshare flight, operated by American Airlines.(AA 3785)
Wed-Sun 20:44 Chicago O'Hare (ORD) 3 22:49 Las Vegas Harry Reid (LAS) 1
AY 3665 Non-stop Airbus A321 (321) 4:05 Effective 2026-09-02 through 2026-09-06
Codeshare flight, operated by American Airlines.(AA 3323)
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This flight number is listed as serving the following routes:


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Finnair flight AY 3665: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Finnair AY3665
13:14
Boise (BOI)

17:54
Chicago O'Hare (ORD) 3
Effective 2026-08-05 through 2026-08-14
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 3368)
Duration: 3:40, non-stop
Embraer EMB 175 (E75)
Direct Codeshare Flights:
Finnair AY3665
13:14
Boise (BOI)

17:54
Chicago O'Hare (ORD) 3
Effective 2026-08-16 through 2026-09-01
Mon
-
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by American Airlines. (AA 3368)
Duration: 3:40, non-stop
Embraer EMB 175 (E75)
Direct Codeshare Flights:
Finnair AY3665
13:14
Boise (BOI)

17:54
Chicago O'Hare (ORD) 3
Operates only on 2026-09-08
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by American Airlines. (AA 3368)
Duration: 3:40, non-stop
Embraer EMB 175 (E75)
Direct Codeshare Flights:
Finnair AY3665
13:18
Boise (BOI)

17:55
Chicago O'Hare (ORD) 3
Effective 2026-09-09 through 2026-09-27
Mon
-
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2262)
Duration: 3:37, non-stop
Airbus A319 (319)
Direct Codeshare Flights:
Finnair AY3665
13:18
Boise (BOI)

17:55
Chicago O'Hare (ORD) 3
Effective 2026-09-28 through 2026-10-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 2262)
Duration: 3:37, non-stop
Airbus A319 (319)
Direct Codeshare Flights:
Finnair AY3665
14:19
Phoenix Sky Harbor (PHX) 4

21:05
New York John F. Kennedy (JFK) 8
Valid until 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by American Airlines.(AA 1919Z)
Duration: 4:46, non-stop
Boeing 737-800 (738)
Direct Codeshare Flights:
Finnair AY3665
14:57
Boise (BOI)

19:45
Chicago O'Hare (ORD) 3
Effective 2026-10-05 through 2026-10-23
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines.(AA 2353Z)
Duration: 3:48, non-stop
Airbus A319 (319)
Direct Codeshare Flights:
Finnair AY3665
14:57
Boise (BOI)

19:45
Chicago O'Hare (ORD) 3
Effective from 2026-10-27
Mon
-
Tue
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by American Airlines.(AA 2353Z)
Duration: 3:48, non-stop
Airbus A319 (319)
Direct Codeshare Flights:
Finnair AY3665
15:30
New York John F. Kennedy (JFK) 8

19:21
Phoenix Sky Harbor (PHX) 4
Effective 2026-01-06 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 636)
Duration: 5:51, non-stop
Boeing 737 MAX 8 (7M8)
Direct Codeshare Flights:
Finnair AY3665
15:59
New York John F. Kennedy (JFK) 8

19:57
Phoenix Sky Harbor (PHX) 4
Effective 2026-02-12 through 2026-03-07
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 636)
Duration: 5:58, non-stop
Boeing 737 MAX 8 (7M8)
Direct Codeshare Flights:
Finnair AY3665
17:27
Louisville (SDF)

18:00
Chicago O'Hare (ORD) 3
Effective 2026-04-08 through 2026-04-30
Mon
Tue
-
Wed
Thu
Fri
-
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 3849)
Duration: 1:33, non-stop
Embraer EMB 170 / EMB 175 (E70)
Direct Codeshare Flights:
Finnair AY3665
17:27
Louisville (SDF)

18:00
Chicago O'Hare (ORD) 3
Effective 2026-05-01 through 2026-05-09
Mon
Tue
Wed
Thu
Fri
Sat
Sun
-
Codeshare flight, operated by American Airlines. (AA 3849)
Duration: 1:33, non-stop
Embraer EMB 170 / EMB 175 (E70)
Direct Codeshare Flights:
Finnair AY3665
17:27
Louisville (SDF)

18:00
Chicago O'Hare (ORD) 3
Operates only on 2026-05-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Codeshare flight, operated by American Airlines. (AA 3276)
Duration: 1:33, non-stop
Airbus A319 (319)
Direct Codeshare Flights:
Finnair AY3665
17:27
Louisville (SDF)

18:00
Chicago O'Hare (ORD) 3
Effective 2026-05-10 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 3849)
Duration: 1:33, non-stop
Embraer EMB 170 / EMB 175 (E70)
Direct Codeshare Flights:
Finnair AY3665
19:09
Miami (MIA)

21:17
Atlanta (ATL) N
Effective 2026-03-30 through 2026-04-06
Mon
Tue
-
Wed
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by American Airlines. (AA 2490)
Duration: 2:08, non-stop
Boeing 737-800 (738)
Direct Codeshare Flights:
Finnair AY3665
19:15
Louisville (SDF)

19:50
Chicago O'Hare (ORD) 3
Effective 2026-07-02 through 2026-08-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 3796)
Duration: 1:35, non-stop
Embraer EMB 170 / EMB 175 (E70)
Direct Codeshare Flights:
Finnair AY3665
19:16
Louisville (SDF)

19:50
Chicago O'Hare (ORD) 3
Effective 2026-05-21 through 2026-07-01
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 3785)
Duration: 1:34, non-stop
Embraer EMB 170 / EMB 175 (E70)
Direct Codeshare Flights:
Finnair AY3665
20:44
Chicago O'Hare (ORD) 3

22:49
Las Vegas Harry Reid (LAS) 1
Effective 2026-09-02 through 2026-09-06
Mon
-
Tue
-
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by American Airlines. (AA 3323)
Duration: 4:05, non-stop
Airbus A321 (321)
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This flight number is listed as serving the following routes:
  • Boise (BOI) - Chicago O'Hare (ORD)
  • Chicago O'Hare (ORD) - Las Vegas Harry Reid (LAS)
  • Louisville (SDF) - Chicago O'Hare (ORD)
  • Miami (MIA) - Atlanta (ATL)
  • Phoenix Sky Harbor (PHX) - New York John F. Kennedy (JFK)
All Finnair flights
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