American Airlines flight AA 3991: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Daily 08:03 Fargo (FAR) 10:39 Phoenix Sky Harbor (PHX) 4
AA 3991 Non-stop Embraer EMB 175 (E75) 3:36 Effective from 2026-02-12
Daily 08:05 Fargo (FAR) 10:39 Phoenix Sky Harbor (PHX) 4
AA 3991 Non-stop Embraer EMB 175 (E75) 3:34 Effective 2025-11-02 through 2025-12-17
Daily 08:06 Fargo (FAR) 10:39 Phoenix Sky Harbor (PHX) 4
AA 3991 Non-stop Embraer EMB 175 (E75) 3:33 Effective 2025-12-18 through 2026-02-11
Fri 11:45 Charlotte (CLT) 13:12 Appleton (ATW)
AA 3991 Non-stop Embraer EMB 175 (E75) 2:27 Operates only on 2025-07-04
Daily 13:05 Charlotte (CLT) 14:22 Appleton (ATW)
AA 3991 Non-stop Embraer EMB 175 (E75) 2:17 Effective 2025-09-03 through 2025-10-05
Mon-Sat 13:49 Charlotte (CLT) 15:06 Appleton (ATW)
AA 3991 Non-stop Embraer EMB 175 (E75) 2:17 Effective 2025-06-05 through 2025-07-03
Sun 13:50 Charlotte (CLT) 15:08 Appleton (ATW)
AA 3991 Non-stop Embraer EMB 175 (E75) 2:18 Effective 2025-06-08 through 2025-06-29
Mon-Fri 13:54 Charlotte (CLT) 15:14 Appleton (ATW)
AA 3991 Non-stop Embraer EMB 175 (E75) 2:20 Effective 2025-07-07 through 2025-08-05
Sat,Sun 13:59 Charlotte (CLT) 15:19 Appleton (ATW)
AA 3991 Non-stop Embraer EMB 175 (E75) 2:20 Effective 2025-07-05 through 2025-08-03
Fri 14:00 Appleton (ATW) 17:17 Charlotte (CLT)
AA 3991 Non-stop Embraer EMB 175 (E75) 2:17 Operates only on 2025-07-04
Daily 14:35 Charlotte (CLT) 15:52 Appleton (ATW)
AA 3991 Non-stop Embraer EMB 175 (E75) 2:17 Effective 2025-08-06 through 2025-09-02
Daily 15:40 Appleton (ATW) 18:59 Charlotte (CLT)
AA 3991 Non-stop Embraer EMB 175 (E75) 2:19 Effective 2025-06-05 through 2025-07-03
Daily 15:49 Appleton (ATW) 19:12 Charlotte (CLT)
AA 3991 Non-stop Embraer EMB 175 (E75) 2:23 Effective 2025-07-05 through 2025-08-05
Daily 16:08 Boston Logan (BOS) B 18:21 Saint Louis (STL) 1
AA 3991 Non-stop Embraer EMB 175 (E75) 3:13 Effective 2025-10-26 through 2025-11-01
Mon-Fri,Sun 16:11 Chicago O'Hare (ORD) 3 17:06 Champaign/Urbana (CMI)
AA 3991 Non-stop Embraer EMB 170 / EMB 175 (E70) 0:55 Valid until 2025-05-04
Daily 16:14 Appleton (ATW) 19:40 Charlotte (CLT)
AA 3991 Non-stop Embraer EMB 175 (E75) 2:26 Effective 2025-09-03 through 2025-10-05
Daily 16:22 Appleton (ATW) 19:40 Charlotte (CLT)
AA 3991 Non-stop Embraer EMB 175 (E75) 2:18 Effective 2025-08-06 through 2025-09-02
Sat 16:26 Chicago O'Hare (ORD) 3 17:22 Champaign/Urbana (CMI)
AA 3991 Non-stop Embraer EMB 170 / EMB 175 (E70) 0:56 Valid until 2025-05-03
Mon-Fri,Sun 17:41 Champaign/Urbana (CMI) 18:47 Chicago O'Hare (ORD) 3
AA 3991 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:06 Valid until 2025-05-04
Sat 17:53 Champaign/Urbana (CMI) 18:59 Chicago O'Hare (ORD) 3
AA 3991 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:06 Valid until 2025-05-03
Daily 18:51 Saint Louis (STL) 1 22:24 Boston Logan (BOS) B
AA 3991 Non-stop Embraer EMB 175 (E75) 2:33 Effective 2025-10-26 through 2025-11-01
Daily 19:41 Miami (MIA) 22:09 Oklahoma City (OKC)
AA 3991 Non-stop Embraer EMB 175 (E75) 3:28 Effective 2025-05-05 through 2025-06-04
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This flight number is listed as serving the following routes:


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American Airlines flight AA 3991: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
American Airlines AA3991
08:03
Fargo (FAR)

10:39
Phoenix Sky Harbor (PHX) 4
Effective from 2026-02-12
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 3:36, non-stop
Embraer EMB 175 (E75)
American Airlines AA3991
08:05
Fargo (FAR)

10:39
Phoenix Sky Harbor (PHX) 4
Effective 2025-11-02 through 2025-12-17
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 3:34, non-stop
Embraer EMB 175 (E75)
American Airlines AA3991
08:06
Fargo (FAR)

10:39
Phoenix Sky Harbor (PHX) 4
Effective 2025-12-18 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 3:33, non-stop
Embraer EMB 175 (E75)
American Airlines AA3991
11:45
Charlotte (CLT)

13:12
Appleton (ATW)
Operates only on 2025-07-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 2:27, non-stop
Embraer EMB 175 (E75)
American Airlines AA3991
13:05
Charlotte (CLT)

14:22
Appleton (ATW)
Effective 2025-09-03 through 2025-10-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:17, non-stop
Embraer EMB 175 (E75)
American Airlines AA3991
13:49
Charlotte (CLT)

15:06
Appleton (ATW)
Effective 2025-06-05 through 2025-07-03
Mon
Tue
Wed
Thu
Fri
Sat
Sun
-
Duration: 2:17, non-stop
Embraer EMB 175 (E75)
American Airlines AA3991
13:50
Charlotte (CLT)

15:08
Appleton (ATW)
Effective 2025-06-08 through 2025-06-29
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:18, non-stop
Embraer EMB 175 (E75)
American Airlines AA3991
13:54
Charlotte (CLT)

15:14
Appleton (ATW)
Effective 2025-07-07 through 2025-08-05
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
-
Duration: 2:20, non-stop
Embraer EMB 175 (E75)
American Airlines AA3991
13:59
Charlotte (CLT)

15:19
Appleton (ATW)
Effective 2025-07-05 through 2025-08-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
Duration: 2:20, non-stop
Embraer EMB 175 (E75)
American Airlines AA3991
14:00
Appleton (ATW)

17:17
Charlotte (CLT)
Operates only on 2025-07-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 2:17, non-stop
Embraer EMB 175 (E75)
American Airlines AA3991
14:35
Charlotte (CLT)

15:52
Appleton (ATW)
Effective 2025-08-06 through 2025-09-02
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:17, non-stop
Embraer EMB 175 (E75)
American Airlines AA3991
15:40
Appleton (ATW)

18:59
Charlotte (CLT)
Effective 2025-06-05 through 2025-07-03
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:19, non-stop
Embraer EMB 175 (E75)
American Airlines AA3991
15:49
Appleton (ATW)

19:12
Charlotte (CLT)
Effective 2025-07-05 through 2025-08-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:23, non-stop
Embraer EMB 175 (E75)
American Airlines AA3991
16:08
Boston Logan (BOS) B

18:21
Saint Louis (STL) 1
Effective 2025-10-26 through 2025-11-01
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 3:13, non-stop
Embraer EMB 175 (E75)
American Airlines AA3991
16:11
Chicago O'Hare (ORD) 3

17:06
Champaign/Urbana (CMI)
Valid until 2025-05-04
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 0:55, non-stop
Embraer EMB 170 / EMB 175 (E70)
American Airlines AA3991
16:14
Appleton (ATW)

19:40
Charlotte (CLT)
Effective 2025-09-03 through 2025-10-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:26, non-stop
Embraer EMB 175 (E75)
American Airlines AA3991
16:22
Appleton (ATW)

19:40
Charlotte (CLT)
Effective 2025-08-06 through 2025-09-02
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:18, non-stop
Embraer EMB 175 (E75)
American Airlines AA3991
16:26
Chicago O'Hare (ORD) 3

17:22
Champaign/Urbana (CMI)
Valid until 2025-05-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 0:56, non-stop
Embraer EMB 170 / EMB 175 (E70)
American Airlines AA3991
17:41
Champaign/Urbana (CMI)

18:47
Chicago O'Hare (ORD) 3
Valid until 2025-05-04
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:06, non-stop
Embraer EMB 170 / EMB 175 (E70)
American Airlines AA3991
17:53
Champaign/Urbana (CMI)

18:59
Chicago O'Hare (ORD) 3
Valid until 2025-05-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:06, non-stop
Embraer EMB 170 / EMB 175 (E70)
American Airlines AA3991
18:51
Saint Louis (STL) 1

22:24
Boston Logan (BOS) B
Effective 2025-10-26 through 2025-11-01
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:33, non-stop
Embraer EMB 175 (E75)
American Airlines AA3991
19:41
Miami (MIA)

22:09
Oklahoma City (OKC)
Effective 2025-05-05 through 2025-06-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 3:28, non-stop
Embraer EMB 175 (E75)
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This flight number is listed as serving the following routes:
  • Appleton (ATW) - Charlotte (CLT)
  • Boston Logan (BOS) - Saint Louis (STL)
  • Champaign/Urbana (CMI) - Chicago O'Hare (ORD)
  • Fargo (FAR) - Phoenix Sky Harbor (PHX)
  • Miami (MIA) - Oklahoma City (OKC)
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