WestJet flight WS 8521: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Tue 06:00 Syracuse (SYR) 07:31 Detroit (DTW) M
WS 8521 Non-stop Airbus A319 (319) 1:31 Operates only on 2025-07-08
Codeshare flight, operated by Delta Air Lines.(DL 2091)
Tue 06:00 Syracuse (SYR) 07:31 Detroit (DTW) M
WS 8521 Non-stop Airbus A319 (319) 1:31 Operates only on 2025-07-22
Codeshare flight, operated by Delta Air Lines.(DL 2091)
Thu,Sun 06:00 San Francisco (SFO) 1 07:32 Los Angeles (LAX) 3
WS 8521 Non-stop Boeing 737-900 (739) 1:32 Effective 2025-08-14 through 2025-08-28
Codeshare flight, operated by Delta Air Lines.(DL 1598)
Tue 11:00 Orlando (MCO) B 12:36 Atlanta (ATL) S
WS 8521 Non-stop Boeing 757 (757) 1:36 Operates only on 2025-09-02
Codeshare flight, operated by Delta Air Lines.(DL 1213)
Sat 11:52 Atlanta (ATL) S 13:11 Wichita (ICT)
WS 8521 Non-stop Boeing 717 (717) 2:19 Operates only on 2025-05-03
Codeshare flight, operated by Delta Air Lines.(DL 2128)
Tue 12:02 Syracuse (SYR) 14:23 Atlanta (ATL) S
WS 8521 Non-stop Airbus A320 (320) 2:21 Operates only on 2025-07-15
Codeshare flight, operated by Delta Air Lines.(DL 1375)
Tue 12:02 Syracuse (SYR) 14:23 Atlanta (ATL) S
WS 8521 Non-stop Airbus A320 (320) 2:21 Operates only on 2025-07-29
Codeshare flight, operated by Delta Air Lines.(DL 1375)
Tue 12:42 Syracuse (SYR) 14:13 Detroit (DTW) M
WS 8521 Non-stop Canadair CRJ 900 (CR9) 1:31 Operates only on 2025-08-05
Codeshare flight, operated by Delta Air Lines.(DL 5533)
Thu 12:43 Luis Munoz Marin, San Juan (SJU) B 16:57 New York John F. Kennedy (JFK) 4
WS 8521 Non-stop Airbus A321neo (32Q) 4:14 Operates only on 2025-09-04
Codeshare flight, operated by Delta Air Lines.(DL 1877)
Mon,Wed,Sun 12:50 Luis Munoz Marin, San Juan (SJU) B 16:51 Atlanta (ATL) S
WS 8521 Non-stop Boeing 737-900 (739) 4:01 Valid until 2025-05-05
Codeshare flight, operated by Delta Air Lines.(DL 1757)
Fri 12:50 Luis Munoz Marin, San Juan (SJU) B 16:48 Atlanta (ATL) S
WS 8521 Non-stop Boeing 737-900 (739) 3:58 Operates only on 2025-05-02
Codeshare flight, operated by Delta Air Lines.(DL 1757)
Mon-Fri,Sun 13:13 Luis Munoz Marin, San Juan (SJU) B 17:21 New York John F. Kennedy (JFK) 4
WS 8521 Non-stop Boeing 737-900 (739) 4:08 Effective 2025-09-08 through 2025-09-25
Codeshare flight, operated by Delta Air Lines.(DL 1877)
Mon-Wed 13:13 Luis Munoz Marin, San Juan (SJU) B 17:21 New York John F. Kennedy (JFK) 4
WS 8521 Non-stop Boeing 737-900 (739) 4:08 Effective 2025-09-29 through 2025-10-01
Codeshare flight, operated by Delta Air Lines.(DL 1877)
Thu,Fri,Sun 13:30 Seattle-Tacoma (SEA) 14:39 Vancouver (YVR) M
WS 8521 Non-stop Embraer EMB 175 (E7W) 1:09 Effective 2025-09-26 through 2025-10-02
Codeshare flight, operated by Delta Air Lines.(DL 3748)
Fri 13:30 Seattle-Tacoma (SEA) 16:40 Salt Lake City (SLC)
WS 8521 Non-stop Boeing 737-900 (739) 2:10 Operates only on 2025-10-03
Codeshare flight, operated by Delta Air Lines.(DL 1120)
Tue,Wed,Sat,Sun 13:30 Seattle-Tacoma (SEA) 14:39 Vancouver (YVR) M
WS 8521 Non-stop Embraer EMB 175 (E7W) 1:09 Effective 2025-10-04 through 2025-10-08
Codeshare flight, operated by Delta Air Lines.(DL 3748)
Tue,Thu 13:31 Luis Munoz Marin, San Juan (SJU) B 17:55 New York John F. Kennedy (JFK) 4
WS 8521 Non-stop Airbus A321neo (32Q) 4:24 Effective 2025-06-19 through 2025-06-24
Codeshare flight, operated by Delta Air Lines.(DL 1877)
Tue 13:31 Luis Munoz Marin, San Juan (SJU) B 17:55 New York John F. Kennedy (JFK) 4
WS 8521 Non-stop Airbus A321neo (32Q) 4:24 Operates only on 2025-07-01
Codeshare flight, operated by Delta Air Lines.(DL 1877)
Fri,Sun 13:40 Seattle-Tacoma (SEA) 16:20 Anchorage (ANC) S
WS 8521 Non-stop Boeing 737-800 (738) 3:40 Effective 2025-05-23 through 2025-06-06
Codeshare flight, operated by Delta Air Lines.(DL 931)
Sat 14:15 Luis Munoz Marin, San Juan (SJU) B 19:04 Detroit (DTW) M
WS 8521 Non-stop Boeing 737-900 (739) 4:49 Effective 2025-09-06 through 2025-09-27
Codeshare flight, operated by Delta Air Lines.(DL 1913)
Fri-Sun 15:15 Seattle-Tacoma (SEA) 18:00 San Diego (SAN) 2
WS 8521 Non-stop Boeing 737-800 (738) 2:45 Effective 2025-10-17 through 2025-10-19
Codeshare flight, operated by Delta Air Lines.(DL 2613)
Sun 15:30 Seattle-Tacoma (SEA) 18:25 Santa Ana (SNA)
WS 8521 Non-stop Airbus A220-100 (221) 2:55 Operates only on 2025-08-10
Codeshare flight, operated by Delta Air Lines.(DL 2318)
Wed 15:52 Atlanta (ATL) S 16:20 New Orleans (MSY)
WS 8521 Non-stop Boeing 757 (757) 1:28 Operates only on 2025-06-18
Codeshare flight, operated by Delta Air Lines.(DL 1771)
Tue 16:33 Atlanta (ATL) S 17:11 Monroe (MLU)
WS 8521 Non-stop Canadair CRJ 900 (CR9) 1:38 Effective 2025-06-10 through 2025-06-17
Codeshare flight, operated by Delta Air Lines.(DL 5185)
Thu 16:50 Atlanta (ATL) S 17:13 Jackson (JAN)
WS 8521 Non-stop Boeing 717 (717) 1:23 Operates only on 2025-06-12
Codeshare flight, operated by Delta Air Lines.(DL 1821)
Sat 16:52 Atlanta (ATL) S 17:30 Monroe (MLU)
WS 8521 Non-stop Canadair CRJ 700 (CR7) 1:38 Operates only on 2025-06-14
Codeshare flight, operated by Delta Air Lines.(DL 5185)
Mon,Fri,Sun 17:30 Seattle-Tacoma (SEA) 20:07 Anchorage (ANC) S
WS 8521 Non-stop Boeing 737-900 (739) 3:37 Effective 2025-06-08 through 2025-06-16
Codeshare flight, operated by Delta Air Lines.(DL 931)
Mon,Wed,Fri 17:37 Louisville (SDF) 19:14 Atlanta (ATL) S
WS 8521 Non-stop Boeing 717 (717) 1:37 Effective 2025-06-20 through 2025-07-04
Codeshare flight, operated by Delta Air Lines.(DL 2812)
Thu,Sun 17:40 Seattle-Tacoma (SEA) 18:48 Vancouver (YVR) M
WS 8521 Non-stop Embraer EMB 175 (E7W) 1:08 Effective 2025-07-13 through 2025-07-24
Codeshare flight, operated by Delta Air Lines.(DL 3682)
Mon,Wed,Fri 17:45 Louisville (SDF) 19:20 Atlanta (ATL) S
WS 8521 Non-stop Boeing 737-900 (739) 1:35 Effective 2025-07-07 through 2025-08-11
Codeshare flight, operated by Delta Air Lines.(DL 2812)
Mon-Wed,Fri 17:45 Louisville (SDF) 19:20 Atlanta (ATL) S
WS 8521 Non-stop Boeing 737-900 (739) 1:35 Effective 2025-08-12 through 2025-09-01
Codeshare flight, operated by Delta Air Lines.(DL 2812)
Wed 17:45 Louisville (SDF) 19:20 Atlanta (ATL) S
WS 8521 Non-stop Boeing 737-900 (739) 1:35 Operates only on 2025-09-03
Codeshare flight, operated by Delta Air Lines.(DL 2812)
Thu 19:30 Seattle-Tacoma (SEA) 22:21 Santa Ana (SNA)
WS 8521 Non-stop Airbus A220-100 (221) 2:51 Operates only on 2025-07-10
Codeshare flight, operated by Delta Air Lines.(DL 637)
Thu,Sun 19:30 Seattle-Tacoma (SEA) 22:21 Santa Ana (SNA)
WS 8521 Non-stop Airbus A220-100 (221) 2:51 Effective 2025-07-27 through 2025-07-31
Codeshare flight, operated by Delta Air Lines.(DL 637)
Sun 19:50 Seattle-Tacoma (SEA) 21:48 Sacramento (SMF) A
WS 8521 Non-stop Embraer EMB 175 (E7W) 1:58 Operates only on 2025-08-03
Codeshare flight, operated by Delta Air Lines.(DL 4131)
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This flight number is listed as serving the following routes:
WestJet flight WS 8521: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:

WestJet WS8521
Operates only on 2025-07-08
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 2091)
Duration: 1:31, non-stop
Airbus A319 (319)

WestJet WS8521
Operates only on 2025-07-22
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 2091)
Duration: 1:31, non-stop
Airbus A319 (319)

WestJet WS8521
Effective 2025-08-14 through 2025-08-28
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 1598)
Duration: 1:32, non-stop
Boeing 737-900 (739)

WestJet WS8521
11:00

12:36
Operates only on 2025-09-02
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 1213)
Duration: 1:36, non-stop
Boeing 757 (757)

WestJet WS8521
Operates only on 2025-05-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 2128)
Duration: 2:19, non-stop
Boeing 717 (717)

WestJet WS8521
Operates only on 2025-07-15
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 1375)
Duration: 2:21, non-stop
Airbus A320 (320)

WestJet WS8521
Operates only on 2025-07-29
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 1375)
Duration: 2:21, non-stop
Airbus A320 (320)

WestJet WS8521
Operates only on 2025-08-05
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 5533)
Duration: 1:31, non-stop
Canadair CRJ 900 (CR9)

WestJet WS8521
Operates only on 2025-09-04
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 1877)
Duration: 4:14, non-stop
Airbus A321neo (32Q)

WestJet WS8521
Valid until 2025-05-05
Mon
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 1757)
Duration: 4:01, non-stop
Boeing 737-900 (739)

WestJet WS8521
Operates only on 2025-05-02
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 1757)
Duration: 3:58, non-stop
Boeing 737-900 (739)

WestJet WS8521
Effective 2025-09-08 through 2025-09-25
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 1877)
Duration: 4:08, non-stop
Boeing 737-900 (739)

WestJet WS8521
Effective 2025-09-29 through 2025-10-01
Mon
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 1877)
Duration: 4:08, non-stop
Boeing 737-900 (739)

WestJet WS8521
Effective 2025-09-26 through 2025-10-02
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 3748)
Duration: 1:09, non-stop
Embraer EMB 175 (E7W)

WestJet WS8521
Operates only on 2025-10-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 1120)
Duration: 2:10, non-stop
Boeing 737-900 (739)

WestJet WS8521
Effective 2025-10-04 through 2025-10-08
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 3748)
Duration: 1:09, non-stop
Embraer EMB 175 (E7W)

WestJet WS8521
Effective 2025-06-19 through 2025-06-24
Mon
-
Tue
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 1877)
Duration: 4:24, non-stop
Airbus A321neo (32Q)

WestJet WS8521
Operates only on 2025-07-01
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 1877)
Duration: 4:24, non-stop
Airbus A321neo (32Q)

WestJet WS8521
Effective 2025-05-23 through 2025-06-06
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 931)
Duration: 3:40, non-stop
Boeing 737-800 (738)

WestJet WS8521
Effective 2025-09-06 through 2025-09-27
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 1913)
Duration: 4:49, non-stop
Boeing 737-900 (739)

WestJet WS8521
Effective 2025-10-17 through 2025-10-19
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 2613)
Duration: 2:45, non-stop
Boeing 737-800 (738)

WestJet WS8521
Operates only on 2025-08-10
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 2318)
Duration: 2:55, non-stop
Airbus A220-100 (221)

WestJet WS8521
Operates only on 2025-06-18
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 1771)
Duration: 1:28, non-stop
Boeing 757 (757)

WestJet WS8521
16:33

17:11
Effective 2025-06-10 through 2025-06-17
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 5185)
Duration: 1:38, non-stop
Canadair CRJ 900 (CR9)

WestJet WS8521
Operates only on 2025-06-12
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 1821)
Duration: 1:23, non-stop
Boeing 717 (717)

WestJet WS8521
16:52

17:30
Operates only on 2025-06-14
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 5185)
Duration: 1:38, non-stop
Canadair CRJ 700 (CR7)

WestJet WS8521
Effective 2025-06-08 through 2025-06-16
Mon
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 931)
Duration: 3:37, non-stop
Boeing 737-900 (739)

WestJet WS8521
Effective 2025-06-20 through 2025-07-04
Mon
Tue
-
Wed
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 2812)
Duration: 1:37, non-stop
Boeing 717 (717)

WestJet WS8521
Effective 2025-07-13 through 2025-07-24
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 3682)
Duration: 1:08, non-stop
Embraer EMB 175 (E7W)

WestJet WS8521
Effective 2025-07-07 through 2025-08-11
Mon
Tue
-
Wed
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 2812)
Duration: 1:35, non-stop
Boeing 737-900 (739)

WestJet WS8521
Effective 2025-08-12 through 2025-09-01
Mon
Tue
Wed
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 2812)
Duration: 1:35, non-stop
Boeing 737-900 (739)

WestJet WS8521
Operates only on 2025-09-03
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 2812)
Duration: 1:35, non-stop
Boeing 737-900 (739)

WestJet WS8521
Operates only on 2025-07-10
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 637)
Duration: 2:51, non-stop
Airbus A220-100 (221)

WestJet WS8521
Effective 2025-07-27 through 2025-07-31
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 637)
Duration: 2:51, non-stop
Airbus A220-100 (221)

WestJet WS8521
Operates only on 2025-08-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Codeshare flight, operated by Delta Air Lines. (DL 4131)
Duration: 1:58, non-stop
Embraer EMB 175 (E7W)
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This flight number is listed as serving the following routes:
  • Atlanta (ATL) - Jackson (JAN)
  • Atlanta (ATL) - Monroe (MLU)
  • Atlanta (ATL) - New Orleans (MSY)
  • Atlanta (ATL) - Wichita (ICT)
  • Louisville (SDF) - Atlanta (ATL)
  • Luis Munoz Marin, San Juan (SJU) - Atlanta (ATL)
  • Luis Munoz Marin, San Juan (SJU) - Detroit (DTW)
  • Luis Munoz Marin, San Juan (SJU) - New York John F. Kennedy (JFK)
  • Orlando (MCO) - Atlanta (ATL)
  • San Francisco (SFO) - Los Angeles (LAX)
  • Seattle-Tacoma (SEA) - Anchorage (ANC)
  • Seattle-Tacoma (SEA) - Sacramento (SMF)
  • Seattle-Tacoma (SEA) - Salt Lake City (SLC)
  • Seattle-Tacoma (SEA) - San Diego (SAN)
  • Seattle-Tacoma (SEA) - Santa Ana (SNA)
  • Seattle-Tacoma (SEA) - Vancouver (YVR)
  • Syracuse (SYR) - Atlanta (ATL)
  • Syracuse (SYR) - Detroit (DTW)