Delta Air Lines flight DL 3997: Multiple routes

Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Daily 16:07 Detroit (DTW) M 17:15 Pittsburgh (PIT)
DL 3997 Non-stop Canadair CRJ 900 (CR9) 1:08 Effective 2026-03-08 through 2026-04-12
Daily 17:55 Pittsburgh (PIT) 19:09 Detroit (DTW) M
DL 3997 Non-stop Canadair CRJ 900 (CR9) 1:14 Effective 2026-03-08 through 2026-04-12
Mon,Thu,Fri,Sun 19:35 Chicago O'Hare (ORD) 5 22:08 Detroit (DTW) M
DL 3997 Non-stop Canadair CRJ 900 (CR9) 1:33 Effective 2026-01-19 through 2026-02-06
Mon 19:35 Chicago O'Hare (ORD) 5 22:08 Detroit (DTW) M
DL 3997 Non-stop Canadair CRJ 900 (CR9) 1:33 Operates only on 2026-02-09
Mon-Fri,Sun 19:45 Seattle-Tacoma (SEA) 20:49 Portland (PDX)
DL 3997 Non-stop Embraer EMB 175 (E7W) 1:04 Effective 2026-04-13 through 2026-05-22
Mon-Fri,Sun 19:45 Seattle-Tacoma (SEA) 20:49 Portland (PDX)
DL 3997 Non-stop Embraer EMB 175 (E7W) 1:04 Effective 2026-05-25 through 2026-09-04
Mon-Fri,Sun 19:45 Seattle-Tacoma (SEA) 20:49 Portland (PDX)
DL 3997 Non-stop Embraer EMB 175 (E7W) 1:04 Effective 2026-09-07 through 2026-10-05
Mon-Fri,Sun 19:45 Seattle-Tacoma (SEA) 20:50 Portland (PDX)
DL 3997 Non-stop Embraer EMB 175 (E7W) 1:05 Effective from 2026-10-06
This flight number is listed as serving the following routes:


Feedback - Disclaimer - Privacy
FlightMapper.net Flight Search Countries Airlines
LANGUAGES
Delta Air Lines flight DL 3997: Multiple routes
Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Delta Air Lines DL3997
16:07
Detroit (DTW) M

17:15
Pittsburgh (PIT)
Effective 2026-03-08 through 2026-04-12
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:08, non-stop
Canadair CRJ 900 (CR9)
Direct Flights:
Delta Air Lines DL3997
17:55
Pittsburgh (PIT)

19:09
Detroit (DTW) M
Effective 2026-03-08 through 2026-04-12
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:14, non-stop
Canadair CRJ 900 (CR9)
Direct Flights:
Delta Air Lines DL3997
19:35
Chicago O'Hare (ORD) 5

22:08
Detroit (DTW) M
Effective 2026-01-19 through 2026-02-06
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 1:33, non-stop
Canadair CRJ 900 (CR9)
Direct Flights:
Delta Air Lines DL3997
19:35
Chicago O'Hare (ORD) 5

22:08
Detroit (DTW) M
Operates only on 2026-02-09
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:33, non-stop
Canadair CRJ 900 (CR9)
Direct Flights:
Delta Air Lines DL3997
19:45
Seattle-Tacoma (SEA)

20:49
Portland (PDX)
Effective 2026-04-13 through 2026-05-22
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:04, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL3997
19:45
Seattle-Tacoma (SEA)

20:49
Portland (PDX)
Effective 2026-05-25 through 2026-09-04
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:04, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL3997
19:45
Seattle-Tacoma (SEA)

20:49
Portland (PDX)
Effective 2026-09-07 through 2026-10-05
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:04, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL3997
19:45
Seattle-Tacoma (SEA)

20:50
Portland (PDX)
Effective from 2026-10-06
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:05, non-stop
Embraer EMB 175 (E7W)
This flight number is listed as serving the following routes:
  • Chicago O'Hare (ORD) - Detroit (DTW)
  • Detroit (DTW) - Pittsburgh (PIT)
  • Seattle-Tacoma (SEA) - Portland (PDX)
All Delta Air Lines flights
Feedback     -     Disclaimer     -     Privacy