United Airlines flight UA 4639: Multiple routes

Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Thu 07:15 Baton Rouge (BTR) 08:40 Houston George Bush (IAH) B
UA 4639 Non-stop Embraer EMB 175 (E7W) 1:25 Operates only on 2026-02-12
Tue 07:31 Fort Wayne (FWA) 08:05 Chicago O'Hare (ORD) 2
UA 4639 Non-stop Canadair CRJ (CRJ) 1:34 Operates only on 2026-01-06
Daily 07:32 Fort Wayne (FWA) 08:05 Chicago O'Hare (ORD) 2
UA 4639 Non-stop Canadair CRJ 550 (CR5) 1:33 Effective 2026-01-07 through 2026-02-03
Daily 07:32 Fort Wayne (FWA) 08:05 Chicago O'Hare (ORD) 2
UA 4639 Non-stop Canadair CRJ 550 (CR5) 1:33 Effective 2026-02-05 through 2026-02-11
Daily 07:40 Fargo (FAR) 09:50 Chicago O'Hare (ORD) 2
UA 4639 Non-stop Canadair CRJ 550 (CR5) 2:10 Effective 2026-02-13 through 2026-03-04
Daily 08:20 Boise (BOI) 09:22 San Francisco (SFO) 3
UA 4639 Non-stop Embraer EMB 175 (E7W) 2:02 Effective 2026-03-29 through 2026-05-20
Daily 08:20 Boise (BOI) 09:22 San Francisco (SFO) 3
UA 4639 Non-stop Embraer EMB 175 (E7W) 2:02 Effective from 2026-08-11
Wed 08:30 Bakersfield (BFL) 12:10 Denver (DEN)
UA 4639 Non-stop Embraer EMB 175 (E7W) 2:40 Operates only on 2026-02-04
Daily 08:39 Boise (BOI) 09:45 San Francisco (SFO) 3
UA 4639 Non-stop Embraer EMB 175 (E7W) 2:06 Effective 2026-03-05 through 2026-03-28
Sat 10:42 Ontario, Los Angeles (ONT) 2 12:28 San Francisco (SFO) 3
UA 4639 Non-stop Canadair CRJ 700 (CR7) 1:46 Valid until 2026-01-03
Mon-Fri,Sun 10:42 Ontario, Los Angeles (ONT) 2 12:29 San Francisco (SFO) 3
UA 4639 Non-stop Embraer EMB 175 (E7W) 1:47 Valid until 2026-01-05
This flight number is listed as serving the following routes:


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United Airlines flight UA 4639: Multiple routes
Select flight date:
FLIGHT SCHEDULE
Direct Flights:
United Airlines UA4639
07:15
Baton Rouge (BTR)

08:40
Houston George Bush (IAH) B
Operates only on 2026-02-12
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 1:25, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
United Airlines UA4639
07:31
Fort Wayne (FWA)

08:05
Chicago O'Hare (ORD) 2
Operates only on 2026-01-06
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:34, non-stop
Canadair CRJ (CRJ)
Direct Flights:
United Airlines UA4639
07:32
Fort Wayne (FWA)

08:05
Chicago O'Hare (ORD) 2
Effective 2026-01-07 through 2026-02-03
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:33, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4639
07:32
Fort Wayne (FWA)

08:05
Chicago O'Hare (ORD) 2
Effective 2026-02-05 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:33, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4639
07:40
Fargo (FAR)

09:50
Chicago O'Hare (ORD) 2
Effective 2026-02-13 through 2026-03-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:10, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4639
08:20
Boise (BOI)

09:22
San Francisco (SFO) 3
Effective 2026-03-29 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:02, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
United Airlines UA4639
08:20
Boise (BOI)

09:22
San Francisco (SFO) 3
Effective from 2026-08-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:02, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
United Airlines UA4639
08:30
Bakersfield (BFL)

12:10
Denver (DEN)
Operates only on 2026-02-04
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:40, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
United Airlines UA4639
08:39
Boise (BOI)

09:45
San Francisco (SFO) 3
Effective 2026-03-05 through 2026-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:06, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
United Airlines UA4639
10:42
Ontario, Los Angeles (ONT) 2

12:28
San Francisco (SFO) 3
Valid until 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:46, non-stop
Canadair CRJ 700 (CR7)
Direct Flights:
United Airlines UA4639
10:42
Ontario, Los Angeles (ONT) 2

12:29
San Francisco (SFO) 3
Valid until 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:47, non-stop
Embraer EMB 175 (E7W)
This flight number is listed as serving the following routes:
  • Bakersfield (BFL) - Denver (DEN)
  • Baton Rouge (BTR) - Houston George Bush (IAH)
  • Boise (BOI) - San Francisco (SFO)
  • Fargo (FAR) - Chicago O'Hare (ORD)
  • Fort Wayne (FWA) - Chicago O'Hare (ORD)
  • Ontario, Los Angeles (ONT) - San Francisco (SFO)
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