United Airlines flight UA 3663: Multiple routes

Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Daily 05:45 Portland (PWM) 07:57 Chicago O'Hare (ORD) 2
UA 3663 Non-stop Embraer EMB 175 (E7W) 3:12 Effective 2026-02-13 through 2026-03-04
Mon-Fri,Sun 10:00 Kansas City (MCI) 11:50 Chicago O'Hare (ORD) 2
UA 3663 Non-stop Embraer EMB 175 (E7W) 1:50 Effective 2026-01-07 through 2026-01-18
Mon-Fri,Sun 10:00 Kansas City (MCI) 11:50 Chicago O'Hare (ORD) 2
UA 3663 Non-stop Embraer EMB 175 (E7W) 1:50 Effective 2026-01-20 through 2026-02-03
Wed 10:00 Kansas City (MCI) 11:50 Chicago O'Hare (ORD) 2
UA 3663 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:50 Operates only on 2026-02-04
Mon-Fri,Sun 10:00 Kansas City (MCI) 11:50 Chicago O'Hare (ORD) 2
UA 3663 Non-stop Embraer EMB 175 (E7W) 1:50 Effective 2026-02-05 through 2026-02-11
Daily 10:35 Ottawa Macdonald-Cartier (YOW) 11:43 Chicago O'Hare (ORD) 2
UA 3663 Non-stop Embraer EMB 175 (E7W) 2:08 Effective 2026-03-29 through 2026-04-29
Daily 10:35 Ottawa Macdonald-Cartier (YOW) 12:08 Chicago O'Hare (ORD) 2
UA 3663 Non-stop Embraer EMB 175 (E7W) 2:33 Effective 2026-04-30 through 2026-05-20
Daily 10:35 Ottawa Macdonald-Cartier (YOW) 11:43 Chicago O'Hare (ORD) 2
UA 3663 Non-stop Embraer EMB 175 (E7W) 2:08 Effective 2026-05-21 through 2026-10-24
Daily 11:00 Ottawa Macdonald-Cartier (YOW) 12:35 Chicago O'Hare (ORD) 2
UA 3663 Non-stop Embraer EMB 175 (E7W) 2:35 Effective from 2026-10-25
Fri 11:15 New York LaGuardia (LGA) B 12:59 Chicago O'Hare (ORD) 2
UA 3663 Non-stop Embraer EMB 175 (E7W) 2:44 Effective 2026-03-06 through 2026-03-27
Mon,Thu-Sun 15:00 Raleigh/Durham (RDU) 2 16:18 Washington Dulles (IAD)
UA 3663 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:18 Valid until 2026-01-05
Sat 17:28 Charlotte (CLT) 18:55 Chicago O'Hare (ORD) 2
UA 3663 Non-stop Embraer EMB 175 (E7W) 2:27 Effective 2026-03-07 through 2026-03-28
Sun 17:30 Charlotte (CLT) 18:57 Chicago O'Hare (ORD) 2
UA 3663 Non-stop Embraer EMB 175 (E7W) 2:27 Effective 2026-03-08 through 2026-03-22
This flight number is listed as serving the following routes:


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United Airlines flight UA 3663: Multiple routes
Select flight date:
FLIGHT SCHEDULE
Direct Flights:
United Airlines UA3663
05:45
Portland (PWM)

07:57
Chicago O'Hare (ORD) 2
Effective 2026-02-13 through 2026-03-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 3:12, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
United Airlines UA3663
10:00
Kansas City (MCI)

11:50
Chicago O'Hare (ORD) 2
Effective 2026-01-07 through 2026-01-18
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:50, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
United Airlines UA3663
10:00
Kansas City (MCI)

11:50
Chicago O'Hare (ORD) 2
Effective 2026-01-20 through 2026-02-03
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:50, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
United Airlines UA3663
10:00
Kansas City (MCI)

11:50
Chicago O'Hare (ORD) 2
Operates only on 2026-02-04
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:50, non-stop
Embraer EMB 170 / EMB 175 (E70)
Direct Flights:
United Airlines UA3663
10:00
Kansas City (MCI)

11:50
Chicago O'Hare (ORD) 2
Effective 2026-02-05 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:50, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
United Airlines UA3663
10:35
Ottawa Macdonald-Cartier (YOW)

11:43
Chicago O'Hare (ORD) 2
Effective 2026-03-29 through 2026-04-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:08, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
United Airlines UA3663
10:35
Ottawa Macdonald-Cartier (YOW)

12:08
Chicago O'Hare (ORD) 2
Effective 2026-04-30 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:33, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
United Airlines UA3663
10:35
Ottawa Macdonald-Cartier (YOW)

11:43
Chicago O'Hare (ORD) 2
Effective 2026-05-21 through 2026-10-24
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:08, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
United Airlines UA3663
11:00
Ottawa Macdonald-Cartier (YOW)

12:35
Chicago O'Hare (ORD) 2
Effective from 2026-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:35, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
United Airlines UA3663
11:15
New York LaGuardia (LGA) B

12:59
Chicago O'Hare (ORD) 2
Effective 2026-03-06 through 2026-03-27
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 2:44, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
United Airlines UA3663
15:00
Raleigh/Durham (RDU) 2

16:18
Washington Dulles (IAD)
Valid until 2026-01-05
Mon
Tue
-
Wed
-
Thu
Fri
Sat
Sun
Duration: 1:18, non-stop
Embraer EMB 170 / EMB 175 (E70)
Direct Flights:
United Airlines UA3663
17:28
Charlotte (CLT)

18:55
Chicago O'Hare (ORD) 2
Effective 2026-03-07 through 2026-03-28
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:27, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
United Airlines UA3663
17:30
Charlotte (CLT)

18:57
Chicago O'Hare (ORD) 2
Effective 2026-03-08 through 2026-03-22
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:27, non-stop
Embraer EMB 175 (E7W)
This flight number is listed as serving the following routes:
  • Charlotte (CLT) - Chicago O'Hare (ORD)
  • Kansas City (MCI) - Chicago O'Hare (ORD)
  • New York LaGuardia (LGA) - Chicago O'Hare (ORD)
  • Ottawa Macdonald-Cartier (YOW) - Chicago O'Hare (ORD)
  • Portland (PWM) - Chicago O'Hare (ORD)
  • Raleigh/Durham (RDU) - Washington Dulles (IAD)
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