United Airlines フライト UA 644: Multiple routes

搭乗日を選択
フライト時刻表
直行便:
日々 07:05 Dallas Fort Worth (DFW) E 08:07 Denver (DEN)
UA 644 Non-stop Airbus A319 (319) 2:02 Effective 2026-04-30 through 2026-05-20
日々 07:15 Dallas Fort Worth (DFW) E 08:36 Denver (DEN)
UA 644 Non-stop Boeing 737-800 (738) 2:21 Effective 2026-03-29 through 2026-04-29
月-土 07:30 Miami (MIA) 10:12 Denver (DEN)
UA 644 Non-stop Boeing 737-800 (738) 4:42 Valid until 2026-01-05
日 07:30 Miami (MIA) 10:12 Denver (DEN)
UA 644 Non-stop Boeing 737 MAX 8 (7M8) 4:42 Operates only on 2026-01-04
日々 07:40 Syracuse (SYR) 10:10 Denver (DEN)
UA 644 Non-stop Boeing 737-800 (738) 4:30 Effective 2026-02-12 through 2026-03-04
日々 08:40 Dallas Fort Worth (DFW) E 09:55 Denver (DEN)
UA 644 Non-stop Airbus A320 (320) 2:15 Effective from 2026-05-21
日々 11:15 Denver (DEN) 13:02 Portland (PDX)
UA 644 Non-stop Boeing 737-900 (739) 2:47 Effective 2026-03-29 through 2026-04-29
日々 11:21 Denver (DEN) 13:15 Portland (PDX)
UA 644 Non-stop Boeing 737-900 (739) 2:54 Effective 2026-04-30 through 2026-05-20
日々 11:21 Denver (DEN) 13:15 Portland (PDX)
UA 644 Non-stop Boeing 737 MAX 9 (7M9) 2:54 Effective from 2026-05-21
日々 11:40 Denver (DEN) 13:35 Portland (PDX)
UA 644 Non-stop Boeing 737 MAX 9 (7M9) 2:55 Valid until 2026-01-05
月-金,日 11:50 Denver (DEN) 13:45 Portland (PDX)
UA 644 Non-stop Boeing 737 MAX 9 (7M9) 2:55 Effective 2026-01-06 through 2026-02-02
土 11:50 Denver (DEN) 13:45 Portland (PDX)
UA 644 Non-stop Boeing 737-800 (738) 2:55 Effective 2026-01-10 through 2026-01-31
火 11:50 Denver (DEN) 13:46 Portland (PDX)
UA 644 Non-stop Airbus A319 (319) 2:56 Operates only on 2026-02-03
水,土 11:50 Denver (DEN) 13:45 Portland (PDX)
UA 644 Non-stop Boeing 737-800 (738) 2:55 Effective 2026-02-04 through 2026-02-07
火-木,日 11:50 Denver (DEN) 13:45 Portland (PDX)
UA 644 Non-stop Boeing 737 MAX 9 (7M9) 2:55 Effective 2026-02-05 through 2026-02-11
月,金 11:50 Denver (DEN) 13:46 Portland (PDX)
UA 644 Non-stop Airbus A320 (320) 2:56 Effective 2026-02-06 through 2026-02-09
木,土 11:50 Denver (DEN) 13:44 Portland (PDX)
UA 644 Non-stop Boeing 737-800 (738) 2:54 Effective 2026-02-12 through 2026-02-14
月-水,金 11:50 Denver (DEN) 13:44 Portland (PDX)
UA 644 Non-stop Boeing 737 MAX 9 (7M9) 2:54 Effective 2026-02-13 through 2026-03-04
日 11:50 Denver (DEN) 13:44 Portland (PDX)
UA 644 Non-stop Airbus A320 (320) 2:54 Effective 2026-02-15 through 2026-03-01
木 11:50 Denver (DEN) 13:44 Portland (PDX)
UA 644 Non-stop Boeing 737 MAX 8 (7M8) 2:54 Effective 2026-02-19 through 2026-02-26
土 11:50 Denver (DEN) 13:44 Portland (PDX)
UA 644 Non-stop Boeing 737-800 (738) 2:54 Effective 2026-02-21 through 2026-02-28
日々 11:50 Denver (DEN) 13:44 Portland (PDX)
UA 644 Non-stop Boeing 737-900 (739) 2:54 Effective 2026-03-05 through 2026-03-11
木 11:50 Denver (DEN) 13:44 Portland (PDX)
UA 644 Non-stop Boeing 737-800 (738) 2:54 Operates only on 2026-03-12
日々 11:50 Denver (DEN) 13:44 Portland (PDX)
UA 644 Non-stop Boeing 737-900 (739) 2:54 Effective 2026-03-13 through 2026-03-28
乗継便:
日々 07:05 Dallas Fort Worth (DFW) E 13:15 Portland (PDX)
UA 644 1-stop Airbus A319 (319) 8:10 Effective 2026-04-30 through 2026-05-20
日々 07:15 Dallas Fort Worth (DFW) E 13:02 Portland (PDX)
UA 644 1-stop Boeing 737-800 (738) 7:47 Effective 2026-03-29 through 2026-04-29
月-土 07:30 Miami (MIA) 13:35 Portland (PDX)
UA 644 1-stop Boeing 737-800 (738) 9:05 Valid until 2026-01-05
日 07:30 Miami (MIA) 13:35 Portland (PDX)
UA 644 1-stop Boeing 737 MAX 8 (7M8) 9:05 Operates only on 2026-01-04
日々 07:40 Syracuse (SYR) 13:44 Portland (PDX)
UA 644 1-stop Boeing 737-800 (738) 9:04 Effective 2026-02-12 through 2026-03-04
日々 08:40 Dallas Fort Worth (DFW) E 13:15 Portland (PDX)
UA 644 1-stop Airbus A320 (320) 6:35 Effective from 2026-05-21
This flight number is listed as serving the following routes:
United Airlines フライト UA 644: Multiple routes
搭乗日を選択
フライト時刻表
直行便:

United Airlines UA644
Effective 2026-04-30 through 2026-05-20







Duration: 2:02, non-stop
Airbus A319 (319)

直行便:

United Airlines UA644
Effective 2026-03-29 through 2026-04-29







Duration: 2:21, non-stop
Boeing 737-800 (738)

直行便:

United Airlines UA644
Valid until 2026-01-05







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Duration: 4:42, non-stop
Boeing 737-800 (738)

直行便:

United Airlines UA644
Operates only on 2026-01-04

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Duration: 4:42, non-stop
Boeing 737 MAX 8 (7M8)

直行便:

United Airlines UA644
Effective 2026-02-12 through 2026-03-04







Duration: 4:30, non-stop
Boeing 737-800 (738)

直行便:

United Airlines UA644
Effective from 2026-05-21







Duration: 2:15, non-stop
Airbus A320 (320)

直行便:

United Airlines UA644
Effective 2026-03-29 through 2026-04-29







Duration: 2:47, non-stop
Boeing 737-900 (739)

直行便:

United Airlines UA644
Effective 2026-04-30 through 2026-05-20







Duration: 2:54, non-stop
Boeing 737-900 (739)

直行便:

United Airlines UA644
Effective from 2026-05-21







Duration: 2:54, non-stop
Boeing 737 MAX 9 (7M9)

直行便:

United Airlines UA644
Valid until 2026-01-05







Duration: 2:55, non-stop
Boeing 737 MAX 9 (7M9)

直行便:

United Airlines UA644
Effective 2026-01-06 through 2026-02-02






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Duration: 2:55, non-stop
Boeing 737 MAX 9 (7M9)

直行便:

United Airlines UA644
Effective 2026-01-10 through 2026-01-31

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Duration: 2:55, non-stop
Boeing 737-800 (738)

直行便:

United Airlines UA644
Operates only on 2026-02-03

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Duration: 2:56, non-stop
Airbus A319 (319)

直行便:

United Airlines UA644
Effective 2026-02-04 through 2026-02-07

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Duration: 2:55, non-stop
Boeing 737-800 (738)

直行便:

United Airlines UA644
Effective 2026-02-05 through 2026-02-11

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-

Duration: 2:55, non-stop
Boeing 737 MAX 9 (7M9)

直行便:

United Airlines UA644
Effective 2026-02-06 through 2026-02-09


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-
Duration: 2:56, non-stop
Airbus A320 (320)

直行便:

United Airlines UA644
Effective 2026-02-12 through 2026-02-14

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-

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-
Duration: 2:54, non-stop
Boeing 737-800 (738)

直行便:

United Airlines UA644
Effective 2026-02-13 through 2026-03-04




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-
Duration: 2:54, non-stop
Boeing 737 MAX 9 (7M9)

直行便:

United Airlines UA644
Effective 2026-02-15 through 2026-03-01

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-

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-

-

Duration: 2:54, non-stop
Airbus A320 (320)

直行便:

United Airlines UA644
Effective 2026-02-19 through 2026-02-26

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Duration: 2:54, non-stop
Boeing 737 MAX 8 (7M8)

直行便:

United Airlines UA644
Effective 2026-02-21 through 2026-02-28

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-

-

-

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-
Duration: 2:54, non-stop
Boeing 737-800 (738)

直行便:

United Airlines UA644
Effective 2026-03-05 through 2026-03-11







Duration: 2:54, non-stop
Boeing 737-900 (739)

直行便:

United Airlines UA644
Operates only on 2026-03-12

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-

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-
Duration: 2:54, non-stop
Boeing 737-800 (738)

直行便:

United Airlines UA644
Effective 2026-03-13 through 2026-03-28







Duration: 2:54, non-stop
Boeing 737-900 (739)

乗継便:

United Airlines UA644
Effective 2026-04-30 through 2026-05-20







Duration: 8:10, 1-stop
Airbus A319 (319)

乗継便:

United Airlines UA644
Effective 2026-03-29 through 2026-04-29







Duration: 7:47, 1-stop
Boeing 737-800 (738)

乗継便:

United Airlines UA644
Valid until 2026-01-05







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Duration: 9:05, 1-stop
Boeing 737-800 (738)

乗継便:

United Airlines UA644
Operates only on 2026-01-04

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-

-

-

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Duration: 9:05, 1-stop
Boeing 737 MAX 8 (7M8)

乗継便:

United Airlines UA644
Effective 2026-02-12 through 2026-03-04







Duration: 9:04, 1-stop
Boeing 737-800 (738)

乗継便:

United Airlines UA644
Effective from 2026-05-21







Duration: 6:35, 1-stop
Airbus A320 (320)
This flight number is listed as serving the following routes:
  • Dallas Fort Worth (DFW) - Denver (DEN)
  • Dallas Fort Worth (DFW) - Portland (PDX)
  • Denver (DEN) - Portland (PDX)
  • Miami (MIA) - Denver (DEN)
  • Miami (MIA) - Portland (PDX)
  • Syracuse (SYR) - Denver (DEN)
  • Syracuse (SYR) - Portland (PDX)