| FLIGHT SCHEDULE | 
|---|
| Direct Codeshare Flights: | 
| Daily 
13:25 
Tucson (TUS)  
16:35 
Denver (DEN)  AC 4253 Non-stop Embraer EMB 175 (E7W) 2:10 Effective 2025-05-23 through 2025-06-25 Codeshare flight, operated by United Airlines.(UA 5938)  | 
| Thu 
13:25 
Tucson (TUS)  
16:27 
Denver (DEN)  AC 4253 Non-stop Airbus A320 (320) 2:02 Operates only on 2025-06-26 Codeshare flight, operated by United Airlines.(UA 2132)  | 
| Daily 
13:25 
Tucson (TUS)  
16:27 
Denver (DEN)  AC 4253 Non-stop Airbus A319 (319) 2:02 Effective 2025-06-27 through 2025-07-31 Codeshare flight, operated by United Airlines.(UA 2132)  | 
| Daily 
13:25 
Tucson (TUS)  
16:33 
Denver (DEN)  AC 4253 Non-stop Embraer EMB 175 (E7W) 2:08 Effective 2025-08-01 through 2025-08-18 Codeshare flight, operated by United Airlines.(UA 5938)  | 
| Daily 
13:30 
Tucson (TUS)  
16:27 
Denver (DEN)  AC 4253 Non-stop Boeing 737 MAX 8 (7M8) 1:57 Effective 2025-09-25 through 2025-10-25 Codeshare flight, operated by United Airlines.(UA 667)  | 
| Thu 
13:32 
Tucson (TUS)  
16:30 
Denver (DEN)  AC 4253 Non-stop Boeing 737-800 (738) 1:58 Operates only on 2025-05-01 Codeshare flight, operated by United Airlines.(UA 1510)  | 
| Mon-Fri,Sun 
13:32 
Tucson (TUS)  
16:30 
Denver (DEN)  AC 4253 Non-stop Boeing 737-900 (739) 1:58 Effective 2025-05-02 through 2025-05-21 Codeshare flight, operated by United Airlines.(UA 1510)  | 
| Daily 
13:37 
Tucson (TUS)  
16:36 
Denver (DEN)  AC 4253 Non-stop Boeing 737-800 (738) 1:59 Effective 2025-10-26 through 2025-11-01 Codeshare flight, operated by United Airlines.(UA 667)  | 
| Sat 
13:42 
Tucson (TUS)  
16:40 
Denver (DEN)  AC 4253 Non-stop Airbus A319 (319) 1:58 Effective 2025-05-03 through 2025-05-17 Codeshare flight, operated by United Airlines.(UA 1510)  | 
| Daily 
13:42 
Tucson (TUS)  
16:38 
Denver (DEN)  AC 4253 Non-stop Boeing 737-800 (738) 1:56 Effective 2025-08-19 through 2025-09-24 Codeshare flight, operated by United Airlines.(UA 667)  | 
| Daily 
14:30 
Tucson (TUS)  
16:26 
Denver (DEN)  AC 4253 Non-stop Boeing 737-800 (738) 1:56 Effective from 2025-11-02 Codeshare flight, operated by United Airlines.(UA 667)  |