Airlines with flights from Tucson to Denver
There are five airlines with scheduled flights between TUS and DEN. Southwest, United and Frontier has non-stop flights from Tucson International to Denver International and the flight time is 1 hour and 55 minutes.
Choose airline
Schedules
Non-stop with Southwest Airlines
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Total flight time: 1 hour and 55 minutes
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Low-cost airline
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Denver is a Southwest Airlines focus city (Operating base).
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20 flights per week
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Boeing 737-800 (winglets) Passenger/BBJ2Boeing 737MAX 8 PassengerBoeing 737-700 Passenger (Scimitar Winglets)
Flight
The timetable & schedule information was updated at 2026-04-22
Non-stop with United Airlines
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Total flight time: 2 hours and 3 minutes
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Denver is a United Airlines hub.
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13 flights per week
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Airbus A320Airbus A319
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Business and first class available
Flight
The timetable & schedule information was updated at 2026-04-22
Non-stop with Frontier Airlines
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Total flight time: 2 hours and 2 minutes
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Low-cost airline
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Denver is a Frontier Airlines focus city (Operating base).
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2 flights per week
Flight
The timetable & schedule information was updated at 2026-04-22
Via Phoenix with American Airlines
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Total flight time: 3h 06m - 5h 51m.
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One World Alliance
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369 flights per week
Flight
AA1757
AA1757
AA1638
AA1638
AA1638
AA3255
AA3255
The timetable & schedule information was updated at 2026-04-22
Via Phoenix with Southwest Airlines
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Total flight time: 3h 15m - 7h 10m.
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Low-cost airline
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Denver is a Southwest Airlines focus city (Operating base).
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34 flights per week
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Boeing 737-800 (winglets) Passenger/BBJ2Boeing 737MAX 8 PassengerBoeing 737-700 Passenger (Scimitar Winglets)
Flight
WN240
WN28
WN4058
WN3261
WN4758
WN2646
WN3267
The timetable & schedule information was updated at 2026-04-22
Via Las Vegas with Southwest Airlines
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Total flight time: 3h 50m - 8h 55m.
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Low-cost airline
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Denver is a Southwest Airlines focus city (Operating base).
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182 flights per week
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Boeing 737-800 (winglets) Passenger/BBJ2Boeing 737MAX 8 PassengerBoeing 737-700 Passenger (Scimitar Winglets)
Flight
WN1587
WN5076
WN1768
WN2226
WN785
WN2226
WN1105
WN1382
WN908
The timetable & schedule information was updated at 2026-04-22
Via Salt Lake City with Delta Air Lines
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Total flight time: 4h 31m - 5h 11m.
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Sky Team Alliance
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71 flights per week
Flight
DL1667
The timetable & schedule information was updated at 2026-04-22

There are five airlines with scheduled flights between TUS and DEN. Southwest, United and Frontier has non-stop flights from Tucson International to Denver International and the flight time is 1 hour and 55 minutes.