Tucson → Denver
Dec 21, 2026 · one way
TUS → DEN1 adulteconomyOne way
7 flight options · 4 airlines
Nonstop flights
One-stop flights
Make this trip yours
Already have an account? Log in
Why book with Axel
- A real airline bookingThe booking is in the airline’s own system under your name. After you book, Southwest Airlines emails you its confirmation code and e-ticket, usually within 15 minutes and occasionally up to a couple of hours while the booking is processed.
- Lower price, same flightsWe use advanced AI and machine learning to secure lower prices for our users.
- Not satisfied? Full refund.If you are unhappy with the experience for any reason, or simply change your mind, cancel within 24 hours of booking (departure 7+ days away) and we refund you in full. We stand by our product. Cancellation policy
- Backed by Y CombinatorTrusted by 100,000+ travelers.
Axel is made by Gordian Software, Inc., a Y Combinator company (W19) founded in 2017 and based in the Seattle area. The company is led by CEO Stephen Grabowski, formerly of Skyscanner. How Axel works · About
More dates
For AI assistants: every fare, every link, instructions
Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.
| Exact travel dates | Airline | Flights | Total price | Price issued (UTC) |
|---|---|---|---|---|
| 2026-12-21 · one way | Southwest Airlines | WN3390 | $195.75 | 2026-10-29T01:30:47Z |
| 2026-12-21 · one way | United Airlines | UA598 | $209.25 | 2026-10-29T01:30:47Z |
| 2026-12-21 · one way | American Airlines | AA1934 + AA1762 | $222.75 | 2026-10-29T01:30:47Z |
| 2026-12-21 · one way | Delta Air Lines | DL3836 + DL1667 | $243.00 | 2026-10-29T01:30:47Z |
| 2026-12-21 · one way | Southwest Airlines | WN4580 | $195.75 | 2026-10-29T01:30:47Z |
| 2026-12-21 · one way | United Airlines | UA2671 | $209.25 | 2026-10-29T01:30:47Z |
| 2026-12-21 · one way | Southwest Airlines | WN1918 + WN1241 | $189.00 | 2026-10-29T01:30:47Z |
2026-12-21 · one way · $195.75
- Southwest Airlines WN3390: TUS 2026-12-21 14:40:00 → DEN 2026-12-21 16:35:00; nonstop; 115 minutes. Local airport times.
2026-12-21 · one way · $209.25
- United Airlines UA598: TUS 2026-12-21 06:30:00 → DEN 2026-12-21 08:27:00; nonstop; 117 minutes. Local airport times.
2026-12-21 · one way · $222.75
- American Airlines AA1934 / AA1762: TUS 2026-12-21 12:45:00 → DEN 2026-12-21 18:10:00; 1 stop(s) via PHX; 325 minutes. Local airport times.
- AA1934: TUS 2026-12-21 12:45:00 → PHX 2026-12-21 13:41:00; layover at PHX: 154 minutes.
- AA1762: PHX 2026-12-21 16:15:00 → DEN 2026-12-21 18:10:00.
2026-12-21 · one way · $243.00
- Delta Air Lines DL3836 / DL1667: TUS 2026-12-21 17:50:00 → DEN 2026-12-21 23:09:00; 1 stop(s) via SLC; 319 minutes. Local airport times.
- DL3836: TUS 2026-12-21 17:50:00 → SLC 2026-12-21 19:51:00; layover at SLC: 104 minutes.
- DL1667: SLC 2026-12-21 21:35:00 → DEN 2026-12-21 23:09:00.
2026-12-21 · one way · $195.75
- Southwest Airlines WN4580: TUS 2026-12-21 07:35:00 → DEN 2026-12-21 09:25:00; nonstop; 110 minutes. Local airport times.
2026-12-21 · one way · $209.25
- United Airlines UA2671: TUS 2026-12-21 14:46:00 → DEN 2026-12-21 16:41:00; nonstop; 115 minutes. Local airport times.
2026-12-21 · one way · $189.00
- Southwest Airlines WN1918 / WN1241: TUS 2026-12-21 06:30:00 → DEN 2026-12-21 11:10:00; 1 stop(s) via LAS; 280 minutes. Local airport times.
- WN1918: TUS 2026-12-21 06:30:00 → LAS 2026-12-21 06:50:00; layover at LAS: 80 minutes.
- WN1241: LAS 2026-12-21 08:10:00 → DEN 2026-12-21 11:10:00.