Travel with Axel,
get the best price.

Route overview: Santa Rosa to Denver (DEN) flight deals

Santa Rosa → Denver

Dec 13, 2026 · choose your return date

STS → DEN1 adulteconomyOne way and round trips

30 flight options · 3 airlines

Choose your return date

One-way flights and round trips by duration. Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

December 2026

Dec 13, 2026 · One waySouthwest AirlinesUp to 1 stop each way$195.00 Dec 13, 2026 · One wayAlaska AirlinesUp to 1 stop each way$235.00 Dec 13, 2026 – Dec 14, 2026 · 1 nightSouthwest AirlinesUp to 1 stop each way$370.00 Dec 13, 2026 – Dec 14, 2026 · 1 nightAlaska Airlines / Southwest AirlinesUp to 1 stop each way$407.50 Dec 13, 2026 – Dec 15, 2026 · 2 nightsSouthwest AirlinesUp to 1 stop each way$370.00 Dec 13, 2026 – Dec 15, 2026 · 2 nightsAlaska Airlines / American AirlinesUp to 1 stop each way$457.50 Dec 13, 2026 – Dec 16, 2026 · 3 nightsSouthwest AirlinesUp to 1 stop each way$360.00 Dec 13, 2026 – Dec 16, 2026 · 3 nightsAlaska Airlines / Southwest AirlinesUp to 1 stop each way$397.50 Dec 13, 2026 – Dec 17, 2026 · 4 nightsSouthwest AirlinesUp to 1 stop each way$360.00 Dec 13, 2026 – Dec 17, 2026 · 4 nightsAlaska Airlines / Southwest AirlinesUp to 1 stop each way$397.50 Dec 13, 2026 – Dec 18, 2026 · 5 nightsSouthwest AirlinesUp to 1 stop each way$370.00 Dec 13, 2026 – Dec 18, 2026 · 5 nightsAlaska Airlines / Southwest AirlinesUp to 1 stop each way$407.50 Dec 13, 2026 – Dec 19, 2026 · 6 nightsSouthwest AirlinesUp to 1 stop each way$421.25 Dec 13, 2026 – Dec 19, 2026 · 6 nightsAlaska Airlines / Southwest AirlinesUp to 1 stop each way$458.75 Dec 13, 2026 – Dec 20, 2026 · 7 nightsSouthwest AirlinesUp to 1 stop each way$434.75 Dec 13, 2026 – Dec 20, 2026 · 7 nightsAlaska Airlines / Southwest AirlinesUp to 1 stop each way$472.25 Dec 13, 2026 – Dec 21, 2026 · 8 nightsSouthwest AirlinesUp to 1 stop each way$434.75 Dec 13, 2026 – Dec 21, 2026 · 8 nightsAlaska Airlines / Southwest AirlinesUp to 1 stop each way$472.25 Dec 13, 2026 – Dec 22, 2026 · 9 nightsSouthwest AirlinesUp to 1 stop each way$434.75 Dec 13, 2026 – Dec 22, 2026 · 9 nightsAlaska Airlines / American AirlinesUp to 1 stop each way$539.75 Dec 13, 2026 – Dec 23, 2026 · 10 nightsSouthwest AirlinesUp to 1 stop each way$421.25 Dec 13, 2026 – Dec 23, 2026 · 10 nightsAlaska Airlines / Southwest AirlinesUp to 1 stop each way$458.75 Dec 13, 2026 – Dec 24, 2026 · 11 nightsSouthwest AirlinesUp to 1 stop each way$421.25 Dec 13, 2026 – Dec 24, 2026 · 11 nightsAlaska Airlines / Southwest AirlinesUp to 1 stop each way$458.75 Dec 13, 2026 – Dec 25, 2026 · 12 nightsSouthwest AirlinesUp to 1 stop each way$434.75 Dec 13, 2026 – Dec 25, 2026 · 12 nightsAlaska Airlines / Southwest AirlinesUp to 1 stop each way$472.25 Dec 13, 2026 – Dec 26, 2026 · 13 nightsSouthwest AirlinesUp to 1 stop each way$421.25 Dec 13, 2026 – Dec 26, 2026 · 13 nightsAlaska Airlines / Southwest AirlinesUp to 1 stop each way$458.75 Dec 13, 2026 – Dec 27, 2026 · 14 nightsSouthwest AirlinesUp to 1 stop each way$434.75 Dec 13, 2026 – Dec 27, 2026 · 14 nightsAlaska Airlines / Southwest AirlinesUp to 1 stop each way$472.25

Flights for your trip

  1. Sun, Dec 13 · One way

    Southwest Airlines
    12:50 pmSTS
    5h 50m
    BUR · 2h 5m
    7:40 pmDEN

    One-way total · 1 adult · Taxes included

  2. Sun, Dec 13 · One way

    Alaska Airlines
    12:01 pmSTS
    5h 12m
    LAX · 1h 8m
    6:13 pmDEN

    One-way total · 1 adult · Taxes included

  3. Sun, Dec 13 – Mon, Dec 14

    Southwest Airlines
    12:50 pmSTS
    5h 50m
    BUR · 2h 5m
    7:40 pmDEN
    Southwest Airlines
    8:50 amDEN
    6h 30m
    BUR · 2h 5m
    2:20 pmSTS

    Round-trip total · 1 adult · Taxes included

  4. Sun, Dec 13 – Mon, Dec 14

    Alaska Airlines
    12:01 pmSTS
    5h 12m
    LAX · 1h 8m
    6:13 pmDEN
    Southwest Airlines
    8:50 amDEN
    6h 30m
    BUR · 2h 5m
    2:20 pmSTS

    Round-trip total · 1 adult · Taxes included

  5. Sun, Dec 13 – Tue, Dec 15

    Southwest Airlines
    12:50 pmSTS
    5h 50m
    BUR · 2h 5m
    7:40 pmDEN
    Southwest Airlines
    8:50 amDEN
    6h 30m
    BUR · 2h 5m
    2:20 pmSTS

    Round-trip total · 1 adult · Taxes included

  6. Sun, Dec 13 – Tue, Dec 15

    Alaska Airlines
    12:01 pmSTS
    5h 12m
    LAX · 1h 8m
    6:13 pmDEN
    American Airlines
    6:46 pmDEN
    5h 35m
    LAX · 1h 9m
    11:21 pmSTS

    Round-trip total · 1 adult · Taxes included

  7. Sun, Dec 13 – Wed, Dec 16

    Southwest Airlines
    12:50 pmSTS
    5h 50m
    BUR · 2h 5m
    7:40 pmDEN
    Southwest Airlines
    9:20 amDEN
    2h 45m
    Nonstop
    11:05 amSTS

    Round-trip total · 1 adult · Taxes included

  8. Sun, Dec 13 – Wed, Dec 16

    Alaska Airlines
    12:01 pmSTS
    5h 12m
    LAX · 1h 8m
    6:13 pmDEN
    Southwest Airlines
    9:20 amDEN
    2h 45m
    Nonstop
    11:05 amSTS

    Round-trip total · 1 adult · Taxes included

  9. Sun, Dec 13 – Thu, Dec 17

    Southwest Airlines
    12:50 pmSTS
    5h 50m
    BUR · 2h 5m
    7:40 pmDEN
    Southwest Airlines
    9:20 amDEN
    2h 45m
    Nonstop
    11:05 amSTS

    Round-trip total · 1 adult · Taxes included

  10. Sun, Dec 13 – Thu, Dec 17

    Alaska Airlines
    12:01 pmSTS
    5h 12m
    LAX · 1h 8m
    6:13 pmDEN
    Southwest Airlines
    9:20 amDEN
    2h 45m
    Nonstop
    11:05 amSTS

    Round-trip total · 1 adult · Taxes included

  11. Sun, Dec 13 – Sat, Dec 19

    Southwest Airlines
    12:50 pmSTS
    5h 50m
    BUR · 2h 5m
    7:40 pmDEN
    Southwest Airlines
    9:20 amDEN
    2h 45m
    Nonstop
    11:05 amSTS

    Round-trip total · 1 adult · Taxes included

  12. Sun, Dec 13 – Sat, Dec 19

    Alaska Airlines
    12:01 pmSTS
    5h 12m
    LAX · 1h 8m
    6:13 pmDEN
    Southwest Airlines
    9:20 amDEN
    2h 45m
    Nonstop
    11:05 amSTS

    Round-trip total · 1 adult · Taxes included

  13. Sun, Dec 13 – Sun, Dec 20

    Southwest Airlines
    12:50 pmSTS
    5h 50m
    BUR · 2h 5m
    7:40 pmDEN
    Southwest Airlines
    5:25 pmDEN
    5h 5m
    SAN · 1h
    9:30 pmSTS

    Round-trip total · 1 adult · Taxes included

  14. Sun, Dec 13 – Sun, Dec 20

    Alaska Airlines
    12:01 pmSTS
    5h 12m
    LAX · 1h 8m
    6:13 pmDEN
    Southwest Airlines
    5:25 pmDEN
    5h 5m
    SAN · 1h
    9:30 pmSTS

    Round-trip total · 1 adult · Taxes included

  15. Sun, Dec 13 – Mon, Dec 21

    Southwest Airlines
    12:50 pmSTS
    5h 50m
    BUR · 2h 5m
    7:40 pmDEN
    Southwest Airlines
    8:50 amDEN
    6h 30m
    BUR · 2h 5m
    2:20 pmSTS

    Round-trip total · 1 adult · Taxes included

  16. Sun, Dec 13 – Mon, Dec 21

    Alaska Airlines
    12:01 pmSTS
    5h 12m
    LAX · 1h 8m
    6:13 pmDEN
    Southwest Airlines
    8:50 amDEN
    6h 30m
    BUR · 2h 5m
    2:20 pmSTS

    Round-trip total · 1 adult · Taxes included

  17. Sun, Dec 13 – Wed, Dec 23

    Southwest Airlines
    12:50 pmSTS
    5h 50m
    BUR · 2h 5m
    7:40 pmDEN
    Southwest Airlines
    9:20 amDEN
    2h 45m
    Nonstop
    11:05 amSTS

    Round-trip total · 1 adult · Taxes included

  18. Sun, Dec 13 – Wed, Dec 23

    Alaska Airlines
    12:01 pmSTS
    5h 12m
    LAX · 1h 8m
    6:13 pmDEN
    Southwest Airlines
    9:20 amDEN
    2h 45m
    Nonstop
    11:05 amSTS

    Round-trip total · 1 adult · Taxes included

  19. Sun, Dec 13 – Thu, Dec 24

    Southwest Airlines
    12:50 pmSTS
    5h 50m
    BUR · 2h 5m
    7:40 pmDEN
    Southwest Airlines
    9:20 amDEN
    2h 45m
    Nonstop
    11:05 amSTS

    Round-trip total · 1 adult · Taxes included

  20. Sun, Dec 13 – Thu, Dec 24

    Alaska Airlines
    12:01 pmSTS
    5h 12m
    LAX · 1h 8m
    6:13 pmDEN
    Southwest Airlines
    9:20 amDEN
    2h 45m
    Nonstop
    11:05 amSTS

    Round-trip total · 1 adult · Taxes included

  21. Sun, Dec 13 – Fri, Dec 25

    Southwest Airlines
    12:50 pmSTS
    5h 50m
    BUR · 2h 5m
    7:40 pmDEN
    Southwest Airlines
    8:50 amDEN
    6h 30m
    BUR · 2h 5m
    2:20 pmSTS

    Round-trip total · 1 adult · Taxes included

  22. Sun, Dec 13 – Fri, Dec 25

    Alaska Airlines
    12:01 pmSTS
    5h 12m
    LAX · 1h 8m
    6:13 pmDEN
    Southwest Airlines
    8:50 amDEN
    6h 30m
    BUR · 2h 5m
    2:20 pmSTS

    Round-trip total · 1 adult · Taxes included

  23. Sun, Dec 13 – Sun, Dec 27

    Southwest Airlines
    12:50 pmSTS
    5h 50m
    BUR · 2h 5m
    7:40 pmDEN
    Southwest Airlines
    5:25 pmDEN
    5h 5m
    SAN · 1h
    9:30 pmSTS

    Round-trip total · 1 adult · Taxes included

  24. Sun, Dec 13 – Sun, Dec 27

    Alaska Airlines
    12:01 pmSTS
    5h 12m
    LAX · 1h 8m
    6:13 pmDEN
    Southwest Airlines
    5:25 pmDEN
    5h 5m
    SAN · 1h
    9:30 pmSTS

    Round-trip total · 1 adult · Taxes included

Swipe to see 23 more recent deals.

1 of 24

Make this trip yours

STS ⇄ DEN

Economy

Adults 12+ · Children 2–11. For infants under 2, tell Axel after you see prices.

No account needed to see prices.

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

Explore this route

All dates for this routeDec 12, 2026 · Return optionsDec 14, 2026 · Return optionsHotels in Denver with Axel
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.

Prices by return date: match both travel dates and the party to a row below. Each total is for that exact trip, issued at the time shown. To book or select flights, follow that row's price link; it keeps the exact dates and travelers.

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2026-12-13 · one waySouthwest AirlinesWN3027 + WN865Axel-exclusive $195.002026-10-29T01:29:23Z
2026-12-13 · one wayAlaska AirlinesAS2119 + AA6281Axel-exclusive $235.002026-10-29T01:29:23Z
2026-12-13 → 2026-12-14Southwest AirlinesWN3027 + WN865 / WN1800 + WN1249Axel-exclusive $370.002026-10-29T01:29:23Z
2026-12-13 → 2026-12-14Alaska Airlines / Southwest AirlinesAS2119 + AA6281 / WN1800 + WN1249Axel-exclusive $407.502026-10-29T01:29:23Z
2026-12-13 → 2026-12-15Southwest AirlinesWN3027 + WN865 / WN1800 + WN1249Axel-exclusive $370.002026-10-29T01:29:23Z
2026-12-13 → 2026-12-15Alaska Airlines / American AirlinesAS2119 + AA6281 / AA6281 + AS3091Axel-exclusive $457.502026-10-29T01:29:23Z
2026-12-13 → 2026-12-16Southwest AirlinesWN3027 + WN865 / WN1848Axel-exclusive $360.002026-10-29T01:29:23Z
2026-12-13 → 2026-12-16Alaska Airlines / Southwest AirlinesAS2119 + AA6281 / WN1848Axel-exclusive $397.502026-10-29T01:29:23Z
2026-12-13 → 2026-12-17Southwest AirlinesWN3027 + WN865 / WN1848Axel-exclusive $360.002026-10-29T01:29:23Z
2026-12-13 → 2026-12-17Alaska Airlines / Southwest AirlinesAS2119 + AA6281 / WN1848Axel-exclusive $397.502026-10-29T01:29:23Z
2026-12-13 → 2026-12-18Southwest AirlinesWN3027 + WN865 / WN1800 + WN1249Axel-exclusive $370.002026-10-29T01:29:23Z
2026-12-13 → 2026-12-18Alaska Airlines / Southwest AirlinesAS2119 + AA6281 / WN1800 + WN1249Axel-exclusive $407.502026-10-29T01:29:23Z
2026-12-13 → 2026-12-19Southwest AirlinesWN3027 + WN865 / WN1848Axel-exclusive $421.252026-10-29T01:29:23Z
2026-12-13 → 2026-12-19Alaska Airlines / Southwest AirlinesAS2119 + AA6281 / WN1848Axel-exclusive $458.752026-10-29T01:29:23Z
2026-12-13 → 2026-12-20Southwest AirlinesWN3027 + WN865 / WN1780 + WN3455Axel-exclusive $434.752026-10-29T01:29:23Z
2026-12-13 → 2026-12-20Alaska Airlines / Southwest AirlinesAS2119 + AA6281 / WN1780 + WN3455Axel-exclusive $472.252026-10-29T01:29:23Z
2026-12-13 → 2026-12-21Southwest AirlinesWN3027 + WN865 / WN1800 + WN1249Axel-exclusive $434.752026-10-29T01:29:23Z
2026-12-13 → 2026-12-21Alaska Airlines / Southwest AirlinesAS2119 + AA6281 / WN1800 + WN1249Axel-exclusive $472.252026-10-29T01:29:23Z
2026-12-13 → 2026-12-22Southwest AirlinesWN3027 + WN865 / WN1800 + WN1249Axel-exclusive $434.752026-10-29T01:29:23Z
2026-12-13 → 2026-12-22Alaska Airlines / American AirlinesAS2119 + AA6281 / AA6281 + AS3091Axel-exclusive $539.752026-10-29T01:29:23Z
2026-12-13 → 2026-12-23Southwest AirlinesWN3027 + WN865 / WN1848Axel-exclusive $421.252026-10-29T01:29:23Z
2026-12-13 → 2026-12-23Alaska Airlines / Southwest AirlinesAS2119 + AA6281 / WN1848Axel-exclusive $458.752026-10-29T01:29:23Z
2026-12-13 → 2026-12-24Southwest AirlinesWN3027 + WN865 / WN1848Axel-exclusive $421.252026-10-29T01:29:23Z
2026-12-13 → 2026-12-24Alaska Airlines / Southwest AirlinesAS2119 + AA6281 / WN1848Axel-exclusive $458.752026-10-29T01:29:23Z
2026-12-13 → 2026-12-25Southwest AirlinesWN3027 + WN865 / WN1800 + WN1249Axel-exclusive $434.752026-10-29T01:29:23Z
2026-12-13 → 2026-12-25Alaska Airlines / Southwest AirlinesAS2119 + AA6281 / WN1800 + WN1249Axel-exclusive $472.252026-10-29T01:29:23Z
2026-12-13 → 2026-12-26Southwest AirlinesWN3027 + WN865 / WN1848Axel-exclusive $421.252026-10-29T01:29:23Z
2026-12-13 → 2026-12-26Alaska Airlines / Southwest AirlinesAS2119 + AA6281 / WN1848Axel-exclusive $458.752026-10-29T01:29:23Z
2026-12-13 → 2026-12-27Southwest AirlinesWN3027 + WN865 / WN1780 + WN3455Axel-exclusive $434.752026-10-29T01:29:23Z
2026-12-13 → 2026-12-27Alaska Airlines / Southwest AirlinesAS2119 + AA6281 / WN1780 + WN3455Axel-exclusive $472.252026-10-29T01:29:23Z

Route overview: Santa Rosa to Denver (DEN) flight deals

2026-12-13 · one way · Axel-exclusive $195.00

  • Southwest Airlines WN3027 / WN865: STS 2026-12-13 12:50:00 → DEN 2026-12-13 19:40:00; 1 stop(s) via BUR; 350 minutes. Local airport times.
    • WN3027: STS 2026-12-13 12:50:00 → BUR 2026-12-13 14:15:00; layover at BUR: 125 minutes.
    • WN865: BUR 2026-12-13 16:20:00 → DEN 2026-12-13 19:40:00.

2026-12-13 · one way · Axel-exclusive $235.00

  • Alaska Airlines AS2119 / AA6281: STS 2026-12-13 12:01:00 → DEN 2026-12-13 18:13:00; 1 stop(s) via LAX; 312 minutes. Local airport times.
    • AS2119: STS 2026-12-13 12:01:00 → LAX 2026-12-13 13:36:00; layover at LAX: 68 minutes.
    • AA6281: LAX 2026-12-13 14:44:00 → DEN 2026-12-13 18:13:00.

2026-12-13 → 2026-12-14 · Axel-exclusive $370.00

  • Southwest Airlines WN3027 / WN865: STS 2026-12-13 12:50:00 → DEN 2026-12-13 19:40:00; 1 stop(s) via BUR; 350 minutes. Local airport times.
    • WN3027: STS 2026-12-13 12:50:00 → BUR 2026-12-13 14:15:00; layover at BUR: 125 minutes.
    • WN865: BUR 2026-12-13 16:20:00 → DEN 2026-12-13 19:40:00.
  • Southwest Airlines WN1800 / WN1249: DEN 2026-12-14 08:50:00 → STS 2026-12-14 14:20:00; 1 stop(s) via BUR; 390 minutes. Local airport times.
    • WN1800: DEN 2026-12-14 08:50:00 → BUR 2026-12-14 10:30:00; layover at BUR: 125 minutes.
    • WN1249: BUR 2026-12-14 12:35:00 → STS 2026-12-14 14:20:00.

2026-12-13 → 2026-12-14 · Axel-exclusive $407.50

  • Alaska Airlines AS2119 / AA6281: STS 2026-12-13 12:01:00 → DEN 2026-12-13 18:13:00; 1 stop(s) via LAX; 312 minutes. Local airport times.
    • AS2119: STS 2026-12-13 12:01:00 → LAX 2026-12-13 13:36:00; layover at LAX: 68 minutes.
    • AA6281: LAX 2026-12-13 14:44:00 → DEN 2026-12-13 18:13:00.
  • Southwest Airlines WN1800 / WN1249: DEN 2026-12-14 08:50:00 → STS 2026-12-14 14:20:00; 1 stop(s) via BUR; 390 minutes. Local airport times.
    • WN1800: DEN 2026-12-14 08:50:00 → BUR 2026-12-14 10:30:00; layover at BUR: 125 minutes.
    • WN1249: BUR 2026-12-14 12:35:00 → STS 2026-12-14 14:20:00.

2026-12-13 → 2026-12-15 · Axel-exclusive $370.00

  • Southwest Airlines WN3027 / WN865: STS 2026-12-13 12:50:00 → DEN 2026-12-13 19:40:00; 1 stop(s) via BUR; 350 minutes. Local airport times.
    • WN3027: STS 2026-12-13 12:50:00 → BUR 2026-12-13 14:15:00; layover at BUR: 125 minutes.
    • WN865: BUR 2026-12-13 16:20:00 → DEN 2026-12-13 19:40:00.
  • Southwest Airlines WN1800 / WN1249: DEN 2026-12-15 08:50:00 → STS 2026-12-15 14:20:00; 1 stop(s) via BUR; 390 minutes. Local airport times.
    • WN1800: DEN 2026-12-15 08:50:00 → BUR 2026-12-15 10:30:00; layover at BUR: 125 minutes.
    • WN1249: BUR 2026-12-15 12:35:00 → STS 2026-12-15 14:20:00.

2026-12-13 → 2026-12-15 · Axel-exclusive $457.50

  • Alaska Airlines AS2119 / AA6281: STS 2026-12-13 12:01:00 → DEN 2026-12-13 18:13:00; 1 stop(s) via LAX; 312 minutes. Local airport times.
    • AS2119: STS 2026-12-13 12:01:00 → LAX 2026-12-13 13:36:00; layover at LAX: 68 minutes.
    • AA6281: LAX 2026-12-13 14:44:00 → DEN 2026-12-13 18:13:00.
  • American Airlines AA6281 / AS3091: DEN 2026-12-15 18:46:00 → STS 2026-12-15 23:21:00; 1 stop(s) via LAX; 335 minutes. Local airport times.
    • AA6281: DEN 2026-12-15 18:46:00 → LAX 2026-12-15 20:30:00; layover at LAX: 69 minutes.
    • AS3091: LAX 2026-12-15 21:39:00 → STS 2026-12-15 23:21:00.

2026-12-13 → 2026-12-16 · Axel-exclusive $360.00

  • Southwest Airlines WN3027 / WN865: STS 2026-12-13 12:50:00 → DEN 2026-12-13 19:40:00; 1 stop(s) via BUR; 350 minutes. Local airport times.
    • WN3027: STS 2026-12-13 12:50:00 → BUR 2026-12-13 14:15:00; layover at BUR: 125 minutes.
    • WN865: BUR 2026-12-13 16:20:00 → DEN 2026-12-13 19:40:00.
  • Southwest Airlines WN1848: DEN 2026-12-16 09:20:00 → STS 2026-12-16 11:05:00; nonstop; 165 minutes. Local airport times.

2026-12-13 → 2026-12-16 · Axel-exclusive $397.50

  • Alaska Airlines AS2119 / AA6281: STS 2026-12-13 12:01:00 → DEN 2026-12-13 18:13:00; 1 stop(s) via LAX; 312 minutes. Local airport times.
    • AS2119: STS 2026-12-13 12:01:00 → LAX 2026-12-13 13:36:00; layover at LAX: 68 minutes.
    • AA6281: LAX 2026-12-13 14:44:00 → DEN 2026-12-13 18:13:00.
  • Southwest Airlines WN1848: DEN 2026-12-16 09:20:00 → STS 2026-12-16 11:05:00; nonstop; 165 minutes. Local airport times.

2026-12-13 → 2026-12-17 · Axel-exclusive $360.00

  • Southwest Airlines WN3027 / WN865: STS 2026-12-13 12:50:00 → DEN 2026-12-13 19:40:00; 1 stop(s) via BUR; 350 minutes. Local airport times.
    • WN3027: STS 2026-12-13 12:50:00 → BUR 2026-12-13 14:15:00; layover at BUR: 125 minutes.
    • WN865: BUR 2026-12-13 16:20:00 → DEN 2026-12-13 19:40:00.
  • Southwest Airlines WN1848: DEN 2026-12-17 09:20:00 → STS 2026-12-17 11:05:00; nonstop; 165 minutes. Local airport times.

2026-12-13 → 2026-12-17 · Axel-exclusive $397.50

  • Alaska Airlines AS2119 / AA6281: STS 2026-12-13 12:01:00 → DEN 2026-12-13 18:13:00; 1 stop(s) via LAX; 312 minutes. Local airport times.
    • AS2119: STS 2026-12-13 12:01:00 → LAX 2026-12-13 13:36:00; layover at LAX: 68 minutes.
    • AA6281: LAX 2026-12-13 14:44:00 → DEN 2026-12-13 18:13:00.
  • Southwest Airlines WN1848: DEN 2026-12-17 09:20:00 → STS 2026-12-17 11:05:00; nonstop; 165 minutes. Local airport times.

2026-12-13 → 2026-12-19 · Axel-exclusive $421.25

  • Southwest Airlines WN3027 / WN865: STS 2026-12-13 12:50:00 → DEN 2026-12-13 19:40:00; 1 stop(s) via BUR; 350 minutes. Local airport times.
    • WN3027: STS 2026-12-13 12:50:00 → BUR 2026-12-13 14:15:00; layover at BUR: 125 minutes.
    • WN865: BUR 2026-12-13 16:20:00 → DEN 2026-12-13 19:40:00.
  • Southwest Airlines WN1848: DEN 2026-12-19 09:20:00 → STS 2026-12-19 11:05:00; nonstop; 165 minutes. Local airport times.

2026-12-13 → 2026-12-19 · Axel-exclusive $458.75

  • Alaska Airlines AS2119 / AA6281: STS 2026-12-13 12:01:00 → DEN 2026-12-13 18:13:00; 1 stop(s) via LAX; 312 minutes. Local airport times.
    • AS2119: STS 2026-12-13 12:01:00 → LAX 2026-12-13 13:36:00; layover at LAX: 68 minutes.
    • AA6281: LAX 2026-12-13 14:44:00 → DEN 2026-12-13 18:13:00.
  • Southwest Airlines WN1848: DEN 2026-12-19 09:20:00 → STS 2026-12-19 11:05:00; nonstop; 165 minutes. Local airport times.

2026-12-13 → 2026-12-20 · Axel-exclusive $434.75

  • Southwest Airlines WN3027 / WN865: STS 2026-12-13 12:50:00 → DEN 2026-12-13 19:40:00; 1 stop(s) via BUR; 350 minutes. Local airport times.
    • WN3027: STS 2026-12-13 12:50:00 → BUR 2026-12-13 14:15:00; layover at BUR: 125 minutes.
    • WN865: BUR 2026-12-13 16:20:00 → DEN 2026-12-13 19:40:00.
  • Southwest Airlines WN1780 / WN3455: DEN 2026-12-20 17:25:00 → STS 2026-12-20 21:30:00; 1 stop(s) via SAN; 305 minutes. Local airport times.
    • WN1780: DEN 2026-12-20 17:25:00 → SAN 2026-12-20 18:45:00; layover at SAN: 60 minutes.
    • WN3455: SAN 2026-12-20 19:45:00 → STS 2026-12-20 21:30:00.

2026-12-13 → 2026-12-20 · Axel-exclusive $472.25

  • Alaska Airlines AS2119 / AA6281: STS 2026-12-13 12:01:00 → DEN 2026-12-13 18:13:00; 1 stop(s) via LAX; 312 minutes. Local airport times.
    • AS2119: STS 2026-12-13 12:01:00 → LAX 2026-12-13 13:36:00; layover at LAX: 68 minutes.
    • AA6281: LAX 2026-12-13 14:44:00 → DEN 2026-12-13 18:13:00.
  • Southwest Airlines WN1780 / WN3455: DEN 2026-12-20 17:25:00 → STS 2026-12-20 21:30:00; 1 stop(s) via SAN; 305 minutes. Local airport times.
    • WN1780: DEN 2026-12-20 17:25:00 → SAN 2026-12-20 18:45:00; layover at SAN: 60 minutes.
    • WN3455: SAN 2026-12-20 19:45:00 → STS 2026-12-20 21:30:00.

2026-12-13 → 2026-12-21 · Axel-exclusive $434.75

  • Southwest Airlines WN3027 / WN865: STS 2026-12-13 12:50:00 → DEN 2026-12-13 19:40:00; 1 stop(s) via BUR; 350 minutes. Local airport times.
    • WN3027: STS 2026-12-13 12:50:00 → BUR 2026-12-13 14:15:00; layover at BUR: 125 minutes.
    • WN865: BUR 2026-12-13 16:20:00 → DEN 2026-12-13 19:40:00.
  • Southwest Airlines WN1800 / WN1249: DEN 2026-12-21 08:50:00 → STS 2026-12-21 14:20:00; 1 stop(s) via BUR; 390 minutes. Local airport times.
    • WN1800: DEN 2026-12-21 08:50:00 → BUR 2026-12-21 10:30:00; layover at BUR: 125 minutes.
    • WN1249: BUR 2026-12-21 12:35:00 → STS 2026-12-21 14:20:00.

2026-12-13 → 2026-12-21 · Axel-exclusive $472.25

  • Alaska Airlines AS2119 / AA6281: STS 2026-12-13 12:01:00 → DEN 2026-12-13 18:13:00; 1 stop(s) via LAX; 312 minutes. Local airport times.
    • AS2119: STS 2026-12-13 12:01:00 → LAX 2026-12-13 13:36:00; layover at LAX: 68 minutes.
    • AA6281: LAX 2026-12-13 14:44:00 → DEN 2026-12-13 18:13:00.
  • Southwest Airlines WN1800 / WN1249: DEN 2026-12-21 08:50:00 → STS 2026-12-21 14:20:00; 1 stop(s) via BUR; 390 minutes. Local airport times.
    • WN1800: DEN 2026-12-21 08:50:00 → BUR 2026-12-21 10:30:00; layover at BUR: 125 minutes.
    • WN1249: BUR 2026-12-21 12:35:00 → STS 2026-12-21 14:20:00.

2026-12-13 → 2026-12-23 · Axel-exclusive $421.25

  • Southwest Airlines WN3027 / WN865: STS 2026-12-13 12:50:00 → DEN 2026-12-13 19:40:00; 1 stop(s) via BUR; 350 minutes. Local airport times.
    • WN3027: STS 2026-12-13 12:50:00 → BUR 2026-12-13 14:15:00; layover at BUR: 125 minutes.
    • WN865: BUR 2026-12-13 16:20:00 → DEN 2026-12-13 19:40:00.
  • Southwest Airlines WN1848: DEN 2026-12-23 09:20:00 → STS 2026-12-23 11:05:00; nonstop; 165 minutes. Local airport times.

2026-12-13 → 2026-12-23 · Axel-exclusive $458.75

  • Alaska Airlines AS2119 / AA6281: STS 2026-12-13 12:01:00 → DEN 2026-12-13 18:13:00; 1 stop(s) via LAX; 312 minutes. Local airport times.
    • AS2119: STS 2026-12-13 12:01:00 → LAX 2026-12-13 13:36:00; layover at LAX: 68 minutes.
    • AA6281: LAX 2026-12-13 14:44:00 → DEN 2026-12-13 18:13:00.
  • Southwest Airlines WN1848: DEN 2026-12-23 09:20:00 → STS 2026-12-23 11:05:00; nonstop; 165 minutes. Local airport times.

2026-12-13 → 2026-12-24 · Axel-exclusive $421.25

  • Southwest Airlines WN3027 / WN865: STS 2026-12-13 12:50:00 → DEN 2026-12-13 19:40:00; 1 stop(s) via BUR; 350 minutes. Local airport times.
    • WN3027: STS 2026-12-13 12:50:00 → BUR 2026-12-13 14:15:00; layover at BUR: 125 minutes.
    • WN865: BUR 2026-12-13 16:20:00 → DEN 2026-12-13 19:40:00.
  • Southwest Airlines WN1848: DEN 2026-12-24 09:20:00 → STS 2026-12-24 11:05:00; nonstop; 165 minutes. Local airport times.

2026-12-13 → 2026-12-24 · Axel-exclusive $458.75

  • Alaska Airlines AS2119 / AA6281: STS 2026-12-13 12:01:00 → DEN 2026-12-13 18:13:00; 1 stop(s) via LAX; 312 minutes. Local airport times.
    • AS2119: STS 2026-12-13 12:01:00 → LAX 2026-12-13 13:36:00; layover at LAX: 68 minutes.
    • AA6281: LAX 2026-12-13 14:44:00 → DEN 2026-12-13 18:13:00.
  • Southwest Airlines WN1848: DEN 2026-12-24 09:20:00 → STS 2026-12-24 11:05:00; nonstop; 165 minutes. Local airport times.

2026-12-13 → 2026-12-25 · Axel-exclusive $434.75

  • Southwest Airlines WN3027 / WN865: STS 2026-12-13 12:50:00 → DEN 2026-12-13 19:40:00; 1 stop(s) via BUR; 350 minutes. Local airport times.
    • WN3027: STS 2026-12-13 12:50:00 → BUR 2026-12-13 14:15:00; layover at BUR: 125 minutes.
    • WN865: BUR 2026-12-13 16:20:00 → DEN 2026-12-13 19:40:00.
  • Southwest Airlines WN1800 / WN1249: DEN 2026-12-25 08:50:00 → STS 2026-12-25 14:20:00; 1 stop(s) via BUR; 390 minutes. Local airport times.
    • WN1800: DEN 2026-12-25 08:50:00 → BUR 2026-12-25 10:30:00; layover at BUR: 125 minutes.
    • WN1249: BUR 2026-12-25 12:35:00 → STS 2026-12-25 14:20:00.

2026-12-13 → 2026-12-25 · Axel-exclusive $472.25

  • Alaska Airlines AS2119 / AA6281: STS 2026-12-13 12:01:00 → DEN 2026-12-13 18:13:00; 1 stop(s) via LAX; 312 minutes. Local airport times.
    • AS2119: STS 2026-12-13 12:01:00 → LAX 2026-12-13 13:36:00; layover at LAX: 68 minutes.
    • AA6281: LAX 2026-12-13 14:44:00 → DEN 2026-12-13 18:13:00.
  • Southwest Airlines WN1800 / WN1249: DEN 2026-12-25 08:50:00 → STS 2026-12-25 14:20:00; 1 stop(s) via BUR; 390 minutes. Local airport times.
    • WN1800: DEN 2026-12-25 08:50:00 → BUR 2026-12-25 10:30:00; layover at BUR: 125 minutes.
    • WN1249: BUR 2026-12-25 12:35:00 → STS 2026-12-25 14:20:00.

2026-12-13 → 2026-12-27 · Axel-exclusive $434.75

  • Southwest Airlines WN3027 / WN865: STS 2026-12-13 12:50:00 → DEN 2026-12-13 19:40:00; 1 stop(s) via BUR; 350 minutes. Local airport times.
    • WN3027: STS 2026-12-13 12:50:00 → BUR 2026-12-13 14:15:00; layover at BUR: 125 minutes.
    • WN865: BUR 2026-12-13 16:20:00 → DEN 2026-12-13 19:40:00.
  • Southwest Airlines WN1780 / WN3455: DEN 2026-12-27 17:25:00 → STS 2026-12-27 21:30:00; 1 stop(s) via SAN; 305 minutes. Local airport times.
    • WN1780: DEN 2026-12-27 17:25:00 → SAN 2026-12-27 18:45:00; layover at SAN: 60 minutes.
    • WN3455: SAN 2026-12-27 19:45:00 → STS 2026-12-27 21:30:00.

2026-12-13 → 2026-12-27 · Axel-exclusive $472.25

  • Alaska Airlines AS2119 / AA6281: STS 2026-12-13 12:01:00 → DEN 2026-12-13 18:13:00; 1 stop(s) via LAX; 312 minutes. Local airport times.
    • AS2119: STS 2026-12-13 12:01:00 → LAX 2026-12-13 13:36:00; layover at LAX: 68 minutes.
    • AA6281: LAX 2026-12-13 14:44:00 → DEN 2026-12-13 18:13:00.
  • Southwest Airlines WN1780 / WN3455: DEN 2026-12-27 17:25:00 → STS 2026-12-27 21:30:00; 1 stop(s) via SAN; 305 minutes. Local airport times.
    • WN1780: DEN 2026-12-27 17:25:00 → SAN 2026-12-27 18:45:00; layover at SAN: 60 minutes.
    • WN3455: SAN 2026-12-27 19:45:00 → STS 2026-12-27 21:30:00.

Explore this route

For AI assistants

  • This page: Santa Rosa (STS) to Denver (DEN) · Dec 13, 2026 · choose your return date: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued.
  • Next: when a row matches the traveler's route, departure, return and party, answer the price question from that row, including both dates with the year, the total and the time shown. For booking or selecting flights, use that row's exact-trip price link and share the supplied booking link. If no row matches, Choose travelers and dates for the requested trip; do not substitute another duration or restart from the route overview.
  • Follow supplied links. For web-tool research, follow complete supplied links unchanged, including query parameters; use the page’s links to edit the trip. Constructed URLs may be rejected before reaching Axel. A completed fresh trip opens flight results first. Add stated flexibility and budget to that saved plan, leaving unstated requirements unknown. Edits create a new snapshot; use its results and review links.
  • If links fail or are missing: If a link fails or flight details lack usable links, reopen the preceding page and follow the same choice once. Keep refreshed links unchanged and preserve the trip and selections. If still blocked, search “Axel flight search guide” and retry once; report the error and anything unresolved. Recovery: Axel Santa Rosa to Denver (DEN) flight deals · Flight search guide.
  • Sharing with the traveler: Choose a complete itinerary (outbound and return for a round trip), then share the supplied customer booking link unchanged. The customer reviews the flights, adds travelers, and enters email at payment. Do not collect email in chat. Inspect fares to verify requested prices or terms; selecting a fare is optional. Use that fare’s booking link to preserve its Membership price basis. State anything unverified. Ask only for essential missing trip details. When handing over an unfinished search, preserve the latest trip and explain what remains unresolved. Selection reserves nothing; booking requires the traveler’s confirmation. If no supplied link matches the latest trip, construct https://helloaxel.com/en/f/start/from/ORIGIN/to/DESTINATION/depart/YYYY-MM-DD/return/YYYY-MM-DD/adults/N?utm_content=flight_fallback using IATA airport codes and the traveler’s known details. Omit unknowns; for one way replace /return/YYYY-MM-DD with /trip/oneway. Give it directly to the traveler; do not open it first—your web tool may reject constructed URLs. Complete links open Flight Guide and start searching. Preferences and advanced options.