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San Francisco → Denver

Dec 2, 2026 · return Dec 7, 2026

SFO → DEN1 adulteconomyRound trip

12 flight options · 4 airlines

Nonstop flights

Wed, Dec 2 – Mon, Dec 7

Frontier Airlines
6:02 amSFO
2h 38m
Nonstop
9:40 amDEN
Frontier Airlines
10:52 pmDEN
2h 51m
Nonstop
12:43 am+1SFO

Round-trip total · 1 adult · Taxes included

Wed, Dec 2 – Mon, Dec 7

Southwest Airlines
8:00 amSFO
2h 30m
Nonstop
11:30 amDEN
Southwest Airlines
5:35 pmDEN
2h 45m
Nonstop
7:20 pmSFO

Round-trip total · 1 adult · Taxes included

Wed, Dec 2 – Mon, Dec 7

United Airlines
9:24 pmSFO
2h 35m
Nonstop
12:59 am+1DEN
United Airlines
3:37 pmDEN
2h 47m
Nonstop
5:24 pmSFO

Round-trip total · 1 adult · Taxes included

Wed, Dec 2 – Mon, Dec 7

Frontier Airlines
12:20 pmSFO
2h 39m
Nonstop
3:59 pmDEN
Frontier Airlines
10:52 pmDEN
2h 51m
Nonstop
12:43 am+1SFO

Round-trip total · 1 adult · Taxes included

Wed, Dec 2 – Mon, Dec 7

Southwest Airlines
5:50 amSFO
2h 30m
Nonstop
9:20 amDEN
Southwest Airlines
5:35 pmDEN
2h 45m
Nonstop
7:20 pmSFO

Round-trip total · 1 adult · Taxes included

Wed, Dec 2 – Mon, Dec 7

United Airlines
4:10 pmSFO
2h 35m
Nonstop
7:45 pmDEN
United Airlines
3:37 pmDEN
2h 47m
Nonstop
5:24 pmSFO

Round-trip total · 1 adult · Taxes included

One-stop flights

Wed, Dec 2 – Mon, Dec 7

Delta Air Lines
5:15 pmSFO
4h 54m
SLC · 1h 30m
11:09 pmDEN
Delta Air Lines
12:29 pmDEN
4h 45m
SLC · 1h 4m
4:14 pmSFO

Round-trip total · 1 adult · Taxes included

Wed, Dec 2 – Mon, Dec 7

Southwest Airlines
6:10 amSFO
4h 50m
BUR · 1h 5m
12:00 pmDEN
Southwest Airlines
5:35 pmDEN
2h 45m
Nonstop
7:20 pmSFO

Round-trip total · 1 adult · Taxes included

Wed, Dec 2 – Mon, Dec 7

United Airlines
10:38 amSFO
4h 55m
BUR · 1h 4m
4:33 pmDEN
United Airlines
3:37 pmDEN
2h 47m
Nonstop
5:24 pmSFO

Round-trip total · 1 adult · Taxes included

Wed, Dec 2 – Mon, Dec 7

United Airlines
10:40 amSFO
4h 50m
SBP · 1h 7m
4:30 pmDEN
United Airlines
3:37 pmDEN
2h 47m
Nonstop
5:24 pmSFO

Round-trip total · 1 adult · Taxes included

Wed, Dec 2 – Mon, Dec 7

United Airlines
10:51 amSFO
4h 44m
SBA · 1h 2m
4:35 pmDEN
United Airlines
3:37 pmDEN
2h 47m
Nonstop
5:24 pmSFO

Round-trip total · 1 adult · Taxes included

Wed, Dec 2 – Mon, Dec 7

United Airlines
11:00 amSFO
4h 55m
ONT · 1h 11m
4:55 pmDEN
United Airlines
3:37 pmDEN
2h 47m
Nonstop
5:24 pmSFO

Round-trip total · 1 adult · Taxes included

Make this trip yours

SFO ⇄ DEN

Economy

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

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  • Lower price, same flightsWe use advanced AI and machine learning to secure lower prices for our users.
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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

All dates for this routeNov 20, 2026 → Nov 23, 2026Nov 27, 2026 → Dec 4, 2026Nov 20, 2026 · One way
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 datesAirlineFlightsTotal pricePrice issued (UTC)
2026-12-02 → 2026-12-07Frontier AirlinesF91230 / F93439$165.002026-10-29T02:06:50Z
2026-12-02 → 2026-12-07Southwest AirlinesWN3428 / WN1817$280.002026-10-29T02:06:50Z
2026-12-02 → 2026-12-07United AirlinesUA301 / UA2633$300.002026-10-29T02:06:50Z
2026-12-02 → 2026-12-07Delta Air LinesDL1088 + DL1667 / DL1553 + DL1088$340.002026-10-29T02:06:50Z
2026-12-02 → 2026-12-07Frontier AirlinesF93436 / F93439$165.002026-10-29T02:06:50Z
2026-12-02 → 2026-12-07Southwest AirlinesWN4578 / WN1817$280.002026-10-29T02:06:50Z
2026-12-02 → 2026-12-07United AirlinesUA1533 / UA2633$300.002026-10-29T02:06:50Z
2026-12-02 → 2026-12-07Southwest AirlinesWN3839 + WN2776 / WN1817$270.002026-10-29T02:06:50Z
2026-12-02 → 2026-12-07United AirlinesUA2115 + UA2187 / UA2633$290.002026-10-29T02:06:50Z
2026-12-02 → 2026-12-07United AirlinesUA2367 + UA259 / UA2633$290.002026-10-29T02:06:50Z
2026-12-02 → 2026-12-07United AirlinesUA1578 + UA1790 / UA2633$290.002026-10-29T02:06:50Z
2026-12-02 → 2026-12-07United AirlinesUA1482 + UA1263 / UA2633$290.002026-10-29T02:06:50Z

2026-12-02 → 2026-12-07 · $165.00

  • Frontier Airlines F91230: SFO 2026-12-02 06:02:00 → DEN 2026-12-02 09:40:00; nonstop; 158 minutes. Local airport times.
  • Frontier Airlines F93439: DEN 2026-12-07 22:52:00 → SFO 2026-12-08 00:43:00; nonstop; 171 minutes. Local airport times.

2026-12-02 → 2026-12-07 · $280.00

  • Southwest Airlines WN3428: SFO 2026-12-02 08:00:00 → DEN 2026-12-02 11:30:00; nonstop; 150 minutes. Local airport times.
  • Southwest Airlines WN1817: DEN 2026-12-07 17:35:00 → SFO 2026-12-07 19:20:00; nonstop; 165 minutes. Local airport times.

2026-12-02 → 2026-12-07 · $300.00

  • United Airlines UA301: SFO 2026-12-02 21:24:00 → DEN 2026-12-03 00:59:00; nonstop; 155 minutes. Local airport times.
  • United Airlines UA2633: DEN 2026-12-07 15:37:00 → SFO 2026-12-07 17:24:00; nonstop; 167 minutes. Local airport times.

2026-12-02 → 2026-12-07 · $340.00

  • Delta Air Lines DL1088 / DL1667: SFO 2026-12-02 17:15:00 → DEN 2026-12-02 23:09:00; 1 stop(s) via SLC; 294 minutes. Local airport times.
    • DL1088: SFO 2026-12-02 17:15:00 → SLC 2026-12-02 20:05:00; layover at SLC: 90 minutes.
    • DL1667: SLC 2026-12-02 21:35:00 → DEN 2026-12-02 23:09:00.
  • Delta Air Lines DL1553 / DL1088: DEN 2026-12-07 12:29:00 → SFO 2026-12-07 16:14:00; 1 stop(s) via SLC; 285 minutes. Local airport times.
    • DL1553: DEN 2026-12-07 12:29:00 → SLC 2026-12-07 14:06:00; layover at SLC: 64 minutes.
    • DL1088: SLC 2026-12-07 15:10:00 → SFO 2026-12-07 16:14:00.

2026-12-02 → 2026-12-07 · $165.00

  • Frontier Airlines F93436: SFO 2026-12-02 12:20:00 → DEN 2026-12-02 15:59:00; nonstop; 159 minutes. Local airport times.
  • Frontier Airlines F93439: DEN 2026-12-07 22:52:00 → SFO 2026-12-08 00:43:00; nonstop; 171 minutes. Local airport times.

2026-12-02 → 2026-12-07 · $280.00

  • Southwest Airlines WN4578: SFO 2026-12-02 05:50:00 → DEN 2026-12-02 09:20:00; nonstop; 150 minutes. Local airport times.
  • Southwest Airlines WN1817: DEN 2026-12-07 17:35:00 → SFO 2026-12-07 19:20:00; nonstop; 165 minutes. Local airport times.

2026-12-02 → 2026-12-07 · $300.00

  • United Airlines UA1533: SFO 2026-12-02 16:10:00 → DEN 2026-12-02 19:45:00; nonstop; 155 minutes. Local airport times.
  • United Airlines UA2633: DEN 2026-12-07 15:37:00 → SFO 2026-12-07 17:24:00; nonstop; 167 minutes. Local airport times.

2026-12-02 → 2026-12-07 · $270.00

  • Southwest Airlines WN3839 / WN2776: SFO 2026-12-02 06:10:00 → DEN 2026-12-02 12:00:00; 1 stop(s) via BUR; 290 minutes. Local airport times.
    • WN3839: SFO 2026-12-02 06:10:00 → BUR 2026-12-02 07:35:00; layover at BUR: 65 minutes.
    • WN2776: BUR 2026-12-02 08:40:00 → DEN 2026-12-02 12:00:00.
  • Southwest Airlines WN1817: DEN 2026-12-07 17:35:00 → SFO 2026-12-07 19:20:00; nonstop; 165 minutes. Local airport times.

2026-12-02 → 2026-12-07 · $290.00

  • United Airlines UA2115 / UA2187: SFO 2026-12-02 10:38:00 → DEN 2026-12-02 16:33:00; 1 stop(s) via BUR; 295 minutes. Local airport times.
    • UA2115: SFO 2026-12-02 10:38:00 → BUR 2026-12-02 11:58:00; layover at BUR: 64 minutes.
    • UA2187: BUR 2026-12-02 13:02:00 → DEN 2026-12-02 16:33:00.
  • United Airlines UA2633: DEN 2026-12-07 15:37:00 → SFO 2026-12-07 17:24:00; nonstop; 167 minutes. Local airport times.

2026-12-02 → 2026-12-07 · $290.00

  • United Airlines UA2367 / UA259: SFO 2026-12-02 10:40:00 → DEN 2026-12-02 16:30:00; 1 stop(s) via SBP; 290 minutes. Local airport times.
    • UA2367: SFO 2026-12-02 10:40:00 → SBP 2026-12-02 11:50:00; layover at SBP: 67 minutes.
    • UA259: SBP 2026-12-02 12:57:00 → DEN 2026-12-02 16:30:00.
  • United Airlines UA2633: DEN 2026-12-07 15:37:00 → SFO 2026-12-07 17:24:00; nonstop; 167 minutes. Local airport times.

2026-12-02 → 2026-12-07 · $290.00

  • United Airlines UA1578 / UA1790: SFO 2026-12-02 10:51:00 → DEN 2026-12-02 16:35:00; 1 stop(s) via SBA; 284 minutes. Local airport times.
    • UA1578: SFO 2026-12-02 10:51:00 → SBA 2026-12-02 12:04:00; layover at SBA: 62 minutes.
    • UA1790: SBA 2026-12-02 13:06:00 → DEN 2026-12-02 16:35:00.
  • United Airlines UA2633: DEN 2026-12-07 15:37:00 → SFO 2026-12-07 17:24:00; nonstop; 167 minutes. Local airport times.

2026-12-02 → 2026-12-07 · $290.00

  • United Airlines UA1482 / UA1263: SFO 2026-12-02 11:00:00 → DEN 2026-12-02 16:55:00; 1 stop(s) via ONT; 295 minutes. Local airport times.
    • UA1482: SFO 2026-12-02 11:00:00 → ONT 2026-12-02 12:29:00; layover at ONT: 71 minutes.
    • UA1263: ONT 2026-12-02 13:40:00 → DEN 2026-12-02 16:55:00.
  • United Airlines UA2633: DEN 2026-12-07 15:37:00 → SFO 2026-12-07 17:24:00; nonstop; 167 minutes. Local airport times.

More dates for this route