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San Francisco → Denver

Dec 8, 2026 · return Dec 22, 2026

SFO → DEN1 adulteconomyRound trip

12 flight options · 4 airlines

Nonstop flights

Tue, Dec 8 – Tue, Dec 22

Frontier Airlines
6:15 amSFO
2h 38m
Nonstop
9:53 amDEN
Frontier Airlines
10:29 pmDEN
2h 51m
Nonstop
12:20 am+1SFO

Round-trip total · 1 adult · Taxes included

Tue, Dec 8 – Tue, Dec 22

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

Tue, Dec 8 – Tue, Dec 22

United Airlines
4:42 pmSFO
2h 35m
Nonstop
8:17 pmDEN
United Airlines
5:25 pmDEN
2h 46m
Nonstop
7:11 pmSFO

Round-trip total · 1 adult · Taxes included

Tue, Dec 8 – Tue, Dec 22

Frontier Airlines
9:23 pmSFO
2h 35m
Nonstop
12:58 am+1DEN
Frontier Airlines
10:29 pmDEN
2h 51m
Nonstop
12:20 am+1SFO

Round-trip total · 1 adult · Taxes included

Tue, Dec 8 – Tue, Dec 22

Southwest Airlines
1:20 pmSFO
2h 35m
Nonstop
4:55 pmDEN
Southwest Airlines
5:35 pmDEN
2h 45m
Nonstop
7:20 pmSFO

Round-trip total · 1 adult · Taxes included

Tue, Dec 8 – Tue, Dec 22

United Airlines
6:41 pmSFO
2h 34m
Nonstop
10:15 pmDEN
United Airlines
5:25 pmDEN
2h 46m
Nonstop
7:11 pmSFO

Round-trip total · 1 adult · Taxes included

One-stop flights

Tue, Dec 8 – Tue, Dec 22

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

Tue, Dec 8 – Tue, Dec 22

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

Tue, Dec 8 – Tue, Dec 22

United Airlines
11:00 amSFO
4h 55m
ONT · 1h 11m
4:55 pmDEN
United Airlines
5:25 pmDEN
2h 46m
Nonstop
7:11 pmSFO

Round-trip total · 1 adult · Taxes included

Tue, Dec 8 – Tue, Dec 22

United Airlines
10:38 amSFO
4h 55m
BUR · 1h 4m
4:33 pmDEN
United Airlines
5:25 pmDEN
2h 46m
Nonstop
7:11 pmSFO

Round-trip total · 1 adult · Taxes included

Tue, Dec 8 – Tue, Dec 22

United Airlines
10:51 amSFO
4h 44m
SBA · 1h 2m
4:35 pmDEN
United Airlines
5:25 pmDEN
2h 46m
Nonstop
7:11 pmSFO

Round-trip total · 1 adult · Taxes included

Tue, Dec 8 – Tue, Dec 22

United Airlines
10:40 amSFO
4h 50m
SBP · 1h 7m
4:30 pmDEN
United Airlines
5:25 pmDEN
2h 46m
Nonstop
7:11 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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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 24, 2026 → Nov 29, 2026Dec 22, 2026 → Dec 27, 2026Dec 30, 2026 → Jan 2, 2027Jan 15, 2027 → Jan 18, 2027Oct 30, 2026 → Nov 2, 2026Oct 31, 2026 → Nov 7, 2026Nov 27, 2026 → Nov 30, 2026Nov 28, 2026 → Dec 5, 2026Dec 25, 2026 → Dec 28, 2026Dec 26, 2026 → Jan 2, 2027Jan 22, 2027 → Jan 25, 2027Oct 30, 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)
2026-12-08 → 2026-12-22Frontier AirlinesF91230 / F93439$189.752026-10-29T02:06:50Z
2026-12-08 → 2026-12-22Southwest AirlinesWN3428 / WN1817$322.002026-10-29T02:06:50Z
2026-12-08 → 2026-12-22United AirlinesUA1924 / UA1510$345.002026-10-29T02:06:50Z
2026-12-08 → 2026-12-22Delta Air LinesDL1088 + DL1667 / DL1553 + DL1088$391.002026-10-29T02:06:50Z
2026-12-08 → 2026-12-22Frontier AirlinesF94310 / F93439$189.752026-10-29T02:06:50Z
2026-12-08 → 2026-12-22Southwest AirlinesWN1652 / WN1817$322.002026-10-29T02:06:50Z
2026-12-08 → 2026-12-22United AirlinesUA1412 / UA1510$345.002026-10-29T02:06:50Z
2026-12-08 → 2026-12-22Southwest AirlinesWN3839 + WN2776 / WN1817$312.002026-10-29T02:06:50Z
2026-12-08 → 2026-12-22United AirlinesUA1482 + UA1263 / UA1510$335.002026-10-29T02:06:50Z
2026-12-08 → 2026-12-22United AirlinesUA2115 + UA2187 / UA1510$335.002026-10-29T02:06:50Z
2026-12-08 → 2026-12-22United AirlinesUA1578 + UA1790 / UA1510$335.002026-10-29T02:06:50Z
2026-12-08 → 2026-12-22United AirlinesUA2367 + UA259 / UA1510$335.002026-10-29T02:06:50Z

2026-12-08 → 2026-12-22 · $189.75

  • Frontier Airlines F91230: SFO 2026-12-08 06:15:00 → DEN 2026-12-08 09:53:00; nonstop; 158 minutes. Local airport times.
  • Frontier Airlines F93439: DEN 2026-12-22 22:29:00 → SFO 2026-12-23 00:20:00; nonstop; 171 minutes. Local airport times.

2026-12-08 → 2026-12-22 · $322.00

  • Southwest Airlines WN3428: SFO 2026-12-08 08:00:00 → DEN 2026-12-08 11:30:00; nonstop; 150 minutes. Local airport times.
  • Southwest Airlines WN1817: DEN 2026-12-22 17:35:00 → SFO 2026-12-22 19:20:00; nonstop; 165 minutes. Local airport times.

2026-12-08 → 2026-12-22 · $345.00

  • United Airlines UA1924: SFO 2026-12-08 16:42:00 → DEN 2026-12-08 20:17:00; nonstop; 155 minutes. Local airport times.
  • United Airlines UA1510: DEN 2026-12-22 17:25:00 → SFO 2026-12-22 19:11:00; nonstop; 166 minutes. Local airport times.

2026-12-08 → 2026-12-22 · $391.00

  • Delta Air Lines DL1088 / DL1667: SFO 2026-12-08 17:15:00 → DEN 2026-12-08 23:09:00; 1 stop(s) via SLC; 294 minutes. Local airport times.
    • DL1088: SFO 2026-12-08 17:15:00 → SLC 2026-12-08 20:05:00; layover at SLC: 90 minutes.
    • DL1667: SLC 2026-12-08 21:35:00 → DEN 2026-12-08 23:09:00.
  • Delta Air Lines DL1553 / DL1088: DEN 2026-12-22 12:29:00 → SFO 2026-12-22 16:14:00; 1 stop(s) via SLC; 285 minutes. Local airport times.
    • DL1553: DEN 2026-12-22 12:29:00 → SLC 2026-12-22 14:06:00; layover at SLC: 64 minutes.
    • DL1088: SLC 2026-12-22 15:10:00 → SFO 2026-12-22 16:14:00.

2026-12-08 → 2026-12-22 · $189.75

  • Frontier Airlines F94310: SFO 2026-12-08 21:23:00 → DEN 2026-12-09 00:58:00; nonstop; 155 minutes. Local airport times.
  • Frontier Airlines F93439: DEN 2026-12-22 22:29:00 → SFO 2026-12-23 00:20:00; nonstop; 171 minutes. Local airport times.

2026-12-08 → 2026-12-22 · $322.00

  • Southwest Airlines WN1652: SFO 2026-12-08 13:20:00 → DEN 2026-12-08 16:55:00; nonstop; 155 minutes. Local airport times.
  • Southwest Airlines WN1817: DEN 2026-12-22 17:35:00 → SFO 2026-12-22 19:20:00; nonstop; 165 minutes. Local airport times.

2026-12-08 → 2026-12-22 · $345.00

  • United Airlines UA1412: SFO 2026-12-08 18:41:00 → DEN 2026-12-08 22:15:00; nonstop; 154 minutes. Local airport times.
  • United Airlines UA1510: DEN 2026-12-22 17:25:00 → SFO 2026-12-22 19:11:00; nonstop; 166 minutes. Local airport times.

2026-12-08 → 2026-12-22 · $312.00

  • Southwest Airlines WN3839 / WN2776: SFO 2026-12-08 06:10:00 → DEN 2026-12-08 12:00:00; 1 stop(s) via BUR; 290 minutes. Local airport times.
    • WN3839: SFO 2026-12-08 06:10:00 → BUR 2026-12-08 07:35:00; layover at BUR: 65 minutes.
    • WN2776: BUR 2026-12-08 08:40:00 → DEN 2026-12-08 12:00:00.
  • Southwest Airlines WN1817: DEN 2026-12-22 17:35:00 → SFO 2026-12-22 19:20:00; nonstop; 165 minutes. Local airport times.

2026-12-08 → 2026-12-22 · $335.00

  • United Airlines UA1482 / UA1263: SFO 2026-12-08 11:00:00 → DEN 2026-12-08 16:55:00; 1 stop(s) via ONT; 295 minutes. Local airport times.
    • UA1482: SFO 2026-12-08 11:00:00 → ONT 2026-12-08 12:29:00; layover at ONT: 71 minutes.
    • UA1263: ONT 2026-12-08 13:40:00 → DEN 2026-12-08 16:55:00.
  • United Airlines UA1510: DEN 2026-12-22 17:25:00 → SFO 2026-12-22 19:11:00; nonstop; 166 minutes. Local airport times.

2026-12-08 → 2026-12-22 · $335.00

  • United Airlines UA2115 / UA2187: SFO 2026-12-08 10:38:00 → DEN 2026-12-08 16:33:00; 1 stop(s) via BUR; 295 minutes. Local airport times.
    • UA2115: SFO 2026-12-08 10:38:00 → BUR 2026-12-08 11:58:00; layover at BUR: 64 minutes.
    • UA2187: BUR 2026-12-08 13:02:00 → DEN 2026-12-08 16:33:00.
  • United Airlines UA1510: DEN 2026-12-22 17:25:00 → SFO 2026-12-22 19:11:00; nonstop; 166 minutes. Local airport times.

2026-12-08 → 2026-12-22 · $335.00

  • United Airlines UA1578 / UA1790: SFO 2026-12-08 10:51:00 → DEN 2026-12-08 16:35:00; 1 stop(s) via SBA; 284 minutes. Local airport times.
    • UA1578: SFO 2026-12-08 10:51:00 → SBA 2026-12-08 12:04:00; layover at SBA: 62 minutes.
    • UA1790: SBA 2026-12-08 13:06:00 → DEN 2026-12-08 16:35:00.
  • United Airlines UA1510: DEN 2026-12-22 17:25:00 → SFO 2026-12-22 19:11:00; nonstop; 166 minutes. Local airport times.

2026-12-08 → 2026-12-22 · $335.00

  • United Airlines UA2367 / UA259: SFO 2026-12-08 10:40:00 → DEN 2026-12-08 16:30:00; 1 stop(s) via SBP; 290 minutes. Local airport times.
    • UA2367: SFO 2026-12-08 10:40:00 → SBP 2026-12-08 11:50:00; layover at SBP: 67 minutes.
    • UA259: SBP 2026-12-08 12:57:00 → DEN 2026-12-08 16:30:00.
  • United Airlines UA1510: DEN 2026-12-22 17:25:00 → SFO 2026-12-22 19:11:00; nonstop; 166 minutes. Local airport times.

More dates for this route