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Saint Louis → Denver

Jan 21, 2027 · return Jan 28, 2027

STL → DEN1 adulteconomyRound trip

12 flight options · 4 airlines

Nonstop flights

Thu, Jan 21 – Thu, Jan 28

Frontier Airlines
4:18 pmSTL
2h 30m
Nonstop
5:48 pmDEN
Frontier Airlines
12:23 pmDEN
2h 3m
Nonstop
3:26 pmSTL

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Thu, Jan 28

Southwest Airlines
6:30 pmSTL
2h 25m
Nonstop
7:55 pmDEN
Southwest Airlines
1:30 pmDEN
1h 55m
Nonstop
4:25 pmSTL

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Thu, Jan 28

United Airlines
8:40 amSTL
2h 31m
Nonstop
10:11 amDEN
United Airlines
1:55 pmDEN
2h 2m
Nonstop
4:57 pmSTL

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Thu, Jan 28

Frontier Airlines
11:40 amSTL
2h 32m
Nonstop
1:12 pmDEN
Frontier Airlines
12:21 pmDEN
2h 2m
Nonstop
3:23 pmSTL

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Thu, Jan 28

Southwest Airlines
5:25 pmSTL
2h 30m
Nonstop
6:55 pmDEN
Southwest Airlines
4:55 pmDEN
1h 55m
Nonstop
7:50 pmSTL

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Thu, Jan 28

United Airlines
2:50 pmSTL
2h 31m
Nonstop
4:21 pmDEN
United Airlines
1:55 pmDEN
2h 2m
Nonstop
4:57 pmSTL

Round-trip total · 1 adult · Taxes included

One-stop flights

Thu, Jan 21 – Thu, Jan 28

Delta Air Lines
6:03 amSTL
5h
MSP · 1h 7m
10:03 amDEN
Southwest Airlines
1:30 pmDEN
1h 55m
Nonstop
4:25 pmSTL

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Thu, Jan 28

Southwest Airlines
3:50 pmSTL
6h 5m
DAL · 2h 10m
8:55 pmDEN
Southwest Airlines
1:30 pmDEN
1h 55m
Nonstop
4:25 pmSTL

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Thu, Jan 28

Southwest Airlines
12:40 pmSTL
4h 50m
MCI · 1h 55m
4:30 pmDEN
Southwest Airlines
1:30 pmDEN
1h 55m
Nonstop
4:25 pmSTL

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Thu, Jan 28

Southwest Airlines
10:35 amSTL
5h 30m
BNA · 1h 30m
3:05 pmDEN
Southwest Airlines
1:30 pmDEN
1h 55m
Nonstop
4:25 pmSTL

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Thu, Jan 28

Southwest Airlines
8:20 amSTL
5h
OMA · 2h
12:20 pmDEN
Southwest Airlines
1:30 pmDEN
1h 55m
Nonstop
4:25 pmSTL

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Thu, Jan 28

United Airlines
5:25 amSTL
6h 1m
ORD · 1h 42m
10:26 amDEN
United Airlines
1:55 pmDEN
2h 2m
Nonstop
4:57 pmSTL

Round-trip total · 1 adult · Taxes included

Make this trip yours

STL ⇄ DEN

Economy

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

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More dates

All dates for this routeOct 30, 2026 → Nov 2, 2026Oct 31, 2026 → Nov 7, 2026Nov 13, 2026 → Nov 16, 2026Nov 14, 2026 → Nov 21, 2026Nov 24, 2026 → Nov 29, 2026Nov 27, 2026 → Nov 30, 2026Nov 28, 2026 → Dec 5, 2026Dec 11, 2026 → Dec 14, 2026Dec 12, 2026 → Dec 19, 2026Dec 22, 2026 → Dec 27, 2026Dec 25, 2026 → Dec 28, 2026Dec 26, 2026 → Jan 2, 2027Dec 30, 2026 → Jan 2, 2027Jan 8, 2027 → Jan 11, 2027Jan 9, 2027 → Jan 16, 2027Jan 15, 2027 → Jan 18, 2027Jan 22, 2027 → Jan 25, 2027Jan 23, 2027 → Jan 30, 2027Feb 5, 2027 → Feb 8, 2027Feb 6, 2027 → Feb 13, 2027Feb 12, 2027 → Feb 15, 2027Mar 5, 2027 → Mar 8, 2027Mar 6, 2027 → Mar 13, 2027Mar 25, 2027 → Mar 29, 2027Apr 2, 2027 → Apr 5, 2027Apr 3, 2027 → Apr 10, 2027Apr 30, 2027 → May 3, 2027May 1, 2027 → May 8, 2027May 28, 2027 → May 31, 2027May 29, 2027 → Jun 5, 2027Jun 25, 2027 → Jun 28, 2027Jun 26, 2027 → Jul 3, 2027Jul 2, 2027 → Jul 6, 2027Jul 23, 2027 → Jul 26, 2027Jul 24, 2027 → Jul 31, 2027Aug 20, 2027 → Aug 23, 2027Aug 21, 2027 → Aug 28, 2027Sep 3, 2027 → Sep 6, 2027Sep 17, 2027 → Sep 20, 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)
2027-01-21 → 2027-01-28Frontier AirlinesF94567 / F9630$165.002026-10-29T01:28:26Z
2027-01-21 → 2027-01-28Southwest AirlinesWN4144 / WN2170$280.002026-10-29T01:28:26Z
2027-01-21 → 2027-01-28United AirlinesUA1605 / UA1639$300.002026-10-29T01:28:26Z
2027-01-21 → 2027-01-28Delta Air Lines / Southwest AirlinesDL1597 + DL2849 / WN2170$320.002026-10-29T01:28:26Z
2027-01-21 → 2027-01-28Frontier AirlinesF94567 / F93302$165.002026-10-29T01:28:26Z
2027-01-21 → 2027-01-28Southwest AirlinesWN4144 / WN1843$280.002026-10-29T01:28:26Z
2027-01-21 → 2027-01-28United AirlinesUA2001 / UA1639$300.002026-10-29T01:28:26Z
2027-01-21 → 2027-01-28Southwest AirlinesWN2015 + WN200 / WN2170$290.002026-10-29T01:28:26Z
2027-01-21 → 2027-01-28Southwest AirlinesWN4372 + WN1758 / WN2170$290.002026-10-29T01:28:26Z
2027-01-21 → 2027-01-28Southwest AirlinesWN665 + WN1313 / WN2170$290.002026-10-29T01:28:26Z
2027-01-21 → 2027-01-28Southwest AirlinesWN3286 + WN1766 / WN2170$290.002026-10-29T01:28:26Z
2027-01-21 → 2027-01-28United AirlinesUA4439 + UA2495 / UA1639$310.002026-10-29T01:28:26Z

2027-01-21 → 2027-01-28 · $165.00

  • Frontier Airlines F94567: STL 2027-01-21 16:18:00 → DEN 2027-01-21 17:48:00; nonstop; 150 minutes. Local airport times.
  • Frontier Airlines F9630: DEN 2027-01-28 12:23:00 → STL 2027-01-28 15:26:00; nonstop; 123 minutes. Local airport times.

2027-01-21 → 2027-01-28 · $280.00

  • Southwest Airlines WN4144: STL 2027-01-21 18:30:00 → DEN 2027-01-21 19:55:00; nonstop; 145 minutes. Local airport times.
  • Southwest Airlines WN2170: DEN 2027-01-28 13:30:00 → STL 2027-01-28 16:25:00; nonstop; 115 minutes. Local airport times.

2027-01-21 → 2027-01-28 · $300.00

  • United Airlines UA1605: STL 2027-01-21 08:40:00 → DEN 2027-01-21 10:11:00; nonstop; 151 minutes. Local airport times.
  • United Airlines UA1639: DEN 2027-01-28 13:55:00 → STL 2027-01-28 16:57:00; nonstop; 122 minutes. Local airport times.

2027-01-21 → 2027-01-28 · $320.00

  • Delta Air Lines DL1597 / DL2849: STL 2027-01-21 06:03:00 → DEN 2027-01-21 10:03:00; 1 stop(s) via MSP; 300 minutes. Local airport times.
    • DL1597: STL 2027-01-21 06:03:00 → MSP 2027-01-21 07:43:00; layover at MSP: 67 minutes.
    • DL2849: MSP 2027-01-21 08:50:00 → DEN 2027-01-21 10:03:00.
  • Southwest Airlines WN2170: DEN 2027-01-28 13:30:00 → STL 2027-01-28 16:25:00; nonstop; 115 minutes. Local airport times.

2027-01-21 → 2027-01-28 · $165.00

  • Frontier Airlines F94567: STL 2027-01-21 11:40:00 → DEN 2027-01-21 13:12:00; nonstop; 152 minutes. Local airport times.
  • Frontier Airlines F93302: DEN 2027-01-28 12:21:00 → STL 2027-01-28 15:23:00; nonstop; 122 minutes. Local airport times.

2027-01-21 → 2027-01-28 · $280.00

  • Southwest Airlines WN4144: STL 2027-01-21 17:25:00 → DEN 2027-01-21 18:55:00; nonstop; 150 minutes. Local airport times.
  • Southwest Airlines WN1843: DEN 2027-01-28 16:55:00 → STL 2027-01-28 19:50:00; nonstop; 115 minutes. Local airport times.

2027-01-21 → 2027-01-28 · $300.00

  • United Airlines UA2001: STL 2027-01-21 14:50:00 → DEN 2027-01-21 16:21:00; nonstop; 151 minutes. Local airport times.
  • United Airlines UA1639: DEN 2027-01-28 13:55:00 → STL 2027-01-28 16:57:00; nonstop; 122 minutes. Local airport times.

2027-01-21 → 2027-01-28 · $290.00

  • Southwest Airlines WN2015 / WN200: STL 2027-01-21 15:50:00 → DEN 2027-01-21 20:55:00; 1 stop(s) via DAL; 365 minutes. Local airport times.
    • WN2015: STL 2027-01-21 15:50:00 → DAL 2027-01-21 17:30:00; layover at DAL: 130 minutes.
    • WN200: DAL 2027-01-21 19:40:00 → DEN 2027-01-21 20:55:00.
  • Southwest Airlines WN2170: DEN 2027-01-28 13:30:00 → STL 2027-01-28 16:25:00; nonstop; 115 minutes. Local airport times.

2027-01-21 → 2027-01-28 · $290.00

  • Southwest Airlines WN4372 / WN1758: STL 2027-01-21 12:40:00 → DEN 2027-01-21 16:30:00; 1 stop(s) via MCI; 290 minutes. Local airport times.
    • WN4372: STL 2027-01-21 12:40:00 → MCI 2027-01-21 13:45:00; layover at MCI: 115 minutes.
    • WN1758: MCI 2027-01-21 15:40:00 → DEN 2027-01-21 16:30:00.
  • Southwest Airlines WN2170: DEN 2027-01-28 13:30:00 → STL 2027-01-28 16:25:00; nonstop; 115 minutes. Local airport times.

2027-01-21 → 2027-01-28 · $290.00

  • Southwest Airlines WN665 / WN1313: STL 2027-01-21 10:35:00 → DEN 2027-01-21 15:05:00; 1 stop(s) via BNA; 330 minutes. Local airport times.
    • WN665: STL 2027-01-21 10:35:00 → BNA 2027-01-21 11:40:00; layover at BNA: 90 minutes.
    • WN1313: BNA 2027-01-21 13:10:00 → DEN 2027-01-21 15:05:00.
  • Southwest Airlines WN2170: DEN 2027-01-28 13:30:00 → STL 2027-01-28 16:25:00; nonstop; 115 minutes. Local airport times.

2027-01-21 → 2027-01-28 · $290.00

  • Southwest Airlines WN3286 / WN1766: STL 2027-01-21 08:20:00 → DEN 2027-01-21 12:20:00; 1 stop(s) via OMA; 300 minutes. Local airport times.
    • WN3286: STL 2027-01-21 08:20:00 → OMA 2027-01-21 09:35:00; layover at OMA: 120 minutes.
    • WN1766: OMA 2027-01-21 11:35:00 → DEN 2027-01-21 12:20:00.
  • Southwest Airlines WN2170: DEN 2027-01-28 13:30:00 → STL 2027-01-28 16:25:00; nonstop; 115 minutes. Local airport times.

2027-01-21 → 2027-01-28 · $310.00

  • United Airlines UA4439 / UA2495: STL 2027-01-21 05:25:00 → DEN 2027-01-21 10:26:00; 1 stop(s) via ORD; 361 minutes. Local airport times.
    • UA4439: STL 2027-01-21 05:25:00 → ORD 2027-01-21 06:58:00; layover at ORD: 102 minutes.
    • UA2495: ORD 2027-01-21 08:40:00 → DEN 2027-01-21 10:26:00.
  • United Airlines UA1639: DEN 2027-01-28 13:55:00 → STL 2027-01-28 16:57:00; nonstop; 122 minutes. Local airport times.

More dates for this route