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Denver → Saint Louis

Jan 21, 2027 · return Jan 25, 2027

DEN → STL1 adulteconomyRound trip

12 flight options · 4 airlines

Nonstop flights

Thu, Jan 21 – Mon, Jan 25

Frontier Airlines
12:21 pmDEN
2h 2m
Nonstop
3:23 pmSTL
Frontier Airlines
7:54 pmSTL
2h 31m
Nonstop
9:25 pmDEN

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Mon, Jan 25

Southwest Airlines
10:30 amDEN
2h
Nonstop
1:30 pmSTL
Southwest Airlines
8:20 amSTL
2h 25m
Nonstop
9:45 amDEN

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Mon, Jan 25

United Airlines
9:35 amDEN
2h 3m
Nonstop
12:38 pmSTL
United Airlines
8:40 amSTL
2h 31m
Nonstop
10:11 amDEN

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Mon, Jan 25

Frontier Airlines
8:00 amDEN
2h 4m
Nonstop
11:04 amSTL
Southwest Airlines
8:20 amSTL
2h 25m
Nonstop
9:45 amDEN

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Mon, Jan 25

Southwest Airlines
1:30 pmDEN
1h 55m
Nonstop
4:25 pmSTL
Southwest Airlines
8:20 amSTL
2h 25m
Nonstop
9:45 amDEN

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Mon, Jan 25

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

Round-trip total · 1 adult · Taxes included

One-stop flights

Thu, Jan 21 – Mon, Jan 25

American Airlines
1:15 pmDEN
5h 21m
DFW · 1h 35m
7:36 pmSTL
Southwest Airlines
8:20 amSTL
2h 25m
Nonstop
9:45 amDEN

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Mon, Jan 25

Southwest Airlines
3:40 pmDEN
1h 55m
Nonstop
6:35 pmSTL
Southwest Airlines
10:35 amSTL
5h 30m
BNA · 1h 30m
3:05 pmDEN

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Mon, Jan 25

Southwest Airlines
2:00 pmDEN
4h 10m
MCI · 1h 30m
7:10 pmSTL
Southwest Airlines
8:20 amSTL
2h 25m
Nonstop
9:45 amDEN

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Mon, Jan 25

Southwest Airlines
11:05 amDEN
4h 40m
MSP · 1h 5m
4:45 pmSTL
Southwest Airlines
8:20 amSTL
2h 25m
Nonstop
9:45 amDEN

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Mon, Jan 25

Southwest Airlines
10:40 amDEN
5h 20m
MKE · 1h 45m
5:00 pmSTL
Southwest Airlines
8:20 amSTL
2h 25m
Nonstop
9:45 amDEN

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Mon, Jan 25

Southwest Airlines
6:30 pmDEN
5h 5m
DAL · 1h 20m
12:35 am+1STL
Southwest Airlines
8:20 amSTL
2h 25m
Nonstop
9:45 amDEN

Round-trip total · 1 adult · Taxes included

Make this trip yours

DEN ⇄ STL

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 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)
2027-01-21 → 2027-01-25Frontier AirlinesF93302 / F94567$137.762026-10-29T01:05:09Z
2027-01-21 → 2027-01-25Southwest AirlinesWN719 / WN4141$256.502026-10-29T01:05:09Z
2027-01-21 → 2027-01-25United AirlinesUA652 / UA1605$266.002026-10-29T01:05:09Z
2027-01-21 → 2027-01-25American Airlines / Southwest AirlinesAA2579 + AA2246 / WN4141$268.382026-10-29T01:05:09Z
2027-01-21 → 2027-01-25Frontier Airlines / Southwest AirlinesF93302 / WN4141$197.132026-10-29T01:05:09Z
2027-01-21 → 2027-01-25Southwest AirlinesWN2170 / WN4141$256.502026-10-29T01:05:09Z
2027-01-21 → 2027-01-25United AirlinesUA1639 / UA1605$266.002026-10-29T01:05:09Z
2027-01-21 → 2027-01-25Southwest AirlinesWN2170 / WN665 + WN1313$263.632026-10-29T01:05:09Z
2027-01-21 → 2027-01-25Southwest AirlinesWN2075 + WN2715 / WN4141$263.632026-10-29T01:05:09Z
2027-01-21 → 2027-01-25Southwest AirlinesWN2832 + WN3131 / WN4141$263.632026-10-29T01:05:09Z
2027-01-21 → 2027-01-25Southwest AirlinesWN1706 + WN3113 / WN4141$263.632026-10-29T01:05:09Z
2027-01-21 → 2027-01-25Southwest AirlinesWN235 + WN4472 / WN4141$263.632026-10-29T01:05:09Z

2027-01-21 → 2027-01-25 · $137.76

  • Frontier Airlines F93302: DEN 2027-01-21 12:21:00 → STL 2027-01-21 15:23:00; nonstop; 122 minutes. Local airport times.
  • Frontier Airlines F94567: STL 2027-01-25 19:54:00 → DEN 2027-01-25 21:25:00; nonstop; 151 minutes. Local airport times.

2027-01-21 → 2027-01-25 · $256.50

  • Southwest Airlines WN719: DEN 2027-01-21 10:30:00 → STL 2027-01-21 13:30:00; nonstop; 120 minutes. Local airport times.
  • Southwest Airlines WN4141: STL 2027-01-25 08:20:00 → DEN 2027-01-25 09:45:00; nonstop; 145 minutes. Local airport times.

2027-01-21 → 2027-01-25 · $266.00

  • United Airlines UA652: DEN 2027-01-21 09:35:00 → STL 2027-01-21 12:38:00; nonstop; 123 minutes. Local airport times.
  • United Airlines UA1605: STL 2027-01-25 08:40:00 → DEN 2027-01-25 10:11:00; nonstop; 151 minutes. Local airport times.

2027-01-21 → 2027-01-25 · $268.38

  • American Airlines AA2579 / AA2246: DEN 2027-01-21 13:15:00 → STL 2027-01-21 19:36:00; 1 stop(s) via DFW; 321 minutes. Local airport times.
    • AA2579: DEN 2027-01-21 13:15:00 → DFW 2027-01-21 16:20:00; layover at DFW: 95 minutes.
    • AA2246: DFW 2027-01-21 17:55:00 → STL 2027-01-21 19:36:00.
  • Southwest Airlines WN4141: STL 2027-01-25 08:20:00 → DEN 2027-01-25 09:45:00; nonstop; 145 minutes. Local airport times.

2027-01-21 → 2027-01-25 · $197.13

  • Frontier Airlines F93302: DEN 2027-01-21 08:00:00 → STL 2027-01-21 11:04:00; nonstop; 124 minutes. Local airport times.
  • Southwest Airlines WN4141: STL 2027-01-25 08:20:00 → DEN 2027-01-25 09:45:00; nonstop; 145 minutes. Local airport times.

2027-01-21 → 2027-01-25 · $256.50

  • Southwest Airlines WN2170: DEN 2027-01-21 13:30:00 → STL 2027-01-21 16:25:00; nonstop; 115 minutes. Local airport times.
  • Southwest Airlines WN4141: STL 2027-01-25 08:20:00 → DEN 2027-01-25 09:45:00; nonstop; 145 minutes. Local airport times.

2027-01-21 → 2027-01-25 · $266.00

  • United Airlines UA1639: DEN 2027-01-21 13:55:00 → STL 2027-01-21 16:57:00; nonstop; 122 minutes. Local airport times.
  • United Airlines UA1605: STL 2027-01-25 08:40:00 → DEN 2027-01-25 10:11:00; nonstop; 151 minutes. Local airport times.

2027-01-21 → 2027-01-25 · $263.63

  • Southwest Airlines WN2170: DEN 2027-01-21 15:40:00 → STL 2027-01-21 18:35:00; nonstop; 115 minutes. Local airport times.
  • Southwest Airlines WN665 / WN1313: STL 2027-01-25 10:35:00 → DEN 2027-01-25 15:05:00; 1 stop(s) via BNA; 330 minutes. Local airport times.
    • WN665: STL 2027-01-25 10:35:00 → BNA 2027-01-25 11:40:00; layover at BNA: 90 minutes.
    • WN1313: BNA 2027-01-25 13:10:00 → DEN 2027-01-25 15:05:00.

2027-01-21 → 2027-01-25 · $263.63

  • Southwest Airlines WN2075 / WN2715: DEN 2027-01-21 14:00:00 → STL 2027-01-21 19:10:00; 1 stop(s) via MCI; 250 minutes. Local airport times.
    • WN2075: DEN 2027-01-21 14:00:00 → MCI 2027-01-21 16:35:00; layover at MCI: 90 minutes.
    • WN2715: MCI 2027-01-21 18:05:00 → STL 2027-01-21 19:10:00.
  • Southwest Airlines WN4141: STL 2027-01-25 08:20:00 → DEN 2027-01-25 09:45:00; nonstop; 145 minutes. Local airport times.

2027-01-21 → 2027-01-25 · $263.63

  • Southwest Airlines WN2832 / WN3131: DEN 2027-01-21 11:05:00 → STL 2027-01-21 16:45:00; 1 stop(s) via MSP; 280 minutes. Local airport times.
    • WN2832: DEN 2027-01-21 11:05:00 → MSP 2027-01-21 14:05:00; layover at MSP: 65 minutes.
    • WN3131: MSP 2027-01-21 15:10:00 → STL 2027-01-21 16:45:00.
  • Southwest Airlines WN4141: STL 2027-01-25 08:20:00 → DEN 2027-01-25 09:45:00; nonstop; 145 minutes. Local airport times.

2027-01-21 → 2027-01-25 · $263.63

  • Southwest Airlines WN1706 / WN3113: DEN 2027-01-21 10:40:00 → STL 2027-01-21 17:00:00; 1 stop(s) via MKE; 320 minutes. Local airport times.
    • WN1706: DEN 2027-01-21 10:40:00 → MKE 2027-01-21 13:55:00; layover at MKE: 105 minutes.
    • WN3113: MKE 2027-01-21 15:40:00 → STL 2027-01-21 17:00:00.
  • Southwest Airlines WN4141: STL 2027-01-25 08:20:00 → DEN 2027-01-25 09:45:00; nonstop; 145 minutes. Local airport times.

2027-01-21 → 2027-01-25 · $263.63

  • Southwest Airlines WN235 / WN4472: DEN 2027-01-21 18:30:00 → STL 2027-01-22 00:35:00; 1 stop(s) via DAL; 305 minutes. Local airport times.
    • WN235: DEN 2027-01-21 18:30:00 → DAL 2027-01-21 21:30:00; layover at DAL: 80 minutes.
    • WN4472: DAL 2027-01-21 22:50:00 → STL 2027-01-22 00:35:00.
  • Southwest Airlines WN4141: STL 2027-01-25 08:20:00 → DEN 2027-01-25 09:45:00; nonstop; 145 minutes. Local airport times.

More dates for this route