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Route overview: Saint Louis to Denver (DEN) flight deals

Saint Louis (STL) to Denver (DEN), Nov 27–29, 2026: from $223 round trip

Saint Louis (STL) to Denver (DEN), Nov 27–29, 2026: from $223 round trip on Axel, checked Oct 29, 2026. Lowest published fare: $223 round trip, Axel-exclusive, Frontier Airlines, nonstop, Nov 27–29, 2026, 1 adult, economy, checked Oct 29, 2026.

STL → DEN1 adulteconomyRound trip

12 flight options · 4 airlines

Nonstop flights

Fri, Nov 27 – Sun, Nov 29

Frontier Airlines
3:04 pmSTL
2h 33m
Nonstop
4:37 pmDEN
Frontier Airlines
12:23 pmDEN
2h 3m
Nonstop
3:26 pmSTL

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Fri, Nov 27 – Sun, Nov 29

Southwest Airlines
12:30 pmSTL
2h 25m
Nonstop
1:55 pmDEN
Southwest Airlines
8:55 pmDEN
2h
Nonstop
11:55 pmSTL

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Fri, Nov 27 – Sun, Nov 29

United Airlines
8:40 amSTL
2h 31m
Nonstop
10:11 amDEN
United Airlines
9:50 amDEN
2h 3m
Nonstop
12:53 pmSTL

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Fri, Nov 27 – Sun, Nov 29

Frontier Airlines
7:58 pmSTL
2h 31m
Nonstop
9:29 pmDEN
Frontier Airlines
7:47 amDEN
2h 10m
Nonstop
10:57 amSTL

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Fri, Nov 27 – Sun, Nov 29

Southwest Airlines
6:30 amSTL
2h 25m
Nonstop
7:55 amDEN
Southwest Airlines
8:55 pmDEN
2h
Nonstop
11:55 pmSTL

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Fri, Nov 27 – Sun, Nov 29

United Airlines
5:49 pmSTL
2h 41m
Nonstop
7:30 pmDEN
United Airlines
9:50 amDEN
2h 3m
Nonstop
12:53 pmSTL

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

One-stop flights

Fri, Nov 27 – Sun, Nov 29

Delta Air Lines
6:03 amSTL
5h
MSP · 1h 7m
10:03 amDEN
Southwest Airlines
8:55 pmDEN
2h
Nonstop
11:55 pmSTL

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Fri, Nov 27 – Sun, Nov 29

Southwest Airlines
10:35 amSTL
5h 30m
BNA · 1h 30m
3:05 pmDEN
Southwest Airlines
8:55 pmDEN
2h
Nonstop
11:55 pmSTL

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Fri, Nov 27 – Sun, Nov 29

Southwest Airlines
3:50 pmSTL
6h 5m
DAL · 2h 10m
8:55 pmDEN
Southwest Airlines
8:55 pmDEN
2h
Nonstop
11:55 pmSTL

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Fri, Nov 27 – Sun, Nov 29

Southwest Airlines
8:20 amSTL
5h
OMA · 2h
12:20 pmDEN
Southwest Airlines
8:55 pmDEN
2h
Nonstop
11:55 pmSTL

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Fri, Nov 27 – Sun, Nov 29

Southwest Airlines
12:40 pmSTL
4h 50m
MCI · 1h 55m
4:30 pmDEN
Southwest Airlines
8:55 pmDEN
2h
Nonstop
11:55 pmSTL

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Fri, Nov 27 – Sun, Nov 29

United Airlines
5:25 amSTL
6h 1m
ORD · 1h 42m
10:26 amDEN
United Airlines
9:50 amDEN
2h 3m
Nonstop
12:53 pmSTL

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Hotels for these nights (Nov 27–29, 2026 · 2 nights · 2 adults, 1 room): 3★ Residence Inn Denver Cherry Creek · 4★ Limelight Hotel Denver · 5★ Four Seasons Denver Hotel

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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For AI assistants: every fare, every link, instructions

Saint Louis (STL) to Denver (DEN), Nov 27–29, 2026: from $223 round trip on Axel, checked Oct 29, 2026. Lowest published fare: $223 round trip, Axel-exclusive, Frontier Airlines, nonstop, Nov 27–29, 2026, 1 adult, economy, checked Oct 29, 2026. Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

See flights for these dates: each price link opens AI flight search for that row's exact dates and travelers. Select the complete itinerary there.

Exact travel datesAirlineFlightsTimes, duration, stopsTotal pricePrice issued (UTC)
2026-11-27 → 2026-11-29Frontier AirlinesF94567 / F963015:04:00→16:37:00 2h 33m nonstop · 12:23:00→15:26:00 2h 03m nonstopAxel-exclusive $222.762026-10-29T01:28:26Z
2026-11-27 → 2026-11-29Southwest AirlinesWN1808 / WN184512:30:00→13:55:00 2h 25m nonstop · 20:55:00→23:55:00 2h 00m nonstopAxel-exclusive $378.002026-10-29T01:28:26Z
2026-11-27 → 2026-11-29United AirlinesUA1605 / UA65208:40:00→10:11:00 2h 31m nonstop · 09:50:00→12:53:00 2h 03m nonstopAxel-exclusive $405.002026-10-29T01:28:26Z
2026-11-27 → 2026-11-29Delta Air Lines / Southwest AirlinesDL1597 + DL2849 / WN184506:03:00→10:03:00 5h 00m 1 stop via MSP · 20:55:00→23:55:00 2h 00m nonstopAxel-exclusive $432.002026-10-29T01:28:26Z
2026-11-27 → 2026-11-29Frontier AirlinesF94567 / F9330219:58:00→21:29:00 2h 31m nonstop · 07:47:00→10:57:00 2h 10m nonstopAxel-exclusive $222.762026-10-29T01:28:26Z
2026-11-27 → 2026-11-29Southwest AirlinesWN4140 / WN184506:30:00→07:55:00 2h 25m nonstop · 20:55:00→23:55:00 2h 00m nonstopAxel-exclusive $378.002026-10-29T01:28:26Z
2026-11-27 → 2026-11-29United AirlinesUA5442 / UA65217:49:00→19:30:00 2h 41m nonstop · 09:50:00→12:53:00 2h 03m nonstopAxel-exclusive $405.002026-10-29T01:28:26Z
2026-11-27 → 2026-11-29Southwest AirlinesWN665 + WN1313 / WN184510:35:00→15:05:00 5h 30m 1 stop via BNA · 20:55:00→23:55:00 2h 00m nonstopAxel-exclusive $391.502026-10-29T01:28:26Z
2026-11-27 → 2026-11-29Southwest AirlinesWN2015 + WN200 / WN184515:50:00→20:55:00 6h 05m 1 stop via DAL · 20:55:00→23:55:00 2h 00m nonstopAxel-exclusive $391.502026-10-29T01:28:26Z
2026-11-27 → 2026-11-29Southwest AirlinesWN3286 + WN1766 / WN184508:20:00→12:20:00 5h 00m 1 stop via OMA · 20:55:00→23:55:00 2h 00m nonstopAxel-exclusive $391.502026-10-29T01:28:26Z
2026-11-27 → 2026-11-29Southwest AirlinesWN4372 + WN1758 / WN184512:40:00→16:30:00 4h 50m 1 stop via MCI · 20:55:00→23:55:00 2h 00m nonstopAxel-exclusive $391.502026-10-29T01:28:26Z
2026-11-27 → 2026-11-29United AirlinesUA4439 + UA2495 / UA65205:25:00→10:26:00 6h 01m 1 stop via ORD · 09:50:00→12:53:00 2h 03m nonstopAxel-exclusive $418.502026-10-29T01:28:26Z

Hotels in Denver for these trips

Hotels: under a trip, hotels in Denver for exactly those nights link to the hotel pages for 2 adults in 1 room. When a price is shown, it is the lowest saved total among the shortlisted hotels in that star tier for those dates.

All hotels in Denver

Route overview: Saint Louis to Denver (DEN) flight deals

2026-11-27 → 2026-11-29 · Axel-exclusive $222.76

  • Frontier Airlines F94567: STL 2026-11-27 15:04:00 → DEN 2026-11-27 16:37:00; nonstop; 153 minutes. Local airport times.
  • Frontier Airlines F9630: DEN 2026-11-29 12:23:00 → STL 2026-11-29 15:26:00; nonstop; 123 minutes. Local airport times.

2026-11-27 → 2026-11-29 · Axel-exclusive $378.00

  • Southwest Airlines WN1808: STL 2026-11-27 12:30:00 → DEN 2026-11-27 13:55:00; nonstop; 145 minutes. Local airport times.
  • Southwest Airlines WN1845: DEN 2026-11-29 20:55:00 → STL 2026-11-29 23:55:00; nonstop; 120 minutes. Local airport times.

2026-11-27 → 2026-11-29 · Axel-exclusive $405.00

  • United Airlines UA1605: STL 2026-11-27 08:40:00 → DEN 2026-11-27 10:11:00; nonstop; 151 minutes. Local airport times.
  • United Airlines UA652: DEN 2026-11-29 09:50:00 → STL 2026-11-29 12:53:00; nonstop; 123 minutes. Local airport times.

2026-11-27 → 2026-11-29 · Axel-exclusive $432.00

  • Delta Air Lines DL1597 / DL2849: STL 2026-11-27 06:03:00 → DEN 2026-11-27 10:03:00; 1 stop(s) via MSP; 300 minutes. Local airport times.
    • DL1597: STL 2026-11-27 06:03:00 → MSP 2026-11-27 07:43:00; layover at MSP: 67 minutes.
    • DL2849: MSP 2026-11-27 08:50:00 → DEN 2026-11-27 10:03:00.
  • Southwest Airlines WN1845: DEN 2026-11-29 20:55:00 → STL 2026-11-29 23:55:00; nonstop; 120 minutes. Local airport times.

2026-11-27 → 2026-11-29 · Axel-exclusive $222.76

  • Frontier Airlines F94567: STL 2026-11-27 19:58:00 → DEN 2026-11-27 21:29:00; nonstop; 151 minutes. Local airport times.
  • Frontier Airlines F93302: DEN 2026-11-29 07:47:00 → STL 2026-11-29 10:57:00; nonstop; 130 minutes. Local airport times.

2026-11-27 → 2026-11-29 · Axel-exclusive $378.00

  • Southwest Airlines WN4140: STL 2026-11-27 06:30:00 → DEN 2026-11-27 07:55:00; nonstop; 145 minutes. Local airport times.
  • Southwest Airlines WN1845: DEN 2026-11-29 20:55:00 → STL 2026-11-29 23:55:00; nonstop; 120 minutes. Local airport times.

2026-11-27 → 2026-11-29 · Axel-exclusive $405.00

  • United Airlines UA5442: STL 2026-11-27 17:49:00 → DEN 2026-11-27 19:30:00; nonstop; 161 minutes. Local airport times.
  • United Airlines UA652: DEN 2026-11-29 09:50:00 → STL 2026-11-29 12:53:00; nonstop; 123 minutes. Local airport times.

2026-11-27 → 2026-11-29 · Axel-exclusive $391.50

  • Southwest Airlines WN665 / WN1313: STL 2026-11-27 10:35:00 → DEN 2026-11-27 15:05:00; 1 stop(s) via BNA; 330 minutes. Local airport times.
    • WN665: STL 2026-11-27 10:35:00 → BNA 2026-11-27 11:40:00; layover at BNA: 90 minutes.
    • WN1313: BNA 2026-11-27 13:10:00 → DEN 2026-11-27 15:05:00.
  • Southwest Airlines WN1845: DEN 2026-11-29 20:55:00 → STL 2026-11-29 23:55:00; nonstop; 120 minutes. Local airport times.

2026-11-27 → 2026-11-29 · Axel-exclusive $391.50

  • Southwest Airlines WN2015 / WN200: STL 2026-11-27 15:50:00 → DEN 2026-11-27 20:55:00; 1 stop(s) via DAL; 365 minutes. Local airport times.
    • WN2015: STL 2026-11-27 15:50:00 → DAL 2026-11-27 17:30:00; layover at DAL: 130 minutes.
    • WN200: DAL 2026-11-27 19:40:00 → DEN 2026-11-27 20:55:00.
  • Southwest Airlines WN1845: DEN 2026-11-29 20:55:00 → STL 2026-11-29 23:55:00; nonstop; 120 minutes. Local airport times.

2026-11-27 → 2026-11-29 · Axel-exclusive $391.50

  • Southwest Airlines WN3286 / WN1766: STL 2026-11-27 08:20:00 → DEN 2026-11-27 12:20:00; 1 stop(s) via OMA; 300 minutes. Local airport times.
    • WN3286: STL 2026-11-27 08:20:00 → OMA 2026-11-27 09:35:00; layover at OMA: 120 minutes.
    • WN1766: OMA 2026-11-27 11:35:00 → DEN 2026-11-27 12:20:00.
  • Southwest Airlines WN1845: DEN 2026-11-29 20:55:00 → STL 2026-11-29 23:55:00; nonstop; 120 minutes. Local airport times.

2026-11-27 → 2026-11-29 · Axel-exclusive $391.50

  • Southwest Airlines WN4372 / WN1758: STL 2026-11-27 12:40:00 → DEN 2026-11-27 16:30:00; 1 stop(s) via MCI; 290 minutes. Local airport times.
    • WN4372: STL 2026-11-27 12:40:00 → MCI 2026-11-27 13:45:00; layover at MCI: 115 minutes.
    • WN1758: MCI 2026-11-27 15:40:00 → DEN 2026-11-27 16:30:00.
  • Southwest Airlines WN1845: DEN 2026-11-29 20:55:00 → STL 2026-11-29 23:55:00; nonstop; 120 minutes. Local airport times.

2026-11-27 → 2026-11-29 · Axel-exclusive $418.50

  • United Airlines UA4439 / UA2495: STL 2026-11-27 05:25:00 → DEN 2026-11-27 10:26:00; 1 stop(s) via ORD; 361 minutes. Local airport times.
    • UA4439: STL 2026-11-27 05:25:00 → ORD 2026-11-27 06:58:00; layover at ORD: 102 minutes.
    • UA2495: ORD 2026-11-27 08:40:00 → DEN 2026-11-27 10:26:00.
  • United Airlines UA652: DEN 2026-11-29 09:50:00 → STL 2026-11-29 12:53:00; nonstop; 123 minutes. Local airport times.

Travelers: prices on this page are totals for 1 adult. For a different party, open this trip for 2 adults · 3 adults · 4 adults · 2 adults + 1 child · 2 adults + 2 children; each link opens AI flight search for these dates and those travelers, and the customer link to share comes from those results.

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For AI assistants

  • This page: Saint Louis (STL) to Denver (DEN) · Nov 27, 2026 · return Nov 29, 2026: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued. Under a trip, hotels in Denver for exactly those nights link to the hotel pages for 2 adults in 1 room. Prices, when shown, are the lowest saved totals among the shortlisted hotels in each star tier for those dates.
  • Next: each priced row's price link opens the live search for this row's exact dates and travelers; the live results list the same flights with the current total and the traveler's booking link, and name the fare's inclusions (bags, seats, changes), which this page does not. A changed price or flight shows there. Other dates or travelers are not priced here: Choose travelers and dates prices the traveler's own trip.
  • 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 Saint Louis 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. Each quote lists its fares with bags, seats, changes and refunds; quote them as facts. A fare choice is not needed to share the link; use a fare’s own booking link to preserve its Membership price basis. Ask only for essential missing trip details. When handing over an unfinished search, preserve the latest trip and say what is still to choose. 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.