Travel with Axel,
get the best price.

Route overview: Denver to San Antonio (SAT) flight deals

Denver → San Antonio

Dec 27, 2026 · return Jan 2, 2027

DEN → SAT1 adulteconomyRound trip

12 flight options · 4 airlines

Nonstop flights

Sun, Dec 27 – Sat, Jan 2

Frontier Airlines
9:14 amDEN
2h 22m
Nonstop
12:36 pmSAT
Frontier Airlines
8:28 pmSAT
2h 29m
Nonstop
9:57 pmDEN

Round-trip total · 1 adult · Taxes included

Sun, Dec 27 – Sat, Jan 2

Southwest Airlines
10:35 amDEN
2h 10m
Nonstop
1:45 pmSAT
Southwest Airlines
1:25 pmSAT
2h 15m
Nonstop
2:40 pmDEN

Round-trip total · 1 adult · Taxes included

Sun, Dec 27 – Sat, Jan 2

United Airlines
5:25 pmDEN
2h 9m
Nonstop
8:34 pmSAT
United Airlines
1:52 pmSAT
2h 19m
Nonstop
3:11 pmDEN

Round-trip total · 1 adult · Taxes included

Sun, Dec 27 – Sat, Jan 2

Frontier Airlines
4:25 pmDEN
2h 10m
Nonstop
7:35 pmSAT
Frontier Airlines
8:30 pmSAT
2h 23m
Nonstop
9:53 pmDEN

Round-trip total · 1 adult · Taxes included

Sun, Dec 27 – Sat, Jan 2

Southwest Airlines
12:25 pmDEN
2h 10m
Nonstop
3:35 pmSAT
Southwest Airlines
9:40 amSAT
2h 15m
Nonstop
10:55 amDEN

Round-trip total · 1 adult · Taxes included

Sun, Dec 27 – Sat, Jan 2

United Airlines
9:35 amDEN
2h 11m
Nonstop
12:46 pmSAT
United Airlines
1:52 pmSAT
2h 19m
Nonstop
3:11 pmDEN

Round-trip total · 1 adult · Taxes included

One-stop flights

Sun, Dec 27 – Sat, Jan 2

American Airlines
9:12 amDEN
4h 38m
DFW · 1h 22m
2:50 pmSAT
American Airlines
6:00 amSAT
4h 49m
DFW · 1h 7m
9:49 amDEN

Round-trip total · 1 adult · Taxes included

Sun, Dec 27 – Sat, Jan 2

Southwest Airlines
5:35 amDEN
6h 40m
DAL · 3h 40m
1:15 pmSAT
Southwest Airlines
9:40 amSAT
2h 15m
Nonstop
10:55 amDEN

Round-trip total · 1 adult · Taxes included

Sun, Dec 27 – Sat, Jan 2

Southwest Airlines
4:40 pmDEN
5h 50m
HOU · 2h 30m
11:30 pmSAT
Southwest Airlines
9:40 amSAT
2h 15m
Nonstop
10:55 amDEN

Round-trip total · 1 adult · Taxes included

Sun, Dec 27 – Sat, Jan 2

Southwest Airlines
11:25 amDEN
5h 35m
MCI · 1h 50m
6:00 pmSAT
Southwest Airlines
9:40 amSAT
2h 15m
Nonstop
10:55 amDEN

Round-trip total · 1 adult · Taxes included

Sun, Dec 27 – Sat, Jan 2

Southwest Airlines
8:50 amDEN
6h 40m
ELP · 3h 25m
4:30 pmSAT
Southwest Airlines
9:40 amSAT
2h 15m
Nonstop
10:55 amDEN

Round-trip total · 1 adult · Taxes included

Sun, Dec 27 – Sat, Jan 2

United Airlines
5:00 amDEN
7h 6m
IAH · 3h 22m
1:06 pmSAT
United Airlines
1:52 pmSAT
2h 19m
Nonstop
3:11 pmDEN

Round-trip total · 1 adult · Taxes included

Make this trip yours

DEN ⇄ SAT

Economy

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

No account needed to see prices.

Already have an account? Log in

Why book with Axel
  • A real airline bookingThe booking is in the airline’s own system under your name. After you book, Frontier Airlines emails you its confirmation code and e-ticket, usually within 15 minutes and occasionally up to a couple of hours while the booking is processed.
  • Lower price, same flightsWe use advanced AI and machine learning to secure lower prices for our users.
  • Not satisfied? Full refund.If you are unhappy with the experience for any reason, or simply change your mind, cancel within 24 hours of booking (departure 7+ days away) and we refund you in full. We stand by our product. Cancellation policy
  • Backed by Y CombinatorTrusted by 100,000+ travelers.

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

Explore this route

All dates for this routeDec 26, 2026 → Jan 1, 2027Dec 28, 2026 → Jan 3, 2027
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.

Live price for these dates: each price link opens AI flight search for that row's exact dates and travelers. Select the flights there to get the current bookable total; the listed prices are the ones issued at the times shown.

Route overview: Denver to San Antonio (SAT) flight deals

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2026-12-27 → 2027-01-02Frontier AirlinesF92356 / F93707$182.002026-10-29T01:05:09Z
2026-12-27 → 2027-01-02Southwest AirlinesWN123 / WN3710$325.002026-10-29T01:05:09Z
2026-12-27 → 2027-01-02United AirlinesUA2819 / UA1007$351.002026-10-29T01:05:09Z
2026-12-27 → 2027-01-02American AirlinesAA1523 + AA1961 / AA2342 + AA2357$377.002026-10-29T01:05:09Z
2026-12-27 → 2027-01-02Frontier AirlinesF92356 / F92355$182.002026-10-29T01:05:09Z
2026-12-27 → 2027-01-02Southwest AirlinesWN123 / WN3771$325.002026-10-29T01:05:09Z
2026-12-27 → 2027-01-02United AirlinesUA1521 / UA1007$351.002026-10-29T01:05:09Z
2026-12-27 → 2027-01-02Southwest AirlinesWN1749 + WN1165 / WN3771$331.502026-10-29T01:05:09Z
2026-12-27 → 2027-01-02Southwest AirlinesWN2433 + WN4470 / WN3771$331.502026-10-29T01:05:09Z
2026-12-27 → 2027-01-02Southwest AirlinesWN1369 + WN802 / WN3771$331.502026-10-29T01:05:09Z
2026-12-27 → 2027-01-02Southwest AirlinesWN1934 + WN1916 / WN3771$331.502026-10-29T01:05:09Z
2026-12-27 → 2027-01-02United AirlinesUA320 + UA468 / UA1007$357.502026-10-29T01:05:09Z

2026-12-27 → 2027-01-02 · $182.00

  • Frontier Airlines F92356: DEN 2026-12-27 09:14:00 → SAT 2026-12-27 12:36:00; nonstop; 142 minutes. Local airport times.
  • Frontier Airlines F93707: SAT 2027-01-02 20:28:00 → DEN 2027-01-02 21:57:00; nonstop; 149 minutes. Local airport times.

2026-12-27 → 2027-01-02 · $325.00

  • Southwest Airlines WN123: DEN 2026-12-27 10:35:00 → SAT 2026-12-27 13:45:00; nonstop; 130 minutes. Local airport times.
  • Southwest Airlines WN3710: SAT 2027-01-02 13:25:00 → DEN 2027-01-02 14:40:00; nonstop; 135 minutes. Local airport times.

2026-12-27 → 2027-01-02 · $351.00

  • United Airlines UA2819: DEN 2026-12-27 17:25:00 → SAT 2026-12-27 20:34:00; nonstop; 129 minutes. Local airport times.
  • United Airlines UA1007: SAT 2027-01-02 13:52:00 → DEN 2027-01-02 15:11:00; nonstop; 139 minutes. Local airport times.

2026-12-27 → 2027-01-02 · $377.00

  • American Airlines AA1523 / AA1961: DEN 2026-12-27 09:12:00 → SAT 2026-12-27 14:50:00; 1 stop(s) via DFW; 278 minutes. Local airport times.
    • AA1523: DEN 2026-12-27 09:12:00 → DFW 2026-12-27 12:18:00; layover at DFW: 82 minutes.
    • AA1961: DFW 2026-12-27 13:40:00 → SAT 2026-12-27 14:50:00.
  • American Airlines AA2342 / AA2357: SAT 2027-01-02 06:00:00 → DEN 2027-01-02 09:49:00; 1 stop(s) via DFW; 289 minutes. Local airport times.
    • AA2342: SAT 2027-01-02 06:00:00 → DFW 2027-01-02 07:27:00; layover at DFW: 67 minutes.
    • AA2357: DFW 2027-01-02 08:34:00 → DEN 2027-01-02 09:49:00.

2026-12-27 → 2027-01-02 · $182.00

  • Frontier Airlines F92356: DEN 2026-12-27 16:25:00 → SAT 2026-12-27 19:35:00; nonstop; 130 minutes. Local airport times.
  • Frontier Airlines F92355: SAT 2027-01-02 20:30:00 → DEN 2027-01-02 21:53:00; nonstop; 143 minutes. Local airport times.

2026-12-27 → 2027-01-02 · $325.00

  • Southwest Airlines WN123: DEN 2026-12-27 12:25:00 → SAT 2026-12-27 15:35:00; nonstop; 130 minutes. Local airport times.
  • Southwest Airlines WN3771: SAT 2027-01-02 09:40:00 → DEN 2027-01-02 10:55:00; nonstop; 135 minutes. Local airport times.

2026-12-27 → 2027-01-02 · $351.00

  • United Airlines UA1521: DEN 2026-12-27 09:35:00 → SAT 2026-12-27 12:46:00; nonstop; 131 minutes. Local airport times.
  • United Airlines UA1007: SAT 2027-01-02 13:52:00 → DEN 2027-01-02 15:11:00; nonstop; 139 minutes. Local airport times.

2026-12-27 → 2027-01-02 · $331.50

  • Southwest Airlines WN1749 / WN1165: DEN 2026-12-27 05:35:00 → SAT 2026-12-27 13:15:00; 1 stop(s) via DAL; 400 minutes. Local airport times.
    • WN1749: DEN 2026-12-27 05:35:00 → DAL 2026-12-27 08:35:00; layover at DAL: 220 minutes.
    • WN1165: DAL 2026-12-27 12:15:00 → SAT 2026-12-27 13:15:00.
  • Southwest Airlines WN3771: SAT 2027-01-02 09:40:00 → DEN 2027-01-02 10:55:00; nonstop; 135 minutes. Local airport times.

2026-12-27 → 2027-01-02 · $331.50

  • Southwest Airlines WN2433 / WN4470: DEN 2026-12-27 16:40:00 → SAT 2026-12-27 23:30:00; 1 stop(s) via HOU; 350 minutes. Local airport times.
    • WN2433: DEN 2026-12-27 16:40:00 → HOU 2026-12-27 19:55:00; layover at HOU: 150 minutes.
    • WN4470: HOU 2026-12-27 22:25:00 → SAT 2026-12-27 23:30:00.
  • Southwest Airlines WN3771: SAT 2027-01-02 09:40:00 → DEN 2027-01-02 10:55:00; nonstop; 135 minutes. Local airport times.

2026-12-27 → 2027-01-02 · $331.50

  • Southwest Airlines WN1369 / WN802: DEN 2026-12-27 11:25:00 → SAT 2026-12-27 18:00:00; 1 stop(s) via MCI; 335 minutes. Local airport times.
    • WN1369: DEN 2026-12-27 11:25:00 → MCI 2026-12-27 14:05:00; layover at MCI: 110 minutes.
    • WN802: MCI 2026-12-27 15:55:00 → SAT 2026-12-27 18:00:00.
  • Southwest Airlines WN3771: SAT 2027-01-02 09:40:00 → DEN 2027-01-02 10:55:00; nonstop; 135 minutes. Local airport times.

2026-12-27 → 2027-01-02 · $331.50

  • Southwest Airlines WN1934 / WN1916: DEN 2026-12-27 08:50:00 → SAT 2026-12-27 16:30:00; 1 stop(s) via ELP; 400 minutes. Local airport times.
    • WN1934: DEN 2026-12-27 08:50:00 → ELP 2026-12-27 10:40:00; layover at ELP: 205 minutes.
    • WN1916: ELP 2026-12-27 14:05:00 → SAT 2026-12-27 16:30:00.
  • Southwest Airlines WN3771: SAT 2027-01-02 09:40:00 → DEN 2027-01-02 10:55:00; nonstop; 135 minutes. Local airport times.

2026-12-27 → 2027-01-02 · $357.50

  • United Airlines UA320 / UA468: DEN 2026-12-27 05:00:00 → SAT 2026-12-27 13:06:00; 1 stop(s) via IAH; 426 minutes. Local airport times.
    • UA320: DEN 2026-12-27 05:00:00 → IAH 2026-12-27 08:33:00; layover at IAH: 202 minutes.
    • UA468: IAH 2026-12-27 11:55:00 → SAT 2026-12-27 13:06:00.
  • United Airlines UA1007: SAT 2027-01-02 13:52:00 → DEN 2027-01-02 15:11:00; nonstop; 139 minutes. Local airport times.

Explore this route

For AI assistants

  • This page: Denver (DEN) to San Antonio (SAT) · Dec 27, 2026 · return Jan 2, 2027: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued.
  • Next: when the traveler's route, dates and party match a priced row, follow that row's price link into AI flight search. Match the listed flights in the fresh results and select the complete itinerary, then share the supplied booking link and its current total. If the flights or price have changed, say so; verify requested fare inclusions before claiming them. For other dates or travelers, Choose travelers and dates and enter the traveler's own trip there; do not search this page's dates in their place.
  • 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 Denver to San Antonio (SAT) 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. Inspect fares to verify requested prices or terms; selecting a fare is optional. Use that fare’s booking link to preserve its Membership price basis. State anything unverified. Ask only for essential missing trip details. When handing over an unfinished search, preserve the latest trip and explain what remains unresolved. Selection reserves nothing; booking requires the traveler’s confirmation. 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.