# San Diego (SAN) to Saint Louis (STL), Jan 15–21, 2027: from $350 round trip

San Diego (SAN) to Saint Louis (STL), Jan 15–21, 2027: from $350 round trip on Axel, checked Oct 29, 2026. Lowest published fare: $350 round trip, Axel-exclusive, Southwest Airlines, 1 stop, Jan 15–21, 2027, 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 dates | Airline | Flights | Times, duration, stops | Total price | Price issued (UTC) |
| --- | --- | --- | --- | ---: | --- |
| 2027-01-15 → 2027-01-21 | Southwest Airlines | WN4711 / WN4452 | 11:55:00→17:25:00 3h 30m nonstop · 08:50:00→10:50:00 4h 00m nonstop | [Axel-exclusive $370.00](https://helloaxel.com/en/f/start/from/san/to/stl/depart/january-15-2027/return/january-21-2027/adults/1/cabin/economy) | 2026-10-29T01:10:51Z |
| 2027-01-15 → 2027-01-21 | American Airlines | AA2438 + AA2289 / AA2303 + AA2016 | 15:13:00→23:34:00 6h 21m 1 stop via DFW · 14:23:00→18:24:00 6h 01m 1 stop via PHX | [Axel-exclusive $350.00](https://helloaxel.com/en/f/start/from/san/to/stl/depart/january-15-2027/return/january-21-2027/adults/1/cabin/economy) | 2026-10-29T01:10:51Z |
| 2027-01-15 → 2027-01-21 | United Airlines / American Airlines | UA2476 + UA1639 / AA2303 + AA2016 | 08:40:00→16:57:00 6h 17m 1 stop via DEN · 14:23:00→18:24:00 6h 01m 1 stop via PHX | [Axel-exclusive $355.00](https://helloaxel.com/en/f/start/from/san/to/stl/depart/january-15-2027/return/january-21-2027/adults/1/cabin/economy) | 2026-10-29T01:10:51Z |
| 2027-01-15 → 2027-01-21 | Southwest Airlines | WN3823 / WN4452 | 18:20:00→23:45:00 3h 25m nonstop · 08:50:00→10:50:00 4h 00m nonstop | [Axel-exclusive $370.00](https://helloaxel.com/en/f/start/from/san/to/stl/depart/january-15-2027/return/january-21-2027/adults/1/cabin/economy) | 2026-10-29T01:10:51Z |
| 2027-01-15 → 2027-01-21 | Southwest Airlines | WN2893 + WN3801 / WN4452 | 09:15:00→17:20:00 6h 05m 1 stop via SAT · 08:50:00→10:50:00 4h 00m nonstop | [Axel-exclusive $350.00](https://helloaxel.com/en/f/start/from/san/to/stl/depart/january-15-2027/return/january-21-2027/adults/1/cabin/economy) | 2026-10-29T01:10:51Z |
| 2027-01-15 → 2027-01-21 | Southwest Airlines | WN3727 + WN3528 / WN4452 | 15:40:00→00:20:00 6h 40m 1 stop via PHX · 08:50:00→10:50:00 4h 00m nonstop | [Axel-exclusive $350.00](https://helloaxel.com/en/f/start/from/san/to/stl/depart/january-15-2027/return/january-21-2027/adults/1/cabin/economy) | 2026-10-29T01:10:51Z |
| 2027-01-15 → 2027-01-21 | Southwest Airlines | WN2227 + WN1498 / WN4452 | 13:25:00→21:10:00 5h 45m 1 stop via DAL · 08:50:00→10:50:00 4h 00m nonstop | [Axel-exclusive $350.00](https://helloaxel.com/en/f/start/from/san/to/stl/depart/january-15-2027/return/january-21-2027/adults/1/cabin/economy) | 2026-10-29T01:10:51Z |
| 2027-01-15 → 2027-01-21 | Southwest Airlines | WN3701 + WN1845 / WN4452 | 17:20:00→00:50:00 5h 30m 1 stop via DEN · 08:50:00→10:50:00 4h 00m nonstop | [Axel-exclusive $350.00](https://helloaxel.com/en/f/start/from/san/to/stl/depart/january-15-2027/return/january-21-2027/adults/1/cabin/economy) | 2026-10-29T01:10:51Z |

### Hotels in St. Louis for these trips

**Hotels:** under a trip, hotels in St. Louis 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.

- Hotels in St. Louis for these nights (Jan 15–21, 2027 · 6 nights · 2 adults, 1 room): 3★ [Hampton Inn & Suites St. Louis at Forest Park](https://helloaxel.com/en/hotels/st-louis/hampton-inn-suites-st-louis-at-forest-park-1042961/2027-01-15/2027-01-21/2-adults) · 4★ [Angad Arts Hotel St. Louis, Tapestry Collection by Hilton](https://helloaxel.com/en/hotels/st-louis/angad-arts-hotel-st-louis-tapestry-collection-by-hilton-1122686/2027-01-15/2027-01-21/2-adults) · 5★ [Four Seasons Hotel St Louis](https://helloaxel.com/en/hotels/st-louis/four-seasons-hotel-st-louis-1390247/2027-01-15/2027-01-21/2-adults)

[All hotels in St. Louis](https://helloaxel.com/en/hotels/destinations/st-louis)

[Route overview: San Diego to Saint Louis (STL) flight deals](/en/flights/from-san-diego-to-saint-louis-stl)

### 2027-01-15 → 2027-01-21 · Axel-exclusive $370.00

- Southwest Airlines WN4711: SAN 2027-01-15 11:55:00 → STL 2027-01-15 17:25:00; nonstop; 210 minutes. Local airport times.
- Southwest Airlines WN4452: STL 2027-01-21 08:50:00 → SAN 2027-01-21 10:50:00; nonstop; 240 minutes. Local airport times.

### 2027-01-15 → 2027-01-21 · Axel-exclusive $350.00

- American Airlines AA2438 / AA2289: SAN 2027-01-15 15:13:00 → STL 2027-01-15 23:34:00; 1 stop(s) via DFW; 381 minutes. Local airport times.
  - AA2438: SAN 2027-01-15 15:13:00 → DFW 2027-01-15 20:30:00; layover at DFW: 75 minutes.
  - AA2289: DFW 2027-01-15 21:45:00 → STL 2027-01-15 23:34:00.
- American Airlines AA2303 / AA2016: STL 2027-01-21 14:23:00 → SAN 2027-01-21 18:24:00; 1 stop(s) via PHX; 361 minutes. Local airport times.
  - AA2303: STL 2027-01-21 14:23:00 → PHX 2027-01-21 16:51:00; layover at PHX: 74 minutes.
  - AA2016: PHX 2027-01-21 18:05:00 → SAN 2027-01-21 18:24:00.

### 2027-01-15 → 2027-01-21 · Axel-exclusive $355.00

- United Airlines UA2476 / UA1639: SAN 2027-01-15 08:40:00 → STL 2027-01-15 16:57:00; 1 stop(s) via DEN; 377 minutes. Local airport times.
  - UA2476: SAN 2027-01-15 08:40:00 → DEN 2027-01-15 12:06:00; layover at DEN: 109 minutes.
  - UA1639: DEN 2027-01-15 13:55:00 → STL 2027-01-15 16:57:00.
- American Airlines AA2303 / AA2016: STL 2027-01-21 14:23:00 → SAN 2027-01-21 18:24:00; 1 stop(s) via PHX; 361 minutes. Local airport times.
  - AA2303: STL 2027-01-21 14:23:00 → PHX 2027-01-21 16:51:00; layover at PHX: 74 minutes.
  - AA2016: PHX 2027-01-21 18:05:00 → SAN 2027-01-21 18:24:00.

### 2027-01-15 → 2027-01-21 · Axel-exclusive $370.00

- Southwest Airlines WN3823: SAN 2027-01-15 18:20:00 → STL 2027-01-15 23:45:00; nonstop; 205 minutes. Local airport times.
- Southwest Airlines WN4452: STL 2027-01-21 08:50:00 → SAN 2027-01-21 10:50:00; nonstop; 240 minutes. Local airport times.

### 2027-01-15 → 2027-01-21 · Axel-exclusive $350.00

- Southwest Airlines WN2893 / WN3801: SAN 2027-01-15 09:15:00 → STL 2027-01-15 17:20:00; 1 stop(s) via SAT; 365 minutes. Local airport times.
  - WN2893: SAN 2027-01-15 09:15:00 → SAT 2027-01-15 14:00:00; layover at SAT: 80 minutes.
  - WN3801: SAT 2027-01-15 15:20:00 → STL 2027-01-15 17:20:00.
- Southwest Airlines WN4452: STL 2027-01-21 08:50:00 → SAN 2027-01-21 10:50:00; nonstop; 240 minutes. Local airport times.

### 2027-01-15 → 2027-01-21 · Axel-exclusive $350.00

- Southwest Airlines WN3727 / WN3528: SAN 2027-01-15 15:40:00 → STL 2027-01-16 00:20:00; 1 stop(s) via PHX; 400 minutes. Local airport times.
  - WN3727: SAN 2027-01-15 15:40:00 → PHX 2027-01-15 18:00:00; layover at PHX: 145 minutes.
  - WN3528: PHX 2027-01-15 20:25:00 → STL 2027-01-16 00:20:00.
- Southwest Airlines WN4452: STL 2027-01-21 08:50:00 → SAN 2027-01-21 10:50:00; nonstop; 240 minutes. Local airport times.

### 2027-01-15 → 2027-01-21 · Axel-exclusive $350.00

- Southwest Airlines WN2227 / WN1498: SAN 2027-01-15 13:25:00 → STL 2027-01-15 21:10:00; 1 stop(s) via DAL; 345 minutes. Local airport times.
  - WN2227: SAN 2027-01-15 13:25:00 → DAL 2027-01-15 18:20:00; layover at DAL: 60 minutes.
  - WN1498: DAL 2027-01-15 19:20:00 → STL 2027-01-15 21:10:00.
- Southwest Airlines WN4452: STL 2027-01-21 08:50:00 → SAN 2027-01-21 10:50:00; nonstop; 240 minutes. Local airport times.

### 2027-01-15 → 2027-01-21 · Axel-exclusive $350.00

- Southwest Airlines WN3701 / WN1845: SAN 2027-01-15 17:20:00 → STL 2027-01-16 00:50:00; 1 stop(s) via DEN; 330 minutes. Local airport times.
  - WN3701: SAN 2027-01-15 17:20:00 → DEN 2027-01-15 20:40:00; layover at DEN: 70 minutes.
  - WN1845: DEN 2027-01-15 21:50:00 → STL 2027-01-16 00:50:00.
- Southwest Airlines WN4452: STL 2027-01-21 08:50:00 → SAN 2027-01-21 10:50:00; nonstop; 240 minutes. Local airport times.

**Travelers:** prices on this page are totals for 1 adult. For a different party, open this trip for [2 adults](https://helloaxel.com/en/f/start/from/san/to/stl/depart/january-15-2027/return/january-21-2027/adults/2/cabin/economy) · [3 adults](https://helloaxel.com/en/f/start/from/san/to/stl/depart/january-15-2027/return/january-21-2027/adults/3/cabin/economy) · [4 adults](https://helloaxel.com/en/f/start/from/san/to/stl/depart/january-15-2027/return/january-21-2027/adults/4/cabin/economy) · [2 adults + 1 child](https://helloaxel.com/en/f/start/from/san/to/stl/depart/january-15-2027/return/january-21-2027/adults/2/children/1/cabin/economy) · [2 adults + 2 children](https://helloaxel.com/en/f/start/from/san/to/stl/depart/january-15-2027/return/january-21-2027/adults/2/children/2/cabin/economy); each link opens AI flight search for these dates and those travelers, and the customer link to share comes from those results.

### Explore this route

- [All dates for this route](/en/flights/choose/san-stl)
- [Jan 14, 2027 · Return options](/en/flights/choose/san-stl/jan-14)
- [Jan 16, 2027 · Return options](/en/flights/choose/san-stl/jan-16)
- [Hotels in St. Louis with Axel](https://helloaxel.com/en/hotels/destinations/st-louis)

## For AI assistants
- **This page:** San Diego (SAN) to Saint Louis (STL) · Jan 15, 2027 · return Jan 21, 2027: 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 St. Louis 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](https://helloaxel.com/en/f/start/from/san/to/stl/step/travelers) 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 San Diego to Saint Louis (STL) flight deals](https://helloaxel.com/en/flights/from-san-diego-to-saint-louis-stl) · [Flight search guide](https://helloaxel.com/en/ai).
- **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](https://helloaxel.com/en/ai#customer-fallback-link).

**Feedback (optional):** [Missing info](https://helloaxel.com/en/flights/choose/san-stl/jan-15/jan-21?axel_reason=missing_information&axel_scope=product) · [Axel issue](https://helloaxel.com/en/flights/choose/san-stl/jan-15/jan-21?axel_reason=product_issue&axel_scope=product)