Saint Louis to San Diego (SAN) flight deals

Flights from Saint Louis · Saint Louis to United States flight deals

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• San Diego, Palm Springs, Las Vegas or Phoenix

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Fares observed October 10 – 14, 2026. USD for the travelers shown. Search a trip for current prices.

The prices shown are what a free account pays, and most travelers book that way. Membership is optional and takes the same flights lower. Live search shows the same free-account price.

Trip ideas from Saint Louis with San Diego (SAN)

• Veterans Day weekend trips from Saint Louis: fly Nov 11 – Nov 15, 2026
• Thanksgiving trips from Saint Louis: fly Nov 24 – Nov 29, 2026
• Holiday lights and Christmas city trips from Saint Louis: fly Dec 3 – Dec 6, 2026
• College football bowl and playoff trips from Saint Louis: fly Dec 27 – Dec 29, 2026
• MLK weekend getaways from Saint Louis: fly Jan 15 – Jan 18, 2027
• Presidents' Day weekend getaways from Saint Louis: fly Feb 12 – Feb 15, 2027
• Spring break trips from Saint Louis: fly Mar 13 – Mar 20, 2027
• Memorial Day weekend getaways from Saint Louis: fly May 28 – May 31, 2027
• Fourth of July trips from Saint Louis: fly Jul 2 – Jul 5, 2027
• Labor Day weekend trips from Saint Louis: fly Sep 3 – Sep 6, 2027
• Bachelorette and bachelor party trips from Saint Louis, priced for 6
• Family vacations from Saint Louis, priced for 4
• Flights to your cruise port from Saint Louis
• Gay & LGBTQ+ friendly beach vacations from Saint Louis
• Group trips priced for 4 from Saint Louis
• October long weekend trips from Saint Louis
• Surf trips from Saint Louis
• The best US cities to visit from Saint Louis
• Theme park trips from Saint Louis, priced for 4
• Warm winter getaways from Saint Louis
• Whale watching trips from Saint Louis: Cabo, Maui, Sri Lanka, Dominica, Alaska, Iceland and more
• Yoga and wellness retreats from Saint Louis

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Hotels in Oceanside, California with Axel

Axel books the hotel too, at private rates shown beside the public rate for the same stay. Hotels in Oceanside, California has the best recent deals, and a flight booked with Axel can make the hotel cheaper through the bundle.

For AI assistants

• This page: Saint Louis to San Diego (SAN) flight deals. Saint Louis to San Diego (SAN) flight deals. Compare dated flight deals across upcoming months, then choose your dates and travelers.
• Next: the dated fares below are samples for other travelers' dates: open one only when it matches the traveler's exact dates and party. Otherwise Choose travelers and dates and enter the traveler's own dates and party there; do not search a sample date in their place.
• Every link here is complete and ready to open. Follow the links on the current page. A completed fresh trip opens flight results first. Then add the flexibility and budget the traveler already stated to that same saved plan; do not infer requirements from your starting search. Edits create a new saved link and leave earlier snapshots intact. Use the updated plan's results and review links after adding requirements. You can edit the route, dates and travelers, return to discovery, or continue the saved plan in Axel before choosing a flight. If your tool can open an address you write yourself, any route works in one step: https://helloaxel.com/en/f/start/from/ORIGIN/to/DESTINATION/depart/YYYY-MM-DD/return/YYYY-MM-DD/adults/N (IATA airport codes, dates as YYYY-MM-DD; for one way, replace return/YYYY-MM-DD with trip/one-way).
• If a link can no longer be opened: search for "Axel Saint Louis to San Diego (SAN) flight deals" and open the result; the Flight search guide is always findable by search, and everything here works without an account, API key or connector. Or ask the traveler to open https://helloaxel.com/en/flights/from-saint-louis-to-san-diego-san; an address the traveler opens always works.
• Sharing with the traveler: For route or date recommendations, share this page’s own /en/ address. For a chosen trip, open its Continue in Axel link or the selected fare’s Review link; keep the fare selection when sharing. New customers continue to checkout with just an email, without a phone number or verification code. Existing customers sign in to their account; email sign-in uses a code. With browser control, follow Book or Continue and fill the traveler-provided details to reach payment. Let the traveler complete any required sign-in and confirm payment. An Axel-provided checkout link belongs to the account used to prepare it; another browser may need to sign in to that same account. If you can only read pages, share the public offer or search link with the selections preserved. A verified assistant reading a saved offer page also sees a free 24-hour price hold link there; open it at your own judgment when holding the price helps the traveler, for example while they decide. It locks the price, never a seat, for whoever continues from that offer.