San Diego from St. Louis, Oct 16–18: round trip from $366
Round-trip flights on Frontier from St. Louis to San Diego cost $366 per person for Oct 16–18, 2026 when we checked, $86 below the typical fare on this route. Three places to stay start at $150 a night for the 2-night stay. Prices move; every link below shows the live price.
The flight
$452 $366 per person, round trip
the typical fare on this route
$732 for two, taxes and fees included · Frontier · 1 stop · 8h 19m
Out Fri, Oct 16, 1:30 PM – Fri, Oct 16, 7:49 PM
| Airline | Per person | Stops | Duration |
|---|---|---|---|
| Frontier | $366 | 1 stop | 8h 19m |
| Alaska | $535 | 1 stop | 22h 22m |
| Frontier | $366 | 1 stop | 5h 56m |
Prices checked Oct 12, 2026, 1:43 PM CDT. Prices change; the binding price is the one on the booking site.
Paid links: when you book through a link on this page, the booking site pays us a referral fee. Your price does not change. How we earn
Your trip for two
| For two | |
|---|---|
| Flights for two | $732 |
| Samesun Ocean Beach Hotel & Hostel, 2 nights | $299 |
| Trip total for two | $1,031 |
Regular: $1,203 You pay: $1,031 Saved: $172
the typical fare on this route.
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Why San Diego
Why we picked it: $366 per person all-in with highs of 84–90°F and little rain; heads-up, the Frontier trip connects and takes 8h 19m each way.
San Diego has the most reliable beach weather in the country, plus the famous zoo, Balboa Park, fish tacos and a laid-back surf culture.
Weather in San Diego, Oct 16–18
Highs 84–90°F, little rain expected
| Day | High | Low | Rain chance |
|---|---|---|---|
| Fri, Oct 16 | 90 °F | 77 °F | 0% |
| Sat, Oct 17 | 84 °F | 78 °F | 0% |
| Sun, Oct 18 | 84 °F | 75 °F | 1% |
Where to stay in San Diego
Samesun Ocean Beach Hotel & Hostel
$299 for 2 nights, two guests · $150 a night
See roomsKasa Little Italy San Diego
$1,134 for 2 nights, two guests · $567 a night
See roomsWyndham Garden San Diego near SeaWorld
$389 for 2 nights, two guests · $195 a night
See roomsAll hotels in San Diego for these dates
Paid links: when you book through a link on this page, the booking site pays us a referral fee. Your price does not change. How we earn
Where in San Diego
- Gaslamp Quarter / Downtown: Nightlife, Petco Park and the waterfront on foot.
- La Jolla: Coves, sea lions and upscale village hotels.
- Coronado: Wide beach and the landmark Hotel del Coronado.
- Mission Beach / Pacific Beach: Boardwalk, surf and a young bar scene.
- Mission Valley: Chain hotels with easy freeway access to the zoo and parks.
What to do in San Diego
Signature experiences
- Visit the San Diego Zoo and Balboa Park museums
- Kayak the sea caves at La Jolla
- Swim at Coronado Beach beside the Hotel del Coronado
- Tour the USS Midway aircraft carrier
- Eat fish tacos and craft beer in North Park
- Watch the sunset at Sunset Cliffs
Tours and tickets in San Diego
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Getting there and around
| Airports in St. Louis | St. Louis Lambert International (STL) |
|---|---|
| Airports in San Diego | San Diego International (SAN) |
| Flight time | 8h 19m (1 stop) |
| Distance | 1,561 miles each way |
| Time difference | -2 hours |
What 2 nights in San Diego costs
| Estimate | |
|---|---|
| Flights for two | $732 |
| Hotel, 2 nights (Samesun Ocean Beach Hotel & Hostel) | $299 |
| Food, getting around and tickets, 2 days for two | $520 |
| Total for two | $1,551 |
Flights and hotel are the prices we found; spending is a planning estimate for an upscale destination, per person per day times two.
Price history: St. Louis to San Diego
| Per person | |
|---|---|
| This trip | $366 per person |
| Lowest in the last 30 days | $366 (Oct 12, 2026) |
| Typical price, last 60 days | $452 |
| Price checks | 7 |
Good to know
- Passport: not needed for US citizens; a government ID is enough.
- Currency: US dollar (USD).
Questions readers ask
How much does 2 nights in San Diego from St. Louis cost?
About $1,551 for two: $732 in flights, $299 for the hotel and $520 for food, getting around and tickets.
What is the weather like in San Diego Oct 16–18?
Highs 84–90°F, little rain expected
Do I need a passport for San Diego?
No. For US citizens a government photo ID is enough on this trip.
How long is the flight from St. Louis to San Diego?
8h 19m with 1 stop on Frontier, on the fare we found.
Is $366 a good price for St. Louis to San Diego?
It is 19% below the typical $452 per person we see on this route, which is why it made the list.
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Image credits
- Photo: Stephen Leonardi / Pexels, Pexels License
- Photo: Soly Moses / Pexels, Pexels License
- Photo: Kindel Media / Pexels, Pexels License