St Louis to San Diego (STL–SAN) — Airlines, Schedules & Connections

STL Airport Page →
1,554 mi airlines 8/wk
On-time Some delays Frequent delays
Flight Schedule 5 flights Verified 53m ago
Nonstop 1-Stop 2-Stop Hide separate tickets Hide overnight Hide codeshares
  Flight Airline AC Dep Arr Dur OTP Sched  
✈ Nonstop
✓
→
WN4515
WN Southwest
B38M
7:00 AM
CDT T2
9:00 AM
PDT
4h
—
M T W T F S S
Prices
✓
→
WN2639
WN Southwest
7M8
2:35 PM
CDT T2
4:30 PM
PDT
3h 55m
—
M T W T F S S
Prices
✓
←
WN4451
WN Southwest
7S7
7:05 AM
PDT T1
12:35 PM
CDT
3h 30m
—
M T W T F S S
Prices
✓
←
WN2281
WN Southwest
73H
1:35 PM
PDT T1
7:10 PM
CDT
3h 35m
—
M T W T F S S
Prices
✓
←
WN1538
WN Southwest
7M8
3:11 PM
PDT T1
8:22 PM
CDT
3h 11m
—
M T W T F S S
Prices

No flights match your filters.

No nonstop flights on this route. connecting options below.

✦ 1-STOP More options, longer trips
✧ 2-STOP Loading... Reach the hardest destinations
St Louis to San Diego
1 carrier, 8 flights/week nonstop.
1 Airlines 8 Flights/wk 1,554 mi 3h 55m nonstop -2h behind 96 1-stop hubs

STL–SAN is served by 1 airline with nonstop service. Southwest Airlines leads the route. The flight covers 1,554 miles in approximately 3h 55m. Beyond nonstop, 96 hubs offer 1-stop connections.

Also explore STL Routes SAN Routes STL Live Flights SAN Live Flights STL Delays SAN Delays
Carriers on this route

Airline Landscape

All carriers operating nonstop STL–SAN service, compared side by side.
Airline Freq/wk Aircraft Duration Dep OTP Alliance Codeshares
WN Southwest Airlines 8 7M8, B38M 3h55-4h 100% – –
Aircraft on this route
7M8 Boeing 737 MAX 8 – WN
B38M Boeing 737 MAX 8 – WN
Alliance coverage
Unaffiliated: WN (8 flights/wk, 100%)
OTP based on airport-level delay snapshots. Duration ranges reflect seasonal/directional variation.
Schedule

Weekly Schedule Pattern

Nonstop flight frequency by day of week, STL to SAN direction.
Mon
1
flight
Tue
1
flight
Wed
1
flight
Thu
1
flight
Fri
1
flight
Sat
2
flights
Sun
1
flight
Departure time distribution
12 AM6 AM12 PM6 PM12 AM
Morning departures
Afternoon/evening departures
2
Nonstop flights
8
Outbound / wk
8
Return / wk
Connections

Connection Landscape

Beyond nonstop. 1-stop and 2-stop options for STL to SAN.
1-STOP
One-Stop Connections
96
Hubs
~5h
Fastest
~30h
Longest
Verified with published schedule alignment and minimum connection time.
2-STOP
Two-Stop Connections
2,589
Candidates
Two-stop connections loaded in the connections tab above.
Connections computed from published schedules with minimum connection time verification. Use the interactive explorer above the fold to filter by airline, tier, and layover time.
Know before you go

Travel Essentials

Practical planning for this route.
Time Difference
-2h
San Diego is 2 hours behind St Louis.
STL: CDT · SAN: PDT

When it's 6:00 PM in St Louis, it's 4:00 PM in San Diego.
Distance & Flight Time
1,554 mi / 2,501 km
Nonstop flight time is approximately 3h 55m to 4h 0m.
Facts

STL–SAN Quick Facts

Key statistics for the St Louis to San Diego route.
Route details
Distance1,554 mi / 2,501 km
Flight time3h 55m to 4h
Time difference-2 hours
Airlines (nonstop)1
Weekly flights8 out / 8 return
1-stop connections96 hubs
Origin: STL
Full nameSt. Louis Lambert International Airport
IATA / ICAOSTL / KSTL
TimezoneAmerica/Chicago
Passengers/yr15.6M
Elevation618 ft / 188 m
Destination: SAN
Full nameSan Diego International Airport
IATA / ICAOSAN / KSAN
TimezoneAmerica/Los_Angeles
Passengers/yr25.6M
Elevation17 ft / 5 m
FAQ

Frequently Asked Questions

Common questions about STL to SAN flights.
Nonstop flights from St. Louis Lambert International Airport to San Diego International Airport take approximately 3h 55m to 4h. The route covers 1,554 miles.
1 airline operates nonstop service: Southwest Airlines.
There are approximately 8 nonstop flights per week from STL to SAN. The return direction has about 8 weekly flights.
Yes, 1-stop connections are available through MKC, VNY, APA, TUS, SCF, PWK, ICT, DAY, SUS, IND, FTW, BJC, SBA, PSP, SJC, BUR, RST, RNO, EGE, BOI, SUN, OKC, BHM, GYR, OGD, BFI, BZN, TUL, APC, ELP, CHS, SRQ, MRY, FCA, MMU, PVR, SBN, APF, SNA, BDL, TVC, TEB, FXE, ABQ, PBI, SUA, RIC, BED, GCM, OMA, MSY, SAT, LAX, IAD, IAH, SMF, ATL, PHX, DFW, KOA, SFO, MSP, ORD, DEN, TPA, MDW, BNA, DAL, SEA, LAS, SLC, DTW, HOU, AUS, MCO, YUL, MKE, PDX, MCI, PHL, JAX, BWI, CMH, DCA, LHR, YYZ, CLT, PIT, MIA, BOS, EWR, FLL, RDU, JFK, SJD and HND. These options provide additional schedule flexibility.
San Diego is 2 hours behind St Louis.
Yes, return flights from SAN to STL are available. Use the direction toggle at the top to view the return schedule.
Click the 'Search Flights' button to check availability and prices on Google Flights. You can also compare airlines and schedules on this page to find the best option.
See the On-Time Performance section for the latest delay data at both airports. This shows departure and arrival reliability to help you plan.
Route data is updated regularly from official airline schedules. On-time performance data comes from recent airport delay snapshots.

Flights from STL to SAN

St. Louis Lambert International Airport (STL) and San Diego International Airport (SAN) are connected by nonstop service from Southwest Airlines. With 8 weekly departures, this is a regularly served route.

STL to SAN Flight Duration and Schedule

Nonstop flight time from STL to SAN ranges from 3 hours 55 minutes to 4 hours 0 minutes. The route covers a distance of 1,554 miles (2,501 km). There are approximately 8 weekly flights outbound and 8 return, totaling 16 flights per week in both directions.

Connecting Options and Alternatives

96 one-stop connections are available, with the fastest taking approximately 5 hours via MKC. Two-stop connections are also available via intermediate hubs.