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

STL Airport Page →
1,554 mi airlines 17/wk
On-time Some delays Frequent delays
Flight Schedule 12 flights Verified 1h ago
Nonstop 1-Stop 2-Stop Hide separate tickets Hide overnight
  Flight Airline AC Dep Arr Dur OTP Sched  
WN4515
WN Southwest
73H
8:25 AM
EDT T2
10:25 AM
PDT
4h
M T W T F S S
Prices
WN2548
WN Southwest
73H
8:25 AM
EDT T2
10:30 AM
PDT
4h 5m
M T W T F S S
Prices
WN2639
WN Southwest
7M8
2:35 PM
EDT T2
4:30 PM
PDT
3h 55m
M T W T F S S
Prices
WN158
WN Southwest
737
6:00 PM
EDT T2
8:05 PM
PDT
4h 5m
M T W T F S S
Prices
WN2709
WN Southwest
6:46 AM
PDT
1:32 PM
EDT
3h 46m
M T W T F S S
Prices
WN4451
WN Southwest
7S7
7:05 AM
PDT T1
12:35 PM
EDT
3h 30m
M T W T F S S
Prices
WN1474
WN Southwest
7M8
7:10 AM
PDT T1
12:45 PM
EDT
3h 35m
M T W T F S S
Prices
WN1166
WN Southwest
7M8
12:20 PM
PDT T1
5:50 PM
EDT
3h 30m
M T W T F S S
Prices
WN1538
WN Southwest
7M8
1:20 PM
PDT T1
6:55 PM
EDT
3h 35m
M T W T F S S
Prices
AA2131
AA American
1:33 PM
PDT
8:03 PM
EDT
3h 30m
M T W T F S S
Prices
WN4534
WN Southwest
73H
2:16 PM
PDT T1
8:17 PM
EDT
3h 1m
M T W T F S S
Prices
WN2281
WN Southwest
73H
2:50 PM
PDT T1
8:20 PM
EDT
3h 30m
M T W T F S S
Prices

No flights match your filters.

No nonstop flights on this route. connecting options below.

1-STOP
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St Louis to San Diego
1 carrier, 17 flights/week nonstop.
1 Airlines 17 Flights/wk 1,554 mi 3h 55m nonstop -3h behind 61 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, 61 hubs offer 1-stop connections.

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 16 737, 73H, 7M8 3h55-4h05 100%
Aircraft on this route
737 Boeing 737-700 – WN
73H Boeing 737-800 – WN
7M8 Boeing 737 MAX 8 – WN
Alliance coverage
Unaffiliated: WN (16 flights/wk, 100%)
OTP based on airport-level delay snapshots. Duration ranges reflect seasonal/directional variation.

Weekly Schedule Pattern

Nonstop flight frequency by day of week, STL to SAN direction.
Mon
2
flights
Tue
2
flights
Wed
2
flights
Thu
2
flights
Fri
2
flights
Sat
4
flights
Sun
2
flights
Departure time distribution
12 AM6 AM12 PM6 PM12 AM
Morning departures
Afternoon/evening departures
4
Nonstop flights
17
Outbound / wk
18
Return / wk

Connection Landscape

Beyond nonstop. 1-stop and 2-stop options for STL to SAN.
1-STOP
One-Stop Connections
61
Hubs
~4h
Fastest
~26h
Longest
Verified with published schedule alignment and minimum connection time.
2-STOP
Two-Stop Connections
2,383
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.

On-Time Performance

What to expect at each end of your journey.
Outbound
STL → SAN
100%
Generally reliable. Most flights run on time.
Departing
100%
Arriving
51%
Return
SAN → STL
100%
Generally reliable. Most flights run on time.
Departing
100%
Arriving
33%
OTP = percentage of flights arriving within 15 min of schedule. Based on airport-level delay snapshots. STL delays → SAN delays →

Travel Essentials

Practical planning for this route.
Time Difference
-3h
San Diego is 3 hours behind St Louis.
STL: EDT · SAN: PDT

When it's 6:00 PM in St Louis, it's 3:00 PM in San Diego.
Distance & Flight Time
1,554 mi / 2,501 km
Nonstop flight time is approximately 3h 55m to 4h 21m.

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 21m
Time difference-3 hours
Airlines (nonstop)1
Weekly flights17 out / 18 return
1-stop connections61 hubs
Origin: STL
IATA / ICAOSTL / KSTL
TimezoneAmerica/Indiana/Vincennes
Passengers/yr15.6M
Elevation618 ft / 188 m
Destination: SAN
IATA / ICAOSAN / KSAN
TimezoneAmerica/Los_Angeles
Passengers/yr25.6M
Elevation17 ft / 5 m

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 21m. The route covers 1,554 miles.
1 airline operates nonstop service: Southwest Airlines.
There are approximately 17 nonstop flights per week from STL to SAN. The return direction has about 18 weekly flights.
Yes, 1-stop connections are available through ICT, SBA, DAY, BJC, MKC, PSP, SCF, EGE, OGD, MRY, BFI, ELP, SJC, BHM, APC, BZN, RDU, SJD, PBI, SUA, TEB, PVR, SAT, IAD, SMF, LAX, DTW, IAH, ORD, DFW, LAS, ATL, AUS, MDW, SFO, DEN, HOU, DAL, PHX, SLC, OMA, MSP, BNA, MIA, MCO, ABQ, BWI, SEA, MCI, FLL, EWR, YYZ, CLT, TPA, MKE, CMH, PHL, MSY, BOS, DCA and IND. These options provide additional schedule flexibility.
San Diego is 3 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 17 weekly departures, this is a well 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 21 minutes. The route covers a distance of 1,554 miles (2,501 km). There are approximately 17 weekly flights outbound and 18 return, totaling 35 flights per week in both directions.

Connecting Options and Alternatives

61 one-stop connections are available, with the fastest taking approximately 4 hours via ICT. Two-stop connections are also available via intermediate hubs.