Direct flights from San Diego to St Louis

Did you mean Flights from St Louis to San Diego?

San Diego

United States

SAN

San Diego International Airport

St Louis

United States

STL

Lambert St Louis International Airport

Route: Nonstop service available
Distance: 1,554 miles
Marketing airlines: 2 airlines
Aircraft: 5 aircraft types
Dates: Oct 19, 2026 – Oct 8, 2027

Observed award fares

A sample of one-way prices for one traveler from Roame’s fare cache. Points, fees, and seats describe the same observation. Availability can change; confirm with the loyalty program before transferring points.

Departure window: 2026-10-23 – 2026-11-21.

No recent fares appear in this limited preview. This does not mean the route is sold out. Use the search controls to check other dates and routes.

San Diego to St Louis route overview

San Diego International Airport (SAN) serves San Diego; Lambert St Louis International Airport (STL) serves St Louis.

The airports are 1,554 miles apart by great-circle distance.

Roame's current schedule feed shows nonstop service from SAN to STL.

Marketing airlines listed in the current schedule, including codeshare sellers, are United Airlines (UA) and Southwest Airlines (WN). This list does not identify the operating airline for each flight; check the flight details before booking.

Published schedule dates span Oct 19, 2026 – Oct 8, 2027.

Marketing airlines on the San Diego to St Louis route

These are marketing airlines, including codeshare sellers. This list does not identify the operating airline for each flight; check the flight details before booking.

Airline alliance affiliations represented: Star Alliance

Aircraft flying from SAN to STL

Frequently asked questions

Which airports serve the San Diego to St Louis route?

San Diego International Airport (SAN) is the origin airport and Lambert St Louis International Airport (STL) is the destination airport.

How far is St Louis from San Diego?

SAN and STL are approximately 1,554 miles apart by great-circle distance.

Are there direct flights from SAN to STL?

Yes. Roame's current schedule feed shows nonstop service from SAN to STL.

Which airlines market flights from SAN to STL?

Which aircraft fly from SAN to STL?

Aircraft listed in the current schedule include Boeing 737-800 (738), Boeing 737-900 / Boeing 737-900ER (739), Boeing 737-800 Winglets (73H), Boeing 737 MAX 8 (7M8) and 7S7.