Cheap flights from San Diego to St. Louis

Flights overview

Useful information for finding cheap flights from San Diego to St. Louis and booking your next trip
Cheapest round-trip flights $130
Frontier 1 stop 26 hr Thu, Jan 15 — Wed, Jan 21
The cheapest round-trip flight from San Diego to St. Louis is currently $130
Cheapest one-way flight $65
Frontier 1 stop 6 hr Wed, Jan 14
The cheapest one-way flight from San Diego to St. Louis is currently $65
Cheapest nonstop flights $346
Southwest Nonstop 4 hr Thu, Jan 22 — Wed, Jan 28
The cheapest nonstop round-trip flight from San Diego to St. Louis is currently $346
Last-minute weekend getaway $382
Frontier 1 stop 26 hr Thu, Nov 20 — Sun, Nov 23
The cheapest last-minute weekend getaway from San Diego to St. Louis is currently $382
Cheapest business class flights $803
United 1 stop 17 hr Fri, Jan 30 — Sat, Feb 7
The cheapest business class round-trip flight from San Diego to St. Louis is currently $803
Fastest flight 3 hr 30 min The fastest nonstop flight from San Diego to St. Louis takes 3 hr 30 min
Nonstop flights Every day There are direct flights on this route every day.

When is the cheapest time to fly?

The cheapest month to fly from San Diego to St. Louis is typically January. The most expensive month to fly is typically July.
January
Cheapest
Typical prices: $125–280
July
Most expensive
Typical prices: $260–400

Popular airlines from San Diego to St. Louis

  • Southwest
    Nonstop
    from $318
    Typical price: $325–660
    11 weekly nonstop flights
    SAN - STL Every day
    1260 weekly connecting flights
    SAN - STL Every day
  • American
    from $280
    Typical price: $275–630
    315 weekly connecting flights
    SAN - STL Every day
  • United
    from $252
    Typical price: $275–600
    242 weekly connecting flights
    SAN - STL Every day
  • Delta
    from $339
    Typical price: $275–690
    205 weekly connecting flights
    SAN - STL Every day
  • Frontier
    from $130
    Typical price: $150–445
    23 weekly connecting flights
    SAN - STL Every day
  • Alaska
    from $338
    Typical price: $410–730
    21 weekly connecting flights
    SAN - STL Every day

Popular airports near San Diego

  • San Diego International Airport (SAN)
    San Diego United States 10 min 2 mi
  • Tijuana International Airport (TIJ)
    Tijuana Mexico 37 min 16 mi
  • Los Angeles International Airport (LAX)
    Los Angeles United States 2 hr 2 min 111 mi
  • John Wayne Airport (SNA)
    Santa Ana United States 1 hr 22 min 78 mi

Popular airports near St. Louis

  • St. Louis Lambert International Airport (STL)
    St. Louis United States 21 min 12 mi
  • MidAmerica St. Louis Airport (BLV)
    Belleville United States 34 min 20 mi
  • General Wayne A. Downing Peoria International Airport (PIA)
    Peoria United States 2 hr 35 min 143 mi
  • Indianapolis International Airport (IND)
    Indianapolis United States 3 hr 28 min 222 mi

Frequently asked questions about flying from San Diego to St. Louis

When are the cheapest days to fly from San Diego to St. Louis?
The cheapest flights from San Diego to St. Louis are usually in January. Typical ticket prices in January range from $125 to $280.
Which airlines provide the cheapest flights from San Diego to St. Louis?
The cheapest round-trip flight from San Diego to St. Louis recently found on Google Flights was with Frontier from $130. The cheapest one-way flight was with Frontier from $65.

Some of the cheapest round-trip deals we found with different airlines:
  • The cheapest Southwest flight from San Diego to St. Louis is $318, flying from Jan 26 to Feb 2.
  • The cheapest American flight from San Diego to St. Louis is $280, flying from Feb 5 to Feb 14.
  • The cheapest United flight from San Diego to St. Louis is $252, flying from Jan 11 to Jan 17.
  • The cheapest Delta flight from San Diego to St. Louis is $339, flying from Jan 22 to Jan 28.
  • The cheapest Frontier flight from San Diego to St. Louis is $130, flying from Jan 15 to Jan 21.
  • The cheapest Alaska flight from San Diego to St. Louis is $338, flying from Jan 29 to Feb 4.
What are the cheapest flights from San Diego to St. Louis?
The cheapest round-trip flight from San Diego to St. Louis starts at $130 from Thu, Jan 15 to Wed, Jan 21. The cheapest one-way flight starts at $65 and departs on Wed, Jan 14.
How long does it take to fly from San Diego to St. Louis?
3 hr 30 min is the shortest flight time from San Diego to St. Louis.
When should you fly to St. Louis, United States?
Apr–Sep is the most popular time to visit, coinciding with hot, humid summer and events like Fair St. Louis, a huge Fourth of July festival at Forest Park, and the Taste of St. Louis food festival (Sep). Weather in winter is cold, with occasional snow.
How do I find cheap dates to fly from San Diego to St. Louis?
It's easy to use Google Flights to find the cheapest days to fly from San Diego to St. Louis.
Just click the Departure label near the top of the page to open the calendar. Choose a start date and a return date to see how the round-trip fare changes on those specific days.
Adjust the trip type to see one-way fares. The cheapest available flights are highlighted and easy to spot. Once you settle on dates, click the Search button to see flight options and book the deal.

You can also turn on price tracking to get alerts if the price changes for a route or flight.
What is the best airline to fly from San Diego to St. Louis?
What counts as the best airline for your flights from San Diego to St. Louis really depends on your individual needs. You may have a favorite carrier or a loyalty program you like, but price, convenience, and airports served also come into play. Flexibility and booking terms – Can you change flights if you want to stay longer or get a refund if you have to postpone your trip? – are also factors that help determine which airline is best to fly from San Diego to St. Louis.

In terms of nonstop flights, Southwest is the most popular. Southwest offers 11 nonstop flights and 1,260 connecting flights per week. Southwest flies from San Diego International Airport (SAN) to St. Louis Lambert International Airport (STL) .

Other popular airlines flying from San Diego to St. Louis are:
  • American offers 315 connecting flights per week. American flies from San Diego International Airport (SAN) to St. Louis Lambert International Airport (STL) .
  • United offers 242 connecting flights per week. United flies from San Diego International Airport (SAN) to St. Louis Lambert International Airport (STL) .
  • Delta offers 205 connecting flights per week. Delta flies from San Diego International Airport (SAN) to St. Louis Lambert International Airport (STL) .
  • Frontier offers 23 connecting flights per week. Frontier flies from San Diego International Airport (SAN) to St. Louis Lambert International Airport (STL) .
  • Alaska offers 21 connecting flights per week. Alaska flies from San Diego International Airport (SAN) to St. Louis Lambert International Airport (STL) .
The number of connecting flights refers to distinct flights with at least one stop between San Diego and St. Louis.
Which airlines provide the cheapest flights from San Diego to St. Louis?
The cheapest round-trip flight from San Diego to St. Louis recently found on Google Flights was with Frontier from $130. The cheapest one-way flight was with Frontier from $65.

Some of the cheapest round-trip deals we found with different airlines:
  • The cheapest Southwest flight from San Diego to St. Louis is $318, flying from Jan 26 to Feb 2.
  • The cheapest American flight from San Diego to St. Louis is $280, flying from Feb 5 to Feb 14.
  • The cheapest United flight from San Diego to St. Louis is $252, flying from Jan 11 to Jan 17.
  • The cheapest Delta flight from San Diego to St. Louis is $339, flying from Jan 22 to Jan 28.
  • The cheapest Frontier flight from San Diego to St. Louis is $130, flying from Jan 15 to Jan 21.
  • The cheapest Alaska flight from San Diego to St. Louis is $338, flying from Jan 29 to Feb 4.
Which airlines have direct flights from San Diego to St. Louis?
Southwest flies direct from San Diego to St. Louis.
  • There are 11 Southwest direct flights from San Diego to St. Louis per week. Flights are available every day.
Use the Stops filter while searching for flights, to see only nonstop options in your results.
Which airline provides the cheapest last-minute getaway flight from San Diego to St. Louis?
The cheapest last-minute deal between San Diego and St. Louis at price $382 is offered by Frontier from Thu, Nov 20 to Sun, Nov 23.
Which airlines have direct flights from San Diego to St. Louis?
Southwest flies direct from San Diego to St. Louis.
  • There are 11 Southwest direct flights from San Diego to St. Louis per week. Flights are available every day.
Use the Stops filter while searching for flights, to see only nonstop options in your results.
When are direct flights from San Diego to St. Louis available?
There are direct flights from San Diego to St. Louis on a daily basis.
What are the cheapest direct flights from San Diego to St. Louis?
The cheapest direct (nonstop) round-trip flights between San Diego and St. Louis start at $346 from Thu, Jan 22 to Wed, Jan 28 with Southwest.
How can I find nonstop flights from San Diego to St. Louis?
It's easy to find nonstop flights with Google Flights! Once you've searched for flights from San Diego to St. Louis, just select the nonstop flights only option in the 'Stops’ filter in the search form and view all available direct flights and their prices.
What are the cheapest business class flights from San Diego to St. Louis?
The cheapest business class round-trip flights between San Diego and St. Louis start at $803 from Fri, Jan 30 to Sat, Feb 7 with United.
What are the cheapest economy class flights from San Diego to St. Louis?
The cheapest economy class round-trip flights between San Diego and St. Louis start at $130 from Thu, Jan 15 to Wed, Jan 21.
How can I book business class trips from San Diego to St. Louis?
To book business class trips from San Diego to St. Louis, look for the default Economy selection at the top, and change it to your desired cabin class such as Premium Economy, Business Class, or First Class. You can then select your departure and arrival dates, consider available options, and book your business travel.

You can also adjust the trip type to view one-way fares.
Are there any last-minute deals from San Diego to St. Louis next weekend?
The best last-minute getaway deal for the next weekend between San Diego and St. Louis starts at $382 from Thu, Nov 20 to Sun, Nov 23 with Frontier.
Which airline provides the cheapest last-minute getaway flight from San Diego to St. Louis?
The cheapest last-minute deal between San Diego and St. Louis at price $382 is offered by Frontier from Thu, Nov 20 to Sun, Nov 23.
How can I find last-minute flight deals from San Diego to St. Louis?
To find last-minute flight deals from San Diego to St. Louis, start by entering the city names, select the desired departure and return dates, and hit the Search button to view flight options.

You can check for last-minute flights for the same day or adjust the trip type to see one-way fares.

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