Cheap flights from St. Louis to San Diego

Round-trip
Economy
St. Louis (STL)
San Diego (SAN)
Sat 8/28
Sat 9/4
Any month
Compare vs. momondo |

Travel Restriction Alert

The COVID-19 (coronavirus) outbreak may impact travel from Lambert-St Louis to San Diego.
View current United States travel restrictions

Flight information for St. Louis to San Diego
(STL to SAN)

Find info about flight duration, direct flights, and airports for your flight from St. Louis to San Diego
Best Price Found$114The best flight deal from St. Louis to San Diego found on momondo in the last 72 hours is $114
Fastest flight time5h 28mThe fastest flight from St. Louis to San Diego takes 5h 28m
Direct flightsNoneThere are no direct flights from St. Louis to San Diego. Popular non-direct route for this connection is Lambert-St Louis - San Diego.
Airports in San Diego2 airportsThere are 2 airports near San Diego: San Diego (SAN), San Diego Carlsbad-Palomar (CLD)

How to get the cheapest flight ticket from St. Louis to San Diego

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly from St. Louis to San Diego?

August
The cheapest time of year to fly to San Diego from St. Louis is August. Most expensive is March

What is the cheapest day to depart St. Louis for San Diego?

Tuesday
The cheapest day of the week is typically Tuesday. The most expensive is typically Sunday

When is the cheapest time to fly from St. Louis to San Diego?

in the evening
St. Louis to San Diego flights are approximately 14% more expensive in the afternoon than in the evening

What is the cheapest airline that flies to San Diego from St. Louis?

Frontier
Frontier, Delta, and United Airlines are the most popular carriers operating from St. Louis to San Diego

What is the cheapest St. Louis to San Diego flight route?

Lambert-St Louis - San Diego
Fly from Lambert-St Louis to San Diego for the best St. Louis - San Diego flight prices
STL
Lambert-St Louis
SAN
San Diego

How far in advance should you book St. Louis to San Diego flights?

41 days before
The cheapest time to buy a flight from St. Louis to San Diego is approximately 41 days to departure
60
Days before departure
0

Easily compare round-trip flights from St. Louis to San Diego

Below you can see the best fares for your round-trip flight route over the next three months. All fares were found on momondo this week. Browse the quickest and cheapest flights from St. Louis to San Diego by changing tabs
Multiple Airlines
Aug 12
STL9:40 amLambert-St Louis
6h 15m
1 stop
SAN3:55 pmSan Diego
Aug 17
SAN5:28 pmSan Diego
6h 50m
1 stop
STL12:18 amLambert-St Louis
Multiple Airlines
Aug 16
STL9:30 amLambert-St Louis
8h 59m
1 stop
SAN6:29 pmSan Diego
Aug 17
SAN5:28 pmSan Diego
6h 50m
1 stop
STL12:18 amLambert-St Louis
Multiple Airlines
Aug 13
STL9:30 amLambert-St Louis
8h 59m
1 stop
SAN6:29 pmSan Diego
Aug 17
SAN5:28 pmSan Diego
6h 50m
1 stop
STL12:18 amLambert-St Louis

Find the cheapest one-way flights from St. Louis to San Diego

If you're looking for one-way flights from St. Louis to San Diego, view some of our deals below provided by Spirit Airlines
Multiple Airlines
Aug 4
STL10:03 amLambert-St Louis
8h 26m
1 stop
SAN6:29 pmSan Diego
Spirit Airlines
Aug 26
STL9:40 amLambert-St Louis
8h 49m
1 stop
SAN6:29 pmSan Diego
Spirit Airlines
Aug 3
STL9:40 amLambert-St Louis
8h 49m
1 stop
SAN6:29 pmSan Diego

Best airlines flying from St. Louis to San Diego

Compare and see reviews for airlines that fly from St. Louis to San Diego with momondo
AirlineRatingFree CancellationPrice
Delta
PriceFrom $117
Free Cancellation
Rating
8.2
8.3

Boarding

8.5

Comfort

8.3

Crew

7.9

Entertainment

8.0

Food

Reviews

Cons: Wouldn't let us on the flight when there was plenty of time to get there. Manager was arrogant and slow - didn't care. Poor policies at that airport.

1 / 10
United Airlines
PriceFrom $117
Free Cancellation
Rating
6.8
7.2

Boarding

6.6

Comfort

7.5

Crew

6.6

Entertainment

6.1

Food

Reviews

Pros: Everything! From ticketing agent to all the crew on our flight back were awesome. Thank you!

1 / 10
Frontier
PriceFrom $118
Free Cancellation
Rating
6.0
6.4

Boarding

5.8

Comfort

6.7

Crew

4.9

Entertainment

5.2

Food

Reviews

Pros: Everything good

1 / 10
American Airlines
PriceFrom $122
Free Cancellation
Rating
7.2
7.4

Boarding

7.1

Comfort

7.8

Crew

7.0

Entertainment

6.8

Food

Reviews

Pros: Delayed flight no reasons seems like American Airlines don’t know what to do in these situations

Cons: I believe this airlines should have figured the answer to this question by now.

1 / 10
Alaska Airlines
PriceFrom $128
Free Cancellation
Rating
8.3
8.7

Boarding

8.4

Comfort

8.7

Crew

8.1

Entertainment

7.6

Food

Reviews

Pros: The comfort of the plane was great! Lots of room and very comfortable seating.

Cons: I found some members of staff to be a bit rude. When other passengers asked questions or did something wrong (that was a minor issue), one of the staff members in particular talked down to them and treated them like they were stupid.

1 / 10
Southwest
PriceFrom $281
Free Cancellation
Rating
8.3
8.5

Boarding

8.4

Comfort

8.7

Crew

7.5

Entertainment

7.7

Food

Reviews

Pros: The plane was new and the seats were nice.

1 / 10

Are airlines flying from Lambert-St Louis to San Diego offering flexible cancellation due to COVID-19?

To ease the stress of booking flights, some of our airline partners flying from Lambert-St Louis to San Diego are responding to the global pandemic. The following airlines may have a flexible cancellation policy to help accommodate travelers: Alaska Airlines, American Airlines, and United Airlines.

How far is Lambert-St Louis to San Diego by plane?

There are 1560.0 mi between Lambert-St Louis and San Diego. By plane, this route typically takes 8h 26m.

Can I fly to San Diego from Lambert-St Louis right now?

Information is based on travel restrictions for travel to San Diego within the United States

Most visitors from Lambert-St Louis need to provide a negative COVID-19 test result and/or quarantine to enter San Diego.

COVID-19 testing requirements
Visitors from Lambert-St Louis must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to San Diego.

Quarantine requirements
Visitors from Lambert-St Louis are not required to quarantine after entering San Diego.

Can I fly back to Lambert-St Louis from San Diego?

Returning to Lambert-St Louis from San Diego

COVID-19 testing requirements
Visitors from San Diego must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Lambert-St Louis.

Quarantine requirements
Visitors from San Diego are not required to quarantine after entering Lambert-St Louis.

If you are planning to travel to San Diego at this time, it is recommended that you stay up to date on current restrictions and follow proper safety measures while in public.

Flights from St. Louis to:

  • Round-trip
  • One-way
  • Multi-city
  • Economy
  • Premium Economy
  • Business
  • First
  • Multiple
Economy
  • Economy
  • Premium Economy
  • Business
  • First
Economy
  • Economy
  • Premium Economy
  • Business
  • First
Economy
  • Economy
  • Premium Economy
  • Business
  • First
Economy
  • Economy
  • Premium Economy
  • Business
  • First
Economy
  • Economy
  • Premium Economy
  • Business
  • First
Economy
  • Economy
  • Premium Economy
  • Business
  • First