Cheap flights from Chicago, IL to San Diego, CA

Flights starting at $44. Choose between Frontier Airlines, Spirit Airlines, or United Airlines to find the best price.

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Travelers usually depart from O Hare International, Chicago Midway International, or Chicago Rockford International when they travel from Chicago to San Diego. Book your trip to arrive at San Diego International, or McClellan–Palomar. The distance between Chicago and San Diego is 2771 km. The most popular airlines for this route are Frontier Airlines, Spirit Airlines, United Airlines, JetBlue Airways, and Alaska Airlines. Chicago and San Diego have 236 direct flights per week.

Weekly direct flights

Discover the top airlines offering direct flights from Chicago to San Diego in the next month. You’ll find the number of daily direct flights per airline in the table.

Weekly direct flights for Sun 31.03 - Sat 06.04

AirlineSun 31.03Mon 01.04Tue 02.04Wed 03.04Thu 04.04Fri 05.04Sat 06.04
5555556
21121------

Weekly direct flights for Sun 07.04 - Sat 13.04

AirlineSun 07.04Mon 08.04Tue 09.04Wed 10.04Thu 11.04Fri 12.04Sat 13.04
5555665
12122---1

Weekly direct flights for Sun 14.04 - Sat 20.04

AirlineSun 14.04Mon 15.04Tue 16.04Wed 17.04Thu 18.04Fri 19.04Sat 20.04
5555555
1311212

Weekly direct flights for Sun 21.04 - Sat 27.04

AirlineSun 21.04Mon 22.04Tue 23.04Wed 24.04Thu 25.04Fri 26.04Sat 27.04
5555555
1221121

Check-in for a flight from Chicago to San Diego

NameCarrier codeIATA CodePassport needed during bookingOnline check-in available
Frontier AirlinesFFTF9NoOpens 24 days before flight
Closes 1 hours before flight
Spirit AirlinesNKSNKNoOpens 24 days before flight
Closes 1 hours before flight
United AirlinesUALUAYesNo
JetBlue AirwaysJBUB6NoOpens 24 days before flight
Closes 2 hours before flight
Alaska AirlinesASAASNoOpens 24 days before flight
Closes 1 hours before flight

Weather in San Diego

Average Weather

MonthAverage monthly max temperatureAverage monthly min temperature
January18°C10°C
February17°C10°C
March18°C11°C
April19°C12°C
May20°C14°C
June22°C16°C
July24°C18°C
August25°C19°C
September25°C19°C
October23°C16°C
November21°C13°C
December17°C11°C
Hottest Month
25°C
August
Coldest month
10°C
February
Sunny days
344
days per year

14 day forecast

Thursday
4 Apr
95%
16°C12°C
11 Apr
21°C16°C
Friday
5 Apr
93%
13°C11°C
12 Apr
19°C15°C
Saturday
6 Apr
85%
15°C11°C
13 Apr
19°C14°C
Sunday
7 Apr
16°C11°C
14 Apr
19°C14°C
Monday
8 Apr
17°C13°C
15 Apr
20°C14°C
Tuesday
9 Apr
21°C14°C
16 Apr
21°C15°C
Wednesday
10 Apr
22°C16°C
17 Apr
18°C14°C

Frequently asked questions

How long does it take to travel from Chicago to San Diego?
What is the flight distance between Chicago and San Diego?
What airlines offer nonstop (direct) flights between Chicago and San Diego?
What are the most popular routes to and from Chicago?
What are the most popular routes to and from San Diego?
Which airports are there in Chicago?
What airports are near Chicago?
What airports are near San Diego?
Is it possible to combine flights, buses, and trains in one itinerary when traveling between Chicago and San Diego?
What is Virtual Interlining and how do I use it?
Which airlines fly between Chicago and San Diego?
When's the best time to travel between Chicago and San Diego?
What flights operate between Chicago and San Diego?
How many airports are there near Chicago?
How many airports are there near San Diego?
What time do nonstop (direct) flights between Chicago and San Diego depart?
What time do nonstop (direct) flights between Chicago and San Diego arrive?
What time do flights between Chicago and San Diego depart?
What time do flights between Chicago and San Diego arrive?

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