Cheap flights from Chicago, IL to San Diego, CA

Flights starting at $81. 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, San Diego, CA - Old Town, San Diego, CA - La Jolla, McClellan–Palomar, or San Diego, CA - Seaport Village. 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 309 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 10.03 - Sat 16.03

AirlineSun 10.03Mon 11.03Tue 12.03Wed 13.03Thu 14.03Fri 15.03Sat 16.03
4444544
231233---

Weekly direct flights for Sun 17.03 - Sat 23.03

AirlineSun 17.03Mon 18.03Tue 19.03Wed 20.03Thu 21.03Fri 22.03Sat 23.03
4444454
11---2---32

Weekly direct flights for Sun 24.03 - Sat 30.03

AirlineSun 24.03Mon 25.03Tue 26.03Wed 27.03Thu 28.03Fri 29.03Sat 30.03
4444444
33---112---

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
5555555
2223332

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

Sunday
10 Mar
18°C13°C
17 Mar
21°C15°C
Monday
11 Mar
87%
16°C13°C
18 Mar
22°C15°C
Tuesday
12 Mar
87%
16°C13°C
19 Mar
22°C16°C
Wednesday
13 Mar
89%
17°C14°C
20 Mar
19°C15°C
Thursday
14 Mar
19°C13°C
21 Mar
17°C13°C
Friday
15 Mar
18°C13°C
22 Mar
16°C14°C
Saturday
16 Mar
20°C14°C
23 Mar
17°C12°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?
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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?
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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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