Cheap flights from San Diego, CA to Chicago, IL

Flights starting at £53. Choose between Frontier Airlines, Spirit Airlines, or Allegiant Air to find the best price.

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Travelers usually depart from San Diego International, or McClellan–Palomar when they travel from San Diego to Chicago. Book your trip to arrive at O Hare International, Chicago Midway International, or Chicago Rockford International. The distance between San Diego and Chicago is 2771 km. The most popular airlines for this route are Frontier Airlines, Spirit Airlines, Allegiant Air, Alaska Airlines, and United Airlines. San Diego and Chicago have 328 direct flights per week.

Weekly direct flights

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

Weekly direct flights for Mon 18.03 - Sun 24.03

AirlineMon 18.03Tue 19.03Wed 20.03Thu 21.03Fri 22.03Sat 23.03Sun 24.03
4424444
111312---

Weekly direct flights for Mon 25.03 - Sun 31.03

AirlineMon 25.03Tue 26.03Wed 27.03Thu 28.03Fri 29.03Sat 30.03Sun 31.03
4444445
32321------

Weekly direct flights for Mon 01.04 - Sun 07.04

AirlineMon 01.04Tue 02.04Wed 03.04Thu 04.04Fri 05.04Sat 06.04Sun 07.04
5565555
------21323

Weekly direct flights for Mon 08.04 - Sun 14.04

AirlineMon 08.04Tue 09.04Wed 10.04Thu 11.04Fri 12.04Sat 13.04Sun 14.04
5556555
2---33333

Check-in for a flight from San Diego to Chicago

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
Allegiant AirAAYG4NoOpens 24 days before flight
Closes 1 hours before flight
Alaska AirlinesASAASNoOpens 24 days before flight
Closes 1 hours before flight
United AirlinesUALUAYesNo

Chicago travel tips

1) Try the Chicago-style hot dog — you'll love it!
2) Bring warm clothes with you in Chicago, even if you are planning a summer trip
3) Be impressed by the dimensions of one of the tallest skyscrapers in Chicago

Weather in Chicago

Average Weather

MonthAverage monthly max temperatureAverage monthly min temperature
January0°C-6°C
February0°C-5°C
March5°C0°C
April10°C4°C
May17°C10°C
June22°C16°C
July25°C20°C
August25°C19°C
September22°C16°C
October15°C10°C
November8°C3°C
December2°C-1°C
Hottest Month
25°C
July
Coldest month
-6°C
January
Sunny days
253
days per year
Snow days
17
days per year

14 day forecast

Thursday
21 Mar
3°C-1°C
28 Mar
11°C1°C
Friday
22 Mar
93%
5°C1°C
29 Mar
89%
8°C6°C
Saturday
23 Mar
83%
2°C0°C
30 Mar
79%
5°C2°C
Sunday
24 Mar
7°C0°C
31 Mar
4°C0°C
Monday
25 Mar
83%
11°C5°C
1 Apr
10°C2°C
Tuesday
26 Mar
83%
8°C4°C
2 Apr
78%
10°C6°C
Wednesday
27 Mar
7°C-2°C
3 Apr
6°C-2°C

Frequently asked questions

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

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