Cheap flights from Chicago, IL to San Diego, CA
Flights starting at $45. Choose between United Airlines, Alaska Airlines, or Spirit Airlines to find the best price.
Make your travel wishlist, we'll do the rest
Hidden deals
Kiwi-Code uncovers prices airlines don't want you to see.
Effortless booking
Use our flexible filters to tailor your search.
Travel hacking
Look out for the travel hack star icon for even cheaper fares.
Tips to know when travelling to San Diego
Search by stops
- Nonstop
- Up to 1 stop
- Up to 2 stops
Search by carrier
Search by price
Search by departure date
One-way trips
Updated:
Round trips
Updated:
Receive exclusive deals by email
By subscribing you agree to receive offers according to the conditions described in our Privacy Policy.
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 United Airlines, Alaska Airlines, and Spirit Airlines. Chicago and San Diego have 71 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 14.04 - Sat 20.04
| Airline | Sun 14.04 | Mon 15.04 | Tue 16.04 | Wed 17.04 | Thu 18.04 | Fri 19.04 | Sat 20.04 |
|---|---|---|---|---|---|---|---|
| 5 | 5 | 5 | 5 | 5 | 2 | 5 | |
| 1 | 3 | 1 | 1 | 2 | --- | 1 |
Weekly direct flights for Sun 21.04 - Sat 27.04
| Airline | Sun 21.04 | Mon 22.04 | Tue 23.04 | Wed 24.04 | Thu 25.04 | Fri 26.04 | Sat 27.04 |
|---|---|---|---|---|---|---|---|
| 5 | 5 | 5 | 5 | 5 | 5 | 5 | |
| 2 | 2 | 1 | 2 | --- | 2 | 3 |
Weekly direct flights for Sun 28.04 - Sat 04.05
| Airline | Sun 28.04 | Mon 29.04 | Tue 30.04 | Wed 01.05 | Thu 02.05 | Fri 03.05 | Sat 04.05 |
|---|---|---|---|---|---|---|---|
| 4 | 5 | 5 | 5 | 5 | 5 | 5 | |
| 3 | 3 | 2 | 3 | 3 | 3 | 3 |
Weekly direct flights for Sun 05.05 - Sat 11.05
| Airline | Sun 05.05 | Mon 06.05 | Tue 07.05 | Wed 08.05 | Thu 09.05 | Fri 10.05 | Sat 11.05 |
|---|---|---|---|---|---|---|---|
| 2 | 5 | 5 | 5 | 5 | 5 | 5 | |
| 2 | 3 | 3 | 3 | 3 | 3 | 3 |
Check-in for a flight from Chicago to San Diego
| Name | Carrier code | IATA Code | Passport needed during booking | Online check-in available |
|---|---|---|---|---|
| United Airlines | UAL | UA | Yes | No |
| Alaska Airlines | ASA | AS | No | Opens 24 days before flight Closes 1 hours before flight |
| Spirit Airlines | NKS | NK | No | Opens 24 days before flight Closes 1 hours before flight |
Weather in San Diego
Average Weather
| Month | Average monthly max temperature | Average monthly min temperature |
| January | 18°C | 10°C |
| February | 17°C | 10°C |
| March | 18°C | 11°C |
| April | 19°C | 12°C |
| May | 20°C | 14°C |
| June | 22°C | 16°C |
| July | 24°C | 18°C |
| August | 25°C | 19°C |
| September | 25°C | 19°C |
| October | 23°C | 16°C |
| November | 21°C | 13 °C |
| December | 17°C | 11°C |
14 day forecast
Frequently asked questions
Planning a trip? Thanks to our Virtual Interlining algorithm, we offer billions of route combinations between any A and any B in the world by plane, train, and bus. Find the cheapest routes and best deals for you, as well as the best dates on which to travel.
Explore alternative trips
Flights from Chicago
- Flights from Chicago to Las Vegas
- Flights from Chicago to Guadalajara
- Flights from Chicago to Denver
- Flights from Chicago to Orlando
- Flights from Chicago to Phoenix
- Flights from Chicago to Mexico City
- Flights from Chicago to Paris
- Flights from Chicago to Barcelona
- Flights from Chicago to Tampa
- Flights from Chicago to Miami
- Flights from Chicago to London
- Flights from Chicago to Rome
- Flights from Chicago to Los Angeles
- Flights from Chicago to Madrid
- Flights from Chicago to Fort Myers
- Flights from Chicago to Athens
- Flights from Chicago to San Francisco
- Flights from Chicago to New York
- Flights from Chicago to Austin
- Flights from Chicago to Atlanta
Flights to San Diego
- Flights from Denver to San Diego
- Flights from Las Vegas to San Diego
- Flights from Austin to San Diego
- Flights from Cincinnati to San Diego
- Flights from Philadelphia to San Diego
- Flights from New York to San Diego
- Flights from Phoenix to San Diego
- Flights from Charlotte to San Diego
- Flights from Washington, D.C. to San Diego
- Flights from Atlanta to San Diego
- Flights from Raleigh to San Diego
- Flights from Orlando to San Diego
- Flights from San Antonio to San Diego
- Flights from Detroit to San Diego
- Flights from Dallas to San Diego
- Flights from St. Louis to San Diego
- Flights from Cleveland to San Diego
- Flights from Salt Lake City to San Diego
- Flights from Minneapolis to San Diego
- Flights from London to San Diego
Popular routes
- Flights from Atlanta to Barcelona
- Flights from San Antonio to Guadalajara
- Flights from Boston to Zürich
- Flights from Tel Aviv to Bucharest
- Flights from Barcelona to Denver
- Flights from Manila to Cagayan de Oro
- Flights from Tampa to Minneapolis
- Flights from Ontario to Denver
- Flights from Oakland to Chicago
- Flights from New York to Atlanta
- Flights from New York to Miami
- Flights from Las Vegas to Chicago
- Flights from Austin to Cincinnati
Airports near Chicago
- O Hare International
- Chicago Midway International
- General Mitchell International
- Gerald R. Ford International
- Dane County Regional
- Fort Wayne International
- General Wayne A. Downing Peoria International
- South Bend International
- Chicago Rockford International
- Quad City International