Southwest® flights from San Diego to Chicago (O'Hare) from $98

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Low fares from San Diego to Chicago (O'Hare)

$

San Diego (SAN)to

Chicago (Midway) (MDW)
Depart: 01/21/2026

One-way

Basic

From
$76
Seen: 10 hrs ago

San Diego (SAN)to

Chicago (Midway) (MDW)
Depart: 02/11/2026

One-way

Basic

From
$76
Seen: 8 hrs ago

San Diego (SAN)to

Chicago (Midway) (MDW)
Depart: 01/27/2026

One-way

Basic

From
$76
Seen: 12 minutes ago

San Diego (SAN)to

Chicago (Midway) (MDW)
Depart: 02/04/2026

One-way

Basic

From
$76
Seen: 19 minutes ago

San Diego (SAN)to

Chicago (Midway) (MDW)
Depart: 03/07/2026

One-way

Basic

From
$79
Seen: 11 hrs ago

San Diego (SAN)to

Chicago (Midway) (MDW)
Depart: 02/03/2026

One-way

Basic

From
$79
Seen: 9 hrs ago
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Explore flights from San Diego to Chicago (O'Hare)

Travel tips for your next Southwest flight

Mobile boarding pass on phone screen

How to board the plane earlier on open seating flights departing on or before January 26, 2026:

Southwest seats are first come, first served based on check-in order. But there are ways to board the plane earlier!

Enjoy movies, sips, and snacks during your flight

Enjoy movies, sips, and snacks during your flight.

Take advantage of inflight entertainment with free movies4, free live TV5, free texting6, and $8 inflight Internet7.

We also offer free sodas, coffee, and snacks8learn more about the inflight food and beverage experience.

Make the most of our Rapid Rewards Program

Make the most of our Rapid Rewards® Program.

Rapid Rewards Members can redeem their points for flights, hotel stays, rental cars, gift cards, and more. And your points never expire!

Flight Details

Departing from:
San Diego International Airport
Arriving at:
O'Hare International Airport
Distance:
1723 miles

Route Information

114 Weekly flights

† Weekly flights based on DOT published scheduled average flights Monday through Sunday between 9/1/2025 and 9/30/2025. Note: route may not operate every day of the week.

‡ Nonstop flights based on DOT published scheduled average flights Monday through Sunday between 9/1/2025 and 9/30/2025.

Explore Chicago (O'Hare)

Year-round, Chicago is a wonderful place to visit. Midwesterners have a keen way to adapt to the long winters. In Chicago, that means eating lots of deep-dish pizza and other delicious foods available around the city as well as enjoying brewery tours and live shows. Summertime in Chicago makes the cold winters worth it: outdoor festivals and block parties fill up nearly every week and weekend in every neighborhood in the city. Consider one of the neighborhood festivals where local restaurants can share their delicious cuisine, artisans share jewelry and other works of art, and musicians come from around the world to spread happiness to Chicagoans and its visitors. Some of the most famous music festivals occur during the warmer months, including the Chicago Jazz Festival, which takes place in Millennium Park and features world-renown musicians from around the globe.

In addition to music festivals, Chicago is home to a number of famous music venues. The city is the birthplace of its own form of Blues, thanks to musicians like Muddy Waters who emigrated from the South and brought the Delta Blues to the City of Big Shoulders. Today, you can find a few great Blues clubs in the city where local and national musicians play. There are great opportunities to find a range of other genres of music, too, at places like the Vic Theatre, the Aragon Ballroom, the Riviera Theatre, and the Chicago Theatre, to name a few.

Questions we hear the most

There are 114 weekly flights from San Diego to Chicago (O'Hare) on Southwest Airlines.
To find the lowest fares by day and time to fly San Diego to Chicago (O'Hare) with Southwest, check out our Low Fare Calendar.
You can rent a car at O'Hare International Airport book yours with your flight.
Yes! Flights from San Diego to Chicago (O'Hare)—or from here or there to anywhere—can be changed with no change fees. Fare difference may apply.
Check the status of your upcoming Southwest flight.
Check out the Southwest Airlines® Help Center for answers about everything Southwest.

Popular Flights from San Diego

1EarlyBird Check-In® pricing starts at $15 one-way, and is subject to availability. Pricing may vary based on the popularity and length of each (one-way) flight. Please see optional travel charges for more details.
2Upgraded boarding prices and benefits are per eligible segment. Flights must be within 24 hours of departure to be eligible for upgraded boarding.
3Where available. Available only on WiFi-enabled aircraft. Limited-time offer.
4Due to licensing restrictions, on WiFi-enabled international flights, free live TV and iHeartRadio may not be available for the full duration of flight.
5Texting only allows access to iMessage and WhatsApp (which must be downloaded and activated before connecting to SouthwestWiFi).
6Internet access for $8 per device from takeoff to landing. Price is subject to change. May not be available for the full duration of flight. In order to provide a top-notch Internet experience, we prohibit access to certain high-bandwidth applications and websites. We also prohibit access to certain obscene or offensive content.
7Flights traveling 175 miles or less will have only water available. Complimentary snacks are served on flights over 175 miles. If you’re flying between Hawaii and the continental U.S., you’ll have even more snacks to choose from.