£103 Find Cheap Flights from Chicago to San Diego – Compare and Save

These are the earliest and latest flight times available from Chicago O'Hare Intl Airport to San Diego:

• Earliest: departs at 06:40 and lands at 11:19
• Latest: departs at 21:23 and lands at 02:02.

The flight takes about 4h 39m.

Only Economy class is available on flights from Chicago O'Hare Intl Airport to San Diego.

A direct flight from Chicago O'Hare Intl Airport to San Diego takes 4h 39m, covering 1,719 miles.

No, a passport is not required for this domestic route, but you will need another form of identification, such as a driving licence.

Return flights from Chicago O'Hare Intl Airport to San Diego range from £187 to £306, with an average of £248 over the past 12 months. Anything below £187 counts as a good deal.

Last-minute fares on this route (booked within two weeks of departure) run 42% above the £248 route average. Book 7 weeks before departure for the lowest fares.

On this route, stopover flights are cheaper than direct options on average. Stopover fares average £145 return via Minneapolis St Paul (MSP), compared with £249 for direct.

There is no standard. Checked bag policies vary by airline on this route. Most carriers charge £30–£75 for the first checked bag in Economy. Premium fares and elite status bookings typically include a free checked bag.

The Airbus A321-100/200 family is used most often on this route, operated mainly by American Airlines and United Airlines. Other aircraft seen on the route include Boeing 737-800 variants.

Morning is the busiest departure period on Chicago O'Hare Intl Airport to San Diego flights, with 46% leaving in that window. Afternoon departures account for 36%, Evening flights for 9%, and Night flights for 9%.

Three airlines offer in-flight Wi-Fi on Chicago O'Hare Intl Airport to San Diego flights:

• American Airlines
• Alaska Airlines
• JetBlue

Pricing varies by airline and fare class. Some plans are included with the ticket or loyalty programme, while others are paid add-ons priced by flight length.

One-way fares from Chicago O'Hare Intl Airport to San Diego are currently lower than usual. Average one-way flight prices are about £112, which is 27% below the typical average for this route.

San Diego Airport (SAN) hosts 5 major car hire companies, with daily rates starting from around £40 for economy cars. Top options include:

• Dollar
• Payless
• Europcar
• Thrifty
• Fox

Flights from Chicago O'Hare Intl Airport to San Diego usually depart from Chicago O'Hare Intl (ORD) and arrive at San Diego (SAN).

One-stop flights from Chicago O'Hare Intl Airport to San Diego most commonly connect through:

• Denver Intl (DEN) – 48% of one-stop connections
• Dallas/Fort Worth (DFW) – 15% of one-stop connections
• Salt Lake City (SLC) – 15% of one-stop connections
• Las Vegas Harry Reid Intl (LAS) – 13% of one-stop connections

Yes. Flexible dates can save you up to 12% on flights from Chicago O'Hare Intl Airport to San Diego. Saturday is the cheapest departure day at £238 return on average, while Sunday is the most expensive at £268, a difference of £31.

Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

4 airlines operate flights between Chicago O'Hare Intl Airport and San Diego. The airlines offering direct flights on this route include:

• American Airlines
• United Airlines
• Alaska Airlines
• Aer Lingus

Flying via Salt Lake City (SLC) gives the shortest average 1-stop total travel time of 6h 29m, compared to 6h 29m via Minneapolis St Paul (MSP) and 8h 20m via Atlanta Hartsfield-Jackson (ATL).

San Diego is 2 hours behind Chicago O'Hare Intl Airport (Pacific Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

Some of the most popular sights in San Diego are San Diego Convention Center, La Jolla Cove, and Hyatt Regency Mission Bay Spa and Marina. These are among the most viewed places in San Diego on KAYAK.

Among airlines operating Chicago O'Hare Intl Airport to San Diego flights:

• American Airlines: offers extra legroom; offers free seat selection
• United Airlines: offers extra legroom; offers free seat selection
• Alaska Airlines: offers extra legroom; offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

Here are some options for this route, based on selected ticket types and cabin classes:

• American Airlines: a cabin bag and a checked bag in Economy class
• United Airlines: a cabin bag and a checked bag in Economy class
• Alaska Airlines: a cabin bag and a checked bag in Economy class

Baggage allowance can vary by ticket type, cabin class, route, and airline, so always check the fare details before booking.