Cheap flights from Chicago to San Diego (CHI - SAN)

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The best prices from Chicago to San Diego are usually found in August or July, booked 16 days in advance, depart on a Tuesday or Wednesday and return on a Thursday

How to find the cheapest flight from
Chicago (CHI) to San Diego (SAN)

CHI - SAN
Price
$90 - $324
SAN
Temperature
66.2 - 80.6 °F
SAN
Rainfall
0 - 2.8 inches

Popular in

December

High demand for flights, 33% potential price rise

Cheapest in

August

Best time to find cheap flights, 59% potential price drop

Round-trip from

$90

From Chicago to San Diego

One-way from

$30

One-way flight from Chicago to San Diego

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest day to fly round-trip from Chicago to San Diego?

Saturday flights are found to be more expensive to fly from Chicago to San Diego. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to San Diego.

How far in advance should I book a flight from Chicago to San Diego?

Travelers have found it’s best to book a flight 17 days in advance to save up to 27% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 17 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Chicago to San Diego 1-2 weeks in advance for as low as $73, or $98 for flights within the next 24 hours.

What is the cheapest month to fly from Chicago to San Diego?

The best pricing can be found in the month of July. Prices to San Diego from Chicago average $80. You can even find prices in July for less than $80, as users have found deals to San Diego from as low as $44. The month of December appears to be one of the more expensive times to travel to San Diego from Chicago. Flying in the targeted month can save you up to 33%.

When is the cheapest time to fly from Chicago to San Diego (CHI - SAN)?

It’s optimal to fly from Chicago to San Diego at noon. By choosing this option you can save up to 19% on the cost of your flight, compared to a flight in the afternoon.

Cheap flights from Chicago to San Diego in March, April 2021

17 Apr - 24 Apr
$38pp
ORD
Chicago O'Hare Intl
Spirit Airlines
Non-Stop
SAN
San Diego
SAN
San Diego
Spirit Airlines
Non-Stop
ORD
Chicago O'Hare Intl
22 Apr - 26 Apr
$39pp
ORD
Chicago O'Hare Intl
Spirit Airlines
Non-Stop
SAN
San Diego
SAN
San Diego
Spirit Airlines
Non-Stop
ORD
Chicago O'Hare Intl
17 Apr - 24 Apr
$40pp
ORD
Chicago O'Hare Intl
Spirit Airlines
Non-Stop
SAN
San Diego
SAN
San Diego
Spirit Airlines
Non-Stop
ORD
Chicago O'Hare Intl

Chicago to San Diego 2021 flight deals

17 Apr - 24 Apr
$38pp
ORD
Chicago O'Hare Intl
Spirit Airlines
Non-Stop
SAN
San Diego
SAN
San Diego
Spirit Airlines
Non-Stop
ORD
Chicago O'Hare Intl
22 Apr - 26 Apr
$39pp
ORD
Chicago O'Hare Intl
Spirit Airlines
Non-Stop
SAN
San Diego
SAN
San Diego
Spirit Airlines
Non-Stop
ORD
Chicago O'Hare Intl
17 Apr - 24 Apr
$40pp
ORD
Chicago O'Hare Intl
Spirit Airlines
Non-Stop
SAN
San Diego
SAN
San Diego
Spirit Airlines
Non-Stop
ORD
Chicago O'Hare Intl

Non-stop flights to San Diego from Chicago

17 Apr - 24 Apr
$38pp
ORD
Chicago O'Hare Intl
Spirit Airlines
Non-Stop
SAN
San Diego
SAN
San Diego
Spirit Airlines
Non-Stop
ORD
Chicago O'Hare Intl
22 Apr - 26 Apr
$39pp
ORD
Chicago O'Hare Intl
Spirit Airlines
Non-Stop
SAN
San Diego
SAN
San Diego
Spirit Airlines
Non-Stop
ORD
Chicago O'Hare Intl
17 Apr - 24 Apr
$40pp
ORD
Chicago O'Hare Intl
Spirit Airlines
Non-Stop
SAN
San Diego
SAN
San Diego
Spirit Airlines
Non-Stop
ORD
Chicago O'Hare Intl

Last minute flights from Chicago to San Diego

9 Mar - 11 Mar
$74pp
ORD
Chicago O'Hare Intl
Multiple Airlines
 
1 STOP
SAN
San Diego
SAN
San Diego
Spirit Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
9 Mar - 17 Mar
$83pp
ORD
Chicago O'Hare Intl
Multiple Airlines
Non-Stop
SAN
San Diego
SAN
San Diego
Spirit Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
8 Mar - 11 Mar
$84pp
ORD
Chicago O'Hare Intl
Spirit Airlines
 
1 STOP
SAN
San Diego
SAN
San Diego
Spirit Airlines
 
1 STOP
ORD
Chicago O'Hare Intl

One-way flights to San Diego from Chicago

6:00 am - 8:25 am
American Airlines
Nonstop
4h 25m
ORD - SAN
American Airlines
4:00 am - 6:30 am
United Airlines
Nonstop
4h 30m
ORD - SAN
United Airlines
$49
United
6:21 am - 3:23 pm
Spirit Airlines
1 Stop
11h 02m
ORD - SAN
Spirit Airlines
$51
mytrip.com

Related info for your journey

Flight FAQs

From Chicago to San Diego

Are flight prices decreasing from Chicago to San Diego due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Chicago and San Diego for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

What safety measures are being taken by airlines flying from Chicago to San Diego to control the spread of COVID-19?

Airlines globally have implemented additional safety measures to accommodate you. Alaska Airlines and Delta are some airlines that have done so. Airline carriers are regularly disinfecting and sanitizing their aircraft. Masks are provided and are mandatory while on board. Pre-flight testing for symptoms and antibodies, alongside socially distanced seating (for a limited time) will work towards keeping travelers safer while flying from Chicago to San Diego. Policies will vary by airline.

Which airlines flying from Chicago to San Diego have flexible cancellations due to COVID-19?

Spirit Airlines, United Airlines, and American Airlines are some of the carriers that may have flexible cancellation policies. You can use our site to filter for other airlines that may also have this kind of flexibility.

Can I find flights from Chicago to San Diego for under $100 on Cheapflights?

Yes, there are multiple flights from Chicago to San Diego for under $100. The cheapest flight booked recently is on Spirit Airlines for just $38, but on average you can expect to pay $48.

Are there nonstop flights from Chicago to San Diego for under $100 on Cheapflights?

Cheapflights has at least 20 direct flights from Chicago to San Diego under $100. A good price for a nonstop flight from Chicago to San Diego is less than $48.

Are there last-minute flights available from Chicago to San Diego for under $100?

There are currently 20+ open flights from Chicago to San Diego within the next 7 days for less than $100.

What days are nonstop flights available from Chicago to San Diego?

You can find nonstop flights on the following days: Monday, Wednesday, Saturday.

How many flights depart from Chicago to San Diego on average per day?

10 flight departures from Chicago to San Diego per day on average.
Morning (6am - Noon) - 60% of flight departures
Afternoon (Noon - 6pm) - 30% of flight departures
Evening (6pm - Midnight) - 10% of flight departures

Is Chicago weather warmer or cooler than San Diego?

Expect the weather to be around 84 °F on average in July. As the temperature peaks, try to get your plans done early, as flight price and availability will have an impact on your travels. The climate in San Diego is generally colder than in Chicago.

How long is the flight from Chicago to San Diego?

Departing from Chicago to San Diego will take you 4h 21m. The distance from Chicago to San Diego is about 1729 mi. Both multi-stop and nonstop flights can be found to your destination and back.

What are the cheapest airlines flying from Chicago to San Diego round-trip?

Flying on Spirit Airlines is currently your cheapest option to San Diego, with prices starting at $38. Another option worth looking into is American Airlines, starting at $59 round trip. Spirit Airlines is currently priced 82% below the average price you’ll pay for this route.

What are the cheapest airlines to fly from Chicago to San Diego one-way?

$18 is the cheapest one-way deal found within the past few days, from Spirit Airlines. You may also be able to find cheap deals on American Airlines and Frontier, with prices starting from $30 and $39, respectively.

Alternative routes for Chicago to San Diego

Destination information for San Diego

Flight duration
4h 09m
Average temperature for March in San Diego
68.0 °F
Avg rainfall for March in San Diego
2.7 ″

Airports servicing Chicago

Chicago Midway (MDW)
Rockford (RFD)

Airports servicing San Diego

Top 7 airlines flying from Chicago to San Diego

Airline Cheapest Average Flexibility On-time COVID-19 safety
Frontier
$74 $227 No cancel fee 62%
Spirit Airlines
$92 $247 No cancel fee 65%
American Airlines
$101 $287 No cancel fee 71%
Delta
$122 $326 No cancel fee N/A
United Airlines
$114 $348 No cancel fee 69%
Alaska Airlines
$134 $427 No cancel fee 75%
Southwest
$204 $519 No cancel fee 63%

Hourly flight availability from Chicago to San Diego

Afternoon Noon to 6 PM 51% of CHI to SAN departures
Morning 6 AM to noon 26% of CHI to SAN departures
Evening 6 PM to midnight 22% of CHI to SAN departures
Early morning Midnight to 6 AM 1% of CHI to SAN departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from Chicago to San Diego
Sunday
0 flights
Monday
3 daily flights
Tuesday
13 daily flights
Wednesday
11 daily flights
Thursday
2 daily flights
Friday
2 daily flights
Saturday
2 daily flights
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