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Cheap flights from Chicago O'Hare Intl Airport to San Diego from $122

1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Chicago O'Hare Intl Airport to San Diego

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
6:30 am - 3:58 pmORD  Chicago O'Hare Intl-SAN San Diego
11h 28m1 stop Denver Intl
Frontier Logo
2:01 pm - 5:16 amSAN  San Diego-ORD Chicago O'Hare Intl
13h 15m2 stops Phoenix Sky Harbor Intl Las Vegas Harry Reid Intl
$253Frontier
Wed, Oct 21 - Mon, Oct 26
Frontier Logo
6:30 am - 11:51 pmORD  Chicago O'Hare Intl-SAN San Diego
19h 21m1 stop Denver Intl
Frontier Logo
6:25 am - 12:24 amSAN  San Diego-ORD Chicago O'Hare Intl
15h 59m1 stop Denver Intl
$253Frontier
Tue, Oct 6 - Wed, Oct 21
United Airlines Logo
10:45 am - 2:53 pmORD  Chicago O'Hare Intl-SAN San Diego
6h 08m1 stop Denver Intl
United Airlines Logo
4:10 pm - 12:03 amSAN  San Diego-ORD Chicago O'Hare Intl
5h 53m1 stop Denver Intl
$253United Airlines
Tue, Jan 12 - Sat, Jan 16
Multiple Airlines Logo
6:30 am - 11:57 pmORD  Chicago O'Hare Intl-SAN San Diego
19h 27m1 stop Denver Intl
Multiple Airlines Logo
7:02 am - 1:17 pmSAN  San Diego-ORD Chicago O'Hare Intl
4h 15mnonstop
$253Multiple Airlines
Wed, Nov 4 - Mon, Nov 9
Multiple Airlines Logo
7:49 pm - 10:27 pmORD  Chicago O'Hare Intl-SAN San Diego
4h 38mnonstop
Multiple Airlines Logo
6:25 am - 12:24 amSAN  San Diego-ORD Chicago O'Hare Intl
15h 59m1 stop Denver Intl
$253Multiple Airlines
Thu, Oct 22 - Sat, Oct 24
United Airlines Logo
7:00 am - 9:27 amORD  Chicago O'Hare Intl-SAN San Diego
4h 27mnonstop
United Airlines Logo
10:30 pm - 4:34 amSAN  San Diego-ORD Chicago O'Hare Intl
4h 04mnonstop
$255United Airlines
Wed, Nov 11 - Mon, Nov 16
Alaska Airlines Logo
7:20 am - 9:56 amORD  Chicago O'Hare Intl-SAN San Diego
4h 36mnonstop
Alaska Airlines Logo
5:46 pm - 11:59 pmSAN  San Diego-ORD Chicago O'Hare Intl
4h 13mnonstop
$255Alaska Airlines
Wed, Oct 14 - Thu, Oct 15
Alaska Airlines Logo
7:40 am - 10:19 amORD  Chicago O'Hare Intl-SAN San Diego
4h 39mnonstop
Alaska Airlines Logo
3:53 pm - 10:08 pmSAN  San Diego-ORD Chicago O'Hare Intl
4h 15mnonstop
$255Alaska Airlines
Mon, Feb 1 - Sat, Feb 6
American Airlines Logo
6:45 am - 9:16 amORD  Chicago O'Hare Intl-SAN San Diego
4h 31mnonstop
American Airlines Logo
10:06 am - 4:29 pmSAN  San Diego-ORD Chicago O'Hare Intl
4h 23mnonstop
$257American Airlines
Wed, Oct 21 - Wed, Oct 28
American Airlines Logo
6:45 am - 9:16 amORD  Chicago O'Hare Intl-SAN San Diego
4h 31mnonstop
American Airlines Logo
7:53 am - 2:15 pmSAN  San Diego-ORD Chicago O'Hare Intl
4h 22mnonstop
$257American Airlines
Sat, Oct 17 - Tue, Oct 20

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Frontier flights from Chicago O'Hare Intl Airport to San Diego

Our best Frontier deals on Chicago O'Hare Intl Airport to San Diego flight tickets
Frontier
Oct 21
ORD6:30 amChicago O'Hare Intl
11h 28m
1 stop
SAN3:58 pmSan Diego
Oct 26
SAN2:01 pmSan Diego
13h 15m
2 stops
ORD5:16 amChicago O'Hare Intl
$253
Frontier
Nov 12
ORD6:30 amChicago O'Hare Intl
19h 27m
1 stop
SAN11:57 pmSan Diego
Nov 15
SAN6:25 amSan Diego
15h 56m
1 stop
ORD12:21 amChicago O'Hare Intl
$254
Frontier
Oct 19
ORD3:30 pmChicago O'Hare Intl
6h 19m
1 stop
SAN7:49 pmSan Diego
Oct 26
SAN8:34 pmSan Diego
25h 47m
2 stops
ORD12:21 amChicago O'Hare Intl
$256

Alaska Airlines flights from Chicago O'Hare Intl Airport to San Diego

Our best Alaska Airlines deals on Chicago O'Hare Intl Airport to San Diego flight tickets
Alaska Airlines
Oct 29
ORD7:49 pmChicago O'Hare Intl
4h 38m
SAN10:27 pmSan Diego
Nov 3
SAN7:02 amSan Diego
4h 15m
ORD1:17 pmChicago O'Hare Intl
$255
Alaska Airlines
Oct 21
ORD7:20 amChicago O'Hare Intl
4h 36m
SAN9:56 amSan Diego
Oct 27
SAN12:35 pmSan Diego
4h 18m
ORD6:53 pmChicago O'Hare Intl
$257
Alaska Airlines
Oct 9
ORD7:49 pmChicago O'Hare Intl
4h 38m
SAN10:27 pmSan Diego
Oct 17
SAN7:00 amSan Diego
4h 25m
ORD1:25 pmChicago O'Hare Intl
$266

momondo Fare Finder

 
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to San Diego that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoSan Diego

ORD Chicago O'Hare Intl - SAN San Diego

ORDSAN

Chicago O'Hare Intl

Wed 10/21

6:30 am-3:58 pm

1 stop11h 28m

San Diego

Mon 10/26

2:01 pm-5:16 am

2 stops13h 15m

$253

ChicagoSan Diego

ORD Chicago O'Hare Intl - SAN San Diego

ORDSAN

Chicago O'Hare Intl

Tue 10/6

6:30 am-11:51 pm

1 stop19h 21m

San Diego

Wed 10/21

6:25 am-12:24 am

1 stop15h 59m

$253

ChicagoSan Diego

ORD Chicago O'Hare Intl - SAN San Diego

ORDSAN

Chicago O'Hare Intl

Tue 1/12

10:45 am-2:53 pm

1 stop6h 08m

San Diego

Sat 1/16

4:10 pm-12:03 am

1 stop5h 53m

$253

ChicagoSan Diego

ORD Chicago O'Hare Intl - SAN San Diego

ORDSAN

Chicago O'Hare Intl

Wed 11/4

6:30 am-11:57 pm

1 stop19h 27m

San Diego

Mon 11/9

7:02 am-1:17 pm

Nonstop4h 15m

$253

ChicagoSan Diego

ORD Chicago O'Hare Intl - SAN San Diego

ORDSAN

Chicago O'Hare Intl

Thu 10/22

7:49 pm-10:27 pm

Nonstop4h 38m

San Diego

Sat 10/24

6:25 am-12:24 am

1 stop15h 59m

$253
Quickest round-trip

ChicagoSan Diego

ORD Chicago O'Hare Intl - SAN San Diego

ORDSAN

Chicago O'Hare Intl

Wed 11/11

7:00 am-9:27 am

Nonstop4h 27m

San Diego

Mon 11/16

10:30 pm-4:34 am

Nonstop4h 04m

$255

ChicagoSan Diego

ORD Chicago O'Hare Intl - SAN San Diego

ORDSAN

Chicago O'Hare Intl

Wed 10/14

7:20 am-9:56 am

Nonstop4h 36m

San Diego

Thu 10/15

5:46 pm-11:59 pm

Nonstop4h 13m

$255

ChicagoSan Diego

ORD Chicago O'Hare Intl - SAN San Diego

ORDSAN

Chicago O'Hare Intl

Mon 2/1

7:40 am-10:19 am

Nonstop4h 39m

San Diego

Sat 2/6

3:53 pm-10:08 pm

Nonstop4h 15m

$255

ChicagoSan Diego

ORD Chicago O'Hare Intl - SAN San Diego

ORDSAN

Chicago O'Hare Intl

Wed 10/21

6:45 am-9:16 am

Nonstop4h 31m

San Diego

Wed 10/28

10:06 am-4:29 pm

Nonstop4h 23m

$257

ChicagoSan Diego

ORD Chicago O'Hare Intl - SAN San Diego

ORDSAN

Chicago O'Hare Intl

Sat 10/17

6:45 am-9:16 am

Nonstop4h 31m

San Diego

Tue 10/20

7:53 am-2:15 pm

Nonstop4h 22m

$257

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San Diego from

How to get the cheapest flight ticket from Chicago O'Hare Intl Airport to San Diego

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Chicago O'Hare Intl Airport and San Diego?

Prices are currently low for flights on this route.

Typical prices usually range from $262 to $434.
The lowest price recently found on this route was $253.

What is the cheapest month to fly to San Diego?

If you are unable to visit San Diego during the month of February, then departing from Chicago O'Hare Intl Airport during the month January is also very affordable. Most momondo users find prices during this month for around $263.

What is the cheapest day to depart on your flight to San Diego?

The cheapest day to depart from Chicago O'Hare Intl Airport to San Diego is on a Thursday. Travelers who choose to depart for San Diego on a Thursday will often find tickets for as low as $334. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around $365. These prices are subject to change though, so be sure to set up a Price Alert for flights to San Diego.

What is the cheapest time of day to depart on your flight to San Diego?

The cheapest time of day to fly to San Diego is in the evening when flights can be purchased for as low as $304. Flights at noon are often more expensive with an average ticket price of $358.

What is the cheapest Chicago O'Hare Intl to San Diego flight route?

Fly from Chicago O'Hare Intl to San Diego for the best Chicago O'Hare Intl - San Diego flight prices

How far in advance should I book a flight from Chicago O'Hare Intl Airport to San Diego?

You are more likely to see cheaper flights to San Diego from Chicago O'Hare Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to San Diego for around $316 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Diego from Chicago O'Hare Intl Airport for as low as $268 on momondo.

What cabin class options are available on Chicago O'Hare Intl Airport to San Diego flights?

There are 4 cabin classes available to choose from on Chicago O'Hare Intl Airport to San Diego flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Chicago O'Hare Intl Airport to San Diego flights?

You could potentially save up to 45% on your flight if you consider stops on a Chicago O'Hare Intl Airport to San Diego flight.

How have Chicago O'Hare Intl Airport to San Diego flight prices changed over time?

As of September 2026, prices for Chicago O'Hare Intl Airport to San Diego flights are approximately 112% more expensive when compared to flights at the same time last year.

When to book flights from Chicago O'Hare Intl Airport to San Diego

Are you open to changing your travel dates? Check out the ideal times to fly from Chicago O'Hare Intl Airport to San Diego according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Chicago O'Hare Intl Airport to San Diego (ORD to SAN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago O'Hare Intl Airport to San Diego

Best Price Found

$122

Fastest flight time

4h 12m

Direct flights

Every day

Airports in San Diego

1 airport
The best one-way flight to San Diego from Chicago O'Hare Intl Airport in the past 72 hours is $122. The best round-trip flight deal from Chicago O'Hare Intl Airport to San Diego found on momondo in the last 72 hours is $253.
The fastest flight from Chicago O'Hare Intl Airport to San Diego takes 4h 12m
Direct flights go from Chicago O'Hare Intl Airport to San Diego every day.
There is 1 airport in San Diego. From Chicago O'Hare Intl Airport there are direct flights to San Diego (SAN).
Search flight deals

Frequently asked questions about flying from Chicago O'Hare Intl Airport to San Diego

  • How far is Chicago O'Hare Intl to San Diego by plane?

    San Diego is 1717.8 mi away from Chicago O'Hare Intl. In terms of flight time, this usually takes a little over 4h 12m.

  • When did momondo last update prices for flights from Chicago O'Hare Intl Airport to San Diego Airport?

    Prices for flights from Chicago O'Hare Intl Airport to San Diego Airport refresh daily.

  • How many operators does momondo search for flights from Chicago O'Hare Intl Airport to San Diego Airport?

  • How old do you have to be to fly from Chicago O'Hare Intl Airport to San Diego Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chicago O'Hare Intl Airport to San Diego Airport.

  • What documentation or ID do you need to fly to San Diego Airport?

    The required travel and health documents for your San Diego Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at San Diego Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Chicago O'Hare Intl Airport to San Diego?

  • What is the most popular airline from Chicago O'Hare Intl Airport to San Diego?

Best airlines flying from Chicago O'Hare Intl Airport to San Diego

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to San Diego with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $126Free CancellationRating
5.6
2,583 reviews
Search Frontier flights
Hawaiian AirlinesPriceFrom $153Free CancellationRating
7.8
2,811 reviews
Search Hawaiian Airlines flights
Alaska AirlinesPriceFrom $156Free CancellationRating
7.9
12,953 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $160Free CancellationRating
7.4
10,225 reviews
Search United Airlines flights
American AirlinesPriceFrom $167Free CancellationRating
7.0
12,082 reviews
Search American Airlines flights
DeltaPriceFrom $186Free CancellationRating
7.8
8,595 reviews
Search Delta flights

  • Alaska Airlines Flights From Chicago O'Hare Intl Airport to San Diego

    Across 4 Alaska Airlines flights from Chicago O'Hare Intl Airport to San Diego this week, the average price was $312, with the best Alaska Airlines deals starting from $156 round-trip. 12,953 users have rated Alaska Airlines on momondo, with an average score of 7.9/10.

  • United Airlines Flights From Chicago O'Hare Intl Airport to San Diego

    United Airlines is also a popular choice for this route. United Airlines flight deals for Chicago O'Hare Intl Airport to San Diego start from as low as $160 round-trip, depending on your selected dates, with average United Airlines deals seen on momondo around $344. United Airlines operates 16 flights to San Diego from Chicago O'Hare Intl Airport in an average week. Users have rated it 7.4/10 across 10,225 reviews.

Traveling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
Chula Vista
El Cajon
Coronado
National City
La Mesa
Julian
Poway
San Ysidro
Imperial Beach
Santee
Alpine
Lemon Grove
Borrego Springs

Why use momondo?

Why should I use momondo to find a flight deal from Chicago to San Diego?

Finding the right flight to San Diego from Chicago is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to San Diego quick and easy, saving you time and money.

Can I find flights from Chicago to San Diego with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Chicago to San Diego flights to just show those with flexible booking policies.

How can momondo help me find flights from Chicago to San Diego?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to San Diego from Chicago.

I’m not ready to book a flight from Chicago to San Diego right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Chicago to San Diego flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your San Diego trip

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