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$79+ Cheap flights from O'Hare Intl (ORD) to San Diego (SAN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/11. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SAN
Mar 13 — Mar 201
Fri 3/13
Fri 3/20
1 adult, Economy
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Cheapflights Tip: The best prices from Chicago O'Hare Intl to San Diego are usually found in October or September, booked 71 days in advance, depart on a Saturday or Friday and return on a Thursday

Cheap flight deals from O'Hare Intl to San Diego

Cheapest flights from O'Hare Intl to San Diego
Explore the most affordable flight options available from O'Hare Intl to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 11, 2026.

This American Airlines deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/48:00 pm
ORD
-
SAN
Nonstop4h 34m
American Airlines
Sun 3/810:35 pm
SAN
-
ORD
Nonstop4h 04m
American Airlines
Deal found 2/9$167
This Kiwi.com deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/189:18 pm
ORD
-
SAN
1 stop22h 22m
Frontier
Sat 4/2511:42 am
SAN
-
ORD
1 stop20h 08m
Frontier
Deal found 2/10$168
This WAYA deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/54:16 pm
ORD
-
SAN
1 stop9h 52m
Multiple Airlines
Mon 3/95:42 pm
SAN
-
ORD
Nonstop4h 17m
Multiple Airlines
Deal found 2/10$169
This Kiwi.com deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/94:44 pm
ORD
-
SAN
2 stops30h 30m
Frontier
Mon 3/166:25 am
SAN
-
ORD
1 stop16h 32m
Frontier
Deal found 2/9$170
This WAYA deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/123:07 pm
ORD
-
SAN
Nonstop4h 45m
Multiple Airlines
Mon 3/169:58 pm
SAN
-
ORD
1 stop6h 10m
Multiple Airlines
Deal found 2/10$171
This WAYA deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/48:10 am
ORD
-
SAN
1 stop6h 35m
Multiple Airlines
Sat 3/75:42 pm
SAN
-
ORD
Nonstop4h 17m
Multiple Airlines
Deal found 2/9$172
This United Airlines deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/37:05 am
ORD
-
SAN
Nonstop4h 37m
United Airlines
Wed 5/67:40 pm
SAN
-
ORD
1 stop7h 45m
United Airlines
Deal found 2/10$173
This WAYA deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/48:10 am
ORD
-
SAN
1 stop6h 35m
Multiple Airlines
Mon 3/99:58 pm
SAN
-
ORD
1 stop6h 10m
Multiple Airlines
Deal found 2/9$174
This United Airlines deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/117:55 pm
ORD
-
SAN
Nonstop4h 45m
United Airlines
Tue 3/1712:55 pm
SAN
-
ORD
1 stop6h 34m
United Airlines
Deal found 2/8$176
This Alaska Airlines deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/127:40 am
ORD
-
SAN
Nonstop4h 49m
Alaska Airlines
Thu 3/197:55 am
SAN
-
ORD
Nonstop4h 26m
Alaska Airlines
Deal found 2/9$177
This American Airlines deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/125:49 pm
ORD
-
SAN
Nonstop4h 31m
American Airlines
Wed 3/186:20 am
SAN
-
ORD
Nonstop4h 19m
American Airlines
Deal found 2/9$178

Find flight deals from O'Hare Intl to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from O'Hare Intl (ORD) to San Diego (SAN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$167
(American Airlines)

One-way from

$79
(United Airlines)

Popular in

April

Cheapest in

October

Average price

$252

Good round-trip deal

$201 or less

Good one-way deal

$107 or less
Provider with most accurate pricing for Chicago O'Hare Intl-San Diego flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago O'Hare Intl-San Diego flights.
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From Chicago O'Hare Intl to San Diego
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One-way flight from Chicago O'Hare Intl to San Diego
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($75 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals
Price to beat on a round-trip flight from Chicago O'Hare Intl to San Diego.
Search Deals
Price to beat on a one-way flight from Chicago O'Hare Intl to San Diego.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from O'Hare Intl to San Diego that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 11, 2026.
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

O'Hare Intl

Fly to

San Diego

Route

Depart

Return

Price

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Thu 3/12

3:07 pm-5:52 pm

Nonstop4h 45m

San Diego

Tue 3/17

5:42 pm-11:59 pm

Nonstop4h 17m

$167

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Wed 4/22

7:00 am-9:40 am

Nonstop4h 40m

San Diego

Mon 4/27

4:49 pm-10:59 pm

Nonstop4h 10m

$167

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Mon 4/13

2:40 pm-8:12 pm

1 stop7h 32m

San Diego

Sat 4/18

10:30 pm-4:35 am

Nonstop4h 05m

$176

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Wed 3/11

7:55 pm-10:40 pm

Nonstop4h 45m

San Diego

Tue 3/17

12:55 pm-9:29 pm

1 stop6h 34m

$176

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Thu 3/12

7:05 am-9:47 am

Nonstop4h 42m

San Diego

Mon 3/16

5:00 pm-10:59 pm

Nonstop3h 59m

$177

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Tue 3/17

4:20 pm-7:00 pm

Nonstop4h 40m

San Diego

Fri 3/20

8:50 pm-6:20 am

1 stop7h 30m

$179

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Sat 3/7

2:45 pm-9:03 pm

1 stop8h 18m

San Diego

Sat 3/14

10:30 pm-4:29 am

Nonstop3h 59m

$179

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Sat 5/2

8:50 am-11:30 am

Nonstop4h 40m

San Diego

Tue 5/5

1:00 pm-11:59 pm

1 stop8h 59m

$187

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Fri 3/13

7:05 am-9:47 am

Nonstop4h 42m

San Diego

Tue 3/17

7:00 am-1:15 pm

Nonstop4h 15m

$187

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Fri 3/13

7:05 am-9:47 am

Nonstop4h 42m

San Diego

Sun 3/15

10:30 pm-4:29 am

Nonstop3h 59m

$190

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/10

Showing 1-10 of 22 results
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Compare providers for flights from O'Hare Intl to San Diego

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from O'Hare Intl to San Diego in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*2 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
CheapOairPrice Accuracy3 starsTrust Score*3 stars
MytripPrice Accuracy2 starsTrust Score*3 stars
WAYAPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Chicago O'Hare Intl Airport-San Diego flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Chicago O'Hare Intl Airport-San Diego flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Chicago O'Hare Intl Airport-San Diego flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Chicago O'Hare Intl Airport-San Diego flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Chicago O'Hare Intl Airport-San Diego flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from O'Hare Intl to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego from O'Hare Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Chicago O'Hare Intl Airport to San Diego

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

Use this chart to determine the optimal time to book a round-trip flight from O'Hare Intl to San Diego. Price data was last updated on February 6, 2026.

The price you pay for your flight from Chicago O'Hare Intl Airport to San Diego may vary depending on when you book. For the best chance of a lower fare, look to book 52 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to San Diego?

Currently, April is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to San Diego (average of $82). Flying from Chicago O'Hare Intl Airport to San Diego in May is currently the most expensive (average of $177). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ORD to SAN?

Find hourly flight availability from O'Hare Intl to San Diego. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 11, 2026.

It’s optimal to fly from Chicago O'Hare Intl Airport to San Diego at noon. By choosing this option you can save up to 23% on the cost of your flight, compared to a flight in the afternoon.

What is the cheapest day to fly from Chicago O'Hare Intl Airport to San Diego?

Use this chart to determine the cheapest time to fly round-trip from O'Hare Intl to San Diego. Price data was last updated on February 7, 2026.

Travelers seeking maximum savings on their Chicago O'Hare Intl Airport to San Diego flight should consider departing on Saturday at noon when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

The best insider tips for Chicago O'Hare Intl Airport to San Diego flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Chicago O'Hare Intl Airport to San Diego trip
Our travel experts
Ramsey Qubein

Ramsey Qubein

Expert on ORD

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more
Blane Bachelor

Blane Bachelor

Expert on SAN

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Read more

Reviews of airlines servicing San Diego

Get insights into the airlines that provide service to San Diego. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Diego. Reviews last updated February 11, 2026.
See what other customers who have flown with Alaska Airlines, United Airlines, and American Airlines from Chicago O'Hare Intl Airport to San Diego have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,874 reviews

Crew

8.5

Comfort

7.8

Overall

8.0

Boarding

8.1

Entertainment

7.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

robert,Feb 2026

LAS - SAN

The good customer service team made you fell welcome on the flight.
Alaska Airlines
8.0
Very good
11,874 reviews
Alaska Airlines
8.0
Very good
11,874 reviews

Crew

8.5

Comfort

7.8

Overall

8.0

Boarding

8.1

Entertainment

7.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

robert,Feb 2026

LAS - SAN

The good customer service team made you fell welcome on the flight.
United Airlines
7.4
Good
9,274 reviews
Alaska Airlines
8.0
Very good
11,874 reviews

Crew

8.5

Comfort

7.8

Overall

8.0

Boarding

8.1

Entertainment

7.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

robert,Feb 2026

LAS - SAN

The good customer service team made you fell welcome on the flight.
American Airlines
7.2
Good
11,266 reviews
Alaska Airlines
8.0
Very good
11,874 reviews

Crew

8.5

Comfort

7.8

Overall

8.0

Boarding

8.1

Entertainment

7.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

robert,Feb 2026

LAS - SAN

The good customer service team made you fell welcome on the flight.
Spirit Airlines
6.3
Okay
8,444 reviews
Alaska Airlines
8.0
Very good
11,874 reviews

Crew

8.5

Comfort

7.8

Overall

8.0

Boarding

8.1

Entertainment

7.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

robert,Feb 2026

LAS - SAN

The good customer service team made you fell welcome on the flight.
Frontier
5.7
Fair
3,052 reviews
Alaska Airlines
8.0
Very good
11,874 reviews

Crew

8.5

Comfort

7.8

Overall

8.0

Boarding

8.1

Entertainment

7.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

robert,Feb 2026

LAS - SAN

The good customer service team made you fell welcome on the flight.

Related info for your journey

Find useful and relevant information for your journey from O'Hare Intl to San Diego. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to San Diego from Chicago O'Hare Intl?

    San Diego (SAN) is the airport you will fly into if you book a flight from Chicago O'Hare Intl to San Diego. You should not have trouble finding flights to San Diego from Chicago O'Hare Intl; the airport handles an average of 7 inbound flights from Chicago O'Hare Intl per day. You should also have plenty of airline options to choose from since 7 airlines have flights to the San Diego airport from Chicago O'Hare Intl. It is only a 2.6 mi journey from San Diego (SAN) to San Diego’s city center.

  • How long is the flight from Chicago O'Hare Intl Airport to San Diego?

    Departing from Chicago O'Hare Intl Airport to San Diego will take you 4h 40m. There are 1719 mi between Chicago O'Hare Intl Airport and San Diego. All flights are typically nonstop.

  • What are the cheapest airlines flying from Chicago O'Hare Intl Airport to San Diego round-trip?

    According to our current data, Spirit Airlines ($66), Frontier ($98), and Delta ($128) offers the cheapest pricing from Chicago O'Hare Intl Airport to San Diego. These flights start at 76% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Chicago O'Hare Intl Airport to San Diego one-way?

    $43 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 Frontier and Hawaiian Airlines, with prices starting from $57 and $69, respectively.

  • What are the most reliable airlines from Chicago O'Hare Intl Airport to San Diego?

    The top 3 most reliable airlines when flying from Chicago O'Hare Intl Airport to San Diego are United Airlines (74%), Austrian Airlines (71%) and Air Canada (70%).

  • What are the cheapest flights from Chicago O'Hare Intl Airport to San Diego?

    Looking at all options, your cheapest flight can be booked for $78. While the most popular route (Chicago O'Hare Intl - San Diego) can be booked for $121 on average, our data indicates $616 when flying from Chicago O'Hare Intl Airport to San Diego.

  • Can I find deals for flights from O'Hare Intl to San Diego that include hotel bookings?

    Yes. In addition to deals on O'Hare Intl to San Diego flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from O'Hare Intl to San Diego?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from O'Hare Intl to San Diego.

  • Can I find deals for business class flights from O'Hare Intl to San Diego?

    Yes. Cheapflights offers flight deals from O'Hare Intl to San Diego by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to San Diego?

    Currently, April is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to San Diego (average of $82). Flying from Chicago O'Hare Intl Airport to San Diego in May is currently the most expensive (average of $177). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
El Cajon
Chula Vista
National City
Coronado
La Mesa
Poway
Julian
Lemon Grove

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Top 7 airlines flying from O'Hare Intl to San Diego

Discover the top 7 airlines that operate flights from O'Hare Intl to San Diego. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$66Average$184FlexibilityNo cancel feeOn-time65%
FrontierCheapest$98Average$204FlexibilityNo cancel feeOn-time62%
DeltaCheapest$128Average$297FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$138Average$240FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$142Average$261FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$157Average$322FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$158Average$310FlexibilityNo cancel feeOn-time71%

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