HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San Diego

$155+ 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 7/9. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SAN
Jul 27 — Aug 31
Mon 7/27
Mon 8/3
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from O'Hare Intl to San Diego with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.
Cheapflights Tip: The best prices from Chicago O'Hare Intl to San Diego are usually found in October or September, booked 52 days in advance, depart on a Thursday or Friday and return on a Friday

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 June 27, 2026.

This Kiwi.com deal was found by Cheapflights users on 6/22. 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.
Tue 6/307:20 am
ORD
-
SAN
1 stop27h 31m
Frontier
Wed 7/157:46 pm
SAN
-
ORD
2 stops32h 31m
Frontier
Deal found 6/22$295
This Frontier deal was found by Cheapflights users on 6/24. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/119:57 pm
ORD
-
SAN
1 stop13h 08m
Frontier
Sat 7/186:25 am
SAN
-
ORD
1 stop12h 27m
Frontier
Deal found 6/24$296
This Delta deal was found by Cheapflights users on 6/23. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/86:30 pm
ORD
-
SAN
1 stop6h 25m
Delta
Sat 10/1010:30 pm
SAN
-
ORD
1 stop7h 30m
Delta
Deal found 6/23$297
This Frontier deal was found by Cheapflights users on 6/24. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/99:57 pm
ORD
-
SAN
1 stop13h 08m
Frontier
Mon 7/138:51 pm
SAN
-
ORD
1 stop6h 46m
Frontier
Deal found 6/24$298
This Kiwi.com deal was found by Cheapflights users on 6/22. 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.
Wed 7/227:15 am
ORD
-
SAN
1 stop8h 53m
Multiple Airlines
Wed 7/295:23 pm
SAN
-
ORD
Nonstop4h 13m
Multiple Airlines
Deal found 6/22$299
This American Airlines deal was found by Cheapflights users on 6/26. 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.
Tue 8/1110:02 am
ORD
-
SAN
Nonstop4h 19m
American Airlines
Wed 8/261:11 pm
SAN
-
ORD
Nonstop4h 48m
American Airlines
Deal found 6/26$300
This Frontier deal was found by Cheapflights users on 6/23. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/119:57 pm
ORD
-
SAN
1 stop13h 08m
Frontier
Sun 7/196:35 am
SAN
-
ORD
1 stop11h 52m
Frontier
Deal found 6/23$301
This Booking.com deal was found by Cheapflights users on 6/24. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/146:20 am
ORD
-
SAN
Nonstop4h 34m
Multiple Airlines
Wed 7/226:35 am
SAN
-
ORD
1 stop7h 33m
Multiple Airlines
Deal found 6/24$302
This Kiwi.com deal was found by Cheapflights users on 6/25. 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 9/1411:06 am
ORD
-
SAN
1 stop6h 35m
Multiple Airlines
Tue 9/227:03 am
SAN
-
ORD
Nonstop4h 19m
Multiple Airlines
Deal found 6/25$303
This Kiwi.com deal was found by Cheapflights users on 6/27. 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.
Thu 7/309:28 am
ORD
-
SAN
1 stop11h 33m
Multiple Airlines
Wed 8/127:00 am
SAN
-
ORD
Nonstop4h 21m
Multiple Airlines
Deal found 6/27$304
This Expedia deal was found by Cheapflights users on 6/24. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/29:57 pm
ORD
-
SAN
1 stop13h 08m
Frontier
Thu 8/66:35 am
SAN
-
ORD
1 stop11h 52m
Frontier
Deal found 6/24$305
This Frontier deal was found by Cheapflights users on 6/24. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/99:57 pm
ORD
-
SAN
1 stop13h 08m
Frontier
Thu 7/168:51 pm
SAN
-
ORD
1 stop6h 46m
Frontier
Deal found 6/24$306

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 June 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$295
(Kiwi.com)

One-way from

$155
(Frontier)

Popular in

June

Cheapest in

October

Average price

$358

Good round-trip deal

$357 or less

Good one-way deal

$178 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.
Search Deals
From Chicago O'Hare Intl to San Diego
Search Deals
One-way flight from Chicago O'Hare Intl to San Diego
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($39 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 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 June 27, 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

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Sun 10/4

6:00 am-1:18 pm

1 stop9h 18m

San Diego

Wed 10/7

11:40 am-8:24 pm

1 stop6h 44m

$297

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Fri 10/9

7:10 am-3:41 pm

1 stop10h 31m

San Diego

Mon 10/12

6:20 am-4:37 pm

1 stop8h 17m

$297
Quickest round-trip

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Thu 8/13

4:00 pm-6:30 pm

Nonstop4h 30m

San Diego

Thu 8/20

4:08 pm-10:14 pm

Nonstop4h 06m

$306

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Sat 8/15

6:40 am-12:33 pm

1 stop7h 53m

San Diego

Sat 8/22

3:00 pm-11:48 pm

1 stop6h 48m

$326

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Thu 10/22

7:20 am-9:56 am

Nonstop4h 36m

San Diego

Sat 10/24

12:07 pm-11:59 pm

1 stop9h 52m

$327

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Sat 8/8

6:20 am-8:54 am

Nonstop4h 34m

San Diego

Thu 8/20

7:03 am-1:22 pm

Nonstop4h 19m

$335

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Wed 8/12

4:00 pm-6:30 pm

Nonstop4h 30m

San Diego

Sun 8/16

6:18 am-12:37 pm

Nonstop4h 19m

$335

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Tue 8/4

6:20 am-8:54 am

Nonstop4h 34m

San Diego

Mon 8/10

5:23 pm-11:36 pm

Nonstop4h 13m

$335

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Mon 7/27

7:01 am-9:29 am

Nonstop4h 28m

San Diego

Fri 7/31

4:41 pm-10:59 pm

Nonstop4h 18m

$335

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Mon 7/27

6:20 am-8:54 am

Nonstop4h 34m

San Diego

Wed 7/29

5:23 pm-11:36 pm

Nonstop4h 13m

$335

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/27

Showing 1-10 of 23 resultsSorted by cheapest first
1
2
3

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 June.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
eDreamsPrice Accuracy2 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*1 star
CheapfaremartPrice Accuracy-Trust Score*1 star
MytripPrice Accuracy2 starsTrust Score*3 stars
GotogatePrice Accuracy2 starsTrust Score*3 stars
WAYAPrice Accuracy3 starsTrust Score*3 stars
CheapTicketsDealPrice Accuracy1 starTrust 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?

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 49 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, October is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to San Diego (average of $231). Flying from Chicago O'Hare Intl Airport to San Diego in June is currently the most expensive (average of $359). 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 June 27, 2026.

It’s optimal to fly from Chicago O'Hare Intl Airport to San Diego in the evening. By choosing this option you can save up to 11% 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 June 20, 2026.

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

How much does it cost to fly round-trip from Chicago O'Hare Intl Airport to San Diego?

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 June 27, 2026.
See what other customers who have flown with Alaska Airlines,Hawaiian Airlines, andUnited 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
7.9
Good
12,583 reviews

Entertainment

7.0

Comfort

7.8

Food

7.0

Overall

7.9

Boarding

8.1

Crew

8.5

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
7.9
Good
12,583 reviews
Alaska Airlines
7.9
Good
12,583 reviews

Entertainment

7.0

Comfort

7.8

Food

7.0

Overall

7.9

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

robert,Feb 2026

LAS - SAN

The good customer service team made you fell welcome on the flight.
Hawaiian Airlines
7.8
Good
2,826 reviews
Alaska Airlines
7.9
Good
12,583 reviews

Entertainment

7.0

Comfort

7.8

Food

7.0

Overall

7.9

Boarding

8.1

Crew

8.5

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
9,901 reviews
Alaska Airlines
7.9
Good
12,583 reviews

Entertainment

7.0

Comfort

7.8

Food

7.0

Overall

7.9

Boarding

8.1

Crew

8.5

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
7.1
Good
11,779 reviews
Alaska Airlines
7.9
Good
12,583 reviews

Entertainment

7.0

Comfort

7.8

Food

7.0

Overall

7.9

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

robert,Feb 2026

LAS - SAN

The good customer service team made you fell welcome on the flight.
Frontier
5.6
Fair
2,858 reviews
Alaska Airlines
7.9
Good
12,583 reviews

Entertainment

7.0

Comfort

7.8

Food

7.0

Overall

7.9

Boarding

8.1

Crew

8.5

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 39 inbound flights from Chicago O'Hare Intl per day. You should also have plenty of airline options to choose from since 6 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 30m. There are 1719 mi between Chicago O'Hare Intl Airport and San Diego. This flight may include one or multiple stops.

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

    According to our current data, Frontier ($96), Hawaiian Airlines ($138), and Alaska Airlines ($151) offers the cheapest pricing from Chicago O'Hare Intl Airport to San Diego. These flights start at 66% 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?

    $57 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Hawaiian Airlines and Alaska Airlines, with prices starting from $69 and $77, 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 Hawaiian Airlines (86%), Alaska Airlines (82%) and Air Canada (80%).

  • 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 $133. While the most popular route (Chicago O'Hare Intl - San Diego) can be booked for $234 on average, our data indicates $719 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, October is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to San Diego (average of $231). Flying from Chicago O'Hare Intl Airport to San Diego in June is currently the most expensive (average of $359). 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
National City
Chula Vista
Poway
Coronado
La Mesa
Santee
Julian
Lemon Grove

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 6 airlines flying from O'Hare Intl to San Diego

Discover the top 6 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 June 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$96Average$209FlexibilityNo cancel feeOn-time62%
Hawaiian AirlinesCheapest$138Average$237FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$151Average$297FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$156Average$294FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$157Average$318FlexibilityNo cancel feeOn-time69%
DeltaCheapest$186Average$287FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
©2026 Cheapflights