HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San Diego

$93+ 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 8/5. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SAN
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June or August, booked 71 days in advance, depart on a Wednesday or Tuesday and return on a Thursday

Cheap 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 12, 2025.

Round-trip from

$176
(Cheapflightsfares)

One-way from

$93
(Kiwi.com)

Popular in

March

Cheapest in

June

Average price

$318

Good round-trip deal

$221 or less

Good one-way deal

$128 or less
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 ($58 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2025
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

Find 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 12, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 6/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/181:56 pmORD - SAN
Nonstop4h 12mFrontier
Sat 6/214:53 pmSAN - ORD
Nonstop4h 03mFrontier
Deal found 6/10$176
This FlightHub deal was found by Cheapflights users on 6/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/2411:50 amORD - SAN
1 stop13h 39mSpirit Airlines
Mon 6/305:50 pmSAN - ORD
2 stops13h 48mSpirit Airlines
Deal found 6/10$177
This Priceline deal was found by Cheapflights users on 6/10. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/241:56 pmORD - SAN
Nonstop4h 12mMultiple Airlines
Mon 6/307:31 pmSAN - ORD
1 stop8h 41mMultiple Airlines
Deal found 6/10$178
This United Airlines deal was found by Cheapflights users on 6/10. 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.
Fri 8/229:13 amORD - SAN
Nonstop4h 27mUnited Airlines
Tue 8/262:11 pmSAN - ORD
Nonstop4h 14mUnited Airlines
Deal found 6/10$186
This Alaska Airlines deal was found by Cheapflights users on 6/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/151:03 pmORD - SAN
1 stop9h 51mAlaska Airlines
Mon 8/187:00 amSAN - ORD
1 stop14h 39mAlaska Airlines
Deal found 6/10$230
This American Airlines deal was found by Cheapflights users on 6/11. 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.
Sat 7/57:14 amORD - SAN
Nonstop4h 14mAmerican Airlines
Sat 7/1210:45 pmSAN - ORD
Nonstop4h 11mAmerican Airlines
Deal found 6/11$239
This Hawaiian Airlines deal was found by Cheapflights users on 6/12. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/93:20 pmORD - SAN
1 stop9h 42mHawaiian Airlines
Mon 10/135:19 pmSAN - ORD
Nonstop4h 40mHawaiian Airlines
Deal found 6/12$247
This Delta deal was found by Cheapflights users on 6/11. 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.
Sat 8/27:00 amORD - SAN
1 stop7h 20mDelta
Tue 8/1210:40 pmSAN - ORD
1 stop7h 24mDelta
Deal found 6/11$257
This Southwest deal was found by Cheapflights users on 6/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/207:30 amORD - SAN
2 stops9h 50mSouthwest
Sun 8/246:20 amSAN - ORD
1 stop7h 00mSouthwest
Deal found 6/10$262

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 12, 2025.
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

Wed 6/18

1:56 pm-4:08 pm

Nonstop4h 12m

San Diego

Sat 6/21

4:53 pm-10:56 pm

Nonstop4h 03m

$176

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Tue 6/24

11:50 am-11:29 pm

1 stop13h 39m

San Diego

Mon 6/30

5:50 pm-9:38 am

2 stops13h 48m

$177

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Tue 6/24

1:56 pm-4:08 pm

Nonstop4h 12m

San Diego

Mon 6/30

7:31 pm-6:12 am

1 stop8h 41m

$178

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Fri 8/22

9:13 am-11:40 am

Nonstop4h 27m

San Diego

Tue 8/26

2:11 pm-8:25 pm

Nonstop4h 14m

$186

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Sun 8/17

9:00 pm-11:23 pm

Nonstop4h 23m

San Diego

Sat 8/23

1:08 pm-7:25 pm

Nonstop4h 17m

$199

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Fri 8/15

1:03 pm-8:54 pm

1 stop9h 51m

San Diego

Mon 8/18

7:00 am-11:39 pm

1 stop14h 39m

$230

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Sat 8/2

7:00 am-12:20 pm

1 stop7h 20m

San Diego

Mon 8/11

10:30 pm-10:04 am

1 stop9h 34m

$257

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Wed 8/20

7:30 am-3:20 pm

2 stops9h 50m

San Diego

Sat 8/23

6:30 am-4:25 pm

1 stop7h 55m

$262

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Tue 8/5

7:08 am-5:55 pm

1 stop12h 47m

$93

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Sat 8/16

7:18 pm-7:42 am

1 stop14h 24m

$96

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

Showing 1-10 of 16 results
1
2

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

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Chicago O'Hare Intl Airport to San Diego trip
Airports
ORD

For a quick departure, take the "L" train to ORD, avoiding Chicago traffic delays common with taxis or rideshares.

Read more about ORDby Ramsey Qubein
SAN

Upon arrival at SAN, use the free San Diego Flyer shuttle to connect to the Old Town Transit Center for easy downtown access.

Read more about SANby Blane Bachelor
Our travel experts
Ramsey Qubein

Ramsey Qubein

Expert on ORD

Ramsey Qubein

Ramsey Qubein

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

Blane Bachelor

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

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 June 9, 2025.

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 71 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, August is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to San Diego (average of $286). Flying from Chicago O'Hare Intl Airport to San Diego in March is currently the most expensive (average of $366). 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 12, 2025.

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 19% on the cost of your flight, compared to a flight in the evening.

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 8, 2025.

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.

Weekly flight availability from Chicago O'Hare Intl Airport to San Diego

Explore weekly flight availability from O'Hare Intl to San Diego. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 12, 2025.

The most flights from ORD to SAN are scheduled on a Thursday (45 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (31 on average).

Rainfall in San Diego by month

Plan your trip to San Diego by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Diego ranges from 0.0 - 2.3 inches per month. February is typically the wettest month, when rainfall can reach 2.3 in. July is typically the driest time to visit San Diego when rainfall is around 0.0 in.

Temperature in San Diego by month

Plan your trip to San Diego by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Diego, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 57.2 F).

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 12, 2025.
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,950 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 38 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.

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

    According to our current data, Frontier ($176), Spirit Airlines ($177), and United Airlines ($186) offers the cheapest pricing from Chicago O'Hare Intl Airport to San Diego. These flights start at 56% 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?

    $93 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 Alaska Airlines and Frontier, with prices starting from $96 and $99, 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 Japan Airlines (96%), Austrian Airlines (90%) and Air Canada (88%).

  • 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 $88. While the most popular route (Chicago O'Hare Intl - San Diego) can be booked for $106 on average our data indicates $658 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, August is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to San Diego (average of $286). Flying from Chicago O'Hare Intl Airport to San Diego in March is currently the most expensive (average of $366). 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 Chicago O'Hare Intl Airport?

Book flights to Chicago O'Hare Intl Airport if you plan to visit one of these locations
El Cajon
Chula Vista
National City
Imperial Beach
La Mesa
Alpine
Lemon Grove
Poway
Santee
Coronado

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.

Alternative routes for O'Hare Intl to San Diego

See prices for flight routes from nearby airports that may be better suited for you.
O'Hare Intl to Las Vegas flights
O'Hare Intl to Los Angeles flights
O'Hare Intl to San Francisco flights
O'Hare Intl to Santa Ana flights
O'Hare Intl to Ontario flights
Midway to Las Vegas flights
O'Hare Intl to Burbank flights
Midway to Los Angeles flights
Midway to San Francisco flights
O'Hare Intl to Oakland flights
O'Hare Intl to Reno flights
O'Hare Intl to Sacramento flights
O'Hare Intl to San Jose flights
Midway to San Diego flights
O'Hare Intl to Palm Springs flights
Midway to Santa Ana flights
Rockford to Las Vegas flights
Midway to Ontario flights
Midway to Reno flights
O'Hare Intl to Fresno flights
O'Hare Intl to Santa Barbara flights
Midway to Palm Springs flights
Midway to Burbank flights
Midway to Sacramento flights
Midway to Oakland flights
O'Hare Intl to Long Beach flights
Midway to San Jose flights
O'Hare Intl to Monterey flights
Midway to Long Beach flights
Midway to Fresno flights
O'Hare Intl to San Luis Obispo flights
O'Hare Intl to Santa Rosa flights
O'Hare Intl to Medford flights
O'Hare Intl to Arcata flights
Midway to Medford flights
O'Hare Intl to Tijuana flights
O'Hare Intl to Redding flights
O'Hare Intl to Bakersfield flights
Midway to Tijuana flights
O'Hare Intl to Yuma flights
O'Hare Intl to Merced flights
O'Hare Intl to Mexicali flights
Midway to Mexicali flights
O'Hare Intl to Mammoth Lakes flights

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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$97Average$224FlexibilityNo cancel feeOn-time65%
FrontierCheapest$117Average$203FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$216Average$409FlexibilityNo cancel feeOn-time71%
DeltaCheapest$236Average$338FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$246Average$566FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$246Average$473FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$360Average$501FlexibilityNo cancel feeOn-time63%

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.