For a quick departure, take the "L" train to ORD, avoiding Chicago traffic delays common with taxis or rideshares.
$81+ 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 8/8. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SAN
Jul 8 — Jul 151
1 adult, Economy
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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
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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 July, booked 71 days in advance, depart on a Wednesday or Saturday and return on a Wednesday
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 July 3, 2025.
Round-trip from | $164 (FlightHub) |
|---|---|
One-way from | $81 (FlightHub) |
Popular in | March |
Cheapest in | June |
Average price | $326 |
Good round-trip deal | $205 or less |
Good one-way deal | $117 or less |
Find flight deals from O'Hare Intl to San Diego
Cheapest flights from O'Hare Intl to San DiegoExplore 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 July 3, 2025.
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 July 3, 2025.
This FlightHub deal was found by Cheapflights users on 7/2. 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.
Wed 10/19:00 amORD - SAN
1 stop11h 10mSpirit Airlines
Tue 10/71:32 pmSAN - ORD
1 stop13h 14mSpirit Airlines
Deal found 7/2![Spirit Airlines logo]()
$164
This FlightHub deal was found by Cheapflights users on 7/2. 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.
Fri 7/251:39 pmORD - SAN
Nonstop4h 20mMultiple Airlines
Tue 7/296:15 amSAN - ORD
1 stop5h 58mMultiple Airlines
Deal found 7/2![Multiple Airlines logo]()
$165
This Cheapflightsfares deal was found by Cheapflights users on 7/3. 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.
Fri 8/11:39 pmORD - SAN
Nonstop4h 20mFrontier
Mon 8/44:44 pmSAN - ORD
Nonstop4h 23mFrontier
Deal found 7/3![Frontier logo]()
$166
This United Airlines deal was found by Cheapflights users on 7/2. 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 8/207:35 pmORD - SAN
Nonstop4h 27mUnited Airlines
Fri 8/222:11 pmSAN - ORD
Nonstop4h 14mUnited Airlines
Deal found 7/2![United Airlines logo]()
$184
This Alaska Airlines deal was found by Cheapflights users on 7/3. 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 11/132:00 pmORD - SAN
1 stop8h 40mAlaska Airlines
Sat 11/155:49 pmSAN - ORD
Nonstop4h 10mAlaska Airlines
Deal found 7/3![Alaska Airlines logo]()
$194
This American Airlines deal was found by Cheapflights users on 7/3. 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 8/2111:50 amORD - SAN
Nonstop4h 17mAmerican Airlines
Mon 8/252:57 pmSAN - ORD
Nonstop4h 17mAmerican Airlines
Deal found 7/3![American Airlines logo]()
$197
This Southwest deal was found by Cheapflights users on 7/2. 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.
Sat 9/131:50 pmORD - SAN
2 stops7h 40mSouthwest
Tue 9/166:35 amSAN - ORD
2 stops8h 10mSouthwest
Deal found 7/2![Southwest logo]()
$207
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 July 3, 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 10/1
9:00 am-6:10 pm
1 stop11h 10m
San Diego
Tue 10/7
1:32 pm-4:46 am
1 stop13h 14m
$164
ChicagoSan Diego
ORD - SAN
ORDSAN
Chicago O'Hare Intl
Fri 7/25
9:56 pm-6:19 pm
1 stop22h 23m
San Diego
Tue 7/29
3:57 pm-6:03 am
1 stop12h 06m
$165
ChicagoSan Diego
ORD - SAN
ORDSAN
Chicago O'Hare Intl
Fri 8/1
1:39 pm-3:59 pm
Nonstop4h 20m
San Diego
Mon 8/4
4:44 pm-11:07 pm
Nonstop4h 23m
$166
ChicagoSan Diego
ORD - SAN
ORDSAN
Chicago O'Hare Intl
Wed 8/20
7:35 pm-10:02 pm
Nonstop4h 27m
San Diego
Fri 8/22
2:11 pm-8:25 pm
Nonstop4h 14m
$184
ChicagoSan Diego
ORD - SAN
ORDSAN
Chicago O'Hare Intl
Thu 11/13
2:00 pm-8:40 pm
1 stop8h 40m
San Diego
Sat 11/15
5:49 pm-11:59 pm
Nonstop4h 10m
$194
ChicagoSan Diego
ORD - SAN
ORDSAN
Chicago O'Hare Intl
Thu 8/21
11:50 am-2:07 pm
Nonstop4h 17m
San Diego
Mon 8/25
2:57 pm-9:14 pm
Nonstop4h 17m
$197
ChicagoSan Diego
ORD - SAN
ORDSAN
Chicago O'Hare Intl
Sat 9/13
1:50 pm-7:30 pm
2 stops7h 40m
San Diego
Tue 9/16
6:35 am-4:45 pm
2 stops8h 10m
$207
ChicagoSan Diego
ORD - SAN
ORDSAN
Chicago O'Hare Intl
Fri 8/8
9:56 pm-6:19 pm
1 stop22h 23m
$81
ChicagoSan Diego
ORD - SAN
ORDSAN
Chicago O'Hare Intl
Sat 10/4
10:00 am-1:00 pm
Nonstop5h 00m
$86
ChicagoSan Diego
ORD - SAN
ORDSAN
Chicago O'Hare Intl
Thu 7/17
3:18 pm-11:06 pm
1 stop9h 48m
$91
Showing 1-10 of 13 results
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
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 27, 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 July 3, 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 31% 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 29, 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 July 3, 2025.
The most flights from ORD to SAN are scheduled on a Thursday (43 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (3 on average).
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 July 3, 2025.
See what other customers who have flown with Southwest, Hawaiian Airlines, and United 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.
Boarding
8.2
Food
7.0
Crew
8.6
Comfort
8.0
Entertainment
7.6
Overall
8.0
Reviews
1 / 20
10.0
ExcellentMerlyn,Feb 2025
LAX - SMF
Boarding
8.2
Food
7.0
Crew
8.6
Comfort
8.0
Entertainment
7.6
Overall
8.0
Reviews
1 / 20
10.0
ExcellentMerlyn,Feb 2025
LAX - SMF
Boarding
8.2
Food
7.0
Crew
8.6
Comfort
8.0
Entertainment
7.6
Overall
8.0
Reviews
1 / 20
10.0
ExcellentMerlyn,Feb 2025
LAX - SMF
Boarding
8.2
Food
7.0
Crew
8.6
Comfort
8.0
Entertainment
7.6
Overall
8.0
Reviews
1 / 20
10.0
ExcellentMerlyn,Feb 2025
LAX - SMF
Boarding
8.2
Food
7.0
Crew
8.6
Comfort
8.0
Entertainment
7.6
Overall
8.0
Reviews
1 / 20
10.0
ExcellentMerlyn,Feb 2025
LAX - SMF
Boarding
8.2
Food
7.0
Crew
8.6
Comfort
8.0
Entertainment
7.6
Overall
8.0
Reviews
1 / 20
10.0
ExcellentMerlyn,Feb 2025
LAX - SMF
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.
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 locationsEl Cajon
Chula Vista
Coronado
National City
Lemon Grove
Imperial Beach
La Mesa
Poway
Alpine
Santee
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Alternative routes for O'Hare Intl to San Diego
See prices for flight routes from nearby airports that may be better suited for you.
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 July 3, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$93 | Average$216 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$118 | Average$197 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$208 | Average$402 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$236 | Average$333 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$237 | Average$533 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$255 | Average$475 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$296 | Average$501 | FlexibilityNo cancel fee | On-time63% |