Cheap flights from Chicago O'Hare Intl Airport to San Diego
ORD — SAN
1 Aug — 8 Aug1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Chicago O'Hare Intl to San Diego are usually found in October or September, booked 50 days in advance, depart on a Tuesday or Monday and return on a Monday
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 2 July 2026.
Popular in
June
Cheapest in
October
Average price
£259
Highest demand for flights based on searches. 13% potential increase in price (£25 potential increase over avg. return price).
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.
ORD-SAN
Estimated return 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
Prices
Airlines
How far ahead should I book a flight from Chicago O'Hare Intl Airport to San Diego?
Booking 49 days in advance of your planned departure date is, on average, the best time to get cheap flights from Chicago O'Hare Intl Airport to San Diego. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
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 £174). Flying from Chicago O'Hare Intl Airport to San Diego in June is currently the most expensive (average of £271). 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 2 July 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Chicago O'Hare Intl Airport to San Diego as you normally would.
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 2 July 2026.
The most flights from ORD to SAN are scheduled on a Wednesday (51 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (11 on average).
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?
For a flight from Chicago O'Hare Intl to San Diego, you will be flying into San Diego. San Diego (SAN) is just 2.6 mi from the center of the city. San Diego is the only San Diego airport and it handles 31 inbound flights from Chicago O'Hare Intl per day. 0 airlines have flights to San Diego from Chicago O'Hare Intl on a regular basis.
What are the most reliable airlines from Chicago O'Hare Intl Airport to San Diego?
Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Chicago O'Hare Intl Airport to San Diego on time: Hawaiian Airlines (86%), Alaska Airlines (82%), Air Canada (80%).
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 holiday 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 £174). Flying from Chicago O'Hare Intl Airport to San Diego in June is currently the most expensive (average of £271). 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.
Explore flights to San Diego departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 2 July 2026.
Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from O'Hare Intl to San Diego?
Cheapflights makes it easy to find O'Hare Intl to San Diego flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.
Why should you use Cheapflights to find cheap flight tickets from O'Hare Intl to San Diego?
By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to San Diego from O'Hare Intl.
Can Cheapflights find flights from O'Hare Intl to San Diego with no change fees?
Yes! Cheapflights helps users easily find flights from O'Hare Intl to San Diego with no change fees.
Can Cheapflights notify me if prices for flights from O'Hare Intl to San Diego become cheaper?
Not ready to book yet? You can track prices for flights from O'Hare Intl to San Diego on Cheapflights with our Price Alert feature and get notified when better prices are available.
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