Cheap flights from Chicago O'Hare Intl Airport to San Diego from $58
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago O'Hare Intl Airport to San Diego departing on 7/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Spirit Airlines flights from Chicago O'Hare Intl Airport to San Diego
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Frontier flights from Chicago O'Hare Intl Airport to San Diego
Our best Frontier deals on Chicago O'Hare Intl Airport to San Diego flight tickets
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How to get the cheapest flight ticket from Chicago O'Hare Intl Airport to San Diego
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to San Diego?
If you are unable to visit San Diego during the month of June, then departing from Chicago O'Hare Intl Airport during the month August is also very affordable. Most momondo users find prices during this month for around $336.
What is the cheapest day to depart on your flight to San Diego?
The cheapest day to depart from Chicago O'Hare Intl Airport to San Diego is on a Wednesday. Travelers who choose to depart for San Diego on a Wednesday will often find tickets for as low as $403. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $470. These prices are subject to change though, so be sure to set up a Price Alert for flights to San Diego.
What is the cheapest time of day to depart on your flight to San Diego?
The cheapest time of day to fly to San Diego is at noon when flights can be purchased for as low as $372. Flights in the evening are often more expensive with an average ticket price of $461.
What is the cheapest Chicago O'Hare Intl to San Diego flight route?
Fly from Chicago O'Hare Intl to San Diego for the best Chicago O'Hare Intl - San Diego flight prices
How far in advance should I book a flight to San Diego?
You are more likely to see cheaper flights to San Diego from Chicago O'Hare Intl Airport when booking 11 weeks ahead of your departure date. In general, you can expect to find flights to San Diego for around $400 when searching 11 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Diego from Chicago O'Hare Intl Airport for as low as $311 on momondo.
What cabin class options are available on Chicago O'Hare Intl to San Diego flights?
There are 4 cabin classes available to choose from on Chicago O'Hare Intl to San Diego flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
Can stopping save me money on Chicago O'Hare Intl Airport to San Diego flights?
No. A direct flight is the cheapest option for a flight between Chicago O'Hare Intl Airport to San Diego.
How have Chicago O'Hare Intl Airport to San Diego flight prices changed over time?
As of June 2025, prices for Chicago O'Hare Intl Airport to San Diego flights are approximately 29% cheaper when compared to flights at the same time last year.
What is the cheapest airline that flies from Chicago O'Hare Intl to San Diego?
Spirit Airlines, Frontier, and United Airlines are the most popular carriers operating from Chicago O'Hare Intl to San Diego
What airlines fly to San Diego?
American Airlines, United Airlines and Frontier are the top three most popular airlines that fly to San Diego from Chicago O'Hare Intl Airport according to our data. American Airlines is the first choice among our users, with 57% of people opting to fly with this airline when traveling to San Diego. Keep in mind that there are 7 different airlines that fly to San Diego on a routine basis, so you have a few additional options to choose from.
How many flights depart from Chicago O'Hare Intl Airport to San Diego on average per day?
As of June 2025, 39 flights take off from Chicago O'Hare Intl Airport and land in San Diego each day. The most common flight departure time for this route is 9:00PM, with 36% of daily flights taking off in the afternoon.
How many flights depart from Chicago O'Hare Intl Airport to San Diego on average per week?
274 flights are operational weekly from Chicago O'Hare Intl Airport to San Diego as of June 2025. The most popular departure day for this route is Tue, with 16% of flights per week taking off on this day.
When to book flights from Chicago O'Hare Intl Airport to San Diego
Cheap Chicago O'Hare Intl Airport to San Diego (ORD to SAN) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Chicago O'Hare Intl Airport to San Diego
How far is Chicago O'Hare Intl to San Diego by plane?
San Diego is 1717.8 mi away from Chicago O'Hare Intl. In terms of flight time, this usually takes a little over 4h 12m.
When did momondo last update prices for flights from Chicago O'Hare Intl Airport to San Diego Airport?
Prices for flights from Chicago O'Hare Intl Airport to San Diego Airport refresh daily.
How many operators does momondo search for flights from Chicago O'Hare Intl Airport to San Diego Airport?
The number of operators available for flights from Chicago O'Hare Intl Airport to San Diego Airport is 7 as of June 2025.
How old do you have to be to fly from Chicago O'Hare Intl Airport to San Diego Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chicago O'Hare Intl Airport to San Diego Airport.
What documentation or ID do you need to fly to San Diego Airport?
The required travel and health documents for your San Diego Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at San Diego Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Chicago O'Hare Intl Airport to San Diego?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Chicago O'Hare Intl Airport to San Diego is Boeing 737-800 (33.72% of total bookings). The next most popular plane models are Airbus A321-100/200 (14.47%), Airbus A321neo (13.57%), and Boeing 737-900 (9.22%).
What is the most popular airline from Chicago O'Hare Intl Airport to San Diego?
Based on momondo bookings for flights between Chicago O'Hare Intl Airport and San Diego, the leading airline is American Airlines, making up 46% of the total bookings. Other popular airlines include United Airlines with 35%, Frontier with 12%, and Spirit Airlines with 5%.
Best airlines flying from Chicago O'Hare Intl Airport to San Diego
Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to San Diego with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $95 | Free Cancellation | Rating 6.3 8,064 reviews | |||
| PriceFrom $118 | Free Cancellation | Rating 5.9 3,299 reviews | |||
| PriceFrom $212 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $236 | Free Cancellation | Rating 8.0 7,964 reviews | |||
| PriceFrom $244 | Free Cancellation | Rating 7.4 8,809 reviews | |||
| PriceFrom $246 | Free Cancellation | Rating 8.0 10,000 reviews | |||
| PriceFrom $296 | Free Cancellation | Rating 8.0 4,278 reviews |
Alaska Airlines Flights From Chicago O'Hare Intl Airport to San Diego
Across 34 Alaska Airlines flights from Chicago O'Hare Intl Airport to San Diego this week, the average price was $561, with the best Alaska Airlines deals starting from $246 round-trip. 10,000 users have rated Alaska Airlines on momondo, with an average score of 8.0/10.
United Airlines Flights From Chicago O'Hare Intl Airport to San Diego
United Airlines is also a popular choice for this route. United Airlines flight deals for Chicago O'Hare Intl Airport to San Diego start from as low as $244 round-trip, depending on your selected dates, with average United Airlines deals seen on momondo around $473. United Airlines operates 34 flights to San Diego from Chicago O'Hare Intl Airport in an average week. Users have rated it 7.4/10 across 8,809 reviews.
Traveling to a place near San Diego?
Book flights to San Diego if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Chicago to San Diego?
Finding the right flight to San Diego from Chicago is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to San Diego quick and easy, saving you time and money.
Can I find flights from Chicago to San Diego with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for Chicago to San Diego flights to just show those with flexible booking policies.
How can momondo help me find flights from Chicago to San Diego?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to San Diego from Chicago.
I’m not ready to book a flight from Chicago to San Diego right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of Chicago to San Diego flights. All you need is a valid email address and we will do the rest; it is that quick and easy.