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Cheap flights from Chicago O'Hare Intl Airport to San Diego from $41

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 8/6. 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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Find the cheapest flights from Chicago O'Hare Intl Airport to San Diego

Cheap round-trip flights

Spirit Airlines Logo
7:08 am - 5:55 pmORD-SAN
12h 47m1 stop
Spirit Airlines Logo
9:40 pm - 6:03 amSAN-ORD
6h 23m1 stop
$114Spirit Airlines
Find Deal
mié., ago. 6 - dom., ago. 10
Spirit Airlines Logo
3:18 pm - 11:06 pmORD-SAN
9h 48m1 stop
Spirit Airlines Logo
1:17 pm - 4:50 amSAN-ORD
13h 33m1 stop
$117Spirit Airlines
Find Deal
mié., ago. 6 - lun., ago. 25
Spirit Airlines Logo
7:08 am - 5:55 pmORD-SAN
12h 47m1 stop
Spirit Airlines Logo
9:40 pm - 6:03 amSAN-ORD
6h 23m1 stop
$119Spirit Airlines
Find Deal
mié., ago. 6 - dom., ago. 10
Frontier Logo
1:39 pm - 3:59 pmORD-SAN
4h 20mnonstop
Frontier Logo
4:44 pm - 11:07 pmSAN-ORD
4h 23mnonstop
$122Frontier
Find Deal
mié., ago. 6 - sáb., ago. 9
Frontier Logo
7:00 am - 9:20 amORD-SAN
4h 20mnonstop
Frontier Logo
4:33 pm - 10:55 pmSAN-ORD
4h 22mnonstop
$123Frontier
Find Deal
lun., sep. 1 - lun., sep. 8
Spirit Airlines Logo
6:00 am - 10:45 amORD-SAN
6h 45m1 stop
Spirit Airlines Logo
3:10 pm - 11:43 pmSAN-ORD
6h 33m1 stop
$126Spirit Airlines
Find Deal
jue., nov. 6 - lun., nov. 10
Logo
7:08 am - 5:55 pmORD-SAN
12h 47m1 stop
Logo
4:44 pm - 11:07 pmSAN-ORD
4h 23mnonstop
$138
Find Deal
mié., ago. 6 - sáb., ago. 9
Logo
1:39 pm - 3:59 pmORD-SAN
4h 20mnonstop
Logo
9:40 pm - 6:03 amSAN-ORD
6h 23m1 stop
$158
Find Deal
mar., ago. 5 - dom., ago. 10
United Airlines Logo
8:20 pm - 10:44 pmORD-SAN
4h 24mnonstop
United Airlines Logo
5:35 pm - 11:50 pmSAN-ORD
4h 15mnonstop
$171United Airlines
Find Deal
lun., ago. 11 - lun., ago. 18
American Airlines Logo
9:00 pm - 11:23 pmORD-SAN
4h 23mnonstop
American Airlines Logo
6:19 am - 12:39 pmSAN-ORD
4h 20mnonstop
$172American Airlines
Find Deal
lun., ago. 11 - lun., ago. 18

Spirit Airlines flights from Chicago O'Hare Intl Airport to San Diego

Our best Spirit Airlines deals on Chicago O'Hare Intl Airport to San Diego flight tickets
Spirit Airlines
Aug 6
ORD7:08 amChicago O'Hare Intl
12h 47m
1 stop
SAN5:55 pmSan Diego
Aug 10
SAN9:40 pmSan Diego
6h 23m
1 stop
ORD6:03 amChicago O'Hare Intl
$114
Find similar
Spirit Airlines
Aug 6
ORD3:18 pmChicago O'Hare Intl
9h 48m
1 stop
SAN11:06 pmSan Diego
Aug 25
SAN1:17 pmSan Diego
13h 33m
1 stop
ORD4:50 amChicago O'Hare Intl
$117
Find similar
Spirit Airlines
Aug 6
ORD7:08 amChicago O'Hare Intl
12h 47m
1 stop
SAN5:55 pmSan Diego
Aug 10
SAN9:40 pmSan Diego
6h 23m
1 stop
ORD6:03 amChicago O'Hare Intl
$119
Find similar

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
Frontier
Aug 6
ORD1:39 pmChicago O'Hare Intl
4h 20m
SAN3:59 pmSan Diego
Aug 9
SAN4:44 pmSan Diego
4h 23m
ORD11:07 pmChicago O'Hare Intl
$122
Find similar
Frontier
Sep 1
ORD7:00 amChicago O'Hare Intl
4h 20m
SAN9:20 amSan Diego
Sep 8
SAN4:33 pmSan Diego
4h 22m
ORD10:55 pmChicago O'Hare Intl
$123
Find similar
Frontier
Aug 31
ORD7:25 amChicago O'Hare Intl
4h 20m
SAN9:45 amSan Diego
Sep 11
SAN4:33 pmSan Diego
4h 22m
ORD10:55 pmChicago O'Hare Intl
$128
Find similar

See travel insights to San Diego from

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 July, then departing from Chicago O'Hare Intl Airport during the month June is also very affordable. Most momondo users find prices during this month for around $297.

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 $395. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $471. 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 $307. Flights in the evening are often more expensive with an average ticket price of $460.

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 weeks ahead of your departure date. In general, you can expect to find flights to San Diego for around $387 when searching 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 $308 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 July 2025, prices for Chicago O'Hare Intl Airport to San Diego flights are approximately 66% cheaper when compared to flights at the same time last year.

When to book flights from Chicago O'Hare Intl Airport to San Diego

Are you open to changing your travel dates? Check out the ideal times to fly from Chicago O'Hare Intl Airport to San Diego according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

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

Best Price Found

$41

Fastest flight time

4h 20m

Direct flights

Every day

Airports in San Diego

1 airport
The best one-way flight to San Diego from Chicago O'Hare Intl Airport in the past 72 hours is $41. The best round-trip flight deal from Chicago O'Hare Intl Airport to San Diego found on momondo in the last 72 hours is $114.
The fastest flight from Chicago O'Hare Intl Airport to San Diego takes 4h 20m
Direct flights go from Chicago O'Hare Intl Airport to San Diego every day.
There is 1 airport near San Diego: San Diego (SAN)
Search flight deals

  • 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 20m.

  • 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?

  • 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?

  • What is the most popular airline from Chicago O'Hare Intl Airport to San Diego?

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
Spirit AirlinesPriceFrom $93Free CancellationRating
6.3
8,046 reviews
Search Spirit Airlines flights
FrontierPriceFrom $120Free CancellationRating
5.9
3,261 reviews
Search Frontier flights
American AirlinesPriceFrom $197Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
Alaska AirlinesPriceFrom $237Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
DeltaPriceFrom $240Free CancellationRating
8.0
7,956 reviews
Search Delta flights
United AirlinesPriceFrom $255Free CancellationRating
7.4
8,858 reviews
Search United Airlines flights
SouthwestPriceFrom $296Free CancellationRating
8.0
4,244 reviews
Search Southwest flights

  • Alaska Airlines Flights From Chicago O'Hare Intl Airport to San Diego

    Across 35 Alaska Airlines flights from Chicago O'Hare Intl Airport to San Diego this week, the average price was $496, with the best Alaska Airlines deals starting from $237 round-trip. 10,000 users have rated Alaska Airlines on momondo, with an average score of 8.0/10.

  • Southwest Flights From Chicago O'Hare Intl Airport to San Diego

    Southwest is also a popular choice for this route. Southwest flight deals for Chicago O'Hare Intl Airport to San Diego start from as low as $296 round-trip, depending on your selected dates, with average Southwest deals seen on momondo around $501. Southwest operates 1 flight to San Diego from Chicago O'Hare Intl Airport in an average week. Users have rated it 8.0/10 across 4,244 reviews.

Traveling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
Coronado
El Cajon
Chula Vista
Julian
National City
La Mesa
Imperial Beach
San Ysidro
Poway
Borrego Springs
Lemon Grove
Alpine
Santee

Why 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.

An easier way to manage your San Diego trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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