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Cheap flights from Chicago to San Diego from $47

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 to San Diego departing on 5/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Chicago to San Diego

Cheap round-trip flights

These are some of the best round-trip flight deals from Chicago to San Diego that have been recently found on momondo from popular airlines, departing in the coming months.
Spirit Airlines Logo
11:50 am - 7:53 pmORD-SAN
10h 03m1 stop
Spirit Airlines Logo
8:48 pm - 10:55 amSAN-ORD
12h 07m1 stop
$94Spirit Airlines
Find Deal
Wed, May 28 - Tue, Jun 3
Spirit Airlines Logo
11:50 am - 7:53 pmORD-SAN
10h 03m1 stop
Spirit Airlines Logo
8:48 pm - 10:55 amSAN-ORD
12h 07m1 stop
$107Spirit Airlines
Find Deal
Wed, May 28 - Tue, Jun 3
Spirit Airlines Logo
9:02 pm - 7:13 amORD-SAN
12h 11m1 stop
Spirit Airlines Logo
8:48 pm - 5:25 amSAN-ORD
6h 37m1 stop
$119Spirit Airlines
Find Deal
Tue, May 20 - Wed, May 28
Spirit Airlines Logo
9:02 pm - 7:13 amORD-SAN
12h 11m1 stop
Spirit Airlines Logo
8:48 pm - 10:55 amSAN-ORD
12h 07m1 stop
$121Spirit Airlines
Find Deal
Wed, May 28 - Wed, Jun 4
Frontier Logo
1:56 pm - 4:08 pmORD-SAN
4h 12mnonstop
Frontier Logo
4:53 pm - 10:56 pmSAN-ORD
4h 03mnonstop
$136Frontier
Find Deal
Sat, Jun 14 - Tue, Jun 17
Frontier Logo
1:40 pm - 4:00 pmORD-SAN
4h 20mnonstop
Frontier Logo
4:53 pm - 11:16 pmSAN-ORD
4h 23mnonstop
$146Frontier
Find Deal
Sat, Jul 26 - Sat, Aug 2
United Airlines Logo
1:15 pm - 3:37 pmORD-SAN
4h 22mnonstop
United Airlines Logo
5:00 pm - 11:15 pmSAN-ORD
4h 15mnonstop
$237United Airlines
Find Deal
Sat, May 31 - Wed, Jun 4
Southwest Logo
12:35 pm - 2:55 pmMDW-SAN
4h 20mnonstop
Southwest Logo
5:55 pm - 11:55 pmSAN-MDW
4h 00mnonstop
$237Southwest
Find Deal
Wed, May 28 - Wed, Jun 4
Southwest Logo
12:35 pm - 2:55 pmMDW-SAN
4h 20mnonstop
Southwest Logo
8:50 pm - 5:20 amSAN-MDW
6h 30m1 stop
$247Southwest
Find Deal
Wed, May 28 - Wed, Jun 4
American Airlines Logo
6:50 am - 9:12 amORD-SAN
4h 22mnonstop
American Airlines Logo
10:39 pm - 4:47 amSAN-ORD
4h 08mnonstop
$277American Airlines
Find Deal
Thu, May 22 - Mon, May 26

Spirit Airlines flights from Chicago to San Diego

Our best Spirit Airlines deals on Chicago to San Diego flight tickets
Spirit Airlines
May 28
ORD11:50 amChicago O'Hare Intl
10h 03m
1 stop
SAN7:53 pmSan Diego
Jun 3
SAN8:48 pmSan Diego
12h 07m
1 stop
ORD10:55 amChicago O'Hare Intl
Spirit Airlines
May 28
ORD11:50 amChicago O'Hare Intl
10h 03m
1 stop
SAN7:53 pmSan Diego
Jun 3
SAN8:48 pmSan Diego
12h 07m
1 stop
ORD10:55 amChicago O'Hare Intl
Spirit Airlines
May 20
ORD9:02 pmChicago O'Hare Intl
12h 11m
1 stop
SAN7:13 amSan Diego
May 28
SAN8:48 pmSan Diego
6h 37m
1 stop
ORD5:25 amChicago O'Hare Intl

Frontier flights from Chicago to San Diego

Our best Frontier deals on Chicago to San Diego flight tickets
Frontier
Jun 14
ORD1:56 pmChicago O'Hare Intl
4h 12m
SAN4:08 pmSan Diego
Jun 17
SAN4:53 pmSan Diego
4h 03m
ORD10:56 pmChicago O'Hare Intl
Frontier
Jul 26
ORD1:40 pmChicago O'Hare Intl
4h 20m
SAN4:00 pmSan Diego
Aug 2
SAN4:53 pmSan Diego
4h 23m
ORD11:16 pmChicago O'Hare Intl
Frontier
Jun 13
ORD1:56 pmChicago O'Hare Intl
4h 12m
SAN4:08 pmSan Diego
Jun 17
SAN4:53 pmSan Diego
4h 03m
ORD10:56 pmChicago O'Hare Intl

See travel insights to San Diego from

How to get the cheapest flight ticket from Chicago 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 typical price of a round-trip flight between Chicago and San Diego?

What is the cheapest month to fly to San Diego?

If you are unable to visit San Diego during the month of February, then departing from Chicago during the month September is also very affordable. Most momondo users find prices during this month for around $373.

What is the cheapest day to depart on your flight to San Diego?

The cheapest day to depart from Chicago to San Diego is on a Tuesday. Travelers who choose to depart for San Diego on a Tuesday will often find tickets for as low as $421. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $499. 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 in the afternoon when flights can be purchased for as low as $438. Flights at noon are often more expensive with an average ticket price of $478.

What is the cheapest Chicago to San Diego flight route?

Fly from Chicago O'Hare Intl to San Diego for the best Chicago - 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 when booking 11 weeks ahead of your departure date. In general, you can expect to find flights to San Diego for around $419 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 for as low as $343 on momondo.

What cabin class options are available on Chicago to San Diego flights?

There are 4 cabin classes available to choose from on Chicago to San Diego flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Chicago to San Diego flight prices changed over time?

As of April 2025, prices for Chicago to San Diego flights are approximately 13% cheaper when compared to flights at the same time last year.

When to book flights from Chicago to San Diego

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

Cheap Chicago to San Diego (CHI to SAN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago to San Diego

Best Price Found

$47

Fastest flight time

4h 10m

Direct flights

Every day

Airports in San Diego

1 airport
The best one-way flight to San Diego from Chicago in the past 72 hours is $47. The best round-trip flight deal from Chicago to San Diego found on momondo in the last 72 hours is $94.
The fastest flight from Chicago to San Diego takes 4h 10m
Direct flights go from Chicago to San Diego every day.
There is 1 airport near San Diego: San Diego (SAN)

  • How far is Chicago to San Diego by plane?

    There are 1730.3 mi between Chicago and San Diego. In terms of flight time, this usually takes a little over 4h 10m.

  • When did momondo last update prices for flights from Chicago to San Diego Airport?

    Prices for flights from Chicago to San Diego Airport refresh daily.

  • How many operators does momondo search for flights from Chicago to San Diego Airport?

  • How old do you have to be to fly from Chicago to San Diego Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Chicago to San Diego Airport.

  • What documentation or ID do you need to fly to San Diego Airport?

    The travel and health documents you'll need for your trip to San Diego Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at San Diego Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Chicago to San Diego?

  • What is the most popular airline from Chicago to San Diego?


Best airlines flying from Chicago to San Diego

Compare and see reviews for airlines that fly from Chicago to San Diego with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $102Free CancellationRating
6.3
7,956 reviews
Search Spirit Airlines flights
FrontierPriceFrom $108Free CancellationRating
5.9
3,284 reviews
Search Frontier flights
SouthwestPriceFrom $204Free CancellationRating
8.0
4,295 reviews
Search Southwest flights
American AirlinesPriceFrom $217Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $240Free CancellationRating
8.0
7,929 reviews
Search Delta flights
United AirlinesPriceFrom $253Free CancellationRating
7.4
8,696 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $403Free CancellationRating
8.0
9,961 reviews
Search Alaska Airlines flights
  • Southwest Flights From Chicago to San Diego

    Southwest flies from Chicago to San Diego around 26 times per week, with 4,295 momondo users rating the airline 8.0/10. The cheapest Southwest deal from Chicago to San Diego in the last 72 hours was $204 (round-trip), much lower than the average airfare cost of $475 for Southwest flights on this route.

  • Alaska Airlines Flights From Chicago to San Diego

    $403 is the best Alaska Airlines flight deal from Chicago to San Diego found on momondo over the last 72 hours. The average Alaska Airlines ticket price found was closer to $653, however, with flight time and availability significantly affecting the price. Alaska Airlines (8.0/10 from 9,961 user reviews) flies into San Diego from Chicago 15 times in an average week so prices can vary.


Traveling to a place near San Diego?

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

Flights from Chicago to San Diego with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Chicago to San Diego?

momondo provides multiple filters to help you find the best flight to San Diego from Chicago. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Chicago to San Diego right now. Can momondo alert me if prices change?

If you are simply researching potential flights to San Diego, momondo offers a useful price alert feature which will track prices for flights to San Diego from Chicago and alert you when they change.


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