Cheap flights from San Diego (SAN) to Illinois from $37
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 5/14. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
SAN — ORD
May 9 — May 161
From?
To?
1 adult, Economy
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How far in advance should I book a flight from San Diego to Illinois?
Find a great deal and save up to 133% by booking at least 52 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from San Diego to Illinois within the next two weeks, with the cheapest ticket starting at $368.
What is the cheapest month to fly from San Diego to Illinois?
Our data shows that September tends to be the cheapest month to fly to Illinois from San Diego. Users have commonly found prices around $400 for the month, but tickets can be as low as $133. Due to multiple factors, prepare for potentially higher prices in June.
When is the cheapest time to fly from San Diego to Illinois (SAN - IL)?
When flying from San Diego to Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Cheap Spirit Airlines flights from San Diego to Illinois
Explore cheap flight options specifically provided by Spirit Airlines for the route between San Diego and Illinois. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,795,183 searches. Data last updated May 4, 2024.
Take a look at some of the lowest-priced Spirit Airlines flights heading from San Diego to Illinois. Make sure to double check the flight details before booking.
Tue 6/48:41 amSAN - ORD
1 stop12h 52mSpirit Airlines
Tue 6/1110:01 pmORD - SAN
1 stop12h 33mSpirit Airlines
Deal found 5/3$100
Tue 5/289:12 pmSAN - ORD
1 stop7h 18mSpirit Airlines
Tue 6/410:52 pmORD - SAN
1 stop13h 10mSpirit Airlines
Deal found 5/4$102
Tue 6/48:41 amSAN - ORD
2 stops34h 06mSpirit Airlines
Tue 6/1110:01 pmORD - SAN
1 stop12h 33mSpirit Airlines
Deal found 5/3$106
Wed 5/298:41 amSAN - ORD
1 stop12h 48mSpirit Airlines
Tue 6/410:52 pmORD - SAN
1 stop13h 10mSpirit Airlines
Deal found 5/4$108
Tue 6/48:41 amSAN - ORD
1 stop26h 59mSpirit Airlines
Tue 6/1110:01 pmORD - SAN
1 stop12h 33mSpirit Airlines
Deal found 5/4$110
Tue 5/289:12 pmSAN - ORD
1 stop7h 18mSpirit Airlines
Tue 6/41:13 pmORD - SAN
1 stop12h 40mSpirit Airlines
Deal found 5/4$113
Tue 5/288:41 amSAN - ORD
1 stop12h 48mSpirit Airlines
Tue 6/410:52 pmORD - SAN
1 stop13h 10mSpirit Airlines
Deal found 5/3$114
Tue 5/149:12 pmSAN - ORD
1 stop7h 18mSpirit Airlines
Tue 6/410:52 pmORD - SAN
1 stop13h 10mSpirit Airlines
Deal found 5/3$115
Sat 5/1811:10 amSAN - ORD
1 stop8h 45mSpirit Airlines
Tue 5/217:08 amORD - SAN
1 stop26h 43mSpirit Airlines
Deal found 5/3$123
Cheap Frontier flights from San Diego to Illinois
Explore cheap flight options specifically provided by Frontier for the route between San Diego and Illinois. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,795,183 searches. Data last updated May 4, 2024.
Browse through some of the cheapest Frontier flights traveling from San Diego to Illinois. If these deals don't fit your criteria, make sure to check back soon as new deals are always added.
Sat 5/188:21 pmSAN - ORD
1 stop6h 39mFrontier
Mon 5/207:59 pmORD - SAN
1 stop25h 22mFrontier
Deal found 5/4$128
Tue 5/1410:05 pmSAN - MDW
1 stop11h 31mFrontier
Tue 5/217:05 amMDW - SAN
1 stop9h 56mFrontier
Deal found 5/4$129
Wed 5/1511:25 amSAN - ORD
1 stop11h 27mFrontier
Wed 6/58:23 pmORD - SAN
1 stop12h 52mFrontier
Deal found 5/4$138
Tue 5/148:00 amSAN - ORD
1 stop14h 56mFrontier
Sat 5/185:56 pmORD - SAN
1 stop15h 08mFrontier
Deal found 5/3$139
Wed 5/154:07 pmSAN - ORD
1 stop6h 49mFrontier
Sat 5/185:56 pmORD - SAN
1 stop15h 08mFrontier
Deal found 5/3$140
Fri 5/3111:09 amSAN - ORD
1 stop16h 01mFrontier
Tue 6/47:59 pmORD - SAN
1 stop25h 21mFrontier
Deal found 5/4$141
Thu 5/3011:08 amSAN - MDW
1 stop8h 19mFrontier
Tue 6/42:45 pmMDW - SAN
1 stop8h 40mFrontier
Deal found 5/4$143
Thu 5/1611:08 amSAN - ORD
1 stop8h 15mFrontier
Tue 5/218:00 amORD - SAN
1 stop7h 39mFrontier
Deal found 5/4$144
Fri 5/178:10 amSAN - MDW
1 stop25h 03mFrontier
Tue 5/216:00 amMDW - SAN
1 stop27h 04mFrontier
Deal found 5/4$146
Cheap San Diego to Illinois flights in May & June 2024
Find cheap flight options from San Diego to Illinois specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,795,183 searches. Prices were last updated on May 4, 2024.
These are some of the best deals we've found on flights to Illinois in 2024 at this time. More deals are always being added, so be sure to check back regularly.
Tue 6/48:41 amSAN - ORD
1 stop12h 52mSpirit Airlines
Tue 6/1110:01 pmORD - SAN
1 stop12h 33mSpirit Airlines
Deal found 5/3$100
Tue 5/289:12 pmSAN - ORD
1 stop7h 18mSpirit Airlines
Tue 6/410:52 pmORD - SAN
1 stop13h 10mSpirit Airlines
Deal found 5/4$102
Tue 6/48:41 amSAN - ORD
2 stops34h 06mSpirit Airlines
Tue 6/1110:01 pmORD - SAN
1 stop12h 33mSpirit Airlines
Deal found 5/3$106
Sat 6/18:21 pmSAN - ORD
1 stop6h 39mMultiple Airlines
Tue 6/410:52 pmORD - SAN
1 stop13h 10mMultiple Airlines
Deal found 5/3$108
Sat 5/117:45 amSAN - ORD
2 stops15h 33mSpirit Airlines
Tue 5/147:00 amORD - SAN
2 stops18h 53mSpirit Airlines
Deal found 5/4$113
Tue 5/288:41 amSAN - ORD
1 stop12h 48mSpirit Airlines
Tue 6/410:52 pmORD - SAN
1 stop13h 10mSpirit Airlines
Deal found 5/3$114
Tue 5/149:12 pmSAN - ORD
1 stop7h 18mSpirit Airlines
Tue 6/410:52 pmORD - SAN
1 stop13h 10mSpirit Airlines
Deal found 5/3$115
Thu 5/307:58 pmSAN - ORD
2 stops13h 40mMultiple Airlines
Tue 6/410:52 pmORD - SAN
1 stop13h 10mMultiple Airlines
Deal found 5/4$117
Sat 5/1811:10 amSAN - ORD
1 stop8h 45mSpirit Airlines
Tue 5/217:08 amORD - SAN
1 stop26h 43mSpirit Airlines
Deal found 5/3$123
San Diego to Illinois 2024 flight deals
Discover exclusive flight deals for travel between San Diego and Illinois in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,795,183 searches. Data last updated May 4, 2024.
These are some of the best deals we've found on flights to Illinois in 2024 at this time. More deals are always being added, so be sure to check back regularly.
Tue 6/48:41 amSAN - ORD
1 stop12h 52mSpirit Airlines
Tue 6/1110:01 pmORD - SAN
1 stop12h 33mSpirit Airlines
Deal found 5/3$100
Tue 5/289:12 pmSAN - ORD
1 stop7h 18mSpirit Airlines
Tue 6/410:52 pmORD - SAN
1 stop13h 10mSpirit Airlines
Deal found 5/4$102
Tue 6/48:41 amSAN - ORD
2 stops34h 06mSpirit Airlines
Tue 6/1110:01 pmORD - SAN
1 stop12h 33mSpirit Airlines
Deal found 5/3$106
Sat 6/18:21 pmSAN - ORD
1 stop6h 39mMultiple Airlines
Tue 6/410:52 pmORD - SAN
1 stop13h 10mMultiple Airlines
Deal found 5/3$108
Sat 5/117:45 amSAN - ORD
2 stops15h 33mSpirit Airlines
Tue 5/147:00 amORD - SAN
2 stops18h 53mSpirit Airlines
Deal found 5/4$113
Tue 5/288:41 amSAN - ORD
1 stop12h 48mSpirit Airlines
Tue 6/410:52 pmORD - SAN
1 stop13h 10mSpirit Airlines
Deal found 5/3$114
Tue 5/149:12 pmSAN - ORD
1 stop7h 18mSpirit Airlines
Tue 6/410:52 pmORD - SAN
1 stop13h 10mSpirit Airlines
Deal found 5/3$115
Thu 5/307:58 pmSAN - ORD
2 stops13h 40mMultiple Airlines
Tue 6/410:52 pmORD - SAN
1 stop13h 10mMultiple Airlines
Deal found 5/4$117
Sat 5/1811:10 amSAN - ORD
1 stop8h 45mSpirit Airlines
Tue 5/217:08 amORD - SAN
1 stop26h 43mSpirit Airlines
Deal found 5/3$123
Non-stop flights to Illinois from San Diego
Discover non-stop flight options from San Diego to Illinois. Find direct flights with no layovers, providing a convenient travel experience. Explore non-stop flight options based on user searches, and compare prices and availability for your desired travel dates. Over the last 7 days, Cheapflights users made 2,795,183 searches. Data last updated May 4, 2024.
For a quicker trip, book one of these direct flights from San Diego to Illinois. Users seeking other options on flights from San Diego to Illinois should update the search form at the top of the page.
Tue 5/2810:57 pmSAN - ORD
Nonstop4h 03mAmerican Airlines
Tue 6/48:17 amORD - SAN
Nonstop4h 26mAmerican Airlines
Deal found 5/4$368
Tue 8/61:16 pmSAN - ORD
Nonstop4h 16mAmerican Airlines
Sat 8/106:47 pmORD - SAN
Nonstop4h 27mAmerican Airlines
Deal found 5/4$369
Tue 8/66:20 amSAN - ORD
Nonstop4h 16mUnited Airlines
Sat 8/107:41 pmORD - SAN
Nonstop4h 19mUnited Airlines
Deal found 5/4$370
Sun 5/268:00 amSAN - ORD
Nonstop4h 10mAmerican Airlines
Tue 6/48:55 pmORD - SAN
Nonstop4h 19mAmerican Airlines
Deal found 5/4$371
Wed 5/2910:57 pmSAN - ORD
Nonstop4h 03mAmerican Airlines
Sat 6/15:05 pmORD - SAN
Nonstop4h 13mAmerican Airlines
Deal found 5/4$380
Thu 8/296:15 amSAN - ORD
Nonstop4h 15mAmerican Airlines
Wed 9/44:50 pmORD - SAN
Nonstop4h 08mAmerican Airlines
Deal found 5/4$385
Sat 8/2410:50 pmSAN - ORD
Nonstop4h 11mAmerican Airlines
Mon 9/26:50 pmORD - SAN
Nonstop4h 27mAmerican Airlines
Deal found 5/4$386
Fri 10/1810:45 pmSAN - ORD
Nonstop4h 15mAmerican Airlines
Tue 10/2210:00 amORD - SAN
Nonstop4h 24mAmerican Airlines
Deal found 5/4$388
Tue 5/2810:57 pmSAN - ORD
Nonstop4h 03mAmerican Airlines
Mon 6/38:55 pmORD - SAN
Nonstop4h 19mAmerican Airlines
Deal found 5/3$389
San Diego to Illinois flights leaving soon
Find last-minute flight options from San Diego to Illinois for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,795,183 searches. Data last updated May 4, 2024.
Users seeking a last-minute flight from San Diego to Illinois should consider booking one of these fares. Tip: verify your flight details before completing your reservation.
Sat 5/117:45 amSAN - ORD
2 stops15h 33mSpirit Airlines
Tue 5/147:00 amORD - SAN
2 stops18h 53mSpirit Airlines
Deal found 5/4$113
Tue 5/149:12 pmSAN - ORD
1 stop7h 18mSpirit Airlines
Tue 6/410:52 pmORD - SAN
1 stop13h 10mSpirit Airlines
Deal found 5/3$115
Tue 5/149:12 pmSAN - ORD
1 stop7h 18mSpirit Airlines
Tue 5/211:13 pmORD - SAN
1 stop12h 40mSpirit Airlines
Deal found 5/4$125
Sat 5/117:45 amSAN - ORD
2 stops15h 33mSpirit Airlines
Tue 5/147:00 amORD - SAN
3 stops32h 48mSpirit Airlines
Deal found 5/4$126
Sat 5/117:45 amSAN - ORD
1 stop12h 10mSpirit Airlines
Tue 5/147:00 amORD - SAN
2 stops28h 14mSpirit Airlines
Deal found 5/4$128
Tue 5/1410:05 pmSAN - MDW
1 stop11h 31mFrontier
Tue 5/217:05 amMDW - SAN
1 stop9h 56mFrontier
Deal found 5/4$129
Mon 5/138:26 pmSAN - ORD
1 stop8h 14mSpirit Airlines
Tue 6/410:52 pmORD - SAN
1 stop13h 10mSpirit Airlines
Deal found 5/3$131
Sat 5/112:19 pmSAN - ORD
1 stop8h 37mFrontier
Sat 5/185:56 pmORD - SAN
1 stop15h 08mFrontier
Deal found 5/3$139
Sat 5/119:33 amSAN - MDW
1 stop9h 06mFrontier
Sat 5/1810:33 pmMDW - SAN
1 stop12h 25mFrontier
Deal found 5/3$139
One-way flights to Illinois from San Diego
Search for one-way flight options from San Diego to Illinois. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,795,183 searches. Data last updated May 4, 2024.
Take a look at some of the one-way flights we've detected from San Diego to Illinois. Users can also find round-trip San Diego to Illinois flights by using the search form above.
Tue 5/149:12 pmSAN - STL
1 stop11h 34mSpirit Airlines
Deal found 5/2$37
Tue 5/149:12 pmSAN - STL
1 stop11h 34mSpirit Airlines
Deal found 5/4$39
Wed 5/228:41 amSAN - ORD
1 stop12h 48mSpirit Airlines
Deal found 5/3$46
Wed 6/58:14 amSAN - ORD
1 stop13h 36mSpirit Airlines
Deal found 5/4$52
Tue 5/2110:26 amSAN - ORD
1 stop8h 49mFrontier
Deal found 5/4$59
Thu 5/232:08 pmSAN - STL
1 stop5h 58mFrontier
Deal found 5/4$59
Tue 5/146:15 amSAN - STL
2 stops26h 31mSpirit Airlines
Deal found 5/2$61
Tue 6/48:41 amSAN - ORD
1 stop12h 52mSpirit Airlines
Deal found 5/3$63
Sun 6/29:12 pmSAN - STL
1 stop16h 02mSpirit Airlines
Deal found 5/3$63
Find flights from San Diego to Illinois within your budget
Customize your flight search to find flights from San Diego to Illinois 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 2,795,183 searches. Data last updated May 4, 2024.
Fly from
Any airport
Fly to
Any airport
Budget
$100 - $276
Route
Depart
Return
Price
San DiegoChicago O'Hare Intl
SAN - ORD
SANORD
San Diego
Tue 6/4
1 stop12h 52m
Chicago O'Hare Intl
Tue 6/11
1 stop12h 33m
$100
San DiegoChicago O'Hare Intl
SAN - ORD
SANORD
San Diego
Tue 5/28
1 stop7h 18m
Chicago O'Hare Intl
Tue 6/4
1 stop13h 10m
$102
San DiegoChicago O'Hare Intl
SAN - ORD
SANORD
San Diego
Tue 6/4
2 stops34h 06m
Chicago O'Hare Intl
Tue 6/11
1 stop12h 33m
$106
San DiegoChicago O'Hare Intl
SAN - ORD
SANORD
San Diego
Wed 5/29
1 stop12h 48m
Chicago O'Hare Intl
Tue 6/4
1 stop13h 10m
$108
San DiegoChicago O'Hare Intl
SAN - ORD
SANORD
San Diego
Thu 5/30
1 stop6h 39m
Chicago O'Hare Intl
Tue 6/4
1 stop13h 10m
$115
San DiegoChicago O'Hare Intl
SAN - ORD
SANORD
San Diego
Sat 5/18
1 stop6h 39m
Chicago O'Hare Intl
Mon 5/20
1 stop25h 22m
$128
San DiegoChicago O'Hare Intl
SAN - ORD
SANORD
San Diego
Wed 5/15
1 stop6h 49m
Chicago O'Hare Intl
Tue 6/4
1 stop11h 42m
$129
San DiegoChicago Midway
SAN - MDW
SANMDW
San Diego
Tue 5/14
1 stop11h 31m
Chicago Midway
Tue 5/21
1 stop9h 56m
$129
San DiegoMoline Quad-City
SAN - MLI
SANMLI
San Diego
Tue 8/27
1 stop9h 25m
Moline Quad-City
Sat 8/31
1 stop8h 03m
$276
No data available for this route at this time. Please check back soon.
Reviews of airlines servicing Illinois
Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated May 4, 2024.
To help decide which airline to fly from San Diego to Illinois, see what other customers have to say about Spirit Airlines, Frontier and United Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
6,099 reviews
Crew
8.7
Entertainment
7.8
Overall
8.2
Food
7.3
Boarding
8.3
Comfort
8.1
Reviews
1 / 10
I was very relaxed and calm so I took a brief nap. The flight was pretty smooth.
Southwest
6,099 reviews
Southwest
6,099 reviews
Crew
8.7
Entertainment
7.8
Overall
8.2
Food
7.3
Boarding
8.3
Comfort
8.1
Reviews
1 / 10
I was very relaxed and calm so I took a brief nap. The flight was pretty smooth.
9,137 reviews
Southwest
6,099 reviews
Crew
8.7
Entertainment
7.8
Overall
8.2
Food
7.3
Boarding
8.3
Comfort
8.1
Reviews
1 / 10
I was very relaxed and calm so I took a brief nap. The flight was pretty smooth.
10,838 reviews
Southwest
6,099 reviews
Crew
8.7
Entertainment
7.8
Overall
8.2
Food
7.3
Boarding
8.3
Comfort
8.1
Reviews
1 / 10
I was very relaxed and calm so I took a brief nap. The flight was pretty smooth.
2,962 reviews
Southwest
6,099 reviews
Crew
8.7
Entertainment
7.8
Overall
8.2
Food
7.3
Boarding
8.3
Comfort
8.1
Reviews
1 / 10
I was very relaxed and calm so I took a brief nap. The flight was pretty smooth.
14,728 reviews
Southwest
6,099 reviews
Crew
8.7
Entertainment
7.8
Overall
8.2
Food
7.3
Boarding
8.3
Comfort
8.1
Reviews
1 / 10
I was very relaxed and calm so I took a brief nap. The flight was pretty smooth.
Related info for your journey
Find useful and relevant information for your journey from San Diego to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes for San Diego to IllinoisSee prices for flight routes from nearby airports that may be better suited for you.
See prices for flight routes from nearby airports that may be better suited for you.
Top 6 airlines flying from San Diego to Illinois
Discover the top 6 airlines that operate flights from San Diego to Illinois. 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 2,795,183 searches. Data last updated May 4, 2024.
Search flights from San Diego to Illinois by cabin class
Find flights from San Diego to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Hourly flight availability from San Diego to Illinois
Find hourly flight availability from San Diego to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 4, 2024.
| 1%of flight departures | Early morningMidnight to 6 am |
|---|---|
| 69%of flight departures | Morning6 am to noon |
| 24%of flight departures | AfternoonNoon to 6 pm |
| 6%of flight departures | Evening6 pm to midnight |
Midnight
6 AM
Noon
6 PM
Book a flight to one of these trending destinations
User searches for flights to these destinations increased 20% or more in the past 90 days compared to other destinations
Fly with Cheapflights
Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from San Diego to Illinois?
Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from San Diego to Illinois. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.
Why should you use Cheapflights to find cheap flight tickets from San Diego to Illinois?
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 Illinois from San Diego.
Can Cheapflights find flights from San Diego to Illinois with no change fees?
Yes, we can. To see specific flights from San Diego to Illinois with no change fees, users can toggle flexible booking options after using the search form above to find flights.
Can Cheapflights notify me if prices for flights from San Diego to Illinois become cheaper?
Yes, Cheapflights offers price alerts on San Diego to Illinois flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.