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Cheap flights from San Diego (SAN) to Illinois from $46

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 8/27. 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
Jun 17 — Jun 241
From?
To?
Mon 6/17
Mon 6/24
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 27% 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 $317.

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.

What is the cheapest time of day to fly from SAN to 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 San Diego to Illinois flights in June & July 2024

Find cheap flight options from San Diego to Illinois specifically for the months of June and July 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,117,830 searches. Prices were last updated on June 12, 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.
Wed 7/172:49 pmSAN - STL
1 stop5h 20mFrontier
Mon 7/2212:12 pmSTL - SAN
1 stop6h 10mFrontier
Deal found 6/11$144
Wed 7/172:49 pmSAN - STL
1 stop5h 20mFrontier
Tue 7/3010:32 pmSTL - SAN
1 stop22h 53mFrontier
Deal found 6/11$150
Wed 7/102:44 pmSAN - STL
1 stop5h 25mFrontier
Sat 8/178:00 pmSTL - SAN
1 stop12h 24mFrontier
Deal found 6/10$152
Thu 7/118:26 amSAN - ORD
1 stop9h 08mSpirit Airlines
Thu 7/186:19 pmORD - SAN
1 stop7h 38mSpirit Airlines
Deal found 6/11$159
Thu 7/116:20 pmSAN - ORD
1 stop9h 13mFrontier
Thu 7/188:40 pmORD - SAN
1 stop15h 04mFrontier
Deal found 6/11$161
Tue 6/188:24 pmSAN - STL
1 stop12h 18mFrontier
Tue 6/253:47 pmSTL - SAN
1 stop7h 35mFrontier
Deal found 6/12$162
Wed 7/178:34 amSAN - ORD
1 stop8h 51mMultiple Airlines
Tue 7/238:26 pmORD - SAN
1 stop24h 59mMultiple Airlines
Deal found 6/11$170
Thu 7/118:26 amSAN - ORD
1 stop9h 08mSpirit Airlines
Mon 7/151:11 pmORD - SAN
1 stop20h 26mSpirit Airlines
Deal found 6/11$171
Thu 7/118:20 amSAN - MDW
1 stop18h 25mFrontier
Mon 7/156:15 amMDW - SAN
1 stop12h 46mFrontier
Deal found 6/11$171

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 3,117,830 searches. Data last updated June 12, 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.
Thu 8/228:22 amSAN - ORD
1 stop13h 33mSpirit Airlines
Mon 8/268:35 pmORD - SAN
1 stop12h 57mSpirit Airlines
Deal found 6/12$123
Sat 8/173:05 pmSAN - ORD
1 stop8h 54mMultiple Airlines
Mon 8/268:35 pmORD - SAN
1 stop12h 57mMultiple Airlines
Deal found 6/11$130
Tue 8/137:24 amSAN - ORD
1 stop10h 57mFrontier
Tue 8/208:00 amORD - SAN
1 stop7h 29mFrontier
Deal found 6/10$131
Tue 8/208:22 amSAN - ORD
1 stop13h 33mSpirit Airlines
Mon 8/268:35 pmORD - SAN
1 stop12h 57mSpirit Airlines
Deal found 6/11$132
Tue 8/208:36 amSAN - MDW
1 stop10h 26mFrontier
Sat 8/246:00 amMDW - SAN
1 stop9h 54mFrontier
Deal found 6/11$132
Fri 8/238:22 amSAN - ORD
1 stop13h 33mSpirit Airlines
Tue 8/278:35 pmORD - SAN
1 stop12h 57mSpirit Airlines
Deal found 6/11$136
Thu 9/53:28 pmSAN - ORD
1 stop7h 55mFrontier
Tue 9/108:00 amORD - SAN
1 stop7h 29mFrontier
Deal found 6/10$140
Sat 8/178:36 amSAN - MDW
1 stop10h 37mFrontier
Sat 8/246:00 amMDW - SAN
1 stop9h 54mFrontier
Deal found 6/11$140
Wed 9/257:24 amSAN - ORD
1 stop15h 39mFrontier
Sun 9/297:30 pmORD - SAN
1 stop26h 11mFrontier
Deal found 6/11$141

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 3,117,830 searches. Data last updated June 12, 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.
Tue 6/188:24 pmSAN - STL
1 stop12h 18mFrontier
Tue 6/253:47 pmSTL - SAN
1 stop7h 35mFrontier
Deal found 6/12$162
Tue 6/188:24 pmSAN - STL
1 stop12h 18mFrontier
Sat 6/227:29 pmSTL - SAN
1 stop14h 16mFrontier
Deal found 6/11$174
Mon 6/178:06 amSAN - ORD
1 stop10h 42mFrontier
Tue 6/188:23 pmORD - SAN
1 stop25h 00mFrontier
Deal found 6/11$188
Sat 6/228:24 pmSAN - MDW
1 stop6h 57mFrontier
Sat 6/295:40 amMDW - SAN
1 stop13h 15mFrontier
Deal found 6/11$193
Thu 6/2010:14 pmSAN - STL
1 stop11h 40mFrontier
Wed 6/268:02 pmSTL - SAN
1 stop12h 59mFrontier
Deal found 6/12$199
Wed 6/192:52 pmSAN - ORD
1 stop9h 07mFrontier
Sat 6/2210:11 pmORD - SAN
1 stop10h 50mFrontier
Deal found 6/11$200
Wed 6/194:26 pmSAN - ORD
1 stop11h 58mSpirit Airlines
Tue 6/2510:01 pmORD - SAN
1 stop12h 33mSpirit Airlines
Deal found 6/10$201
Thu 6/2010:14 pmSAN - STL
1 stop11h 40mFrontier
Wed 6/268:02 pmSTL - SAN
1 stop12h 59mFrontier
Deal found 6/11$203
Thu 6/2010:14 pmSAN - STL
1 stop11h 40mFrontier
Wed 6/268:02 pmSTL - SAN
1 stop19h 57mFrontier
Deal found 6/12$204

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 3,117,830 searches. Data last updated June 12, 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 8/278:22 amSAN - ORD
1 stop13h 33mSpirit Airlines
Deal found 6/10$46
Wed 7/172:49 pmSAN - STL
1 stop5h 20mFrontier
Deal found 6/12$59
Tue 10/18:40 pmSAN - ORD
1 stop6h 07mFrontier
Deal found 6/11$66
Tue 10/18:40 pmSAN - MDW
1 stop7h 53mFrontier
Deal found 6/11$66
Wed 9/116:21 pmSAN - ORD
1 stop8h 26mFrontier
Deal found 6/11$67
Tue 8/278:40 pmSAN - MDW
1 stop7h 53mFrontier
Deal found 6/10$67
Sat 8/242:54 pmSAN - ORD
1 stop7h 17mFrontier
Deal found 6/12$68
Thu 7/118:26 amSAN - ORD
1 stop9h 08mSpirit Airlines
Deal found 6/11$69
Wed 9/1112:45 pmSAN - ORD
2 stops9h 20mSpirit Airlines
Deal found 6/11$70

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 3,117,830 searches. Data last updated June 12, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$123 - $236

Route

Depart

Return

Price

San DiegoChicago O'Hare Intl

SAN - ORD

SANORD

San Diego

Thu 8/22

1 stop13h 33m

Chicago O'Hare Intl

Mon 8/26

1 stop12h 57m

$123

San DiegoChicago O'Hare Intl

SAN - ORD

SANORD

San Diego

Sat 8/17

1 stop8h 54m

Chicago O'Hare Intl

Mon 8/26

1 stop12h 57m

$130

San DiegoChicago O'Hare Intl

SAN - ORD

SANORD

San Diego

Tue 8/13

1 stop10h 57m

Chicago O'Hare Intl

Tue 8/20

1 stop7h 29m

$131

San DiegoChicago O'Hare Intl

SAN - ORD

SANORD

San Diego

Tue 8/20

1 stop13h 33m

Chicago O'Hare Intl

Mon 8/26

1 stop12h 57m

$132

San DiegoChicago Midway

SAN - MDW

SANMDW

San Diego

Tue 8/20

1 stop10h 26m

Chicago Midway

Sat 8/24

1 stop9h 54m

$132

San DiegoChicago O'Hare Intl

SAN - ORD

SANORD

San Diego

Fri 8/9

Nonstop4h 11m

Chicago O'Hare Intl

Wed 8/14

Nonstop4h 19m

$145

San DiegoChicago O'Hare Intl

SAN - ORD

SANORD

San Diego

Wed 8/21

1 stop8h 26m

Chicago O'Hare Intl

Thu 8/22

1 stop12h 57m

$146

San DiegoLambert-St Louis

SAN - STL

SANSTL

San Diego

Fri 8/16

1 stop7h 12m

Lambert-St Louis

Sun 8/18

1 stop8h 25m

$198

San DiegoChicago O'Hare Intl

SAN - ORD

SANORD

San Diego

Fri 10/18

1 stop9h 07m

Chicago O'Hare Intl

Tue 10/22

1 stop6h 53m

$236

Flights are sorted by cheapest first

Deals found on 6/12

No data available for this route at this time. Please check back soon.

Best time to book a flight from San Diego to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from San Diego with our price prediction graph.
Estimated round-trip 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.

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 June 12, 2024.
To help decide which airline to fly from San Diego to Illinois, see what other customers have to say about Delta, Spirit Airlines and Frontier. 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.
Alaska Airlines
8.1
Very good
9,269 reviews

Crew

8.6

Overall

8.1

Food

7.3

Entertainment

7.3

Boarding

8.2

Comfort

7.9

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

Alaska Airlines
8.1
Very good
9,269 reviews
Alaska Airlines
8.1
Very good
9,269 reviews

Crew

8.6

Overall

8.1

Food

7.3

Entertainment

7.3

Boarding

8.2

Comfort

7.9

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

Delta
8.0
Very good
10,000 reviews
Alaska Airlines
8.1
Very good
9,269 reviews

Crew

8.6

Overall

8.1

Food

7.3

Entertainment

7.3

Boarding

8.2

Comfort

7.9

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

WestJet
7.5
Good
2,838 reviews
Alaska Airlines
8.1
Very good
9,269 reviews

Crew

8.6

Overall

8.1

Food

7.3

Entertainment

7.3

Boarding

8.2

Comfort

7.9

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

United Airlines
7.4
Good
10,000 reviews
Alaska Airlines
8.1
Very good
9,269 reviews

Crew

8.6

Overall

8.1

Food

7.3

Entertainment

7.3

Boarding

8.2

Comfort

7.9

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

American Airlines
7.3
Good
10,000 reviews
Alaska Airlines
8.1
Very good
9,269 reviews

Crew

8.6

Overall

8.1

Food

7.3

Entertainment

7.3

Boarding

8.2

Comfort

7.9

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

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.

  • What airport do you fly from for flights from San Diego to Illinois?

    Located just 2.6 mi from the city center, San Diego (SAN) is the airport most travelers will use when flying to Illinois from San Diego.

  • Can I find flights from San Diego to Illinois for under $200 on Cheapflights?

    Yes, there are multiple flights from San Diego to Illinois for under $200. The cheapest flight booked recently is on Spirit Airlines for just $123, but on average you can expect to pay $138.

  • Are there nonstop flights from San Diego to Illinois for under $200 on Cheapflights?

    Cheapflights has at least 20 direct flights from San Diego to Illinois under $200. A good price for a nonstop flight from San Diego to Illinois is less than $264.

  • Are there last-minute flights available from San Diego to Illinois for under $200?

    There are currently 20+ open flights from San Diego to Illinois within the next 7 days for less than $200.

  • What days are nonstop flights available from San Diego to Illinois?

    Days when nonstop flights are available for this flight are: Sunday, Monday, Wednesday, Friday, Saturday.

  • How many flights depart from San Diego to Illinois on average per day?

    Travelers can expect 7 flights from San Diego to Illinois on average per day.
    Morning (6am - Noon) - 100% of flight departures

  • How long is the flight from San Diego to Illinois?

    There are many flights that can get you from San Diego to Illinois in 4h 11m. Fly via Spirit Airlines, Frontier, or United Airlines to get the fastest option. There are 1729 mi between San Diego and Illinois. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from San Diego to Illinois one-way?

    One-way options have recently been found by users for as low as $46 on Spirit Airlines. Other airlines that offer cheap prices include Frontier from $59 and United Airlines from $73 one-way.

  • What are the most popular routes from San Diego to Illinois?

    While some choose either San Diego - Chicago Midway or San Diego - Lambert-St Louis, San Diego - Chicago O'Hare Intl is the most popular route from San Diego to Illinois.

  • What are the most reliable airlines from San Diego to Illinois?

    The top 3 most reliable airlines when flying from San Diego to Illinois are Scandinavian Airlines (96%), Austrian Airlines (92%) and SWISS (88%).

  • What are the cheapest flights from San Diego to Illinois?

    While on average a flight from San Diego to Illinois is generally $927, our data shows the cheapest flight currently is $149. When looking at the most popular route, (San Diego - Chicago O'Hare Intl), you can expect to pay $118 for that flight.

  • What does SAN to ORD mean?

    This is defined as San Diego Airport (SAN) and Chicago O'Hare Intl Airport (ORD). Codes like Chicago O'Hare Intl Airport are often used to just call airports uniquely. Chicago Midway Airport (MDW), Moline Quad-City Airport (MLI), Greater Peoria Airport (PIA), Bloomington-Normal Airport (BMI), Springfield Capital Airport (SPI) are some additional IATA codes for airports related to your trip.

  • Can I find deals for flights from San Diego to Illinois that include extra baggage allowance?

    The amount of baggage you can bring on your San Diego to Illinois flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from San Diego to Illinois with specific airlines?

    Yes, Cheapflights allows you to browse and filter San Diego to Illinois flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from San Diego to Illinois that include hotel bookings?

    Yes. In addition to deals on San Diego to Illinois flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Diego to Illinois?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Diego to Illinois.

  • Can I find deals for business class flights from San Diego to Illinois?

    Yes. Cheapflights offers flight deals from San Diego to Illinois by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from San Diego to Illinois that allow pets onboard?

    Many airlines flying from San Diego to Illinois offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from San Diego to Illinois?

    Yes, you can often find last-minute deals on San Diego to Illinois flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the San Diego to Illinois flight deals updated?

    The San Diego to Illinois flight deals you see on this page were last updated on 6/12.

  • What are the most popular airlines that fly from San Diego to Illinois?

    The most popular airlines flying from San Diego to Illinois are American Airlines, Alaska Airlines and Delta. Something to consider prior to booking your flight.

  • What is the cheapest month to book a flight from San Diego to Illinois?

    Currently, February is the cheapest month in which you can book a flight from San Diego to Illinois (average of $244). Flying from San Diego to Illinois in July is currently the most expensive (average of $320). 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.

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Alternative routes for San Diego to Illinois
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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 3,117,830 searches. Data last updated June 12, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$91Average$194FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$113Average$220FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$212Average$501FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$218Average$543FlexibilityNo cancel feeOn-time69%
DeltaCheapest$236Average$409FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$352Average$470FlexibilityNo cancel feeOn-time75%
Miami to Cancún flights
Baltimore to Fort Lauderdale flights
Boston to Houston flights
San Francisco to Sydney flights
Sacramento to Maui flights
USA to England flights
Boston to Las Vegas flights
USA to India flights
New York to Vancouver flights
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USA to Singapore flights
San Diego to Indiana flights

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.
First Class
Business Class
Prem Econ Class
Economy 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 June 12, 2024.
9%of flight departuresEarly morningMidnight to 6 am
53%of flight departuresMorning6 am to noon
29%of flight departuresAfternoonNoon to 6 pm
9%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

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