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Cheap flights from Illinois to San Diego from $61

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to San Diego departing on 1/9. 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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Find the cheapest flights from Illinois to San Diego

Cheap round-trip flights

These are some of the best round-trip flight deals from Illinois to San Diego that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from Illinois to San Diego.

Cheap last minute flights

Planning a quick getaway from Illinois to San Diego? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to San Diego, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from Illinois to San Diego

Find recent round-trip train or bus tickets from Illinois to San Diego.

All round-trip flight deals to San Diego

The cheapest plane tickets to San Diego found on KAYAK recently.
10:47 pm - 8:58 amORD-SAN
12h 11m1 stop
1:31 pm - 5:31 amSAN-ORD
14h 00m1 stop
$123Spirit Airlines
Find Deal
Thu, Jan 9 - Mon, Jan 13
10:47 pm - 8:58 amORD-SAN
12h 11m1 stop
6:15 am - 9:52 pmSAN-ORD
13h 37m1 stop
$125Spirit Airlines
Find Deal
Thu, Jan 9 - Thu, Jan 16
8:25 pm - 7:06 pmORD-SAN
24h 41m1 stop
6:25 am - 12:32 amSAN-ORD
16h 07m1 stop
$127Frontier
Find Deal
Fri, Jan 10 - Fri, Jan 17
8:15 am - 11:49 pmMDW-SAN
17h 34m1 stop
2:32 pm - 12:17 amSAN-MDW
7h 45m1 stop
$138Frontier
Find Deal
Wed, Jan 15 - Wed, Jan 22
8:44 pm - 7:42 amORD-SAN
12h 58m1 stop
7:26 pm - 5:31 amSAN-ORD
8h 05m1 stop
Fri, Jan 10 - Mon, Jan 13
4:21 pm - 10:27 amORD-SAN
20h 06m1 stop
6:15 am - 10:57 pmSAN-ORD
14h 42m1 stop
Sat, Jan 4 - Wed, Jan 8
3:28 pm - 9:03 pmMLI-SAN
7h 35m1 stop
6:15 am - 2:56 pmSAN-MLI
6h 41m1 stop
$238American Airlines
Find Deal
Sat, Feb 8 - Wed, Feb 12
5:00 am - 11:17 amPIA-SAN
8h 17m1 stop
12:08 pm - 10:04 pmSAN-PIA
7h 56m1 stop
$238American Airlines
Find Deal
Wed, Jan 8 - Tue, Jan 28
2:49 pm - 10:33 pmSTL-SAN
9h 44m1 stop
6:52 pm - 1:53 pmSAN-STL
17h 01m1 stop
$276Alaska Airlines
Find Deal
Thu, Jan 23 - Mon, Jan 27
2:49 pm - 7:40 amSTL-SAN
18h 51m2 stops
7:00 am - 11:59 pmSAN-STL
14h 59m1 stop
$299Alaska Airlines
Find Deal
Mon, Feb 3 - Fri, Feb 7
10:47 pm - 8:58 amORD-SAN
12h 11m1 stop
$61Spirit Airlines
Find Deal
Thu, Jan 9
8:15 am - 11:49 pmMDW-SAN
17h 34m1 stop
$62Frontier
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Wed, Jan 15
6:59 pm - 11:58 pmSTL-SAN
6h 59m1 stop
$138Delta
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Thu, Jan 23
10:57 am - 6:51 pmMDW-SAN
9h 54m1 stop
$150Delta
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Sat, Feb 1
12:15 pm - 8:58 amSTL-SAN
22h 43m3 stops
Wed, Jan 8
7:00 am - 8:35 pmSTL-SAN
15h 35m2 stops
$163Alaska Airlines
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Tue, Feb 25
7:00 pm - 7:36 amORD-SAN
14h 36m1 stop
$176Alaska Airlines
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Fri, Mar 14
5:36 pm - 10:30 pmSTL-SAN
6h 54m1 stop
$183United Airlines
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Sun, Feb 23
11:45 am - 10:18 pmORD-SAN
12h 33m3 stops
Fri, Jan 24
9:44 am - 8:39 pmSTL-SAN
12h 55m2 stops
$188United Airlines
Find Deal
Thu, Jan 23
6:00 am - 6:26 pmORD-SAN
14h 26m1 stop
2:52 pm - 11:18 pmSAN-ORD
6h 26m1 stop
$263Frontier
Find Deal
Fri, Nov 29 - Mon, Dec 2
7:00 am - 6:26 pmMDW-SAN
13h 26m1 stop
6:25 am - 8:42 pmSAN-MDW
12h 17m1 stop
$281Frontier
Find Deal
Fri, Nov 29 - Mon, Dec 2
6:00 am - 11:56 pmORD-SAN
19h 56m1 stop
10:10 am - 2:26 pmSAN-ORD
26h 16m1 stop
Fri, Nov 29 - Wed, Dec 11
6:00 am - 7:33 amORD-SAN
27h 33m1 stop
6:15 am - 5:30 amSAN-ORD
21h 15m1 stop
Fri, Nov 29 - Thu, Dec 5
1:09 pm - 6:40 amORD-SAN
19h 31m2 stops
7:15 pm - 5:30 amSAN-ORD
8h 15m1 stop
$321Spirit Airlines
Find Deal
Fri, Nov 29 - Thu, Dec 5
9:48 pm - 11:56 pmMDW-SAN
28h 08m1 stop
8:38 am - 8:46 pmSAN-MDW
10h 08m1 stop
$335Frontier
Find Deal
Wed, Nov 27 - Fri, Nov 29
1:09 pm - 6:40 amORD-SAN
19h 31m2 stops
11:20 am - 5:30 amSAN-ORD
16h 10m2 stops
$343Spirit Airlines
Find Deal
Fri, Nov 29 - Wed, Dec 4
7:13 am - 1:49 pmPIA-SAN
8h 36m1 stop
9:55 pm - 10:19 amSAN-PIA
10h 24m1 stop
$453American Airlines
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Wed, Nov 27 - Mon, Dec 2
10:49 am - 6:27 pmPIA-SAN
9h 38m2 stops
9:55 pm - 10:19 amSAN-PIA
10h 24m1 stop
$458American Airlines
Find Deal
Wed, Nov 27 - Mon, Dec 2
9:20 am - 8:34 pmORD-SAN
13h 14m1 stop
6:05 pm - 11:22 amSAN-ORD
15h 17m1 stop
$549Sun Country Air
Find Deal
Sat, Nov 30 - Wed, Dec 11
5:45 pm - 8:10 pmORD-SAN
4h 25mnonstop
1:28 pm - 7:38 pmSAN-ORD
4h 10mnonstop
$391American Airlines
Find Deal
Sat, Jan 18 - Tue, Jan 21
4:15 pm - 6:45 pmMDW-SAN
4h 30mnonstop
2:35 pm - 8:25 pmSAN-MDW
3h 50mnonstop
$392Southwest
Find Deal
Tue, Jan 21 - Sat, Jan 25
7:42 pm - 10:17 pmORD-SAN
4h 35mnonstop
2:14 pm - 8:25 pmSAN-ORD
4h 11mnonstop
$410United Airlines
Find Deal
Tue, Dec 24 - Tue, Dec 31
5:30 pm - 7:51 pmORD-SAN
4h 21mnonstop
1:28 pm - 7:38 pmSAN-ORD
4h 10mnonstop
$431American Airlines
Find Deal
Tue, Dec 31 - Tue, Jan 7
8:40 am - 11:20 amMDW-SAN
4h 40mnonstop
9:20 am - 3:15 pmSAN-MDW
3h 55mnonstop
$432Southwest
Find Deal
Tue, Jan 14 - Sat, Jan 18
5:45 pm - 8:03 pmORD-SAN
4h 18mnonstop
6:35 am - 12:51 pmSAN-ORD
4h 16mnonstop
$442American Airlines
Find Deal
Wed, Dec 18 - Wed, Dec 25
7:40 pm - 10:00 pmMDW-SAN
4h 20mnonstop
4:50 pm - 10:40 pmSAN-MDW
3h 50mnonstop
$443Southwest
Find Deal
Wed, Dec 18 - Wed, Dec 25
7:42 pm - 10:17 pmORD-SAN
4h 35mnonstop
4:55 pm - 10:58 pmSAN-ORD
4h 03mnonstop
$450United Airlines
Find Deal
Tue, Dec 24 - Thu, Jan 2
2:56 pm - 5:25 pmORD-SAN
4h 29mnonstop
10:39 pm - 4:42 amSAN-ORD
4h 03mnonstop
$683Alaska Airlines
Find Deal
Mon, Dec 30 - Fri, Jan 3
9:07 pm - 11:40 pmORD-SAN
4h 33mnonstop
10:39 pm - 4:42 amSAN-ORD
4h 03mnonstop
$723Alaska Airlines
Find Deal
Sun, Dec 29 - Fri, Jan 3

Spirit Airlines flights from Illinois to San Diego

Our best Spirit Airlines deals on Illinois to San Diego flight tickets
Spirit Airlines
Jan 9
ORD10:47 pmChicago O'Hare Intl
12h 11m
1 stop
SAN8:58 amSan Diego
Jan 13
SAN1:31 pmSan Diego
14h 00m
1 stop
ORD5:31 amChicago O'Hare Intl
Spirit Airlines
Jan 9
ORD10:47 pmChicago O'Hare Intl
12h 11m
1 stop
SAN8:58 amSan Diego
Jan 16
SAN6:15 amSan Diego
13h 37m
1 stop
ORD9:52 pmChicago O'Hare Intl
Spirit Airlines
Dec 16
ORD9:53 pmChicago O'Hare Intl
13h 22m
1 stop
SAN9:15 amSan Diego
Jan 7
SAN7:16 pmSan Diego
8h 14m
1 stop
ORD5:30 amChicago O'Hare Intl

American Airlines flights from Illinois to San Diego

Our best American Airlines deals on Illinois to San Diego flight tickets
American Airlines
Feb 8
MLI3:28 pmMoline Quad-City
7h 35m
1 stop
SAN9:03 pmSan Diego
Feb 12
SAN6:15 amSan Diego
6h 41m
1 stop
MLI2:56 pmMoline Quad-City
American Airlines
Jan 8
PIA5:00 amGreater Peoria
8h 17m
1 stop
SAN11:17 amSan Diego
Jan 28
SAN6:33 amSan Diego
11h 25m
2 stops
PIA7:58 pmGreater Peoria
American Airlines
Jan 8
PIA7:40 amGreater Peoria
12h 52m
2 stops
SAN6:32 pmSan Diego
Jan 28
SAN6:33 amSan Diego
7h 28m
2 stops
PIA4:01 pmGreater Peoria

See travel insights to San Diego from

How to get the cheapest flight ticket from Illinois 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 April, then departing from Illinois during the month May 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 Illinois 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 $374. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $469. 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 evening when flights can be purchased for as low as $388. Flights at noon are often more expensive with an average ticket price of $451.

What is the cheapest Illinois to San Diego flight route?

Fly from Chicago O'Hare Intl to San Diego for the best Illinois - San Diego flight prices

How far in advance should I book a flight to San Diego?

Most flyers found that booking tickets 55 days in advance of their planned departure date is the best time to get cheap flights to San Diego. During this timeframe, flight prices are around $407. However, in the past 72 hours, people saw flights from Illinois for as low as $308.

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

There are 4 cabin classes available to choose from on Illinois 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 Illinois to San Diego flights?

You could potentially save up to 68% on your flight if you consider stops on a Illinois to San Diego flight.

Cheap Illinois to San Diego flight deals and tips

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

Best Price Found

$61

Fastest flight time

3h 55m

Direct flights

Every day

Airports in San Diego

1 airport
The best one-way flight to San Diego from Illinois in the past 72 hours is $61. The best round-trip flight deal from Illinois to San Diego found on momondo in the last 72 hours is $123.
The fastest flight from Illinois to San Diego takes 3h 55m
Direct flights go from Illinois to San Diego every day.
There is 1 airport near San Diego: San Diego (SAN)

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

    Prices for flights from Illinois to San Diego Airport were last updated today.

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

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


Best airlines flying from Illinois to San Diego

Compare and see reviews for airlines that fly from Illinois to San Diego with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $105Free CancellationRating
6.1
3,526 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $107Free CancellationRating
6.3
8,176 reviews
Search Spirit Airlines flights
DeltaPriceFrom $171Free CancellationRating
8.0
8,734 reviews
Search Delta flights
American AirlinesPriceFrom $185Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $201Free CancellationRating
8.1
4,984 reviews
Search Southwest flights
United AirlinesPriceFrom $245Free CancellationRating
7.4
9,156 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $329Free CancellationRating
8.0
9,475 reviews
Search Alaska Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to San Diego?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Illinois to San Diego. momondo saves you time and could save you money on your trip.

Can I find flights from Illinois to San Diego with flexible booking policies on momondo?

momondo does allow users to show only those flights to San Diego from Illinois which offer a flexible booking policy as well as other useful filters and features.

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

Once all potential Illinois to San Diego flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Of course. momondo tracks the price of Illinois to San Diego flights. All you need is a valid email address and we will do the rest; it is that quick and easy.


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