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Cheap flights from Decatur, Illinois to San Diego from $326

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Decatur, Illinois to San Diego departing on 7/30. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Decatur, Illinois to San Diego

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
9:37 am - 3:25 pm
DEC
-
SAN
7h 48m
1 stop
United Airlines Logo
10:25 pm - 8:57 am
SAN
-
DEC
8h 32m
1 stop
$398United Airlines
Thu, Jul 30 - Sun, Aug 2
United Airlines Logo
9:37 am - 3:25 pm
DEC
-
SAN
7h 48m
1 stop
United Airlines Logo
8:32 pm - 8:57 am
SAN
-
DEC
10h 25m
2 stops
$408United Airlines
Thu, Jul 30 - Sun, Aug 2
United Airlines Logo
9:42 am - 8:29 pm
DEC
-
SAN
12h 47m
2 stops
United Airlines Logo
6:40 am - 5:51 pm
SAN
-
DEC
9h 11m
1 stop
$454United Airlines
Wed, Oct 7 - Tue, Oct 13
United Airlines Logo
6:55 pm - 12:22 pm
DEC
-
SAN
19h 27m
1 stop
United Airlines Logo
10:30 pm - 8:46 am
SAN
-
DEC
8h 16m
1 stop
$459United Airlines
Sat, Oct 31 - Wed, Nov 4
United Airlines Logo
6:55 pm - 12:34 pm
DEC
-
SAN
19h 39m
2 stops
United Airlines Logo
10:30 pm - 8:46 am
SAN
-
DEC
8h 16m
1 stop
$469United Airlines
Sat, Oct 31 - Wed, Nov 4
United Airlines Logo
9:37 am - 7:50 pm
DEC
-
SAN
12h 13m
2 stops
United Airlines Logo
8:32 pm - 8:57 am
SAN
-
DEC
10h 25m
2 stops
$474United Airlines
Thu, Jul 30 - Sun, Aug 2
United Airlines Logo
6:55 pm - 10:17 am
DEC
-
SAN
17h 22m
2 stops
United Airlines Logo
12:10 pm - 8:46 am
SAN
-
DEC
18h 36m
2 stops
$489United Airlines
Sat, Oct 31 - Wed, Nov 4
United Airlines Logo
9:37 am - 3:25 pm
DEC
-
SAN
7h 48m
1 stop
United Airlines Logo
6:40 am - 5:56 pm
SAN
-
DEC
9h 16m
1 stop
$492United Airlines
Fri, Jul 10 - Thu, Jul 16
United Airlines Logo
9:37 am - 7:51 pm
DEC
-
SAN
12h 14m
2 stops
United Airlines Logo
8:32 pm - 8:57 am
SAN
-
DEC
10h 25m
2 stops
$520United Airlines
Fri, Jul 10 - Thu, Jul 16
United Airlines Logo
6:55 pm - 11:25 am
DEC
-
SAN
18h 30m
1 stop
United Airlines Logo
6:40 am - 5:51 pm
SAN
-
DEC
9h 11m
1 stop
$544United Airlines
Wed, Oct 7 - Tue, Oct 13

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United Airlines flights from Decatur, Illinois to San Diego

Our best United Airlines deals on Decatur, Illinois to San Diego flight tickets
United Airlines
Jul 30
DEC9:37 amDecatur Arpt
7h 48m
1 stop
SAN3:25 pmSan Diego
Aug 2
SAN10:25 pmSan Diego
8h 32m
1 stop
DEC8:57 amDecatur Arpt
$398
United Airlines
Jul 30
DEC9:37 amDecatur Arpt
7h 48m
1 stop
SAN3:25 pmSan Diego
Aug 2
SAN8:32 pmSan Diego
10h 25m
2 stops
DEC8:57 amDecatur Arpt
$408
United Airlines
Oct 7
DEC9:42 amDecatur Arpt
12h 47m
2 stops
SAN8:29 pmSan Diego
Oct 13
SAN6:40 amSan Diego
9h 11m
1 stop
DEC5:51 pmDecatur Arpt
$454

momondo Fare Finder

 
Customize your flight search to find flights from Decatur, Illinois to San Diego 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, momondo users made 832,500 searches. Data last updated June 14, 2026.
Use the filters below to find and compare flights from Decatur, Illinois to San Diego that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

DecaturSan Diego

DEC - SAN

DECSAN

Decatur Arpt

Thu 7/30

9:37 am-3:25 pm

1 stop7h 48m

San Diego

Sun 8/2

10:25 pm-8:57 am

1 stop8h 32m

$398

DecaturSan Diego

DEC - SAN

DECSAN

Decatur Arpt

Thu 7/30

9:37 am-3:25 pm

1 stop7h 48m

San Diego

Sun 8/2

8:32 pm-8:57 am

2 stops10h 25m

$408

DecaturSan Diego

DEC - SAN

DECSAN

Decatur Arpt

Wed 10/7

9:42 am-8:29 pm

2 stops12h 47m

San Diego

Tue 10/13

6:40 am-5:51 pm

1 stop9h 11m

$454

DecaturSan Diego

DEC - SAN

DECSAN

Decatur Arpt

Sat 10/31

6:55 pm-12:22 pm

1 stop19h 27m

San Diego

Wed 11/4

10:30 pm-8:46 am

1 stop8h 16m

$459

DecaturSan Diego

DEC - SAN

DECSAN

Decatur Arpt

Sat 10/31

6:55 pm-12:34 pm

2 stops19h 39m

San Diego

Wed 11/4

10:30 pm-8:46 am

1 stop8h 16m

$469

DecaturSan Diego

DEC - SAN

DECSAN

Decatur Arpt

Thu 7/30

9:37 am-7:50 pm

2 stops12h 13m

San Diego

Sun 8/2

8:32 pm-8:57 am

2 stops10h 25m

$474

DecaturSan Diego

DEC - SAN

DECSAN

Decatur Arpt

Sat 10/31

6:55 pm-10:17 am

2 stops17h 22m

San Diego

Wed 11/4

12:10 pm-8:46 am

2 stops18h 36m

$489

DecaturSan Diego

DEC - SAN

DECSAN

Decatur Arpt

Fri 7/10

9:37 am-3:25 pm

1 stop7h 48m

San Diego

Thu 7/16

6:40 am-5:56 pm

1 stop9h 16m

$492

DecaturSan Diego

DEC - SAN

DECSAN

Decatur Arpt

Fri 7/10

9:37 am-7:51 pm

2 stops12h 14m

San Diego

Thu 7/16

8:32 pm-8:57 am

2 stops10h 25m

$520

DecaturSan Diego

DEC - SAN

DECSAN

Decatur Arpt

Wed 10/7

6:55 pm-11:25 am

1 stop18h 30m

San Diego

Tue 10/13

6:40 am-5:51 pm

1 stop9h 11m

$544

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Decatur, 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

Can stopping save me money on Decatur, Illinois to San Diego flights?

You could potentially save up to 45% on your flight if you consider stops on a Decatur, Illinois to San Diego flight.

When to book flights from Decatur, Illinois to San Diego

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

Cheap Decatur, Illinois to San Diego (DEC to SAN) flight deals and tips

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

Fastest flight time

7h 48m

Direct flights

None
The fastest flight from Decatur, Illinois to San Diego takes 7h 48m
There are no direct flights from Decatur, Illinois to San Diego. There are no popular flight routes from Decatur, Illinois to San Diego.
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Frequently asked questions about flying from Decatur, Illinois to San Diego

  • How far is Decatur Arpt to San Diego by plane?

    The distance between Decatur Arpt and San Diego is about 1637.2 mi. A reasonable flight in good conditions will take 7h 48m.

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

    Prices for flights from Decatur Arpt Airport to San Diego Airport are refreshed on a daily basis.

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

  • How old do you have to be to fly from Decatur Arpt Airport 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 Decatur Arpt Airport 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 airline from Decatur, Illinois to San Diego?

Best airlines flying from Decatur, Illinois to San Diego

Compare and see reviews for airlines that fly from Decatur, Illinois to San Diego with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $284Free CancellationRating
7.4
9,818 reviews
Search United Airlines flights

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
National City
Poway
La Mesa
San Ysidro
Borrego Springs
Imperial Beach
Lemon Grove
Alpine
Santee

Why use momondo?

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

It is quick and easy to find Decatur to San Diego flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to San Diego that suits you.

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

Yes. momondo allows you to filter the results for Decatur to San Diego flights to just show those with flexible booking policies.

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

Once you have performed a search for Decatur to San Diego flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes momondo offers price alerts on flights to San Diego from Decatur. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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