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Cheap flights from Decatur, Illinois to San Diego from $354

This is the cheapest round-trip 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 9/2. 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
9:12 am - 3:02 pm
DEC
-
SAN
7h 50m
1 stop
United Airlines Logo
10:30 pm - 8:05 am
SAN
-
DEC
7h 35m
1 stop
$354United Airlines
Wed, Sep 2 - Tue, Sep 8
United Airlines Logo
9:12 am - 5:46 pm
DEC
-
SAN
10h 34m
2 stops
United Airlines Logo
10:30 pm - 8:05 am
SAN
-
DEC
7h 35m
1 stop
$360United Airlines
Wed, Sep 2 - Tue, Sep 8
United Airlines Logo
9:12 am - 8:34 pm
DEC
-
SAN
13h 22m
2 stops
United Airlines Logo
6:15 am - 6:44 pm
SAN
-
DEC
10h 29m
2 stops
$458United Airlines
Wed, Sep 2 - Tue, Sep 8
United Airlines Logo
9:12 am - 3:02 pm
DEC
-
SAN
7h 50m
1 stop
United Airlines Logo
6:20 am - 5:59 pm
SAN
-
DEC
9h 39m
2 stops
$465United Airlines
Mon, Aug 17 - Mon, Aug 24
United Airlines Logo
9:12 am - 8:29 pm
DEC
-
SAN
13h 17m
2 stops
United Airlines Logo
6:20 am - 5:59 pm
SAN
-
DEC
9h 39m
2 stops
$470United Airlines
Mon, Aug 17 - Mon, Aug 24
United Airlines Logo
7:20 pm - 6:30 pm
DEC
-
SAN
25h 10m
1 stop
United Airlines Logo
10:30 pm - 6:43 pm
SAN
-
DEC
18h 13m
1 stop
$484United Airlines
Thu, Sep 3 - Mon, Oct 5
United Airlines Logo
7:20 pm - 9:32 am
DEC
-
SAN
16h 12m
1 stop
United Airlines Logo
3:00 pm - 6:43 pm
SAN
-
DEC
25h 43m
2 stops
$494United Airlines
Thu, Sep 3 - Mon, Oct 5
United Airlines Logo
7:20 pm - 11:35 am
DEC
-
SAN
18h 15m
2 stops
United Airlines Logo
2:24 pm - 6:43 pm
SAN
-
DEC
26h 19m
2 stops
$500United Airlines
Thu, Sep 3 - Mon, Oct 5
United Airlines Logo
9:12 am - 3:02 pm
DEC
-
SAN
7h 50m
1 stop
United Airlines Logo
6:18 am - 5:59 pm
SAN
-
DEC
9h 41m
1 stop
$525United Airlines
Mon, Aug 17 - Mon, Aug 24
United Airlines Logo
7:20 pm - 10:37 pm
DEC
-
SAN
29h 17m
1 stop
United Airlines Logo
10:40 pm - 7:37 am
SAN
-
DEC
6h 57m
1 stop
$647United Airlines
Sat, Aug 15 - Wed, Aug 19

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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
Sep 2
DEC9:12 amDecatur Arpt
7h 50m
1 stop
SAN3:02 pmSan Diego
Sep 8
SAN10:30 pmSan Diego
7h 35m
1 stop
DEC8:05 amDecatur Arpt
$354
United Airlines
Sep 2
DEC9:12 amDecatur Arpt
10h 34m
2 stops
SAN5:46 pmSan Diego
Sep 8
SAN10:30 pmSan Diego
7h 35m
1 stop
DEC8:05 amDecatur Arpt
$360
United Airlines
Sep 2
DEC9:12 amDecatur Arpt
13h 22m
2 stops
SAN8:34 pmSan Diego
Sep 8
SAN6:15 amSan Diego
10h 29m
2 stops
DEC6:44 pmDecatur Arpt
$458

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 August 4, 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

Wed 9/2

9:12 am-3:02 pm

1 stop7h 50m

San Diego

Tue 9/8

10:30 pm-8:05 am

1 stop7h 35m

$354

DecaturSan Diego

DEC - SAN

DECSAN

Decatur Arpt

Wed 9/2

9:12 am-5:46 pm

2 stops10h 34m

San Diego

Tue 9/8

10:30 pm-8:05 am

1 stop7h 35m

$360

DecaturSan Diego

DEC - SAN

DECSAN

Decatur Arpt

Wed 9/2

9:12 am-8:34 pm

2 stops13h 22m

San Diego

Tue 9/8

6:15 am-6:44 pm

2 stops10h 29m

$458

DecaturSan Diego

DEC - SAN

DECSAN

Decatur Arpt

Mon 8/17

9:12 am-3:02 pm

1 stop7h 50m

San Diego

Mon 8/24

6:20 am-5:59 pm

2 stops9h 39m

$465

DecaturSan Diego

DEC - SAN

DECSAN

Decatur Arpt

Mon 8/17

9:12 am-8:29 pm

2 stops13h 17m

San Diego

Mon 8/24

6:20 am-5:59 pm

2 stops9h 39m

$470

DecaturSan Diego

DEC - SAN

DECSAN

Decatur Arpt

Thu 9/3

7:20 pm-6:30 pm

1 stop25h 10m

San Diego

Mon 10/5

10:30 pm-6:43 pm

1 stop18h 13m

$484

DecaturSan Diego

DEC - SAN

DECSAN

Decatur Arpt

Thu 9/3

7:20 pm-9:32 am

1 stop16h 12m

San Diego

Mon 10/5

3:00 pm-6:43 pm

2 stops25h 43m

$494

DecaturSan Diego

DEC - SAN

DECSAN

Decatur Arpt

Thu 9/3

7:20 pm-11:35 am

2 stops18h 15m

San Diego

Mon 10/5

2:24 pm-6:43 pm

2 stops26h 19m

$500

DecaturSan Diego

DEC - SAN

DECSAN

Decatur Arpt

Mon 8/17

9:12 am-3:02 pm

1 stop7h 50m

San Diego

Mon 8/24

6:18 am-5:59 pm

1 stop9h 41m

$525

DecaturSan Diego

DEC - SAN

DECSAN

Decatur Arpt

Sat 8/15

7:20 pm-10:37 pm

1 stop29h 17m

San Diego

Wed 8/19

10:40 pm-7:37 am

1 stop6h 57m

$647

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to San Diego from

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 50m

Direct flights

None
The fastest flight from Decatur, Illinois to San Diego takes 7h 50m
There are no direct flights from Decatur, Illinois to San Diego. There are no popular flight routes from Decatur, Illinois to San Diego.
Search flight deals

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 50m.

  • 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
10,059 reviews
Search United Airlines flights

Traveling to a place near San Diego?

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Chula Vista
Coronado
El Cajon
National City
Julian
La Mesa
Poway
San Ysidro
Imperial Beach
Borrego Springs
Santee
Lemon Grove
Alpine

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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