How do I get Price Alerts for flights from Decatur, Illinois to San Diego?

Search flight deals from Decatur, Illinois to San Diego . While viewing offers you’ll have the option to create a Price Alert.

How can I save money on flights from Decatur, Illinois to San Diego with momondo?

With “Price Forecast”, learn how soon you should book your flight in advance. Down to the day of week and time of day, our information can inform you on the ideal time to book to save on your travel. Our “Price Calendar” shows you at a quick glance when to book your travel for lower rates. By setting “Price Alerts” you can monitor changes in price and target the ideal time to book. Search for your trip destination by budget amount via our “Explore” feature. Whether you’re looking for ideas for your next travel adventure or cost-cutting tips, our “Discover” content is a great place to start.

How does momondo find its flight prices?

We compare prices from 700+ competitors to help you find the price that works best for you. momondo operates in over 30 international markets, bringing you access to a wide range of fares and deals. Search for your travel using momondo for a diverse range of options from airlines and OTAs.

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?

The number of operators available for flights from Decatur Arpt Airport to San Diego Airport is 1 as of September 2025.

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.

$340 Cheap Flights from Decatur to San Diego in 2025

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Find the cheapest flights from Decatur, Illinois to San Diego

Round-trip

One-way

Last minute

Cheap round-trip flights

9:38 am - 9:45 pmDEC-SAN

14h 07m2 stops

10:30 pm - 8:51 amSAN-DEC

8h 21m1 stop

$340United Airlines

Find Deal

Fri, Sep 26 - Tue, Sep 30

9:38 am - 8:02 pmDEC-SAN

12h 24m2 stops

8:08 pm - 8:51 amSAN-DEC

10h 43m2 stops

$349United Airlines

Find Deal

Fri, Sep 26 - Tue, Sep 30

9:44 am - 4:02 pmDEC-SAN

8h 18m1 stop

10:30 pm - 8:48 amSAN-DEC

8h 18m1 stop

$374United Airlines

Find Deal

Wed, Nov 19 - Sun, Nov 23

9:44 am - 4:02 pmDEC-SAN

8h 18m1 stop

8:40 pm - 8:48 amSAN-DEC

10h 08m2 stops

$384United Airlines

Find Deal

Wed, Nov 19 - Sun, Nov 23

9:38 am - 9:40 amDEC-SAN

26h 02m1 stop

10:30 pm - 8:51 amSAN-DEC

8h 21m1 stop

$388United Airlines

Find Deal

Tue, Oct 7 - Tue, Oct 21

9:44 am - 7:52 pmDEC-SAN

12h 08m2 stops

8:40 pm - 8:48 amSAN-DEC

10h 08m2 stops

$389United Airlines

Find Deal

Wed, Nov 19 - Sun, Nov 23

3:20 pm - 11:44 pmDEC-SAN

10h 24m2 stops

7:20 pm - 2:31 pmSAN-DEC

17h 11m3 stops

$394United Airlines

Find Deal

Sat, Feb 21 - Wed, Feb 25

3:20 pm - 9:47 pmDEC-SAN

8h 27m1 stop

7:00 am - 2:31 pmSAN-DEC

5h 31m1 stop

$399United Airlines

Find Deal

Fri, Mar 6 - Sat, Mar 14

3:20 pm - 9:47 pmDEC-SAN

8h 27m1 stop

9:55 pm - 10:51 amSAN-DEC

10h 56m2 stops

$409United Airlines

Find Deal

Thu, Mar 5 - Thu, Mar 12

3:20 pm - 11:44 pmDEC-SAN

10h 24m2 stops

10:30 pm - 2:31 pmSAN-DEC

14h 01m2 stops

$414United Airlines

Find Deal

Fri, Mar 6 - Fri, Mar 13

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 26

DEC9:38 amDecatur Arpt

14h 07m

2 stops

SAN9:45 pmSan Diego

Sep 30

SAN10:30 pmSan Diego

8h 21m

1 stop

DEC8:51 amDecatur Arpt

$340

Find similar

United Airlines

Sep 26

DEC9:38 amDecatur Arpt

12h 24m

2 stops

SAN8:02 pmSan Diego

Sep 30

SAN8:08 pmSan Diego

10h 43m

2 stops

DEC8:51 amDecatur Arpt

$349

Find similar

United Airlines

Nov 19

DEC9:44 amDecatur Arpt

8h 18m

1 stop

SAN4:02 pmSan Diego

Nov 23

SAN10:30 pmSan Diego

8h 18m

1 stop

DEC8:48 amDecatur Arpt

$374

Find similar

momondo Fare Finder

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

DecaturSan Diego

DEC - SAN

DECSAN

Decatur Arpt

Fri 9/26

9:38 am-9:45 pm

2 stops14h 07m

San Diego

Tue 9/30

10:30 pm-8:51 am

1 stop8h 21m

$340

DecaturSan Diego

DEC - SAN

DECSAN

Decatur Arpt

Fri 9/26

9:38 am-8:02 pm

2 stops12h 24m

San Diego

Tue 9/30

8:08 pm-8:51 am

2 stops10h 43m

$349

DecaturSan Diego

DEC - SAN

DECSAN

Decatur Arpt

Wed 11/19

9:44 am-4:02 pm

1 stop8h 18m

San Diego

Sun 11/23

10:30 pm-8:48 am

1 stop8h 18m

$374

DecaturSan Diego

DEC - SAN

DECSAN

Decatur Arpt

Wed 11/19

9:44 am-4:02 pm

1 stop8h 18m

San Diego

Sun 11/23

8:40 pm-8:48 am

2 stops10h 08m

$384

DecaturSan Diego

DEC - SAN

DECSAN

Decatur Arpt

Tue 10/7

9:38 am-9:40 am

1 stop26h 02m

San Diego

Tue 10/21

10:30 pm-8:51 am

1 stop8h 21m

$388

DecaturSan Diego

DEC - SAN

DECSAN

Decatur Arpt

Wed 11/19

9:44 am-7:52 pm

2 stops12h 08m

San Diego

Sun 11/23

8:40 pm-8:48 am

2 stops10h 08m

$389

DecaturSan Diego

DEC - SAN

DECSAN

Decatur Arpt

Sat 2/21

3:20 pm-11:44 pm

2 stops10h 24m

San Diego

Wed 2/25

7:20 pm-2:31 pm

3 stops17h 11m

$394

DecaturSan Diego

DEC - SAN

DECSAN

Decatur Arpt

Fri 3/6

3:20 pm-9:47 pm

1 stop8h 27m

San Diego

Sat 3/14

7:00 am-2:31 pm

1 stop5h 31m

$399

DecaturSan Diego

DEC - SAN

DECSAN

Decatur Arpt

Thu 3/5

3:20 pm-9:47 pm

1 stop8h 27m

San Diego

Thu 3/12

9:55 pm-10:51 am

2 stops10h 56m

$409

DecaturSan Diego

DEC - SAN

DECSAN

Decatur Arpt

Fri 3/6

3:20 pm-11:44 pm

2 stops10h 24m

San Diego

Fri 3/13

10:30 pm-2:31 pm

2 stops14h 01m

$414

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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

Direct flights	None

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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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 8h 12m.
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?
The number of operators available for flights from Decatur Arpt Airport to San Diego Airport is 1 as of September 2025.
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?
momondo data reveals that the most frequently booked airline on the route from Decatur, Illinois to San Diego is United Airlines, representing 100% of all bookings.

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 Airlines	PriceFrom $284	Free Cancellation	Rating 7.4 8,937 reviews		Search United Airlines flights

How do I get Price Alerts for flights from Decatur, Illinois to San Diego?
Search flight deals from Decatur, Illinois to San Diego. While viewing offers you’ll have the option to create a Price Alert.
How can I save money on flights from Decatur, Illinois to San Diego with momondo?
With “Price Forecast”, learn how soon you should book your flight in advance. Down to the day of week and time of day, our information can inform you on the ideal time to book to save on your travel. Our “Price Calendar” shows you at a quick glance when to book your travel for lower rates. By setting “Price Alerts” you can monitor changes in price and target the ideal time to book. Search for your trip destination by budget amount via our “Explore” feature. Whether you’re looking for ideas for your next travel adventure or cost-cutting tips, our “Discover” content is a great place to start.
How does momondo find its flight prices?
We compare prices from 700+ competitors to help you find the price that works best for you. momondo operates in over 30 international markets, bringing you access to a wide range of fares and deals. Search for your travel using momondo for a diverse range of options from airlines and OTAs.

Coronado

Chula Vista

El Cajon

Julian

La Mesa

National City

Imperial Beach

Poway

San Ysidro

Borrego Springs

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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Cheap flights from Decatur, Illinois to San Diego from $340

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 9/26. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Decatur, Illinois to San Diego

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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

momondo Fare Finder

Use the filters below to find and compare flights from Decatur, Illinois to San Diego that are best for you.

When to book flights from Decatur, Illinois to San Diego

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

Direct flights

How far is Decatur Arpt to San Diego by plane?

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

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?

What documentation or ID do you need to fly to San Diego Airport?

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

How do I get Price Alerts for flights from Decatur, Illinois to San Diego?

How can I save money on flights from Decatur, Illinois to San Diego with momondo?

How does momondo find its flight prices?

Traveling to a place near San Diego?

Why use momondo?

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

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

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

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

An easier way to manage your San Diego trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing California