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 December 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.

$362 Cheap Flights from Decatur to San Diego in 2025/26

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Find the cheapest flights from Decatur, Illinois to San Diego

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:09 pm - 3:33 pm

DEC

SAN

22h 24m1 stop

7:00 am - 6:01 pm

SAN

DEC

9h 01m1 stop

$394United Airlines

sáb., ene. 17 - mié., ene. 21

7:09 pm - 8:49 pm

DEC

SAN

27h 40m2 stops

7:00 am - 6:01 pm

SAN

DEC

9h 01m1 stop

$400United Airlines

sáb., ene. 17 - mié., ene. 21

7:09 pm - 8:49 pm

DEC

SAN

27h 40m2 stops

8:37 pm - 9:05 am

SAN

DEC

10h 28m2 stops

$409United Airlines

sáb., ene. 17 - mié., ene. 21

7:09 pm - 10:51 pm

DEC

SAN

29h 42m1 stop

10:30 pm - 5:59 pm

SAN

DEC

17h 29m1 stop

$904United Airlines

mar., dic. 30 - sáb., ene. 3

7:09 pm - 5:34 pm

DEC

SAN

24h 25m2 stops

10:30 pm - 5:59 pm

SAN

DEC

17h 29m1 stop

$914United Airlines

mar., dic. 30 - sáb., ene. 3

7:09 pm - 3:55 pm

DEC

SAN

46h 46m3 stops

10:30 pm - 5:59 pm

SAN

DEC

17h 29m1 stop

$942United Airlines

mar., dic. 30 - sáb., ene. 3

7:09 pm - 5:34 pm

DEC

SAN

24h 25m2 stops

6:30 am - 5:59 pm

SAN

DEC

33h 29m3 stops

$1,008United Airlines

mar., dic. 30 - sáb., ene. 3

7:09 pm - 3:55 pm

DEC

SAN

46h 46m3 stops

6:30 am - 5:59 pm

SAN

DEC

33h 29m3 stops

$1,036United Airlines

mar., dic. 30 - sáb., ene. 3

United Airlines flights from Decatur, Illinois to San Diego

Our best United Airlines deals on Decatur, Illinois to San Diego flight tickets

United Airlines

Jan 17

DEC7:09 pmDecatur Arpt

22h 24m

1 stop

SAN3:33 pmSan Diego

Jan 21

SAN7:00 amSan Diego

9h 01m

1 stop

DEC6:01 pmDecatur Arpt

$394

Find similar

United Airlines

Jan 17

DEC7:09 pmDecatur Arpt

27h 40m

2 stops

SAN8:49 pmSan Diego

Jan 21

SAN7:00 amSan Diego

9h 01m

1 stop

DEC6:01 pmDecatur Arpt

$400

Find similar

United Airlines

Jan 17

DEC7:09 pmDecatur Arpt

27h 40m

2 stops

SAN8:49 pmSan Diego

Jan 21

SAN8:37 pmSan Diego

10h 28m

2 stops

DEC9:05 amDecatur Arpt

$409

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

sáb. 1/17

7:09 pm-3:33 pm

1 stop22h 24m

San Diego

mié. 1/21

7:00 am-6:01 pm

1 stop9h 01m

$394

DecaturSan Diego

DEC - SAN

DECSAN

Decatur Arpt

sáb. 1/17

7:09 pm-8:49 pm

2 stops27h 40m

San Diego

mié. 1/21

7:00 am-6:01 pm

1 stop9h 01m

$400

DecaturSan Diego

DEC - SAN

DECSAN

Decatur Arpt

sáb. 1/17

7:09 pm-8:49 pm

2 stops27h 40m

San Diego

mié. 1/21

8:37 pm-9:05 am

2 stops10h 28m

$409

DecaturSan Diego

DEC - SAN

DECSAN

Decatur Arpt

mar. 12/30

7:09 pm-10:51 pm

1 stop29h 42m

San Diego

sáb. 1/3

10:30 pm-5:59 pm

1 stop17h 29m

$904

DecaturSan Diego

DEC - SAN

DECSAN

Decatur Arpt

mar. 12/30

7:09 pm-5:34 pm

2 stops24h 25m

San Diego

sáb. 1/3

10:30 pm-5:59 pm

1 stop17h 29m

$914

DecaturSan Diego

DEC - SAN

DECSAN

Decatur Arpt

mar. 12/30

7:09 pm-3:55 pm

3 stops46h 46m

San Diego

sáb. 1/3

10:30 pm-5:59 pm

1 stop17h 29m

$942

DecaturSan Diego

DEC - SAN

DECSAN

Decatur Arpt

mar. 12/30

7:09 pm-5:34 pm

2 stops24h 25m

San Diego

sáb. 1/3

6:30 am-5:59 pm

3 stops33h 29m

$1,008

DecaturSan Diego

DEC - SAN

DECSAN

Decatur Arpt

mar. 12/30

7:09 pm-3:55 pm

3 stops46h 46m

San Diego

sáb. 1/3

6:30 am-5:59 pm

3 stops33h 29m

$1,036

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

Fastest flight time	12h 32m
Direct flights	None

The fastest flight from Decatur, Illinois to San Diego takes 12h 32m

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

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 12h 32m.
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 December 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 9,095 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

National City

Poway

Imperial Beach

Borrego Springs

La Mesa

San Ysidro

Alpine

Lemon Grove

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 $394

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 1/17. 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

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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

Fastest flight time

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