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$335+ Cheap flights from Decatur, IL to San Diego (DEC - SAN)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/7. Fares are subject to change and may not be available on all flights or dates of travel.
DEC — SAN
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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Cheap flight deals from Decatur to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from Decatur (DEC) to San Diego (SAN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$335
(United Airlines)
Provider with most accurate pricing for Decatur Arpt-San Diego flight deals.
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Provider most trusted by Cheapflights users for Decatur Arpt-San Diego flights.
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From Decatur Arpt to San Diego
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Find flight deals from Decatur to San Diego

Cheapest flights from Decatur to San Diego
Explore the most affordable flight options available from Decatur to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

This United Airlines deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/73:00 pmDEC - SAN
1 stop9h 20mUnited Airlines
Tue 3/1110:25 pmSAN - DEC
1 stop8h 25mUnited Airlines
Deal found 2/20$335

Find flights from Decatur to San Diego within your budget

Customize your flight search to find flights from Decatur 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, Cheapflights users made 2,558,603 searches. Data last updated February 20, 2025.

Fly from

Decatur

Fly to

San Diego

Route

Depart

Return

Price

DecaturSan Diego

DEC - SAN

DECSAN

Decatur Arpt

Fri 3/7

3:00 pm-10:20 pm

1 stop9h 20m

San Diego

Tue 3/11

10:25 pm-8:50 am

1 stop8h 25m

$335

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

  • Most accurate provider: When it comes to deals on Decatur, Illinois-San Diego flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Decatur, Illinois-San Diego flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Decatur, Illinois-San Diego flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Decatur, Illinois-San Diego flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Decatur, Illinois-San Diego flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Decatur to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego from Decatur with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Decatur to San Diego

Get recent, data-driven insights about flights from Decatur to San Diego including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Decatur, Illinois to San Diego?

Currently, August is the cheapest month in which you can book a flight from Decatur, Illinois to San Diego (average of $286). Flying from Decatur, Illinois to San Diego in March is currently the most expensive (average of $366). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Rainfall in San Diego by month

Plan your trip to San Diego by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Diego ranges from 0.0 - 2.3 inches per month. February is typically the wettest month, when rainfall can reach 2.3 in. July is typically the driest time to visit San Diego when rainfall is around 0.0 in.

Temperature in San Diego by month

Plan your trip to San Diego by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Diego, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 57.2 F).

Reviews of airlines servicing San Diego

Get insights into the airlines that provide service to San Diego. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Diego. Reviews last updated February 20, 2025.
United Airlines
7.4
Good
8,765 reviews

Crew

8.1

Overall

7.4

Boarding

7.7

Entertainment

7.1

Food

6.7

Comfort

7.3

Reviews

1 / 20

4.0
Okay

Simon,Jun 2024

LAS - LAX

Basic and no-frills. Late timing put pressure on disembarking and making connections.

United Airlines
7.4
Good
8,765 reviews
United Airlines
7.4
Good
8,765 reviews

Crew

8.1

Overall

7.4

Boarding

7.7

Entertainment

7.1

Food

6.7

Comfort

7.3

Reviews

1 / 20

4.0
Okay

Simon,Jun 2024

LAS - LAX

Basic and no-frills. Late timing put pressure on disembarking and making connections.

Related info for your journey

Find useful and relevant information for your journey from Decatur to San Diego. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find deals for flights from Decatur to San Diego that include hotel bookings?

    Yes. In addition to deals on Decatur to San Diego flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Decatur to San Diego?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Decatur to San Diego.

  • Can I find deals for business class flights from Decatur to San Diego?

    Yes. Cheapflights offers flight deals from Decatur to San Diego by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Decatur, Illinois to San Diego?

    Currently, August is the cheapest month in which you can book a flight from Decatur, Illinois to San Diego (average of $286). Flying from Decatur, Illinois to San Diego in March is currently the most expensive (average of $366). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Decatur?

Book flights to Decatur if you plan to visit one of these locations
El Cajon
Chula Vista
Lemon Grove
National City
Imperial Beach
La Mesa
Alpine
Poway
Santee
Coronado
Borrego Springs

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