$335+ Cheap flights from San Francisco to Decatur, IL (SFO - DEC)
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 10/16. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — DEC
Oct 15 — Oct 221
Round-trip
1 adult, Economy
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Find cheap flights from San Francisco to Decatur with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from San Francisco to Decatur
Cheapest
Best
Last-minute
One-way
Cheapest flights from San Francisco to DecaturExplore the most affordable flight options available from San Francisco to Decatur. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2026.
Explore the most affordable flight options available from San Francisco to Decatur. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2026.
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Wed 11/1110:45 pm -
1 stop7h 50m
Sat 11/146:57 pm -
1 stop7h 56m
Deal found 9/10![United Airlines logo]()
$454
This United Airlines deal was found by Cheapflights users on 9/12. 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.
Sat 11/146:35 am -
1 stop9h 20m
Sun 11/296:57 pm -
1 stop10h 00m
Deal found 9/12![United Airlines logo]()
$474
This United Airlines deal was found by Cheapflights users on 9/11. 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 10/166:38 pm -
1 stop22h 05m
Fri 10/237:18 pm -
1 stop7h 12m
Deal found 9/11![United Airlines logo]()
$508
This United Airlines deal was found by Cheapflights users on 9/11. 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.
Wed 10/2110:42 pm -
1 stop7h 53m
Fri 10/237:18 pm -
1 stop15h 22m
Deal found 9/11![United Airlines logo]()
$524
This United Airlines deal was found by Cheapflights users on 9/12. 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 10/166:38 pm -
1 stop22h 05m
Sun 10/187:18 pm -
1 stop15h 27m
Deal found 9/12![United Airlines logo]()
$562
This United Airlines deal was found by Cheapflights users on 9/11. 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.
Wed 9/2310:35 pm -
1 stop8h 00m
Sat 9/267:18 pm -
1 stop7h 12m
Deal found 9/11![United Airlines logo]()
$569
This United Airlines deal was found by Cheapflights users on 9/12. 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.
Sun 11/1510:15 am -
2 stops20h 20m
Sun 11/296:57 pm -
1 stop10h 00m
Deal found 9/12![United Airlines logo]()
$582
Best flights from San Francisco to DecaturDiscover carefully curated flight deals from San Francisco to Decatur that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 15, 2026.
Discover carefully curated flight deals from San Francisco to Decatur that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 15, 2026.
This United Airlines deal was found by Cheapflights users on 9/9. 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.
Wed 11/1111:30 pm -
1 stop7h 05m
Sat 11/146:57 pm -
1 stop7h 56m
Deal found 9/9![United Airlines logo]()
$454
This United Airlines deal was found by Cheapflights users on 9/10. 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 12/1111:12 pm -
1 stop17h 28m
Sun 12/207:03 pm -
1 stop7h 56m
Deal found 9/10![United Airlines logo]()
$508
This United Airlines deal was found by Cheapflights users on 9/12. 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.
Wed 11/115:00 am -
1 stop11h 10m
Sun 11/296:57 pm -
1 stop10h 00m
Deal found 9/12![United Airlines logo]()
$518
This United Airlines deal was found by Cheapflights users on 9/11. 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.
Wed 10/2110:42 pm -
1 stop7h 53m
Fri 10/237:18 pm -
1 stop15h 22m
Deal found 9/11![United Airlines logo]()
$524
This United Airlines deal was found by Cheapflights users on 9/11. 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.
Wed 9/2310:35 pm -
1 stop8h 00m
Sat 9/267:18 pm -
1 stop7h 12m
Deal found 9/11![United Airlines logo]()
$569
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Thu 10/16:10 am -
1 stop9h 43m
Sun 10/47:18 pm -
1 stop7h 12m
Deal found 9/10![United Airlines logo]()
$569
Last-minute flights from San Francisco to DecaturDiscover last-minute flight deals from San Francisco to Decatur. Data last updated September 15, 2026 and is based on user searches.
Discover last-minute flight deals from San Francisco to Decatur. Data last updated September 15, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 9/11. 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.
Wed 9/2310:35 pm -
1 stop8h 00m
Sat 9/267:18 pm -
1 stop7h 12m
Deal found 9/11![United Airlines logo]()
$569
This United Airlines deal was found by Cheapflights users on 9/11. 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.
Wed 10/1412:35 am -
1 stop15h 18m
Sun 10/256:57 pm -
1 stop15h 47m
Deal found 9/11![United Airlines logo]()
$599
This United Airlines deal was found by Cheapflights users on 9/11. 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 10/166:38 pm -
1 stop22h 05m
Fri 10/237:18 pm -
1 stop7h 12m
Deal found 9/11![United Airlines logo]()
$508
This United Airlines deal was found by Cheapflights users on 9/12. 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 10/166:38 pm -
1 stop22h 05m
Sun 10/187:18 pm -
1 stop15h 27m
Deal found 9/12![United Airlines logo]()
$562
This United Airlines deal was found by Cheapflights users on 9/11. 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.
Tue 10/2012:35 am -
1 stop16h 08m
Thu 10/229:12 am -
1 stop11h 42m
Deal found 9/11![United Airlines logo]()
$624
This United Airlines deal was found by Cheapflights users on 9/11. 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.
Wed 10/2110:42 pm -
1 stop7h 53m
Fri 10/237:18 pm -
1 stop15h 22m
Deal found 9/11![United Airlines logo]()
$524
This United Airlines deal was found by Cheapflights users on 9/11. 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.
Wed 10/2112:35 am -
1 stop15h 18m
Mon 10/269:10 am -
2 stops16h 56m
Deal found 9/11![United Airlines logo]()
$616
One-way flights from San Francisco to DecaturSearch for one-way flight options from San Francisco to Decatur. Find affordable one-way fares based on user searches. Data last updated September 15, 2026.
Search for one-way flight options from San Francisco to Decatur. Find affordable one-way fares based on user searches. Data last updated September 15, 2026.
This United Airlines deal was found by Cheapflights users on 9/13. 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 10/1610:42 pm -
1 stop18h 01m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![United Airlines logo]()
$335
This United Airlines deal was found by Cheapflights users on 9/14. 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.
Sun 10/256:35 am -
1 stop24h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![United Airlines logo]()
$362
This United Airlines deal was found by Cheapflights users on 9/9. 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.
Sat 11/286:42 pm -
1 stop11h 53m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![United Airlines logo]()
$472
Find flight deals from San Francisco to Decatur
Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Decatur (DEC). 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 September 15, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $454 (United Airlines) |
One-way from | $335 (United Airlines) |
Cheapflights Fare Finder
Customize your flight search to find flights from San Francisco to Decatur 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 7,457,451 searches. Data last updated September 15, 2026.
Use the filters below to find and compare flights from San Francisco to Decatur that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
San FranciscoDecatur
SFO San Francisco - DEC Decatur Arpt
SFODEC
San Francisco
Fri 10/16
10:42 pm-6:43 pm
1 stop18h 01m
Decatur Arpt
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$335
San FranciscoDecatur
SFO San Francisco - DEC Decatur Arpt
SFODEC
San Francisco
Sun 10/25
6:35 am-8:35 am
1 stop24h 00m
Decatur Arpt
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$362
San FranciscoDecatur
SFO San Francisco - DEC Decatur Arpt
SFODEC
San Francisco
Wed 11/11
11:30 pm-8:35 am
1 stop7h 05m
Decatur Arpt
Sat 11/14
6:57 pm-12:53 am
1 stop7h 56m
$454
Quickest round-trip
San FranciscoDecatur
SFO San Francisco - DEC Decatur Arpt
SFODEC
San Francisco
Sat 11/28
6:42 pm-8:35 am
1 stop11h 53m
Decatur Arpt
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$472
San FranciscoDecatur
SFO San Francisco - DEC Decatur Arpt
SFODEC
San Francisco
Fri 12/11
11:12 pm-6:40 pm
1 stop17h 28m
Decatur Arpt
Sun 12/20
7:03 pm-12:59 am
1 stop7h 56m
$508
San FranciscoDecatur
SFO San Francisco - DEC Decatur Arpt
SFODEC
San Francisco
Wed 11/11
5:00 am-6:10 pm
1 stop11h 10m
Decatur Arpt
Sun 11/29
6:57 pm-2:57 am
1 stop10h 00m
$518
San FranciscoDecatur
SFO San Francisco - DEC Decatur Arpt
SFODEC
San Francisco
Wed 10/21
10:42 pm-8:35 am
1 stop7h 53m
Decatur Arpt
Fri 10/23
7:18 pm-8:40 am
1 stop15h 22m
$524
San FranciscoDecatur
SFO San Francisco - DEC Decatur Arpt
SFODEC
San Francisco
Wed 9/23
10:35 pm-8:35 am
1 stop8h 00m
Decatur Arpt
Sat 9/26
7:18 pm-12:30 am
1 stop7h 12m
$569
San FranciscoDecatur
SFO San Francisco - DEC Decatur Arpt
SFODEC
San Francisco
Thu 10/1
6:10 am-5:53 pm
1 stop9h 43m
Decatur Arpt
Sun 10/4
7:18 pm-12:30 am
1 stop7h 12m
$569
Sorted by cheapest first
- Most accurate provider: When it comes to deals on San Francisco-Decatur, Illinois flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Francisco-Decatur, Illinois flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Francisco-Decatur, Illinois flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on San Francisco-Decatur, Illinois 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 San Francisco-Decatur, Illinois 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 San Francisco to Decatur
Have a flexible travel schedule? Discover the best time to fly to Decatur from San Francisco with our price prediction graph.
SFO-DEC
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.
Reviews of airlines servicing Decatur
Get insights into the airlines that provide service to Decatur. 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 Decatur. Reviews last updated September 15, 2026.
See what other customers who have flown with United Airlines from San Francisco to Decatur have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
7.4
Crew
8.1
Food
6.7
Boarding
7.7
Entertainment
7.1
Comfort
7.3
Reviews
1 / 20
4.0
OkayThomas,Mar 2025
SFO - TPE
Overall
7.4
Crew
8.1
Food
6.7
Boarding
7.7
Entertainment
7.1
Comfort
7.3
Reviews
1 / 20
4.0
OkayThomas,Mar 2025
SFO - TPE
Related info for your journey
Find useful and relevant information for your journey from San Francisco to Decatur. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Decatur?
Book flights to Decatur if you plan to visit one of these locationsMattoon
Effingham
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San Francisco and Decatur flights
Browse other San Francisco and Decatur flight options. Last updated on September 15, 2026.
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Check out other popular destinations found by fellow travelers in 2026
Top airline flying from San Francisco to Decatur
Discover the top airline that operate flights from San Francisco to Decatur. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 15, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$349 | Average$476 | FlexibilityNo cancel fee | On-time69% |