$125+ Cheap flights from Santa Rosa (STS) to Illinois
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/6. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Santa Rosa to Illinois 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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
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 Santa Rosa to Illinois
Discover tips and strategies to find the most affordable flight options for your journey from Santa Rosa (STS) to Illinois (USIL). 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 January 20, 2025.
Round-trip from | $353 (American Airlines) |
|---|---|
One-way from | $125 (Mytrip) |
Find flight deals from Santa Rosa to Illinois
Cheapest flights from Santa Rosa to IllinoisExplore the most affordable flight options available from Santa Rosa to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 20, 2025.
Explore the most affordable flight options available from Santa Rosa to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 20, 2025.
This American Airlines deal was found by Cheapflights users on 1/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Alaska Airlines deal was found by Cheapflights users on 1/19. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Alaska Airlines deal was found by Cheapflights users on 1/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This American Airlines deal was found by Cheapflights users on 1/18. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Alaska Airlines deal was found by Cheapflights users on 1/18. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Find flights from Santa Rosa to Illinois within your budget
Customize your flight search to find flights from Santa Rosa to Illinois 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 January 20, 2025.
Fly from
Fly to
Route
Depart
Return
Price
Santa RosaSt. Louis
STS - STL
STSSTL
Santa Rosa Sonoma County
Thu 2/27
12:54 pm-11:39 pm
1 stop8h 45m
Lambert-St Louis
Tue 3/4
7:15 am-12:14 pm
1 stop6h 59m
Santa RosaChicago
STS - ORD
STSORD
Santa Rosa Sonoma County
Tue 4/8
10:05 am-5:40 am
1 stop17h 35m
Chicago O'Hare Intl
Wed 4/16
7:40 am-6:52 pm
2 stops13h 12m
Santa RosaSt. Louis
STS - STL
STSSTL
Santa Rosa Sonoma County
Thu 2/27
3:09 pm-2:25 pm
2 stops21h 16m
Lambert-St Louis
Tue 3/4
7:00 am-10:06 am
1 stop29h 06m
Santa RosaMoline
STS - MLI
STSMLI
Santa Rosa Sonoma County
Tue 7/1
12:23 pm-8:33 pm
1 stop6h 10m
Moline Quad-City
Tue 7/22
7:14 am-11:48 am
1 stop6h 34m
Santa RosaMoline
STS - MLI
STSMLI
Santa Rosa Sonoma County
Tue 7/1
7:00 am-9:17 pm
2 stops12h 17m
Moline Quad-City
Tue 7/22
6:31 pm-1:48 pm
2 stops21h 17m
Santa RosaChicago
STS - ORD
STSORD
Santa Rosa Sonoma County
Thu 3/6
12:38 pm-6:36 am
1 stop15h 58m
Santa RosaChicago
STS - ORD
STSORD
Santa Rosa Sonoma County
Tue 2/11
8:05 am-11:59 pm
2 stops13h 54m
Santa RosaChicago
STS - ORD
STSORD
Santa Rosa Sonoma County
Mon 4/7
4:17 pm-12:41 am
1 stop6h 24m
Best time to book a flight from Santa Rosa to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from Santa Rosa with our price prediction graph.
Travel insights for flights from Santa Rosa to Illinois
Get recent, data-driven insights about flights from Santa Rosa to Illinois including ideal travel times, pricing trends, and more.
What is the cheapest month to book a flight from Santa Rosa to Illinois?
Currently, August is the cheapest month in which you can book a flight from Santa Rosa to Illinois (average of $245). Flying from Santa Rosa to Illinois in March is currently the most expensive (average of $320). 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.
What is the cheapest time of day to fly from STS to IL?
Find hourly flight availability from Santa Rosa to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 20, 2025.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Santa Rosa to Illinois as you normally would.
Rainfall in Illinois by month
Plan your trip to Illinois by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.
Temperature in Illinois by month
Plan your trip to Illinois by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).
Reviews of airlines servicing Illinois
Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated January 20, 2025.
Read through reviews of airlines operating flights from Santa Rosa to Illinois, such as Alaska Airlines and American Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
Food
Entertainment
Overall
Boarding
Crew
Reviews
Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Comfort
Food
Entertainment
Overall
Boarding
Crew
Reviews
Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Comfort
Food
Entertainment
Overall
Boarding
Crew
Reviews
Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Related info for your journey
Find useful and relevant information for your journey from Santa Rosa to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Santa Rosa to Illinois
See prices for flight routes from nearby airports that may be better suited for you.
Top 2 airlines flying from Santa Rosa to Illinois
Discover the top 2 airlines that operate flights from Santa Rosa to Illinois. 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 2,558,603 searches. Data last updated January 20, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$318 | Average$667 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$333 | Average$637 | FlexibilityNo cancel fee | On-time75% |