$284+ Cheap flights from Idaho Falls to Santa Rosa (IDA - STS)
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 12/23. Fares are subject to change and may not be available on all flights or dates of travel.
IDA — STS
Nov 25 — Dec 21
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Idaho Falls to Santa Rosa 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 Idaho Falls to Santa Rosa
Cheapest
Best
One-way
Cheapest flights from Idaho Falls to Santa RosaExplore the most affordable flight options available from Idaho Falls to Santa Rosa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 26, 2026.
Explore the most affordable flight options available from Idaho Falls to Santa Rosa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 26, 2026.
This Alaska Airlines deal was found by Cheapflights users on 10/26. 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.
Wed 12/233:55 pm -
2 stops43h 18m
Tue 12/297:13 pm -
2 stops17h 02m
Deal found 10/26![Alaska Airlines logo]()
$530
This Alaska Airlines deal was found by Cheapflights users on 10/26. 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.
Wed 12/233:55 pm -
2 stops27h 38m
Mon 12/289:07 pm -
1 stop25h 38m
Deal found 10/26![Alaska Airlines logo]()
$558
This Delta deal was found by Cheapflights users on 10/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/195:20 am -
1 stop6h 25m
Sun 1/34:50 pm -
1 stop5h 13m
Deal found 10/22![Delta logo]()
$561
This Delta deal was found by Cheapflights users on 10/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/205:20 am -
1 stop6h 25m
Sun 1/34:50 pm -
1 stop5h 13m
Deal found 10/22![Delta logo]()
$585
This Alaska Airlines deal was found by Cheapflights users on 10/22. 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.
Fri 10/231:58 pm -
1 stop8h 58m
Thu 10/297:00 am -
1 stop7h 20m
Deal found 10/22![Alaska Airlines logo]()
$611
Best flights from Idaho Falls to Santa RosaDiscover carefully curated flight deals from Idaho Falls to Santa Rosa that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 26, 2026.
Discover carefully curated flight deals from Idaho Falls to Santa Rosa that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 26, 2026.
This Alaska Airlines deal was found by Cheapflights users on 10/26. 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.
Wed 12/233:55 pm -
2 stops43h 18m
Tue 12/297:13 pm -
2 stops17h 02m
Deal found 10/26![Alaska Airlines logo]()
$530
This Delta deal was found by Cheapflights users on 10/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/195:20 am -
1 stop6h 25m
Sun 1/34:50 pm -
1 stop5h 13m
Deal found 10/22![Delta logo]()
$561
This Alaska Airlines deal was found by Cheapflights users on 10/26. 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.
Wed 12/233:55 pm -
2 stops27h 38m
Mon 12/289:07 pm -
1 stop25h 38m
Deal found 10/26![Alaska Airlines logo]()
$558
This Delta deal was found by Cheapflights users on 10/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/205:20 am -
1 stop6h 25m
Sun 1/34:50 pm -
1 stop5h 13m
Deal found 10/22![Delta logo]()
$585
One-way flights from Idaho Falls to Santa RosaSearch for one-way flight options from Idaho Falls to Santa Rosa. Find affordable one-way fares based on user searches. Data last updated October 26, 2026.
Search for one-way flight options from Idaho Falls to Santa Rosa. Find affordable one-way fares based on user searches. Data last updated October 26, 2026.
This Alaska Airlines deal was found by Cheapflights users on 10/26. 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.
Wed 12/233:55 pm -
2 stops23h 29m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![Alaska Airlines logo]()
$284
This Delta deal was found by Cheapflights users on 10/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/235:40 am -
1 stop6h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![Delta logo]()
$380
Find flight deals from Idaho Falls to Santa Rosa
Discover tips and strategies to find the most affordable flight options for your journey from Idaho Falls (IDA) to Santa Rosa (STS). 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 October 26, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $530 (Alaska Airlines) |
One-way from | $284 (Alaska Airlines) |
Popular in | February |
Cheapest in | April |
Average price | $814 |
Cheapflights Fare Finder
Customize your flight search to find flights from Idaho Falls to Santa Rosa 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 October 26, 2026.
Use the filters below to find and compare flights from Idaho Falls to Santa Rosa that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Idaho FallsSanta Rosa
IDA Idaho Falls Fanning Field - STS Santa Rosa Sonoma County
IDASTS
Idaho Falls Fanning Field
Wed 12/23
3:55 pm-2:24 pm
2 stops23h 29m
Santa Rosa Sonoma County
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$284
Quickest round-trip
Idaho FallsSanta Rosa
IDA Idaho Falls Fanning Field - STS Santa Rosa Sonoma County
IDASTS
Idaho Falls Fanning Field
Wed 12/23
5:40 am-10:45 am
1 stop6h 05m
Santa Rosa Sonoma County
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$380
Idaho FallsSanta Rosa
IDA Idaho Falls Fanning Field - STS Santa Rosa Sonoma County
IDASTS
Idaho Falls Fanning Field
Wed 12/23
3:55 pm-10:13 am
2 stops43h 18m
Santa Rosa Sonoma County
Tue 12/29
7:13 pm-1:15 pm
2 stops17h 02m
$530
Idaho FallsSanta Rosa
IDA Idaho Falls Fanning Field - STS Santa Rosa Sonoma County
IDASTS
Idaho Falls Fanning Field
Wed 12/23
3:55 pm-6:33 pm
2 stops27h 38m
Santa Rosa Sonoma County
Mon 12/28
9:07 pm-11:45 pm
1 stop25h 38m
$558
Idaho FallsSanta Rosa
IDA Idaho Falls Fanning Field - STS Santa Rosa Sonoma County
IDASTS
Idaho Falls Fanning Field
Sat 12/19
5:20 am-10:45 am
1 stop6h 25m
Santa Rosa Sonoma County
Sun 1/3
4:50 pm-11:03 pm
1 stop5h 13m
$561
Idaho FallsSanta Rosa
IDA Idaho Falls Fanning Field - STS Santa Rosa Sonoma County
IDASTS
Idaho Falls Fanning Field
Sun 12/20
5:20 am-10:45 am
1 stop6h 25m
Santa Rosa Sonoma County
Sun 1/3
4:50 pm-11:03 pm
1 stop5h 13m
$585
Sorted by cheapest first
Compare providers for flights from Idaho Falls to Santa Rosa
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Idaho Falls to Santa Rosa in October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Idaho Falls-Santa Rosa flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Idaho Falls-Santa Rosa flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Idaho Falls-Santa Rosa flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Idaho Falls-Santa Rosa 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 Idaho Falls-Santa Rosa 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 Idaho Falls to Santa Rosa
Have a flexible travel schedule? Discover the best time to fly to Santa Rosa from Idaho Falls with our price prediction graph.
IDA-STS
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.
Related info for your journey
Find useful and relevant information for your journey from Idaho Falls to Santa Rosa. 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 Santa Rosa?
Book flights to Santa Rosa if you plan to visit one of these locationsFort Bragg
Ukiah
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Other flights from Idaho Falls
Popular flights
Santa Rosa flight routes