$419+ Cheap flights from Boise to Sioux City (BOI - SUX)
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 1/27. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SUX
Oct 11 — Oct 181
Round-trip
1 adult, Economy
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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 Boise to Sioux City
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Best
Last-minute
Cheapest flights from Boise to Sioux CityExplore the most affordable flight options available from Boise to Sioux City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2026.
Explore the most affordable flight options available from Boise to Sioux City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2026.
This United Airlines deal was found by Cheapflights users on 9/6. 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 10/165:30 pm -
1 stop5h 13m
Sat 10/246:58 pm -
1 stop15h 54m
Deal found 9/6![United Airlines logo]()
$604
This United Airlines deal was found by Cheapflights users on 9/7. 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 10/165:30 pm -
1 stop5h 13m
Sun 10/256:45 pm -
1 stop27h 47m
Deal found 9/7![United Airlines logo]()
$615
This United Airlines deal was found by Cheapflights users on 9/8. 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.
Mon 10/125:30 pm -
1 stop5h 13m
Fri 10/166:58 pm -
1 stop15h 35m
Deal found 9/8![United Airlines logo]()
$740
This United Airlines deal was found by Cheapflights users on 9/8. 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 9/245:30 pm -
1 stop5h 13m
Mon 9/286:58 pm -
1 stop15h 36m
Deal found 9/8![United Airlines logo]()
$775
This United Airlines deal was found by Cheapflights users on 9/7. 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 10/115:30 pm -
1 stop5h 13m
Wed 10/216:58 pm -
1 stop15h 36m
Deal found 9/7![United Airlines logo]()
$803
Best flights from Boise to Sioux CityDiscover carefully curated flight deals from Boise to Sioux City that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2026.
Discover carefully curated flight deals from Boise to Sioux City that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2026.
This United Airlines deal was found by Cheapflights users on 9/8. 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 1/2711:48 am -
2 stops10h 54m
Sat 1/309:03 am -
2 stops13h 32m
Deal found 9/8![United Airlines logo]()
$419
This United Airlines deal was found by Cheapflights users on 9/6. 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 10/165:30 pm -
1 stop5h 13m
Sat 10/246:58 pm -
1 stop15h 54m
Deal found 9/6![United Airlines logo]()
$604
Last-minute flights from Boise to Sioux CityDiscover last-minute flight deals from Boise to Sioux City. Data last updated September 11, 2026 and is based on user searches.
Discover last-minute flight deals from Boise to Sioux City. Data last updated September 11, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 9/8. 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 9/245:30 pm -
1 stop5h 13m
Mon 9/286:58 pm -
1 stop15h 36m
Deal found 9/8![United Airlines logo]()
$775
This United Airlines deal was found by Cheapflights users on 9/7. 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 10/115:30 pm -
1 stop5h 13m
Wed 10/216:58 pm -
1 stop15h 36m
Deal found 9/7![United Airlines logo]()
$803
This United Airlines deal was found by Cheapflights users on 9/8. 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.
Mon 10/125:30 pm -
1 stop5h 13m
Fri 10/166:58 pm -
1 stop15h 35m
Deal found 9/8![United Airlines logo]()
$740
This United Airlines deal was found by Cheapflights users on 9/6. 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 10/165:30 pm -
1 stop5h 13m
Sat 10/246:58 pm -
1 stop15h 54m
Deal found 9/6![United Airlines logo]()
$604
This United Airlines deal was found by Cheapflights users on 9/7. 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 10/165:30 pm -
1 stop5h 13m
Sun 10/256:45 pm -
1 stop27h 47m
Deal found 9/7![United Airlines logo]()
$615
Find flight deals from Boise to Sioux City
Discover tips and strategies to find the most affordable flight options for your journey from Boise (BOI) to Sioux City (SUX). 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 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $414 (United Airlines) |
Cheapflights Fare Finder
Customize your flight search to find flights from Boise to Sioux City 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 11, 2026.
Use the filters below to find and compare flights from Boise to Sioux City that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BoiseSioux City
BOI Boise Air Term. Gowen Fld - SUX Sioux City Sioux Gateway
BOISUX
Boise Air Term. Gowen Fld
Wed 1/27
11:48 am-11:42 pm
2 stops10h 54m
Sioux City Sioux Gateway
Sat 1/30
9:03 am-9:35 pm
2 stops13h 32m
$419
Quickest round-trip
BoiseSioux City
BOI Boise Air Term. Gowen Fld - SUX Sioux City Sioux Gateway
BOISUX
Boise Air Term. Gowen Fld
Fri 10/16
5:30 pm-11:43 pm
1 stop5h 13m
Sioux City Sioux Gateway
Sat 10/24
6:58 pm-9:52 am
1 stop15h 54m
$604
Sorted by cheapest first
- Most accurate provider: When it comes to deals on Boise-Sioux City flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boise-Sioux City flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boise-Sioux City flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Boise-Sioux City 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 Boise-Sioux City 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 Boise to Sioux City
Have a flexible travel schedule? Discover the best time to fly to Sioux City from Boise with our price prediction graph.
BOI-SUX
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
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