$339+ Cheap flights from Boise to Rapid City (BOI - RAP)
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 10/23. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — RAP
Oct 17 — Oct 241
Round-trip
1 adult, Economy
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Find cheap flights from Boise to Rapid City 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 Boise to Rapid City
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Best
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Cheapest flights from Boise to Rapid CityExplore the most affordable flight options available from Boise to Rapid City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2026.
Explore the most affordable flight options available from Boise to Rapid City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2026.
This Delta deal was found by Cheapflights users on 9/15. 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.
Fri 10/235:30 am -
1 stop8h 27m
Sat 11/146:45 am -
1 stop7h 06m
Deal found 9/15![Delta logo]()
$339
This Delta deal was found by Cheapflights users on 9/16. 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.
Fri 10/235:30 am -
1 stop5h 15m
Sun 10/256:39 am -
1 stop5h 56m
Deal found 9/16![Delta logo]()
$354
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.
Tue 9/292:44 pm -
1 stop6h 08m
Sat 10/35:53 pm -
1 stop4h 40m
Deal found 9/14![United Airlines logo]()
$369
This Delta deal was found by Cheapflights users on 9/16. 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 10/173:00 pm -
1 stop7h 30m
Sat 10/246:39 am -
1 stop5h 56m
Deal found 9/16![Delta logo]()
$384
This United Airlines deal was found by Cheapflights users on 9/15. 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 9/262:44 pm -
1 stop6h 08m
Sat 10/35:53 pm -
1 stop4h 40m
Deal found 9/15![United Airlines logo]()
$399
This United Airlines deal was found by Cheapflights users on 9/15. 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 10/135:00 am -
1 stop4h 28m
Tue 10/205:00 am -
1 stop4h 34m
Deal found 9/15![United Airlines logo]()
$403
This Delta deal was found by Cheapflights users on 9/16. 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 10/243:00 pm -
1 stop7h 30m
Mon 10/266:39 am -
1 stop5h 56m
Deal found 9/16![Delta logo]()
$453
This United Airlines deal was found by Cheapflights users on 9/15. 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 10/96:25 am -
1 stop6h 01m
Tue 10/135:00 am -
1 stop4h 34m
Deal found 9/15![United Airlines logo]()
$464
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/51:30 pm -
1 stop7h 29m
Thu 10/82:35 pm -
1 stop23h 20m
Deal found 9/13![Multiple Airlines logo]()
$469
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.
Mon 10/125:30 pm -
1 stop5h 00m
Mon 10/195:00 am -
1 stop4h 34m
Deal found 9/14![United Airlines logo]()
$490
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/231:30 pm -
1 stop7h 46m
Sun 10/2512:29 pm -
2 stops27h 18m
Deal found 9/13![Multiple Airlines logo]()
$512
This Delta deal was found by Cheapflights users on 9/16. 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.
Tue 10/135:30 am -
1 stop8h 27m
Wed 10/144:38 pm -
1 stop7h 21m
Deal found 9/16![Delta logo]()
$567
Best flights from Boise to Rapid CityDiscover carefully curated flight deals from Boise to Rapid City that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 17, 2026.
Discover carefully curated flight deals from Boise to Rapid City that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 17, 2026.
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/233:00 pm -
1 stop7h 30m
Sun 10/256:39 am -
1 stop5h 56m
Deal found 9/13![Delta logo]()
$339
This United Airlines deal was found by Cheapflights users on 9/15. 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 2/62:45 pm -
1 stop4h 23m
Tue 2/94:40 pm -
1 stop4h 55m
Deal found 9/15![United Airlines logo]()
$419
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/231:30 pm -
1 stop7h 46m
Sun 10/2512:29 pm -
2 stops27h 18m
Deal found 9/13![Multiple Airlines logo]()
$512
This Delta deal was found by Cheapflights users on 9/16. 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.
Fri 10/235:30 am -
1 stop5h 15m
Sat 11/146:45 am -
1 stop7h 06m
Deal found 9/16![Delta logo]()
$339
This Delta deal was found by Cheapflights users on 9/16. 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 10/173:00 pm -
1 stop7h 30m
Sat 10/246:39 am -
1 stop5h 56m
Deal found 9/16![Delta logo]()
$384
Last-minute flights from Boise to Rapid CityDiscover last-minute flight deals from Boise to Rapid City. Data last updated September 17, 2026 and is based on user searches.
Discover last-minute flight deals from Boise to Rapid City. Data last updated September 17, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 9/15. 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 9/262:44 pm -
1 stop6h 08m
Sat 10/35:53 pm -
1 stop4h 40m
Deal found 9/15![United Airlines logo]()
$399
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.
Tue 9/292:44 pm -
1 stop6h 08m
Sat 10/35:53 pm -
1 stop4h 40m
Deal found 9/14![United Airlines logo]()
$369
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/51:30 pm -
1 stop7h 29m
Thu 10/82:35 pm -
1 stop23h 20m
Deal found 9/13![Multiple Airlines logo]()
$469
This United Airlines deal was found by Cheapflights users on 9/15. 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 10/96:25 am -
1 stop6h 01m
Tue 10/135:00 am -
1 stop4h 34m
Deal found 9/15![United Airlines logo]()
$464
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.
Mon 10/125:30 pm -
1 stop5h 00m
Mon 10/195:00 am -
1 stop4h 34m
Deal found 9/14![United Airlines logo]()
$490
This United Airlines deal was found by Cheapflights users on 9/15. 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 10/135:00 am -
1 stop4h 28m
Tue 10/205:00 am -
1 stop4h 34m
Deal found 9/15![United Airlines logo]()
$403
This Delta deal was found by Cheapflights users on 9/16. 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.
Tue 10/135:30 am -
1 stop8h 27m
Wed 10/144:38 pm -
1 stop7h 21m
Deal found 9/16![Delta logo]()
$567
This Delta deal was found by Cheapflights users on 9/16. 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 10/173:00 pm -
1 stop7h 30m
Sat 10/246:39 am -
1 stop5h 56m
Deal found 9/16![Delta logo]()
$384
This Delta deal was found by Cheapflights users on 9/15. 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.
Fri 10/235:30 am -
1 stop8h 27m
Sat 11/146:45 am -
1 stop7h 06m
Deal found 9/15![Delta logo]()
$339
This Delta deal was found by Cheapflights users on 9/16. 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.
Fri 10/235:30 am -
1 stop5h 15m
Sun 10/256:39 am -
1 stop5h 56m
Deal found 9/16![Delta logo]()
$354
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/231:30 pm -
1 stop7h 46m
Sun 10/2512:29 pm -
2 stops27h 18m
Deal found 9/13![Multiple Airlines logo]()
$512
This Delta deal was found by Cheapflights users on 9/16. 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 10/243:00 pm -
1 stop7h 30m
Mon 10/266:39 am -
1 stop5h 56m
Deal found 9/16![Delta logo]()
$453
Find flight deals from Boise to Rapid City
Discover tips and strategies to find the most affordable flight options for your journey from Boise (BOI) to Rapid City (RAP). 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 17, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $339 (Delta) |
Popular in | December |
Cheapest in | November |
Average price | $443 |
Cheapflights Fare Finder
Customize your flight search to find flights from Boise to Rapid 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 17, 2026.
Use the filters below to find and compare flights from Boise to Rapid City that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BoiseRapid City
BOI Boise Air Term. Gowen Fld - RAP Rapid City
BOIRAP
Boise Air Term. Gowen Fld
Fri 10/23
3:00 pm-10:30 pm
1 stop7h 30m
Rapid City
Sun 10/25
6:39 am-12:35 pm
1 stop5h 56m
$339
BoiseRapid City
BOI Boise Air Term. Gowen Fld - RAP Rapid City
BOIRAP
Boise Air Term. Gowen Fld
Fri 10/23
5:30 am-10:45 am
1 stop5h 15m
Rapid City
Sat 11/14
6:45 am-1:51 pm
1 stop7h 06m
$339
BoiseRapid City
BOI Boise Air Term. Gowen Fld - RAP Rapid City
BOIRAP
Boise Air Term. Gowen Fld
Sat 10/17
3:00 pm-10:30 pm
1 stop7h 30m
Rapid City
Sat 10/24
6:39 am-12:35 pm
1 stop5h 56m
$384
Quickest round-trip
BoiseRapid City
BOI Boise Air Term. Gowen Fld - RAP Rapid City
BOIRAP
Boise Air Term. Gowen Fld
Sat 2/6
2:45 pm-7:08 pm
1 stop4h 23m
Rapid City
Tue 2/9
4:40 pm-9:35 pm
1 stop4h 55m
$419
BoiseRapid City
BOI Boise Air Term. Gowen Fld - RAP Rapid City
BOIRAP
Boise Air Term. Gowen Fld
Fri 10/23
1:30 pm-9:16 pm
1 stop7h 46m
Rapid City
Sun 10/25
12:29 pm-3:47 pm
2 stops27h 18m
$512
Sorted by cheapest first
Compare providers for flights from Boise to Rapid City
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 Boise to Rapid City in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Boise-Rapid City flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boise-Rapid City flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boise-Rapid City flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Boise-Rapid 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-Rapid 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 Rapid City
Have a flexible travel schedule? Discover the best time to fly to Rapid City from Boise with our price prediction graph.
BOI-RAP
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 Rapid City
Get insights into the airlines that provide service to Rapid City. 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 Rapid City. Reviews last updated September 17, 2026.
Get a feel of what it's like to fly with United Airlines from Boise to Rapid City by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.3
Crew
8.1
Entertainment
7.1
Overall
7.4
Food
6.7
Boarding
7.7
Reviews
1 / 20
8.0
ExcellentAsha,Sep 2026
LGA - IAH
Comfort
7.3
Crew
8.1
Entertainment
7.1
Overall
7.4
Food
6.7
Boarding
7.7
Reviews
1 / 20
8.0
ExcellentAsha,Sep 2026
LGA - IAH
Related info for your journey
Find useful and relevant information for your journey from Boise to Rapid City. 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 Rapid City?
Book flights to Rapid City if you plan to visit one of these locationsDeadwood
Keystone
Spearfish
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Boise and Rapid City flights
Browse other Boise and Rapid City flight options. Last updated on September 17, 2026.
Other flights from Boise
Browse through other flights departing from Boise. Flights are based on user searches made on Cheapflights and were last updated on September 17, 2026.
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Explore flights to Rapid City departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 17, 2026.
Top airline flying from Boise to Rapid City
Discover the top airline that operate flights from Boise to Rapid City. 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 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$342 | Average$443 | FlexibilityNo cancel fee | On-time69% |