$285+ Cheap flights from Ontario to Rapid City (ONT - 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 9/24. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — RAP
Oct 12 — Oct 191
Round-trip
1 adult, Economy
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Find cheap flights from Ontario 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
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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 Ontario to Rapid City
Cheapest
Best
Last-minute
One-way
Cheapest flights from Ontario to Rapid CityExplore the most affordable flight options available from Ontario to Rapid City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 12, 2026.
Explore the most affordable flight options available from Ontario to Rapid City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 12, 2026.
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/912:42 pm -
1 stop7h 45m
Sat 12/121:09 pm -
1 stop6h 38m
Deal found 9/9![American Airlines logo]()
$329
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/97:00 am -
2 stops14h 46m
Sat 12/126:42 am -
2 stops10h 46m
Deal found 9/9![Delta logo]()
$339
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 12/911:26 am -
2 stops9h 42m
Sat 12/127:00 am -
1 stop6h 34m
Deal found 9/9![United Airlines logo]()
$365
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.
Tue 10/275:00 am -
1 stop5h 58m
Fri 12/112:35 pm -
1 stop6h 45m
Deal found 9/9![United Airlines logo]()
$419
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 11/41:29 pm -
1 stop4h 50m
Sun 11/85:00 am -
2 stops8h 29m
Deal found 9/9![United Airlines logo]()
$424
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 9/251:24 pm -
1 stop6h 28m
Tue 9/298:57 am -
2 stops9h 44m
Deal found 9/10![United Airlines logo]()
$439
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/102:22 pm -
1 stop6h 34m
Sat 10/175:04 pm -
1 stop7h 48m
Deal found 9/8![American Airlines logo]()
$452
Best flights from Ontario to Rapid CityDiscover carefully curated flight deals from Ontario to Rapid City that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 12, 2026.
Discover carefully curated flight deals from Ontario to Rapid City that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 12, 2026.
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/67:00 am -
2 stops14h 39m
Sat 1/911:30 am -
2 stops12h 18m
Deal found 9/9![Delta logo]()
$339
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 2/65:00 am -
1 stop6h 30m
Tue 2/92:40 pm -
1 stop6h 40m
Deal found 9/9![United Airlines logo]()
$419
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 11/41:29 pm -
1 stop4h 50m
Sun 11/85:00 am -
2 stops8h 29m
Deal found 9/9![United Airlines logo]()
$424
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 10/145:00 am -
1 stop5h 55m
Wed 10/217:05 am -
1 stop6h 41m
Deal found 9/12![United Airlines logo]()
$439
Last-minute flights from Ontario to Rapid CityDiscover last-minute flight deals from Ontario to Rapid City. Data last updated September 12, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Rapid City. Data last updated September 12, 2026 and is based on user searches.
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/116:15 am -
1 stop4h 51m
Sun 9/134:25 pm -
1 stop7h 18m
Deal found 9/10![American Airlines logo]()
$489
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/126:15 am -
1 stop4h 51m
Mon 9/1411:45 am -
1 stop7h 32m
Deal found 9/8![American Airlines logo]()
$480
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/232:30 pm -
1 stop23h 14m
Sun 9/273:34 pm -
1 stop16h 30m
Deal found 9/8![Multiple Airlines logo]()
$491
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 9/251:24 pm -
1 stop6h 28m
Tue 9/298:57 am -
2 stops9h 44m
Deal found 9/10![United Airlines logo]()
$439
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 10/75:00 am -
1 stop5h 55m
Sat 10/177:05 am -
1 stop6h 41m
Deal found 9/8![United Airlines logo]()
$469
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/102:22 pm -
1 stop6h 34m
Sat 10/175:04 pm -
1 stop7h 48m
Deal found 9/8![American Airlines logo]()
$452
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.
Sat 10/101:52 pm -
2 stops7h 38m
Sat 10/177:05 am -
1 stop6h 41m
Deal found 9/8![United Airlines logo]()
$496
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 10/141:52 pm -
2 stops7h 38m
Wed 10/217:05 am -
1 stop6h 41m
Deal found 9/12![United Airlines logo]()
$495
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.
Tue 10/275:00 am -
1 stop5h 58m
Fri 12/112:35 pm -
1 stop6h 45m
Deal found 9/9![United Airlines logo]()
$419
One-way flights from Ontario to Rapid CitySearch for one-way flight options from Ontario to Rapid City. Find affordable one-way fares based on user searches. Data last updated September 12, 2026.
Search for one-way flight options from Ontario to Rapid City. Find affordable one-way fares based on user searches. Data last updated September 12, 2026.
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/248:00 am -
1 stop5h 44m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Multiple Airlines logo]()
$285
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/2511:59 pm -
1 stop8h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![American Airlines logo]()
$309
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 10/85:00 am -
1 stop5h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![United Airlines logo]()
$350
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.
Sat 11/149:25 am -
2 stops10h 18m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![United Airlines logo]()
$355
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/246:15 am -
1 stop4h 51m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![American Airlines logo]()
$384
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.
Tue 9/225:00 am -
1 stop5h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/12![United Airlines logo]()
$386
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 9/175:00 am -
1 stop6h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![United Airlines logo]()
$428
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.
Fri 10/91:52 pm -
2 stops21h 34m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![United Airlines logo]()
$470
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 10/256:00 am -
2 stops10h 09m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![United Airlines logo]()
$485
Find flight deals from Ontario to Rapid City
Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) 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 12, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $329 (American Airlines) |
One-way from | $285 (Kiwi.com) |
Popular in | May |
Cheapest in | October |
Average price | $510 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario 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 12, 2026.
Use the filters below to find and compare flights from Ontario to Rapid City that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioRapid City
ONT Ontario - RAP Rapid City
ONTRAP
Ontario
Wed 1/6
7:00 am-10:39 pm
2 stops14h 39m
Rapid City
Sat 1/9
11:30 am-10:48 pm
2 stops12h 18m
$339
OntarioRapid City
ONT Ontario - RAP Rapid City
ONTRAP
Ontario
Sat 11/14
1:29 pm-8:43 pm
1 stop6h 14m
Rapid City
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$350
Quickest round-trip
OntarioRapid City
ONT Ontario - RAP Rapid City
ONTRAP
Ontario
Thu 10/8
5:00 am-11:55 am
1 stop5h 55m
Rapid City
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$350
OntarioRapid City
ONT Ontario - RAP Rapid City
ONTRAP
Ontario
Tue 9/22
5:00 am-11:55 am
1 stop5h 55m
Rapid City
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$386
OntarioRapid City
ONT Ontario - RAP Rapid City
ONTRAP
Ontario
Sat 2/6
5:00 am-12:30 pm
1 stop6h 30m
Rapid City
Tue 2/9
2:40 pm-8:20 pm
1 stop6h 40m
$419
OntarioRapid City
ONT Ontario - RAP Rapid City
ONTRAP
Ontario
Wed 11/4
1:29 pm-7:19 pm
1 stop4h 50m
Rapid City
Sun 11/8
5:00 am-12:29 pm
2 stops8h 29m
$424
OntarioRapid City
ONT Ontario - RAP Rapid City
ONTRAP
Ontario
Fri 9/18
5:00 am-11:55 am
1 stop5h 55m
Rapid City
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$428
OntarioRapid City
ONT Ontario - RAP Rapid City
ONTRAP
Ontario
Thu 9/17
5:00 am-12:24 pm
1 stop6h 24m
Rapid City
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$428
OntarioRapid City
ONT Ontario - RAP Rapid City
ONTRAP
Ontario
Sun 9/20
5:00 am-11:55 am
1 stop5h 55m
Rapid City
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$428
OntarioRapid City
ONT Ontario - RAP Rapid City
ONTRAP
Ontario
Wed 10/14
5:00 am-11:55 am
1 stop5h 55m
Rapid City
Wed 10/21
7:05 am-12:46 pm
1 stop6h 41m
$439
Showing 1-10 of 11 resultsSorted by cheapest first
Compare providers for flights from Ontario 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 Ontario 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 Ontario-Rapid City flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Rapid City flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Rapid City flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Ontario-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 Ontario-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 Ontario to Rapid City
Have a flexible travel schedule? Discover the best time to fly to Rapid City from Ontario with our price prediction graph.
ONT-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.
Cheapflights Insights
Everything you need to know about your flight from Ontario to Rapid City
What is the cheapest month to book a flight from Ontario to Rapid City?
Currently, October is the cheapest month in which you can book a flight from Ontario to Rapid City (average of $360). Flying from Ontario to Rapid City in May is currently the most expensive (average of $522). 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.
How much does it cost to fly round-trip from Ontario to Rapid City?
Airfare is below average for this route at the moment.
Ontario to Rapid City flights typically cost between $379 and $586 in December.The cheapest round-trip price found within the last 5 days was $329 on American Airlines (Dec 9-Dec 12).
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 12, 2026.
See what other customers who have flown with United Airlines and American Airlines from Ontario to Rapid City have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.3
Boarding
7.7
Food
6.7
Entertainment
7.1
Overall
7.4
Crew
8.1
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - EWR
Comfort
7.3
Boarding
7.7
Food
6.7
Entertainment
7.1
Overall
7.4
Crew
8.1
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - EWR
Comfort
7.3
Boarding
7.7
Food
6.7
Entertainment
7.1
Overall
7.4
Crew
8.1
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - EWR
Related info for your journey
Find useful and relevant information for your journey from Ontario 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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Ontario and Rapid City flights
Browse other Ontario and Rapid City flight options. Last updated on September 12, 2026.
Other flights from Ontario
Browse through other flights departing from Ontario. Flights are based on user searches made on Cheapflights and were last updated on September 12, 2026.
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Check out other popular destinations found by fellow travelers in 2026
Other flights to Rapid City
Explore flights to Rapid City departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 12, 2026.
Top 2 airlines flying from Ontario to Rapid City
Discover the top 2 airlines that operate flights from Ontario 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 12, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$258 | Average$401 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$328 | Average$419 | FlexibilityNo cancel fee | On-time71% |