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Rapid City

$168+ Cheap flights from Ontario to Rapid City (ONT - RAP)

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 9/12. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — RAP
Sep 15 — Sep 221
Tue 9/15
Tue 9/22
1 adult, Economy
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Cheap flight deals from Ontario to Rapid City

Cheapest flights from Ontario to Rapid City
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 August 16, 2026.

This American Airlines deal was found by Cheapflights users on 8/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/166:15 am -
1 stop4h 51m
Tue 9/2211:45 am -
1 stop7h 32m
Deal found 8/13$350
This United Airlines deal was found by Cheapflights users on 8/14. 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.
Sat 8/295:00 am -
1 stop6h 24m
Wed 9/210:26 am -
2 stops8h 50m
Deal found 8/14$384
This American Airlines deal was found by Cheapflights users on 8/11. 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.
Tue 9/86:15 am -
1 stop4h 53m
Tue 9/154:56 pm -
1 stop6h 41m
Deal found 8/11$390
This United Airlines deal was found by Cheapflights users on 8/12. 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 9/159:01 am -
2 stops10h 37m
Tue 9/227:00 am -
1 stop6h 50m
Deal found 8/12$393
This United Airlines deal was found by Cheapflights users on 8/14. 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.
Thu 10/85:00 am -
1 stop5h 55m
Tue 10/137:05 am -
1 stop6h 41m
Deal found 8/14$412
This United Airlines deal was found by Cheapflights users on 8/11. 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 10/311:29 pm -
1 stop4h 50m
Wed 11/44:10 pm -
1 stop5h 41m
Deal found 8/11$419
This United Airlines deal was found by Cheapflights users on 8/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/141:29 pm -
1 stop4h 50m
Wed 11/185:00 am -
2 stops8h 29m
Deal found 8/13$424
This United Airlines deal was found by Cheapflights users on 8/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/15:00 am -
1 stop5h 55m
Sat 9/57:00 am -
1 stop6h 50m
Deal found 8/13$444

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 August 16, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$350
(American Airlines)

One-way from

$168
(Kiwi.com)

Popular in

September

Cheapest in

October

Average price

$414
Provider with most accurate pricing for Ontario-Rapid City flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Rapid City flights.
Search Deals
From Ontario to Rapid City
Search Deals
One-way flight from Ontario to Rapid City
Search Deals
High demand for flights, 5% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2026
Search Deals

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 2,558,603 searches. Data last updated August 16, 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

Price

Cheapest round-trip

OntarioRapid City

ONT Ontario - RAP Rapid City

ONTRAP

Ontario

Sat 8/29

5:00 am-12:24 pm

1 stop6h 24m

Rapid City

Wed 9/2

10:26 am-6:16 pm

2 stops8h 50m

$384
Quickest round-trip

OntarioRapid City

ONT Ontario - RAP Rapid City

ONTRAP

Ontario

Sat 10/31

1:29 pm-7:19 pm

1 stop4h 50m

Rapid City

Wed 11/4

4:10 pm-8:51 pm

1 stop5h 41m

$419

OntarioRapid City

ONT Ontario - RAP Rapid City

ONTRAP

Ontario

Wed 10/28

5:00 am-11:58 am

1 stop5h 58m

Rapid City

Tue 11/3

8:45 am-12:33 pm

1 stop4h 48m

$419

OntarioRapid City

ONT Ontario - RAP Rapid City

ONTRAP

Ontario

Sat 11/14

1:29 pm-7:19 pm

1 stop4h 50m

Rapid City

Wed 11/18

4:10 pm-8:51 pm

1 stop5h 41m

$419

OntarioRapid City

ONT Ontario - RAP Rapid City

ONTRAP

Ontario

Wed 10/28

1:29 pm-8:43 pm

1 stop6h 14m

Rapid City

Sun 11/1

5:00 am-12:29 pm

2 stops8h 29m

$475

OntarioRapid City

ONT Ontario - RAP Rapid City

ONTRAP

Ontario

Thu 1/21

5:00 am-11:13 am

1 stop5h 13m

Rapid City

Sun 1/24

7:05 am-12:33 pm

1 stop6h 28m

$493

OntarioRapid City

ONT Ontario - RAP Rapid City

ONTRAP

Ontario

Wed 9/9

5:00 am-11:55 am

1 stop5h 55m

Rapid City

Sat 9/12

7:00 am-12:50 pm

1 stop6h 50m

$543

OntarioRapid City

ONT Ontario - RAP Rapid City

ONTRAP

Ontario

Fri 9/11

1:18 pm-8:38 pm

1 stop6h 20m

Rapid City

Mon 9/14

5:48 pm-10:59 pm

2 stops30h 11m

$544

OntarioRapid City

ONT Ontario - RAP Rapid City

ONTRAP

Ontario

Tue 9/8

5:00 am-11:55 am

1 stop5h 55m

Rapid City

Tue 9/15

7:00 am-2:01 pm

2 stops8h 01m

$548
Cheapest one-way

OntarioRapid City

ONT Ontario - RAP Rapid City

ONTRAP

Ontario

Sat 9/12

2:30 pm-2:44 pm

1 stop23h 14m

$168

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/15

Showing 1-10 of 16 resultsSorted by cheapest first
1
2

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 August.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • 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.
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 $343). Flying from Ontario to Rapid City in September is currently the most expensive (average of $533). 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 typical for this route at the moment.

Ontario to Rapid City flights typically cost between $346 and $437 in September.
The cheapest round-trip price found within the last 5 days was $350 on American Airlines (Sep 16-Sep 22).

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 August 16, 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.
United Airlines
7.4
Good
10,104 reviews

Boarding

7.7

Crew

8.1

Food

6.7

Overall

7.4

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
United Airlines
7.4
Good
10,104 reviews
United Airlines
7.4
Good
10,104 reviews

Boarding

7.7

Crew

8.1

Food

6.7

Overall

7.4

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
American Airlines
7.1
Good
11,950 reviews
United Airlines
7.4
Good
10,104 reviews

Boarding

7.7

Crew

8.1

Food

6.7

Overall

7.4

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.

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.

  • How long is the flight from Ontario to Rapid City?

    A quick flight from Ontario to Rapid City can take about 6h 24m. United Airlines provides one of the quickest options available for as low as $384. The distance from Ontario to Rapid City is about 1038 mi.

  • What are the cheapest airlines flying from Ontario to Rapid City round-trip?

    Cheapflights users have booked flights from Ontario to Rapid City round-trip from $258. Another airline that can offer you cheap pricing is American Airlines. Users have found that United Airlines is 43% cheaper than the other options available to this destination.

  • Can I find deals for flights from Ontario to Rapid City that include hotel bookings?

    Yes. In addition to deals on Ontario to Rapid City flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Rapid City?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Rapid City.

  • Can I find deals for business class flights from Ontario to Rapid City?

    Yes. Cheapflights offers flight deals from Ontario to Rapid City by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • 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 $343). Flying from Ontario to Rapid City in September is currently the most expensive (average of $533). 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.

See more FAQs

Traveling to a place near Rapid City?

Book flights to Rapid City if you plan to visit one of these locations
Keystone
Deadwood
Spearfish

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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 2,558,603 searches. Data last updated August 16, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$258Average$399FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$328Average$428FlexibilityNo cancel feeOn-time71%

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