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Rapid City

$160+ 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 9/25. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — RAP
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheap 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 17, 2025.

Round-trip from

$259
(United Airlines)

One-way from

$160
(Kiwi.com)

Popular in

March

Cheapest in

January

Average price

$464
From Ontario to Rapid City
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One-way flight from Ontario to Rapid City
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Highest demand for flights based on searches. 20% potential increase in price ($110 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find 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 September 17, 2025.

This American Airlines deal was found by Cheapflights users on 9/17. 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 10/1512:47 pmONT - RAP
1 stop7h 32mAmerican Airlines
Wed 10/224:58 pmRAP - ONT
1 stop6h 44mAmerican Airlines
Deal found 9/17$259
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 11/81:15 pmONT - RAP
2 stops8h 21mDelta
Tue 11/1811:07 amRAP - ONT
2 stops12h 48mDelta
Deal found 9/16$269
This United Airlines deal was found by Cheapflights users on 9/17. 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 10/159:36 amONT - RAP
2 stops9h 58mUnited Airlines
Wed 10/228:30 amRAP - ONT
1 stop5h 21mUnited Airlines
Deal found 9/17$279
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 9/301:15 pmONT - RAP
1 stop6h 19mUnited Airlines
Sat 10/49:00 amRAP - ONT
1 stop4h 51mUnited Airlines
Deal found 9/15$289
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.
Wed 12/171:34 pmONT - RAP
1 stop5h 56mUnited Airlines
Sat 1/172:40 pmRAP - ONT
2 stops9h 13mUnited Airlines
Deal found 9/15$312
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/2710:53 amONT - RAP
1 stop9h 00mAmerican Airlines
Sat 10/411:09 amRAP - ONT
1 stop11h 15mAmerican Airlines
Deal found 9/14$329
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.
Sat 9/271:15 pmONT - RAP
1 stop4h 25mUnited Airlines
Sat 10/45:30 amRAP - ONT
2 stops7h 43mUnited Airlines
Deal found 9/14$334
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/225:10 amONT - RAP
1 stop6h 28mUnited Airlines
Sat 10/45:30 amRAP - ONT
2 stops7h 43mUnited Airlines
Deal found 9/16$344
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2212:45 pmONT - RAP
1 stop7h 08mAmerican Airlines
Sat 10/411:09 amRAP - ONT
1 stop11h 15mAmerican Airlines
Deal found 9/15$364

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 September 17, 2025.
Use the filters below to find and compare flights from Ontario to Rapid City that are best for you.

Fly from

Ontario

Fly to

Rapid City

Route

Depart

Return

Price

OntarioRapid City

ONT - RAP

ONTRAP

Ontario

Wed 12/17

1:34 pm-8:30 pm

1 stop5h 56m

Rapid City

Sat 1/17

4:40 pm-8:58 pm

1 stop5h 18m

$259

OntarioRapid City

ONT - RAP

ONTRAP

Ontario

Tue 9/30

1:15 pm-8:34 pm

1 stop6h 19m

Rapid City

Sat 10/4

9:00 am-12:51 pm

1 stop4h 51m

$289

OntarioRapid City

ONT - RAP

ONTRAP

Ontario

Sat 9/27

1:15 pm-6:40 pm

1 stop4h 25m

Rapid City

Sat 10/4

5:30 am-12:13 pm

2 stops7h 43m

$334

OntarioRapid City

ONT - RAP

ONTRAP

Ontario

Wed 10/15

5:05 am-12:37 pm

1 stop6h 32m

Rapid City

Wed 10/22

3:20 pm-8:24 pm

1 stop6h 04m

$339

OntarioRapid City

ONT - RAP

ONTRAP

Ontario

Sat 3/7

5:40 am-11:13 am

1 stop4h 33m

Rapid City

Wed 3/11

7:05 am-12:33 pm

1 stop6h 28m

$364

OntarioRapid City

ONT - RAP

ONTRAP

Ontario

Sat 11/8

1:29 pm-8:26 pm

1 stop5h 57m

Rapid City

Tue 11/18

3:18 pm-10:51 pm

2 stops8h 33m

$369

OntarioRapid City

ONT - RAP

ONTRAP

Ontario

Sun 10/5

6:00 am-5:08 pm

1 stop10h 08m

$207

OntarioRapid City

ONT - RAP

ONTRAP

Ontario

Tue 11/4

5:05 am-11:05 am

1 stop5h 00m

$229

OntarioRapid City

ONT - RAP

ONTRAP

Ontario

Sun 2/1

5:05 am-11:25 am

1 stop5h 20m

$229

OntarioRapid City

ONT - RAP

ONTRAP

Ontario

Fri 10/10

5:05 am-10:57 am

1 stop4h 52m

$229

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/17

Showing 1-10 of 15 results
1
2

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, January is the cheapest month in which you can book a flight from Ontario to Rapid City (average of $348). Flying from Ontario to Rapid City in June is currently the most expensive (average of $501). 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.

What is the cheapest time of day to fly from ONT to RAP?

Find hourly flight availability from Ontario to Rapid City. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 17, 2025.

A simple way to save on the total cost of your ticket is to fly from Ontario to Rapid City in the morning. If you’re flexible enough to do this you can expect to save up to 4% on your trip compared to booking a flight at noon.

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, 2025.
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
8,926 reviews

Entertainment

7.1

Overall

7.4

Boarding

7.7

Comfort

7.3

Crew

8.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Kathy,Jun 2024

RDD - SFO

United has consistently been good. Every now and then there is a crew member that should probably retire, but most of them are excellent.
United Airlines
7.4
Good
8,926 reviews
United Airlines
7.4
Good
8,926 reviews

Entertainment

7.1

Overall

7.4

Boarding

7.7

Comfort

7.3

Crew

8.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Kathy,Jun 2024

RDD - SFO

United has consistently been good. Every now and then there is a crew member that should probably retire, but most of them are excellent.
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,926 reviews

Entertainment

7.1

Overall

7.4

Boarding

7.7

Comfort

7.3

Crew

8.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Kathy,Jun 2024

RDD - SFO

United has consistently been good. Every now and then there is a crew member that should probably retire, but most of them are excellent.

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 5h 56m. United Airlines provides one of the quickest options available for as low as $259. 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 United Airlines. Users have found that American Airlines is 41% 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, January is the cheapest month in which you can book a flight from Ontario to Rapid City (average of $348). Flying from Ontario to Rapid City in June is currently the most expensive (average of $501). 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
Deadwood
Keystone
Sturgis
Spearfish

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Alternative routes for Ontario to Rapid City

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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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$258Average$458FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$258Average$435FlexibilityNo cancel feeOn-time69%

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