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$133+ Cheap flights from Rapid City to Ontario (RAP - ONT)

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 9/20. Fares are subject to change and may not be available on all flights or dates of travel.
RAP — ONT
Aug 22 — Aug 291
Sat 8/22
Sat 8/29
1 adult, Economy
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Cheap flight deals from Rapid City to Ontario

Cheapest flights from Rapid City to Ontario
Explore the most affordable flight options available from Rapid City to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 23, 2026.

This American Airlines deal was found by Cheapflights users on 7/20. 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 8/1811:45 am
RAP
-
ONT
1 stop7h 30m
American Airlines
Mon 8/246:15 am
ONT
-
RAP
1 stop4h 53m
American Airlines
Deal found 7/20$319
This United Airlines deal was found by Cheapflights users on 7/20. 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 8/1811:22 am
RAP
-
ONT
2 stops9h 39m
United Airlines
Mon 8/241:18 pm
ONT
-
RAP
1 stop6h 19m
United Airlines
Deal found 7/20$324
This United Airlines deal was found by Cheapflights users on 7/21. 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 8/2111:22 am
RAP
-
ONT
2 stops12h 37m
United Airlines
Sun 8/231:18 pm
ONT
-
RAP
1 stop6h 19m
United Airlines
Deal found 7/21$334
This American Airlines deal was found by Cheapflights users on 7/19. 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 8/165:02 pm
RAP
-
ONT
1 stop6h 57m
American Airlines
Sun 8/236:15 am
ONT
-
RAP
1 stop4h 53m
American Airlines
Deal found 7/19$374
This United Airlines deal was found by Cheapflights users on 7/22. 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 9/34:41 pm
RAP
-
ONT
1 stop5h 12m
United Airlines
Thu 9/105:00 am
ONT
-
RAP
1 stop5h 55m
United Airlines
Deal found 7/22$384
This United Airlines deal was found by Cheapflights users on 7/21. 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 8/87:00 am
RAP
-
ONT
1 stop6h 47m
United Airlines
Wed 8/125:00 am
ONT
-
RAP
1 stop6h 24m
United Airlines
Deal found 7/21$402
This United Airlines deal was found by Cheapflights users on 7/20. 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
RAP
-
ONT
2 stops11h 41m
United Airlines
Wed 9/25:00 am
ONT
-
RAP
1 stop5h 55m
United Airlines
Deal found 7/20$414

Find flight deals from Rapid City to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Rapid City (RAP) to Ontario (ONT). 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 July 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$319
(American Airlines)

One-way from

$133
(Kiwi.com)

Popular in

March

Cheapest in

January

Average price

$348
Provider with most accurate pricing for Rapid City-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Rapid City-Ontario flights.
Search Deals
From Rapid City to Ontario
Search Deals
One-way flight from Rapid City to Ontario
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($38 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Rapid City to Ontario 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 July 23, 2026.
Use the filters below to find and compare flights from Rapid City to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Rapid CityOntario

RAP - ONT

RAPONT

Rapid City

Tue 8/18

11:22 am-8:01 pm

2 stops9h 39m

Ontario

Mon 8/24

1:18 pm-8:37 pm

1 stop6h 19m

$324
Quickest round-trip

Rapid CityOntario

RAP - ONT

RAPONT

Rapid City

Thu 9/3

4:41 pm-8:53 pm

1 stop5h 12m

Ontario

Thu 9/10

5:00 am-11:55 am

1 stop5h 55m

$384

Rapid CityOntario

RAP - ONT

RAPONT

Rapid City

Thu 9/24

7:05 am-12:46 pm

1 stop6h 41m

Ontario

Sun 9/27

5:00 am-12:26 pm

1 stop6h 26m

$384

Rapid CityOntario

RAP - ONT

RAPONT

Rapid City

Sat 8/29

7:00 am-3:41 pm

2 stops9h 41m

Ontario

Tue 9/1

5:00 am-12:24 pm

1 stop6h 24m

$414

Rapid CityOntario

RAP - ONT

RAPONT

Rapid City

Sat 8/29

5:00 am-3:41 pm

2 stops11h 41m

Ontario

Wed 9/2

5:00 am-11:55 am

1 stop5h 55m

$414

Rapid CityOntario

RAP - ONT

RAPONT

Rapid City

Thu 8/20

11:22 am-6:11 pm

2 stops7h 49m

Ontario

Thu 8/27

5:00 am-11:55 am

1 stop5h 55m

$424
Cheapest one-way

Rapid CityOntario

RAP - ONT

RAPONT

Rapid City

Thu 8/6

10:06 pm-8:03 am

1 stop10h 57m

$141

Rapid CityOntario

RAP - ONT

RAPONT

Rapid City

Mon 9/28

9:09 pm-4:10 pm

2 stops20h 01m

$246

Rapid CityOntario

RAP - ONT

RAPONT

Rapid City

Fri 8/21

4:30 pm-11:34 pm

2 stops8h 04m

$309

Rapid CityOntario

RAP - ONT

RAPONT

Rapid City

Mon 9/28

7:05 am-12:46 pm

1 stop6h 41m

$321

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/19

Showing 1-10 of 15 resultsSorted by cheapest first
1
2

Compare providers for flights from Rapid City to Ontario

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 Rapid City to Ontario in July.
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 Rapid City-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Rapid City-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Rapid City-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Rapid City-Ontario 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 Rapid City-Ontario 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 Rapid City to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Rapid City 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.

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated July 23, 2026.
Read reviews from past customers who have flown United Airlines from Rapid City to Ontario. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
10,024 reviews

Comfort

7.3

Overall

7.4

Boarding

7.7

Crew

8.1

Food

6.6

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Simon,Jun 2024

LAS - LAX

Basic and no-frills. Late timing put pressure on disembarking and making connections.
United Airlines
7.4
Good
10,024 reviews
United Airlines
7.4
Good
10,024 reviews

Comfort

7.3

Overall

7.4

Boarding

7.7

Crew

8.1

Food

6.6

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Simon,Jun 2024

LAS - LAX

Basic and no-frills. Late timing put pressure on disembarking and making connections.

Related info for your journey

Find useful and relevant information for your journey from Rapid City to Ontario. 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 Rapid City to Ontario?

    For as low as $324, United Airlines can have you in Ontario from Rapid City in 9h 39m. The distance between Rapid City and Ontario is about 1038 mi.

  • What is the cheapest airline to fly from Rapid City to Ontario round-trip?

    According to our current data, United Airlines ($236), offers the cheapest pricing from Rapid City to Ontario.

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

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

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

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

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

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

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Rapid City to Ontario

Discover the top airline that operate flights from Rapid City to Ontario. 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 July 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$236Average$415FlexibilityNo cancel feeOn-time69%

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