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Rapid City

$251+ 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 4/14. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — RAP
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
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 December 4, 2025.

This United Airlines deal was found by Cheapflights users on 12/3. 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 12/251:40 pmONT - RAP
1 stop6h 09mUnited Airlines
Mon 1/53:35 pmRAP - ONT
1 stop6h 33mUnited Airlines
Deal found 12/3$310
This United Airlines deal was found by Cheapflights users on 12/2. 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 12/275:05 amONT - RAP
1 stop6h 41mUnited Airlines
Fri 1/28:45 amRAP - ONT
1 stop4h 53mUnited Airlines
Deal found 12/2$461
This United Airlines deal was found by Cheapflights users on 12/1. 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 12/165:05 amONT - RAP
1 stop5h 21mUnited Airlines
Wed 12/172:55 pmRAP - ONT
1 stop6h 47mUnited Airlines
Deal found 12/1$511
This United Airlines deal was found by Cheapflights users on 12/3. 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 12/231:40 pmONT - RAP
1 stop4h 32mUnited Airlines
Tue 12/308:45 amRAP - ONT
1 stop4h 53mUnited Airlines
Deal found 12/3$551
This United Airlines deal was found by Cheapflights users on 12/1. 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 12/105:05 amONT - RAP
1 stop5h 21mUnited Airlines
Sat 1/311:11 amRAP - ONT
1 stop10h 56mUnited Airlines
Deal found 12/1$579
This United Airlines deal was found by Cheapflights users on 12/2. 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 12/195:05 amONT - RAP
1 stop5h 27mUnited Airlines
Sun 12/218:45 amRAP - ONT
1 stop4h 53mUnited Airlines
Deal found 12/2$611
This United Airlines deal was found by Cheapflights users on 12/2. 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 12/85:05 amONT - RAP
1 stop5h 21mUnited Airlines
Tue 12/94:35 pmRAP - ONT
1 stop5h 07mUnited Airlines
Deal found 12/2$646
This United Airlines deal was found by Cheapflights users on 12/2. 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 12/235:05 amONT - RAP
1 stop6h 41mUnited Airlines
Sun 12/288:45 amRAP - ONT
1 stop4h 53mUnited Airlines
Deal found 12/2$649

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 December 4, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$310
(United Airlines)

One-way from

$251
(Delta)

Popular in

March

Cheapest in

January

Average price

$403
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
Highest demand for flights based on searches. 20% potential increase in price ($113 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 December 4, 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

Thu 12/25

1:40 pm-8:49 pm

1 stop6h 09m

Rapid City

Mon 1/5

3:35 pm-9:08 pm

1 stop6h 33m

$310

OntarioRapid City

ONT - RAP

ONTRAP

Ontario

Thu 1/1

5:05 am-11:32 am

1 stop5h 27m

Rapid City

Thu 1/8

4:40 pm-8:58 pm

1 stop5h 18m

$339

OntarioRapid City

ONT - RAP

ONTRAP

Ontario

Fri 2/6

5:05 am-11:25 am

1 stop5h 20m

Rapid City

Sun 2/8

2:40 pm-8:58 pm

1 stop7h 18m

$339

OntarioRapid City

ONT - RAP

ONTRAP

Ontario

Wed 1/7

1:24 pm-6:47 pm

1 stop4h 23m

Rapid City

Wed 1/14

7:00 am-12:47 pm

1 stop6h 47m

$339

OntarioRapid City

ONT - RAP

ONTRAP

Ontario

Tue 2/3

6:00 am-6:47 pm

2 stops11h 47m

Rapid City

Thu 2/5

2:40 pm-10:53 pm

2 stops9h 13m

$381

OntarioRapid City

ONT - RAP

ONTRAP

Ontario

Mon 5/4

4:15 pm-10:08 pm

1 stop4h 53m

Rapid City

Sat 5/9

10:45 am-3:18 pm

1 stop5h 33m

$409

OntarioRapid City

ONT - RAP

ONTRAP

Ontario

Mon 4/13

5:10 am-11:09 am

1 stop4h 59m

Rapid City

Sat 4/18

2:45 pm-8:46 pm

1 stop7h 01m

$409

OntarioRapid City

ONT - RAP

ONTRAP

Ontario

Tue 4/14

1:00 pm-9:58 pm

2 stops7h 58m

$251

OntarioRapid City

ONT - RAP

ONTRAP

Ontario

Mon 1/19

5:05 am-1:12 pm

1 stop7h 07m

$256

OntarioRapid City

ONT - RAP

ONTRAP

Ontario

Mon 4/13

5:10 am-11:09 am

1 stop4h 59m

$256

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/4

Showing 1-10 of 18 results
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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Ontario-Rapid City flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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, December is the cheapest month in which you can book a flight from Ontario to Rapid City (average of $98). Flying from Ontario to Rapid City in March is currently the most expensive (average of $374). 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 December 4, 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 7% on your trip compared to booking a flight in the afternoon.

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 December 4, 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
9,066 reviews

Food

6.6

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
9,066 reviews
United Airlines
7.4
Good
9,066 reviews

Food

6.6

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
American Airlines
7.2
Good
11,047 reviews
United Airlines
7.4
Good
9,066 reviews

Food

6.6

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

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 09m. United Airlines provides one of the quickest options available for as low as $310. 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 40% 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, December is the cheapest month in which you can book a flight from Ontario to Rapid City (average of $98). Flying from Ontario to Rapid City in March is currently the most expensive (average of $374). 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
Sturgis
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 December 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$258Average$496FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$258Average$397FlexibilityNo cancel feeOn-time69%

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