HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$261+ 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 7/8. Fares are subject to change and may not be available on all flights or dates of travel.
RAP — ONT
feb. 13 — feb. 201
vie. 2/13
vie. 2/20
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Rapid City to Ontario 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

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

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 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 enero 14, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$359
(United Airlines)

Popular in

December

Cheapest in

August

Average price

$308
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
Highest demand for flights based on searches. 12% potential increase in price ($56 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Find 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 enero 14, 2026.

This United Airlines deal was found by Cheapflights users on 1/12. 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.
mar. 3/32:52 pm
RAP
-
ONT
1 stop6h 58m
United Airlines
mar. 3/105:15 am
ONT
-
RAP
1 stop4h 50m
United Airlines
Deal found 1/12$359
This United Airlines deal was found by Cheapflights users on 1/13. 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.
mié. 4/228:30 am
RAP
-
ONT
2 stops10h 17m
United Airlines
mar. 4/281:34 pm
ONT
-
RAP
1 stop4h 28m
United Airlines
Deal found 1/13$364
This United Airlines deal was found by Cheapflights users on 1/11. 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.
jue. 8/205:30 am
RAP
-
ONT
2 stops7h 50m
United Airlines
mar. 8/256:00 am
ONT
-
RAP
2 stops8h 52m
United Airlines
Deal found 1/11$370
This United Airlines deal was found by Cheapflights users on 1/12. 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.
jue. 3/127:00 am
RAP
-
ONT
1 stop6h 48m
United Airlines
mié. 3/181:50 pm
ONT
-
RAP
1 stop5h 44m
United Airlines
Deal found 1/12$374
This United Airlines deal was found by Cheapflights users on 1/11. 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.
mar. 4/217:00 am
RAP
-
ONT
1 stop6h 38m
United Airlines
jue. 4/301:40 pm
ONT
-
RAP
1 stop6h 03m
United Airlines
Deal found 1/11$419
This United Airlines deal was found by Cheapflights users on 1/13. 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.
vie. 2/277:00 am
RAP
-
ONT
1 stop6h 43m
United Airlines
sáb. 3/75:15 am
ONT
-
RAP
1 stop6h 58m
United Airlines
Deal found 1/13$453
This United Airlines deal was found by Cheapflights users on 1/13. 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.
sáb. 7/114:30 pm
RAP
-
ONT
1 stop4h 47m
United Airlines
sáb. 7/185:00 am
ONT
-
RAP
1 stop5h 13m
United Airlines
Deal found 1/13$479
This United Airlines deal was found by Cheapflights users on 1/12. 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.
sáb. 5/95:00 am
RAP
-
ONT
2 stops8h 22m
United Airlines
sáb. 5/161:40 pm
ONT
-
RAP
1 stop6h 03m
United Airlines
Deal found 1/12$484
This United Airlines deal was found by Cheapflights users on 1/11. 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.
sáb. 1/174:40 pm
RAP
-
ONT
1 stop5h 18m
United Airlines
mié. 1/215:05 am
ONT
-
RAP
1 stop5h 20m
United Airlines
Deal found 1/11$489

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 enero 14, 2026.
Use the filters below to find and compare flights from Rapid City to Ontario that are best for you.

Fly from

Rapid City

Fly to

Ontario

Route

Depart

Return

Price

Rapid CityOntario

RAP - ONT

RAPONT

Rapid City

mar. 3/3

2:52 pm-8:50 pm

1 stop6h 58m

Ontario

mar. 3/10

5:15 am-11:05 am

1 stop4h 50m

$359

Rapid CityOntario

RAP - ONT

RAPONT

Rapid City

jue. 3/12

7:00 am-12:48 pm

1 stop6h 48m

Ontario

mié. 3/18

1:50 pm-8:34 pm

1 stop5h 44m

$374

Rapid CityOntario

RAP - ONT

RAPONT

Rapid City

vie. 2/27

7:00 am-12:43 pm

1 stop6h 43m

Ontario

sáb. 3/7

5:15 am-1:13 pm

1 stop6h 58m

$453

Rapid CityOntario

RAP - ONT

RAPONT

Rapid City

sáb. 1/17

4:40 pm-8:58 pm

1 stop5h 18m

Ontario

mié. 1/21

5:05 am-11:25 am

1 stop5h 20m

$489

Rapid CityOntario

RAP - ONT

RAPONT

Rapid City

mié. 7/8

5:30 am-12:20 pm

2 stops7h 50m

$261

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/13

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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Rapid City-Ontario flight deals on Cheapflights vs. eDreams >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 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 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.

Cheapflights Insights

Everything you need to know about your flight from Rapid City to Ontario

What is the cheapest month to book a flight from Rapid City to Ontario?

Currently, June is the cheapest month in which you can book a flight from Rapid City to Ontario (average of $151). Flying from Rapid City to Ontario in December is currently the most expensive (average of $348). 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.

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 enero 14, 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
9,156 reviews

Entertainment

7.1

Crew

8.1

Overall

7.4

Comfort

7.3

Food

6.6

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
United Airlines
7.4
Good
9,156 reviews
United Airlines
7.4
Good
9,156 reviews

Entertainment

7.1

Crew

8.1

Overall

7.4

Comfort

7.3

Food

6.6

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.

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 $359, United Airlines can have you in Ontario from Rapid City in 6h 58m. 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 ($286), offers the cheapest pricing from Rapid City to Ontario. You may be able to fly from Rapid City to Ontario for 27% less than the average price by searching for this airline.

  • 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.

  • What is the cheapest month to book a flight from Rapid City to Ontario?

    Currently, June is the cheapest month in which you can book a flight from Rapid City to Ontario (average of $151). Flying from Rapid City to Ontario in December is currently the most expensive (average of $348). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Rapid City to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
Sioux Falls to Las Vegas flights
Sioux Falls to Los Angeles flights
Sioux Falls to San Diego flights
Sioux Falls to Palm Springs flights
Sioux Falls to Ontario flights
Rapid City to Las Vegas flights
Rapid City to Los Angeles flights
Rapid City to San Diego flights
Sioux Falls to Medford flights
Sioux Falls to Sacramento flights
Sioux Falls to San Francisco flights
Sioux Falls to Santa Ana flights
Sioux Falls to Reno flights
Rapid City to Palm Springs flights
Pierre to San Diego flights
Aberdeen to Las Vegas flights
Sioux Falls to San Jose flights
Sioux Falls to Fresno flights
Sioux Falls to Burbank flights
Sioux Falls to Oakland flights
Sioux Falls to Long Beach flights
Rapid City to San Francisco flights
Sioux Falls to Santa Barbara flights
Sioux Falls to Bakersfield flights
Rapid City to Santa Ana flights
Rapid City to San Jose flights
Sioux Falls to Monterey flights
Rapid City to Sacramento flights
Pierre to Santa Ana flights
Rapid City to Burbank flights
Rapid City to Long Beach flights
Rapid City to Yuma flights
Rapid City to Oakland flights

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 enero 14, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$286Average$398FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.