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Cheap flights from Rapid City to Los Angeles from $189

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Rapid City to Los Angeles departing on 10/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Rapid City to Los Angeles (RAP-ONT)

Cheap round-trip flights

Logo
5:39 pm - 7:17 amRAP-ONT
14h 38m1 stop
Logo
6:00 am - 4:49 pmONT-RAP
9h 49m1 stop
$252
Find Deal
Sun, Sep 21 - Sun, Sep 28
Logo
5:39 pm - 11:38 pmRAP-ONT
30h 59m2 stops
Logo
6:00 am - 4:49 pmONT-RAP
9h 49m1 stop
$332
Find Deal
Sun, Sep 21 - Sun, Sep 28
United Airlines Logo
7:05 am - 12:33 pmRAP-ONT
6h 28m1 stop
United Airlines Logo
1:00 pm - 6:53 pmONT-RAP
4h 53m1 stop
$339United Airlines
Find Deal
Sat, Feb 28 - Wed, Mar 4
United Airlines Logo
10:00 am - 5:37 pmRAP-ONT
8h 37m2 stops
United Airlines Logo
9:36 am - 10:12 pmONT-RAP
11h 36m2 stops
$340United Airlines
Find Deal
Tue, Sep 23 - Sat, Sep 27
American Airlines Logo
5:00 pm - 10:33 pmRAP-ONT
6h 33m1 stop
American Airlines Logo
10:35 pm - 11:22 amONT-RAP
11h 47m1 stop
$374American Airlines
Find Deal
Tue, Sep 23 - Sat, Sep 27
United Airlines Logo
3:20 pm - 8:24 pmRAP-ONT
6h 04m1 stop
United Airlines Logo
5:05 am - 12:37 pmONT-RAP
6h 32m1 stop
$398United Airlines
Find Deal
Sat, Oct 4 - Mon, Oct 13
United Airlines Logo
8:45 am - 12:33 pmRAP-ONT
4h 48m1 stop
United Airlines Logo
5:05 am - 11:05 amONT-RAP
5h 00m1 stop
$399United Airlines
Find Deal
Fri, Nov 7 - Sun, Nov 9
United Airlines Logo
7:05 am - 6:00 pmRAP-ONT
11h 55m2 stops
United Airlines Logo
1:00 pm - 8:33 pmONT-RAP
6h 33m1 stop
$403United Airlines
Find Deal
Sat, Feb 28 - Wed, Mar 4
American Airlines Logo
6:00 am - 4:05 pmRAP-ONT
11h 05m2 stops
American Airlines Logo
7:16 pm - 10:35 amONT-RAP
14h 19m2 stops
$844American Airlines
Find Deal
Sun, Sep 21 - Sun, Sep 28
Delta Logo
6:05 am - 4:09 pmRAP-ONT
11h 04m2 stops
Delta Logo
1:20 pm - 10:39 pmONT-RAP
8h 19m2 stops
$2,653Delta
Find Deal
Tue, Nov 25 - Sat, Nov 29

United Airlines flights from Rapid City to Ontario

Our best United Airlines deals on Rapid City to Ontario flight tickets
United Airlines
Feb 28
RAP7:05 amRapid City
6h 28m
1 stop
ONT12:33 pmOntario
Mar 4
ONT1:00 pmOntario
4h 53m
1 stop
RAP6:53 pmRapid City
$339
Find similar
United Airlines
Sep 23
RAP10:00 amRapid City
8h 37m
2 stops
ONT5:37 pmOntario
Sep 27
ONT9:36 amOntario
11h 36m
2 stops
RAP10:12 pmRapid City
$340
Find similar
United Airlines
Sep 19
RAP7:00 amRapid City
6h 32m
1 stop
ONT12:32 pmOntario
Sep 21
ONT5:10 amOntario
6h 28m
1 stop
RAP12:38 pmRapid City
$343
Find similar

American Airlines flights from Rapid City to Ontario

Our best American Airlines deals on Rapid City to Ontario flight tickets
American Airlines
Sep 23
RAP5:00 pmRapid City
6h 33m
1 stop
ONT10:33 pmOntario
Sep 27
ONT10:35 pmOntario
11h 47m
1 stop
RAP11:22 amRapid City
$374
Find similar
American Airlines
Sep 21
RAP6:00 amRapid City
11h 05m
2 stops
ONT4:05 pmOntario
Sep 28
ONT7:16 pmOntario
14h 19m
2 stops
RAP10:35 amRapid City
$844
Find similar
American Airlines
Oct 31
RAP5:42 amRapid City
14h 11m
1 stop
ONT6:53 pmOntario
Nov 1
ONT12:59 amOntario
20h 18m
1 stop
RAP10:17 pmRapid City
$872
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated September 10, 2025.
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

Rapid CityOntario

RAP - ONT

RAPONT

Rapid City

Sun 9/21

5:39 pm-7:17 am

1 stop14h 38m

Ontario

Sun 9/28

6:00 am-4:49 pm

1 stop9h 49m

$252

Rapid CityOntario

RAP - ONT

RAPONT

Rapid City

Sun 9/21

5:39 pm-11:38 pm

2 stops30h 59m

Ontario

Sun 9/28

6:00 am-4:49 pm

1 stop9h 49m

$332

Rapid CityOntario

RAP - ONT

RAPONT

Rapid City

Sat 2/28

7:05 am-12:33 pm

1 stop6h 28m

Ontario

Wed 3/4

1:00 pm-6:53 pm

1 stop4h 53m

$339

Rapid CityOntario

RAP - ONT

RAPONT

Rapid City

Tue 9/23

10:00 am-5:37 pm

2 stops8h 37m

Ontario

Sat 9/27

9:36 am-10:12 pm

2 stops11h 36m

$340

Rapid CityOntario

RAP - ONT

RAPONT

Rapid City

Tue 9/23

5:00 pm-10:33 pm

1 stop6h 33m

Ontario

Sat 9/27

10:35 pm-11:22 am

1 stop11h 47m

$374

Rapid CityOntario

RAP - ONT

RAPONT

Rapid City

Sat 10/4

3:20 pm-8:24 pm

1 stop6h 04m

Ontario

Mon 10/13

5:05 am-12:37 pm

1 stop6h 32m

$398

Rapid CityOntario

RAP - ONT

RAPONT

Rapid City

Fri 11/7

8:45 am-12:33 pm

1 stop4h 48m

Ontario

Sun 11/9

5:05 am-11:05 am

1 stop5h 00m

$399

Rapid CityOntario

RAP - ONT

RAPONT

Rapid City

Sat 2/28

7:05 am-6:00 pm

2 stops11h 55m

Ontario

Wed 3/4

1:00 pm-8:33 pm

1 stop6h 33m

$403

Rapid CityOntario

RAP - ONT

RAPONT

Rapid City

Sun 9/21

6:00 am-4:05 pm

2 stops11h 05m

Ontario

Sun 9/28

7:16 pm-10:35 am

2 stops14h 19m

$844

Rapid CityOntario

RAP - ONT

RAPONT

Rapid City

Tue 11/25

6:05 am-4:09 pm

2 stops11h 04m

Ontario

Sat 11/29

1:20 pm-10:39 pm

2 stops8h 19m

$2,653

Flights are sorted by cheapest round-trip flights first.

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How to get the cheapest flight ticket from Rapid City to Ontario

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Rapid City and Ontario?

What is the cheapest month to fly to Ontario?

In general, August is the cheapest month to fly from Rapid City to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $247. If you aren’t able to travel during the month of August, then book flights to Ontario from Rapid City during January instead. Flights to Ontario in January, while not as cheap as those in August, still average around $318.

What is the cheapest day to depart on your flight to Ontario?

The cheapest day to depart on your flight to Ontario is on a Friday when prices can be found for as low as $377. This is often the case because there is less demand to fly during this day of the week. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Rapid City to Ontario for around $498.

What is the cheapest time of day to depart on your flight to Ontario?

In the morning is the cheapest time of day to fly from Rapid City to Ontario when you can find flight prices for as low as $474. Flying to Ontario in the morning is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $492 on average. Flights to Ontario from Rapid City in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

When to book flights from Rapid City to Ontario

Are you open to changing your travel dates? Check out the ideal times to fly from Rapid City to Ontario according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Rapid City to Ontario (RAP to ONT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Rapid City to Ontario

Direct flights

None
There are no direct flights from Rapid City to Ontario. There are no popular flight routes from Rapid City to Ontario.
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  • How far is Rapid City to Ontario by plane?

    The straight-line distance from Rapid City to Ontario is 1034.4 mi. By plane, this route typically takes 4h 48m.

  • When did momondo last update prices for flights from Rapid City Airport to Ontario Airport?

    Prices for flights from Rapid City Airport to Ontario Airport are updated daily.

  • How many operators does momondo search for flights from Rapid City Airport to Ontario Airport?

  • How old do you have to be to fly from Rapid City Airport to Ontario Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Rapid City Airport to Ontario Airport.

  • What documentation or ID do you need to fly to Ontario Airport?

    The required travel and health documents for your Ontario Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ontario Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Rapid City to Ontario?

Best airlines flying from Rapid City to Ontario

Compare and see reviews for airlines that fly from Rapid City to Ontario with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $283Free CancellationRating
7.4
8,937 reviews
Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Rapid City to Ontario?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Rapid City to Ontario for you.

Can I find flights from Rapid City to Ontario with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Ontario from Rapid City with this policy.

How can momondo help me find flights from Rapid City to Ontario?

Once you have performed a search for Rapid City to Ontario flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Rapid City to Ontario right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Rapid City to Ontario flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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