SEA - RAP

$240 Find Cheap Flights from Seattle to Rapid City - Compare and Save

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Rapid City departing on 9/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$240
Typical prices: $430-$643
Multiple Airlines
Wed 9/9Sun 9/13
SEA - RAP • 1 stop
Cheapest one-way
$243
Typical prices: $265-$285
United Airlines
Tue 9/1
SEA - RAP • 1 stop
Top airlines
Cheapest • from $329 (round-trip)
Best reviews • 7.8 score
Airline reviews
Airline reviews
+1
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Airline reviews
Airline reviews
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Nonstop flights
Not available
There are currently no direct flights between Seattle and Rapid City. You'll need at least 1 connection.
Insights
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Top layover airports
Cheapest • Avg $469 (round-trip)
Shortest trip • 5h 46m (one-way)
Insights
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When to book
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 21% compared to booking last minute.
Insights
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Insights
When to travel
Cheapest • 33% price drop
Most popular
Good to know
Good to know
+1
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Seattle to Rapid City (SEA-RAP)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Rapid City that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Seattle to Rapid City

Wed, Sep 9 - Sun, Sep 13
Multiple Airlines Logo
9:45 pm - 11:46 am
SEA
-
RAP
13h 01m
1 stop
Multiple Airlines Logo
3:34 pm - 9:42 am
RAP
-
SEA
19h 08m
1 stop
$240Multiple Airlines
Wed, Sep 9 - Sun, Sep 13
Multiple Airlines Logo
9:45 pm - 11:46 am
SEA
-
RAP
13h 01m
1 stop
Multiple Airlines Logo
3:34 pm - 9:42 am
RAP
-
SEA
19h 08m
1 stop
$241Multiple Airlines
Wed, Sep 9 - Sun, Sep 13
Multiple Airlines Logo
9:45 pm - 11:46 am
SEA
-
RAP
13h 01m
1 stop
Multiple Airlines Logo
3:34 pm - 9:42 am
RAP
-
SEA
19h 08m
1 stop
$242Multiple Airlines
Wed, Sep 2 - Thu, Sep 10
Multiple Airlines Logo
8:48 pm - 11:46 am
SEA
-
RAP
13h 58m
1 stop
Multiple Airlines Logo
12:36 pm - 9:42 am
RAP
-
SEA
22h 06m
1 stop
$245Multiple Airlines
Tue, Aug 25 - Mon, Aug 31
United Airlines Logo
5:00 am - 12:24 pm
SEA
-
RAP
6h 24m
1 stop
United Airlines Logo
8:55 am - 1:22 pm
RAP
-
SEA
5h 27m
1 stop
$329United Airlines
Wed, Sep 9 - Tue, Sep 15
United Airlines Logo
5:00 am - 12:24 pm
SEA
-
RAP
6h 24m
1 stop
United Airlines Logo
7:00 am - 11:57 am
RAP
-
SEA
5h 57m
1 stop
$329United Airlines
Mon, Sep 21 - Wed, Sep 30
Delta Logo
6:00 am - 1:50 pm
SEA
-
RAP
6h 50m
1 stop
Delta Logo
4:31 pm - 11:55 pm
RAP
-
SEA
8h 24m
1 stop
$329Delta
Wed, Sep 9 - Tue, Sep 15
United Airlines Logo
5:00 am - 12:24 pm
SEA
-
RAP
6h 24m
1 stop
United Airlines Logo
8:40 am - 4:14 pm
RAP
-
SEA
8h 34m
2 stops
$334United Airlines
Thu, Sep 3 - Wed, Sep 9
Delta Logo
11:59 pm - 10:02 am
SEA
-
RAP
9h 03m
1 stop
Delta Logo
4:31 pm - 11:55 pm
RAP
-
SEA
8h 24m
1 stop
$349Delta
Thu, Sep 3 - Fri, Sep 11
Delta Logo
11:59 pm - 10:02 am
SEA
-
RAP
9h 03m
1 stop
Delta Logo
4:31 pm - 11:55 pm
RAP
-
SEA
8h 24m
1 stop
$349Delta
Booking Insights

KAYAK's insights & trends for Seattle to Rapid City flights

Get data-powered insights and trends into flights from Seattle to Rapid City to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Seattle to Rapid City?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Seattle to Rapid City departing in September.

Flight prices are below average for this route right now.

Flights to Rapid City from Seattle usually cost between $421 and $640 in September.
The lowest price found in the past 5 days was $240 on Multiple Airlines (Sep 9-Sep 13).

What is the cheapest month to fly from Seattle to Rapid City?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to Rapid City, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Seattle to Rapid City is January, where tickets cost $349 (return) on average. On the other hand, the most expensive months are April and December, where the average cost of round-trip tickets is $726 and $689 respectively.

How far in advance should I book a flight from Seattle to Rapid City?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Seattle to Rapid City, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Seattle to Rapid City, you should book around 4 weeks before departure, which saves you about 21% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 23 weeks before departure.

Good to know

Low season

April

Cheapest flight

$240
Best time to beat the crowds but there is an average 38% increase in price.
Most popular time to fly with an average 10% increase in price.
Flight from Seattle to Rapid City

When to book flights from Seattle to Rapid City

Are your dates flexible? Find out the best times to travel from Seattle to Rapid City based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Seattle to Rapid City

  • What is the cheapest flight from Seattle to Rapid City?

    In the last 5 days, the lowest price for a flight from Seattle to Rapid City was $243 for a one-way ticket and $240 for a round-trip.

  • Do I need a passport to fly between Seattle and Rapid City?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airports will I be using when flying from Seattle to Rapid City?

    When flying out of Seattle you will be using Seattle/Tacoma Intl. You will be landing at Rapid City, also known as Rapid City.

  • Which aircraft models fly most regularly from Seattle to Rapid City?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Seattle to Rapid City?

    SkyTeam, and Star Alliance are the airline alliances operating flights between Seattle and Rapid City, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Seattle to Rapid City, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Seattle to Rapid City are Delta and United Airlines. With an average price for the route of $462 and an overall rating of 7.8, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $558 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Seattle to Rapid City?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seattle to Rapid City.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to Rapid City?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Rapid City from Seattle is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Seattle to Rapid City?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Rapid City with an airline and back to Seattle with another airline. Booking your flights between Seattle and RAP can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to Rapid City?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Rapid City from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Seattle to Rapid City

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Rapid City. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Seattle to Rapid City? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.8
DeltaOverall score based on 8492 reviews
8.1Boarding
7.2Food
7.8Comfort
7.8Entertainment
8.5Crew
Airline reviews

Comfortable seats. Nice service online. Short flight, so not a lot of time to enjoy.

8.0 ExcellentMichael, Jul 2026
SEA - SMF
Read more Delta reviews

Comfortable seats. Nice service online. Short flight, so not a lot of time to enjoy.

The flight was done by SkyWest only WIFI no entertainment center are available on the CRJ

My flight was delayed by 4 hours in 30 minute increments. The gate agents were amazing but the communication was not. We were told that there was a maintenance issue but they didn't know what it was. That didn't inspire confidence. Then they said they found it and it was fixed and the pilot just needed to sign off. Then the pilot needed to talk to the other pilot from the arriving flight and we'd be fine. Then we were waiting for the pilot to call back. Then the maintenance issue wasn't fixed. Then they decided we were getting a new plane (why didn't they decide this earlier??). Fine. But then they announced we were changing gates AND terminals. And we were boarding in 20 minutes. So we all had to run to the new terminal gate. We could have taken off at that time, but we then had to wait for all the people who rebooked on a different flight to book this flight again. That took 30+ minutes because there was only one gate agent. When everyone ditched this flight, I saw it as an opportunity to upgrade to comfort. Delta, the greedy jerks they are, charged me $121. After their delay, their fault, their issues, couldn't even discount an upgrade. They only handed out $12 meal vouchers for the delay. I can't even get a snack from starbucks for that.

Love me some Delta. One of the few airlines to recognize and support veterans. Easy boarding, flight was on time and arrived early and the flight attendants were excellent on this flight.

We sat on the runway for over an hour before departure. That was unwelcome.

Crew was nice, meal was good. Entertainment had to be rebooted 3 times and still did not work. Turns out there was residue on screen, it needed to be cleaned to prevent the touchscreen buttons from continuously activating. I had entertainment for the last 45 minutes of a 5 hour 45 minute flight. Really unacceptable for first class. Flight attendent indicated your cleaning solution creates this problem. Seems as if this is widely known, you should be using a different product or cleaning better. Really really disappointing which simply added to the wi fi on your planes with reliably never ever works.

Snacks and included beverages were appreciated. Boarding went smoothly. Plenty of overhead bin space. Seats get very uncomfortable after a couple of hours. After waiting 10 painful minutes for my walker, a very nice Delta guest agent pushed me in a wheelchair to the gate. It was finally delivered to me after another 15 minutes . Our checked bag was on the carousel long b4 I was able to retrieve it. Fortunately it was still there but somewhere along the way the straps we used to secure it were removed and and were not reattached. Wish I had made note of the agents name.

The cabin temperature was nice and cool. The wifi was not working.

Could not get my connecting flight boarding pass until four hrs before departure! Ver annoying especially since the staff could not explain why!

First flight out and was 85 minutes delayed. Notification came out way too late

Flight be on time would be a good start. Then train your flight attendants to be attentive and friendly. This time they completely forgot my row for the measly snack! United, do better!

Our flight was delayed several Times due to mechanical issues. Although I understand this may happen at times, it was very inconvenient and we had to book a hotel for an overnight stay. We were traveling with my 3-yo grandson and waiting at the airport from noon until 6:30pm with no reassurance that our next rescheduled flight would depart, we had to decide what’s best for him. A day later, I found out that I may be able to demand compensation if my flight is delayed more than 4 hours. I will hav to read the fine print next time.

United needs to step up their game. Delayed flight leaving Seattle, San Francisco. Older aircraft, not very comfortable.

Had to cancel first flight because Airporter Bus took over 3 hrs to get to airport which resulted in an extra $378 dollar fare . Is there anyway I can be reimbursed for initial fare since it was not my fault? Sent from my iPhone EJ Ledet

Delayed by 2.5hrs any longer and they would’ve had to honour their own policy for breaking their own rules and regs. Not cool, especially when I have an infant child that needs to stay on a routine and they get schedules.

They had three choices for snacks - but you could only have one - and they ran out of the dark chocolate before they made it all the way down the aisle... Packed flight - limited service.

They opened my checked bag and even though my lock was tsa approved, they loose my lock and left my bag just like that. Incompetent people, very upset about it. I’ll try to avoid traveling with united

We fly to Ecuador frequently. Checking in is usually a hassle because most United agents take some time before they can verify that my passport doesn't require a visa to Ecuador. This time the process was even longer due to the cyber attack. But she was really nice to us. So glad we brought plenty of snacks to supplement the 3 flights from SEA to GYE.

We had selected seats in the app that were a 2x2 format in the middle of the plane. Our seats when we got on the plane had been moved to the back rows in a 3x1 format. What’s the point of paying up for tickets that allow seat selection if the airline will just change them?

The new Airbus A231neo has neat tech but the economy seats are so tight together that I always had my shoulders against one passenger or the other. I was very miffed that Basic Economy REQUIRES check-in of bags other than your personal carry-on; if you want to offer low-cost airline prices and then add services for a fee, just let me carry on my duffel. Hell, I could have put my carry on IN the duffel and called it a day but the gate agent would not let me; I ended up paying $40 for the risk of losing my bag. Not the worst flight, but far from the best.

Everything you need to know for your flight from Seattle to Rapid City

Information on your arrival and departure airports