$151+ Cheap flights from Boston to Rapid City (BOS - 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 8/26. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — RAP
Sep 10 — Sep 171
Round-trip
1 adult, Economy
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Find cheap flights from Boston to Rapid City 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
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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 Boston to Rapid City
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Best
Last-minute
One-way
Cheapest flights from Boston to Rapid CityExplore the most affordable flight options available from Boston to Rapid City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 11, 2026.
Explore the most affordable flight options available from Boston to Rapid City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 11, 2026.
This Delta deal was found by Cheapflights users on 8/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/45:50 am -
1 stop6h 55m
Tue 11/106:40 am -
1 stop8h 06m
Deal found 8/10![Delta logo]()
$359
This United Airlines deal was found by Cheapflights users on 8/7. 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 11/129:12 am -
2 stops9h 57m
Sat 11/141:30 pm -
1 stop6h 00m
Deal found 8/7![United Airlines logo]()
$364
This United Airlines deal was found by Cheapflights users on 8/7. 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 9/211:55 am -
1 stop8h 03m
Wed 9/91:36 pm -
1 stop7h 54m
Deal found 8/7![United Airlines logo]()
$379
This United Airlines deal was found by Cheapflights users on 8/9. 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 9/17:45 am -
1 stop6h 39m
Wed 9/91:36 pm -
1 stop7h 54m
Deal found 8/9![United Airlines logo]()
$380
This American Airlines deal was found by Cheapflights users on 8/8. 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.
Fri 9/256:02 am -
1 stop8h 15m
Wed 9/3012:36 pm -
1 stop7h 51m
Deal found 8/8![American Airlines logo]()
$384
This Delta deal was found by Cheapflights users on 8/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/139:40 am -
2 stops14h 50m
Tue 10/272:37 pm -
1 stop5h 42m
Deal found 8/7![Delta logo]()
$385
This Delta deal was found by Cheapflights users on 8/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/115:50 am -
1 stop6h 55m
Wed 10/282:37 pm -
1 stop5h 42m
Deal found 8/7![Delta logo]()
$389
This United Airlines deal was found by Cheapflights users on 8/10. 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 8/286:01 am -
1 stop6h 25m
Tue 9/11:31 pm -
1 stop6h 28m
Deal found 8/10![United Airlines logo]()
$394
This Delta deal was found by Cheapflights users on 8/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/136:05 am -
2 stops18h 25m
Wed 10/286:39 am -
2 stops11h 53m
Deal found 8/7![Delta logo]()
$411
Best flights from Boston to Rapid CityDiscover carefully curated flight deals from Boston to Rapid City that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 11, 2026.
Discover carefully curated flight deals from Boston to Rapid City that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 11, 2026.
This Delta deal was found by Cheapflights users on 8/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/45:50 am -
1 stop6h 55m
Tue 11/106:40 am -
1 stop8h 06m
Deal found 8/11![Delta logo]()
$359
This United Airlines deal was found by Cheapflights users on 8/9. 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 9/115:08 pm -
1 stop7h 25m
Fri 9/181:36 pm -
1 stop7h 54m
Deal found 8/9![United Airlines logo]()
$422
This Delta deal was found by Cheapflights users on 8/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/56:18 pm -
1 stop6h 19m
Thu 9/102:31 pm -
1 stop7h 28m
Deal found 8/11![Delta logo]()
$458
This United Airlines deal was found by Cheapflights users on 8/11. 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.
Sat 9/510:38 am -
2 stops13h 50m
Fri 9/118:40 am -
2 stops13h 19m
Deal found 8/11![United Airlines logo]()
$469
This United Airlines deal was found by Cheapflights users on 8/8. 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 11/42:40 pm -
2 stops9h 50m
Tue 11/105:00 am -
2 stops8h 50m
Deal found 8/8![United Airlines logo]()
$469
Last-minute flights from Boston to Rapid CityDiscover last-minute flight deals from Boston to Rapid City. Data last updated August 11, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Rapid City. Data last updated August 11, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 8/7. 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.
Sat 8/226:14 am -
1 stop7h 01m
Mon 8/243:21 pm -
1 stop6h 38m
Deal found 8/7![American Airlines logo]()
$429
This United Airlines deal was found by Cheapflights users on 8/10. 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 8/286:01 am -
1 stop6h 25m
Tue 9/11:31 pm -
1 stop6h 28m
Deal found 8/10![United Airlines logo]()
$394
This United Airlines deal was found by Cheapflights users on 8/9. 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 9/17:45 am -
1 stop6h 39m
Wed 9/91:36 pm -
1 stop7h 54m
Deal found 8/9![United Airlines logo]()
$380
This United Airlines deal was found by Cheapflights users on 8/7. 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 9/211:55 am -
1 stop8h 03m
Wed 9/91:36 pm -
1 stop7h 54m
Deal found 8/7![United Airlines logo]()
$379
This United Airlines deal was found by Cheapflights users on 8/7. 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 9/211:00 am -
2 stops8h 58m
Fri 9/111:36 pm -
1 stop6h 23m
Deal found 8/7![United Airlines logo]()
$385
This United Airlines deal was found by Cheapflights users on 8/9. 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 9/115:08 pm -
1 stop7h 25m
Fri 9/181:36 pm -
1 stop7h 54m
Deal found 8/9![United Airlines logo]()
$422
This American Airlines deal was found by Cheapflights users on 8/8. 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.
Fri 9/256:02 am -
1 stop8h 15m
Wed 9/3012:36 pm -
1 stop7h 51m
Deal found 8/8![American Airlines logo]()
$384
This American Airlines deal was found by Cheapflights users on 8/8. 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.
Fri 9/256:02 am -
1 stop8h 15m
Tue 9/296:07 pm -
1 stop13h 32m
Deal found 8/8![American Airlines logo]()
$418
This United Airlines deal was found by Cheapflights users on 8/8. 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 9/266:00 am -
1 stop6h 15m
Wed 9/301:37 pm -
1 stop7h 47m
Deal found 8/8![United Airlines logo]()
$359
This American Airlines deal was found by Cheapflights users on 8/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/308:33 am -
1 stop11h 04m
Sun 10/46:07 pm -
1 stop14h 26m
Deal found 8/11![American Airlines logo]()
$424
One-way flights from Boston to Rapid CitySearch for one-way flight options from Boston to Rapid City. Find affordable one-way fares based on user searches. Data last updated August 11, 2026.
Search for one-way flight options from Boston to Rapid City. Find affordable one-way fares based on user searches. Data last updated August 11, 2026.
This Trip.com deal was found by Cheapflights users on 8/11. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2612:45 pm -
2 stops29h 10m
Deal found 8/11![Multiple Airlines logo]()
$151
This American Airlines deal was found by Cheapflights users on 8/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/308:33 am -
1 stop11h 04m
Deal found 8/11![American Airlines logo]()
$305
This United Airlines deal was found by Cheapflights users on 8/11. 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.
Wed 9/2310:38 am -
2 stops24h 50m
Deal found 8/11![United Airlines logo]()
$330
This American Airlines deal was found by Cheapflights users on 8/7. 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 9/137:00 am -
1 stop12h 37m
Deal found 8/7![American Airlines logo]()
$336
This Kiwi.com deal was found by Cheapflights users on 8/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/1311:53 am -
3 stops34h 26m
Deal found 8/7![Multiple Airlines logo]()
$340
This United Airlines deal was found by Cheapflights users on 8/11. 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.
Mon 9/146:00 am -
1 stop6h 25m
Deal found 8/11![United Airlines logo]()
$379
This American Airlines deal was found by Cheapflights users on 8/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/266:14 am -
1 stop7h 01m
Deal found 8/11![American Airlines logo]()
$401
This United Airlines deal was found by Cheapflights users on 8/9. 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.
Sun 9/137:05 am -
2 stops12h 01m
Deal found 8/9![United Airlines logo]()
$418
Find flight deals from Boston to Rapid City
Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) 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 August 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $359 (Delta) |
One-way from | $151 (Trip.com) |
Popular in | March |
Cheapest in | April |
Average price | $519 |
Cheapflights Fare Finder
Customize your flight search to find flights from Boston 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 August 11, 2026.
Use the filters below to find and compare flights from Boston to Rapid City that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BostonRapid City
BOS Boston Logan Intl - RAP Rapid City
BOSRAP
Boston Logan Intl
Wed 11/4
5:50 am-10:45 am
1 stop6h 55m
Rapid City
Tue 11/10
6:40 am-4:46 pm
1 stop8h 06m
$359
BostonRapid City
BOS Boston Logan Intl - RAP Rapid City
BOSRAP
Boston Logan Intl
Fri 9/11
5:08 pm-10:33 pm
1 stop7h 25m
Rapid City
Fri 9/18
1:36 pm-11:30 pm
1 stop7h 54m
$422
Quickest round-trip
BostonRapid City
BOS Boston Logan Intl - RAP Rapid City
BOSRAP
Boston Logan Intl
Sat 9/5
6:18 pm-10:37 pm
1 stop6h 19m
Rapid City
Thu 9/10
2:31 pm-11:59 pm
1 stop7h 28m
$458
BostonRapid City
BOS Boston Logan Intl - RAP Rapid City
BOSRAP
Boston Logan Intl
Sat 9/5
10:38 am-10:28 pm
2 stops13h 50m
Rapid City
Fri 9/11
8:40 am-11:59 pm
2 stops13h 19m
$469
BostonRapid City
BOS Boston Logan Intl - RAP Rapid City
BOSRAP
Boston Logan Intl
Wed 11/4
2:40 pm-10:30 pm
2 stops9h 50m
Rapid City
Tue 11/10
5:00 am-3:50 pm
2 stops8h 50m
$469
Cheapest one-way
BostonRapid City
BOS Boston Logan Intl - RAP Rapid City
BOSRAP
Boston Logan Intl
Wed 9/23
10:38 am-9:28 am
2 stops24h 50m
$330
BostonRapid City
BOS Boston Logan Intl - RAP Rapid City
BOSRAP
Boston Logan Intl
Sun 9/13
11:53 am-8:19 pm
3 stops34h 26m
$340
BostonRapid City
BOS Boston Logan Intl - RAP Rapid City
BOSRAP
Boston Logan Intl
Sat 10/10
5:17 am-12:21 pm
1 stop9h 04m
$379
Quickest one-way
BostonRapid City
BOS Boston Logan Intl - RAP Rapid City
BOSRAP
Boston Logan Intl
Sun 9/13
6:00 am-10:25 am
1 stop6h 25m
$379
Sorted by cheapest first
Compare providers for flights from Boston 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 Boston to Rapid City in August.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on Boston-Rapid City flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boston-Rapid City flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boston-Rapid City flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Boston-Rapid City 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 Boston-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 Boston to Rapid City
Have a flexible travel schedule? Discover the best time to fly to Rapid City from Boston with our price prediction graph.
BOS-RAP
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 Boston to Rapid City
How far ahead should I book a flight from Boston to Rapid City?
The best time to book flights from Boston to Rapid City is 89 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Boston to Rapid City?
Currently, April is the cheapest month in which you can book a flight from Boston to Rapid City (average of $403). Flying from Boston to Rapid City in March is currently the most expensive (average of $634). 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.
How much does it cost to fly round-trip from Boston to Rapid City?
Airfare is below average for this route at the moment.
Boston to Rapid City flights typically cost between $448 and $701 in November.The cheapest round-trip price found within the last 5 days was $359 on Delta (Nov 4-Nov 10).
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 August 11, 2026.
Peruse reviews from past customers who have flown with Delta,United Airlines, andAmerican Airlines from Boston to Rapid City to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.2
Crew
8.5
Overall
7.8
Comfort
7.8
Boarding
8.1
Entertainment
7.8
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Food
7.2
Crew
8.5
Overall
7.8
Comfort
7.8
Boarding
8.1
Entertainment
7.8
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Food
7.2
Crew
8.5
Overall
7.8
Comfort
7.8
Boarding
8.1
Entertainment
7.8
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Food
7.2
Crew
8.5
Overall
7.8
Comfort
7.8
Boarding
8.1
Entertainment
7.8
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Related info for your journey
Find useful and relevant information for your journey from Boston to Rapid City. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Rapid City?
Book flights to Rapid City if you plan to visit one of these locationsKeystone
Deadwood
Spearfish
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Alternative routes for Boston to Rapid City
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Complete your trip
Complete your trip to Rapid City by adding a car rental and/or hotel reservation to your travel itinerary.
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Find flights from Boston to Rapid City, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Boston and Rapid City flights
Browse other Boston and Rapid City flight options. Last updated on August 11, 2026.
Other flights from Boston
Browse through other flights departing from Boston. Flights are based on user searches made on Cheapflights and were last updated on August 11, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to Rapid City
Explore flights to Rapid City departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on August 11, 2026.
Top 3 airlines flying from Boston to Rapid City
Discover the top 3 airlines that operate flights from Boston 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 August 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$328 | Average$530 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$368 | Average$595 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$391 | Average$548 | FlexibilityNo cancel fee | On-time69% |