$299+ Cheap flights from Rapid City to Boston (RAP - BOS)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/18. Fares are subject to change and may not be available on all flights or dates of travel.
RAP — BOS
Oct 26 — Nov 21
Round-trip
1 adult, Economy
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Find cheap flights from Rapid City to Boston 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 Boston
Cheapest
Best
Last-minute
One-way
Cheapest flights from Rapid City to BostonExplore the most affordable flight options available from Rapid City to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 26, 2026.
Explore the most affordable flight options available from Rapid City to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 26, 2026.
This United Airlines deal was found by Cheapflights users on 9/25. 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 10/241:37 pm -
1 stop6h 22m
Fri 10/304:45 pm -
1 stop7h 45m
Deal found 9/25![United Airlines logo]()
$379
This Delta deal was found by Cheapflights users on 9/22. 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 10/244:38 pm -
2 stops13h 02m
Thu 10/2912:05 pm -
1 stop5h 53m
Deal found 9/22![Delta logo]()
$388
This United Airlines deal was found by Cheapflights users on 9/22. 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 10/171:37 pm -
1 stop6h 22m
Thu 10/226:00 am -
1 stop6h 15m
Deal found 9/22![United Airlines logo]()
$394
This United Airlines deal was found by Cheapflights users on 9/22. 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 10/175:00 am -
2 stops10h 37m
Wed 10/216:00 am -
1 stop6h 15m
Deal found 9/22![United Airlines logo]()
$399
This United Airlines deal was found by Cheapflights users on 9/23. 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 11/145:00 am -
2 stops8h 50m
Wed 12/24:45 pm -
1 stop6h 57m
Deal found 9/23![United Airlines logo]()
$402
This Delta deal was found by Cheapflights users on 9/22. 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.
Fri 10/164:38 pm -
1 stop5h 42m
Fri 10/237:27 am -
1 stop8h 30m
Deal found 9/22![Delta logo]()
$409
This United Airlines deal was found by Cheapflights users on 9/22. 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 10/221:37 pm -
1 stop7h 47m
Wed 10/283:05 pm -
1 stop7h 38m
Deal found 9/22![United Airlines logo]()
$410
This Delta deal was found by Cheapflights users on 9/22. 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 11/152:23 pm -
2 stops16h 14m
Wed 12/27:25 am -
1 stop8h 35m
Deal found 9/22![Delta logo]()
$417
Best flights from Rapid City to BostonDiscover carefully curated flight deals from Rapid City to Boston that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 26, 2026.
Discover carefully curated flight deals from Rapid City to Boston that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 26, 2026.
This United Airlines deal was found by Cheapflights users on 9/24. 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 10/2411:17 am -
1 stop6h 43m
Fri 10/307:15 am -
1 stop10h 04m
Deal found 9/24![United Airlines logo]()
$379
This Delta deal was found by Cheapflights users on 9/24. 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 10/244:38 pm -
1 stop5h 42m
Thu 10/297:27 am -
1 stop8h 30m
Deal found 9/24![Delta logo]()
$379
This United Airlines deal was found by Cheapflights users on 9/24. 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 11/145:00 am -
2 stops8h 50m
Wed 12/24:45 pm -
1 stop6h 57m
Deal found 9/24![United Airlines logo]()
$384
This United Airlines deal was found by Cheapflights users on 9/25. 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 11/211:30 pm -
1 stop6h 00m
Wed 12/22:58 pm -
1 stop8h 44m
Deal found 9/25![United Airlines logo]()
$453
Last-minute flights from Rapid City to BostonDiscover last-minute flight deals from Rapid City to Boston. Data last updated September 26, 2026 and is based on user searches.
Discover last-minute flight deals from Rapid City to Boston. Data last updated September 26, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 9/22. 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.
Fri 10/164:38 pm -
1 stop5h 42m
Fri 10/237:27 am -
1 stop8h 30m
Deal found 9/22![Delta logo]()
$409
This United Airlines deal was found by Cheapflights users on 9/22. 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 10/171:37 pm -
1 stop6h 22m
Thu 10/226:00 am -
1 stop6h 15m
Deal found 9/22![United Airlines logo]()
$394
This United Airlines deal was found by Cheapflights users on 9/22. 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 10/175:00 am -
2 stops10h 37m
Wed 10/216:00 am -
1 stop6h 15m
Deal found 9/22![United Airlines logo]()
$399
This United Airlines deal was found by Cheapflights users on 9/22. 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 10/221:37 pm -
1 stop7h 47m
Wed 10/283:05 pm -
1 stop7h 38m
Deal found 9/22![United Airlines logo]()
$410
This Delta deal was found by Cheapflights users on 9/23. 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 10/244:38 pm -
1 stop5h 42m
Thu 10/297:27 am -
1 stop8h 30m
Deal found 9/23![Delta logo]()
$379
This United Airlines deal was found by Cheapflights users on 9/23. 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 10/245:00 am -
2 stops9h 21m
Fri 10/3011:34 am -
1 stop7h 35m
Deal found 9/23![United Airlines logo]()
$384
One-way flights from Rapid City to BostonSearch for one-way flight options from Rapid City to Boston. Find affordable one-way fares based on user searches. Data last updated September 26, 2026.
Search for one-way flight options from Rapid City to Boston. Find affordable one-way fares based on user searches. Data last updated September 26, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/23. 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 10/185:35 pm -
3 stops40h 17m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/23![Multiple Airlines logo]()
$299
This United Airlines deal was found by Cheapflights users on 9/24. 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 11/1412:39 pm -
1 stop9h 11m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/24![United Airlines logo]()
$379
This United Airlines deal was found by Cheapflights users on 9/22. 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 10/161:37 pm -
1 stop7h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/22![United Airlines logo]()
$389
This Delta deal was found by Cheapflights users on 9/24. 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 9/292:30 pm -
1 stop5h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/24![Delta logo]()
$411
This United Airlines deal was found by Cheapflights users on 9/25. 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 10/1311:17 am -
2 stops11h 37m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/25![United Airlines logo]()
$416
Find flight deals from Rapid City to Boston
Discover tips and strategies to find the most affordable flight options for your journey from Rapid City (RAP) to Boston (BOS). 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 September 26, 2026.
Most accurate provider | Expedia 1 star |
|---|---|
Most trusted provider | Expedia 3 stars |
Round-trip from | $379 (United Airlines) |
One-way from | $299 (Kiwi.com) |
Popular in | December |
Cheapest in | February |
Average price | $598 |
Cheapflights Fare Finder
Customize your flight search to find flights from Rapid City to Boston 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 7,457,451 searches. Data last updated September 26, 2026.
Use the filters below to find and compare flights from Rapid City to Boston that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Rapid CityBoston
RAP Rapid City - BOS Boston Logan Intl
RAPBOS
Rapid City
Sat 10/24
11:17 am-8:00 pm
1 stop6h 43m
Boston Logan Intl
Fri 10/30
7:15 am-3:19 pm
1 stop10h 04m
$379
Rapid CityBoston
RAP Rapid City - BOS Boston Logan Intl
RAPBOS
Rapid City
Sat 10/24
4:38 pm-12:20 am
1 stop5h 42m
Boston Logan Intl
Thu 10/29
7:27 am-1:57 pm
1 stop8h 30m
$379
Rapid CityBoston
RAP Rapid City - BOS Boston Logan Intl
RAPBOS
Rapid City
Sat 11/14
7:00 am-6:53 pm
2 stops9h 53m
Boston Logan Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$384
Rapid CityBoston
RAP Rapid City - BOS Boston Logan Intl
RAPBOS
Rapid City
Sat 11/14
5:00 am-3:50 pm
2 stops8h 50m
Boston Logan Intl
Wed 12/2
4:45 pm-9:42 pm
1 stop6h 57m
$384
Quickest round-trip
Rapid CityBoston
RAP Rapid City - BOS Boston Logan Intl
RAPBOS
Rapid City
Fri 10/16
1:37 pm-11:24 pm
1 stop7h 47m
Boston Logan Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$389
Rapid CityBoston
RAP Rapid City - BOS Boston Logan Intl
RAPBOS
Rapid City
Tue 10/13
1:37 pm-11:24 pm
1 stop7h 47m
Boston Logan Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$411
Rapid CityBoston
RAP Rapid City - BOS Boston Logan Intl
RAPBOS
Rapid City
Sat 11/21
1:30 pm-9:30 pm
1 stop6h 00m
Boston Logan Intl
Wed 12/2
2:58 pm-9:42 pm
1 stop8h 44m
$453
Sorted by cheapest first
- Most accurate provider: When it comes to deals on Rapid City-Boston flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on Rapid City-Boston flight deals on Cheapflights vs. Expedia <90% of the time. Price accuracy is based on data collected from Rapid City-Boston flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Rapid City-Boston flights, Cheapflights users trust Expedia the most. Expedia 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-Boston 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 Boston
Have a flexible travel schedule? Discover the best time to fly to Boston from Rapid City with our price prediction graph.
RAP-BOS
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 Boston
Reviews of airlines servicing Boston
Get insights into the airlines that provide service to Boston. 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 Boston. Reviews last updated September 26, 2026.
Get a feel of what it's like to fly with Delta,United Airlines, andAmerican Airlines from Rapid City to Boston by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.5
Food
7.2
Boarding
8.1
Comfort
7.8
Overall
7.8
Entertainment
7.8
Reviews
1 / 20
6.0
GoodColin,Sep 2024
LHR - BOS
Crew
8.5
Food
7.2
Boarding
8.1
Comfort
7.8
Overall
7.8
Entertainment
7.8
Reviews
1 / 20
6.0
GoodColin,Sep 2024
LHR - BOS
Crew
8.5
Food
7.2
Boarding
8.1
Comfort
7.8
Overall
7.8
Entertainment
7.8
Reviews
1 / 20
6.0
GoodColin,Sep 2024
LHR - BOS
Crew
8.5
Food
7.2
Boarding
8.1
Comfort
7.8
Overall
7.8
Entertainment
7.8
Reviews
1 / 20
6.0
GoodColin,Sep 2024
LHR - BOS
Related info for your journey
Find useful and relevant information for your journey from Rapid City to Boston. 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 Boston?
Book flights to Boston if you plan to visit one of these locationsWaltham
Randolph
Concord
Cambridge
Brockton
Dedham
Cranston
Revere
Warwick
Pawtucket
Peabody
Auburn
Londonderry
York Beach
Fitchburg
North Falmouth
Swansea
Chelsea
Braintree
Sandwich
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.
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Alternative routes for Rapid City to Boston
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Other flights to Boston
Explore flights to Boston departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 26, 2026.
Complete your trip
Complete your trip to Boston by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Rapid City to Boston by cabin class
Find flights from Rapid City to Boston, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Rapid City and Boston flights
Browse other Rapid City and Boston flight options. Last updated on September 26, 2026.
Other flights from Rapid City
Browse through other flights departing from Rapid City. Flights are based on user searches made on Cheapflights and were last updated on September 26, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 3 airlines flying from Rapid City to Boston
Discover the top 3 airlines that operate flights from Rapid City to Boston. 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 7,457,451 searches. Data last updated September 26, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$288 | Average$574 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$308 | Average$462 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$348 | Average$476 | FlexibilityNo cancel fee | On-time69% |