Title: Cheap Flights from Washington (IAD) to Rapid City (RAP) - Expedia.ca ![](https://images.trvl-media.com/place/6059491/7f060111-0ecb-409d-8627-632d7acbfd12.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/6059491/7f060111-0ecb-409d-8627-632d7acbfd12.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # Cheap Flights from Washington (IAD) to Rapid City (RAP) - [Roundtrip](?flightType=roundtrip) - [One-way](?flightType=oneway) - [Multi-city](?flightType=multicity) ### Travellers Adults ChildrenAges 2 to 17 InfantsYounger than 2 EconomyPremium economyBusiness classFirst class Leaving from Going to Departing Returning Add a place to stay Add a car Direct flights only ## Popular airlines from Washington Dulles International Airport (IAD) to Rapid City Regional Airport (RAP) - ![United](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_UA.svg) United [](https://www.expedia.ca/Flights-Search?leg1=from:IAD,to:RAP,departure:30/01/2026TANYT&leg2=from:RAP,to:IAD,departure:06/02/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}]) - ![American Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AA.svg) American Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:IAD,to:RAP,departure:30/01/2026TANYT&leg2=from:RAP,to:IAD,departure:06/02/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}]) - ![Delta](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_DL.svg) Delta [](https://www.expedia.ca/Flights-Search?leg1=from:IAD,to:RAP,departure:30/01/2026TANYT&leg2=from:RAP,to:IAD,departure:06/02/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}]) - ![notification illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__notification.svg) ### Be in the know Get alerts if flight prices drop or rise\* - ![deals illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__deals.svg) ### Book smarter Save up to 30% on select hotels after you book a flight\* - ![trophy illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__trophy.svg) ### Earn twice Earn your airline miles on top of our rewards [Sign in](https://www.expedia.ca/login) ## Find the cheapest month to fly from Washington (IAD) to Rapid City (RAP) ### October is typically the cheapest month to fly From CA $369 - CA $845 per traveller. __Flight from Washington to Rapid City (IAD - RAP) route information__ | Origin airport | Washington Dulles Intl. | | ------------------- | ----------------------- | | Destination airport | Rapid City Regional | | Distance | 2183 km | ## Chantilly to Rapid City Flights **The easy way to book your flights from Washington to Rapid City** With Expedia, it’s simple to find and book flights to Rapid City from Washington whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from airlines that cover this route. There are nonstop flights to Rapid City Regional, too. Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Washington to Rapid City today, tomorrow, or this week. **Save dollars with cheap flights from Washington Dulles Intl., IAD to Rapid City Regional, RAP** Sort your search results by price to find great deals on your flight from Washington to Rapid City—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Rapid City from Washington currently is just rising to . Here are more money-saving tips: - Fly in when flight prices are normally at their lowest - Book about a month to 6 weeks before you travel for the best prices to Rapid City - Avoid peak season and weekends when flights can cost more - Early morning and late-night flights are sometimes cheaper, so try varying your travel times - One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! **Reasons to choose Expedia for your flight to Rapid City from Washington** Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to Rapid City with Expedia today. ## Frequently asked questions ### How much is a flight from IAD to Rapid City Regional Airport? ### Do I need to pay a cancellation fee if I cancel my flight from IAD to RAP? ### How do I find cheap flights from IAD to Rapid City Regional Airport (RAP) that have flexible change policies? ### How many hours is the flight from Dulles Intl. Airport to Rapid City Regional Airport (RAP)? ### How far is the flight from Washington Dulles Intl. Airport (IAD) to Rapid City Regional Airport (RAP)? ### Which airlines fly direct from IAD to RAP? ### Are IAD to Rapid City Regional Airport (RAP) flight tickets cheaper when they're purchased at the last minute? \*Available to Expedia members.