Cheap Flights from Rock Springs (RKS) to Washington (IAD)

Popular airlines from Rock Springs, WY (RKS-Sweetwater County) to Washington Dulles Intl. Airport (IAD)

Cheap Flights from Rock Springs to Washington (RKS-IAD)

Prices were available within the past 7 days and start at for one-way flights and $303 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

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Alternative airports near Washington

Prices were available within the past 7 days. Prices and availability are subject to change.

Flights from Rock Springs (RKS) to Washington (IAD)
Origin airport
Sweetwater County
Destination airport
Washington Dulles Intl.
Airlines serving
United
Roundtrip price
$303
Distance
1667 mi

Rock Springs to Washington Flights

The cheapest times to fly from Rock Springs to Washington

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Rock Springs to Washington are during the month of November. You can find some of the cheapest flights from Rock Springs to Washington with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Rock Springs to Washington

Sunday is one of the best days to book for cheap flights from Rock Springs to Washington: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Rock Springs to Washington

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Rock Springs to Washington in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Rock Springs to Washington flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Rock Springs to Washington airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Sweetwater County Airport (RKS) to Washington Dulles Intl. Airport (IAD) cost?
Snag a cheap one-way flight or cheap return flight from $303 from Sweetwater County Airport (RKS) to Washington Dulles Intl. Airport (IAD) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Sweetwater County Airport (RKS) to Washington Dulles Intl. Airport (IAD)?
Planning your getaway for November may help you find better deals, as it's the cheapest month for flights between RKS and IAD. You'll often find the lowest fares during off-peak months.
What is the cheapest airline that flies from Sweetwater County Airport (RKS) to Washington Dulles Intl. Airport (IAD)?
To find the cheapest airline that'll fly you from RKS to IAD, use Expedia's filter tool. Customize your search based on what matters most to you, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to see the cheapest flights first.
How many flights per day from Sweetwater County Airport (RKS) to Washington Dulles Intl. Airport (IAD)?
You'll need to hop on a flight with a layover when traveling from Sweetwater County Airport (RKS) to Washington Dulles Intl. Airport (IAD). There are no daily direct flights on this route. However, simply filter your search to include one or more stops to find the best option for your trip.
What day of the week has the most flights from RKS to IAD?
You'll usually find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Sweetwater County Airport (RKS) to Washington Dulles Intl. Airport (IAD)?
To avoid potential delays on the Sweetwater County Airport (RKS) to Washington Dulles Intl. Airport (IAD) route, aim to travel before 3 PM. Departures after this time have a 22% higher chance of cancellation.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Sweetwater County Airport (RKS) to Washington Dulles Intl. Airport (IAD) last-minute?
Booking your ticket from RKS to IAD just before your getaway is typically more expensive. But if you're flexible with your departure times and dates, you could grab a cheap last-minute fare.
Is it cheaper to book a RKS to IAD flight and hotel package?
Compared with arranging flights and hotels separately, booking a RKS to IAD flight and hotel package with Expedia could result in significant savings. What's more, having everything in one easy place will take the stress out of planning your trip. Simply pick your flights and select from our wide range of stays, then customize your trip with extras like tours and car rentals.
Can I cancel or change the date of my flight from Sweetwater County Airport (RKS) to Washington Dulles Intl. Airport (IAD)?
It's usually possible to reschedule or cancel your RKS to IAD flight. However, if it's been more than 24 hours since booking, additional charges may apply. Check your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find more details on our Customer Service portal.

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*Available to One Key members.