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$215 Cheap Flights from Washington (DCA) to Sun Valley (SUN)

View $215 flight on Sat, Jan 23, 2027Opens in a new window

Popular airlines from Ronald Reagan Washington National Airport (DCA) to Sun Valley, ID (SUN-Friedman Memorial)

Cheap Flights from Washington to Sun Valley (DCA-SUN)

Prices were available within the past 7 days and start at $215 for one-way flights and $449 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sat, Jan 23 - Sat, Jan 30
DCA
Washington
SUN
Sun Valley
$449 Roundtrip, found 5 days ago
$449
Roundtrip
found 5 days ago
Select American Airlines flight, departing Sat, Jan 23 from Washington to Sun Valley, returning Sat, Jan 30, priced at $449 found 5 days ago
Delta
Sat, Jan 23 - Sat, Jan 30
DCA
Washington
SUN
Sun Valley
$449 Roundtrip, found 5 days ago
$449
Roundtrip
found 5 days ago
Select Delta flight, departing Sat, Jan 23 from Washington to Sun Valley, returning Sat, Jan 30, priced at $449 found 5 days ago
United
Fri, Aug 28 - Mon, Aug 31
DCA
Washington
SUN
Sun Valley
$449 Roundtrip, found 6 days ago
$449
Roundtrip
found 6 days ago
Select United flight, departing Fri, Aug 28 from Washington to Sun Valley, returning Mon, Aug 31, priced at $449 found 6 days ago
Delta
Sat, Nov 7 - Sat, Nov 14
DCA
Washington
SUN
Sun Valley
$454 Roundtrip, found 5 days ago
$454
Roundtrip
found 5 days ago
Select Delta flight, departing Sat, Nov 7 from Washington to Sun Valley, returning Sat, Nov 14, priced at $454 found 5 days ago
Delta
Sun, Aug 30 - Tue, Sep 1
DCA
Washington
SUN
Sun Valley
$460 Roundtrip, found 6 days ago
$460
Roundtrip
found 6 days ago
Select Delta flight, departing Sun, Aug 30 from Washington to Sun Valley, returning Tue, Sep 1, priced at $460 found 6 days ago
American Airlines
Sat, Jan 23 - Sat, Jan 30
DCA
Washington
SUN
Sun Valley
$474 Roundtrip, found 5 days ago
$474
Roundtrip
found 5 days ago
Select American Airlines flight, departing Sat, Jan 23 from Washington to Sun Valley, returning Sat, Jan 30, priced at $474 found 5 days ago
United
Fri, Aug 28 - Mon, Aug 31
DCA
Washington
SUN
Sun Valley
$475 Roundtrip, found 6 days ago
$475
Roundtrip
found 6 days ago
Select United flight, departing Fri, Aug 28 from Washington to Sun Valley, returning Mon, Aug 31, priced at $475 found 6 days ago
Delta
Wed, Nov 4 - Sat, Nov 14
DCA
Washington
SUN
Sun Valley
$479 Roundtrip, found 6 days ago
$479
Roundtrip
found 6 days ago
Select Delta flight, departing Wed, Nov 4 from Washington to Sun Valley, returning Sat, Nov 14, priced at $479 found 6 days ago
United
Sat, Jan 23 - Sat, Jan 30
DCA
Washington
SUN
Sun Valley
$481 Roundtrip, found 5 days ago
$481
Roundtrip
found 5 days ago
Select United flight, departing Sat, Jan 23 from Washington to Sun Valley, returning Sat, Jan 30, priced at $481 found 5 days ago
Alaska Airlines
Sat, Sep 5 - Tue, Sep 8
DCA
Washington
SUN
Sun Valley
$495 Roundtrip, found 2 days ago
$495
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Sat, Sep 5 from Washington to Sun Valley, returning Tue, Sep 8, priced at $495 found 2 days ago

Alternative airports near Sun Valley

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

Select flight to Friedman Memorial SUN. Cheapest and Closest option available. Average driving time to city center is 23 minutes. Flights from $619
SUN
Friedman Memorial
CheapestClosest
Average driving time to city center23 min
Flights from $619

What you need to know for your flight from Ronald Reagan Washington National to Friedman Memorial

Washington (DCA) to Sun Valley (SUN) at a glance

Explore the range of airlines operating flights from Washington (DCA) to Sun Valley (SUN) on this domestic short-haul route. Whether you prefer a full-service carrier or a budget-friendly option, you can compare itineraries to find the best fit for your budget, schedule, and travel plans as you discover the iconic sights and neighborhoods of Sun Valley. Check out the essential details for flights from Ronald Reagan Washington National Airport (DCA) to Friedman Memorial Airport (SUN).

  • Fastest flight duration: around 6h 15m in-flight, plus roughly 55 minutes layover with one stop
  • Route distance: roughly 2,000 miles (3,220 km)
  • Flights per week: around 8 departures on average
  • Typical fares (one-way): economy tickets often range from $145–$780, depending on seasonality and how far ahead you book

Flights from Ronald Reagan Washington National Airport (DCA) to Friedman Memorial Airport (SUN)

Based on recent traveler bookings, the top airlines flying from Washington to Sun Valley are favored for their one-stop services, typically routing through O'Hare International Airport (ORD) with a layover of about 1 hour and 15 minutes, Salt Lake City International Airport (SLC) with approximately 55 minutes, and Denver International Airport (DEN), also around 55 minutes. These options provide the flexibility to balance price, total travel time, and cabin class, helping you find the best itinerary for your journey.

  • United: This comprehensive airline provides one-stop services, featuring one-way fares generally between $145 and $860. It operates around 42% of flights on this route, with an in-flight duration of 6 hours and 15 minutes and a total travel time of about 7 hours and 15 minutes, including layover.
  • Delta: As another full-service option, Delta offers one-stop flights with one-way prices typically ranging from $165 to $1135. This airline represents roughly 34% of the departures on this route, with an in-air time of 6 hours and 15 minutes and a total journey length of approximately 7 hours and 15 minutes, including layover.
  • American Airlines: Providing one-stop services, American Airlines has one-way fares that usually fall between $145 and $625. It accounts for about 24% of the flights on this route, featuring an in-flight time of 6 hours and 15 minutes and a total travel duration of around 7 hours and 15 minutes, including layover.

Alternative route from Washington (DCA) to Sun Valley (SUN)

  • Washington to Sun Valley (IAD-SUN): Washington Dulles International Airport (IAD) lies approximately 23 miles from Ronald Reagan Washington National Airport (DCA). On this route, one-way economy tickets generally fall between $210 and $915, influenced by the time of year and how far in advance you book. The journey is primarily served by one-stop flights, with common layover points at Denver International Airport (DEN) and Salt Lake City International Airport (SLC). Major airlines operating on this route include United and Delta. First-class service is also an option for travelers.

How to find the best prices for flights from Washington (DCA) to Sun Valley (SUN)

Getting some of the best deals on flights from Washington to Sun Valley is all about timing and flexibility. Here are some key tips to help you save:

  1. Best times to book and fly: cheaper fares are usually available when booking 2-8 weeks in advance, which coincides with when most travelers make their reservations. Afternoon departures from 12pm to 6pm often have lower prices, while morning flights from 5am to 12pm are more popular. Additionally, flying on Thursday typically results in cheaper prices, although Sunday remains the most favored travel day.
  2. Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
  3. Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.* Find Sun Valley hotel and flight deals.
  4. Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
  5. Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
  6. Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.

*Members only. Savings vary and are not available on all bundles. Select hotels.

Arriving at Friedman Memorial Airport from Ronald Reagan Washington National Airport

Sun Valley welcomes travelers from Washington with a range of transport options based on price, convenience, and proximity. For departures, Ronald Reagan Washington National Airport is roughly a 10-minute drive (covering about 5 miles) from central Washington. Sun Valley city center is approximately a 30-minute drive (covering about 18 miles) from Friedman Memorial Airport, depending on traffic. Here's how to reach Sun Valley efficiently:

  • Hotel transfer: Transfers offer a convenient way to reach your hotel in Sun Valley, with options including free hotel shuttles and private rides, which can be arranged in advance with your hotel.
  • Car rental: Renting a car from Friedman Memorial Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at Friedman Memorial Airport on Expedia.
  • Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.

Frequently asked questions

How much does a flight from Washington, DC (DCA-Ronald Reagan Washington National) to Sun Valley, ID (SUN-Friedman Memorial) cost?
You can find cheap one-way flights from $215 and cheap return flights from $449 Washington, DC (DCA-Ronald Reagan Washington National) to Sun Valley, ID (SUN-Friedman Memorial) with Expedia. One-way flights typically cost between $281 and $2278, and return flights often range between $454 and $2298. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Washington, DC (DCA-Ronald Reagan Washington National) to Sun Valley, ID (SUN-Friedman Memorial) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Washington, DC (DCA-Ronald Reagan Washington National) to Sun Valley, ID (SUN-Friedman Memorial)?
The cheapest month to fly from DCA to SUN is January when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Washington, DC (DCA-Ronald Reagan Washington National) to Sun Valley, ID (SUN-Friedman Memorial)?
Enter DCA to SUN and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
How do I find cheap flights from Washington, DC (DCA-Ronald Reagan Washington National) to Sun Valley, ID (SUN-Friedman Memorial)?
To find a cheap flight from Washington, DC (DCA-Ronald Reagan Washington National) to Sun Valley, ID (SUN-Friedman Memorial), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Washington, DC (DCA-Ronald Reagan Washington National) to Sun Valley, ID (SUN-Friedman Memorial)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
What is the earliest flight from Washington, DC (DCA-Ronald Reagan Washington National) to Sun Valley, ID (SUN-Friedman Memorial)?
The earliest flight from Ronald Reagan Washington National Airport (DCA) to Friedman Memorial Airport (SUN) usually departs at 6:00 AM, operated by American Airlines. This seasonal service is available in January, giving you a great opportunity to maximize your time in Sun Valley. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Washington, DC (DCA-Ronald Reagan Washington National) to Sun Valley, ID (SUN-Friedman Memorial)?
For flights from Washington, DC (DCA) to Sun Valley (SUN), the most popular departure times are in the early morning, from 6am to 9am. This time window accounts for around 58% of total traffic. Many travelers prefer this timing as it allows them to arrive in Sun Valley early and enjoy a full day of activities.
How long does it take to fly from Washington, DC (DCA-Ronald Reagan Washington National) to Sun Valley, ID (SUN-Friedman Memorial)?
Flights from DCA to SUN with one stop typically take around 7 hours 30 minutes, covering approximately 1,948 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Washington, DC (DCA-Ronald Reagan Washington National) to Sun Valley, ID (SUN-Friedman Memorial)?
First class seats are offered on the DCA to SUN route. First class cabins are available on:

  • American Airlines
  • Delta Air Lines
  • United Airlines

How do I earn miles on a Washington, DC (DCA-Ronald Reagan Washington National) to Sun Valley, ID (SUN-Friedman Memorial) flight with Expedia?
It's easy to earn miles on a Washington, DC (DCA-Ronald Reagan Washington National) to Sun Valley, ID (SUN-Friedman Memorial) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Sun Valley from Ronald Reagan Washington National (DCA)?
From Ronald Reagan Washington National (DCA), you can fly into Friedman Memorial (SUN) to reach Sun Valley. Some flights may connect through major hubs like O'Hare Intl. (ORD), George Bush Intercontinental (IAH), Liberty Intl. (EWR) before reaching Sun Valley. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Washington, DC (DCA-Ronald Reagan Washington National) to Sun Valley, ID (SUN-Friedman Memorial) at the last minute?
Typically, booking a last minute flight from Washington, DC (DCA-Ronald Reagan Washington National) to Sun Valley, ID (SUN-Friedman Memorial) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Washington, DC (DCA-Ronald Reagan Washington National) to Sun Valley, ID (SUN-Friedman Memorial) flight and hotel package?
Securing a Washington, DC (DCA-Ronald Reagan Washington National) to Sun Valley, ID (SUN-Friedman Memorial) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Washington, DC (DCA-Ronald Reagan Washington National) to Sun Valley, ID (SUN-Friedman Memorial)?
If you booked your Washington, DC (DCA-Ronald Reagan Washington National) to Sun Valley, ID (SUN-Friedman Memorial) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Ronald Reagan Washington National
Destination airport
Friedman Memorial
Airlines serving
Alaska Airlines, Delta, United
Roundtrip price
$448
Distance
1947 mi

Book with confidence

Washington to Sun Valley Flights

The cheapest times to fly from Washington to Sun Valley

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 Washington to Sun Valley are during the month of January. You can find some of the cheapest flights from Washington to Sun Valley with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Washington to Sun Valley

Sunday is one of the best days to book for cheap flights from Washington to Sun Valley: 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 Washington to Sun Valley

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 Washington to Sun Valley in 2026. You can also book with separate airlines for your outbound and return journeys, from $215 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 Washington to Sun Valley 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 Washington to Sun Valley 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.

 

Washington to Sun Valley Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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