An airport terminal with a control tower, a covered walkway, and multiple jet bridges.

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

View $215 flight on Sat, Jan 30, 2027Opens in a new window

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

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

Prices were available within the past 7 days and start at $215 for one-way flights and $485 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Wed, Sep 9 - Mon, Sep 14
SUN
Sun Valley
DCA
Washington
$485 Roundtrip, found 1 day ago
$485
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Wed, Sep 9 from Sun Valley to Washington, returning Mon, Sep 14, priced at $485 found 1 day ago
Alaska Airlines
Wed, Sep 9 - Mon, Sep 14
SUN
Sun Valley
DCA
Washington
$490 Roundtrip, found 1 day ago
$490
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Wed, Sep 9 from Sun Valley to Washington, returning Mon, Sep 14, priced at $490 found 1 day ago
Alaska Airlines
Wed, Sep 9 - Mon, Sep 14
SUN
Sun Valley
DCA
Washington
$496 Roundtrip, found 1 day ago
$496
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Wed, Sep 9 from Sun Valley to Washington, returning Mon, Sep 14, priced at $496 found 1 day ago
Alaska Airlines
Wed, Sep 9 - Mon, Sep 14
SUN
Sun Valley
DCA
Washington
$520 Roundtrip, found 1 day ago
$520
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Wed, Sep 9 from Sun Valley to Washington, returning Mon, Sep 14, priced at $520 found 1 day ago
Alaska Airlines
Wed, Sep 9 - Mon, Sep 14
SUN
Sun Valley
DCA
Washington
$521 Roundtrip, found 1 day ago
$521
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Wed, Sep 9 from Sun Valley to Washington, returning Mon, Sep 14, priced at $521 found 1 day ago
Alaska Airlines
Wed, Sep 9 - Mon, Sep 14
SUN
Sun Valley
DCA
Washington
$526 Roundtrip, found 1 day ago
$526
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Wed, Sep 9 from Sun Valley to Washington, returning Mon, Sep 14, priced at $526 found 1 day ago
Alaska Airlines
Wed, Sep 9 - Mon, Sep 14
SUN
Sun Valley
DCA
Washington
$532 Roundtrip, found 1 day ago
$532
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Wed, Sep 9 from Sun Valley to Washington, returning Mon, Sep 14, priced at $532 found 1 day ago
Alaska Airlines
Wed, Sep 9 - Mon, Sep 14
SUN
Sun Valley
DCA
Washington
$532 Roundtrip, found 1 day ago
$532
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Wed, Sep 9 from Sun Valley to Washington, returning Mon, Sep 14, priced at $532 found 1 day ago
Alaska Airlines
Thu, Sep 10 - Mon, Sep 14
SUN
Sun Valley
DCA
Washington
$535 Roundtrip, found 1 day ago
$535
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Thu, Sep 10 from Sun Valley to Washington, returning Mon, Sep 14, priced at $535 found 1 day ago
Alaska Airlines
Wed, Sep 9 - Mon, Sep 14
SUN
Sun Valley
DCA
Washington
$537 Roundtrip, found 1 day ago
$537
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Wed, Sep 9 from Sun Valley to Washington, returning Mon, Sep 14, priced at $537 found 1 day ago

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

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

Explore a range of airlines providing services from Sun Valley (SUN) to Washington (DCA) on this domestic short-haul route. Evaluate different options from full-service carriers to find the itinerary that aligns with your budget, schedule, and travel plans as you discover the iconic sights and neighborhoods of Washington. Here, you’ll find essential details for flights departing from Friedman Memorial Airport (SUN) to Ronald Reagan Washington National Airport (DCA).

  • Fastest flight duration: around 5h 30m in-flight, plus roughly 1h 30m layover with one stop
  • Route distance: roughly 2,000 miles (3,220 km)
  • Flights per week: around 7 departures on average
  • Typical fares (one-way): economy tickets often range from $145–$670, depending on seasonality and how far ahead you book

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

According to recent traveler bookings, here are the top airlines favored for flights from Sun Valley to Washington, particularly those offering one-stop service. Common layover locations include O'Hare International Airport (ORD) with a layover of about 2 hours and 45 minutes, Salt Lake City International Airport (SLC) with approximately 1 hour and 15 minutes, and Seattle-Tacoma International Airport (SEA) with a layover of around 2 hours and 30 minutes. This gives you the flexibility to choose an itinerary that best balances price, total travel time, and cabin class.

  • Delta: Delta operates as a full-service airline providing one-stop flights, capturing about 41% of the departures on this route. One-way ticket prices usually range from $230 to $975, with an in-flight duration of 5 hours and 30 minutes and a total travel time of around 7 hours and 15 minutes, including layover time.
  • American Airlines: American Airlines, another full-service airline, offers one-stop services and represents roughly 30% of departures for this route. Their one-way fares typically fall between $145 and $695. Expect an in-flight time of 5 hours and 30 minutes, with a total journey duration of approximately 7 hours and 15 minutes, factoring in a layover.
  • Alaska Airlines: Alaska Airlines is a full-service airline providing one-stop flights, accounting for about 15% of departures on this route. One-way fares generally range from $290 to $585. The in-flight experience lasts around 5 hours and 30 minutes, with the overall journey time being roughly 7 hours and 15 minutes, including a layover.
  • United: United, a full-service airline, also offers one-stop services, making up approximately 15% of the departures for this route. Their one-way fares usually range from $315 to $720. Passengers can expect an in-flight duration of 5 hours and 30 minutes, with a total travel time of about 7 hours and 15 minutes, including the layover.

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

  • Sun Valley to Washington (SUN-IAD): Washington Dulles International Airport (IAD) is approximately 23 miles from Ronald Reagan Washington National Airport (DCA). On this route, one-way economy ticket prices generally range between $150 and $785, influenced by the time of year and how far in advance you book. This journey is usually offered as a one-stop flight, 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, with first-class service also available.

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

Getting some of the best deals on flights from Sun Valley to Washington 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 at least two months in advance, which coincides with when most travelers make their reservations. Afternoon departures (12 PM to 6 PM) often provide lower prices, even though morning flights (5 AM to 12 PM) are the most popular. Additionally, flying on Friday tends to offer both affordability and increased travel demand.
  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.*
  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 Ronald Reagan Washington National Airport from Friedman Memorial Airport

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

  • Hotel transfer: Transfers offer a convenient way to reach your hotel in Washington, with private rides that can be arranged in advance.
  • Car rental: Renting a car from Ronald Reagan Washington National Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at Ronald Reagan Washington National 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.
  • Public transportation: From Ronald Reagan Washington National Airport, National Airport Station, a metro station, is located about 0.2 miles away on foot, while Alexandria Station, a train station, is approximately 3.8 miles away by car. Additionally, Washington Seaport, a seaport, is about 4.8 miles from the airport, typically reached by car.

Frequently asked questions

How much does a flight from Sun Valley, ID (SUN-Friedman Memorial) to Washington, DC (DCA-Ronald Reagan Washington National) cost?
You can find cheap one-way flights from $215 and cheap return flights from $485 Sun Valley, ID (SUN-Friedman Memorial) to Washington, DC (DCA-Ronald Reagan Washington National) with Expedia. One-way flights typically cost between $304 and $1520, and return flights often range between $482 and $2152. 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 Sun Valley, ID (SUN-Friedman Memorial) to Washington, DC (DCA-Ronald Reagan Washington National) 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 Sun Valley, ID (SUN-Friedman Memorial) to Washington, DC (DCA-Ronald Reagan Washington National)?
The cheapest month to fly from SUN to DCA is September 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 Sun Valley, ID (SUN-Friedman Memorial) to Washington, DC (DCA-Ronald Reagan Washington National)?
Enter SUN to DCA and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Sun Valley, ID (SUN-Friedman Memorial) to Washington, DC (DCA-Ronald Reagan Washington National)?
American Airlines is one of the cheapest airlines offering connecting flights from Sun Valley, ID (SUN) to Washington, DC (DCA), with round-trip tickets starting from around $516. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Sun Valley, ID (SUN-Friedman Memorial) to Washington, DC (DCA-Ronald Reagan Washington National)?
To find a cheap flight from Sun Valley, ID (SUN-Friedman Memorial) to Washington, DC (DCA-Ronald Reagan Washington National), 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 Sun Valley, ID (SUN-Friedman Memorial) to Washington, DC (DCA-Ronald Reagan Washington National)?
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 Sun Valley, ID (SUN-Friedman Memorial) to Washington, DC (DCA-Ronald Reagan Washington National)?
The earliest flight from Sun Valley (SUN-Friedman Memorial) to Washington, DC (DCA-Ronald Reagan Washington National) typically departs at around 7:00 AM, operated by United. This flight is part of a seasonal service available in October, making it a convenient option for travelers heading to the capital. 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 Sun Valley, ID (SUN-Friedman Memorial) to Washington, DC (DCA-Ronald Reagan Washington National)?
The most popular departure times for flights from Sun Valley (SUN) to Washington, DC (DCA) are in the early morning, from 6am to 9am. About 61% of passengers prefer this time window. Many major carriers, including Delta Air Lines and American Airlines, offer flights during this window. This timing is favored because it lets you arrive in DC with plenty of time to enjoy your day.
How long does it take to fly from Sun Valley, ID (SUN-Friedman Memorial) to Washington, DC (DCA-Ronald Reagan Washington National)?
Flights from SUN to DCA with one stop typically take around 6 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 Sun Valley, ID (SUN-Friedman Memorial) to Washington, DC (DCA-Ronald Reagan Washington National)?
Select the "Business class" and "First class" filters when looking for SUN to DCA flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Sun Valley, ID (SUN-Friedman Memorial) to Washington, DC (DCA-Ronald Reagan Washington National) flight with Expedia?
It's easy to earn miles on a Sun Valley, ID (SUN-Friedman Memorial) to Washington, DC (DCA-Ronald Reagan Washington National) 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 Washington from Friedman Memorial (SUN)?
From Friedman Memorial (SUN), you can fly into Washington Dulles Intl. (IAD) and Ronald Reagan Washington National (DCA) in Washington. Some flights may connect through major hubs like Denver Intl. (DEN), Seattle - Tacoma Intl. (SEA), Salt Lake City Intl. (SLC) before reaching Washington. 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 Sun Valley, ID (SUN-Friedman Memorial) to Washington, DC (DCA-Ronald Reagan Washington National) at the last minute?
Typically, booking a last minute flight from Sun Valley, ID (SUN-Friedman Memorial) to Washington, DC (DCA-Ronald Reagan Washington National) 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 Sun Valley, ID (SUN-Friedman Memorial) to Washington, DC (DCA-Ronald Reagan Washington National) flight and hotel package?
Securing a Sun Valley, ID (SUN-Friedman Memorial) to Washington, DC (DCA-Ronald Reagan Washington National) Washington Vacation Packages 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 Sun Valley, ID (SUN-Friedman Memorial) to Washington, DC (DCA-Ronald Reagan Washington National)?
If you booked your Sun Valley, ID (SUN-Friedman Memorial) to Washington, DC (DCA-Ronald Reagan Washington National) 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
Friedman Memorial
Destination airport
Ronald Reagan Washington National
Airlines serving
Alaska Airlines, Delta
Roundtrip price
$485
Distance
1947 mi

Book with confidence

Sun Valley to Washington Flights

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

 

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

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

 

Sun Valley to Washington Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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