$162 Cheap Flights from Redmond (RDM) to Washington (IAD)

View $162 flight on Sat, Jan 10, 2026Opens in a new window

Popular airlines from Redmond Municipal Airport (RDM) to Washington Dulles Intl. Airport (IAD)

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Cheap Flights from Redmond to Washington (RDM-IAD)

Prices were available within the past 7 days and start at $162 for one-way flights and $287 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Mon, Jan 26 - Mon, Feb 2
RDM
Redmond
IAD
Washington
$287 Roundtrip, found 4 hours ago
$287
Roundtrip
found 4 hours ago
Select Alaska Airlines flight, departing Mon, Jan 26 from Redmond to Washington, returning Mon, Feb 2, priced at $287 found 4 hours ago
Alaska Airlines
Tue, Dec 23 - Thu, Jan 1
RDM
Redmond
IAD
Washington
$305 Roundtrip, found 1 day ago
$305
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Tue, Dec 23 from Redmond to Washington, returning Thu, Jan 1, priced at $305 found 1 day ago
Alaska Airlines
Fri, Dec 12 - Sun, Dec 14
RDM
Redmond
IAD
Washington
$306 Roundtrip, found 21 hours ago
$306
Roundtrip
found 21 hours ago
Select Alaska Airlines flight, departing Fri, Dec 12 from Redmond to Washington, returning Sun, Dec 14, priced at $306 found 21 hours ago
Alaska Airlines
Fri, Dec 12 - Sun, Dec 14
RDM
Redmond
IAD
Washington
$315 Roundtrip, found 10 hours ago
$315
Roundtrip
found 10 hours ago
Select Alaska Airlines flight, departing Fri, Dec 12 from Redmond to Washington, returning Sun, Dec 14, priced at $315 found 10 hours ago
Alaska Airlines
Tue, Dec 23 - Tue, Dec 30
RDM
Redmond
IAD
Washington
$324 Roundtrip, found 1 day ago
$324
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Tue, Dec 23 from Redmond to Washington, returning Tue, Dec 30, priced at $324 found 1 day ago
Alaska Airlines
Wed, Dec 3 - Sun, Dec 7
RDM
Redmond
IAD
Washington
$325 Roundtrip, found 17 hours ago
$325
Roundtrip
found 17 hours ago
Select Alaska Airlines flight, departing Wed, Dec 3 from Redmond to Washington, returning Sun, Dec 7, priced at $325 found 17 hours ago
Hawaiian Airlines
Thu, Nov 27 - Sun, Dec 14
RDM
Redmond
IAD
Washington
$330 Roundtrip, found 2 days ago
$330
Roundtrip
found 2 days ago
Select Hawaiian Airlines flight, departing Thu, Nov 27 from Redmond to Washington, returning Sun, Dec 14, priced at $330 found 2 days ago
Hawaiian Airlines
Wed, Dec 24 - Wed, Jan 7
RDM
Redmond
IAD
Washington
$334 Roundtrip, found 1 day ago
$334
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Wed, Dec 24 from Redmond to Washington, returning Wed, Jan 7, priced at $334 found 1 day ago
Delta
Sat, Dec 13 - Sun, Dec 14
RDM
Redmond
IAD
Washington
$348 Roundtrip, found 2 days ago
$348
Roundtrip
found 2 days ago
Select Delta flight, departing Sat, Dec 13 from Redmond to Washington, returning Sun, Dec 14, priced at $348 found 2 days ago
United
Tue, May 19 - Sat, May 23
RDM
Redmond
IAD
Washington
$373 Roundtrip, found 17 hours ago
$373
Roundtrip
found 17 hours ago
Select United flight, departing Tue, May 19 from Redmond to Washington, returning Sat, May 23, priced at $373 found 17 hours ago

Find the cheapest month to fly from Redmond (RDM) to Washington (IAD)

September is typically the cheapest month to fly

From $298 - $652 per traveler.

Alternative airports near Washington

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

Select flight to Ronald Reagan Washington National DCA. Cheapest and Closest option available. Average driving time to city center is 8 minutes. Flights from $479
DCA
Ronald Reagan Washington National
CheapestClosest
Average driving time to city center8 min
Flights from $479

Frequently asked questions

How much does a flight from Robert's Field Airport (RDM) to Washington Dulles Intl. Airport (IAD) cost?
Grab a cheap one-way flight from $162 or cheap return flight from $287 from Robert's Field Airport (RDM) 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 Robert's Field Airport (RDM) to Washington Dulles Intl. Airport (IAD)?
The cheapest month to fly from RDM to IAD is January, when demand is low. Off-peak months are typically when you'll find cheap fares for travel between these airports.
What is the cheapest airline that flies from Robert's Field Airport (RDM) to Washington Dulles Intl. Airport (IAD)?
To find the cheapest airline flying from RDM to IAD, use Expedia's filter tool. Tailor your search based on your travel style, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to list the most affordable options first.
How many flights per day from Robert's Field Airport (RDM) to Washington Dulles Intl. Airport (IAD)?
You'll have to hop on a flight with a layover if you're traveling from Robert's Field Airport (RDM) 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 discover an option that works for you.
What day of the week has the most flights from RDM to IAD?
You'll generally find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Robert's Field Airport (RDM) to Washington Dulles Intl. Airport (IAD)?
To reach Washington Dulles Intl. Airport (IAD) on time, choose a flight that leaves Robert's Field Airport (RDM) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**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 Robert's Field Airport (RDM) to Washington Dulles Intl. Airport (IAD) last-minute?
Last-minute fares from RDM to IAD are usually more expensive. For the best rates, start searching for flights early. That being said, if you're flexible with your travel dates, it's possible to find a cheap fare right before your journey.
Is it cheaper to book a RDM to IAD flight and hotel package?
Compared with arranging flights and hotels separately, booking a RDM to IAD flight and hotel package with Expedia could result in significant savings. Better still, having it all in one place will take the hassle out of planning your trip. Simply pick your flights and choose from our wide range of stays, then personalize your trip with extras like car rentals and activities.
Can I cancel or change the date of my flight from Robert's Field Airport (RDM) to Washington Dulles Intl. Airport (IAD)?
If you booked your RDM to IAD flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the fare type you purchased, additional charges may apply for changes beyond that time. 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
Robert's Field
Destination airport
Washington Dulles Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, United
Roundtrip price
$286
Distance
2260 mi

Book with confidence

Redmond to Washington Flights

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

 

The best time to book a flight from Redmond to Washington

Sunday is one of the best days to book for cheap flights from Redmond 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 Redmond 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 Redmond to Washington in 2025. You can also book with separate airlines for your outbound and return journeys, from $162 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 Redmond 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 Redmond 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.

 

Redmond to Washington Flights

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*Available to One Key members.