$159 Cheap Flights from Washington (IAD) to Redmond (RDM)

View $159 flight on Wed, Sep 10, 2025Opens in a new window

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

Cheap Flights from Washington to Redmond (IAD-RDM)

Prices were available within the past 7 days and start at $159 for one-way flights and $314 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Bargain Flight
Wed, Sep 24 - Tue, Sep 30
IAD
Washington
RDM
Redmond
$314 Roundtrip, found 3 days ago
$314
Roundtrip
found 3 days ago
Select Bargain Flight flight, departing Wed, Sep 24 from Washington to Redmond, returning Tue, Sep 30, priced at $314 found 3 days ago
Alaska Airlines
Tue, Sep 23 - Tue, Sep 30
IAD
Washington
RDM
Redmond
$318 Roundtrip, found 1 hour ago
$318
Roundtrip
found 1 hour ago
Select Alaska Airlines flight, departing Tue, Sep 23 from Washington to Redmond, returning Tue, Sep 30, priced at $318 found 1 hour ago
United
Wed, Sep 24 - Tue, Sep 30
IAD
Washington
RDM
Redmond
$319 Roundtrip, found 3 days ago
$319
Roundtrip
found 3 days ago
Select United flight, departing Wed, Sep 24 from Washington to Redmond, returning Tue, Sep 30, priced at $319 found 3 days ago
Delta
Sat, Sep 27 - Sat, Sep 27
IAD
Washington
RDM
Redmond
$319 Roundtrip, found 3 days ago
$319
Roundtrip
found 3 days ago
Select Delta flight, departing Sat, Sep 27 from Washington to Redmond, returning Sat, Sep 27, priced at $319 found 3 days ago
American Airlines
Tue, Aug 19 - Tue, Aug 26
IAD
Washington
RDM
Redmond
$322 Roundtrip, found 4 days ago
$322
Roundtrip
found 4 days ago
Select American Airlines flight, departing Tue, Aug 19 from Washington to Redmond, returning Tue, Aug 26, priced at $322 found 4 days ago
United
Wed, Sep 24 - Tue, Sep 30
IAD
Washington
RDM
Redmond
$324 Roundtrip, found 3 days ago
$324
Roundtrip
found 3 days ago
Select United flight, departing Wed, Sep 24 from Washington to Redmond, returning Tue, Sep 30, priced at $324 found 3 days ago
American Airlines
Tue, Aug 19 - Tue, Aug 26
IAD
Washington
RDM
Redmond
$324 Roundtrip, found 4 days ago
$324
Roundtrip
found 4 days ago
Select American Airlines flight, departing Tue, Aug 19 from Washington to Redmond, returning Tue, Aug 26, priced at $324 found 4 days ago
American Airlines
Wed, Aug 20 - Wed, Aug 27
IAD
Washington
RDM
Redmond
$329 Roundtrip, found 4 days ago
$329
Roundtrip
found 4 days ago
Select American Airlines flight, departing Wed, Aug 20 from Washington to Redmond, returning Wed, Aug 27, priced at $329 found 4 days ago
United
Wed, Sep 24 - Tue, Sep 30
IAD
Washington
RDM
Redmond
$331 Roundtrip, found 3 days ago
$331
Roundtrip
found 3 days ago
Select United flight, departing Wed, Sep 24 from Washington to Redmond, returning Tue, Sep 30, priced at $331 found 3 days ago
Hawaiian Airlines
Wed, Aug 20 - Tue, Sep 2
IAD
Washington
RDM
Redmond
$340 Roundtrip, found 4 days ago
$340
Roundtrip
found 4 days ago
Select Hawaiian Airlines flight, departing Wed, Aug 20 from Washington to Redmond, returning Tue, Sep 2, priced at $340 found 4 days ago

Alternative airports near Redmond

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

Select flight to Robert's Field RDM. Cheapest and Closest option available. Average driving time to city center is 4 minutes. Flights from $431
RDM
Robert's Field
CheapestClosest
Average driving time to city center4 min
Flights from $431
Flights from Washington (IAD) to Redmond (RDM)
Origin airport
Washington Dulles Intl.
Destination airport
Robert's Field
Airlines serving
Alaska Airlines, American Airlines, Delta, Hawaiian Airlines, United
Roundtrip price
$314
Distance
2260 mi

Washington to Redmond Flights

The cheapest times to fly from Washington to Redmond

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

 

The best time to book a flight from Washington to Redmond

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

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 Redmond in 2025. You can also book with separate airlines for your outbound and return journeys, from $159 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 Redmond 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 Redmond 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 Washington Dulles Intl. Airport (IAD) to Robert's Field Airport (RDM) cost?
Discover the latest flight deals from IAD to RDM by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from IAD to RDM?
The cheapest flights from IAD to RDM are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from IAD to RDM?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from IAD to RDM. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Washington Dulles Intl. Airport (IAD) to Robert's Field Airport (RDM)?
Nonstop flights from Washington Dulles Intl. Airport (IAD) to Robert's Field Airport (RDM) aren't available daily, so you'll have to take a flight with a layover. Explore your options with our filter tool. Enter your travel details and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from IAD to RDM?
Generally you'll find the most flight options available on a Friday. Tuesdays tend to be the quietest.* But this can vary depending on the time of year, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Washington Dulles Intl. Airport (IAD) to Robert's Field Airport (RDM)?
To land at Robert's Field Airport (RDM) without delays, opt for a flight that leaves Washington Dulles Intl. Airport (IAD) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**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 Washington Dulles Intl. Airport (IAD) to Robert's Field Airport (RDM) last-minute?
Last-minute fares from IAD to RDM are generally more expensive. To lock in the lowest rates, start looking for flights as soon as possible. That said, if you're flexible with your travel dates, it's possible to find a cheap fare right before you leave.
Is it cheaper to book an IAD to RDM flight and hotel package?
Compared with arranging hotels and flights separately, booking an IAD to RDM flight and hotel package with Expedia could result in significant savings. Better still, having it all in one place will take the stress out of travel planning. Simply secure your flights and choose from our wide range of stays, then personalize your trip with other add-ons like tours, car rentals and activities.
Can I cancel or change the date of my flight from Washington Dulles Intl. Airport (IAD) to Robert's Field Airport (RDM)?
If you reserved your IAD to RDM flight in the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the ticket 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.

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*Available to One Key members.