$514 Cheap Flights from Washington (IAD) to Lewiston (LWS)

View $514 flight on Wed, Nov 26, 2025Opens in a new window

Popular airlines from Washington Dulles Intl. Airport (IAD) to Lewiston, ID (LWS-Nez Perce County Regional)

Cheap Flights from Washington to Lewiston (IAD-LWS)

Prices were available within the past 7 days and start at $514 for one-way flights and $397 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, Nov 4 - Mon, Nov 10
IAD
Washington
LWS
Lewiston
$397 Roundtrip, found 5 days ago
$397
Roundtrip
found 5 days ago
Select Delta flight, departing Tue, Nov 4 from Washington to Lewiston, returning Mon, Nov 10, priced at $397 found 5 days ago
Delta
Wed, Dec 3 - Tue, Dec 16
IAD
Washington
LWS
Lewiston
$402 Roundtrip, found 5 days ago
$402
Roundtrip
found 5 days ago
Select Delta flight, departing Wed, Dec 3 from Washington to Lewiston, returning Tue, Dec 16, priced at $402 found 5 days ago
Delta
Sat, Nov 15 - Sat, Dec 6
IAD
Washington
LWS
Lewiston
$416 Roundtrip, found 5 days ago
$416
Roundtrip
found 5 days ago
Select Delta flight, departing Sat, Nov 15 from Washington to Lewiston, returning Sat, Dec 6, priced at $416 found 5 days ago
Delta
Sat, Nov 8 - Thu, Nov 27
IAD
Washington
LWS
Lewiston
$417 Roundtrip, found 5 days ago
$417
Roundtrip
found 5 days ago
Select Delta flight, departing Sat, Nov 8 from Washington to Lewiston, returning Thu, Nov 27, priced at $417 found 5 days ago
Delta
Thu, Dec 4 - Wed, Dec 17
IAD
Washington
LWS
Lewiston
$431 Roundtrip, found 5 days ago
$431
Roundtrip
found 5 days ago
Select Delta flight, departing Thu, Dec 4 from Washington to Lewiston, returning Wed, Dec 17, priced at $431 found 5 days ago
Delta
Tue, Nov 4 - Sun, Nov 16
IAD
Washington
LWS
Lewiston
$432 Roundtrip, found 5 days ago
$432
Roundtrip
found 5 days ago
Select Delta flight, departing Tue, Nov 4 from Washington to Lewiston, returning Sun, Nov 16, priced at $432 found 5 days ago
Delta
Wed, Nov 26 - Sun, Dec 7
IAD
Washington
LWS
Lewiston
$436 Roundtrip, found 5 days ago
$436
Roundtrip
found 5 days ago
Select Delta flight, departing Wed, Nov 26 from Washington to Lewiston, returning Sun, Dec 7, priced at $436 found 5 days ago
Delta
Wed, Dec 3 - Wed, Dec 17
IAD
Washington
LWS
Lewiston
$436 Roundtrip, found 5 days ago
$436
Roundtrip
found 5 days ago
Select Delta flight, departing Wed, Dec 3 from Washington to Lewiston, returning Wed, Dec 17, priced at $436 found 5 days ago
Delta
Wed, Dec 3 - Sun, Dec 14
IAD
Washington
LWS
Lewiston
$437 Roundtrip, found 5 days ago
$437
Roundtrip
found 5 days ago
Select Delta flight, departing Wed, Dec 3 from Washington to Lewiston, returning Sun, Dec 14, priced at $437 found 5 days ago
Delta
Sat, Nov 8 - Mon, Nov 24
IAD
Washington
LWS
Lewiston
$447 Roundtrip, found 5 days ago
$447
Roundtrip
found 5 days ago
Select Delta flight, departing Sat, Nov 8 from Washington to Lewiston, returning Mon, Nov 24, priced at $447 found 5 days ago

Alternative airports near Lewiston

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

Select flight to Pullman - Moscow Regional PUW. Cheapest option available. Average driving time to city center is 48 minutes. Flights from $691
PUW
Pullman - Moscow Regional
Cheapest
Average driving time to city center48 min
Flights from $691

Frequently asked questions

How much does a flight from Washington Dulles Intl. Airport (IAD) to Nez Perce County Regional Airport (LWS) cost?
Lock in a cheap one-way flight from $514 or cheap return flight from $397 from Washington Dulles Intl. Airport (IAD) to Nez Perce County Regional Airport (LWS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Washington Dulles Intl. Airport (IAD) to Nez Perce County Regional Airport (LWS)?
November is the most affordable month to fly from IAD to LWS. Traveling during an off-peak travel window is often the key to landing a great deal.
What is the cheapest airline that flies from Washington Dulles Intl. Airport (IAD) to Nez Perce County Regional Airport (LWS)?
To find the cheapest airline flying from IAD to LWS, use Expedia's filter tool. Tailor your search based on what matters most to you, such as preferred carriers and number of stops. You can then sort your results by "Price (lowest to highest)" to list the most affordable options first.
How many flights per day from Washington Dulles Intl. Airport (IAD) to Nez Perce County Regional Airport (LWS)?
Direct flights from Washington Dulles Intl. Airport (IAD) to Nez Perce County Regional Airport (LWS) aren't available daily, so you'll need to take a flight with a layover. Explore your options with our filter tool. Enter your travel dates and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from IAD to LWS?
Typically you'll find the widest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* However, this can change based on the season, carrier 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 Nez Perce County Regional Airport (LWS)?
To reach Nez Perce County Regional Airport (LWS) without delays, pick a flight that leaves from Washington Dulles Intl. Airport (IAD) before 3 PM. The chance 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 Washington Dulles Intl. Airport (IAD) to Nez Perce County Regional Airport (LWS) last-minute?
Last-minute fares from IAD to LWS are generally more expensive. To lock in the best rates, start searching for flights early. That being said, if your travel plans are flexible, it's possible to find a cheap fare right before you leave.
Is it cheaper to book an IAD to LWS flight and hotel package?
Opting for an IAD to LWS flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip all in one place. Choose from our impressive range of hotels and then add car rentals, flights and activities to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Washington Dulles Intl. Airport (IAD) to Nez Perce County Regional Airport (LWS)?
You can usually cancel or reschedule your IAD to LWS flight. However, if the booking was made more than 24 hours ago, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find more information on our Customer Service portal.

Travel information

Origin airport
Washington Dulles Intl.
Destination airport
Nez Perce County Regional
Roundtrip price
$396
Distance
2051 mi

Book with confidence

Washington to Lewiston Flights

The cheapest times to fly from Washington to Lewiston

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

 

The best time to book a flight from Washington to Lewiston

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

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 Lewiston in 2025. You can also book with separate airlines for your outbound and return journeys, from $514 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 Lewiston 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 Lewiston 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 Lewiston Flights

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*Available to One Key members.