HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Dulles Intl

$466+ Cheap flights from Lewiston, ID (LWS) to Dulles Intl (IAD)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/3. Fares are subject to change and may not be available on all flights or dates of travel.
LWS — IAD
Nov 9 — Nov 161
Sun 11/9
Sun 11/16
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Lewiston to Dulles Intl with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Lewiston to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Lewiston (LWS) to Dulles Intl (IAD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 10, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$466
(Delta)
Provider with most accurate pricing for Lewiston Nez Perce Rgnl-Washington, D.C. Dulles Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lewiston Nez Perce Rgnl-Washington, D.C. Dulles Intl flights.
Search Deals
From Lewiston Nez Perce Rgnl to Washington, D.C. Dulles Intl
Search Deals

Find flight deals from Lewiston to Dulles Intl

Best flights from Lewiston to Dulles Intl
Discover carefully curated flight deals from Lewiston to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 10, 2025.

This Delta deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/37:05 amLWS - IAD
1 stop13h 11mDelta
Sat 3/77:00 amIAD - LWS
1 stop17h 02mDelta
Deal found 10/8$466

Cheapflights Fare Finder

 
Customize your flight search to find flights from Lewiston to Dulles Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 10, 2025.
Use the filters below to find and compare flights from Lewiston to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Lewiston

Fly to

Dulles Intl

Route

Depart

Return

Price

LewistonWashington, D.C.

LWS - IAD

LWSIAD

Lewiston Nez Perce Rgnl

Tue 3/3

7:05 am-11:16 pm

1 stop13h 11m

Washington, D.C. Dulles Intl

Sat 3/7

7:00 am-9:02 pm

1 stop17h 02m

$466

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/8

  • Most accurate provider: When it comes to deals on Lewiston, Idaho-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Lewiston, Idaho-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Lewiston, Idaho-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Lewiston, Idaho-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Lewiston, Idaho-Washington, D.C. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Lewiston to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Lewiston with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Lewiston to Washington, D.C. Dulles Intl Airport

What is the cheapest month to book a flight from Lewiston, Idaho to Washington, D.C. Dulles Intl Airport?

Currently, September is the cheapest month in which you can book a flight from Lewiston, Idaho to Washington, D.C. Dulles Intl Airport (average of $258). Flying from Lewiston, Idaho to Washington, D.C. Dulles Intl Airport in March is currently the most expensive (average of $494). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Lewiston to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Lewiston to Washington, D.C. Dulles Intl?

    If you book a flight to Washington, D.C. Dulles Intl from Lewiston, you will be flying from Nez Perce Rgnl, which is the city’s only airport. Lewiston Nez Perce Rgnl (LWS) is located 1.9 mi from the center of Lewiston. There are 0 flights from Nez Perce Rgnl to Washington, D.C. Dulles Intl per day from 0 different airlines.

  • How long is the flight from Lewiston, Idaho to Washington, D.C. Dulles Intl Airport?

    Airlines like Delta fly from Lewiston, Idaho to Washington, D.C. Dulles Intl Airport in about 13h 11m. The time it takes to get you to your destination can typically vary by up to . The distance between Lewiston, Idaho and Washington, D.C. Dulles Intl Airport is about 2050 mi.

  • Can I find deals for flights from Lewiston to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on Lewiston to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Lewiston to Dulles Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Lewiston to Dulles Intl.

  • Can I find deals for business class flights from Lewiston to Dulles Intl?

    Yes. Cheapflights offers flight deals from Lewiston to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Lewiston, Idaho to Washington, D.C. Dulles Intl Airport?

    Currently, September is the cheapest month in which you can book a flight from Lewiston, Idaho to Washington, D.C. Dulles Intl Airport (average of $258). Flying from Lewiston, Idaho to Washington, D.C. Dulles Intl Airport in March is currently the most expensive (average of $494). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Alexandria
Woodbridge
Arlington
Tysons
Silver Spring
Springfield
Hanover
Gaithersburg
Fredericksburg
Fairfax
Linthicum Heights
Falls Church
Owings Mills
Manassas
Oxon Hill
Laurel
Towson
National Harbor
Waldorf
Rockville

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.