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Dulles Intl

$435+ 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
Dec 3 — Dec 101
Wed 12/3
Wed 12/10
1 adult, Economy
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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 November 3, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$435
(Delta)
Provider with most accurate pricing for Lewiston Nez Perce Rgnl-Washington, D.C. Dulles Intl flight deals.
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Provider most trusted by Cheapflights users for Lewiston Nez Perce Rgnl-Washington, D.C. Dulles Intl flights.
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From Lewiston Nez Perce Rgnl to Washington, D.C. Dulles Intl
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Find flight deals from Lewiston to Dulles Intl

Cheapest flights from Lewiston to Dulles Intl
Explore the most affordable flight options available from Lewiston to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 3, 2025.

This Delta deal was found by Cheapflights users on 11/3. 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.
Mon 12/2212:16 pmLWS - IAD
1 stop8h 02mDelta
Thu 1/17:05 amIAD - LWS
1 stop7h 31mDelta
Deal found 11/3$888
This Delta deal was found by Cheapflights users on 11/3. 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 12/237:15 amLWS - IAD
2 stops13h 42mDelta
Thu 1/17:05 amIAD - LWS
1 stop7h 31mDelta
Deal found 11/3$954

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 November 3, 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

$435

LewistonWashington, D.C.

LWS - IAD

LWSIAD

Lewiston Nez Perce Rgnl

Mon 12/22

12:16 pm-11:18 pm

1 stop8h 02m

Washington, D.C. Dulles Intl

Thu 1/1

7:05 am-11:36 am

1 stop7h 31m

$888

LewistonWashington, D.C.

LWS - IAD

LWSIAD

Lewiston Nez Perce Rgnl

Tue 12/23

12:16 pm-11:18 pm

1 stop8h 02m

Washington, D.C. Dulles Intl

Thu 1/1

7:05 am-11:36 am

1 stop7h 31m

$888

LewistonWashington, D.C.

LWS - IAD

LWSIAD

Lewiston Nez Perce Rgnl

Mon 4/20

12:30 pm-11:51 pm

1 stop8h 21m

$528

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/1

  • 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
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Springfield
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Silver Spring
Fairfax
Fredericksburg
Falls Church
Owings Mills
Linthicum Heights
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Oxon Hill
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National Harbor
Waldorf
Bowie

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