In terms of precipitation, rainfall in Washington, D.C. ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. when rainfall is around 2.6 in.

If weather is an important factor for your trip to Washington, D.C., use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

What are the most popular routes from Lewiston, Idaho to Washington, D.C.?

Most travelers choose Lewiston Nez Perce Rgnl - Baltimore/Washington, Lewiston Nez Perce Rgnl - Washington, D.C. Reagan-National or Lewiston Nez Perce Rgnl - Washington, D.C. Dulles Intl when deciding on the best route from Lewiston, Idaho to Washington, D.C..

What is the cheapest time of day to fly from LWS to WAS?

When flying from Lewiston, Idaho to Washington, D.C., the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Most accurate provider : When it comes to deals on Lewiston, Idaho-Washington, D.C. flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Lewiston, Idaho-Washington, D.C. flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Lewiston, Idaho-Washington, D.C. flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Lewiston, Idaho-Washington, D.C. flights, Cheapflights users trust eDreams the most. eDreams 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. flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

For a flight from Lewiston to Washington, D.C., you will be flying from Nez Perce Rgnl. Lewiston Nez Perce Rgnl (LWS) is just 1.9 mi from the center of the city. Nez Perce Rgnl is the only Lewiston airport and it handles 0 outbound flights to Washington, D.C. per day. 0 airlines have flights to Washington, D.C. from Lewiston Nez Perce Rgnl on a regular basis.

Can I find deals for flights from Lewiston to Washington, D.C. that include hotel bookings?

Yes. In addition to deals on Lewiston to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Lewiston to Washington, D.C.?

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

Can I find deals for business class flights from Lewiston to Washington, D.C.?

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

$263+ Flights from Lewiston, ID to Washington, D.C.

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Cheap flight deals from Lewiston to Washington, D.C.

One-way flights from Lewiston to Washington, D.C.
Search for one-way flight options from Lewiston to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated December 12, 2025.

Tue 2/107:05 amLWS - IAD

2 stops13h 52mDelta

Deal found 12/11

$263

Mon 4/2012:30 pmLWS - IAD

1 stop8h 21mDelta

Deal found 12/10

$508

Mon 4/2012:30 pmLWS - BWI

2 stops8h 45mDelta

Deal found 12/10

$514

Mon 4/206:25 amLWS - DCA

2 stops13h 47mDelta

Deal found 12/10

$557

Find flight deals from Lewiston to Washington, D.C.

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$1,184 (Delta)
One-way from	$263 (Delta)

Provider with most accurate pricing for Lewiston Nez Perce Rgnl-Washington, D.C. (WAS) flight deals.

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Provider most trusted by Cheapflights users for Lewiston Nez Perce Rgnl-Washington, D.C. (WAS) flights.

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From Lewiston Nez Perce Rgnl to Washington, D.C. (WAS)

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One-way flight from Lewiston Nez Perce Rgnl to Washington, D.C. (WAS)

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Cheapflights Fare Finder

Use the filters below to find and compare flights from Lewiston to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LewistonWashington, D.C.

LWS - IAD

LWSIAD

Lewiston Nez Perce Rgnl

Tue 2/10

7:05 am-11:57 pm

2 stops13h 52m

$263

LewistonWashington, D.C.

LWS - IAD

LWSIAD

Lewiston Nez Perce Rgnl

Mon 4/20

12:30 pm-11:51 pm

1 stop8h 21m

$508

LewistonBaltimore

LWS - BWI

LWSBWI

Lewiston Nez Perce Rgnl

Mon 4/20

12:30 pm-12:15 am

2 stops8h 45m

$514

LewistonWashington, D.C.

LWS - DCA

LWSDCA

Lewiston Nez Perce Rgnl

Mon 4/20

6:25 am-11:12 pm

2 stops13h 47m

$557

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

Compare providers for flights from Lewiston to Washington, D.C.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Lewiston to Washington, D.C. in December.

Provider	Price Accuracy	Trust Score*
eDreams	Price Accuracy3 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Lewiston, Idaho-Washington, D.C. flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Lewiston, Idaho-Washington, D.C. flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Lewiston, Idaho-Washington, D.C. flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Lewiston, Idaho-Washington, D.C. flights, Cheapflights users trust eDreams the most. eDreams 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. 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 Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. 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.

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

Currently, November is the cheapest month in which you can book a flight from Lewiston, Idaho to Washington, D.C. (average of $229). Flying from Lewiston, Idaho to Washington, D.C. in December is currently the most expensive (average of $411). 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

What airport do you fly from for flights from Lewiston to Washington, D.C.?
For a flight from Lewiston to Washington, D.C., you will be flying from Nez Perce Rgnl. Lewiston Nez Perce Rgnl (LWS) is just 1.9 mi from the center of the city. Nez Perce Rgnl is the only Lewiston airport and it handles 0 outbound flights to Washington, D.C. per day. 0 airlines have flights to Washington, D.C. from Lewiston Nez Perce Rgnl on a regular basis.
What are the most popular routes from Lewiston, Idaho to Washington, D.C.?
Most travelers choose Lewiston Nez Perce Rgnl - Baltimore/Washington, Lewiston Nez Perce Rgnl - Washington, D.C. Reagan-National or Lewiston Nez Perce Rgnl - Washington, D.C. Dulles Intl when deciding on the best route from Lewiston, Idaho to Washington, D.C..
Can I find deals for flights from Lewiston to Washington, D.C. that include hotel bookings?
Yes. In addition to deals on Lewiston to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Lewiston to Washington, D.C.?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Lewiston to Washington, D.C..
Can I find deals for business class flights from Lewiston to Washington, D.C.?
Yes. Cheapflights offers flight deals from Lewiston to Washington, D.C. 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.?
Currently, November is the cheapest month in which you can book a flight from Lewiston, Idaho to Washington, D.C. (average of $229). Flying from Lewiston, Idaho to Washington, D.C. in December is currently the most expensive (average of $411). 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.

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$263+ Cheap flights from Lewiston, ID (LWS) to Washington, D.C. (WAS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/10. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Lewiston to Washington, D.C. with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Lewiston to Washington, D.C.

One-way flights from Lewiston to Washington, D.C.Search for one-way flight options from Lewiston to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated December 12, 2025.

Search for one-way flight options from Lewiston to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated December 12, 2025.

Find flight deals from Lewiston to Washington, D.C.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Cheapflights Fare Finder

Use the filters below to find and compare flights from Lewiston to Washington, D.C. that are best for you.

Compare providers for flights from Lewiston to Washington, D.C.

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Lewiston to Washington, D.C. in December.

Best time to book a flight from Lewiston to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Lewiston with our price prediction graph.

Cheapflights Insights

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

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

Related info for your journey

Find useful and relevant information for your journey from Lewiston to Washington, D.C.. 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.?

What are the most popular routes from Lewiston, Idaho to Washington, D.C.?

Can I find deals for flights from Lewiston to Washington, D.C. that include hotel bookings?

How can I find direct flights from Lewiston to Washington, D.C.?

Can I find deals for business class flights from Lewiston to Washington, D.C.?

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

Traveling to a place near Washington, D.C.?

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One-way flights from Lewiston to Washington, D.C.
Search for one-way flight options from Lewiston to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated December 12, 2025.