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.

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.

$417+ Cheap Flights from Lewiston, ID to Washington, D.C.

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

One-way

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 August 22, 2026.

Fri 10/239:15 am -

2 stops10h 40m

Deal found 8/20

$417

Sun 8/309:23 am -

2 stops10h 55m

Deal found 8/18

$510

Sun 8/3012:23 pm -

1 stop8h 16m

Deal found 8/18

$514

Sun 8/309:23 am -

2 stops9h 37m

Deal found 8/18

$640

Mon 10/129:15 am -

2 stops11h 08m

Deal found 8/21

$718

Cheapflights Fare Finder

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

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Cheapest one-way

LewistonWashington, D.C.

LWS Lewiston Nez Perce Rgnl - DCA Washington, D.C. Reagan-National

LWSDCA

Lewiston Nez Perce Rgnl

Fri 10/23

9:15 am-10:55 pm

2 stops10h 40m

$417

LewistonBaltimore

LWS Lewiston Nez Perce Rgnl - BWI Baltimore/Washington

LWSBWI

Lewiston Nez Perce Rgnl

Sun 8/30

9:23 am-11:18 pm

2 stops10h 55m

$510

Quickest one-way

LewistonWashington, D.C.

LWS Lewiston Nez Perce Rgnl - IAD Washington, D.C. Dulles Intl

LWSIAD

Lewiston Nez Perce Rgnl

Sun 8/30

12:23 pm-11:39 pm

1 stop8h 16m

$514

LewistonWashington, D.C.

LWS Lewiston Nez Perce Rgnl - DCA Washington, D.C. Reagan-National

LWSDCA

Lewiston Nez Perce Rgnl

Sun 8/30

9:23 am-10:00 pm

2 stops9h 37m

$640

LewistonBaltimore

LWS Lewiston Nez Perce Rgnl - BWI Baltimore/Washington

LWSBWI

Lewiston Nez Perce Rgnl

Mon 10/12

9:15 am-11:23 pm

2 stops11h 08m

$718

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Deals found on 8/20

Sorted by cheapest first

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.

LWS-WAS

LWS-DCA

LWS-BWI

LWS-IAD

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.

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

LWS-WAS

LWS-DCA

LWS-BWI

LWS-IAD

No data available for this route at this time. Please check back soon.

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.

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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 10/23. 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 August 22, 2026.

Search for one-way flight options from Lewiston to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated August 22, 2026.

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

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

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Related info for your journey

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.?

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

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.

Alternative routes for Lewiston to Washington, D.C.

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Complete your trip

Complete your trip to Washington, D.C. by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Lewiston to Washington, D.C. by cabin class

Find flights from Lewiston to Washington, D.C., based on your preferred cabin class, be it economy, premium economy, business, or first class.

Lewiston and Washington, D.C. flights

Browse other Lewiston and Washington, D.C. flight options. Last updated on August 22, 2026.

Other flights from Lewiston

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$417+ 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 10/23. 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 August 22, 2026.

Search for one-way flight options from Lewiston to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated August 22, 2026.

Cheapflights Fare Finder

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

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

Related info for your journey

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.?

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

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.

Alternative routes for Lewiston to Washington, D.C.

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Washington, D.C. by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Lewiston to Washington, D.C. by cabin class

Find flights from Lewiston to Washington, D.C., based on your preferred cabin class, be it economy, premium economy, business, or first class.

Lewiston and Washington, D.C. flights

Browse other Lewiston and Washington, D.C. flight options. Last updated on August 22, 2026.

Other flights from Lewiston

Browse through other flights departing from Lewiston. Flights are based on user searches made on Cheapflights and were last updated on August 22, 2026.

Popular flight searches

Check out other popular destinations found by fellow travelers in 2026

Other flights to Washington, D.C.

Explore flights to Washington, D.C. departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on August 22, 2026.

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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 August 22, 2026.