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Cheap flights from Lewiston, Idaho to Washington, D.C. from $341

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Lewiston, Idaho to Washington, D.C. departing on 8/25. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Lewiston, Idaho to Washington, D.C.

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
12:30 pm - 11:46 pm
LWS
-
IAD
8h 16m
1 stop
Delta Logo
7:15 am - 11:46 am
IAD
-
LWS
7h 31m
1 stop
$516Delta
Tue, Oct 20 - Tue, Nov 10
Delta Logo
12:30 pm - 12:05 am
LWS
-
IAD
8h 35m
2 stops
Delta Logo
7:15 am - 11:46 am
IAD
-
LWS
7h 31m
1 stop
$522Delta
Tue, Oct 20 - Wed, Nov 4
Delta Logo
12:30 pm - 11:46 pm
LWS
-
IAD
8h 16m
1 stop
Delta Logo
7:15 am - 11:46 am
IAD
-
LWS
7h 31m
1 stop
$526Delta
Tue, Oct 20 - Mon, Nov 9
Delta Logo
12:30 pm - 12:05 am
LWS
-
IAD
8h 35m
2 stops
Delta Logo
11:05 am - 10:49 pm
IAD
-
LWS
14h 44m
2 stops
$527Delta
Tue, Oct 20 - Tue, Nov 10
Delta Logo
12:30 pm - 12:05 am
LWS
-
IAD
8h 35m
2 stops
Delta Logo
7:15 am - 11:46 am
IAD
-
LWS
7h 31m
1 stop
$532Delta
Tue, Oct 20 - Sun, Nov 8
Delta Logo
12:30 pm - 11:46 pm
LWS
-
IAD
8h 16m
1 stop
Delta Logo
7:15 am - 11:46 am
IAD
-
LWS
7h 31m
1 stop
$536Delta
Sat, Oct 17 - Mon, Nov 9
Delta Logo
12:30 pm - 12:05 am
LWS
-
IAD
8h 35m
2 stops
Delta Logo
11:05 am - 10:49 pm
IAD
-
LWS
14h 44m
2 stops
$537Delta
Sat, Oct 17 - Tue, Nov 10
Delta Logo
12:30 pm - 12:05 am
LWS
-
IAD
8h 35m
2 stops
Delta Logo
7:15 am - 11:46 am
IAD
-
LWS
7h 31m
1 stop
$542Delta
Sat, Oct 17 - Sun, Nov 8
Delta Logo
6:25 am - 11:51 pm
LWS
-
IAD
14h 26m
1 stop
Delta Logo
7:15 am - 11:46 am
IAD
-
LWS
7h 31m
1 stop
$555Delta
Sun, Oct 18 - Wed, Nov 4
Delta Logo
6:25 am - 11:51 pm
LWS
-
IAD
14h 26m
1 stop
Delta Logo
11:05 am - 10:49 pm
IAD
-
LWS
14h 44m
2 stops
$561Delta
Sun, Oct 18 - Tue, Nov 10

Delta flights from Lewiston, Idaho to Washington, D.C. Dulles Intl Airport

Our best Delta deals on Lewiston, Idaho to Washington, D.C. Dulles Intl Airport flight tickets
Delta
Oct 20
LWS12:30 pmLewiston Nez Perce Rgnl
8h 16m
1 stop
IAD11:46 pmWashington, D.C. Dulles Intl
Nov 10
IAD7:15 amWashington, D.C. Dulles Intl
7h 31m
1 stop
LWS11:46 amLewiston Nez Perce Rgnl
$516
Delta
Oct 20
LWS12:30 pmLewiston Nez Perce Rgnl
8h 35m
2 stops
IAD12:05 amWashington, D.C. Dulles Intl
Nov 4
IAD7:15 amWashington, D.C. Dulles Intl
7h 31m
1 stop
LWS11:46 amLewiston Nez Perce Rgnl
$522
Delta
Oct 20
LWS12:30 pmLewiston Nez Perce Rgnl
8h 16m
1 stop
IAD11:46 pmWashington, D.C. Dulles Intl
Nov 9
IAD7:15 amWashington, D.C. Dulles Intl
7h 31m
1 stop
LWS11:46 amLewiston Nez Perce Rgnl
$526

momondo Fare Finder

 
Customize your flight search to find flights from Lewiston, Idaho to Washington, D.C. Dulles Intl Airport 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, momondo users made 832,500 searches. Data last updated May 27, 2026.
Use the filters below to find and compare flights from Lewiston, Idaho to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

LewistonWashington, D.C.

LWS - IAD

LWSIAD

Lewiston Nez Perce Rgnl

Tue 10/20

12:30 pm-11:46 pm

1 stop8h 16m

Washington, D.C. Dulles Intl

Tue 11/10

7:15 am-11:46 am

1 stop7h 31m

$516

LewistonWashington, D.C.

LWS - IAD

LWSIAD

Lewiston Nez Perce Rgnl

Tue 10/20

12:30 pm-12:05 am

2 stops8h 35m

Washington, D.C. Dulles Intl

Wed 11/4

7:15 am-11:46 am

1 stop7h 31m

$522

LewistonWashington, D.C.

LWS - IAD

LWSIAD

Lewiston Nez Perce Rgnl

Tue 10/20

12:30 pm-11:46 pm

1 stop8h 16m

Washington, D.C. Dulles Intl

Mon 11/9

7:15 am-11:46 am

1 stop7h 31m

$526

LewistonWashington, D.C.

LWS - IAD

LWSIAD

Lewiston Nez Perce Rgnl

Tue 10/20

12:30 pm-12:05 am

2 stops8h 35m

Washington, D.C. Dulles Intl

Tue 11/10

11:05 am-10:49 pm

2 stops14h 44m

$527

LewistonWashington, D.C.

LWS - IAD

LWSIAD

Lewiston Nez Perce Rgnl

Tue 10/20

12:30 pm-12:05 am

2 stops8h 35m

Washington, D.C. Dulles Intl

Sun 11/8

7:15 am-11:46 am

1 stop7h 31m

$532

LewistonWashington, D.C.

LWS - IAD

LWSIAD

Lewiston Nez Perce Rgnl

Sat 10/17

12:30 pm-11:46 pm

1 stop8h 16m

Washington, D.C. Dulles Intl

Mon 11/9

7:15 am-11:46 am

1 stop7h 31m

$536

LewistonWashington, D.C.

LWS - IAD

LWSIAD

Lewiston Nez Perce Rgnl

Sat 10/17

12:30 pm-12:05 am

2 stops8h 35m

Washington, D.C. Dulles Intl

Tue 11/10

11:05 am-10:49 pm

2 stops14h 44m

$537

LewistonWashington, D.C.

LWS - IAD

LWSIAD

Lewiston Nez Perce Rgnl

Sat 10/17

12:30 pm-12:05 am

2 stops8h 35m

Washington, D.C. Dulles Intl

Sun 11/8

7:15 am-11:46 am

1 stop7h 31m

$542

LewistonWashington, D.C.

LWS - IAD

LWSIAD

Lewiston Nez Perce Rgnl

Sun 10/18

6:25 am-11:51 pm

1 stop14h 26m

Washington, D.C. Dulles Intl

Wed 11/4

7:15 am-11:46 am

1 stop7h 31m

$555

LewistonWashington, D.C.

LWS - IAD

LWSIAD

Lewiston Nez Perce Rgnl

Sun 10/18

6:25 am-11:51 pm

1 stop14h 26m

Washington, D.C. Dulles Intl

Tue 11/10

11:05 am-10:49 pm

2 stops14h 44m

$561

Flights are sorted by cheapest round-trip flights first.

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See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from Lewiston, Idaho to Washington, D.C. Dulles Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Lewiston Nez Perce Rgnl to Washington, D.C. Dulles Intl?

Delta is the most popular carrier operating from Lewiston Nez Perce Rgnl to Washington, D.C. Dulles Intl

What airlines fly to Washington, D.C. Dulles Intl Airport?

Delta, United Airlines and Alaska Airlines are the top three most popular airlines that fly to Washington, D.C. Dulles Intl Airport from Lewiston, Idaho according to our data. Delta is the first choice among our users, with 52% of people opting to fly with this airline when traveling to Washington, D.C. Dulles Intl Airport. Keep in mind that there are 3 different airlines that fly to Washington, D.C. Dulles Intl Airport on a routine basis, so you have a few additional options to choose from.

When to book flights from Lewiston, Idaho to Washington, D.C. Dulles Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Lewiston, Idaho to Washington, D.C. Dulles Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Lewiston, Idaho to Washington, D.C. Dulles Intl Airport (LWS to IAD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Lewiston, Idaho to Washington, D.C. Dulles Intl Airport

Fastest flight time

8h 15m

Direct flights

None
The fastest flight from Lewiston, Idaho to Washington, D.C. Dulles Intl Airport takes 8h 15m
There are no direct flights from Lewiston, Idaho to Washington, D.C. Dulles Intl Airport. There are no popular flight routes from Lewiston, Idaho to Washington, D.C. Dulles Intl Airport.
Search flight deals

Frequently asked questions about flying from Lewiston, Idaho to Washington, D.C. Dulles Intl Airport

  • How far is Lewiston Nez Perce Rgnl to Washington, D.C. Dulles Intl by plane?

    The straight-line distance from Lewiston Nez Perce Rgnl to Washington, D.C. Dulles Intl is 2049.6 mi. In terms of flight time, this usually takes a little over 8h 15m.

  • When did momondo last update prices for flights from Lewiston Nez Perce Rgnl Airport to Washington, D.C. Dulles Intl Airport?

    Prices for flights from Lewiston Nez Perce Rgnl Airport to Washington, D.C. Dulles Intl Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Lewiston Nez Perce Rgnl Airport to Washington, D.C. Dulles Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lewiston Nez Perce Rgnl Airport to Washington, D.C. Dulles Intl Airport.

  • What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?

    The travel and health documents required for your trip to Washington, D.C. Dulles Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington, D.C. Dulles Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
National Harbor
Gettysburg
Arlington
Winchester
Waldorf
Woodbridge
Laurel
Gaithersburg
Colonial Beach
Fredericksburg
Silver Spring
Rockville
Towson
Manassas
Sterling
Linthicum Heights
Tysons
Springfield
Bethesda

Why use momondo?

Why should I use momondo to find a flight deal from Lewiston to Washington, D.C.?

Finding the right flight to Washington, D.C. from Lewiston is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Washington, D.C. quick and easy, saving you time and money.

Can I find flights from Lewiston to Washington, D.C. with flexible booking policies on momondo?

momondo does allow users to show only those flights to Washington, D.C. from Lewiston which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Lewiston to Washington, D.C.?

Once all potential Lewiston to Washington, D.C. flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Lewiston to Washington, D.C. right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Lewiston to Washington, D.C. flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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