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Cheap flights from Idaho to Washington, D.C. from $116

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Idaho to Washington, D.C. departing on 10/26. 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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0 bags

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Find the cheapest flights from Idaho to Washington, D.C.

Cheap round-trip flights

Frontier Logo
11:53 am - 12:04 pmGEG-DCA
21h 11m1 stop
Frontier Logo
1:00 pm - 11:08 amDCA-GEG
25h 08m1 stop
$235Frontier
Find Deal
Sun, Oct 26 - Wed, Nov 5
Frontier Logo
11:53 am - 12:04 pmGEG-DCA
21h 11m1 stop
Frontier Logo
1:00 pm - 11:08 amDCA-GEG
25h 08m1 stop
$239Frontier
Find Deal
Sun, Oct 26 - Wed, Nov 5
American Airlines Logo
1:10 pm - 11:12 pmJAC-DCA
8h 02m1 stop
American Airlines Logo
6:59 am - 12:29 pmDCA-JAC
7h 30m1 stop
$249American Airlines
Find Deal
Wed, Oct 22 - Wed, Oct 29
American Airlines Logo
12:19 pm - 12:59 amJAC-DCA
10h 40m2 stops
American Airlines Logo
6:35 am - 12:29 pmDCA-JAC
7h 54m1 stop
$254American Airlines
Find Deal
Wed, Oct 22 - Wed, Oct 29
Multiple Airlines Logo
9:08 pm - 4:59 pmGEG-DCA
40h 51m2 stops
Multiple Airlines Logo
1:00 pm - 11:08 amDCA-GEG
25h 08m1 stop
$275Multiple Airlines
Find Deal
Sun, Oct 26 - Wed, Nov 5
Multiple Airlines Logo
9:08 pm - 4:30 amGEG-BWI
28h 22m1 stop
Multiple Airlines Logo
8:26 pm - 8:26 pmBWI-GEG
27h 00m2 stops
$277Multiple Airlines
Find Deal
Sun, Oct 26 - Wed, Nov 5
Delta Logo
9:00 am - 11:02 pmBOI-BWI
12h 02m2 stops
Delta Logo
6:00 am - 4:06 pmBWI-BOI
12h 06m2 stops
$294Delta
Find Deal
Wed, Oct 29 - Tue, Nov 4
Alaska Airlines Logo
7:10 pm - 4:42 pmBOI-IAD
19h 32m1 stop
Alaska Airlines Logo
5:40 pm - 11:33 amIAD-BOI
19h 53m1 stop
$296Alaska Airlines
Find Deal
Tue, Oct 21 - Tue, Oct 28
Delta Logo
1:39 pm - 11:18 pmBOI-IAD
7h 39m1 stop
Delta Logo
7:35 am - 4:06 pmIAD-BOI
10h 31m1 stop
$297Delta
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Tue, Oct 21 - Tue, Oct 28
Alaska Airlines Logo
6:00 pm - 5:39 amBOI-BWI
9h 39m1 stop
Alaska Airlines Logo
7:00 am - 3:34 pmBWI-BOI
10h 34m1 stop
$306Alaska Airlines
Find Deal
Mon, Nov 24 - Thu, Nov 27

American Airlines flights from Idaho to Washington, D.C.

Our best American Airlines deals on Idaho to Washington, D.C. flight tickets
American Airlines
Oct 22
JAC1:10 pmJackson Hole
8h 02m
1 stop
DCA11:12 pmWashington, D.C. Reagan-National
Oct 29
DCA6:59 amWashington, D.C. Reagan-National
7h 30m
1 stop
JAC12:29 pmJackson Hole
$249
Find similar
American Airlines
Oct 22
JAC12:19 pmJackson Hole
10h 40m
2 stops
DCA12:59 amWashington, D.C. Reagan-National
Oct 29
DCA6:35 amWashington, D.C. Reagan-National
7h 54m
1 stop
JAC12:29 pmJackson Hole
$254
Find similar
American Airlines
Oct 22
JAC12:19 pmJackson Hole
10h 40m
2 stops
DCA12:59 amWashington, D.C. Reagan-National
Oct 29
DCA5:00 amWashington, D.C. Reagan-National
9h 29m
2 stops
JAC12:29 pmJackson Hole
$259
Find similar

Alaska Airlines flights from Idaho to Washington, D.C.

Our best Alaska Airlines deals on Idaho to Washington, D.C. flight tickets
Alaska Airlines
Oct 21
BOI7:10 pmBoise Air Term. Gowen Fld
19h 32m
1 stop
IAD4:42 pmWashington, D.C. Dulles Intl
Oct 28
IAD5:40 pmWashington, D.C. Dulles Intl
19h 53m
1 stop
BOI11:33 amBoise Air Term. Gowen Fld
$296
Find similar
Alaska Airlines
Nov 24
BOI6:00 pmBoise Air Term. Gowen Fld
9h 39m
1 stop
BWI5:39 amBaltimore/Washington
Nov 27
BWI7:00 amBaltimore/Washington
10h 34m
1 stop
BOI3:34 pmBoise Air Term. Gowen Fld
$306
Find similar
Alaska Airlines
Oct 29
BOI4:57 pmBoise Air Term. Gowen Fld
11h 26m
1 stop
IAD6:23 amWashington, D.C. Dulles Intl
Nov 1
IAD7:43 amWashington, D.C. Dulles Intl
10h 34m
1 stop
BOI4:17 pmBoise Air Term. Gowen Fld
$308
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Idaho to Washington, D.C. 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 September 22, 2025.
Use the filters below to find and compare flights from Idaho to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SpokaneWashington, D.C.

GEG - DCA

GEGDCA

Spokane

Sun 10/26

11:53 am-12:04 pm

1 stop21h 11m

Washington, D.C. Reagan-National

Wed 11/5

1:00 pm-11:08 am

1 stop25h 08m

$235

SpokaneWashington, D.C.

GEG - DCA

GEGDCA

Spokane

Sun 10/26

11:53 am-12:04 pm

1 stop21h 11m

Washington, D.C. Reagan-National

Wed 11/5

1:00 pm-11:08 am

1 stop25h 08m

$239

JacksonWashington, D.C.

JAC - DCA

JACDCA

Jackson Hole

Wed 10/22

1:10 pm-11:12 pm

1 stop8h 02m

Washington, D.C. Reagan-National

Wed 10/29

6:59 am-12:29 pm

1 stop7h 30m

$249

JacksonWashington, D.C.

JAC - DCA

JACDCA

Jackson Hole

Wed 10/22

12:19 pm-12:59 am

2 stops10h 40m

Washington, D.C. Reagan-National

Wed 10/29

6:35 am-12:29 pm

1 stop7h 54m

$254

SpokaneWashington, D.C.

GEG - DCA

GEGDCA

Spokane

Sun 10/26

9:08 pm-4:59 pm

2 stops40h 51m

Washington, D.C. Reagan-National

Wed 11/5

1:00 pm-11:08 am

1 stop25h 08m

$275

SpokaneBaltimore

GEG - BWI

GEGBWI

Spokane

Sun 10/26

9:08 pm-4:30 am

1 stop28h 22m

Baltimore/Washington

Wed 11/5

8:26 pm-8:26 pm

2 stops27h 00m

$277

BoiseBaltimore

BOI - BWI

BOIBWI

Boise Air Term. Gowen Fld

Wed 10/29

9:00 am-11:02 pm

2 stops12h 02m

Baltimore/Washington

Tue 11/4

6:00 am-4:06 pm

2 stops12h 06m

$294

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Tue 10/21

7:10 pm-4:42 pm

1 stop19h 32m

Washington, D.C. Dulles Intl

Tue 10/28

5:40 pm-11:33 am

1 stop19h 53m

$296

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Tue 10/21

1:39 pm-11:18 pm

1 stop7h 39m

Washington, D.C. Dulles Intl

Tue 10/28

7:35 am-4:06 pm

1 stop10h 31m

$297

BoiseBaltimore

BOI - BWI

BOIBWI

Boise Air Term. Gowen Fld

Mon 11/24

6:00 pm-5:39 am

1 stop9h 39m

Baltimore/Washington

Thu 11/27

7:00 am-3:34 pm

1 stop10h 34m

$306

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from Idaho to Washington, D.C.

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 month to fly to Washington, D.C.?

The month of August is, on average, the cheapest month to fly to Washington, D.C. from Idaho, with most prices found around $293. If you’re not able to fly to Washington, D.C. in August, then February is your next best option. Flight prices from Idaho to Washington, D.C. during February average around $361.

What is the cheapest day to depart on your flight to Washington, D.C.?

On average, the least expensive day to fly to Washington, D.C. from Idaho is on a Saturday. momondo users have found tickets for Saturday departures for as low as $436. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Idaho to Washington, D.C. for around $551.

What is the cheapest time of day to depart on your flight to Washington, D.C.?

In the afternoon is the cheapest time of day to fly from Idaho to Washington, D.C. when you can find flight prices for as low as $433. Flying to Washington, D.C. in the afternoon is an ideal time because this is during off-peak travel hours. Try not to purchase tickets at noon because they tend to be around $547. Of course, these prices can vary depending on the time of year and what airport you fly to.

How far in advance should I book a flight to Washington, D.C.?

You are more likely to see cheaper flights to Washington, D.C. from Idaho when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. for around $446 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. from Idaho for as low as $370 on momondo.

Can stopping save me money on Idaho to Washington, D.C. flights?

You could potentially save up to 62% on your flight if you consider stops on a Idaho to Washington, D.C. flight.

Cheap Idaho to Washington, D.C. flight deals and tips

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

Direct flights

None
There are no direct flights from Idaho to Washington, D.C.. There are no popular flight routes from Idaho to Washington, D.C..
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  • When did momondo last update prices for flights from Idaho to Washington, D.C.?

    Prices for flights from Idaho to Washington, D.C. were last updated today.

  • How many operators does momondo search for flights from Idaho to Washington, D.C.?

  • How old do you have to be to fly from Idaho to Washington, D.C.?

    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 Idaho to Washington, D.C..

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

    The necessary travel and health documents for your Washington, D.C. trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Idaho to Washington, D.C.

Compare and see reviews for airlines that fly from Idaho to Washington, D.C. with momondo
Airline
Rating
Free Cancellation
Price
Alaska AirlinesPriceFrom $141Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
DeltaPriceFrom $249Free CancellationRating
7.9
7,971 reviews
Search Delta flights
American AirlinesPriceFrom $300Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $300Free CancellationRating
7.4
8,922 reviews
Search United Airlines flights
SouthwestPriceFrom $351Free CancellationRating
8.0
4,244 reviews
Search Southwest flights

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

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

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Idaho to Washington, D.C. for you.

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

Yes. momondo enables you to select and highlight flights to Washington, D.C. from Idaho with this policy.

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

momondo helps you find the best flight between Idaho and Washington, D.C. by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Yes momondo offers price alerts on flights to Washington, D.C. from Idaho. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Washington, D.C. trip

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Find better results for your trip to the United States

Fly into one of these airports located in Washington, D.C.

Airports listed have a maximum distance of 22.4 mi from Washington, D.C.
Washington, D.C. Reagan-National Airport
Washington, D.C. Dulles Intl Airport