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Cheap flights from Idaho to Washington, D.C. from $144

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 10/28. 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

United Airlines Logo
2:30 pm - 11:22 pmJAC-IAD
6h 52m1 stop
United Airlines Logo
3:59 pm - 8:37 pmIAD-JAC
6h 38m1 stop
$249United Airlines
Find Deal
Wed, Oct 22 - Wed, Oct 29
Frontier Logo
12:28 pm - 11:59 amBOI-IAD
21h 31m2 stops
Frontier Logo
9:00 am - 11:43 amIAD-BOI
52h 43m2 stops
$253Frontier
Find Deal
Fri, Oct 17 - Tue, Oct 21
Alaska Airlines Logo
5:38 pm - 12:23 amBOI-IAD
28h 45m1 stop
Alaska Airlines Logo
6:25 am - 1:10 pmIAD-BOI
8h 45m1 stop
$293Alaska Airlines
Find Deal
Fri, Oct 17 - Tue, Oct 21
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
American Airlines Logo
1:33 pm - 10:51 pmBOI-IAD
7h 18m1 stop
American Airlines Logo
6:11 am - 12:45 pmIAD-BOI
8h 34m1 stop
$297American Airlines
Find Deal
Tue, Oct 21 - Tue, Oct 28
Delta Logo
2:00 pm - 12:40 amBOI-IAD
8h 40m1 stop
Delta Logo
6:18 am - 4:06 pmIAD-BOI
11h 48m2 stops
$302Delta
Find Deal
Tue, Oct 21 - Tue, Oct 28
Delta Logo
11:12 am - 11:39 pmBOI-IAD
10h 27m2 stops
Delta Logo
6:00 am - 4:05 pmIAD-BOI
12h 05m2 stops
$307Delta
Find Deal
Tue, Oct 28 - Tue, Nov 11
Hawaiian Airlines Logo
5:00 am - 5:55 pmGEG-IAD
9h 55m1 stop
Hawaiian Airlines Logo
5:51 pm - 11:37 pmIAD-GEG
8h 46m1 stop
$316Hawaiian Airlines
Find Deal
Tue, Mar 3 - Wed, Mar 4
American Airlines Logo
1:11 pm - 10:32 pmJAC-IAD
7h 21m1 stop
American Airlines Logo
6:04 am - 12:14 pmIAD-JAC
8h 10m1 stop
$334American Airlines
Find Deal
Thu, Nov 13 - Tue, Nov 25
Hawaiian Airlines Logo
7:34 pm - 12:23 amGEG-IAD
25h 49m1 stop
Hawaiian Airlines Logo
5:40 pm - 11:56 pmIAD-GEG
9h 16m1 stop
$389Hawaiian Airlines
Find Deal
Thu, Oct 16 - Thu, Oct 30

Hawaiian Airlines flights from Idaho to Washington, D.C. Dulles Intl Airport

Our best Hawaiian Airlines deals on Idaho to Washington, D.C. Dulles Intl Airport flight tickets
Hawaiian Airlines
Mar 3
GEG5:00 amSpokane
9h 55m
1 stop
IAD5:55 pmWashington, D.C. Dulles Intl
Mar 4
IAD5:51 pmWashington, D.C. Dulles Intl
8h 46m
1 stop
GEG11:37 pmSpokane
$316
Find similar
Hawaiian Airlines
Oct 16
GEG7:34 pmSpokane
25h 49m
1 stop
IAD12:23 amWashington, D.C. Dulles Intl
Oct 30
IAD5:40 pmWashington, D.C. Dulles Intl
9h 16m
1 stop
GEG11:56 pmSpokane
$389
Find similar
Hawaiian Airlines
Mar 10
BOI5:30 amBoise Air Term. Gowen Fld
10h 25m
1 stop
IAD5:55 pmWashington, D.C. Dulles Intl
Mar 11
IAD7:00 amWashington, D.C. Dulles Intl
8h 45m
1 stop
BOI1:45 pmBoise Air Term. Gowen Fld
$390
Find similar

Alaska Airlines flights from Idaho to Washington, D.C. Dulles Intl Airport

Our best Alaska Airlines deals on Idaho to Washington, D.C. Dulles Intl Airport flight tickets
Alaska Airlines
Oct 17
BOI5:38 pmBoise Air Term. Gowen Fld
28h 45m
1 stop
IAD12:23 amWashington, D.C. Dulles Intl
Oct 21
IAD6:25 amWashington, D.C. Dulles Intl
8h 45m
1 stop
BOI1:10 pmBoise Air Term. Gowen Fld
$293
Find similar
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
Oct 14
GEG1:31 pmSpokane
7h 52m
1 stop
IAD12:23 amWashington, D.C. Dulles Intl
Oct 21
IAD6:25 amWashington, D.C. Dulles Intl
9h 12m
1 stop
GEG12:37 pmSpokane
$298
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from 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 September 23, 2025.
Use the filters below to find and compare flights from Idaho to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

JacksonWashington, D.C.

JAC - IAD

JACIAD

Jackson Hole

Wed 10/22

2:30 pm-11:22 pm

1 stop6h 52m

Washington, D.C. Dulles Intl

Wed 10/29

3:59 pm-8:37 pm

1 stop6h 38m

$249

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Fri 10/17

12:28 pm-11:59 am

2 stops21h 31m

Washington, D.C. Dulles Intl

Tue 10/21

9:00 am-11:43 am

2 stops52h 43m

$253

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Fri 10/17

5:38 pm-12:23 am

1 stop28h 45m

Washington, D.C. Dulles Intl

Tue 10/21

6:25 am-1:10 pm

1 stop8h 45m

$293

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

1:33 pm-10:51 pm

1 stop7h 18m

Washington, D.C. Dulles Intl

Tue 10/28

6:11 am-12:45 pm

1 stop8h 34m

$297

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Tue 10/21

2:00 pm-12:40 am

1 stop8h 40m

Washington, D.C. Dulles Intl

Tue 10/28

6:18 am-4:06 pm

2 stops11h 48m

$302

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Tue 10/28

11:12 am-11:39 pm

2 stops10h 27m

Washington, D.C. Dulles Intl

Tue 11/11

6:00 am-4:05 pm

2 stops12h 05m

$307

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

Tue 3/3

5:00 am-5:55 pm

1 stop9h 55m

Washington, D.C. Dulles Intl

Wed 3/4

5:51 pm-11:37 pm

1 stop8h 46m

$316

JacksonWashington, D.C.

JAC - IAD

JACIAD

Jackson Hole

Thu 11/13

1:11 pm-10:32 pm

1 stop7h 21m

Washington, D.C. Dulles Intl

Tue 11/25

6:04 am-12:14 pm

1 stop8h 10m

$334

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

Thu 10/16

7:34 pm-12:23 am

1 stop25h 49m

Washington, D.C. Dulles Intl

Thu 10/30

5:40 pm-11:56 pm

1 stop9h 16m

$389

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How to get the cheapest flight ticket from 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 month to fly to Washington, D.C. Dulles Intl Airport?

In general, February is the cheapest month to fly from Idaho to Washington, D.C. Dulles Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $318. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of February, then flying in April is also cheap. Prices for this month can be found on momondo for an average of $365.

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

Our data shows that Saturday is the least expensive day to fly to Washington, D.C. Dulles Intl Airport. Tickets to fly out on this day can be as low as $482. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Idaho to Washington, D.C. Dulles Intl Airport for around $648.

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

Flying to Washington, D.C. Dulles Intl Airport from Idaho in the evening is the least expensive time of day to depart. momondo users have found prices as low as $466 when looking at flights departing in the evening. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $537 on average. Flights to Washington, D.C. Dulles Intl Airport from Idaho in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

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

Direct flights

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

    Prices for flights from Idaho to Washington, D.C. Dulles Intl Airport are updated daily.

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Idaho to Washington, D.C. Dulles Intl Airport.

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

    The required travel and health documents for your Washington, D.C. Dulles Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Washington, D.C. Dulles Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Idaho to Washington, D.C. Dulles Intl Airport

Compare and see reviews for airlines that fly from Idaho to Washington, D.C. Dulles Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
Alaska AirlinesPriceFrom $141Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
DeltaPriceFrom $290Free CancellationRating
7.9
7,974 reviews
Search Delta flights
United AirlinesPriceFrom $300Free CancellationRating
7.4
8,926 reviews
Search United Airlines flights
SouthwestPriceFrom $363Free 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
Winchester
Woodbridge
Waldorf
Tysons
Laurel
Colonial Beach
Silver Spring
Fredericksburg
Harpers Ferry
Towson
Rockville
Manassas
Reston
Fairfax
Glen Burnie
Gaithersburg

Why use momondo?

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

Finding the right flight to Washington, D.C. from Idaho 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 Idaho to Washington, D.C. with flexible booking policies on momondo?

Yes. All flights to Washington, D.C. from Idaho on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Idaho to Washington, D.C..

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.

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