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Cheap flights from Idaho to District of Columbia from $99

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 District of Columbia departing on 9/20. 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 District of Columbia

Cheap round-trip flights

Southwest Logo
5:30 am - 3:00 pmGEG-IAD
6h 30m1 stop
Southwest Logo
5:05 pm - 9:00 pmIAD-GEG
6h 55m1 stop
$198Southwest
Find Deal
Sat, Sep 6 - Sat, Sep 13
Hawaiian Airlines Logo
8:46 pm - 7:33 amBOI-IAD
8h 47m1 stop
Hawaiian Airlines Logo
9:00 am - 5:18 pmIAD-BOI
10h 18m1 stop
$210Hawaiian Airlines
Find Deal
Sat, Sep 13 - Wed, Sep 17
Delta Logo
7:45 pm - 6:01 amBOI-IAD
8h 16m1 stop
Delta Logo
7:35 am - 4:06 pmIAD-BOI
10h 31m1 stop
$211Delta
Find Deal
Thu, Oct 2 - Wed, Oct 15
Delta Logo
5:00 am - 3:25 pmGEG-DCA
7h 25m1 stop
Delta Logo
6:00 am - 11:22 amDCA-GEG
8h 22m1 stop
$211Delta
Find Deal
Sat, Sep 6 - Sat, Sep 13
American Airlines Logo
6:00 am - 4:47 pmGEG-IAD
7h 47m1 stop
American Airlines Logo
6:25 am - 11:45 amIAD-GEG
8h 20m1 stop
$211American Airlines
Find Deal
Sat, Sep 20 - Sat, Sep 27
American Airlines Logo
1:38 pm - 1:00 amBOI-DCA
9h 22m1 stop
American Airlines Logo
6:30 am - 12:27 pmDCA-BOI
7h 57m1 stop
$211American Airlines
Find Deal
Sat, Sep 13 - Wed, Sep 17
Alaska Airlines Logo
7:07 am - 9:59 pmBOI-DCA
12h 52m1 stop
Alaska Airlines Logo
5:06 pm - 12:08 amDCA-BOI
9h 02m1 stop
$226Alaska Airlines
Find Deal
Thu, Sep 18 - Tue, Sep 23
Alaska Airlines Logo
1:35 pm - 12:23 amBOI-IAD
8h 48m1 stop
Alaska Airlines Logo
7:43 am - 4:17 pmIAD-BOI
10h 34m1 stop
$242Alaska Airlines
Find Deal
Wed, Oct 22 - Wed, Oct 29
United Airlines Logo
2:45 pm - 12:44 amBOI-IAD
7h 59m1 stop
United Airlines Logo
7:00 am - 1:30 pmIAD-BOI
8h 30m1 stop
$265United Airlines
Find Deal
Mon, Aug 25 - Sun, Sep 7
United Airlines Logo
2:13 pm - 12:30 amBOI-IAD
8h 17m1 stop
United Airlines Logo
6:35 am - 11:31 amIAD-BOI
6h 56m1 stop
$272United Airlines
Find Deal
Tue, Sep 2 - Thu, Sep 4

Hawaiian Airlines flights from Idaho to District of Columbia

Our best Hawaiian Airlines deals on Idaho to District of Columbia flight tickets
Hawaiian Airlines
Sep 13
BOI8:46 pmBoise Air Term. Gowen Fld
8h 47m
1 stop
IAD7:33 amWashington, D.C. Dulles Intl
Sep 17
IAD9:00 amWashington, D.C. Dulles Intl
10h 18m
1 stop
BOI5:18 pmBoise Air Term. Gowen Fld
$210
Find similar
Hawaiian Airlines
Sep 9
GEG8:51 pmSpokane
7h 42m
1 stop
IAD7:33 amWashington, D.C. Dulles Intl
Sep 11
IAD6:09 pmWashington, D.C. Dulles Intl
9h 10m
1 stop
GEG12:19 amSpokane
$218
Find similar
Hawaiian Airlines
Sep 18
BOI7:17 pmBoise Air Term. Gowen Fld
10h 16m
1 stop
IAD7:33 amWashington, D.C. Dulles Intl
Sep 24
IAD7:00 amWashington, D.C. Dulles Intl
8h 48m
1 stop
BOI1:48 pmBoise Air Term. Gowen Fld
$226
Find similar

Delta flights from Idaho to District of Columbia

Our best Delta deals on Idaho to District of Columbia flight tickets
Delta
Oct 2
BOI7:45 pmBoise Air Term. Gowen Fld
8h 16m
1 stop
IAD6:01 amWashington, D.C. Dulles Intl
Oct 15
IAD7:35 amWashington, D.C. Dulles Intl
10h 31m
1 stop
BOI4:06 pmBoise Air Term. Gowen Fld
$211
Find similar
Delta
Oct 2
BOI7:45 pmBoise Air Term. Gowen Fld
13h 33m
2 stops
IAD11:18 amWashington, D.C. Dulles Intl
Oct 15
IAD7:35 amWashington, D.C. Dulles Intl
10h 31m
1 stop
BOI4:06 pmBoise Air Term. Gowen Fld
$216
Find similar
Delta
Oct 29
BOI9:00 amBoise Air Term. Gowen Fld
12h 30m
2 stops
IAD11:30 pmWashington, D.C. Dulles Intl
Nov 1
IAD9:00 amWashington, D.C. Dulles Intl
12h 07m
2 stops
BOI7:07 pmBoise Air Term. Gowen Fld
$221
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Idaho to District of Columbia 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 August 7, 2025.
Use the filters below to find and compare flights from Idaho to District of Columbia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

Sat 9/6

5:30 am-3:00 pm

1 stop6h 30m

Washington, D.C. Dulles Intl

Sat 9/13

5:05 pm-9:00 pm

1 stop6h 55m

$198

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Sat 9/13

8:46 pm-7:33 am

1 stop8h 47m

Washington, D.C. Dulles Intl

Wed 9/17

9:00 am-5:18 pm

1 stop10h 18m

$210

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Thu 10/2

7:45 pm-6:01 am

1 stop8h 16m

Washington, D.C. Dulles Intl

Wed 10/15

7:35 am-4:06 pm

1 stop10h 31m

$211

SpokaneWashington, D.C.

GEG - DCA

GEGDCA

Spokane

Sat 9/6

5:00 am-3:25 pm

1 stop7h 25m

Washington, D.C. Reagan-National

Sat 9/13

6:00 am-11:22 am

1 stop8h 22m

$211

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

Sat 9/20

6:00 am-4:47 pm

1 stop7h 47m

Washington, D.C. Dulles Intl

Sat 9/27

6:25 am-11:45 am

1 stop8h 20m

$211

BoiseWashington, D.C.

BOI - DCA

BOIDCA

Boise Air Term. Gowen Fld

Sat 9/13

1:38 pm-1:00 am

1 stop9h 22m

Washington, D.C. Reagan-National

Wed 9/17

6:30 am-12:27 pm

1 stop7h 57m

$211

BoiseWashington, D.C.

BOI - DCA

BOIDCA

Boise Air Term. Gowen Fld

Thu 9/18

7:07 am-9:59 pm

1 stop12h 52m

Washington, D.C. Reagan-National

Tue 9/23

5:06 pm-12:08 am

1 stop9h 02m

$226

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Wed 10/22

1:35 pm-12:23 am

1 stop8h 48m

Washington, D.C. Dulles Intl

Wed 10/29

7:43 am-4:17 pm

1 stop10h 34m

$242

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Mon 8/25

2:45 pm-12:44 am

1 stop7h 59m

Washington, D.C. Dulles Intl

Sun 9/7

7:00 am-1:30 pm

1 stop8h 30m

$265

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Tue 9/2

2:13 pm-12:30 am

1 stop8h 17m

Washington, D.C. Dulles Intl

Thu 9/4

6:35 am-11:31 am

1 stop6h 56m

$272

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 District of Columbia from

How to get the cheapest flight ticket from Idaho to District of Columbia

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 District of Columbia?

In general, August is the cheapest month to fly from Idaho to District of Columbia. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $344. If you don’t want to visit District of Columbia in August, then you should wait until February to fly from Idaho, when ticket prices are also cheap, with an average price of $361.

What is the cheapest day to depart on your flight to District of Columbia?

The cheapest day to depart on your flight to District of Columbia is on a Saturday when prices can be found for as low as $436. This is often the case because there is less demand to fly during this day of the week. On the other hand, Sunday is the most expensive day to depart from Idaho because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $551.

What is the cheapest time of day to depart on your flight to District of Columbia?

Flying to District of Columbia from Idaho in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $433 when looking at flights departing in the afternoon. Flights to District of Columbia are more costly at noon, with an average ticket price of $547. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

How far in advance should I book a flight to District of Columbia?

You are more likely to see cheaper flights to District of Columbia from Idaho when booking weeks ahead of your departure date. In general, you can expect to find flights to District of Columbia for around $438 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to District of Columbia from Idaho for as low as $354 on momondo.

Can stopping save me money on Idaho to District of Columbia flights?

You could potentially save up to 66% on your flight if you consider stops on a Idaho to District of Columbia flight.

Cheap Idaho to District of Columbia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Idaho to District of Columbia

Best Price Found

$99

Fastest flight time

5h 59m

Direct flights

None

Airports in District of Columbia

2 airports
The best one-way flight to District of Columbia from Idaho in the past 72 hours is $99. The best round-trip flight deal from Idaho to District of Columbia found on momondo in the last 72 hours is $198.
The fastest flight from Idaho to District of Columbia takes 5h 59m
There are no direct flights from Idaho to District of Columbia. Popular non-direct routes for this connection are Boise Air Term. Gowen Fld Airport - Washington, D.C. Dulles Intl Airport, Spokane Airport - Washington, D.C. Dulles Intl Airport and Boise Air Term. Gowen Fld Airport - Washington, D.C. Reagan-National Airport.
There are 2 airports near District of Columbia: Washington, D.C. Reagan-National (DCA), Washington, D.C. Dulles Intl (IAD)
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  • When did momondo last update prices for flights from Idaho to District of Columbia?

    Prices for flights from Idaho to District of Columbia are updated daily.

  • How many operators does momondo search for flights from Idaho to District of Columbia?

  • How old do you have to be to fly from Idaho to District of Columbia?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Idaho to District of Columbia.

  • What documentation or ID do you need to fly to District of Columbia?

    The required travel and health documents for your District of Columbia 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 District of Columbia. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Idaho to District of Columbia

Compare and see reviews for airlines that fly from Idaho to District of Columbia with momondo
Airline
Rating
Free Cancellation
Price
Alaska AirlinesPriceFrom $141Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
DeltaPriceFrom $292Free CancellationRating
8.0
7,985 reviews
Search Delta flights
American AirlinesPriceFrom $300Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $300Free CancellationRating
7.4
8,917 reviews
Search United Airlines flights
SouthwestPriceFrom $346Free CancellationRating
8.0
4,244 reviews
Search Southwest flights

Why use momondo?

Why should I use momondo to find a flight deal from Idaho to District of Columbia?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Idaho to District of Columbia. momondo saves you time and could save you money on your trip.

Can I find flights from Idaho to District of Columbia with flexible booking policies on momondo?

All flight searches from Idaho to District of Columbia on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Idaho to District of Columbia?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to District of Columbia from Idaho.

I’m not ready to book a flight from Idaho to District of Columbia right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to District of Columbia 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 District of Columbia trip

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