How long is the flight from Idaho to Washington, D.C.?

Airlines like Delta, United Airlines, and American Airlines fly from Idaho to Washington, D.C. in about 6h 44m. The time it takes to get you to your destination can typically vary by up to 1h 56m. There are 2076 mi between Idaho and Washington, D.C.. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

What are the cheapest airlines to fly from Idaho to Washington, D.C. one-way?

One-way options have recently been found by users for as low as $131 on Spirit Airlines. Other airlines that offer cheap prices include Frontier from $146 and Alaska Airlines from $153 one-way.

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 Idaho to Washington, D.C.?

When deciding which route to take from Idaho to Washington, D.C. consider Boise Air Term. Gowen Fld - Washington, D.C. Dulles Intl, Spokane - Washington, D.C. Reagan-National or Spokane - Washington, D.C. Dulles Intl as they are the most popular.

What are the most popular airlines that fly from Idaho to Washington, D.C.?

Alaska Airlines, Delta and United Airlines are the most popular airlines when flying from Idaho to Washington, D.C..

What is the cheapest month to fly from Idaho to Washington, D.C.?

Our data shows that August tends to be the cheapest month to fly to Washington, D.C. from Idaho. Users have commonly found prices around $419 for the month, but tickets can be as low as $204. Due to multiple factors, prepare for potentially higher prices in March.

Can I find deals for flights from Idaho to Washington, D.C. that include hotel bookings?

Yes. In addition to deals on Idaho to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Idaho 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 Idaho to Washington, D.C..

Can I find deals for business class flights from Idaho to Washington, D.C.?

Yes. Cheapflights offers flight deals from Idaho 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.

$118+ Cheap Flights from Idaho to Washington, D.C.

Q: How much does it cost to fly round-trip from Idaho to Washington, D.C.?

Airfare is below average for this route at the moment. Idaho to Washington, D.C. flights typically cost between $292 and $522 in September. The cheapest round-trip price found within the last 3 days was $236 on Frontier (Sep 25-Sep 28).

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

Round-trip from	$221 (United Airlines)
One-way from	$118 (Kiwi.com)
Popular in	March
Cheapest in	August
Average price	$427

From Idaho to Washington, D.C. (WAS)

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One-way flight from Idaho to Washington, D.C. (WAS)

Search Deals

Highest demand for flights based on searches. 3% potential increase in price ($15 potential increase over avg. RT price).

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Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).

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Average for round-trip flights in September 2025

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Find flight deals from Idaho to Washington, D.C.

Cheapest flights from Idaho to Washington, D.C.
Explore the most affordable flight options available from Idaho to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

Tue 10/77:20 pmBOI - BWI

1 stop7h 50mSouthwest

Tue 10/216:50 amBWI - BOI

1 stop8h 55mSouthwest

Deal found 9/12

$186

Tue 10/72:00 pmBOI - IAD

1 stop8h 40mDelta

Tue 10/217:35 amIAD - BOI

1 stop10h 31mDelta

Deal found 9/13

$213

Sat 10/181:38 pmGEG - IAD

1 stop6h 44mUnited Airlines

Tue 10/214:00 pmIAD - GEG

1 stop10h 15mUnited Airlines

Deal found 9/12

$221

Sat 10/181:12 pmGEG - DCA

1 stop7h 00mAmerican Airlines

Tue 10/216:59 amDCA - GEG

1 stop8h 21mAmerican Airlines

Deal found 9/12

$221

Mon 10/277:23 pmGEG - DCA

2 stops12h 50mDelta

Wed 11/56:00 amDCA - GEG

2 stops10h 05mDelta

Deal found 9/13

$231

Thu 9/2512:22 pmBOI - DCA

1 stop7h 37mFrontier

Sun 9/287:00 amDCA - BOI

1 stop6h 37mFrontier

Deal found 9/15

$236

Thu 10/301:12 pmGEG - BWI

1 stop7h 36mAmerican Airlines

Tue 11/47:29 amBWI - GEG

1 stop8h 03mAmerican Airlines

Deal found 9/12

$241

Mon 10/68:26 pmBOI - IAD

1 stop9h 07mAlaska Airlines

Wed 10/226:25 amIAD - BOI

1 stop8h 45mAlaska Airlines

Deal found 9/12

$246

Fri 10/171:15 pmGEG - IAD

1 stop8h 25mDelta

Tue 10/216:18 amIAD - GEG

1 stop9h 47mDelta

Deal found 9/13

$249

Sun 11/212:33 pmBOI - DCA

1 stop7h 26mFrontier

Sat 11/156:00 pmDCA - BOI

1 stop19h 43mFrontier

Deal found 9/15

$249

Fri 10/172:17 pmGEG - DCA

1 stop6h 08mDelta

Tue 10/214:59 pmDCA - GEG

1 stop10h 00mDelta

Deal found 9/13

$249

Fri 10/244:25 pmGEG - BWI

1 stop9h 35mSouthwest

Wed 10/296:15 amBWI - GEG

1 stop8h 50mSouthwest

Deal found 9/12

$251

Best flights from Idaho to Washington, D.C.
Discover carefully curated flight deals from Idaho to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 15, 2025.

Tue 10/72:00 pmBOI - IAD

1 stop8h 40mDelta

Tue 10/217:35 amIAD - BOI

1 stop10h 31mDelta

Deal found 9/13

$213

Sat 10/181:38 pmGEG - IAD

1 stop6h 44mUnited Airlines

Tue 10/214:00 pmIAD - GEG

1 stop10h 15mUnited Airlines

Deal found 9/12

$221

Sat 10/181:12 pmGEG - DCA

1 stop7h 00mAmerican Airlines

Tue 10/215:00 amDCA - GEG

2 stops9h 43mAmerican Airlines

Deal found 9/12

$226

Fri 10/244:25 pmGEG - BWI

1 stop9h 35mSouthwest

Wed 10/296:15 amBWI - GEG

1 stop8h 50mSouthwest

Deal found 9/12

$251

Tue 3/37:30 amGEG - IAD

1 stop7h 25mAlaska Airlines

Wed 3/47:00 amIAD - GEG

1 stop8h 50mAlaska Airlines

Deal found 9/12

$256

Mon 10/277:40 pmIDA - BWI

1 stop19h 36mMultiple Airlines

Thu 10/306:21 pmBWI - IDA

1 stop23h 53mMultiple Airlines

Deal found 9/14

$271

Tue 10/286:28 amBOI - IAD

1 stop8h 12mHawaiian Airlines

Tue 11/47:43 amIAD - BOI

1 stop10h 34mHawaiian Airlines

Deal found 9/13

$284

Mon 10/277:23 pmGEG - DCA

2 stops12h 50mDelta

Wed 11/54:59 pmDCA - GEG

1 stop8h 49mDelta

Deal found 9/13

$226

Thu 10/301:12 pmGEG - BWI

1 stop7h 36mAmerican Airlines

Tue 11/47:29 amBWI - GEG

1 stop8h 03mAmerican Airlines

Deal found 9/12

$241

Tue 3/36:30 amGEG - DCA

2 stops9h 47mDelta

Wed 3/44:40 pmDCA - GEG

1 stop9h 05mDelta

Deal found 9/12

$226

Fri 11/78:59 pmGEG - BWI

1 stop18h 17mAlaska Airlines

Fri 11/147:16 pmBWI - GEG

1 stop8h 06mAlaska Airlines

Deal found 9/12

$290

Tue 10/77:05 pmBOI - IAD

1 stop8h 31mUnited Airlines

Tue 10/216:30 amIAD - BOI

1 stop7h 09mUnited Airlines

Deal found 9/13

$297

Last-minute flights from Idaho to Washington, D.C.
Discover last-minute flight deals from Idaho to Washington, D.C.. Data last updated September 15, 2025 and is based on user searches.

Thu 9/2512:22 pmBOI - DCA

1 stop7h 37mFrontier

Sun 9/287:00 amDCA - BOI

1 stop6h 37mFrontier

Deal found 9/15

$236

Mon 10/68:26 pmBOI - IAD

1 stop9h 07mAlaska Airlines

Wed 10/226:25 amIAD - BOI

1 stop8h 45mAlaska Airlines

Deal found 9/12

$246

Tue 10/77:20 pmBOI - BWI

1 stop7h 50mSouthwest

Tue 10/216:50 amBWI - BOI

1 stop8h 55mSouthwest

Deal found 9/12

$186

Tue 10/72:00 pmBOI - IAD

1 stop8h 40mDelta

Tue 10/217:35 amIAD - BOI

1 stop10h 31mDelta

Deal found 9/13

$213

Thu 10/1612:03 pmGEG - DCA

1 stop25h 56mFrontier

Sat 10/187:00 amDCA - GEG

1 stop31h 08mFrontier

Deal found 9/12

$255

Fri 10/171:15 pmGEG - IAD

1 stop8h 25mDelta

Tue 10/216:18 amIAD - GEG

1 stop9h 47mDelta

Deal found 9/13

$249

Fri 10/172:17 pmGEG - DCA

1 stop6h 08mDelta

Tue 10/214:59 pmDCA - GEG

1 stop10h 00mDelta

Deal found 9/13

$249

Sat 10/181:38 pmGEG - IAD

1 stop6h 44mUnited Airlines

Tue 10/214:00 pmIAD - GEG

1 stop10h 15mUnited Airlines

Deal found 9/12

$221

Sat 10/181:12 pmGEG - DCA

1 stop7h 00mAmerican Airlines

Tue 10/216:59 amDCA - GEG

1 stop8h 21mAmerican Airlines

Deal found 9/12

$221

Fri 10/244:25 pmGEG - BWI

1 stop9h 35mSouthwest

Wed 10/296:15 amBWI - GEG

1 stop8h 50mSouthwest

Deal found 9/12

$251

Mon 10/277:23 pmGEG - DCA

2 stops12h 50mDelta

Wed 11/56:00 amDCA - GEG

2 stops10h 05mDelta

Deal found 9/13

$231

Thu 10/301:12 pmGEG - BWI

1 stop7h 36mAmerican Airlines

Tue 11/47:29 amBWI - GEG

1 stop8h 03mAmerican Airlines

Deal found 9/12

$241

One-way flights from Idaho to Washington, D.C.
Search for one-way flight options from Idaho to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated September 15, 2025.

Thu 10/2312:03 pmGEG - BWI

1 stop26h 41mFrontier

Deal found 9/13

$118

Sun 10/269:08 pmGEG - BWI

1 stop17h 08mMultiple Airlines

Deal found 9/14

$124

Wed 10/222:30 pmJAC - IAD

1 stop6h 52mUnited Airlines

Deal found 9/15

$125

Thu 10/239:08 pmGEG - BWI

1 stop17h 08mMultiple Airlines

Deal found 9/14

$129

Fri 10/39:26 pmBOI - BWI

1 stop29h 04mSpirit Airlines

Deal found 9/14

$131

Sun 11/29:04 pmGEG - BWI

1 stop28h 26mMultiple Airlines

Deal found 9/14

$132

Sun 10/2611:53 amGEG - BWI

2 stops25h 03mFrontier

Deal found 9/13

$141

Thu 11/612:03 pmGEG - BWI

2 stops28h 01mFrontier

Deal found 9/13

$143

Thu 12/257:00 amGEG - IAD

1 stop7h 43mAlaska Airlines

Deal found 9/15

$144

Tue 12/97:00 amGEG - DCA

1 stop11h 02mAlaska Airlines

Deal found 9/15

$144

Thu 11/1312:03 pmGEG - BWI

2 stops27h 32mFrontier

Deal found 9/13

$144

Sat 10/42:16 pmBOI - BWI

1 stop12h 14mSpirit Airlines

Deal found 9/14

$145

Cheapflights Fare Finder

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

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Tue 10/7

2:00 pm-12:40 am

1 stop8h 40m

Washington, D.C. Dulles Intl

Tue 10/21

7:35 am-4:06 pm

1 stop10h 31m

$213

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

Sat 10/18

1:38 pm-11:22 pm

1 stop6h 44m

Washington, D.C. Dulles Intl

Tue 10/21

4:00 pm-11:15 pm

1 stop10h 15m

$221

SpokaneWashington, D.C.

GEG - DCA

GEGDCA

Spokane

Sat 10/18

1:12 pm-11:12 pm

1 stop7h 00m

Washington, D.C. Reagan-National

Tue 10/21

5:00 am-11:43 am

2 stops9h 43m

$226

SpokaneWashington, D.C.

GEG - DCA

GEGDCA

Spokane

Mon 10/27

7:23 pm-11:13 am

2 stops12h 50m

Washington, D.C. Reagan-National

Wed 11/5

4:59 pm-10:48 pm

1 stop8h 49m

$226

SpokaneWashington, D.C.

GEG - DCA

GEGDCA

Spokane

Tue 3/3

6:30 am-7:17 pm

2 stops9h 47m

Washington, D.C. Reagan-National

Wed 3/4

4:40 pm-10:45 pm

1 stop9h 05m

$226

SpokaneBaltimore

GEG - BWI

GEGBWI

Spokane

Thu 10/30

1:12 pm-11:48 pm

1 stop7h 36m

Baltimore/Washington

Tue 11/4

7:29 am-12:32 pm

1 stop8h 03m

$241

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

Fri 10/17

1:15 pm-12:40 am

1 stop8h 25m

Washington, D.C. Dulles Intl

Tue 10/21

6:15 am-12:01 pm

1 stop8h 46m

$249

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

Fri 10/24

11:15 pm-10:11 am

1 stop7h 56m

Washington, D.C. Dulles Intl

Mon 11/3

6:15 am-12:01 pm

1 stop8h 46m

$249

SpokaneWashington, D.C.

GEG - DCA

GEGDCA

Spokane

Fri 10/17

2:17 pm-11:25 pm

1 stop6h 08m

Washington, D.C. Reagan-National

Tue 10/21

4:59 pm-11:59 pm

1 stop10h 00m

$249

SpokaneBaltimore

GEG - BWI

GEGBWI

Spokane

Fri 10/24

4:25 pm-5:00 am

1 stop9h 35m

Baltimore/Washington

Wed 10/29

6:15 am-12:05 pm

1 stop8h 50m

$251

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 60 results

...

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

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Idaho with our price prediction graph.

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.

Cheapflights Insights

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

What is the cheapest month to book a flight from Idaho to Washington, D.C.?

Currently, August is the cheapest month in which you can book a flight from Idaho to Washington, D.C. (average of $292). Flying from Idaho to Washington, D.C. in April is currently the most expensive (average of $337). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ID to WAS?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Idaho to Washington, D.C. as you normally would.

How much does it cost to fly round-trip from Idaho to Washington, D.C.?

Related info for your journey

How long is the flight from Idaho to Washington, D.C.?
Airlines like Delta, United Airlines, and American Airlines fly from Idaho to Washington, D.C. in about 6h 44m. The time it takes to get you to your destination can typically vary by up to 1h 56m. There are 2076 mi between Idaho and Washington, D.C.. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.
What are the cheapest airlines to fly from Idaho to Washington, D.C. one-way?
One-way options have recently been found by users for as low as $131 on Spirit Airlines. Other airlines that offer cheap prices include Frontier from $146 and Alaska Airlines from $153 one-way.
What are the most popular routes from Idaho to Washington, D.C.?
When deciding which route to take from Idaho to Washington, D.C. consider Boise Air Term. Gowen Fld - Washington, D.C. Dulles Intl, Spokane - Washington, D.C. Reagan-National or Spokane - Washington, D.C. Dulles Intl as they are the most popular.
Can I find deals for flights from Idaho to Washington, D.C. that include hotel bookings?
Yes. In addition to deals on Idaho to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Idaho 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 Idaho to Washington, D.C..
Can I find deals for business class flights from Idaho to Washington, D.C.?
Yes. Cheapflights offers flight deals from Idaho 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.
What is the cheapest month to book a flight from Idaho to Washington, D.C.?
Currently, August is the cheapest month in which you can book a flight from Idaho to Washington, D.C. (average of $292). Flying from Idaho to Washington, D.C. in April is currently the most expensive (average of $337). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Woodbridge

Alexandria

Arlington

Tysons

Silver Spring

Springfield

Gaithersburg

Fredericksburg

Linthicum Heights

Fairfax

Falls Church

Owings Mills

Manassas

Rockville

Hanover

Oxon Hill

Laurel

Towson

Dundalk

National Harbor

Browse thousands of different options on Cheapflights for your next trip

Top 5 airlines flying from Idaho to Washington, D.C.

Airline	Cheapest	Average	Flexibility	On-time
Alaska Airlines	Cheapest$141	Average$417	FlexibilityNo cancel fee	On-time75%
Delta	Cheapest$249	Average$430	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$300	Average$522	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$300	Average$595	FlexibilityNo cancel fee	On-time69%
Southwest	Cheapest$346	Average$493	FlexibilityNo cancel fee	On-time63%

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$118+ Cheap flights from Idaho 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 Idaho 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 Idaho to Washington, D.C.

Keep the following information in mind while searching for Idaho to Washington, D.C. flight deals. Data was last updated September 15, 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Idaho to Washington, D.C.

Cheapest flights from Idaho to Washington, D.C.Explore the most affordable flight options available from Idaho to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

Explore the most affordable flight options available from Idaho to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

Cheapflights Fare Finder

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

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

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Idaho with our price prediction graph.

Cheapflights Insights

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

What is the cheapest month to book a flight from Idaho to Washington, D.C.?

What is the cheapest time of day to fly from ID to WAS?

Find hourly flight availability from Idaho to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 15, 2025.

How much does it cost to fly round-trip from Idaho to Washington, D.C.?

Related info for your journey

Find useful and relevant information for your journey from Idaho to Washington, D.C.. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

How long is the flight from Idaho to Washington, D.C.?

What are the cheapest airlines to fly from Idaho to Washington, D.C. one-way?

What are the most popular routes from Idaho to Washington, D.C.?

Can I find deals for flights from Idaho to Washington, D.C. that include hotel bookings?

How can I find direct flights from Idaho to Washington, D.C.?

Can I find deals for business class flights from Idaho to Washington, D.C.?

What is the cheapest month to book a flight from Idaho to Washington, D.C.?

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

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Alternative routes for Idaho to Washington, D.C.

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Top 5 airlines flying from Idaho to Washington, D.C.

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Cheapest flights from Idaho to Washington, D.C.
Explore the most affordable flight options available from Idaho to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.