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

United Airlines, Delta, and Alaska Airlines can get you from Washington, D.C. to Idaho in just under 8h 18m. Your travel time can differ by up to 6h 09m. Airlines will cover a distance of 1745 mi. This flight may include one or multiple stops.

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

To fly one-way, consider booking your trip with American Airlines, which is currently one of the cheapest options available, starting at $148. United Airlines flights start at $150 while deals on Delta start at $150 one-way.

In terms of precipitation, rainfall in Idaho ranges from 0.2 - 1.6 inches per month. December is typically the wettest month, when rainfall can reach 1.6 in. August is typically the driest time to visit Idaho when rainfall is around 0.2 in.

If weather is an important factor for your trip to Idaho, 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 75.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 30.2 F).

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

When deciding which route to take from Washington, D.C. to Idaho consider Washington, D.C. Dulles Intl - Jackson Hole, Washington, D.C. Reagan-National - Jackson Hole or Baltimore/Washington - Jackson Hole as they are the most popular.

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

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

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

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

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

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to Idaho.

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

Yes. Cheapflights offers flight deals from Washington, D.C. to Idaho by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$78+ Flights from Washington, D.C. to Idaho

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

Airfare is below average for this route at the moment. Washington, D.C. to Idaho flights typically cost between $506 and $893 in January. The cheapest round-trip price found within the last 3 days was $276 on Delta (Jan 21-Jan 27).

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

Cheapest flights from Washington, D.C. to Idaho
Explore the most affordable flight options available from Washington, D.C. to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

Wed 12/245:31 pmIAD - BOI

1 stop7h 28mUnited Airlines

Thu 1/16:55 pmBOI - IAD

1 stop8h 27mUnited Airlines

Deal found 12/15

$547

Wed 12/1712:19 pmBWI - JAC

2 stops11h 10mDelta

Wed 12/242:31 pmJAC - BWI

1 stop8h 04mDelta

Deal found 12/16

$549

Thu 12/258:20 amIAD - GEG

1 stop7h 25mUnited Airlines

Wed 12/314:00 pmGEG - IAD

2 stops22h 30mUnited Airlines

Deal found 12/17

$583

Wed 12/249:47 amIAD - GEG

1 stop8h 32mUnited Airlines

Thu 1/15:05 amGEG - IAD

1 stop7h 29mUnited Airlines

Deal found 12/17

$592

Thu 12/188:15 amBWI - JAC

1 stop9h 09mUnited Airlines

Sun 12/216:06 pmJAC - BWI

1 stop9h 18mUnited Airlines

Deal found 12/16

$609

Wed 12/247:40 amIAD - GEG

2 stops17h 20mSouthwest

Thu 1/16:05 amGEG - IAD

1 stop6h 40mSouthwest

Deal found 12/17

$630

Sat 12/277:05 amIAD - GEG

1 stop10h 46mDelta

Thu 1/82:00 pmGEG - IAD

1 stop6h 57mDelta

Deal found 12/16

$643

Mon 12/2910:44 amBWI - JAC

2 stops12h 08mUnited Airlines

Wed 12/314:14 pmJAC - BWI

2 stops14h 03mUnited Airlines

Deal found 12/17

$666

Mon 12/227:35 pmBWI - BOI

1 stop7h 50mSouthwest

Mon 1/55:40 pmBOI - BWI

1 stop9h 30mSouthwest

Deal found 12/15

$667

Sat 12/208:15 amBWI - JAC

1 stop9h 09mUnited Airlines

Mon 12/222:30 pmJAC - BWI

1 stop6h 46mUnited Airlines

Deal found 12/17

$671

Sat 12/206:00 amIAD - JAC

1 stop9h 21mDelta

Sat 12/2712:50 pmJAC - IAD

1 stop8h 28mDelta

Deal found 12/16

$679

Sat 12/206:00 amDCA - JAC

1 stop9h 21mDelta

Sat 12/277:00 amJAC - DCA

1 stop7h 01mDelta

Deal found 12/16

$679

Best flights from Washington, D.C. to Idaho
Discover carefully curated flight deals from Washington, D.C. to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 18, 2025.

Mon 2/22:24 pmIAD - JAC

1 stop8h 18mUnited Airlines

Wed 2/42:40 pmJAC - IAD

1 stop6h 42mUnited Airlines

Deal found 12/17

$280

Tue 1/136:00 amBWI - BOI

1 stop8h 46mDelta

Tue 1/203:03 pmBOI - BWI

1 stop6h 23mDelta

Deal found 12/16

$284

Tue 2/247:05 amIAD - BOI

1 stop14h 27mAlaska Airlines

Sat 2/286:28 amBOI - IAD

1 stop8h 52mAlaska Airlines

Deal found 12/14

$287

Thu 1/86:00 amBWI - JAC

1 stop8h 21mAmerican Airlines

Thu 1/152:10 pmJAC - BWI

1 stop7h 08mAmerican Airlines

Deal found 12/17

$289

Wed 2/187:55 amBWI - BOI

1 stop11h 20mSouthwest

Sat 2/215:55 amBOI - BWI

2 stops9h 55mSouthwest

Deal found 12/17

$312

Sat 1/178:42 amBWI - BOI

1 stop9h 28mUnited Airlines

Sat 1/2410:15 amBOI - BWI

1 stop9h 11mUnited Airlines

Deal found 12/15

$284

Thu 1/87:30 amIAD - BOI

1 stop10h 47mDelta

Thu 1/151:40 pmBOI - IAD

1 stop7h 30mDelta

Deal found 12/15

$287

Sat 1/176:04 pmIAD - BOI

1 stop20h 47mAlaska Airlines

Sat 1/246:23 amBOI - IAD

1 stop8h 03mAlaska Airlines

Deal found 12/15

$287

Tue 1/134:10 pmBWI - BOI

1 stop7h 42mUnited Airlines

Tue 1/2010:15 amBOI - BWI

1 stop9h 11mUnited Airlines

Deal found 12/16

$284

Sat 1/177:30 amIAD - BOI

1 stop10h 47mDelta

Wed 1/2110:39 amBOI - IAD

1 stop10h 31mDelta

Deal found 12/16

$287

Mon 2/237:05 amIAD - BOI

1 stop12h 30mAlaska Airlines

Sat 2/286:28 amBOI - IAD

1 stop8h 52mAlaska Airlines

Deal found 12/14

$287

Fri 2/206:00 amDCA - SUN

1 stop8h 57mAmerican Airlines

Tue 2/241:27 pmSUN - DCA

1 stop7h 33mAmerican Airlines

Deal found 12/17

$324

Wed 2/117:30 amIAD - BOI

1 stop10h 47mDelta

Sun 2/151:51 pmBOI - IAD

1 stop7h 19mDelta

Deal found 12/15

$287

Mon 1/126:04 pmIAD - BOI

1 stop18h 48mAlaska Airlines

Mon 1/199:02 amBOI - IAD

1 stop29h 24mAlaska Airlines

Deal found 12/14

$287

Fri 2/202:36 pmIAD - SUN

1 stop8h 49mUnited Airlines

Tue 2/241:14 pmSUN - IAD

1 stop8h 42mUnited Airlines

Deal found 12/17

$289

Sat 2/216:00 amDCA - SUN

1 stop8h 58mAmerican Airlines

Sat 2/287:46 amSUN - DCA

2 stops11h 01mAmerican Airlines

Deal found 12/16

$329

Sat 2/147:30 amIAD - BOI

1 stop16h 26mDelta

Thu 2/191:51 pmBOI - IAD

1 stop7h 19mDelta

Deal found 12/15

$287

Sat 1/178:00 amDCA - BOI

1 stop9h 10mAlaska Airlines

Wed 1/215:55 pmBOI - DCA

1 stop20h 14mAlaska Airlines

Deal found 12/16

$287

Sat 1/106:30 amDCA - SUN

1 stop7h 32mUnited Airlines

Wed 1/1412:43 pmSUN - DCA

1 stop7h 54mUnited Airlines

Deal found 12/17

$289

Sat 2/219:11 amIAD - SUN

2 stops14h 11mAmerican Airlines

Sat 2/287:46 amSUN - IAD

2 stops13h 02mAmerican Airlines

Deal found 12/16

$334

Wed 1/147:30 amIAD - BOI

1 stop10h 47mDelta

Sat 1/171:40 pmBOI - IAD

1 stop7h 30mDelta

Deal found 12/15

$287

Tue 1/208:00 amDCA - BOI

1 stop9h 10mAlaska Airlines

Sat 1/249:02 amBOI - DCA

1 stop10h 57mAlaska Airlines

Deal found 12/17

$287

Wed 2/44:10 pmBWI - BOI

1 stop7h 42mUnited Airlines

Wed 2/112:37 pmBOI - BWI

1 stop6h 38mUnited Airlines

Deal found 12/17

$307

Sat 1/175:01 pmDCA - BOI

1 stop21h 50mAlaska Airlines

Sat 1/2411:35 amBOI - DCA

1 stop8h 24mAlaska Airlines

Deal found 12/15

$287

Tue 1/137:30 amIAD - GEG

1 stop10h 30mDelta

Tue 1/201:20 pmGEG - IAD

1 stop6h 50mDelta

Deal found 12/16

$287

Sun 1/255:55 amDCA - JAC

2 stops13h 06mAmerican Airlines

Thu 1/291:42 pmJAC - DCA

1 stop7h 13mAmerican Airlines

Deal found 12/17

$368

Thu 1/2210:05 amBWI - JAC

2 stops12h 37mUnited Airlines

Mon 1/262:40 pmJAC - BWI

1 stop6h 35mUnited Airlines

Deal found 12/17

$310

Wed 2/188:00 amDCA - BOI

1 stop11h 35mAlaska Airlines

Sat 2/216:28 amBOI - DCA

1 stop13h 31mAlaska Airlines

Deal found 12/17

$287

Thu 3/57:30 amIAD - GEG

1 stop10h 28mDelta

Sun 3/811:40 amGEG - IAD

1 stop9h 08mDelta

Deal found 12/17

$287

Fri 1/166:00 amDCA - SUN

1 stop8h 46mAmerican Airlines

Tue 1/201:16 pmSUN - DCA

1 stop7h 39mAmerican Airlines

Deal found 12/18

$369

Last-minute flights from Washington, D.C. to Idaho
Discover last-minute flight deals from Washington, D.C. to Idaho. Data last updated December 18, 2025 and is based on user searches.

Thu 1/86:00 amBWI - JAC

1 stop8h 21mAmerican Airlines

Thu 1/152:10 pmJAC - BWI

1 stop7h 08mAmerican Airlines

Deal found 12/17

$289

Thu 1/88:45 amBWI - JAC

2 stops12h 21mDelta

Thu 1/1512:58 pmJAC - BWI

1 stop8h 46mDelta

Deal found 12/17

$294

Sat 1/106:30 amDCA - SUN

1 stop7h 32mUnited Airlines

Wed 1/1412:43 pmSUN - DCA

1 stop7h 54mUnited Airlines

Deal found 12/17

$289

Tue 1/136:00 amBWI - BOI

1 stop8h 46mDelta

Tue 1/203:03 pmBOI - BWI

1 stop6h 23mDelta

Deal found 12/16

$284

Tue 1/137:30 amIAD - GEG

1 stop10h 30mDelta

Tue 1/201:20 pmGEG - IAD

1 stop6h 50mDelta

Deal found 12/16

$287

Sat 1/177:30 amIAD - BOI

1 stop10h 47mDelta

Wed 1/211:40 pmBOI - IAD

1 stop7h 30mDelta

Deal found 12/17

$287

Sat 1/175:01 pmDCA - BOI

1 stop21h 50mAlaska Airlines

Wed 1/216:23 amBOI - DCA

1 stop13h 36mAlaska Airlines

Deal found 12/17

$287

Sat 1/176:05 amBWI - BOI

1 stop9h 57mDelta

Sat 1/2410:39 amBOI - BWI

2 stops11h 05mDelta

Deal found 12/15

$288

Sat 1/177:35 amDCA - BOI

2 stops12h 53mDelta

Wed 1/215:40 amBOI - DCA

1 stop7h 40mDelta

Deal found 12/17

$292

Tue 1/207:14 pmBWI - BOI

1 stop17h 38mAlaska Airlines

Sat 1/246:23 amBOI - BWI

1 stop9h 51mAlaska Airlines

Deal found 12/17

$283

Tue 1/203:00 pmBWI - BOI

2 stops10h 12mDelta

Sat 1/2410:39 amBOI - BWI

2 stops11h 05mDelta

Deal found 12/17

$293

Wed 1/216:05 amBWI - BOI

2 stops12h 12mDelta

Tue 1/279:15 amBOI - BWI

2 stops12h 29mDelta

Deal found 12/17

$276

One-way flights from Washington, D.C. to Idaho
Search for one-way flight options from Washington, D.C. to Idaho. Find affordable one-way fares based on user searches. Data last updated December 18, 2025.

Thu 2/56:00 pmDCA - BOI

1 stop19h 12mFrontier

Deal found 12/17

$78

Thu 1/158:00 amDCA - BOI

1 stop7h 25mFrontier

Deal found 12/15

$91

Thu 2/56:00 amBWI - BOI

2 stops31h 12mFrontier

Deal found 12/17

$128

Tue 1/206:05 amBWI - BOI

1 stop9h 29mDelta

Deal found 12/17

$131

Wed 1/146:00 pmDCA - BOI

1 stop21h 25mFrontier

Deal found 12/17

$132

Tue 1/2010:05 amBWI - BOI

2 stops11h 46mUnited Airlines

Deal found 12/17

$136

Sun 3/87:00 amIAD - SUN

1 stop8h 43mDelta

Deal found 12/17

$145

Wed 2/113:00 pmBWI - BOI

1 stop7h 55mDelta

Deal found 12/16

$154

Tue 1/208:00 amDCA - BOI

1 stop9h 10mAlaska Airlines

Deal found 12/17

$155

Tue 1/207:00 amIAD - BOI

1 stop8h 34mDelta

Deal found 12/17

$156

Tue 1/203:10 pmDCA - BOI

1 stop7h 45mDelta

Deal found 12/17

$156

Wed 2/46:04 pmIAD - GEG

1 stop8h 00mAlaska Airlines

Deal found 12/17

$157

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

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$274 (Delta)
One-way from	$78 (Trip.com)
Popular in	December
Cheapest in	April
Average price	$687

Provider with most accurate pricing for Washington, D.C. (WAS)-Boise Air Term. Gowen Fld flight deals.

Search Deals

Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Boise Air Term. Gowen Fld flights.

Search Deals

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

Search Deals

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

Search Deals

Highest demand for flights based on searches. 16% potential increase in price ($85 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 6% potential price decrease ($25 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Jackson

IAD - JAC

IADJAC

Washington, D.C. Dulles Intl

Mon 2/2

2:24 pm-8:42 pm

1 stop8h 18m

Jackson Hole

Wed 2/4

2:40 pm-11:22 pm

1 stop6h 42m

$280

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

Tue 1/13

6:00 am-12:46 pm

1 stop8h 46m

Boise Air Term. Gowen Fld

Tue 1/20

3:03 pm-11:26 pm

1 stop6h 23m

$284

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

Sat 1/17

8:42 am-4:10 pm

1 stop9h 28m

Boise Air Term. Gowen Fld

Sat 1/24

10:15 am-9:26 pm

1 stop9h 11m

$284

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

Tue 1/13

4:10 pm-9:52 pm

1 stop7h 42m

Boise Air Term. Gowen Fld

Tue 1/20

10:15 am-9:26 pm

1 stop9h 11m

$284

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Tue 2/24

7:05 am-7:32 pm

1 stop14h 27m

Boise Air Term. Gowen Fld

Sat 2/28

6:28 am-5:20 pm

1 stop8h 52m

$287

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Thu 1/8

7:30 am-4:17 pm

1 stop10h 47m

Boise Air Term. Gowen Fld

Thu 1/15

1:40 pm-11:10 pm

1 stop7h 30m

$287

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Sat 1/17

6:04 pm-12:51 pm

1 stop20h 47m

Boise Air Term. Gowen Fld

Sat 1/24

6:23 am-4:26 pm

1 stop8h 03m

$287

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Sat 1/17

7:30 am-4:17 pm

1 stop10h 47m

Boise Air Term. Gowen Fld

Wed 1/21

10:39 am-11:10 pm

1 stop10h 31m

$287

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Mon 2/23

7:05 am-5:35 pm

1 stop12h 30m

Boise Air Term. Gowen Fld

Sat 2/28

6:28 am-5:20 pm

1 stop8h 52m

$287

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Wed 2/11

7:30 am-4:17 pm

1 stop10h 47m

Boise Air Term. Gowen Fld

Sun 2/15

1:51 pm-11:10 pm

1 stop7h 19m

$287

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 60 results

...

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

Have a flexible travel schedule? Discover the best time to fly to Idaho from Washington, D.C. 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 Washington, D.C. to Idaho

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

Currently, September is the cheapest month in which you can book a flight from Washington, D.C. to Idaho (average of $150). Flying from Washington, D.C. to Idaho in February is currently the most expensive (average of $323). 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 WAS to ID?

It’s typically best to fly out from Washington, D.C. to Idaho at noon. Doing so could potentially save you 28% on the flight price compared to flying in the afternoon, which is usually more expensive.

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

Reviews of airlines servicing Idaho

Read reviews from past customers who have flown Alaska Airlines, Southwest, and Delta from Washington, D.C. to Idaho. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Alaska Airlines

8.0

Very good

11,477 reviews

Reviews

1 / 20

2.0

Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.

Alaska Airlines

8.0

Very good

11,477 reviews

Alaska Airlines

8.0

Very good

11,477 reviews

Reviews

1 / 20

2.0

Mediocre

Art,Dec 2025

SAN - OGG

Southwest

7.9

Good

4,250 reviews

Alaska Airlines

8.0

Very good

11,477 reviews

Reviews

1 / 20

2.0

Mediocre

Art,Dec 2025

SAN - OGG

Delta

7.9

Good

8,005 reviews

Alaska Airlines

8.0

Very good

11,477 reviews

Reviews

1 / 20

2.0

Mediocre

Art,Dec 2025

SAN - OGG

United Airlines

7.4

Good

9,091 reviews

Alaska Airlines

8.0

Very good

11,477 reviews

Reviews

1 / 20

2.0

Mediocre

Art,Dec 2025

SAN - OGG

American Airlines

7.2

Good

11,054 reviews

Alaska Airlines

8.0

Very good

11,477 reviews

Reviews

1 / 20

2.0

Mediocre

Art,Dec 2025

SAN - OGG

Related info for your journey

How long is the flight from Washington, D.C. to Idaho?
United Airlines, Delta, and Alaska Airlines can get you from Washington, D.C. to Idaho in just under 8h 18m. Your travel time can differ by up to 6h 09m. Airlines will cover a distance of 1745 mi. This flight may include one or multiple stops.
What are the cheapest airlines to fly from Washington, D.C. to Idaho one-way?
To fly one-way, consider booking your trip with American Airlines, which is currently one of the cheapest options available, starting at $148. United Airlines flights start at $150 while deals on Delta start at $150 one-way.
What are the most popular routes from Washington, D.C. to Idaho?
When deciding which route to take from Washington, D.C. to Idaho consider Washington, D.C. Dulles Intl - Jackson Hole, Washington, D.C. Reagan-National - Jackson Hole or Baltimore/Washington - Jackson Hole as they are the most popular.
Can I find deals for flights from Washington, D.C. to Idaho that include hotel bookings?
Yes. In addition to deals on Washington, D.C. to Idaho flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Washington, D.C. to Idaho?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to Idaho.
Can I find deals for business class flights from Washington, D.C. to Idaho?
Yes. Cheapflights offers flight deals from Washington, D.C. to Idaho 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 Washington, D.C. to Idaho?
Currently, September is the cheapest month in which you can book a flight from Washington, D.C. to Idaho (average of $150). Flying from Washington, D.C. to Idaho in February is currently the most expensive (average of $323). 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

Browse thousands of different options on Cheapflights for your next trip

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

Airline	Cheapest	Average	Flexibility	On-time
Alaska Airlines	Cheapest$182	Average$429	FlexibilityNo cancel fee	On-time75%
Delta	Cheapest$200	Average$516	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$221	Average$600	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$300	Average$611	FlexibilityNo cancel fee	On-time71%
Southwest	Cheapest$346	Average$492	FlexibilityNo cancel fee	On-time63%

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$78+ Cheap flights from Washington, D.C. (WAS) to Idaho

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 2/5. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Washington, D.C. to Idaho with Cheapflights

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

Cheapest flights from Washington, D.C. to IdahoExplore the most affordable flight options available from Washington, D.C. to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

Explore the most affordable flight options available from Washington, D.C. to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

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

Keep the following information in mind while searching for Washington, D.C. to Idaho flight deals. Data was last updated December 18, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

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

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

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

Cheapflights Insights

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

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

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

Find hourly flight availability from Washington, D.C. to Idaho. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2025.

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

Reviews of airlines servicing Idaho

Read reviews from past customers who have flown Alaska Airlines, Southwest, and Delta from Washington, D.C. to Idaho. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. to Idaho. 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 Washington, D.C. to Idaho?

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

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

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

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

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

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

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Alternative routes for Washington, D.C. to Idaho

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

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Cheapest flights from Washington, D.C. to Idaho
Explore the most affordable flight options available from Washington, D.C. to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.