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Washington, D.C.

$119+ 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 1/12. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — WAS
Dec 27 — Jan 31
Fri 12/27
Fri 1/3
1 adult, Economy
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Cheap flight deals from Idaho to Washington, D.C.

Discover tips and strategies to find the most affordable flight options for your journey from Idaho (USID) to Washington, D.C. (WAS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 22, 2024.

Round-trip from

$251
(Expedia)

One-way from

$119
(CheapOair)
From Idaho to Washington, D.C. (WAS)
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One-way flight from Idaho to Washington, D.C. (WAS)
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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 December 22, 2024.

This Delta deal was found by Cheapflights users on 12/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/305:32 amBOI - DCA
1 stop6h 25mDelta
Mon 1/65:10 pmDCA - BOI
1 stop9h 08mDelta
Deal found 12/21$677
This United deal was found by Cheapflights users on 12/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/245:05 amGEG - BWI
1 stop7h 00mUnited Airlines
Tue 12/314:02 pmBWI - GEG
1 stop8h 02mUnited Airlines
Deal found 12/21$792
This Southwest deal was found by Cheapflights users on 12/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/256:00 amBOI - IAD
1 stop7h 00mSouthwest
Sun 1/58:00 pmIAD - BOI
1 stop6h 45mSouthwest
Deal found 12/20$823
This Alaska Airlines deal was found by Cheapflights users on 12/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/208:59 pmGEG - DCA
1 stop17h 55mAlaska Airlines
Mon 1/69:00 amDCA - GEG
1 stop16h 31mAlaska Airlines
Deal found 12/20$823
This Southwest deal was found by Cheapflights users on 12/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/257:25 amBOI - DCA
2 stops11h 05mSouthwest
Sun 1/54:00 pmDCA - BOI
2 stops10h 05mSouthwest
Deal found 12/20$833
This Delta deal was found by Cheapflights users on 12/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/241:40 pmGEG - IAD
1 stop6h 39mDelta
Tue 12/315:27 pmIAD - GEG
2 stops8h 44mDelta
Deal found 12/21$857
This Delta deal was found by Cheapflights users on 12/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/291:32 pmGEG - DCA
1 stop7h 25mDelta
Fri 1/37:07 pmDCA - GEG
1 stop7h 04mDelta
Deal found 12/21$866
This Delta deal was found by Cheapflights users on 12/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2111:30 pmBOI - IAD
1 stop7h 44mDelta
Sun 1/56:00 amIAD - BOI
1 stop8h 52mDelta
Deal found 12/21$873
This American Airlines deal was found by Cheapflights users on 12/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/246:25 amGEG - BWI
2 stops10h 00mAmerican Airlines
Tue 12/315:00 amBWI - GEG
2 stops11h 53mAmerican Airlines
Deal found 12/21$882
This Delta deal was found by Cheapflights users on 12/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2412:35 pmGEG - BWI
1 stop9h 03mDelta
Tue 12/315:42 pmBWI - GEG
2 stops8h 29mDelta
Deal found 12/21$887
This Alaska Airlines deal was found by Cheapflights users on 12/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/268:00 pmBOI - IAD
1 stop7h 40mAlaska Airlines
Thu 1/25:24 pmIAD - BOI
1 stop21h 31mAlaska Airlines
Deal found 12/21$954
This American Airlines deal was found by Cheapflights users on 12/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/235:30 amGEG - IAD
1 stop7h 54mAmerican Airlines
Mon 12/305:15 pmIAD - GEG
1 stop10h 24mAmerican Airlines
Deal found 12/21$956

Find flights from Idaho to Washington, D.C. within your budget

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, Cheapflights users made 2,558,603 searches. Data last updated December 22, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

BoiseBaltimore

BOI - BWI

BOIBWI

Boise Air Term. Gowen Fld

Mon 1/6

11:57 am-10:46 pm

1 stop8h 49m

Baltimore/Washington

Fri 1/10

10:37 am-6:43 pm

1 stop10h 06m

$251

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

Thu 1/23

2:10 pm-11:40 pm

1 stop6h 30m

Washington, D.C. Dulles Intl

Wed 1/29

6:00 am-12:00 pm

1 stop9h 00m

$292

SpokaneWashington, D.C.

GEG - DCA

GEGDCA

Spokane

Thu 1/23

1:10 pm-11:39 pm

1 stop7h 29m

Washington, D.C. Reagan-National

Wed 1/29

6:59 pm-10:51 pm

1 stop6h 52m

$292

SpokaneBaltimore

GEG - BWI

GEGBWI

Spokane

Thu 1/23

5:27 am-6:10 pm

1 stop9h 43m

Baltimore/Washington

Wed 1/29

5:00 am-1:49 pm

2 stops11h 49m

$312

SpokaneBaltimore

GEG - BWI

GEGBWI

Spokane

Thu 1/23

2:10 pm-11:54 pm

1 stop6h 44m

Baltimore/Washington

Wed 1/29

7:15 am-12:18 pm

1 stop8h 03m

$318

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

Sun 1/19

1:50 pm-11:30 pm

1 stop6h 40m

Washington, D.C. Dulles Intl

Mon 1/20

6:32 am-3:33 pm

1 stop12h 01m

$319

BoiseWashington, D.C.

BOI - DCA

BOIDCA

Boise Air Term. Gowen Fld

Sat 2/15

5:30 am-2:00 pm

1 stop6h 30m

Washington, D.C. Reagan-National

Mon 2/17

6:05 am-2:05 pm

1 stop10h 00m

$319

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Tue 1/14

1:20 pm-11:36 pm

1 stop8h 16m

Washington, D.C. Dulles Intl

Sun 1/19

4:05 pm-11:46 pm

1 stop9h 41m

$328

BoiseBaltimore

BOI - BWI

BOIBWI

Boise Air Term. Gowen Fld

Fri 2/14

5:30 am-2:04 pm

1 stop6h 34m

Baltimore/Washington

Mon 2/17

6:00 am-2:05 pm

1 stop10h 05m

$328

JacksonWashington, D.C.

JAC - DCA

JACDCA

Jackson Hole

Thu 4/3

12:46 pm-11:20 pm

1 stop8h 34m

Washington, D.C. Reagan-National

Tue 4/8

6:30 am-12:13 pm

1 stop7h 43m

$329

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/21

Showing 1-10 of 60 results
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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.

Travel insights for flights from Idaho to Washington, D.C.

Get recent, data-driven insights about flights from Idaho to Washington, D.C. including ideal travel times, pricing trends, and more.

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 $309). Flying from Idaho to Washington, D.C. in June is currently the most expensive (average of $389). 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?

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 December 22, 2024.

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.

Rainfall in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average rainfall totals by month.

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.

Temperature in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average temperature totals by month.

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).

Reviews of airlines servicing Washington, D.C.

Get insights into the airlines that provide service to Washington, D.C.. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Washington, D.C.. Reviews last updated December 22, 2024.
Peruse reviews from past customers who have flown with Delta, Southwest and Alaska Airlines from Idaho to Washington, D.C. to help guide your decision. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,804 reviews

Overall

8.1

Boarding

8.2

Comfort

8.1

Crew

8.7

Entertainment

7.7

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest
8.1
Very good
4,804 reviews
Southwest
8.1
Very good
4,804 reviews

Overall

8.1

Boarding

8.2

Comfort

8.1

Crew

8.7

Entertainment

7.7

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Alaska Airlines
8.0
Very good
9,537 reviews
Southwest
8.1
Very good
4,804 reviews

Overall

8.1

Boarding

8.2

Comfort

8.1

Crew

8.7

Entertainment

7.7

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Delta
8.0
Very good
8,594 reviews
Southwest
8.1
Very good
4,804 reviews

Overall

8.1

Boarding

8.2

Comfort

8.1

Crew

8.7

Entertainment

7.7

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

United Airlines
7.4
Good
9,028 reviews
Southwest
8.1
Very good
4,804 reviews

Overall

8.1

Boarding

8.2

Comfort

8.1

Crew

8.7

Entertainment

7.7

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,804 reviews

Overall

8.1

Boarding

8.2

Comfort

8.1

Crew

8.7

Entertainment

7.7

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

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.

  • 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 $119 on Spirit Airlines. Other airlines that offer cheap prices include United Airlines from $139 and Delta from $144 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. Reagan-National, Boise Air Term. Gowen Fld - Washington, D.C. Dulles Intl 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 $309). Flying from Idaho to Washington, D.C. in June is currently the most expensive (average of $389). 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.

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Alternative routes for Idaho to Washington, D.C.

See prices for flight routes from nearby airports that may be better suited for you.
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Los Angeles to Reagan-National flights
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Salt Lake City to Dulles Intl flights
San Diego to Dulles Intl flights
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Salt Lake City to Reagan-National flights
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Midway to Dulles Intl flights
Nashville to Reagan-National flights

Top 6 airlines flying from Idaho to Washington, D.C.

Discover the top 6 airlines that operate flights from Idaho to Washington, D.C.. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 22, 2024.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$185Average$292FlexibilityNo cancel feeOn-time65%
United AirlinesCheapest$316Average$710FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$321Average$543FlexibilityNo cancel feeOn-time63%
DeltaCheapest$324Average$577FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$369Average$718FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$397Average$501FlexibilityNo cancel feeOn-time75%
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