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$120+ 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 12/18. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — BOI
Nov 19 — Nov 261
Tue 11/19
Tue 11/26
1 adult, Economy
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Cheap flight deals from Washington, D.C. to Idaho

Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) to Idaho (USID). 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 November 14, 2024.

Find 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 November 14, 2024.

This FareScan deal was found by Cheapflights users on 11/12. 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 FareScan is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/95:30 amBWI - BOI
2 stops35h 20mSpirit Airlines
Thu 12/1911:57 amBOI - BWI
1 stop8h 49mSpirit Airlines
Deal found 11/12$233
This Delta deal was found by Cheapflights users on 11/14. 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 12/73:00 pmBWI - BOI
2 stops11h 06mDelta
Tue 12/105:10 pmBOI - BWI
2 stops10h 42mDelta
Deal found 11/14$293
This Delta deal was found by Cheapflights users on 11/12. 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 12/107:08 amBWI - GEG
1 stop8h 17mDelta
Wed 12/117:16 pmGEG - BWI
1 stop7h 36mDelta
Deal found 11/12$298
This Mytrip deal was found by Cheapflights users on 11/13. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/412:45 pmBWI - BOI
2 stops24h 13mMultiple Airlines
Thu 12/55:28 pmBOI - BWI
2 stops22h 56mMultiple Airlines
Deal found 11/13$303
This Delta deal was found by Cheapflights users on 11/14. 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.
Thu 12/126:07 amIAD - GEG
1 stop10h 05mDelta
Mon 12/1612:52 pmGEG - IAD
1 stop8h 04mDelta
Deal found 11/14$306
This Delta deal was found by Cheapflights users on 11/13. 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.
Thu 12/511:47 amDCA - GEG
2 stops9h 29mDelta
Mon 12/92:20 pmGEG - DCA
1 stop6h 37mDelta
Deal found 11/13$311
This United Airlines deal was found by Cheapflights users on 11/13. 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 Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/45:20 pmIAD - BOI
1 stop7h 24mUnited Airlines
Thu 12/510:40 amBOI - IAD
1 stop10h 19mUnited Airlines
Deal found 11/13$336
This Delta deal was found by Cheapflights users on 11/13. 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.
Thu 12/124:00 pmDCA - BOI
2 stops10h 43mDelta
Wed 12/181:43 pmBOI - DCA
1 stop7h 56mDelta
Deal found 11/13$344
This Delta deal was found by Cheapflights users on 11/13. 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.
Fri 12/61:35 pmIAD - BOI
2 stops13h 08mDelta
Mon 12/911:10 amBOI - IAD
2 stops10h 46mDelta
Deal found 11/13$349
This United Airlines deal was found by Cheapflights users on 11/13. 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 Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/74:13 pmDCA - JAC
1 stop7h 06mUnited Airlines
Sat 12/1412:45 pmJAC - DCA
1 stop7h 58mUnited Airlines
Deal found 11/13$364
This Southwest deal was found by Cheapflights users on 11/14. 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.
Fri 12/134:00 pmIAD - GEG
1 stop11h 05mSouthwest
Mon 12/161:30 pmGEG - IAD
1 stop6h 30mSouthwest
Deal found 11/14$366
This Delta deal was found by Cheapflights users on 11/13. 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.
Wed 12/119:49 amDCA - JAC
2 stops8h 56mDelta
Tue 12/176:50 amJAC - DCA
1 stop7h 15mDelta
Deal found 11/13$379

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

Customize your flight search to find flights from Washington, D.C. to Idaho 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 2,752,363 searches. Data last updated November 14, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

Mon 12/9

5:30 am-2:50 pm

2 stops35h 20m

Boise Air Term. Gowen Fld

Thu 12/19

11:57 am-10:46 pm

1 stop8h 49m

$233

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

Sat 12/7

3:00 pm-12:06 am

2 stops11h 06m

Boise Air Term. Gowen Fld

Tue 12/10

5:10 pm-5:52 am

2 stops10h 42m

$293

BaltimoreSpokane

BWI - GEG

BWIGEG

Baltimore/Washington

Tue 12/10

7:08 am-12:25 pm

1 stop8h 17m

Spokane

Wed 12/11

7:16 pm-5:52 am

1 stop7h 36m

$298

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

Wed 12/4

12:45 pm-10:58 am

2 stops24h 13m

Boise Air Term. Gowen Fld

Thu 12/5

5:28 pm-6:24 pm

2 stops22h 56m

$303

Washington, D.C.Spokane

IAD - GEG

IADGEG

Washington, D.C. Dulles Intl

Thu 12/12

6:07 am-1:12 pm

1 stop10h 05m

Spokane

Mon 12/16

12:52 pm-11:56 pm

1 stop8h 04m

$306

Washington, D.C.Spokane

DCA - GEG

DCAGEG

Washington, D.C. Reagan-National

Thu 12/5

11:47 am-6:16 pm

2 stops9h 29m

Spokane

Mon 12/9

2:20 pm-11:57 pm

1 stop6h 37m

$311

Washington, D.C.Spokane

IAD - GEG

IADGEG

Washington, D.C. Dulles Intl

Sun 1/12

6:32 am-3:33 pm

1 stop12h 01m

Spokane

Fri 1/17

1:50 pm-11:30 pm

1 stop6h 40m

$331

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Tue 2/18

6:00 pm-11:43 pm

1 stop7h 43m

Boise Air Term. Gowen Fld

Fri 2/21

5:40 am-3:43 pm

1 stop8h 03m

$335

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Wed 12/4

5:20 pm-10:44 pm

1 stop7h 24m

Boise Air Term. Gowen Fld

Thu 12/5

10:40 am-10:59 pm

1 stop10h 19m

$336

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Sat 2/1

7:15 am-12:45 pm

1 stop7h 30m

Boise Air Term. Gowen Fld

Sun 2/16

6:00 am-5:05 pm

1 stop9h 05m

$340

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/13

Showing 1-10 of 60 results
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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.

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

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

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

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. to Idaho (average of $310). Flying from Washington, D.C. to Idaho in June is currently the most expensive (average of $436). 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?

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 November 14, 2024.

When flying from Washington, D.C. to Idaho, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Idaho by month

Plan your trip to Idaho by taking into account the average rainfall totals by month.

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.

Temperature in Idaho by month

Plan your trip to Idaho by taking into account the average temperature totals by month.

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).

Reviews of airlines servicing Idaho

Get insights into the airlines that provide service to Idaho. 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 Idaho. Reviews last updated November 14, 2024.
To help decide which airline to fly from Washington, D.C. to Idaho, see what other customers have to say about Spirit Airlines, American Airlines and Southwest. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
5,045 reviews

Comfort

8.1

Boarding

8.3

Overall

8.1

Crew

8.7

Entertainment

7.7

Food

7.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Southwest
8.1
Very good
5,045 reviews
Southwest
8.1
Very good
5,045 reviews

Comfort

8.1

Boarding

8.3

Overall

8.1

Crew

8.7

Entertainment

7.7

Food

7.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Alaska Airlines
8.0
Very good
9,439 reviews
Southwest
8.1
Very good
5,045 reviews

Comfort

8.1

Boarding

8.3

Overall

8.1

Crew

8.7

Entertainment

7.7

Food

7.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Delta
8.0
Very good
8,788 reviews
Southwest
8.1
Very good
5,045 reviews

Comfort

8.1

Boarding

8.3

Overall

8.1

Crew

8.7

Entertainment

7.7

Food

7.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

United Airlines
7.4
Good
9,194 reviews
Southwest
8.1
Very good
5,045 reviews

Comfort

8.1

Boarding

8.3

Overall

8.1

Crew

8.7

Entertainment

7.7

Food

7.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
5,045 reviews

Comfort

8.1

Boarding

8.3

Overall

8.1

Crew

8.7

Entertainment

7.7

Food

7.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

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.

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

    To fly one-way, consider booking your trip with Spirit Airlines, which is currently one of the cheapest options available, starting at $120. Delta flights start at $149 while deals on American Airlines start at $153 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, Baltimore/Washington - Jackson Hole or Washington, D.C. Reagan-National - 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, January is the cheapest month in which you can book a flight from Washington, D.C. to Idaho (average of $310). Flying from Washington, D.C. to Idaho in June is currently the most expensive (average of $436). 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

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Alternative routes for Washington, D.C. to Idaho

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Washington, D.C. to Idaho

Discover the top 6 airlines that operate flights from Washington, D.C. to Idaho. 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 2,752,363 searches. Data last updated November 14, 2024.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$224Average$327FlexibilityNo cancel feeOn-time65%
DeltaCheapest$310Average$523FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$334Average$618FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$336Average$665FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$360Average$575FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$362Average$566FlexibilityNo cancel feeOn-time63%
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