HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
District of Columbia

$119+ Cheap flights from Idaho to District of Columbia

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 5/20. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — BWI
Apr 6 — Apr 131
Sun 4/6
Sun 4/13
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Idaho to District of Columbia with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Idaho to District of Columbia

Keep the following information in mind while searching for Idaho to District of Columbia flight deals. Data was last updated April 1, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$297
(Alaska Airlines)

One-way from

$119
(Frontier)

Popular in

March

Cheapest in

February

Average price

$384
Provider with most accurate pricing for Boise Air Term. Gowen Fld-Washington, D.C. (WAS) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-Washington, D.C. (WAS) flights.
Search Deals
From Idaho to District of Columbia
Search Deals
One-way flight from Idaho to District of Columbia
Search Deals
High demand for flights, 6% potential price rise
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

Find flight deals from Idaho to District of Columbia

Cheapest flights from Idaho to District of Columbia
Explore the most affordable flight options available from Idaho to District of Columbia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 1, 2025.

This Alaska Airlines deal was found by Cheapflights users on 3/31. 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.
Wed 5/76:30 amBOI - DCA
1 stop8h 08mAlaska Airlines
Tue 5/136:35 pmDCA - BOI
1 stop20h 56mAlaska Airlines
Deal found 3/31$297
This Alaska Airlines deal was found by Cheapflights users on 3/31. 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.
Sat 9/278:48 pmGEG - IAD
1 stop7h 44mAlaska Airlines
Sat 10/114:15 pmIAD - GEG
1 stop9h 18mAlaska Airlines
Deal found 3/31$298
This Alaska Airlines deal was found by Cheapflights users on 3/31. 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 4/246:30 amBOI - IAD
1 stop9h 43mAlaska Airlines
Sun 4/276:30 amIAD - BOI
1 stop7h 46mAlaska Airlines
Deal found 3/31$300
This Hawaiian Airlines deal was found by Cheapflights users on 3/31. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/79:18 amBOI - DCA
1 stop10h 41mHawaiian Airlines
Wed 5/148:00 amDCA - BOI
1 stop10h 55mHawaiian Airlines
Deal found 3/31$300
This Delta deal was found by Cheapflights users on 3/31. 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 5/42:20 pmBOI - IAD
1 stop8h 08mDelta
Wed 5/77:45 amIAD - BOI
1 stop10h 34mDelta
Deal found 3/31$301
This Delta deal was found by Cheapflights users on 3/31. 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 9/165:40 amBOI - DCA
1 stop7h 55mDelta
Fri 9/194:40 pmDCA - BOI
1 stop9h 19mDelta
Deal found 3/31$301
This Delta deal was found by Cheapflights users on 3/31. 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 4/257:25 pmGEG - IAD
2 stops12h 58mDelta
Mon 4/287:25 amIAD - GEG
1 stop10h 29mDelta
Deal found 3/31$302
This Delta deal was found by Cheapflights users on 3/30. 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 4/235:00 amGEG - DCA
1 stop7h 31mDelta
Wed 4/306:00 amDCA - GEG
2 stops10h 05mDelta
Deal found 3/30$302
This Booking.com deal was found by Cheapflights users on 3/31. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/812:36 pmBOI - DCA
1 stop7h 23mFrontier
Wed 6/111:00 pmDCA - BOI
1 stop24h 47mFrontier
Deal found 3/31$308
This United Airlines deal was found by Cheapflights users on 3/31. 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.
Fri 5/23:25 pmGEG - IAD
1 stop10h 58mUnited Airlines
Sun 5/48:30 amIAD - GEG
1 stop9h 11mUnited Airlines
Deal found 3/31$314
This Kiwi.com deal was found by Cheapflights users on 3/31. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/101:25 pmGEG - IAD
1 stop7h 33mHawaiian Airlines
Mon 5/195:14 pmIAD - GEG
1 stop9h 33mHawaiian Airlines
Deal found 3/31$318
This Southwest deal was found by Cheapflights users on 3/31. 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.
Thu 7/176:10 amGEG - IAD
1 stop7h 55mSouthwest
Mon 7/215:50 pmIAD - GEG
1 stop8h 10mSouthwest
Deal found 3/31$328

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated April 1, 2025.
Use the filters below to find and compare flights from Idaho to District of Columbia that are best for you.

Fly from

Idaho

Fly to

District of Columbia

Route

Depart

Return

Price

BoiseWashington, D.C.

BOI - DCA

BOIDCA

Boise Air Term. Gowen Fld

Wed 5/7

6:30 am-4:38 pm

1 stop8h 08m

Washington, D.C. Reagan-National

Tue 5/13

6:35 pm-1:31 pm

1 stop20h 56m

$297

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

Sat 9/27

8:48 pm-7:32 am

1 stop7h 44m

Washington, D.C. Dulles Intl

Sat 10/11

4:15 pm-10:33 pm

1 stop9h 18m

$298

BoiseWashington, D.C.

BOI - DCA

BOIDCA

Boise Air Term. Gowen Fld

Wed 5/7

9:18 am-9:59 pm

1 stop10h 41m

Washington, D.C. Reagan-National

Wed 5/14

8:00 am-4:55 pm

1 stop10h 55m

$300

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Thu 4/24

6:30 am-6:13 pm

1 stop9h 43m

Washington, D.C. Dulles Intl

Sun 4/27

6:30 am-12:16 pm

1 stop7h 46m

$300

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Sun 5/4

2:20 pm-12:28 am

1 stop8h 08m

Washington, D.C. Dulles Intl

Wed 5/7

7:45 am-4:19 pm

1 stop10h 34m

$301

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

Fri 4/25

7:25 pm-11:23 am

2 stops12h 58m

Washington, D.C. Dulles Intl

Mon 4/28

7:25 am-2:54 pm

1 stop10h 29m

$302

SpokaneWashington, D.C.

GEG - DCA

GEGDCA

Spokane

Wed 4/23

5:00 am-3:31 pm

1 stop7h 31m

Washington, D.C. Reagan-National

Wed 4/30

6:00 am-1:05 pm

2 stops10h 05m

$302

BoiseWashington, D.C.

BOI - DCA

BOIDCA

Boise Air Term. Gowen Fld

Wed 5/7

2:47 pm-11:26 pm

1 stop6h 39m

Washington, D.C. Reagan-National

Tue 5/13

4:00 pm-12:22 am

2 stops10h 22m

$306

BoiseWashington, D.C.

BOI - DCA

BOIDCA

Boise Air Term. Gowen Fld

Sun 6/8

12:36 pm-9:59 pm

1 stop7h 23m

Washington, D.C. Reagan-National

Wed 6/11

1:00 pm-11:47 am

1 stop24h 47m

$308

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

Fri 5/2

3:25 pm-5:23 am

1 stop10h 58m

Washington, D.C. Dulles Intl

Sun 5/4

8:30 am-2:41 pm

1 stop9h 11m

$314

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/1

Showing 1-10 of 60 results
1
2
3
...
6

Best time to book a flight from Idaho to District of Columbia

Have a flexible travel schedule? Discover the best time to fly to District of Columbia 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 District of Columbia

What is the cheapest month to book a flight from Idaho to District of Columbia?

Currently, August is the cheapest month in which you can book a flight from Idaho to District of Columbia (average of $241). Flying from Idaho to District of Columbia in March is currently the most expensive (average of $290). 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 DC?

Find hourly flight availability from Idaho to District of Columbia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 1, 2025.

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

Rainfall in District of Columbia by month

Plan your trip to District of Columbia by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in District of Columbia 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 District of Columbia when rainfall is around 2.6 in.

Temperature in District of Columbia by month

Plan your trip to District of Columbia by taking into account the average temperature totals by month.

If weather is an important factor for your trip to District of Columbia, 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 District of Columbia

Get insights into the airlines that provide service to District of Columbia. 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 District of Columbia. Reviews last updated April 1, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest and Delta from Idaho to District of Columbia. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,818 reviews

Entertainment

7.1

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
9,818 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Entertainment

7.1

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Southwest
8.0
Very good
4,276 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Entertainment

7.1

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,899 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Entertainment

7.1

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Hawaiian Airlines
7.9
Good
2,342 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Entertainment

7.1

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,615 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Entertainment

7.1

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Related info for your journey

Find useful and relevant information for your journey from Idaho to District of Columbia. 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 District of Columbia one-way?

    $119 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Alaska Airlines and Hawaiian Airlines, with prices starting from $135 and $148, respectively.

  • Can I find deals for flights from Idaho to District of Columbia that include hotel bookings?

    Yes. In addition to deals on Idaho to District of Columbia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Idaho to District of Columbia?

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

  • Can I find deals for business class flights from Idaho to District of Columbia?

    Yes. Cheapflights offers flight deals from Idaho to District of Columbia 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 District of Columbia?

    Currently, August is the cheapest month in which you can book a flight from Idaho to District of Columbia (average of $241). Flying from Idaho to District of Columbia in March is currently the most expensive (average of $290). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Idaho to District of Columbia

See prices for flight routes from nearby airports that may be better suited for you.
LaGuardia to Miami flights
Newark to Fort Lauderdale flights
Newark to Miami flights
LaGuardia to Fort Lauderdale flights
John F Kennedy Intl to Las Vegas flights
John F Kennedy Intl to Los Angeles flights
Los Angeles to John F Kennedy Intl flights
John F Kennedy Intl to Miami flights
Newark to Orlando flights
Newark to Las Vegas flights
Dallas/Fort Worth to Seattle flights
LaGuardia to Orlando flights
Dallas/Fort Worth to LaGuardia flights
LaGuardia to Dallas/Fort Worth flights
John F Kennedy Intl to Fort Lauderdale flights
John F Kennedy Intl to Orlando flights
Newark to Los Angeles flights
San Francisco to John F Kennedy Intl flights
Los Angeles to Newark flights
Los Angeles to Honolulu flights
Dallas/Fort Worth to O'Hare Intl flights
Newark to Seattle flights
Dallas/Fort Worth to Las Vegas flights
Newark to Dallas/Fort Worth flights
LaGuardia to Atlanta flights
Denver to Las Vegas flights
O'Hare Intl to Las Vegas flights
John F Kennedy Intl to Seattle flights
Newark to Tampa flights
Dallas/Fort Worth to Newark flights
John F Kennedy Intl to San Francisco flights
Seattle to Las Vegas flights
LaGuardia to O'Hare Intl flights
John F Kennedy Intl to West Palm Beach flights
San Francisco to Newark flights
Dallas/Fort Worth to Orlando flights
Seattle to Newark flights
Atlanta to LaGuardia flights
John F Kennedy Intl to Sky Harbor Intl flights
O'Hare Intl to LaGuardia flights
Los Angeles to LaGuardia flights
Los Angeles to Seattle flights
Newark to New Orleans flights
LaGuardia to Las Vegas flights
John F Kennedy Intl to O'Hare Intl flights
LaGuardia to Los Angeles flights
O'Hare Intl to Dallas/Fort Worth flights
Seattle to Los Angeles flights
John F Kennedy Intl to Denver flights
Atlanta to Las Vegas flights

Top 6 airlines flying from Idaho to District of Columbia

Discover the top 6 airlines that operate flights from Idaho to District of Columbia. 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 April 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$141Average$292FlexibilityNo cancel feeOn-time65%
Alaska AirlinesCheapest$192Average$568FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$305Average$708FlexibilityNo cancel feeOn-time69%
DeltaCheapest$306Average$492FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$316Average$633FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$321Average$450FlexibilityNo cancel feeOn-time63%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.