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Reagan-National

$91+ Cheap flights from Idaho to Reagan-National (DCA)

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.
BOI — DCA
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap flight deals from Idaho to Reagan-National

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

This Kiwi.com deal was found by Cheapflights users on 12/15. 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.
Fri 12/1910:41 pmBOI - DCA
2 stops36h 20mMultiple Airlines
Sat 1/106:00 pmDCA - BOI
1 stop19h 17mMultiple Airlines
Deal found 12/15$356
This Southwest deal was found by Cheapflights users on 12/14. 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.
Thu 12/256:10 amBOI - DCA
1 stop8h 40mSouthwest
Thu 1/14:35 pmDCA - BOI
1 stop7h 50mSouthwest
Deal found 12/14$375
This American Airlines deal was found by Cheapflights users on 12/17. 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.
Wed 12/311:35 pmBOI - DCA
1 stop8h 24mAmerican Airlines
Sun 1/41:07 pmDCA - BOI
1 stop10h 58mAmerican Airlines
Deal found 12/17$537
This United Airlines deal was found by Cheapflights users on 12/15. 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.
Tue 12/306:15 amBOI - DCA
1 stop6h 44mUnited Airlines
Sat 1/34:59 pmDCA - BOI
1 stop8h 00mUnited Airlines
Deal found 12/15$625
This Delta deal was found by Cheapflights users on 12/17. 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 12/317:30 amBOI - DCA
2 stops13h 20mDelta
Sun 1/47:15 pmDCA - BOI
1 stop6h 38mDelta
Deal found 12/17$635
This Delta deal was found by Cheapflights users on 12/16. 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 12/221:55 pmJAC - DCA
1 stop6h 06mDelta
Wed 12/246:00 amDCA - JAC
1 stop9h 21mDelta
Deal found 12/16$672
This Delta deal was found by Cheapflights users on 12/16. 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 12/181:17 pmIDA - DCA
2 stops8h 20mDelta
Thu 1/15:11 pmDCA - IDA
1 stop7h 41mDelta
Deal found 12/16$676
This United Airlines deal was found by Cheapflights users on 12/17. 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.
Thu 12/186:40 amIDA - DCA
1 stop6h 19mUnited Airlines
Thu 1/14:17 pmDCA - IDA
1 stop6h 57mUnited Airlines
Deal found 12/17$681
This United Airlines deal was found by Cheapflights users on 12/16. 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 12/177:00 amJAC - DCA
1 stop5h 54mUnited Airlines
Fri 12/196:30 amDCA - JAC
1 stop7h 04mUnited Airlines
Deal found 12/16$719
This Delta deal was found by Cheapflights users on 12/16. 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 12/177:00 amJAC - DCA
1 stop7h 01mDelta
Thu 12/1812:05 pmDCA - JAC
2 stops11h 24mDelta
Deal found 12/16$724
This American Airlines deal was found by Cheapflights users on 12/17. 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.
Sun 12/217:00 amIDA - DCA
2 stops11h 13mAmerican Airlines
Tue 12/2310:49 amDCA - IDA
2 stops13h 32mAmerican Airlines
Deal found 12/17$741
This deal was found by Cheapflights users on 12/16. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/221:30 pmJAC - DCA
1 stop8h 15mAmerican Airlines
Tue 12/237:43 amDCA - JAC
1 stop8h 48mAmerican Airlines
Deal found 12/16$776

Find flight deals from Idaho to Reagan-National

Keep the following information in mind while searching for Idaho to Reagan-National flight deals. Data was last updated December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$203
(Expedia)

One-way from

$91
(Frontier)

Popular in

January

Cheapest in

August

Average price

$584
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.
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From Idaho to Washington, D.C. Reagan-National
Search Deals
One-way flight from Idaho to Washington, D.C. Reagan-National
Search Deals
Highest demand for flights based on searches. 26% potential increase in price ($169 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 10% potential price decrease ($47 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Idaho to Reagan-National 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 18, 2025.
Use the filters below to find and compare flights from Idaho to Washington, D.C. Reagan-National Airport that are best for you.

Fly from

Idaho

Fly to

Reagan-National

Route

Depart

Return

Price

SpokaneWashington, D.C.

GEG - DCA

GEGDCA

Spokane

Thu 2/19

12:22 pm-12:04 pm

1 stop20h 42m

Washington, D.C. Reagan-National

Wed 2/25

8:00 am-11:27 am

1 stop30h 27m

$263

BoiseWashington, D.C.

BOI - DCA

BOIDCA

Boise Air Term. Gowen Fld

Sat 1/17

5:40 am-4:01 pm

1 stop8h 21m

Washington, D.C. Reagan-National

Mon 1/19

8:00 am-1:25 pm

1 stop7h 25m

$270

SpokaneWashington, D.C.

GEG - DCA

GEGDCA

Spokane

Thu 1/15

11:22 am-9:59 pm

1 stop7h 37m

Washington, D.C. Reagan-National

Sun 1/18

8:00 am-6:21 pm

2 stops13h 21m

$285

BoiseWashington, D.C.

BOI - DCA

BOIDCA

Boise Air Term. Gowen Fld

Thu 1/22

9:02 am-9:59 pm

1 stop10h 57m

Washington, D.C. Reagan-National

Sat 1/24

8:00 am-3:10 pm

1 stop9h 10m

$287

BoiseWashington, D.C.

BOI - DCA

BOIDCA

Boise Air Term. Gowen Fld

Wed 3/4

5:40 am-3:20 pm

1 stop7h 40m

Washington, D.C. Reagan-National

Wed 3/11

4:45 pm-11:59 pm

1 stop9h 14m

$287

BoiseWashington, D.C.

BOI - DCA

BOIDCA

Boise Air Term. Gowen Fld

Wed 3/4

5:40 am-3:20 pm

1 stop7h 40m

Washington, D.C. Reagan-National

Sun 3/8

4:45 pm-11:59 pm

1 stop9h 14m

$287

BoiseWashington, D.C.

BOI - DCA

BOIDCA

Boise Air Term. Gowen Fld

Wed 1/14

5:40 am-3:20 pm

1 stop7h 40m

Washington, D.C. Reagan-National

Fri 1/30

4:44 pm-11:59 pm

1 stop9h 15m

$287

SpokaneWashington, D.C.

GEG - DCA

GEGDCA

Spokane

Wed 2/18

5:00 am-3:20 pm

1 stop7h 20m

Washington, D.C. Reagan-National

Tue 2/24

4:44 pm-12:04 am

1 stop10h 20m

$287

SpokaneWashington, D.C.

GEG - DCA

GEGDCA

Spokane

Fri 1/9

7:25 pm-3:20 pm

1 stop16h 55m

Washington, D.C. Reagan-National

Mon 1/12

4:44 pm-8:40 am

1 stop18h 56m

$287

SpokaneWashington, D.C.

GEG - DCA

GEGDCA

Spokane

Fri 1/9

7:25 pm-3:20 pm

1 stop16h 55m

Washington, D.C. Reagan-National

Tue 1/13

4:44 pm-8:40 am

1 stop18h 56m

$287

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 60 results
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Best time to book a flight from Idaho to Reagan-National

Have a flexible travel schedule? Discover the best time to fly to Reagan-National 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. Reagan-National Airport

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

Currently, July is the cheapest month in which you can book a flight from Idaho to Washington, D.C. Reagan-National Airport (average of $197). Flying from Idaho to Washington, D.C. Reagan-National Airport in September is currently the most expensive (average of $401). 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 DCA?

Find hourly flight availability from Idaho to Reagan-National. 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.

A simple way to save on the total cost of your ticket is to fly from Idaho to Washington, D.C. Reagan-National Airport in the evening. If you’re flexible enough to do this you can expect to save up to 42% on your trip compared to booking a flight in the morning.

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

Related info for your journey

Find useful and relevant information for your journey from Idaho to Reagan-National. 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. Reagan-National Airport?

    Frontier, Alaska Airlines, and Delta can get you from Idaho to Washington, D.C. Reagan-National Airport in just under 7h 40m. Your travel time can differ by up to 13h 02m. Idaho and Washington, D.C. Reagan-National Airport are separated by a distance of 2042 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    The cheapest airlines for a one-way flight from Idaho to Washington, D.C. Reagan-National Airport are Frontier ($104), Delta ($125), and American Airlines ($185).

  • What are the most popular routes from Idaho to Washington, D.C. Reagan-National Airport?

    Most travelers choose Boise Air Term. Gowen Fld - Washington, D.C. Reagan-National, Spokane - Washington, D.C. Reagan-National or Idaho Falls Fanning Field - Washington, D.C. Reagan-National when deciding on the best route from Idaho to Washington, D.C. Reagan-National Airport.

  • Can I find deals for flights from Idaho to Reagan-National that include hotel bookings?

    Yes. In addition to deals on Idaho to Reagan-National flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Idaho to Reagan-National?

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

  • Can I find deals for business class flights from Idaho to Reagan-National?

    Yes. Cheapflights offers flight deals from Idaho to Reagan-National 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. Reagan-National Airport?

    Currently, July is the cheapest month in which you can book a flight from Idaho to Washington, D.C. Reagan-National Airport (average of $197). Flying from Idaho to Washington, D.C. Reagan-National Airport in September is currently the most expensive (average of $401). 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

Traveling to a place near Washington, D.C. Reagan-National Airport?

Book flights to Washington, D.C. Reagan-National Airport if you plan to visit one of these locations
Alexandria
Woodbridge
Tysons
Arlington
Owings Mills
Springfield
Hanover
Silver Spring
Fredericksburg
Linthicum Heights
Rockville
Laurel
Towson
Manassas
National Harbor
Bowie
Largo
McLean
Clinton
Cordova

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Alternative routes for Idaho to Reagan-National

See prices for flight routes from nearby airports that may be better suited for you.
Dallas/Fort Worth to Baltimore flights
Los Angeles to Reagan-National flights
Dallas/Fort Worth to Dulles Intl flights
Atlanta to Baltimore flights
Los Angeles to Dulles Intl flights
Los Angeles to Baltimore flights
Boston to Baltimore flights
Atlanta to Dulles Intl flights
Dallas/Fort Worth to Reagan-National flights
Atlanta to Reagan-National flights
O'Hare Intl to Reagan-National flights
Orlando to Dulles Intl flights
Boston to Reagan-National flights
Seattle to Reagan-National flights
San Francisco to Reagan-National flights
San Francisco to Dulles Intl flights
Seattle to Dulles Intl flights
O'Hare Intl to Baltimore flights
Denver to Baltimore flights
Denver to Dulles Intl flights
Boston to Dulles Intl flights
Hobby to Dulles Intl flights
Hobby to Baltimore flights
San Francisco to Baltimore flights
LaGuardia to Reagan-National flights
Hobby to Reagan-National flights
John F Kennedy Intl to Reagan-National flights
Tampa to Baltimore flights
Orlando to Baltimore flights
Orlando to Reagan-National flights
Seattle to Baltimore flights
Tampa to Dulles Intl flights
Miami to Baltimore flights
George Bush Intcntl to Dulles Intl flights
John F Kennedy Intl to Dulles Intl flights
Miami to Dulles Intl flights
Denver to Reagan-National flights
O'Hare Intl to Dulles Intl flights
Detroit to Reagan-National flights
George Bush Intcntl to Reagan-National flights
Detroit to Baltimore flights
George Bush Intcntl to Baltimore flights
Newark to Dulles Intl flights
San Diego to Dulles Intl flights
Tampa to Reagan-National flights
Charlotte to Baltimore flights
Fort Lauderdale to Baltimore flights
Detroit to Dulles Intl flights
Charlotte to Dulles Intl flights
Miami to Reagan-National flights

Top 5 airlines flying from Idaho to Reagan-National

Discover the top 5 airlines that operate flights from Idaho to Reagan-National. 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 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$249Average$494FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$300Average$392FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$300Average$544FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$349Average$563FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$403Average$548FlexibilityNo cancel feeOn-time63%

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