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Reagan-National

$75+ 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 1/15. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — DCA
Dec 4 — Dec 111
Thu 12/4
Thu 12/11
1 adult, Economy
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Find 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 November 4, 2025.

This Kiwi.com deal was found by Cheapflights users on 11/3. 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.
Thu 12/412:08 pmGEG - DCA
1 stop21h 58mFrontier
Sat 12/66:00 pmDCA - GEG
1 stop20h 13mFrontier
Deal found 11/3$226
This Mytrip deal was found by Cheapflights users on 11/3. 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.
Tue 11/2512:17 pmGEG - DCA
1 stop6h 42mFrontier
Wed 12/106:00 pmDCA - GEG
1 stop20h 13mFrontier
Deal found 11/3$241
This Kiwi.com deal was found by Cheapflights users on 11/4. 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 12/2012:54 pmBOI - DCA
1 stop22h 07mFrontier
Sat 1/36:00 pmDCA - BOI
1 stop19h 43mFrontier
Deal found 11/4$253
This Expedia deal was found by Cheapflights users on 11/3. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/412:44 pmBOI - DCA
1 stop7h 15mMultiple Airlines
Sun 12/78:00 amDCA - BOI
1 stop9h 26mMultiple Airlines
Deal found 11/3$265
This Kiwi.com deal was found by Cheapflights users on 11/4. 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.
Thu 12/1812:38 pmBOI - DCA
1 stop22h 23mFrontier
Sat 1/36:00 pmDCA - BOI
1 stop19h 43mFrontier
Deal found 11/4$277
This Delta deal was found by Cheapflights users on 11/3. 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 12/45:20 amBOI - DCA
1 stop8h 07mDelta
Mon 12/84:55 pmDCA - BOI
1 stop9h 09mDelta
Deal found 11/3$287
This Delta deal was found by Cheapflights users on 11/4. 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 12/127:45 pmBOI - DCA
2 stops11h 25mDelta
Sun 12/144:55 pmDCA - BOI
1 stop9h 09mDelta
Deal found 11/4$292
This Mytrip deal was found by Cheapflights users on 11/2. 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.
Thu 11/612:03 pmGEG - DCA
1 stop21h 59mFrontier
Sat 11/86:00 pmDCA - GEG
1 stop20h 08mFrontier
Deal found 11/2$293
This Alaska Airlines deal was found by Cheapflights users on 11/3. 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 12/55:51 amGEG - DCA
1 stop7h 17mAlaska Airlines
Tue 12/95:00 pmDCA - GEG
1 stop10h 24mAlaska Airlines
Deal found 11/3$304
This Delta deal was found by Cheapflights users on 11/3. 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 12/32:15 pmGEG - DCA
1 stop6h 22mDelta
Sat 12/67:00 amDCA - GEG
1 stop8h 02mDelta
Deal found 11/3$317
This Kiwi.com deal was found by Cheapflights users on 11/4. 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 12/2012:54 pmBOI - DCA
1 stop22h 07mMultiple Airlines
Thu 1/16:00 pmDCA - BOI
2 stops23h 04mMultiple Airlines
Deal found 11/4$322
This Delta deal was found by Cheapflights users on 11/4. 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 12/175:50 amBOI - DCA
2 stops11h 09mDelta
Sun 1/45:00 pmDCA - BOI
1 stop9h 04mDelta
Deal found 11/4$329

Cheap 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 November 4, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$226
(Kiwi.com)

One-way from

$75
(Mytrip)

Popular in

March

Cheapest in

August

Average price

$521
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. 2% potential increase in price ($10 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 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 November 4, 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

BoiseWashington, D.C.

BOI - DCA

BOIDCA

Boise Air Term. Gowen Fld

Fri 12/12

7:45 pm-9:10 am

2 stops11h 25m

Washington, D.C. Reagan-National

Sun 12/14

4:55 pm-12:04 am

1 stop9h 09m

$292

SpokaneWashington, D.C.

GEG - DCA

GEGDCA

Spokane

Fri 1/23

9:20 am-10:00 pm

2 stops9h 40m

Washington, D.C. Reagan-National

Mon 1/26

3:10 pm-10:52 pm

2 stops10h 42m

$298

SpokaneWashington, D.C.

GEG - DCA

GEGDCA

Spokane

Thu 3/5

9:20 am-11:30 pm

2 stops11h 10m

Washington, D.C. Reagan-National

Tue 3/10

6:10 am-2:42 pm

2 stops11h 32m

$298

SpokaneWashington, D.C.

GEG - DCA

GEGDCA

Spokane

Sat 12/6

5:51 am-9:59 pm

1 stop13h 08m

Washington, D.C. Reagan-National

Tue 12/9

8:00 am-7:05 pm

1 stop14h 05m

$304

SpokaneWashington, D.C.

GEG - DCA

GEGDCA

Spokane

Fri 12/5

5:51 am-4:08 pm

1 stop7h 17m

Washington, D.C. Reagan-National

Tue 12/9

5:00 pm-12:24 am

1 stop10h 24m

$304

SpokaneWashington, D.C.

GEG - DCA

GEGDCA

Spokane

Sat 12/6

9:00 am-9:59 pm

1 stop9h 59m

Washington, D.C. Reagan-National

Mon 12/8

8:00 am-9:28 pm

1 stop16h 28m

$304

SpokaneWashington, D.C.

GEG - DCA

GEGDCA

Spokane

Wed 1/7

1:38 pm-9:59 pm

1 stop29h 21m

Washington, D.C. Reagan-National

Fri 1/9

5:01 pm-9:25 am

1 stop19h 24m

$311

SpokaneWashington, D.C.

GEG - DCA

GEGDCA

Spokane

Tue 3/3

7:00 am-9:10 pm

1 stop11h 10m

Washington, D.C. Reagan-National

Wed 3/4

8:00 am-12:50 pm

1 stop7h 50m

$316

BoiseWashington, D.C.

BOI - DCA

BOIDCA

Boise Air Term. Gowen Fld

Thu 12/4

12:44 pm-9:59 pm

1 stop7h 15m

Washington, D.C. Reagan-National

Sun 12/7

6:00 pm-9:51 pm

2 stops29h 51m

$321

SpokaneWashington, D.C.

GEG - DCA

GEGDCA

Spokane

Wed 12/3

9:50 am-11:40 pm

2 stops10h 50m

Washington, D.C. Reagan-National

Tue 12/9

4:55 pm-12:11 am

1 stop10h 16m

$322

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/2

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 December is currently the most expensive (average of $475). 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 November 4, 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?

    Delta, Alaska Airlines, and United Airlines can get you from Idaho to Washington, D.C. Reagan-National Airport in just under 8h 07m. Your travel time can differ by up to 5h 01m. Idaho and Washington, D.C. Reagan-National Airport are separated by a distance of 1768 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 ($75), Delta ($156), and American Airlines ($159).

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

    Most travelers choose Spokane - Washington, D.C. Reagan-National, Boise Air Term. Gowen Fld - Washington, D.C. Reagan-National or Jackson Hole - 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 December is currently the most expensive (average of $475). 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
Tysons
Woodbridge
Arlington
Owings Mills
Springfield
Hanover
Silver Spring
Fairfax
Fredericksburg
Falls Church
Linthicum Heights
Manassas
Laurel
Towson
National Harbor
Waldorf
Bowie
Largo
McLean

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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 Dulles Intl flights
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O'Hare Intl to Dulles Intl flights
Boston to Baltimore flights
Dallas/Fort Worth to Baltimore flights
O'Hare Intl to Reagan-National flights
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Hobby to Baltimore flights
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Dallas/Fort Worth to Reagan-National flights
Denver to Dulles Intl flights
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John F Kennedy Intl to Dulles Intl flights
Seattle to Dulles Intl flights
San Francisco to Reagan-National flights
Denver to Baltimore flights
San Francisco to Dulles Intl flights
Midway to Baltimore flights
Midway to Dulles Intl flights
Detroit to Dulles Intl flights
George Bush Intcntl to Dulles Intl flights
Atlanta to Baltimore flights
San Francisco to Baltimore flights
Tampa to Dulles Intl flights
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Boston to Dulles Intl flights
Seattle to Baltimore flights
Minneapolis to Baltimore flights
Detroit to Baltimore flights
George Bush Intcntl to Reagan-National flights
Austin to Dulles Intl flights
Orlando to Dulles Intl flights
Miami to Dulles Intl flights
Denver to Reagan-National flights
Tampa to Reagan-National flights
Orlando to Baltimore flights
George Bush Intcntl to Baltimore flights
John F Kennedy Intl to Reagan-National flights
Minneapolis to Dulles Intl flights
Minneapolis to Reagan-National flights
Tampa to Baltimore flights
Midway to Reagan-National 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 November 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$249Average$503FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$300Average$392FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$300Average$546FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$349Average$629FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$403Average$548FlexibilityNo cancel feeOn-time63%

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