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Reagan-National

$92+ 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 3/5. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — DCA
Mar 5 — Mar 121
Thu 3/5
Thu 3/12
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 February 3, 2026.

This Alaska Airlines deal was found by Cheapflights users on 2/3. 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.
Tue 3/311:54 am
BOI
-
DCA
1 stop8h 05m
Alaska Airlines
Tue 3/105:06 pm
DCA
-
BOI
1 stop8h 53m
Alaska Airlines
Deal found 2/3$247
This Delta deal was found by Cheapflights users on 2/1. 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 4/255:40 am
BOI
-
DCA
1 stop7h 47m
Delta
Wed 4/296:00 am
DCA
-
BOI
1 stop9h 07m
Delta
Deal found 2/1$257
This Delta deal was found by Cheapflights users on 2/1. 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 3/175:00 am
GEG
-
DCA
1 stop7h 23m
Delta
Wed 3/254:40 pm
DCA
-
GEG
1 stop10h 23m
Delta
Deal found 2/1$257
This Delta deal was found by Cheapflights users on 2/3. 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.
Tue 3/35:50 am
BOI
-
DCA
2 stops10h 14m
Delta
Tue 3/105:12 pm
DCA
-
BOI
1 stop6h 59m
Delta
Deal found 2/3$262
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/811:32 am
GEG
-
DCA
1 stop22h 30m
Frontier
Wed 3/116:00 pm
DCA
-
GEG
1 stop19h 47m
Frontier
Deal found 2/2$269
This Delta deal was found by Cheapflights users on 2/3. 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.
Fri 2/62:40 pm
JAC
-
DCA
1 stop6h 52m
Delta
Mon 2/96:59 am
DCA
-
JAC
1 stop8h 31m
Delta
Deal found 2/3$277
This Expedia deal was found by Cheapflights users on 2/2. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/1211:32 am
GEG
-
DCA
1 stop7h 27m
Multiple Airlines
Tue 3/176:59 pm
DCA
-
GEG
1 stop19h 38m
Multiple Airlines
Deal found 2/2$280
This Delta deal was found by Cheapflights users on 2/3. 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.
Fri 2/62:40 pm
JAC
-
DCA
1 stop6h 52m
Delta
Tue 2/109:54 am
DCA
-
JAC
2 stops8h 30m
Delta
Deal found 2/3$282
This Delta deal was found by Cheapflights users on 2/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/81:10 pm
JAC
-
DCA
2 stops25h 50m
Delta
Tue 4/149:45 am
DCA
-
JAC
2 stops8h 24m
Delta
Deal found 2/2$302
This Expedia deal was found by Cheapflights users on 2/1. 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 2/1912:36 pm
BOI
-
DCA
1 stop26h 23m
Multiple Airlines
Mon 2/238:59 am
DCA
-
BOI
1 stop16h 31m
Multiple Airlines
Deal found 2/1$307
This Kiwi.com deal was found by Cheapflights users on 2/1. 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.
Sun 3/2212:15 pm
BOI
-
DCA
1 stop22h 47m
Frontier
Wed 3/258:00 am
DCA
-
BOI
1 stop29h 20m
Frontier
Deal found 2/1$310
This Delta deal was found by Cheapflights users on 2/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/126:00 am
BOI
-
DCA
1 stop7h 40m
Delta
Wed 8/267:40 am
DCA
-
BOI
1 stop8h 23m
Delta
Deal found 2/2$311

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 February 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$247
(Alaska Airlines)

One-way from

$92
(Trip.com)

Popular in

January

Cheapest in

August

Average price

$329
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 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. 28% potential increase in price ($181 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 12% potential price decrease ($51 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

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 February 3, 2026.
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

Sat 3/7

5:50 am-3:20 pm

1 stop7h 30m

Washington, D.C. Reagan-National

Sat 3/14

6:00 am-12:38 pm

1 stop8h 38m

$257

BoiseWashington, D.C.

BOI - DCA

BOIDCA

Boise Air Term. Gowen Fld

Tue 3/3

10:53 am-9:39 pm

1 stop8h 46m

Washington, D.C. Reagan-National

Tue 3/10

3:30 pm-10:56 pm

1 stop9h 26m

$257

BoiseWashington, D.C.

BOI - DCA

BOIDCA

Boise Air Term. Gowen Fld

Tue 3/10

3:01 pm-11:34 pm

1 stop6h 33m

Washington, D.C. Reagan-National

Sat 3/14

6:00 am-12:38 pm

1 stop8h 38m

$257

BoiseWashington, D.C.

BOI - DCA

BOIDCA

Boise Air Term. Gowen Fld

Sat 4/25

5:40 am-3:27 pm

1 stop7h 47m

Washington, D.C. Reagan-National

Wed 4/29

6:00 am-1:07 pm

1 stop9h 07m

$257

BoiseWashington, D.C.

BOI - DCA

BOIDCA

Boise Air Term. Gowen Fld

Tue 3/3

5:20 am-6:33 pm

2 stops11h 13m

Washington, D.C. Reagan-National

Tue 3/10

5:12 pm-10:11 pm

1 stop6h 59m

$262

BoiseWashington, D.C.

BOI - DCA

BOIDCA

Boise Air Term. Gowen Fld

Sat 4/25

3:23 pm-11:43 pm

1 stop6h 20m

Washington, D.C. Reagan-National

Tue 4/28

2:34 pm-11:57 pm

2 stops11h 23m

$262

JacksonWashington, D.C.

JAC - DCA

JACDCA

Jackson Hole

Wed 4/8

1:10 pm-5:00 pm

2 stops25h 50m

Washington, D.C. Reagan-National

Tue 4/14

9:45 am-4:09 pm

2 stops8h 24m

$302

SpokaneWashington, D.C.

GEG - DCA

GEGDCA

Spokane

Thu 3/12

2:15 pm-11:35 pm

1 stop6h 20m

Washington, D.C. Reagan-National

Tue 3/17

2:40 pm-11:50 pm

2 stops12h 10m

$315

SpokaneWashington, D.C.

GEG - DCA

GEGDCA

Spokane

Tue 7/7

5:00 pm-8:37 am

2 stops12h 37m

Washington, D.C. Reagan-National

Tue 7/21

4:40 pm-10:48 pm

1 stop9h 08m

$316

SpokaneWashington, D.C.

GEG - DCA

GEGDCA

Spokane

Tue 6/2

2:04 pm-11:53 pm

1 stop6h 49m

Washington, D.C. Reagan-National

Wed 6/10

7:43 am-1:14 pm

1 stop8h 31m

$329

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/3

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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, May is the cheapest month in which you can book a flight from Idaho to Washington, D.C. Reagan-National Airport (average of $204). Flying from Idaho to Washington, D.C. Reagan-National Airport in September is currently the most expensive (average of $411). 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.

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, United Airlines, and American Airlines can get you from Idaho to Washington, D.C. Reagan-National Airport in just under 6h 49m. Your travel time can differ by up to 1h 57m. Idaho and Washington, D.C. Reagan-National Airport are separated by a distance of 2099 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 ($90), Delta ($125), and American Airlines ($185).

  • 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 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, May is the cheapest month in which you can book a flight from Idaho to Washington, D.C. Reagan-National Airport (average of $204). Flying from Idaho to Washington, D.C. Reagan-National Airport in September is currently the most expensive (average of $411). 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
Silver Spring
Herndon
Fredericksburg
Hanover
Linthicum Heights
Rockville
Laurel
Towson
Upper Marlboro
Manassas
Largo
Bowie
McLean
Clinton

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 Reagan-National

See prices for flight routes from nearby airports that may be better suited for you.
Boston to Baltimore flights
Dallas/Fort Worth to Dulles Intl flights
Dallas/Fort Worth to Baltimore flights
Atlanta to Dulles Intl flights
Los Angeles to Reagan-National flights
Boston to Dulles Intl flights
Atlanta to Baltimore flights
Dallas/Fort Worth to Reagan-National flights
Fort Lauderdale to Dulles Intl flights
Orlando to Dulles Intl flights
Boston to Reagan-National flights
Los Angeles to Baltimore flights
Seattle to Reagan-National flights
O'Hare Intl to Reagan-National flights
Los Angeles to Dulles Intl flights
O'Hare Intl to Dulles Intl flights
O'Hare Intl to Baltimore flights
Miami to Dulles Intl flights
Seattle to Dulles Intl flights
Atlanta to Reagan-National flights
Hobby to Reagan-National flights
San Francisco to Reagan-National flights
Orlando to Reagan-National flights
Hobby to Dulles Intl flights
Orlando to Baltimore flights
San Francisco to Dulles Intl flights
Fort Lauderdale to Baltimore flights
Seattle to Baltimore flights
George Bush Intcntl to Reagan-National flights
San Francisco to Baltimore flights
George Bush Intcntl to Dulles Intl flights
Denver to Baltimore flights
Hobby to Baltimore flights
Tampa to Reagan-National flights
Miami to Baltimore flights
Denver to Dulles Intl flights
Detroit to Dulles Intl flights
Tampa to Dulles Intl flights
Austin to Dulles Intl flights
Fort Lauderdale to Reagan-National flights
LaGuardia to Reagan-National flights
Detroit to Baltimore flights
Sky Harbor Intl to Dulles Intl flights
Denver to Reagan-National flights
Charlotte to Dulles Intl flights
Minneapolis to Reagan-National flights
Minneapolis to Dulles Intl flights
Minneapolis to Baltimore flights
Charlotte to Baltimore 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 February 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$194Average$509FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$298Average$627FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$300Average$392FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$327Average$627FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$355Average$548FlexibilityNo cancel feeOn-time63%

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