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$151+ Cheap flights from Reagan-National (DCA) 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 2/16. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — BOI
Feb 4 — Feb 111
Tue 2/4
Tue 2/11
1 adult, Economy
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Cheap flight deals from Reagan-National to Idaho

Discover tips and strategies to find the most affordable flight options for your journey from Reagan-National (DCA) 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 January 30, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$301
(Delta)

One-way from

$151
(American Airlines)

Popular in

December

Cheapest in

August

Average price

$455
Provider with most accurate pricing for Washington, D.C. (WAS)-Boise Air Term. Gowen Fld flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Boise Air Term. Gowen Fld flights.
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From Washington, D.C. Reagan-National to Idaho
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One-way flight from Washington, D.C. Reagan-National to Idaho
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Highest demand for flights based on searches. 7% potential increase in price ($39 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($19 potential savings vs. average RT price).
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Average for round-trip flights in January 2025
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Find flight deals from Reagan-National to Idaho

Cheapest flights from Reagan-National to Idaho
Explore the most affordable flight options available from Reagan-National to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 30, 2025.

This Delta deal was found by Cheapflights users on 1/30. 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.
Sat 3/17:34 amDCA - BOI
1 stop8h 31mDelta
Thu 3/63:00 pmBOI - DCA
1 stop6h 43mDelta
Deal found 1/30$301
This Delta deal was found by Cheapflights users on 1/29. 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 2/246:59 pmDCA - GEG
1 stop6h 53mDelta
Wed 3/52:10 pmGEG - DCA
1 stop6h 33mDelta
Deal found 1/29$307
This Delta deal was found by Cheapflights users on 1/29. 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 4/264:40 pmDCA - LWS
1 stop8h 53mDelta
Tue 4/297:05 amLWS - DCA
2 stops12h 46mDelta
Deal found 1/29$329
This Southwest deal was found by Cheapflights users on 1/29. 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.
Tue 2/252:00 pmDCA - GEG
2 stops11h 05mSouthwest
Tue 3/45:30 amGEG - DCA
2 stops9h 35mSouthwest
Deal found 1/29$347
This Alaska Airlines deal was found by Cheapflights users on 1/29. 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 8/239:30 amDCA - GEG
1 stop16h 03mAlaska Airlines
Fri 8/296:00 amGEG - DCA
1 stop7h 15mAlaska Airlines
Deal found 1/29$376
This Delta deal was found by Cheapflights users on 1/30. 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.
Sat 2/225:10 pmDCA - IDA
1 stop7h 34mDelta
Tue 2/256:00 amIDA - DCA
1 stop8h 00mDelta
Deal found 1/30$395
This Delta deal was found by Cheapflights users on 1/30. 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.
Sun 2/237:00 amDCA - JAC
1 stop8h 18mDelta
Fri 2/282:28 pmJAC - DCA
1 stop6h 11mDelta
Deal found 1/30$395
This American Airlines deal was found by Cheapflights users on 1/29. 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 2/235:09 amDCA - JAC
2 stops11h 41mAmerican Airlines
Fri 2/283:47 pmJAC - DCA
1 stop6h 58mAmerican Airlines
Deal found 1/29$400
This American Airlines deal was found by Cheapflights users on 1/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/2210:37 amDCA - IDA
2 stops13h 34mAmerican Airlines
Tue 2/257:31 amIDA - DCA
2 stops12h 44mAmerican Airlines
Deal found 1/30$405
This Southwest deal was found by Cheapflights users on 1/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/254:35 pmDCA - BOI
1 stop8h 10mSouthwest
Sun 3/305:00 amBOI - DCA
2 stops8h 40mSouthwest
Deal found 1/30$407
This American Airlines deal was found by Cheapflights users on 1/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/1212:59 pmDCA - BOI
1 stop10h 53mAmerican Airlines
Tue 2/181:56 pmBOI - DCA
1 stop15h 04mAmerican Airlines
Deal found 1/30$449
This United Airlines deal was found by Cheapflights users on 1/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/2911:45 amDCA - JAC
1 stop8h 30mUnited Airlines
Tue 8/57:45 amJAC - DCA
1 stop5h 59mUnited Airlines
Deal found 1/30$485

Find flights from Reagan-National to Idaho within your budget

Customize your flight search to find flights from Reagan-National 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 2,558,603 searches. Data last updated January 30, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

Washington, D.C.Boise

DCA - BOI

DCABOI

Washington, D.C. Reagan-National

Sat 3/1

7:34 am-2:05 pm

1 stop8h 31m

Boise Air Term. Gowen Fld

Thu 3/6

3:00 pm-11:43 pm

1 stop6h 43m

$301

Washington, D.C.Spokane

DCA - GEG

DCAGEG

Washington, D.C. Reagan-National

Mon 2/24

6:59 pm-10:52 pm

1 stop6h 53m

Spokane

Wed 3/5

2:10 pm-11:43 pm

1 stop6h 33m

$307

Washington, D.C.Spokane

DCA - GEG

DCAGEG

Washington, D.C. Reagan-National

Tue 4/22

4:25 pm-11:15 pm

2 stops9h 50m

Spokane

Fri 4/25

9:50 am-10:10 pm

2 stops9h 20m

$368

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Sat 2/22

5:10 pm-10:44 pm

1 stop7h 34m

Idaho Falls Fanning Field

Tue 2/25

6:00 am-4:00 pm

1 stop8h 00m

$395

Washington, D.C.Jackson

DCA - JAC

DCAJAC

Washington, D.C. Reagan-National

Sun 2/23

7:00 am-1:18 pm

1 stop8h 18m

Jackson Hole

Fri 2/28

2:28 pm-10:39 pm

1 stop6h 11m

$395

Washington, D.C.Jackson

DCA - JAC

DCAJAC

Washington, D.C. Reagan-National

Sun 2/23

6:44 am-2:50 pm

2 stops10h 06m

Jackson Hole

Fri 2/28

12:47 pm-11:20 pm

1 stop8h 33m

$400

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Sat 2/22

10:37 am-10:11 pm

2 stops13h 34m

Idaho Falls Fanning Field

Tue 2/25

7:31 am-10:15 pm

2 stops12h 44m

$405

Washington, D.C.Boise

DCA - BOI

DCABOI

Washington, D.C. Reagan-National

Tue 3/25

4:35 pm-10:45 pm

1 stop8h 10m

Boise Air Term. Gowen Fld

Sun 3/30

5:00 am-3:40 pm

2 stops8h 40m

$407

Washington, D.C.Spokane

DCA - GEG

DCAGEG

Washington, D.C. Reagan-National

Sat 3/1

5:25 pm-11:44 pm

1 stop9h 19m

Spokane

Wed 3/5

7:00 am-8:59 pm

1 stop10h 59m

$447

Washington, D.C.Boise

DCA - BOI

DCABOI

Washington, D.C. Reagan-National

Wed 2/12

12:59 pm-9:52 pm

1 stop10h 53m

Boise Air Term. Gowen Fld

Tue 2/18

1:56 pm-7:00 am

1 stop15h 04m

$449

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/29

Showing 1-10 of 38 results
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Best time to book a flight from Reagan-National to Idaho

Have a flexible travel schedule? Discover the best time to fly to Idaho from Reagan-National 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 Reagan-National to Idaho

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

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

Currently, October is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Idaho (average of $314). Flying from Washington, D.C. Reagan-National Airport 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 DCA to ID?

Find hourly flight availability from Reagan-National 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 January 30, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Washington, D.C. Reagan-National Airport to Idaho as you normally would.

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 January 30, 2025.
To help decide which airline to fly from Washington, D.C. to Idaho, see what other customers have to say about Southwest, Alaska Airlines and Delta. 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
4,585 reviews

Boarding

8.2

Entertainment

7.7

Food

7.1

Overall

8.1

Comfort

8.1

Crew

8.7

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest
8.1
Very good
4,585 reviews
Southwest
8.1
Very good
4,585 reviews

Boarding

8.2

Entertainment

7.7

Food

7.1

Overall

8.1

Comfort

8.1

Crew

8.7

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Alaska Airlines
8.0
Very good
9,688 reviews
Southwest
8.1
Very good
4,585 reviews

Boarding

8.2

Entertainment

7.7

Food

7.1

Overall

8.1

Comfort

8.1

Crew

8.7

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Delta
8.0
Very good
8,454 reviews
Southwest
8.1
Very good
4,585 reviews

Boarding

8.2

Entertainment

7.7

Food

7.1

Overall

8.1

Comfort

8.1

Crew

8.7

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

United Airlines
7.4
Good
8,913 reviews
Southwest
8.1
Very good
4,585 reviews

Boarding

8.2

Entertainment

7.7

Food

7.1

Overall

8.1

Comfort

8.1

Crew

8.7

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,585 reviews

Boarding

8.2

Entertainment

7.7

Food

7.1

Overall

8.1

Comfort

8.1

Crew

8.7

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Related info for your journey

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

    $151 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on Delta and Southwest, with prices starting from $154 and $194, respectively.

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

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

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

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

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

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

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

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

    Currently, October is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Idaho (average of $314). Flying from Washington, D.C. Reagan-National Airport 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.

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Alternative routes for Reagan-National to Idaho

See prices for flight routes from nearby airports that may be better suited for you.
Reagan-National to Miami flights
Dulles Intl to Orlando flights
Baltimore to Fort Lauderdale flights
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Dulles Intl to Dallas/Fort Worth flights
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Dulles Intl to Sky Harbor Intl flights
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Baltimore to Las Vegas flights
Reagan-National to Dallas/Fort Worth flights
Baltimore to O'Hare Intl flights
Reagan-National to Fort Lauderdale flights
Dulles Intl to O'Hare Intl flights
Baltimore to Denver flights
Dulles Intl to Hobby flights
Reagan-National to O'Hare Intl flights
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Reagan-National to Seattle flights
Baltimore to New Orleans flights
Dulles Intl to San Francisco flights
Baltimore to Tampa flights
Reagan-National to Denver flights
Dulles Intl to Seattle flights
Dulles Intl to Los Angeles flights
Reagan-National to Atlanta flights
Reagan-National to Sky Harbor Intl flights
Reagan-National to Tampa flights
Dulles Intl to George Bush Intcntl flights
Reagan-National to Hobby flights
Dulles Intl to Boston flights
Dulles Intl to West Palm Beach flights
Baltimore to San Francisco flights
Dulles Intl to Austin flights
Reagan-National to West Palm Beach flights
Reagan-National to Boston flights
Baltimore to Seattle flights
Baltimore to George Bush Intcntl flights

Top 3 airlines flying from Reagan-National to Idaho

Discover the top 3 airlines that operate flights from Reagan-National 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 2,558,603 searches. Data last updated January 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$316Average$474FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$407Average$717FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$466Average$866FlexibilityNo cancel feeOn-time69%
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