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$100+ 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 9/10. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — BOI
Jun 20 — Jun 271
Fri 6/20
Fri 6/27
1 adult, Economy
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Cheap flight deals from Reagan-National to Idaho

Keep the following information in mind while searching for Reagan-National to Idaho flight deals. Data was last updated June 15, 2025.

Round-trip from

$284
(Hawaiian Airlines)

One-way from

$100
(Delta)

Popular in

December

Cheapest in

April

Average price

$453
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. 19% potential increase in price ($104 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($26 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 15, 2025.

This Hawaiian Airlines deal was found by Cheapflights users on 6/14. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/35:49 pmDCA - BOI
1 stop8h 10mHawaiian Airlines
Sat 9/610:00 amBOI - DCA
1 stop9h 44mHawaiian Airlines
Deal found 6/14$284
This United Airlines deal was found by Cheapflights users on 6/12. 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.
Sat 8/236:25 amDCA - BOI
1 stop7h 06mUnited Airlines
Sun 8/3112:27 pmBOI - DCA
1 stop8h 16mUnited Airlines
Deal found 6/12$285
This American Airlines deal was found by Cheapflights users on 6/12. 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 8/235:00 amDCA - BOI
2 stops9h 46mAmerican Airlines
Sun 8/311:07 pmBOI - DCA
1 stop8h 43mAmerican Airlines
Deal found 6/12$290
This Delta deal was found by Cheapflights users on 6/13. 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 9/184:40 pmDCA - BOI
1 stop9h 19mDelta
Sat 9/273:00 pmBOI - DCA
1 stop6h 31mDelta
Deal found 6/13$291
This American Airlines deal was found by Cheapflights users on 6/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/175:20 pmDCA - GEG
1 stop8h 16mAmerican Airlines
Fri 8/221:08 pmGEG - DCA
1 stop7h 42mAmerican Airlines
Deal found 6/14$298
This Delta deal was found by Cheapflights users on 6/12. 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 8/56:40 amDCA - GEG
1 stop9h 37mDelta
Fri 8/811:09 pmGEG - DCA
1 stop7h 00mDelta
Deal found 6/12$299
This Booking.com deal was found by Cheapflights users on 6/14. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/96:00 pmDCA - GEG
1 stop20h 03mFrontier
Tue 7/1511:51 amGEG - DCA
1 stop26h 08mFrontier
Deal found 6/14$305
This FlightHub deal was found by Cheapflights users on 6/14. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/107:00 amDCA - BOI
1 stop6h 46mFrontier
Sun 7/1312:36 pmBOI - DCA
1 stop21h 28mFrontier
Deal found 6/14$315
This Southwest deal was found by Cheapflights users on 6/13. 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.
Fri 9/53:05 pmDCA - GEG
2 stops10h 55mSouthwest
Fri 9/126:45 amGEG - DCA
2 stops10h 35mSouthwest
Deal found 6/13$323
This Alaska Airlines deal was found by Cheapflights users on 6/12. 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 7/198:59 amDCA - GEG
1 stop17h 45mAlaska Airlines
Fri 7/257:00 amGEG - DCA
1 stop10h 59mAlaska Airlines
Deal found 6/12$357
This Hawaiian Airlines deal was found by Cheapflights users on 6/11. 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.
Sat 8/168:00 amDCA - GEG
1 stop9h 40mHawaiian Airlines
Sat 8/235:06 amGEG - DCA
1 stop8h 00mHawaiian Airlines
Deal found 6/11$366
This Southwest deal was found by Cheapflights users on 6/13. 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 9/44:35 pmDCA - BOI
2 stops9h 50mSouthwest
Mon 9/86:15 amBOI - DCA
2 stops9h 20mSouthwest
Deal found 6/13$367

Cheapflights Fare Finder

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 June 15, 2025.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Idaho that are best for you.

Fly from

Reagan-National

Fly to

Idaho

Route

Depart

Return

Price

Washington, D.C.Boise

DCA - BOI

DCABOI

Washington, D.C. Reagan-National

Wed 9/3

5:49 pm-11:59 pm

1 stop8h 10m

Boise Air Term. Gowen Fld

Sat 9/6

10:00 am-9:44 pm

1 stop9h 44m

$284

Washington, D.C.Boise

DCA - BOI

DCABOI

Washington, D.C. Reagan-National

Sat 8/23

6:25 am-11:31 am

1 stop7h 06m

Boise Air Term. Gowen Fld

Sun 8/31

12:27 pm-10:43 pm

1 stop8h 16m

$285

Washington, D.C.Boise

DCA - BOI

DCABOI

Washington, D.C. Reagan-National

Sat 8/23

5:00 am-12:46 pm

2 stops9h 46m

Boise Air Term. Gowen Fld

Sun 8/31

1:07 pm-11:50 pm

1 stop8h 43m

$290

Washington, D.C.Boise

DCA - BOI

DCABOI

Washington, D.C. Reagan-National

Sat 8/23

12:00 pm-7:05 pm

2 stops9h 05m

Boise Air Term. Gowen Fld

Sun 8/31

6:00 am-4:16 pm

2 stops8h 16m

$295

Washington, D.C.Spokane

DCA - GEG

DCAGEG

Washington, D.C. Reagan-National

Sun 8/17

5:20 pm-10:36 pm

1 stop8h 16m

Spokane

Fri 8/22

1:08 pm-11:50 pm

1 stop7h 42m

$298

Washington, D.C.Spokane

DCA - GEG

DCAGEG

Washington, D.C. Reagan-National

Tue 8/5

6:40 am-1:17 pm

1 stop9h 37m

Spokane

Fri 8/8

11:09 pm-9:09 am

1 stop7h 00m

$299

Washington, D.C.Spokane

DCA - GEG

DCAGEG

Washington, D.C. Reagan-National

Wed 7/9

6:00 pm-11:03 am

1 stop20h 03m

Spokane

Tue 7/15

11:51 am-4:59 pm

1 stop26h 08m

$305

Washington, D.C.Boise

DCA - BOI

DCABOI

Washington, D.C. Reagan-National

Thu 7/10

7:00 am-11:46 am

1 stop6h 46m

Boise Air Term. Gowen Fld

Sun 7/13

12:36 pm-12:04 pm

1 stop21h 28m

$315

Washington, D.C.Spokane

DCA - GEG

DCAGEG

Washington, D.C. Reagan-National

Fri 9/5

3:05 pm-11:00 pm

2 stops10h 55m

Spokane

Fri 9/12

6:45 am-8:20 pm

2 stops10h 35m

$323

Washington, D.C.Spokane

DCA - GEG

DCAGEG

Washington, D.C. Reagan-National

Sat 7/19

8:59 am-11:44 pm

1 stop17h 45m

Spokane

Fri 7/25

7:00 am-8:59 pm

1 stop10h 59m

$357

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

Showing 1-10 of 56 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.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Reagan-National Airport to Idaho

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 $395). 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 June 15, 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 June 15, 2025.
To help decide which airline to fly from Washington, D.C. to Idaho, see what other customers have to say about Alaska Airlines, Southwest and Delta. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Comfort

7.8

Overall

8.0

Boarding

8.1

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Comfort

7.8

Overall

8.0

Boarding

8.1

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,283 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Comfort

7.8

Overall

8.0

Boarding

8.1

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,961 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Comfort

7.8

Overall

8.0

Boarding

8.1

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.8
Good
2,499 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Comfort

7.8

Overall

8.0

Boarding

8.1

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,793 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Comfort

7.8

Overall

8.0

Boarding

8.1

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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?

    $100 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on Frontier and Alaska Airlines, with prices starting from $100 and $142, 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 $395). 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

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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.
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Reagan-National to Los Angeles flights
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Dulles Intl to Dallas/Fort Worth flights
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Dulles Intl to Boston flights
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Dulles Intl to Hobby flights
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Baltimore to Midway flights
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Baltimore to Orlando flights
Dulles Intl to Fort Lauderdale flights
Reagan-National to Orlando flights
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Baltimore to Atlanta flights
Dulles Intl to San Diego flights
Dulles Intl to George Bush Intcntl flights
Baltimore to George Bush Intcntl flights
Dulles Intl to Denver flights
Dulles Intl to Tampa flights
Reagan-National to San Diego flights
Dulles Intl to New Orleans flights
Reagan-National to Atlanta flights
Reagan-National to Hobby flights
Dulles Intl to Honolulu flights
Baltimore to New Orleans flights
Dulles Intl to Ontario flights
Reagan-National to Denver flights
Reagan-National to Midway 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 June 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$300Average$408FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$358Average$577FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$415Average$711FlexibilityNo cancel feeOn-time69%

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