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

$98 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on American Airlines and Delta, with prices starting from $149 and $154, 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.

What are the most popular airlines that fly from Washington, D.C. Reagan-National Airport to Idaho?

Before booking your flight from Washington, D.C. Reagan-National Airport to Idaho check out the most popular airlines for this route: American Airlines, Delta or United Airlines.

How far in advance should I book a flight from Washington, D.C. Reagan-National Airport to Idaho?

To save up to 87% on this flight, we recommend booking at least 26 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Washington, D.C. Reagan-National Airport to Idaho from $350 1-2 weeks out and tickets from $398 for flights departing within the next 72 hours.

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

Due to multiple factors, expect to potentially pay more when booking in December. For low rates, April can be a great choice for travel to Idaho. Flights to Idaho from Washington, D.C. Reagan-National Airport in April are about $461 on average during April, but can be found for as low as $212.

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.

$98+ Flights from Washington, D.C. Reagan-National Airport to Idaho - Compare & Save Big

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Cheap flight deals from Reagan-National to Idaho

Most accurate provider	FlightHub 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$215 (Cheapflightsfares)
One-way from	$98 (Cheapflightsfares)
Popular in	December
Cheapest in	April
Average price	$300

Provider with most accurate pricing for Washington, D.C. (WAS)-Boise Air Term. Gowen Fld flight deals.

Search Deals

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

Search Deals

One-way flight from Washington, D.C. Reagan-National to Idaho

Search Deals

Highest demand for flights based on searches. 14% potential increase in price ($76 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease ($24 potential savings vs. average RT price).

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Average for round-trip flights in April 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 April 25, 2025.

Thu 5/227:00 amDCA - BOI

1 stop6h 51mFrontier

Thu 5/2912:36 pmBOI - DCA

1 stop7h 23mFrontier

Deal found 4/24

$215

Sat 6/76:59 amDCA - GEG

1 stop7h 30mDelta

Wed 6/1812:29 pmGEG - DCA

1 stop8h 12mDelta

Deal found 4/23

$297

Thu 6/57:00 amDCA - GEG

1 stop7h 03mFrontier

Thu 6/1211:58 amGEG - DCA

1 stop7h 01mFrontier

Deal found 4/24

$301

Thu 7/177:40 amDCA - BOI

1 stop8h 20mDelta

Tue 7/2211:30 pmBOI - DCA

1 stop7h 43mDelta

Deal found 4/25

$301

Sat 5/244:17 pmDCA - GEG

1 stop7h 31mUnited Airlines

Sat 5/3111:37 amGEG - DCA

1 stop8h 05mUnited Airlines

Deal found 4/24

$314

Sat 6/75:00 pmDCA - GEG

1 stop9h 54mAlaska Airlines

Wed 6/189:45 amGEG - DCA

1 stop9h 14mAlaska Airlines

Deal found 4/24

$319

Sat 5/245:00 pmDCA - GEG

1 stop9h 54mHawaiian Airlines

Thu 5/299:30 amGEG - DCA

1 stop9h 29mHawaiian Airlines

Deal found 4/24

$331

Sun 8/245:00 pmDCA - BOI

1 stop7h 41mUnited Airlines

Wed 8/275:00 amBOI - DCA

1 stop8h 06mUnited Airlines

Deal found 4/25

$336

Fri 8/226:54 amDCA - BOI

1 stop7h 33mAmerican Airlines

Sun 8/311:17 pmBOI - DCA

1 stop8h 33mAmerican Airlines

Deal found 4/25

$337

Sun 8/249:30 amDCA - BOI

1 stop7h 50mSouthwest

Wed 8/276:00 amBOI - DCA

2 stops10h 00mSouthwest

Deal found 4/25

$341

Sat 8/96:05 amDCA - GEG

2 stops11h 25mSouthwest

Fri 8/1512:10 pmGEG - DCA

1 stop8h 15mSouthwest

Deal found 4/24

$352

Sun 7/207:00 amDCA - GEG

1 stop7h 03mMultiple Airlines

Wed 7/239:45 amGEG - DCA

1 stop9h 14mMultiple Airlines

Deal found 4/24

$354

Best flights from Reagan-National to Idaho
Discover carefully curated flight deals from Reagan-National to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 25, 2025.

Thu 5/227:00 amDCA - BOI

1 stop6h 51mFrontier

Thu 5/2912:36 pmBOI - DCA

1 stop7h 23mFrontier

Deal found 4/24

$215

Sat 6/75:15 pmDCA - GEG

1 stop8h 07mDelta

Thu 6/1211:42 amGEG - DCA

1 stop8h 40mDelta

Deal found 4/24

$297

Sat 5/244:17 pmDCA - GEG

1 stop7h 31mUnited Airlines

Sat 5/3111:37 amGEG - DCA

1 stop8h 05mUnited Airlines

Deal found 4/24

$314

Sat 6/75:00 pmDCA - GEG

1 stop9h 54mAlaska Airlines

Wed 6/189:45 amGEG - DCA

1 stop9h 14mAlaska Airlines

Deal found 4/24

$319

Sat 5/245:00 pmDCA - GEG

1 stop9h 54mHawaiian Airlines

Thu 5/299:30 amGEG - DCA

1 stop9h 29mHawaiian Airlines

Deal found 4/24

$331

Fri 5/166:45 amDCA - GEG

1 stop8h 40mAmerican Airlines

Sat 5/171:22 pmGEG - DCA

1 stop8h 24mAmerican Airlines

Deal found 4/25

$332

Sun 8/249:30 amDCA - BOI

1 stop7h 50mSouthwest

Wed 8/276:00 amBOI - DCA

2 stops10h 00mSouthwest

Deal found 4/25

$341

Sun 7/207:00 amDCA - GEG

1 stop7h 03mMultiple Airlines

Wed 7/239:45 amGEG - DCA

1 stop9h 14mMultiple Airlines

Deal found 4/24

$354

Thu 6/57:00 amDCA - GEG

1 stop7h 03mFrontier

Thu 6/1211:58 amGEG - DCA

1 stop7h 01mFrontier

Deal found 4/24

$301

Thu 7/177:40 amDCA - BOI

1 stop8h 20mDelta

Tue 7/2211:30 pmBOI - DCA

1 stop7h 43mDelta

Deal found 4/25

$301

Sun 8/245:00 pmDCA - BOI

1 stop7h 41mUnited Airlines

Wed 8/275:00 amBOI - DCA

1 stop8h 06mUnited Airlines

Deal found 4/25

$336

Fri 8/226:54 amDCA - BOI

1 stop7h 33mAmerican Airlines

Sun 8/311:17 pmBOI - DCA

1 stop8h 33mAmerican Airlines

Deal found 4/25

$337

Last-minute flights from Reagan-National to Idaho
Discover last-minute flight deals from Reagan-National to Idaho. Data last updated April 25, 2025 and is based on user searches.

Wed 4/304:40 pmDCA - GEG

1 stop9h 35mSouthwest

Sat 5/310:55 amGEG - DCA

2 stops7h 50mSouthwest

Deal found 4/24

$702

Wed 4/302:59 pmDCA - GEG

1 stop9h 39mAmerican Airlines

Sat 5/35:34 amGEG - DCA

1 stop7h 53mAmerican Airlines

Deal found 4/25

$738

Wed 4/306:20 amDCA - JAC

2 stops8h 57mUnited Airlines

Wed 4/304:15 pmJAC - DCA

1 stop20h 47mUnited Airlines

Deal found 4/25

$2,142

Mon 5/58:59 amDCA - GEG

1 stop16h 30mAlaska Airlines

Sat 5/177:00 amGEG - DCA

1 stop11h 05mAlaska Airlines

Deal found 4/24

$597

Mon 5/57:25 amDCA - GEG

2 stops10h 38mUnited Airlines

Sat 5/175:29 amGEG - DCA

1 stop6h 33mUnited Airlines

Deal found 4/24

$666

Mon 5/55:47 pmDCA - GEG

2 stops8h 57mDelta

Sat 5/176:00 amGEG - DCA

2 stops11h 36mDelta

Deal found 4/24

$991

Thu 5/86:59 amDCA - BOI

1 stop7h 09mDelta

Wed 6/251:47 pmBOI - DCA

1 stop6h 53mDelta

Deal found 4/24

$451

Sun 5/116:45 amDCA - JAC

1 stop9h 36mAmerican Airlines

Fri 5/163:02 pmJAC - DCA

1 stop7h 44mAmerican Airlines

Deal found 4/25

$487

Tue 5/131:44 pmDCA - GEG

1 stop10h 09mAmerican Airlines

Thu 5/151:22 pmGEG - DCA

1 stop8h 24mAmerican Airlines

Deal found 4/25

$440

Thu 5/227:00 amDCA - BOI

1 stop6h 51mFrontier

Thu 5/2912:36 pmBOI - DCA

1 stop7h 23mFrontier

Deal found 4/24

$215

Fri 5/235:00 pmDCA - BOI

1 stop8h 45mMultiple Airlines

Sun 5/2512:36 pmBOI - DCA

1 stop7h 23mMultiple Airlines

Deal found 4/24

$388

Fri 5/236:38 pmDCA - BOI

1 stop24h 33mAlaska Airlines

Fri 5/308:55 amBOI - DCA

1 stop10h 10mAlaska Airlines

Deal found 4/25

$398

One-way flights from Reagan-National to Idaho
Search for one-way flight options from Reagan-National to Idaho. Find affordable one-way fares based on user searches. Data last updated April 25, 2025.

Thu 5/297:00 amDCA - BOI

1 stop6h 51mFrontier

Deal found 4/24

$98

Tue 5/207:00 amDCA - GEG

1 stop7h 06mFrontier

Deal found 4/25

$100

Tue 6/105:15 pmDCA - GEG

1 stop9h 05mAmerican Airlines

Deal found 4/25

$149

Tue 5/204:00 pmDCA - GEG

2 stops10h 15mDelta

Deal found 4/25

$154

Thu 5/295:10 pmDCA - BOI

2 stops9h 12mDelta

Deal found 4/24

$156

Wed 6/254:55 pmDCA - GEG

1 stop10h 10mSouthwest

Deal found 4/24

$180

Tue 6/102:55 pmDCA - SUN

2 stops9h 08mDelta

Deal found 4/23

$186

Wed 9/107:00 amDCA - IDA

1 stop7h 00mAmerican Airlines

Deal found 4/24

$198

Thu 7/33:25 pmDCA - JAC

1 stop7h 28mAmerican Airlines

Deal found 4/24

$198

Wed 7/3010:00 amDCA - JAC

2 stops12h 29mDelta

Deal found 4/25

$203

Tue 6/108:59 amDCA - GEG

2 stops15h 12mAlaska Airlines

Deal found 4/25

$232

Sat 7/261:00 pmDCA - JAC

1 stop8h 05mUnited Airlines

Deal found 4/25

$243

Cheapflights Fare Finder

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

Fly to

Route

Depart

Return

Price

Washington, D.C.Boise

DCA - BOI

DCABOI

Washington, D.C. Reagan-National

Thu 5/22

7:00 am-11:51 am

1 stop6h 51m

Boise Air Term. Gowen Fld

Thu 5/29

12:36 pm-9:59 pm

1 stop7h 23m

$215

Washington, D.C.Spokane

DCA - GEG

DCAGEG

Washington, D.C. Reagan-National

Sat 6/7

5:15 pm-10:22 pm

1 stop8h 07m

Spokane

Thu 6/12

11:42 am-11:22 pm

1 stop8h 40m

$297

Washington, D.C.Spokane

DCA - GEG

DCAGEG

Washington, D.C. Reagan-National

Thu 6/5

7:00 am-11:03 am

1 stop7h 03m

Spokane

Thu 6/12

11:58 am-9:59 pm

1 stop7h 01m

$301

Washington, D.C.Boise

DCA - BOI

DCABOI

Washington, D.C. Reagan-National

Thu 7/17

7:40 am-2:00 pm

1 stop8h 20m

Boise Air Term. Gowen Fld

Tue 7/22

11:30 pm-9:13 am

1 stop7h 43m

$301

Washington, D.C.Spokane

DCA - GEG

DCAGEG

Washington, D.C. Reagan-National

Sat 5/24

4:17 pm-8:48 pm

1 stop7h 31m

Spokane

Sat 5/31

11:37 am-10:42 pm

1 stop8h 05m

$314

Washington, D.C.Spokane

DCA - GEG

DCAGEG

Washington, D.C. Reagan-National

Sat 6/7

5:00 pm-11:54 pm

1 stop9h 54m

Spokane

Wed 6/18

9:45 am-9:59 pm

1 stop9h 14m

$319

Washington, D.C.Spokane

DCA - GEG

DCAGEG

Washington, D.C. Reagan-National

Sat 5/24

5:00 pm-11:54 pm

1 stop9h 54m

Spokane

Thu 5/29

9:30 am-9:59 pm

1 stop9h 29m

$331

Washington, D.C.Boise

DCA - BOI

DCABOI

Washington, D.C. Reagan-National

Sun 8/24

5:00 pm-10:41 pm

1 stop7h 41m

Boise Air Term. Gowen Fld

Wed 8/27

5:00 am-3:06 pm

1 stop8h 06m

$336

Washington, D.C.Boise

DCA - BOI

DCABOI

Washington, D.C. Reagan-National

Fri 8/22

6:54 am-12:27 pm

1 stop7h 33m

Boise Air Term. Gowen Fld

Sun 8/31

1:17 pm-11:50 pm

1 stop8h 33m

$337

Washington, D.C.Boise

DCA - BOI

DCABOI

Washington, D.C. Reagan-National

Sun 8/24

9:30 am-3:20 pm

1 stop7h 50m

Boise Air Term. Gowen Fld

Wed 8/27

6:00 am-6:00 pm

2 stops10h 00m

$341

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/24

Showing 1-10 of 56 results

...

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 $419). 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?

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

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

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

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

9,927 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Alaska Airlines

8.0

Very good

9,927 reviews

Alaska Airlines

8.0

Very good

9,927 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Southwest

8.0

Very good

4,289 reviews

Alaska Airlines

8.0

Very good

9,927 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Delta

8.0

Very good

7,920 reviews

Alaska Airlines

8.0

Very good

9,927 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Hawaiian Airlines

7.9

Good

2,393 reviews

Alaska Airlines

8.0

Very good

9,927 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

United Airlines

7.4

Good

8,685 reviews

Alaska Airlines

8.0

Very good

9,927 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Related info for your journey

What are the cheapest airlines to fly from Washington, D.C. Reagan-National Airport to Idaho one-way?
$98 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on American Airlines and Delta, with prices starting from $149 and $154, 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 $419). 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

Browse thousands of different options on Cheapflights for your next trip

Top 3 airlines flying from Reagan-National to Idaho

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$310	Average$442	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$388	Average$607	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$415	Average$698	FlexibilityNo cancel fee	On-time69%

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$98+ 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 5/29. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Reagan-National to Idaho with Cheapflights

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3. Compare prices and book

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 April 25, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Reagan-National to Idaho

Cheapest flights from Reagan-National to IdahoExplore 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 April 25, 2025.

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 April 25, 2025.

Cheapflights Fare Finder

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

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.

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?

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 April 25, 2025.

Rainfall in Idaho by month

Plan your trip to Idaho by taking into account the average rainfall totals by month.

Temperature in Idaho by month

Plan your trip to Idaho by taking into account the average temperature totals by month.

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 April 25, 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.

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?

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

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

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

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

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

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 Reagan-National to Idaho

See prices for flight routes from nearby airports that may be better suited for you.

Top 3 airlines flying from Reagan-National to Idaho

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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 April 25, 2025.