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

$108 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Hawaiian Airlines and Delta, with prices starting from $148 and $149, 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 $245 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 $455 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.

$108+ 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	$218 (Booking.com)
One-way from	$108 (Cheapflightsfares)
Popular in	December
Cheapest in	April
Average price	$304

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

Search Deals

Highest demand for flights based on searches. 15% potential increase in price ($82 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 29, 2025.

Wed 5/141:00 pmDCA - BOI

1 stop26h 37mFrontier

Sun 5/182:27 pmBOI - DCA

1 stop29h 32mFrontier

Deal found 4/29

$218

Tue 7/85:59 pmDCA - GEG

1 stop8h 39mDelta

Fri 7/2511:41 amGEG - DCA

1 stop8h 53mDelta

Deal found 4/29

$297

Wed 6/47:00 amDCA - BOI

1 stop8h 50mUnited Airlines

Sat 6/710:45 amBOI - DCA

1 stop8h 42mUnited Airlines

Deal found 4/29

$301

Wed 6/46:00 amDCA - BOI

2 stops7h 54mDelta

Sat 6/71:18 pmBOI - DCA

1 stop8h 25mDelta

Deal found 4/29

$306

Thu 6/57:00 amDCA - GEG

1 stop7h 03mFrontier

Thu 6/1211:58 amGEG - DCA

1 stop7h 01mFrontier

Deal found 4/29

$311

Tue 6/35:00 pmDCA - GEG

1 stop8h 25mAlaska Airlines

Wed 6/1110:45 amGEG - DCA

1 stop8h 14mAlaska Airlines

Deal found 4/29

$319

Wed 7/236:25 amDCA - GEG

1 stop7h 31mUnited Airlines

Fri 7/257:25 amGEG - DCA

1 stop11h 02mUnited Airlines

Deal found 4/29

$333

Mon 5/55:38 pmDCA - GEG

1 stop8h 26mHawaiian Airlines

Thu 5/87:00 amGEG - DCA

1 stop10h 58mHawaiian Airlines

Deal found 4/28

$346

Mon 5/122:59 pmDCA - GEG

1 stop8h 54mAmerican Airlines

Thu 6/121:51 pmGEG - DCA

1 stop6h 55mAmerican Airlines

Deal found 4/28

$349

Thu 5/298:00 amDCA - BOI

1 stop9h 55mHawaiian Airlines

Wed 6/118:55 amBOI - DCA

1 stop10h 10mHawaiian Airlines

Deal found 4/28

$350

Thu 12/46:30 amDCA - BOI

1 stop8h 02mAmerican Airlines

Sat 1/107:32 amBOI - DCA

1 stop9h 27mAmerican Airlines

Deal found 4/29

$371

Sat 6/286:00 amDCA - BOI

1 stop8h 00mSouthwest

Fri 7/46:15 amBOI - DCA

1 stop8h 25mSouthwest

Deal found 4/28

$380

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 29, 2025.

Wed 5/141:00 pmDCA - BOI

1 stop26h 37mFrontier

Sun 5/182:27 pmBOI - DCA

1 stop29h 32mFrontier

Deal found 4/29

$218

Tue 7/83:59 pmDCA - GEG

1 stop9h 01mDelta

Tue 7/2211:10 pmGEG - DCA

1 stop6h 59mDelta

Deal found 4/28

$297

Tue 6/35:00 pmDCA - GEG

1 stop8h 25mAlaska Airlines

Wed 6/1110:45 amGEG - DCA

1 stop8h 14mAlaska Airlines

Deal found 4/29

$319

Wed 7/236:25 amDCA - GEG

1 stop7h 31mUnited Airlines

Fri 7/257:25 amGEG - DCA

1 stop11h 02mUnited Airlines

Deal found 4/29

$333

Wed 6/185:08 amDCA - BOI

1 stop7h 48mAmerican Airlines

Sat 6/213:35 pmBOI - DCA

1 stop7h 16mAmerican Airlines

Deal found 4/29

$336

Thu 5/298:00 amDCA - BOI

1 stop9h 55mHawaiian Airlines

Wed 6/118:55 amBOI - DCA

1 stop10h 10mHawaiian Airlines

Deal found 4/28

$350

Sat 6/286:00 amDCA - BOI

1 stop8h 00mSouthwest

Fri 7/46:15 amBOI - DCA

1 stop8h 25mSouthwest

Deal found 4/27

$380

Thu 5/227:00 amDCA - GEG

1 stop7h 04mMultiple Airlines

Fri 5/2311:33 amGEG - DCA

1 stop7h 26mMultiple Airlines

Deal found 4/29

$423

Thu 7/177:50 amDCA - BOI

1 stop8h 22mDelta

Tue 7/2211:40 pmBOI - DCA

1 stop9h 20mDelta

Deal found 4/28

$301

Thu 6/57:00 amDCA - GEG

1 stop7h 03mFrontier

Thu 6/1211:58 amGEG - DCA

1 stop7h 01mFrontier

Deal found 4/29

$311

Sat 7/195:30 pmDCA - GEG

1 stop8h 27mAmerican Airlines

Fri 7/251:39 pmGEG - DCA

1 stop7h 18mAmerican Airlines

Deal found 4/29

$347

Mon 5/266:25 amDCA - BOI

1 stop7h 18mUnited Airlines

Sat 5/3110:45 amBOI - DCA

1 stop8h 42mUnited Airlines

Deal found 4/28

$348

Last-minute flights from Reagan-National to Idaho
Discover last-minute flight deals from Reagan-National to Idaho. Data last updated April 29, 2025 and is based on user searches.

Mon 5/53:30 pmDCA - BOI

1 stop9h 15mUnited Airlines

Wed 5/1411:02 amBOI - DCA

1 stop8h 32mUnited Airlines

Deal found 4/28

$301

Mon 5/55:38 pmDCA - GEG

1 stop8h 26mAlaska Airlines

Tue 5/137:00 amGEG - DCA

1 stop10h 58mAlaska Airlines

Deal found 4/28

$343

Mon 5/55:38 pmDCA - GEG

1 stop8h 26mHawaiian Airlines

Thu 5/87:00 amGEG - DCA

1 stop10h 58mHawaiian Airlines

Deal found 4/28

$346

Mon 5/57:00 amDCA - GEG

1 stop10h 41mUnited Airlines

Wed 5/145:29 amGEG - DCA

1 stop6h 33mUnited Airlines

Deal found 4/28

$397

Mon 5/54:35 pmDCA - BOI

2 stops10h 15mSouthwest

Wed 5/1411:45 amBOI - DCA

2 stops9h 25mSouthwest

Deal found 4/28

$650

Mon 5/56:05 amDCA - GEG

2 stops10h 40mSouthwest

Wed 5/147:20 amGEG - DCA

2 stops10h 35mSouthwest

Deal found 4/28

$695

Mon 5/55:10 pmDCA - SUN

1 stop7h 15mDelta

Tue 5/137:30 amSUN - DCA

2 stops9h 29mDelta

Deal found 4/28

$712

Tue 5/68:00 amDCA - BOI

1 stop10h 55mAlaska Airlines

Wed 5/149:18 amBOI - DCA

1 stop10h 41mAlaska Airlines

Deal found 4/28

$345

Tue 5/610:20 amDCA - BOI

1 stop8h 20mAmerican Airlines

Mon 5/121:38 pmBOI - DCA

1 stop7h 26mAmerican Airlines

Deal found 4/28

$401

Tue 5/64:50 pmDCA - GEG

1 stop9h 10mDelta

Thu 5/152:10 pmGEG - DCA

1 stop6h 16mDelta

Deal found 4/28

$726

Wed 5/712:10 pmDCA - JAC

2 stops10h 38mDelta

Mon 5/126:50 pmJAC - DCA

2 stops12h 18mDelta

Deal found 4/29

$721

Fri 5/910:00 pmDCA - JAC

2 stops16h 06mAmerican Airlines

Tue 5/133:02 pmJAC - DCA

2 stops14h 36mAmerican Airlines

Deal found 4/29

$618

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 29, 2025.

Thu 5/297:00 amDCA - BOI

1 stop6h 51mFrontier

Deal found 4/29

$108

Sat 5/246:00 pmDCA - GEG

1 stop20h 04mFrontier

Deal found 4/29

$126

Sat 8/165:02 pmDCA - GEG

1 stop8h 54mHawaiian Airlines

Deal found 4/29

$148

Sat 7/267:50 amDCA - GEG

1 stop8h 27mDelta

Deal found 4/29

$149

Tue 5/68:00 amDCA - BOI

1 stop7h 47mAlaska Airlines

Deal found 4/29

$150

Mon 9/155:06 pmDCA - JAC

1 stop20h 53mAlaska Airlines

Deal found 4/28

$151

Sun 9/146:25 amDCA - BOI

1 stop7h 06mUnited Airlines

Deal found 4/29

$151

Thu 5/294:00 pmDCA - BOI

2 stops10h 23mDelta

Deal found 4/29

$156

Wed 5/286:45 amDCA - JAC

1 stop9h 36mAmerican Airlines

Deal found 4/28

$171

Sun 5/47:00 amDCA - GEG

1 stop10h 41mUnited Airlines

Deal found 4/27

$178

Wed 7/234:55 pmDCA - GEG

1 stop10h 10mSouthwest

Deal found 4/27

$196

Sun 5/116:45 amDCA - GEG

1 stop8h 40mAmerican Airlines

Deal found 4/28

$201

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

Wed 5/14

1:00 pm-1:37 pm

1 stop26h 37m

Boise Air Term. Gowen Fld

Sun 5/18

2:27 pm-9:59 pm

1 stop29h 32m

$218

Washington, D.C.Spokane

DCA - GEG

DCAGEG

Washington, D.C. Reagan-National

Tue 7/8

5:59 pm-11:38 pm

1 stop8h 39m

Spokane

Wed 7/23

11:41 am-11:34 pm

1 stop8h 53m

$297

Washington, D.C.Boise

DCA - BOI

DCABOI

Washington, D.C. Reagan-National

Wed 6/4

7:00 am-1:50 pm

1 stop8h 50m

Boise Air Term. Gowen Fld

Sat 6/7

10:45 am-9:27 pm

1 stop8h 42m

$301

Washington, D.C.Boise

DCA - BOI

DCABOI

Washington, D.C. Reagan-National

Wed 6/4

6:00 am-11:54 am

2 stops7h 54m

Boise Air Term. Gowen Fld

Sat 6/7

1:18 pm-11:43 pm

1 stop8h 25m

$306

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

$311

Washington, D.C.Spokane

DCA - GEG

DCAGEG

Washington, D.C. Reagan-National

Tue 6/3

5:00 pm-10:25 pm

1 stop8h 25m

Spokane

Wed 6/11

10:45 am-9:59 pm

1 stop8h 14m

$319

Washington, D.C.Spokane

DCA - GEG

DCAGEG

Washington, D.C. Reagan-National

Wed 7/23

6:25 am-10:56 am

1 stop7h 31m

Spokane

Fri 7/25

7:25 am-9:27 pm

1 stop11h 02m

$333

Washington, D.C.Spokane

DCA - GEG

DCAGEG

Washington, D.C. Reagan-National

Mon 5/12

2:59 pm-8:53 pm

1 stop8h 54m

Spokane

Thu 6/12

1:51 pm-11:46 pm

1 stop6h 55m

$349

Washington, D.C.Boise

DCA - BOI

DCABOI

Washington, D.C. Reagan-National

Thu 5/29

8:00 am-3:55 pm

1 stop9h 55m

Boise Air Term. Gowen Fld

Wed 6/11

8:55 am-9:05 pm

1 stop10h 10m

$350

Washington, D.C.Boise

DCA - BOI

DCABOI

Washington, D.C. Reagan-National

Sat 6/28

6:00 am-12:00 pm

1 stop8h 00m

Boise Air Term. Gowen Fld

Fri 7/4

6:15 am-4:40 pm

1 stop8h 25m

$380

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

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 $406). 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

9,961 reviews

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

9,961 reviews

Alaska Airlines

8.0

Very good

9,961 reviews

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

4,295 reviews

Alaska Airlines

8.0

Very good

9,961 reviews

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

7,929 reviews

Alaska Airlines

8.0

Very good

9,961 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Hawaiian Airlines

7.9

Good

2,405 reviews

Alaska Airlines

8.0

Very good

9,961 reviews

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

8,696 reviews

Alaska Airlines

8.0

Very good

9,961 reviews

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

What are the cheapest airlines to fly from Washington, D.C. Reagan-National Airport to Idaho one-way?
$108 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Hawaiian Airlines and Delta, with prices starting from $148 and $149, 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 $406). 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$300	Average$423	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$388	Average$613	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$415	Average$698	FlexibilityNo cancel fee	On-time69%

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$108+ 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 29, 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 29, 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 29, 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 29, 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 29, 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 29, 2025.