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 ($89), Hawaiian Airlines ($148), and Delta ($149).

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.

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

The most popular airlines flying from Idaho to Washington, D.C. Reagan-National Airport are American Airlines, Alaska Airlines and Delta. Something to consider prior to booking your flight.

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

To save on the cost of your flight from Idaho to Washington, D.C. Reagan-National Airport, book at least 38 days before your planned departure. Booking around this time can save you about 169% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $506 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $1,051.

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

Due to multiple factors, expect to potentially pay more when booking in March. For low rates, February can be a great choice for travel to Washington, D.C. Reagan-National Airport. Flights to Washington, D.C. Reagan-National Airport from Idaho in February are about $468 on average during February, but can be found for as low as $300.

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.

$89+ Flights from Idaho to Washington, D.C. Reagan-National Airport - Compare & Save Big

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Cheap flight deals from Idaho to Reagan-National

Most accurate provider	FlightHub 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$296 (Alaska Airlines)
One-way from	$89 (Frontier)
Popular in	March
Cheapest in	February
Average price	$374

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.

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From Idaho to Washington, D.C. Reagan-National

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

Search Deals

High demand for flights, 6% potential price rise

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($11 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 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 abril 25, 2025.

qua 5/219:30 amGEG - DCA

1 stop9h 29mAlaska Airlines

dom 5/258:59 amDCA - GEG

1 stop16h 23mAlaska Airlines

Deal found 4/24

$296

qua 5/282:10 pmGEG - DCA

1 stop6h 16mDelta

seg 6/96:10 amDCA - GEG

1 stop7h 26mDelta

Deal found 4/23

$297

sex 6/611:59 pmBOI - DCA

1 stop8h 57mDelta

ter 6/104:40 pmDCA - BOI

1 stop9h 10mDelta

Deal found 4/23

$301

qua 11/129:50 amBOI - DCA

1 stop10h 05mAlaska Airlines

qua 11/198:00 amDCA - BOI

1 stop10h 20mAlaska Airlines

Deal found 4/24

$323

sex 6/131:15 pmBOI - DCA

1 stop8h 31mAmerican Airlines

qua 6/185:08 amDCA - BOI

1 stop7h 48mAmerican Airlines

Deal found 4/24

$330

sáb 5/315:34 amGEG - DCA

1 stop10h 17mAmerican Airlines

qua 6/115:30 pmDCA - GEG

1 stop8h 34mAmerican Airlines

Deal found 4/23

$357

qua 5/2810:45 amBOI - DCA

1 stop8h 27mUnited Airlines

sáb 5/317:00 amDCA - BOI

1 stop8h 49mUnited Airlines

Deal found 4/25

$358

qua 6/117:37 amJAC - DCA

1 stop8h 25mUnited Airlines

ter 6/241:00 pmDCA - JAC

1 stop8h 02mUnited Airlines

Deal found 4/23

$368

qua 11/1211:45 amBOI - DCA

2 stops8h 30mSouthwest

qua 11/194:35 pmDCA - BOI

1 stop7h 50mSouthwest

Deal found 4/24

$376

ter 6/106:53 pmJAC - DCA

2 stops12h 16mDelta

ter 6/249:58 amDCA - JAC

2 stops13h 00mDelta

Deal found 4/23

$378

qui 7/109:45 amGEG - DCA

1 stop9h 14mHawaiian Airlines

ter 7/159:59 amDCA - GEG

1 stop10h 48mHawaiian Airlines

Deal found 4/24

$407

qui 5/2212:36 pmBOI - DCA

1 stop7h 23mMultiple Airlines

sáb 5/248:00 amDCA - BOI

1 stop8h 05mMultiple Airlines

Deal found 4/24

$408

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

qua 5/219:30 amGEG - DCA

1 stop9h 29mAlaska Airlines

dom 5/258:59 amDCA - GEG

1 stop16h 23mAlaska Airlines

Deal found 4/24

$296

qua 5/282:10 pmGEG - DCA

1 stop6h 16mDelta

seg 6/96:10 amDCA - GEG

1 stop7h 26mDelta

Deal found 4/23

$297

sex 6/131:15 pmBOI - DCA

1 stop8h 31mAmerican Airlines

qua 6/185:08 amDCA - BOI

1 stop7h 48mAmerican Airlines

Deal found 4/24

$330

qua 5/2810:45 amBOI - DCA

1 stop8h 27mUnited Airlines

sáb 5/317:00 amDCA - BOI

1 stop8h 49mUnited Airlines

Deal found 4/25

$358

qui 7/109:45 amGEG - DCA

1 stop9h 14mHawaiian Airlines

ter 7/159:59 amDCA - GEG

1 stop10h 48mHawaiian Airlines

Deal found 4/24

$407

qui 5/2212:36 pmBOI - DCA

1 stop7h 23mMultiple Airlines

sáb 5/248:00 amDCA - BOI

1 stop8h 05mMultiple Airlines

Deal found 4/24

$408

qui 5/299:50 amGEG - DCA

2 stops9h 20mSouthwest

ter 6/103:15 pmDCA - GEG

2 stops10h 50mSouthwest

Deal found 4/23

$434

sex 6/611:59 pmBOI - DCA

1 stop8h 57mDelta

ter 6/104:40 pmDCA - BOI

1 stop9h 10mDelta

Deal found 4/23

$301

sáb 5/315:34 amGEG - DCA

1 stop10h 17mAmerican Airlines

qua 6/115:30 pmDCA - GEG

1 stop8h 34mAmerican Airlines

Deal found 4/23

$357

qua 6/117:37 amJAC - DCA

1 stop8h 25mUnited Airlines

ter 6/241:00 pmDCA - JAC

1 stop8h 02mUnited Airlines

Deal found 4/23

$368

ter 6/106:53 pmJAC - DCA

2 stops12h 16mDelta

ter 6/249:58 amDCA - JAC

2 stops13h 00mDelta

Deal found 4/23

$378

ter 5/139:18 amBOI - DCA

1 stop10h 41mAlaska Airlines

sex 5/166:38 pmDCA - BOI

1 stop24h 33mAlaska Airlines

Deal found 4/24

$416

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

qua 4/306:00 amGEG - DCA

1 stop7h 38mAlaska Airlines

sáb 5/35:38 pmDCA - GEG

1 stop8h 26mAlaska Airlines

Deal found 4/24

$696

qua 4/305:34 amGEG - DCA

2 stops9h 25mAmerican Airlines

sáb 5/37:00 amDCA - GEG

1 stop9h 38mAmerican Airlines

Deal found 4/24

$702

qua 4/307:20 amGEG - DCA

2 stops10h 35mSouthwest

dom 5/44:45 pmDCA - GEG

2 stops10h 25mSouthwest

Deal found 4/24

$831

qua 4/304:08 pmGEG - DCA

2 stops14h 50mUnited Airlines

dom 5/46:25 amDCA - GEG

3 stops17h 25mUnited Airlines

Deal found 4/23

$1,074

qui 5/17:05 amJAC - DCA

1 stop6h 55mDelta

qui 5/89:59 amDCA - JAC

2 stops12h 49mDelta

Deal found 4/23

$660

qui 5/15:00 amGEG - DCA

1 stop8h 38mHawaiian Airlines

dom 5/45:38 pmDCA - GEG

1 stop9h 21mHawaiian Airlines

Deal found 4/24

$872

qui 5/110:40 amBOI - DCA

2 stops8h 10mSouthwest

dom 5/412:00 pmDCA - BOI

2 stops13h 45mSouthwest

Deal found 4/24

$895

qui 5/16:00 amIDA - DCA

1 stop8h 38mHawaiian Airlines

qui 5/88:00 amDCA - IDA

1 stop9h 58mHawaiian Airlines

Deal found 4/24

$1,059

dom 5/48:05 amBOI - DCA

1 stop10h 53mAlaska Airlines

qua 5/78:59 amDCA - BOI

1 stop15h 56mAlaska Airlines

Deal found 4/24

$754

seg 5/55:10 pmBOI - DCA

1 stop11h 50mAmerican Airlines

sex 5/91:44 pmDCA - BOI

1 stop10h 16mAmerican Airlines

Deal found 4/23

$776

seg 5/511:25 amBOI - DCA

2 stops10h 33mDelta

sex 5/95:10 pmDCA - BOI

2 stops9h 12mDelta

Deal found 4/23

$800

seg 5/511:10 amBOI - DCA

1 stop8h 49mHawaiian Airlines

sex 5/95:38 pmDCA - BOI

1 stop8h 12mHawaiian Airlines

Deal found 4/25

$874

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

ter 5/2012:26 pmGEG - DCA

1 stop6h 33mFrontier

Deal found 4/24

$89

sáb 5/2410:45 amGEG - DCA

1 stop8h 14mHawaiian Airlines

Deal found 4/24

$148

sex 7/46:50 amGEG - DCA

1 stop8h 08mDelta

Deal found 4/24

$149

sex 6/61:15 pmBOI - DCA

1 stop8h 31mAmerican Airlines

Deal found 4/23

$151

sex 6/611:59 pmBOI - DCA

2 stops9h 36mDelta

Deal found 4/23

$156

seg 5/59:34 pmIDA - DCA

2 stops17h 25mMultiple Airlines

Deal found 4/25

$169

qua 6/117:00 amJAC - DCA

1 stop7h 20mAmerican Airlines

Deal found 4/25

$171

qui 9/1111:45 amJAC - DCA

1 stop8h 14mAlaska Airlines

Deal found 4/24

$190

sex 6/67:37 amJAC - DCA

1 stop7h 24mUnited Airlines

Deal found 4/25

$198

qui 6/1212:36 pmBOI - DCA

1 stop7h 23mFrontier

Deal found 4/24

$198

qua 9/1712:30 pmIDA - DCA

1 stop7h 30mAmerican Airlines

Deal found 4/24

$198

ter 6/246:53 pmJAC - DCA

2 stops11h 40mDelta

Deal found 4/24

$203

Cheapflights Fare Finder

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

Fly to

Route

Depart

Return

Price

SpokaneWashington, D.C.

GEG - DCA

GEGDCA

Spokane

qua 5/21

9:30 am-9:59 pm

1 stop9h 29m

Washington, D.C. Reagan-National

dom 5/25

8:59 am-10:22 pm

1 stop16h 23m

$296

SpokaneWashington, D.C.

GEG - DCA

GEGDCA

Spokane

qua 5/28

2:10 pm-11:26 pm

1 stop6h 16m

Washington, D.C. Reagan-National

seg 6/9

6:10 am-10:36 am

1 stop7h 26m

$297

BoiseWashington, D.C.

BOI - DCA

BOIDCA

Boise Air Term. Gowen Fld

sex 6/6

11:59 pm-10:56 am

1 stop8h 57m

Washington, D.C. Reagan-National

ter 6/10

4:40 pm-11:50 pm

1 stop9h 10m

$301

BoiseWashington, D.C.

BOI - DCA

BOIDCA

Boise Air Term. Gowen Fld

sex 6/13

1:15 pm-11:46 pm

1 stop8h 31m

Washington, D.C. Reagan-National

qua 6/18

5:08 am-10:56 am

1 stop7h 48m

$330

SpokaneWashington, D.C.

GEG - DCA

GEGDCA

Spokane

sáb 5/31

5:34 am-6:51 pm

1 stop10h 17m

Washington, D.C. Reagan-National

qua 6/11

5:30 pm-11:04 pm

1 stop8h 34m

$357

BoiseWashington, D.C.

BOI - DCA

BOIDCA

Boise Air Term. Gowen Fld

qua 5/28

10:45 am-9:12 pm

1 stop8h 27m

Washington, D.C. Reagan-National

sáb 5/31

7:00 am-1:49 pm

1 stop8h 49m

$358

JacksonWashington, D.C.

JAC - DCA

JACDCA

Jackson Hole

qua 6/11

7:37 am-6:02 pm

1 stop8h 25m

Washington, D.C. Reagan-National

ter 6/24

1:00 pm-7:02 pm

1 stop8h 02m

$368

JacksonWashington, D.C.

JAC - DCA

JACDCA

Jackson Hole

ter 6/10

6:53 pm-9:09 am

2 stops12h 16m

Washington, D.C. Reagan-National

ter 6/24

9:58 am-8:58 pm

2 stops13h 00m

$378

SpokaneWashington, D.C.

GEG - DCA

GEGDCA

Spokane

qui 7/10

9:45 am-9:59 pm

1 stop9h 14m

Washington, D.C. Reagan-National

ter 7/15

9:59 am-5:47 pm

1 stop10h 48m

$407

BoiseWashington, D.C.

BOI - DCA

BOIDCA

Boise Air Term. Gowen Fld

qui 5/22

12:36 pm-9:59 pm

1 stop7h 23m

Washington, D.C. Reagan-National

sáb 5/24

8:00 am-2:05 pm

1 stop8h 05m

$408

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/24

Showing 1-10 of 50 results

...

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, February is the cheapest month in which you can book a flight from Idaho to Washington, D.C. Reagan-National Airport (average of $278). Flying from Idaho to Washington, D.C. Reagan-National Airport in June is currently the most expensive (average of $345). 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 ID to DCA?

When flying from Idaho to Washington, D.C. Reagan-National Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Reagan-National by month

In terms of precipitation, rainfall in Washington, D.C. Reagan-National Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Reagan-National Airport when rainfall is around 2.6 in.

Temperature in Reagan-National by month

If weather is an important factor for your trip to Washington, D.C. Reagan-National Airport, 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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

Reviews of airlines servicing Reagan-National

To help decide which airline to fly from Idaho to Washington, D.C., see what other customers have to say about Alaska Airlines, Southwest and Delta. Users have also rated airlines 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 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 ($89), Hawaiian Airlines ($148), and Delta ($149).
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, February is the cheapest month in which you can book a flight from Idaho to Washington, D.C. Reagan-National Airport (average of $278). Flying from Idaho to Washington, D.C. Reagan-National Airport in June is currently the most expensive (average of $345). 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

Arlington

Alexandria

Woodbridge

Fairfax

Tysons

Springfield

Rockville

Fredericksburg

Gaithersburg

Silver Spring

Linthicum Heights

Falls Church

Laurel

Easton

Herndon

Bowie

Towson

National Harbor

Oxon Hill

Reston

Browse thousands of different options on Cheapflights for your next trip

Top 5 airlines flying from Idaho to Reagan-National

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$309	Average$484	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$359	Average$627	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$380	Average$763	FlexibilityNo cancel fee	On-time69%
Alaska Airlines	Cheapest$392	Average$601	FlexibilityNo cancel fee	On-time75%
Southwest	Cheapest$403	Average$543	FlexibilityNo cancel fee	On-time63%

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$89+ 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 5/20. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Idaho to Reagan-National with Cheapflights

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Cheap 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 abril 25, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Idaho to Reagan-National

Cheapest flights from Idaho to Reagan-NationalExplore 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 abril 25, 2025.

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 abril 25, 2025.

Cheapflights Fare Finder

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

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.

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?

What is the cheapest time of day to fly from ID to DCA?

Find hourly flight availability from Idaho to Reagan-National. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated abril 25, 2025.

Rainfall in Reagan-National by month

Plan your trip to Reagan-National by taking into account the average rainfall totals by month.

Temperature in Reagan-National by month

Plan your trip to Reagan-National by taking into account the average temperature totals by month.

Reviews of airlines servicing Reagan-National

To help decide which airline to fly from Idaho to Washington, D.C., see what other customers have to say about Alaska Airlines, Southwest and Delta. Users have also rated airlines 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 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.

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

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

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

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

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

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

Traveling to a place near Idaho?

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Alternative routes for Idaho to Reagan-National

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Top 5 airlines flying from Idaho to Reagan-National

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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 abril 25, 2025.