HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Idaho

$101+ 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 2/4. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — BOI
feb. 20 — feb. 271
vie. 2/20
vie. 2/27
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Reagan-National to Idaho with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap 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 enero 21, 2026.

This Frontier deal was found by Cheapflights users on 1/20. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 2/58:00 am
DCA
-
BOI
1 stop29h 12m
Frontier
jue. 2/1212:36 pm
BOI
-
DCA
1 stop22h 39m
Frontier
Deal found 1/20$181
This Mytrip deal was found by Cheapflights users on 1/18. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 2/52:00 pm
DCA
-
BOI
1 stop23h 12m
Frontier
lun. 2/912:07 pm
BOI
-
DCA
1 stop7h 52m
Frontier
Deal found 1/18$189
This Gotogate deal was found by Cheapflights users on 1/20. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 2/42:00 pm
DCA
-
GEG
1 stop24h 08m
Frontier
dom. 2/812:03 pm
GEG
-
DCA
1 stop6h 56m
Frontier
Deal found 1/20$244
This American Airlines deal was found by Cheapflights users on 1/20. 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.
mié. 2/257:30 am
DCA
-
JAC
1 stop8h 56m
American Airlines
mar. 3/101:44 pm
JAC
-
DCA
1 stop7h 16m
American Airlines
Deal found 1/20$249
This American Airlines deal was found by Cheapflights users on 1/20. 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.
mié. 2/256:23 am
DCA
-
JAC
2 stops10h 03m
American Airlines
mié. 3/41:44 pm
JAC
-
DCA
1 stop7h 16m
American Airlines
Deal found 1/20$254
This Delta deal was found by Cheapflights users on 1/20. 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.
sáb. 2/144:44 pm
DCA
-
GEG
1 stop8h 58m
Delta
mar. 2/175:00 am
GEG
-
DCA
1 stop7h 20m
Delta
Deal found 1/20$257
This Delta deal was found by Cheapflights users on 1/20. 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.
mar. 4/73:10 pm
DCA
-
BOI
1 stop7h 59m
Delta
mié. 4/1511:36 pm
BOI
-
DCA
1 stop7h 33m
Delta
Deal found 1/20$257
This Delta deal was found by Cheapflights users on 1/20. 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.
mié. 2/116:00 am
DCA
-
GEG
2 stops10h 03m
Delta
mié. 2/187:30 pm
GEG
-
DCA
2 stops10h 23m
Delta
Deal found 1/20$268
This American Airlines deal was found by Cheapflights users on 1/21. 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.
mié. 2/187:30 am
DCA
-
JAC
1 stop8h 56m
American Airlines
mié. 2/251:44 pm
JAC
-
DCA
1 stop7h 16m
American Airlines
Deal found 1/21$280
This Trip.com deal was found by Cheapflights users on 1/21. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 1/298:00 am
DCA
-
BOI
1 stop29h 12m
Frontier
lun. 2/212:07 pm
BOI
-
DCA
1 stop26h 52m
Frontier
Deal found 1/21$288
This United Airlines deal was found by Cheapflights users on 1/21. 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.
vie. 2/206:30 am
DCA
-
SUN
1 stop7h 23m
United Airlines
mié. 2/2512:34 pm
SUN
-
DCA
1 stop8h 18m
United Airlines
Deal found 1/21$289
This American Airlines deal was found by Cheapflights users on 1/21. 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.
mié. 2/186:45 am
DCA
-
BOI
1 stop8h 15m
American Airlines
mié. 2/251:30 pm
BOI
-
DCA
1 stop8h 20m
American Airlines
Deal found 1/21$289

Find 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 enero 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$181
(Frontier)

One-way from

$101
(Booking.com)

Popular in

December

Cheapest in

April

Average price

$455
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.
Search Deals
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. 15% potential increase in price ($75 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($21 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 enero 21, 2026.
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

jue. 2/5

2:00 pm-11:12 am

1 stop23h 12m

Boise Air Term. Gowen Fld

lun. 2/9

12:07 pm-9:59 pm

1 stop7h 52m

$189

Washington, D.C.Spokane

DCA - GEG

DCAGEG

Washington, D.C. Reagan-National

mié. 2/4

2:00 pm-11:08 am

1 stop24h 08m

Spokane

dom. 2/8

12:03 pm-9:59 pm

1 stop6h 56m

$244

Washington, D.C.Spokane

DCA - GEG

DCAGEG

Washington, D.C. Reagan-National

mié. 2/25

8:00 am-11:27 am

1 stop30h 27m

Spokane

dom. 3/1

12:59 pm-1:00 pm

1 stop21h 01m

$244

Washington, D.C.Spokane

DCA - GEG

DCAGEG

Washington, D.C. Reagan-National

sáb. 2/14

4:44 pm-10:42 pm

1 stop8h 58m

Spokane

mar. 2/17

5:00 am-3:20 pm

1 stop7h 20m

$257

Washington, D.C.Spokane

DCA - GEG

DCAGEG

Washington, D.C. Reagan-National

sáb. 2/14

5:00 pm-11:59 pm

1 stop9h 59m

Spokane

mar. 2/17

7:06 pm-4:06 pm

1 stop18h 00m

$257

Washington, D.C.Spokane

DCA - GEG

DCAGEG

Washington, D.C. Reagan-National

mar. 2/24

3:10 pm-7:57 pm

1 stop7h 47m

Spokane

sáb. 2/28

5:00 am-3:20 pm

1 stop7h 20m

$257

Washington, D.C.Spokane

DCA - GEG

DCAGEG

Washington, D.C. Reagan-National

mié. 2/11

6:00 am-1:03 pm

2 stops10h 03m

Spokane

sáb. 2/14

6:45 am-6:10 pm

1 stop8h 25m

$262

Washington, D.C.Spokane

DCA - GEG

DCAGEG

Washington, D.C. Reagan-National

mar. 4/21

7:59 am-4:30 pm

2 stops11h 31m

Spokane

sáb. 4/25

2:08 pm-11:46 pm

1 stop6h 38m

$262

Washington, D.C.Hailey

DCA - SUN

DCASUN

Washington, D.C. Reagan-National

lun. 3/2

6:00 am-12:54 pm

1 stop8h 54m

Hailey Sun Valley-Friedman

vie. 3/6

1:26 pm-11:50 pm

1 stop8h 24m

$289

Washington, D.C.Hailey

DCA - SUN

DCASUN

Washington, D.C. Reagan-National

vie. 2/20

6:30 am-11:53 am

1 stop7h 23m

Hailey Sun Valley-Friedman

mié. 2/25

12:34 pm-10:52 pm

1 stop8h 18m

$289

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 60 results
1
2
3
...
6

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, September is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Idaho (average of $150). Flying from Washington, D.C. Reagan-National Airport to Idaho in February is currently the most expensive (average of $404). 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.

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 enero 21, 2026.
Read through reviews of airlines operating flights from Washington, D.C. Reagan-National Airport to Idaho, such as Alaska Airlines, Delta, and United Airlines. 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
11,768 reviews

Boarding

8.1

Overall

8.0

Crew

8.5

Entertainment

7.0

Food

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Alaska Airlines
8.0
Very good
11,768 reviews
Alaska Airlines
8.0
Very good
11,768 reviews

Boarding

8.1

Overall

8.0

Crew

8.5

Entertainment

7.0

Food

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Delta
7.9
Good
8,087 reviews
Alaska Airlines
8.0
Very good
11,768 reviews

Boarding

8.1

Overall

8.0

Crew

8.5

Entertainment

7.0

Food

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
United Airlines
7.4
Good
9,188 reviews
Alaska Airlines
8.0
Very good
11,768 reviews

Boarding

8.1

Overall

8.0

Crew

8.5

Entertainment

7.0

Food

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
American Airlines
7.2
Good
11,169 reviews
Alaska Airlines
8.0
Very good
11,768 reviews

Boarding

8.1

Overall

8.0

Crew

8.5

Entertainment

7.0

Food

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading

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.

  • How long is the flight from Washington, D.C. Reagan-National Airport to Idaho?

    Departing from Washington, D.C. Reagan-National Airport to Idaho will take you 8h 58m. There are 2099 mi between Washington, D.C. Reagan-National Airport and Idaho. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    $146 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 $148 and $150, 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 - Boise Air Term. Gowen Fld or Washington, D.C. Reagan-National - Hailey Sun Valley-Friedman 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, September is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Idaho (average of $150). Flying from Washington, D.C. Reagan-National Airport to Idaho in February is currently the most expensive (average of $404). 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

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.
Reagan-National to Miami flights
Dulles Intl to Miami flights
Dulles Intl to Las Vegas flights
Dulles Intl to Orlando flights
Baltimore to Fort Lauderdale flights
Dulles Intl to Tampa flights
Dulles Intl to Fort Lauderdale flights
Baltimore to Orlando flights
Reagan-National to Orlando flights
Baltimore to Dallas/Fort Worth flights
Baltimore to Las Vegas flights
Dulles Intl to Dallas/Fort Worth flights
Baltimore to Miami flights
Reagan-National to Los Angeles flights
Baltimore to Tampa flights
Reagan-National to Tampa flights
Reagan-National to Las Vegas flights
Baltimore to Los Angeles flights
Reagan-National to Dallas/Fort Worth flights
Reagan-National to Fort Lauderdale flights
Dulles Intl to Sky Harbor Intl flights
Baltimore to Denver flights
Reagan-National to Hobby flights
Baltimore to Atlanta flights
Dulles Intl to Hobby flights
Dulles Intl to Denver flights
Reagan-National to Seattle flights
Reagan-National to Atlanta flights
Dulles Intl to Los Angeles flights
Dulles Intl to Seattle flights
Baltimore to Hobby flights
Dulles Intl to Atlanta flights
Dulles Intl to Salt Lake City flights
Baltimore to O'Hare Intl flights
Dulles Intl to O'Hare Intl flights
Reagan-National to O'Hare Intl flights
Reagan-National to San Francisco flights
Reagan-National to Denver flights
Baltimore to New Orleans flights
Baltimore to Boston flights
Dulles Intl to San Francisco flights
Baltimore to Sky Harbor Intl flights
Dulles Intl to New Orleans flights
Dulles Intl to George Bush Intcntl flights
Baltimore to Seattle flights
Baltimore to San Francisco flights
Reagan-National to New Orleans flights
Dulles Intl to Austin flights
Dulles Intl to Fort Myers flights
Reagan-National to George Bush Intcntl flights

Top 4 airlines flying from Reagan-National to Idaho

Discover the top 4 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 enero 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$150Average$369FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$221Average$560FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$300Average$504FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$388Average$458FlexibilityNo cancel feeOn-time75%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.