What airlines fly to Washington, D.C. Reagan-National Airport?

Delta, American Airlines and United Airlines are the top three most popular airlines that fly to Washington, D.C. Reagan-National Airport from Idaho according to our data. Delta is the first choice among our users, with 43% of people opting to fly with this airline when traveling to Washington, D.C. Reagan-National Airport. Keep in mind that there are 5 different airlines that fly to Washington, D.C. Reagan-National Airport on a routine basis, so you have a few additional options to choose from.

How long does it take to fly to Washington, D.C. Reagan-National Airport?

Flight times from Idaho to Washington, D.C. Reagan-National Airport vary, but if you’re flying out of Boise and flying into Washington, D.C. Dulles Intl Airport (one of the most popular routes), then the duration is 5h 51m on average. Another popular route from Idaho to Washington, D.C. Reagan-National Airport is flying from Idaho Falls to Washington, D.C. Dulles Intl Airport, which will take roughly 6h 28m. Keep in mind that layovers or delays could extend your travel time.

What is the cheapest airline that flies from Idaho to Washington, D.C. Reagan-National?

American Airlines, Delta, and Southwest are the most popular carriers operating from Idaho to Washington, D.C. Reagan-National

How many operators does momondo search for flights from Idaho to Washington, D.C. Reagan-National Airport?

There are 5 operators available for flights from Idaho to Washington, D.C. Reagan-National Airport as of July 2026.

How old do you have to be to fly from Idaho to Washington, D.C. Reagan-National Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Idaho to Washington, D.C. Reagan-National Airport.

What documentation or ID do you need to fly to Washington, D.C. Reagan-National Airport?

The travel and health documents you'll need for your trip to Washington, D.C. Reagan-National Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Washington, D.C. Reagan-National Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$98 Cheap Flights from Idaho to Washington, D.C. Reagan-National Airport in 2026

Q: How many flights depart from Idaho to Washington, D.C. Reagan-National Airport on average per week?

3 flights are operational weekly from Idaho to Washington, D.C. Reagan-National Airport as of July 2026. The most popular departure day for this route is Mon, with 33% of flights per week taking off on this day.

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Idaho to Washington, D.C.

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

3:21 pm - 11:59 pm

BOI

DCA

6h 38m

1 stop

8:40 am - 2:31 pm

DCA

BOI

7h 51m

1 stop

$195American Airlines

Sat, Sep 19 - Tue, Sep 22

2:11 pm - 11:43 pm

BOI

DCA

7h 32m

1 stop

6:59 pm - 11:59 pm

DCA

BOI

7h 00m

1 stop

$197Delta

Sat, Sep 19 - Tue, Sep 22

12:10 pm - 11:55 pm

BOI

DCA

9h 45m

1 stop

7:25 am - 2:10 pm

DCA

BOI

8h 45m

1 stop

$202Southwest

Thu, Aug 13 - Thu, Aug 20

5:20 am - 3:34 pm

GEG

DCA

7h 14m

1 stop

6:10 am - 11:44 am

DCA

GEG

8h 34m

1 stop

$203Delta

Tue, Dec 1 - Tue, Dec 8

12:10 pm - 11:55 pm

BOI

DCA

9h 45m

1 stop

4:55 pm - 11:55 pm

DCA

BOI

9h 00m

2 stops

$207Southwest

Thu, Aug 20 - Thu, Aug 27

1:24 pm - 12:51 pm

BOI

DCA

21h 27m

1 stop

7:00 am - 12:29 pm

DCA

BOI

7h 29m

1 stop

$242Frontier

Tue, Aug 11 - Tue, Aug 25

6:09 am - 4:25 pm

IDA

DCA

8h 16m

1 stop

5:00 pm - 11:42 pm

DCA

IDA

8h 42m

1 stop

$474Alaska Airlines

Sat, Oct 31 - Tue, Nov 3

8:15 am - 6:12 pm

SUN

DCA

7h 57m

1 stop

11:57 am - 6:58 pm

DCA

SUN

9h 01m

1 stop

$489United Airlines

Thu, Jul 23 - Mon, Jul 27

11:53 am - 9:59 pm

SUN

DCA

8h 06m

1 stop

8:00 am - 10:51 am

DCA

SUN

28h 51m

1 stop

$501Alaska Airlines

Sat, Oct 31 - Tue, Nov 3

8:15 am - 6:11 pm

SUN

DCA

7h 56m

1 stop

11:57 am - 6:58 pm

DCA

SUN

9h 01m

1 stop

$589United Airlines

Tue, Jul 28 - Wed, Aug 5

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Southwest flights from Idaho to Washington, D.C. Reagan-National Airport

Our best Southwest deals on Idaho to Washington, D.C. Reagan-National Airport flight tickets

Southwest

Aug 13

BOI12:10 pmBoise Air Term. Gowen Fld

9h 45m

1 stop

DCA11:55 pmWashington, D.C. Reagan-National

Aug 20

DCA7:25 amWashington, D.C. Reagan-National

8h 45m

1 stop

BOI2:10 pmBoise Air Term. Gowen Fld

$202

Southwest

Aug 20

BOI12:10 pmBoise Air Term. Gowen Fld

9h 45m

1 stop

DCA11:55 pmWashington, D.C. Reagan-National

Aug 27

DCA4:55 pmWashington, D.C. Reagan-National

9h 00m

2 stops

BOI11:55 pmBoise Air Term. Gowen Fld

$207

Southwest

Aug 25

GEG6:15 amSpokane

7h 45m

1 stop

DCA5:00 pmWashington, D.C. Reagan-National

Sep 1

DCA1:00 pmWashington, D.C. Reagan-National

12h 05m

2 stops

GEG10:05 pmSpokane

$208

Alaska Airlines flights from Idaho to Washington, D.C. Reagan-National Airport

Our best Alaska Airlines deals on Idaho to Washington, D.C. Reagan-National Airport flight tickets

Alaska Airlines

Aug 25

BOI6:00 amBoise Air Term. Gowen Fld

8h 00m

1 stop

DCA4:00 pmWashington, D.C. Reagan-National

Aug 29

DCA10:59 amWashington, D.C. Reagan-National

11h 21m

1 stop

BOI8:20 pmBoise Air Term. Gowen Fld

$350

Alaska Airlines

Oct 31

IDA6:09 amIdaho Falls Fanning Field

8h 16m

1 stop

DCA4:25 pmWashington, D.C. Reagan-National

Nov 3

DCA5:00 pmWashington, D.C. Reagan-National

8h 42m

1 stop

IDA11:42 pmIdaho Falls Fanning Field

$474

Alaska Airlines

Oct 31

SUN11:53 amHailey Sun Valley-Friedman

8h 06m

1 stop

DCA9:59 pmWashington, D.C. Reagan-National

Nov 3

DCA8:00 amWashington, D.C. Reagan-National

28h 51m

1 stop

SUN10:51 amHailey Sun Valley-Friedman

$501

momondo 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

Cheapest round-trip

Quickest round-trip

BoiseWashington, D.C.

BOI - DCA

BOIDCA

Boise Air Term. Gowen Fld

Sat 9/19

3:21 pm-11:59 pm

1 stop6h 38m

Washington, D.C. Reagan-National

Tue 9/22

8:40 am-2:31 pm

1 stop7h 51m

$195

BoiseWashington, D.C.

BOI - DCA

BOIDCA

Boise Air Term. Gowen Fld

Sat 9/19

2:11 pm-11:43 pm

1 stop7h 32m

Washington, D.C. Reagan-National

Tue 9/22

6:59 pm-11:59 pm

1 stop7h 00m

$197

BoiseWashington, D.C.

BOI - DCA

BOIDCA

Boise Air Term. Gowen Fld

Thu 8/13

12:10 pm-11:55 pm

1 stop9h 45m

Washington, D.C. Reagan-National

Thu 8/20

7:25 am-2:10 pm

1 stop8h 45m

$202

SpokaneWashington, D.C.

GEG - DCA

GEGDCA

Spokane

Tue 12/1

5:20 am-3:34 pm

1 stop7h 14m

Washington, D.C. Reagan-National

Tue 12/8

6:10 am-11:44 am

1 stop8h 34m

$203

BoiseWashington, D.C.

BOI - DCA

BOIDCA

Boise Air Term. Gowen Fld

Thu 8/20

12:10 pm-11:55 pm

1 stop9h 45m

Washington, D.C. Reagan-National

Thu 8/27

4:55 pm-11:55 pm

2 stops9h 00m

$207

BoiseWashington, D.C.

BOI - DCA

BOIDCA

Boise Air Term. Gowen Fld

Tue 8/11

1:24 pm-12:51 pm

1 stop21h 27m

Washington, D.C. Reagan-National

Tue 8/25

7:00 am-12:29 pm

1 stop7h 29m

$242

Idaho FallsWashington, D.C.

IDA - DCA

IDADCA

Idaho Falls Fanning Field

Sat 10/31

6:09 am-4:25 pm

1 stop8h 16m

Washington, D.C. Reagan-National

Tue 11/3

5:00 pm-11:42 pm

1 stop8h 42m

$474

HaileyWashington, D.C.

SUN - DCA

SUNDCA

Hailey Sun Valley-Friedman

Thu 7/23

8:15 am-6:12 pm

1 stop7h 57m

Washington, D.C. Reagan-National

Mon 7/27

11:57 am-6:58 pm

1 stop9h 01m

$489

HaileyWashington, D.C.

SUN - DCA

SUNDCA

Hailey Sun Valley-Friedman

Sat 10/31

11:53 am-9:59 pm

1 stop8h 06m

Washington, D.C. Reagan-National

Tue 11/3

8:00 am-10:51 am

1 stop28h 51m

$501

HaileyWashington, D.C.

SUN - DCA

SUNDCA

Hailey Sun Valley-Friedman

Tue 7/28

8:15 am-6:11 pm

1 stop7h 56m

Washington, D.C. Reagan-National

Wed 8/5

11:57 am-6:58 pm

1 stop9h 01m

$589

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Idaho to Washington, D.C. Reagan-National Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

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

The month of May is, on average, the cheapest month to fly to Washington, D.C. Reagan-National Airport from Idaho, with most prices found around $78. If you aren’t able to travel to Washington, D.C. Reagan-National Airport during the month of May, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $170.

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

You are more likely to see cheaper flights to Washington, D.C. Reagan-National Airport from Idaho when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Reagan-National Airport for around $532 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Reagan-National Airport from Idaho for as low as $221 on momondo.

Can stopping save me money on Idaho to Washington, D.C. Reagan-National Airport flights?

You could potentially save up to 65% on your flight if you consider stops on a Idaho to Washington, D.C. Reagan-National Airport flight.

Cheap Idaho to Washington, D.C. Reagan-National Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Idaho to Washington, D.C. Reagan-National Airport

Fastest flight time	6h 07m
Direct flights	None

The fastest flight from Idaho to Washington, D.C. Reagan-National Airport takes 6h 07m

There are no direct flights from Idaho to Washington, D.C. Reagan-National Airport. There are no popular flight routes from Idaho to Washington, D.C. Reagan-National Airport.

Search flight deals

Frequently asked questions about flying from Idaho to Washington, D.C. Reagan-National Airport

When did momondo last update prices for flights from Idaho to Washington, D.C. Reagan-National Airport?
Prices for flights from Idaho to Washington, D.C. Reagan-National Airport are updated daily.
How many operators does momondo search for flights from Idaho to Washington, D.C. Reagan-National Airport?
There are 5 operators available for flights from Idaho to Washington, D.C. Reagan-National Airport as of July 2026.
How old do you have to be to fly from Idaho to Washington, D.C. Reagan-National Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Idaho to Washington, D.C. Reagan-National Airport.
What documentation or ID do you need to fly to Washington, D.C. Reagan-National Airport?
The travel and health documents you'll need for your trip to Washington, D.C. Reagan-National Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Washington, D.C. Reagan-National Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Idaho to Washington, D.C. Reagan-National Airport

Compare and see reviews for airlines that fly from Idaho to Washington, D.C. Reagan-National Airport with momondo

Airline	Rating	Free Cancellation	Price
American Airlines	PriceFrom $277	Free Cancellation	Rating 7.1 11,811 reviews	Search American Airlines flights
Delta	PriceFrom $279	Free Cancellation	Rating 7.8 8,464 reviews	Search Delta flights
Alaska Airlines	PriceFrom $300	Free Cancellation	Rating 7.9 12,654 reviews	Search Alaska Airlines flights
United Airlines	PriceFrom $352	Free Cancellation	Rating 7.4 9,985 reviews	Search United Airlines flights
Southwest	PriceFrom $390	Free Cancellation	Rating 8.0 4,249 reviews	Search Southwest flights

Alexandria

National Harbor

Arlington

Gettysburg

Waldorf

Laurel

Woodbridge

Fredericksburg

Gaithersburg

Linthicum Heights

Rockville

Colonial Beach

Towson

Manassas

Silver Spring

Tysons

Springfield

Fairfax

Bethesda

Edgewood

Why use momondo?

Why should I use momondo to find a flight deal from Idaho to Washington, D.C.?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Washington, D.C. from Idaho.

Can I find flights from Idaho to Washington, D.C. with flexible booking policies on momondo?

Yes. All flights to Washington, D.C. from Idaho on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Idaho to Washington, D.C.?

Once all potential Idaho to Washington, D.C. flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Idaho to Washington, D.C. right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Idaho to Washington, D.C. flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Cheap flights from Idaho to Washington, D.C. from $98

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Idaho to Washington, D.C. departing on 9/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Southwest flights from Idaho to Washington, D.C. Reagan-National Airport

Our best Southwest deals on Idaho to Washington, D.C. Reagan-National Airport flight tickets

Alaska Airlines flights from Idaho to Washington, D.C. Reagan-National Airport

Our best Alaska Airlines deals on Idaho to Washington, D.C. Reagan-National Airport flight tickets

momondo 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.

See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from Idaho to Washington, D.C. Reagan-National Airport

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

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

Can stopping save me money on Idaho to Washington, D.C. Reagan-National Airport flights?

What is the cheapest airline that flies from Idaho to Washington, D.C. Reagan-National?

What airlines fly to Washington, D.C. Reagan-National Airport?

How many flights depart from Idaho to Washington, D.C. Reagan-National Airport on average per week?

How long does it take to fly to Washington, D.C. Reagan-National Airport?

Cheap Idaho to Washington, D.C. Reagan-National Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Idaho to Washington, D.C. Reagan-National Airport

Fastest flight time

Direct flights

Frequently asked questions about flying from Idaho to Washington, D.C. Reagan-National Airport

Best airlines flying from Idaho to Washington, D.C. Reagan-National Airport

Compare and see reviews for airlines that fly from Idaho to Washington, D.C. Reagan-National Airport with momondo

Traveling to a place near Washington, D.C.?

Why use momondo?

An easier way to manage your Washington, D.C. Reagan-National Airport trip

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