How long is the flight from Washington, D.C. to Idaho?

Flight times from Washington, D.C. to Idaho vary, but if you’re flying out of Baltimore and flying into Boise (one of the most popular routes), then the duration is 6h 40m on average. Another popular route from Washington, D.C. to Idaho is flying from Washington, D.C. to Boise, which will take roughly 6h 46m. Keep in mind that layovers or delays could extend your travel time.

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

Southwest, Frontier, and United Airlines are the most popular carriers operating from Washington, D.C. to Idaho

What airlines fly to Idaho?

United Airlines, Delta and Southwest are the top three most popular airlines that fly to Idaho from Washington, D.C. according to our data. United Airlines is the first choice among our users, with 40% of people opting to fly with this airline when traveling to Idaho. Keep in mind that there are 5 different airlines that fly to Idaho on a routine basis, so you have a few additional options to choose from.

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

As of March 2026, 1 flights take off from Washington, D.C. and land in Idaho each week. The most common flight departure day for this route is Sat, with 100% of weekly flights taking off on this day.

When did momondo last update prices for flights from Washington, D.C. to Idaho?

Prices for flights from Washington, D.C. to Idaho were last updated today.

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

The number of operators available for flights from Washington, D.C. to Idaho is 5 as of March 2026.

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

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. to Idaho.

What documentation or ID do you need to fly to Idaho?

The travel and health documents you'll need for your trip to Idaho 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 Idaho. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$128 Cheap Flights from Washington, D.C. to Idaho in 2026

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

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:00 am - 10:49 am

DCA

GEG

29h 49m

1 stop

11:44 am - 4:59 pm

GEG

DCA

26h 15m

1 stop

$162Frontier

Sat, Apr 18 - Sun, Apr 26

1:59 pm - 10:49 am

DCA

GEG

23h 50m

1 stop

11:44 am - 1:00 pm

GEG

DCA

22h 16m

1 stop

$220Frontier

Sat, Apr 18 - Sun, Apr 26

3:00 pm - 9:31 pm

IAD

GEG

9h 31m

1 stop

1:07 pm - 11:55 pm

GEG

IAD

7h 48m

1 stop

$271Delta

Tue, Apr 21 - Tue, Apr 28

6:58 am - 12:32 pm

DCA

GEG

8h 34m

1 stop

1:22 pm - 11:57 pm

GEG

DCA

7h 35m

1 stop

$271American Airlines

Wed, Apr 15 - Wed, Apr 22

12:12 pm - 9:56 pm

IAD

BOI

11h 44m

2 stops

1:53 pm - 12:51 am

BOI

IAD

8h 58m

1 stop

$276Delta

Tue, May 5 - Sat, May 16

5:39 am - 12:32 pm

BWI

GEG

9h 53m

1 stop

1:22 pm - 11:56 pm

GEG

BWI

7h 34m

1 stop

$297American Airlines

Tue, Apr 21 - Tue, Apr 28

7:10 am - 3:33 pm

IAD

BOI

10h 23m

1 stop

6:00 am - 6:20 pm

BOI

IAD

10h 20m

1 stop

$302Alaska Airlines

Tue, Apr 28 - Thu, May 7

7:04 am - 1:52 pm

BWI

BOI

8h 48m

1 stop

6:08 pm - 5:44 am

BOI

BWI

9h 36m

1 stop

$325Alaska Airlines

Tue, Apr 28 - Thu, May 7

4:18 pm - 9:11 pm

BWI

GEG

7h 53m

1 stop

1:46 pm - 11:24 pm

GEG

BWI

6h 38m

1 stop

$327United Airlines

Tue, Apr 14 - Sat, Apr 18

4:18 pm - 9:34 pm

BWI

BOI

7h 16m

1 stop

7:03 pm - 6:00 am

BOI

BWI

8h 57m

1 stop

$330United Airlines

Sat, Apr 25 - Mon, Apr 27

Southwest flights from Washington, D.C. to Idaho

Our best Southwest deals on Washington, D.C. to Idaho flight tickets

Southwest

May 5

IAD5:30 pmWashington, D.C. Dulles Intl

8h 00m

1 stop

BOI11:30 pmBoise Air Term. Gowen Fld

May 16

BOI2:50 pmBoise Air Term. Gowen Fld

6h 05m

1 stop

IAD10:55 pmWashington, D.C. Dulles Intl

$271

Southwest

May 5

IAD6:20 amWashington, D.C. Dulles Intl

19h 10m

2 stops

BOI11:30 pmBoise Air Term. Gowen Fld

May 16

BOI2:50 pmBoise Air Term. Gowen Fld

6h 05m

1 stop

IAD10:55 pmWashington, D.C. Dulles Intl

$282

Southwest

Apr 15

BWI2:50 pmBaltimore/Washington

11h 05m

2 stops

GEG10:55 pmSpokane

Apr 22

GEG1:45 pmSpokane

12h 35m

1 stop

BWI5:20 amBaltimore/Washington

$308

Delta flights from Washington, D.C. to Idaho

Our best Delta deals on Washington, D.C. to Idaho flight tickets

Delta

Apr 21

IAD3:00 pmWashington, D.C. Dulles Intl

9h 31m

1 stop

GEG9:31 pmSpokane

Apr 28

GEG1:07 pmSpokane

7h 48m

1 stop

IAD11:55 pmWashington, D.C. Dulles Intl

$271

Delta

May 5

IAD12:12 pmWashington, D.C. Dulles Intl

11h 44m

2 stops

BOI9:56 pmBoise Air Term. Gowen Fld

May 16

BOI1:53 pmBoise Air Term. Gowen Fld

8h 58m

1 stop

IAD12:51 amWashington, D.C. Dulles Intl

$276

Delta

Apr 21

IAD3:00 pmWashington, D.C. Dulles Intl

11h 34m

2 stops

GEG11:34 pmSpokane

Apr 28

GEG7:38 pmSpokane

13h 27m

2 stops

IAD12:05 pmWashington, D.C. Dulles Intl

$282

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Spokane

DCA - GEG

DCAGEG

Washington, D.C. Reagan-National

Sat 4/18

8:00 am-10:49 am

1 stop29h 49m

Spokane

Sun 4/26

11:44 am-4:59 pm

1 stop26h 15m

$162

Washington, D.C.Spokane

DCA - GEG

DCAGEG

Washington, D.C. Reagan-National

Sat 4/18

1:59 pm-10:49 am

1 stop23h 50m

Spokane

Sun 4/26

11:44 am-1:00 pm

1 stop22h 16m

$220

Washington, D.C.Spokane

IAD - GEG

IADGEG

Washington, D.C. Dulles Intl

Tue 4/21

3:00 pm-9:31 pm

1 stop9h 31m

Spokane

Tue 4/28

1:07 pm-11:55 pm

1 stop7h 48m

$271

Washington, D.C.Spokane

DCA - GEG

DCAGEG

Washington, D.C. Reagan-National

Wed 4/15

6:58 am-12:32 pm

1 stop8h 34m

Spokane

Wed 4/22

1:22 pm-11:57 pm

1 stop7h 35m

$271

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Tue 5/5

12:12 pm-9:56 pm

2 stops11h 44m

Boise Air Term. Gowen Fld

Sat 5/16

1:53 pm-12:51 am

1 stop8h 58m

$276

BaltimoreSpokane

BWI - GEG

BWIGEG

Baltimore/Washington

Tue 4/21

5:39 am-12:32 pm

1 stop9h 53m

Spokane

Tue 4/28

1:22 pm-11:56 pm

1 stop7h 34m

$297

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Tue 4/28

7:10 am-3:33 pm

1 stop10h 23m

Boise Air Term. Gowen Fld

Thu 5/7

6:00 am-6:20 pm

1 stop10h 20m

$302

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

Tue 4/28

7:04 am-1:52 pm

1 stop8h 48m

Boise Air Term. Gowen Fld

Thu 5/7

6:08 pm-5:44 am

1 stop9h 36m

$325

Quickest round-trip

BaltimoreSpokane

BWI - GEG

BWIGEG

Baltimore/Washington

Tue 4/14

4:18 pm-9:11 pm

1 stop7h 53m

Spokane

Sat 4/18

1:46 pm-11:24 pm

1 stop6h 38m

$327

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

Sat 4/25

4:18 pm-9:34 pm

1 stop7h 16m

Boise Air Term. Gowen Fld

Mon 4/27

7:03 pm-6:00 am

1 stop8h 57m

$330

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 Washington, D.C. to Idaho

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 Idaho?

In general, April is the cheapest month to fly from Washington, D.C. to Idaho. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $265. If you don’t want to visit Idaho in April, then you should wait until May to fly from Washington, D.C., when ticket prices are also cheap, with an average price of $300.

Can stopping save me money on Washington, D.C. to Idaho flights?

You could potentially save up to 26% on your flight if you consider stops on a Washington, D.C. to Idaho flight.

Cheap Washington, D.C. to Idaho flight deals and tips

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

Fastest flight time	4h 40m
Direct flights	None

The fastest flight from Washington, D.C. to Idaho takes 4h 40m

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

Search flight deals

When did momondo last update prices for flights from Washington, D.C. to Idaho?
Prices for flights from Washington, D.C. to Idaho were last updated today.
How many operators does momondo search for flights from Washington, D.C. to Idaho?
The number of operators available for flights from Washington, D.C. to Idaho is 5 as of March 2026.
How old do you have to be to fly from Washington, D.C. to Idaho?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. to Idaho.
What documentation or ID do you need to fly to Idaho?
The travel and health documents you'll need for your trip to Idaho 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 Idaho. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Washington, D.C. to Idaho

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

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $150	Free Cancellation	Rating 7.9 8,313 reviews	Search Delta flights
Alaska Airlines	PriceFrom $182	Free Cancellation	Rating 7.9 12,091 reviews	Search Alaska Airlines flights
United Airlines	PriceFrom $221	Free Cancellation	Rating 7.4 9,451 reviews	Search United Airlines flights
Southwest	PriceFrom $256	Free Cancellation	Rating 8.0 4,325 reviews	Search Southwest flights
American Airlines	PriceFrom $300	Free Cancellation	Rating 7.1 11,488 reviews	Search American Airlines flights

Why use momondo?

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

Finding the right flight to Idaho from Washington, D.C. is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Idaho quick and easy, saving you time and money.

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

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

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

Once all potential Washington, D.C. to Idaho 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 Washington, D.C. to Idaho right now. Can momondo alert me if prices change?

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