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 45% 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.

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

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

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 35m on average. Another popular route from Washington, D.C. to Idaho is flying from Washington, D.C. to Boise, which will take roughly 6h 58m. Keep in mind that layovers or delays could extend your travel time.

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

As of June 2026, 3 flights take off from Washington, D.C. and land in Idaho each week. The most common flight departure day for this route is Mon, with 33% 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 June 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.

$98 Cheap Flights from Washington, D.C. to Idaho in 2026

Discover deals from 900+ travel sites with momondo.

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.

7:17 pm - 11:59 pm

BWI

BOI

6h 42m

1 stop

6:45 pm - 6:20 am

BOI

BWI

9h 35m

1 stop

$197Delta

Tue, Aug 25 - Wed, Aug 26

7:40 am - 1:19 pm

DCA

GEG

8h 39m

1 stop

2:09 pm - 11:59 pm

GEG

DCA

6h 50m

1 stop

$197American Airlines

Tue, Sep 15 - Tue, Sep 22

7:10 am - 12:20 pm

IAD

GEG

8h 10m

1 stop

9:17 am - 10:49 pm

GEG

IAD

10h 32m

1 stop

$197Delta

Tue, Sep 15 - Tue, Sep 22

5:40 pm - 10:55 pm

BWI

GEG

8h 15m

1 stop

4:55 pm - 6:35 am

GEG

BWI

10h 40m

1 stop

$218Southwest

Tue, Aug 25 - Wed, Sep 2

9:07 am - 1:37 pm

DCA

GEG

7h 30m

1 stop

12:44 pm - 11:58 pm

GEG

DCA

8h 14m

1 stop

$219American Airlines

Sat, Aug 29 - Sat, Sep 5

6:30 am - 1:40 pm

BWI

BOI

9h 10m

2 stops

2:20 pm - 6:30 am

BOI

BWI

14h 10m

1 stop

$222Southwest

Tue, Aug 25 - Wed, Aug 26

1:10 pm - 6:51 pm

IAD

JAC

7h 41m

1 stop

4:25 pm - 12:32 am

JAC

IAD

6h 07m

1 stop

$241United Airlines

Fri, Aug 28 - Fri, Sep 4

7:50 am - 12:39 pm

BWI

GEG

7h 49m

1 stop

1:36 pm - 6:30 am

GEG

BWI

13h 54m

1 stop

$283Alaska Airlines

Wed, Sep 16 - Tue, Sep 22

5:47 pm - 10:25 pm

IAD

GEG

7h 38m

1 stop

6:00 am - 6:14 pm

GEG

IAD

9h 14m

1 stop

$295Alaska Airlines

Sat, Sep 5 - Sat, Sep 12

2:47 pm - 10:36 pm

IAD

GEG

10h 49m

1 stop

1:37 pm - 11:19 pm

GEG

IAD

6h 42m

1 stop

$302United Airlines

Mon, Aug 24 - Tue, Sep 1

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Delta flights from Washington, D.C. to Idaho

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

Delta

Aug 25

BWI7:17 pmBaltimore/Washington

6h 42m

1 stop

BOI11:59 pmBoise Air Term. Gowen Fld

Aug 26

BOI6:45 pmBoise Air Term. Gowen Fld

9h 35m

1 stop

BWI6:20 amBaltimore/Washington

$197

Delta

Sep 29

IAD7:10 amWashington, D.C. Dulles Intl

8h 10m

1 stop

GEG12:20 pmSpokane

Oct 1

GEG9:17 amSpokane

10h 32m

1 stop

IAD10:49 pmWashington, D.C. Dulles Intl

$208

Delta

Aug 24

BWI7:00 amBaltimore/Washington

7h 49m

1 stop

BOI12:49 pmBoise Air Term. Gowen Fld

Aug 26

BOI6:45 pmBoise Air Term. Gowen Fld

9h 35m

1 stop

BWI6:20 amBaltimore/Washington

$214

Frontier flights from Washington, D.C. to Idaho

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

Frontier

Aug 2

DCA7:00 amWashington, D.C. Reagan-National

7h 29m

1 stop

BOI12:29 pmBoise Air Term. Gowen Fld

Aug 11

BOI1:24 pmBoise Air Term. Gowen Fld

6h 35m

1 stop

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

$383

Frontier

Aug 2

DCA7:00 amWashington, D.C. Reagan-National

7h 29m

1 stop

BOI12:29 pmBoise Air Term. Gowen Fld

Aug 11

BOI1:24 pmBoise Air Term. Gowen Fld

6h 35m

1 stop

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

$384

Frontier

Jun 26

DCA7:00 amWashington, D.C. Reagan-National

7h 36m

1 stop

GEG11:36 amSpokane

Jun 29

GEG12:31 pmSpokane

25h 26m

1 stop

DCA4:57 pmWashington, D.C. Reagan-National

$602

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

Tue 8/25

7:17 pm-11:59 pm

1 stop6h 42m

Boise Air Term. Gowen Fld

Wed 8/26

6:45 pm-6:20 am

1 stop9h 35m

$197

Washington, D.C.Spokane

DCA - GEG

DCAGEG

Washington, D.C. Reagan-National

Tue 9/15

7:40 am-1:19 pm

1 stop8h 39m

Spokane

Tue 9/22

2:09 pm-11:59 pm

1 stop6h 50m

$197

Washington, D.C.Spokane

IAD - GEG

IADGEG

Washington, D.C. Dulles Intl

Tue 9/15

7:10 am-12:20 pm

1 stop8h 10m

Spokane

Tue 9/22

9:17 am-10:49 pm

1 stop10h 32m

$197

BaltimoreSpokane

BWI - GEG

BWIGEG

Baltimore/Washington

Tue 8/25

5:40 pm-10:55 pm

1 stop8h 15m

Spokane

Wed 9/2

4:55 pm-6:35 am

1 stop10h 40m

$218

Washington, D.C.Spokane

DCA - GEG

DCAGEG

Washington, D.C. Reagan-National

Sat 8/29

9:07 am-1:37 pm

1 stop7h 30m

Spokane

Sat 9/5

12:44 pm-11:58 pm

1 stop8h 14m

$219

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

Tue 8/25

6:30 am-1:40 pm

2 stops9h 10m

Boise Air Term. Gowen Fld

Wed 8/26

2:20 pm-6:30 am

1 stop14h 10m

$222

Quickest round-trip

Washington, D.C.Jackson

IAD - JAC

IADJAC

Washington, D.C. Dulles Intl

Fri 8/28

1:10 pm-6:51 pm

1 stop7h 41m

Jackson Hole

Fri 9/4

4:25 pm-12:32 am

1 stop6h 07m

$241

BaltimoreSpokane

BWI - GEG

BWIGEG

Baltimore/Washington

Wed 9/16

7:50 am-12:39 pm

1 stop7h 49m

Spokane

Tue 9/22

1:36 pm-6:30 am

1 stop13h 54m

$283

Washington, D.C.Spokane

IAD - GEG

IADGEG

Washington, D.C. Dulles Intl

Sat 9/5

5:47 pm-10:25 pm

1 stop7h 38m

Spokane

Sat 9/12

6:00 am-6:14 pm

1 stop9h 14m

$295

Washington, D.C.Spokane

IAD - GEG

IADGEG

Washington, D.C. Dulles Intl

Mon 8/24

2:47 pm-10:36 pm

1 stop10h 49m

Spokane

Tue 9/1

1:37 pm-11:19 pm

1 stop6h 42m

$302

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, July 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 $125. If you don’t want to visit Idaho in July, then you should wait until August to fly from Washington, D.C., when ticket prices are also cheap, with an average price of $135.

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

You could potentially save up to 35% 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.

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Frequently asked questions about flying from Washington, D.C. to Idaho

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 June 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 8,405 reviews	Search Delta flights
United Airlines	PriceFrom $221	Free Cancellation	Rating 7.4 9,842 reviews	Search United Airlines flights
Southwest	PriceFrom $256	Free Cancellation	Rating 7.9 4,237 reviews	Search Southwest flights
American Airlines	PriceFrom $262	Free Cancellation	Rating 7.1 11,667 reviews	Search American Airlines flights
Alaska Airlines	PriceFrom $321	Free Cancellation	Rating 7.9 12,522 reviews	Search Alaska 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.