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 Washington, D.C. 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 Baltimore 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?

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

What airlines fly to Idaho?

Delta, United Airlines and Southwest are the top three most popular airlines that fly to Idaho from Washington, D.C. according to our data. Delta 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.

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 July 2025.

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.

$93 Cheap Flights from Washington, D.C. to Idaho in 2025

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

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

8:09 am - 5:11 pmBWI-BOI

11h 02m1 stop

2:16 pm - 4:30 amBOI-BWI

12h 14m1 stop

$159Spirit Airlines

Find Deal

jue., ago. 28 - jue., sep. 4

6:30 am - 5:11 pmBWI-BOI

12h 41m1 stop

6:06 pm - 5:15 amBOI-BWI

9h 09m1 stop

$201Spirit Airlines

Find Deal

lun., ago. 18 - jue., ago. 21

12:35 pm - 7:49 pmIAD-JAC

9h 14m1 stop

1:00 pm - 11:33 pmJAC-IAD

8h 33m1 stop

$257Delta

Find Deal

lun., sep. 15 - vie., sep. 19

1:40 pm - 7:49 pmDCA-JAC

8h 09m1 stop

7:30 am - 4:11 pmJAC-DCA

6h 41m1 stop

$257Delta

Find Deal

lun., sep. 15 - vie., sep. 19

9:00 am - 11:40 amIAD-JAC

4h 40mnonstop

2:30 pm - 8:45 pmJAC-IAD

4h 15mnonstop

$269United Airlines

Find Deal

sáb., ene. 3 - sáb., ene. 10

6:09 pm - 12:08 amIAD-BOI

7h 59m1 stop

7:17 pm - 7:33 amBOI-IAD

10h 16m1 stop

$273Alaska Airlines

Find Deal

vie., sep. 12 - vie., sep. 19

12:40 pm - 5:30 pmIAD-JAC

6h 50m1 stop

2:30 pm - 8:45 pmJAC-IAD

4h 15mnonstop

$279United Airlines

Find Deal

sáb., ene. 3 - sáb., ene. 10

6:25 am - 11:06 amIAD-GEG

7h 41m1 stop

7:30 am - 6:28 pmGEG-IAD

7h 58m1 stop

$296Alaska Airlines

Find Deal

sáb., oct. 18 - sáb., oct. 25

3:30 pm - 9:30 pmBWI-GEG

9h 00m1 stop

6:15 am - 7:45 pmGEG-BWI

10h 30m1 stop

$308Southwest

Find Deal

mié., ago. 27 - mié., sep. 3

4:40 pm - 12:25 amDCA-BOI

9h 45m2 stops

6:00 am - 6:15 pmBOI-DCA

10h 15m2 stops

$311Southwest

Find Deal

vie., ago. 22 - mar., ago. 26

Alaska Airlines flights from Washington, D.C. to Idaho

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

Alaska Airlines

Sep 12

IAD6:09 pmWashington, D.C. Dulles Intl

7h 59m

1 stop

BOI12:08 amBoise Air Term. Gowen Fld

Sep 19

BOI7:17 pmBoise Air Term. Gowen Fld

10h 16m

1 stop

IAD7:33 amWashington, D.C. Dulles Intl

$273

Find similar

Alaska Airlines

Oct 18

IAD6:25 amWashington, D.C. Dulles Intl

7h 41m

1 stop

GEG11:06 amSpokane

Oct 25

GEG7:30 amSpokane

7h 58m

1 stop

IAD6:28 pmWashington, D.C. Dulles Intl

$296

Find similar

Alaska Airlines

Aug 23

DCA5:06 pmWashington, D.C. Reagan-National

8h 53m

1 stop

BOI11:59 pmBoise Air Term. Gowen Fld

Aug 25

BOI7:07 amBoise Air Term. Gowen Fld

12h 52m

1 stop

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

$300

Find similar

Spirit Airlines flights from Washington, D.C. to Idaho

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

Spirit Airlines

Aug 28

BWI8:09 amBaltimore/Washington

11h 02m

1 stop

BOI5:11 pmBoise Air Term. Gowen Fld

Sep 4

BOI2:16 pmBoise Air Term. Gowen Fld

12h 14m

1 stop

BWI4:30 amBaltimore/Washington

$159

Find similar

Spirit Airlines

Aug 18

BWI6:30 amBaltimore/Washington

12h 41m

1 stop

BOI5:11 pmBoise Air Term. Gowen Fld

Aug 21

BOI6:06 pmBoise Air Term. Gowen Fld

9h 09m

1 stop

BWI5:15 amBaltimore/Washington

$201

Find similar

Spirit Airlines

Aug 21

BWI8:09 amBaltimore/Washington

11h 02m

1 stop

BOI5:11 pmBoise Air Term. Gowen Fld

Aug 24

BOI6:06 pmBoise Air Term. Gowen Fld

9h 09m

1 stop

BWI5:15 amBaltimore/Washington

$221

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

jue. 8/28

8:09 am-5:11 pm

1 stop11h 02m

Boise Air Term. Gowen Fld

jue. 9/4

2:16 pm-4:30 am

1 stop12h 14m

$159

BaltimoreBoise

BWI - BOI

BWIBOI

Baltimore/Washington

lun. 8/18

6:30 am-5:11 pm

1 stop12h 41m

Boise Air Term. Gowen Fld

jue. 8/21

6:06 pm-5:15 am

1 stop9h 09m

$201

Washington, D.C.Jackson

IAD - JAC

IADJAC

Washington, D.C. Dulles Intl

lun. 9/15

12:35 pm-7:49 pm

1 stop9h 14m

Jackson Hole

vie. 9/19

1:00 pm-11:33 pm

1 stop8h 33m

$257

Washington, D.C.Jackson

DCA - JAC

DCAJAC

Washington, D.C. Reagan-National

lun. 9/15

1:40 pm-7:49 pm

1 stop8h 09m

Jackson Hole

vie. 9/19

7:30 am-4:11 pm

1 stop6h 41m

$257

Washington, D.C.Jackson

IAD - JAC

IADJAC

Washington, D.C. Dulles Intl

sáb. 1/3

9:00 am-11:40 am

Nonstop4h 40m

Jackson Hole

sáb. 1/10

2:30 pm-8:45 pm

Nonstop4h 15m

$269

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

vie. 9/12

6:09 pm-12:08 am

1 stop7h 59m

Boise Air Term. Gowen Fld

vie. 9/19

7:17 pm-7:33 am

1 stop10h 16m

$273

Washington, D.C.Jackson

IAD - JAC

IADJAC

Washington, D.C. Dulles Intl

sáb. 1/3

12:40 pm-5:30 pm

1 stop6h 50m

Jackson Hole

sáb. 1/10

2:30 pm-8:45 pm

Nonstop4h 15m

$279

Washington, D.C.Spokane

IAD - GEG

IADGEG

Washington, D.C. Dulles Intl

sáb. 10/18

6:25 am-11:06 am

1 stop7h 41m

Spokane

sáb. 10/25

7:30 am-6:28 pm

1 stop7h 58m

$296

BaltimoreSpokane

BWI - GEG

BWIGEG

Baltimore/Washington

mié. 8/27

3:30 pm-9:30 pm

1 stop9h 00m

Spokane

mié. 9/3

6:15 am-7:45 pm

1 stop10h 30m

$308

Washington, D.C.Boise

DCA - BOI

DCABOI

Washington, D.C. Reagan-National

vie. 8/22

4:40 pm-12:25 am

2 stops9h 45m

Boise Air Term. Gowen Fld

mar. 8/26

6:00 am-6:15 pm

2 stops10h 15m

$311

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 $296. 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.

What is the cheapest day to depart on your flight to Idaho?

Our data shows that Tuesday is the least expensive day to fly to Idaho. Tickets to fly out on this day can be as low as $436. On the other hand, Friday is the most expensive day to depart from Washington, D.C. because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $563.

What is the cheapest time of day to depart on your flight to Idaho?

According to our data, the cheapest time of day to fly to Idaho is at noon. momondo users have found flights departing from Washington, D.C. to Idaho at noon for as low as $329. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In the evening is when there is more demand to fly to Idaho, so prices are often more expensive at around $716 per ticket.

How far in advance should I book a flight to Idaho?

You are more likely to see cheaper flights to Idaho from Washington, D.C. when booking weeks ahead of your departure date. In general, you can expect to find flights to Idaho for around $475 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Idaho from Washington, D.C. for as low as $351 on momondo.

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

You could potentially save up to 68% 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

Best Price Found	$93
Fastest flight time	4h 40m
Direct flights	Sun
Airports in Idaho	4 airports

The best one-way flight to Idaho from Washington, D.C. in the past 72 hours is $93. The best round-trip flight deal from Washington, D.C. to Idaho found on momondo in the last 72 hours is $159.

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

Direct flights go from Washington, D.C. to Idaho on Sunday. The only airline offering direct flights is United Airlines.

There are 4 airports near Idaho: Idaho Falls Fanning Field (IDA), Spokane (GEG), Boise Air Term. Gowen Fld (BOI), Jackson Hole (JAC)

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 July 2025.
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 $202	Free Cancellation	Rating 8.0 7,981 reviews	Search Delta flights
Alaska Airlines	PriceFrom $230	Free Cancellation	Rating 8.0 10,000 reviews	Search Alaska Airlines flights
United Airlines	PriceFrom $278	Free Cancellation	Rating 7.4 8,900 reviews	Search United Airlines flights
American Airlines	PriceFrom $327	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Southwest	PriceFrom $347	Free Cancellation	Rating 8.0 4,246 reviews	Search Southwest 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.