What is the cheapest airline that flies from District of Columbia to Idaho?

United Airlines, Delta, and Alaska Airlines are the most popular carriers operating from District of Columbia to Idaho

What airlines fly to Idaho?

United Airlines, Delta and Southwest are the top three most popular airlines that fly to Idaho from District of Columbia according to our data. United Airlines is the first choice among our users, with 44% 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 District of Columbia to Idaho?

Prices for flights from District of Columbia to Idaho are refreshed on a daily basis.

How many operators does momondo search for flights from District of Columbia to Idaho?

As of June 2026, there are 5 operators available to choose from for flights from District of Columbia to Idaho.

How old do you have to be to fly from District of Columbia to Idaho?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from District of Columbia to Idaho.

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

The travel and health documents required for your trip to Idaho can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Idaho. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$99 Cheap Flights from District of Columbia to Idaho in 2026

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from District of Columbia to Idaho

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:45 am - 12:53 pm

DCA

GEG

8h 08m

1 stop

5:20 am - 3:32 pm

GEG

DCA

7h 12m

1 stop

$197Delta

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

9:07 am - 1:37 pm

DCA

GEG

7h 30m

1 stop

12:44 pm - 11:58 pm

GEG

DCA

8h 14m

1 stop

$228American Airlines

Wed, Aug 19 - Wed, Aug 26

2:53 pm - 8:42 pm

IAD

GEG

8h 49m

1 stop

5:40 am - 6:27 pm

GEG

IAD

9h 47m

1 stop

$239American Airlines

Sat, Aug 29 - Sat, Sep 5

1:10 pm - 6:46 pm

IAD

JAC

7h 36m

1 stop

7:00 am - 4:40 pm

JAC

IAD

7h 40m

1 stop

$241United Airlines

Fri, Oct 23 - Tue, Oct 27

7:00 am - 2:40 pm

IAD

GEG

10h 40m

1 stop

12:44 pm - 11:59 pm

GEG

IAD

8h 15m

1 stop

$275Alaska Airlines

Sat, Oct 24 - Wed, Oct 28

11:30 am - 6:46 pm

DCA

JAC

9h 16m

1 stop

8:00 am - 4:57 pm

JAC

DCA

6h 57m

1 stop

$299United Airlines

Sun, Oct 11 - Sat, Oct 17

4:35 pm - 11:35 pm

DCA

BOI

9h 00m

1 stop

12:10 pm - 11:55 pm

BOI

DCA

9h 45m

1 stop

$300Southwest

Thu, Aug 27 - Mon, Aug 31

4:30 pm - 11:35 pm

DCA

BOI

9h 05m

2 stops

12:10 pm - 11:55 pm

BOI

DCA

9h 45m

1 stop

$306Southwest

Thu, Aug 27 - Mon, Aug 31

5:57 pm - 11:59 pm

IAD

GEG

9h 02m

1 stop

12:33 pm - 11:59 pm

GEG

IAD

8h 26m

1 stop

$311Alaska Airlines

Tue, Sep 15 - Tue, Sep 22

Frontier flights from District of Columbia to Idaho

Our best Frontier deals on District of Columbia to Idaho flight tickets

Frontier

Aug 9

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

7h 29m

1 stop

BOI12:29 pmBoise Air Term. Gowen Fld

Aug 13

BOI1:24 pmBoise Air Term. Gowen Fld

6h 35m

1 stop

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

$288

Frontier

Aug 9

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

$337

Frontier

Aug 4

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

7h 29m

1 stop

BOI12:29 pmBoise Air Term. Gowen Fld

Aug 13

BOI1:24 pmBoise Air Term. Gowen Fld

6h 35m

1 stop

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

$364

Delta flights from District of Columbia to Idaho

Our best Delta deals on District of Columbia to Idaho flight tickets

Delta

Aug 18

IAD7:10 amWashington, D.C. Dulles Intl

8h 06m

1 stop

GEG12:16 pmSpokane

Aug 24

GEG10:56 pmSpokane

7h 24m

1 stop

IAD9:20 amWashington, D.C. Dulles Intl

$208

Delta

Aug 29

DCA4:35 pmWashington, D.C. Reagan-National

8h 00m

1 stop

GEG9:35 pmSpokane

Sep 5

GEG5:30 amSpokane

8h 14m

1 stop

DCA4:44 pmWashington, D.C. Reagan-National

$219

Delta

Aug 26

IAD3:03 pmWashington, D.C. Dulles Intl

7h 08m

1 stop

JAC8:11 pmJackson Hole

Sep 2

JAC1:10 pmJackson Hole

9h 24m

2 stops

IAD12:34 amWashington, D.C. Dulles Intl

$246

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Spokane

DCA - GEG

DCAGEG

Washington, D.C. Reagan-National

Tue 9/15

7:45 am-12:53 pm

1 stop8h 08m

Spokane

Tue 9/22

5:20 am-3:32 pm

1 stop7h 12m

$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

Washington, D.C.Spokane

DCA - GEG

DCAGEG

Washington, D.C. Reagan-National

Wed 8/19

9:07 am-1:37 pm

1 stop7h 30m

Spokane

Wed 8/26

12:44 pm-11:58 pm

1 stop8h 14m

$228

Washington, D.C.Spokane

IAD - GEG

IADGEG

Washington, D.C. Dulles Intl

Sat 8/29

2:53 pm-8:42 pm

1 stop8h 49m

Spokane

Sat 9/5

5:40 am-6:27 pm

1 stop9h 47m

$239

Quickest round-trip

Washington, D.C.Jackson

IAD - JAC

IADJAC

Washington, D.C. Dulles Intl

Fri 10/23

1:10 pm-6:46 pm

1 stop7h 36m

Jackson Hole

Tue 10/27

7:00 am-4:40 pm

1 stop7h 40m

$241

Washington, D.C.Spokane

IAD - GEG

IADGEG

Washington, D.C. Dulles Intl

Sat 10/24

7:00 am-2:40 pm

1 stop10h 40m

Spokane

Wed 10/28

12:44 pm-11:59 pm

1 stop8h 15m

$275

Washington, D.C.Jackson

DCA - JAC

DCAJAC

Washington, D.C. Reagan-National

Sun 10/11

11:30 am-6:46 pm

1 stop9h 16m

Jackson Hole

Sat 10/17

8:00 am-4:57 pm

1 stop6h 57m

$299

Washington, D.C.Boise

DCA - BOI

DCABOI

Washington, D.C. Reagan-National

Thu 8/27

4:35 pm-11:35 pm

1 stop9h 00m

Boise Air Term. Gowen Fld

Mon 8/31

12:10 pm-11:55 pm

1 stop9h 45m

$300

Washington, D.C.Boise

DCA - BOI

DCABOI

Washington, D.C. Reagan-National

Thu 8/27

4:30 pm-11:35 pm

2 stops9h 05m

Boise Air Term. Gowen Fld

Mon 8/31

12:10 pm-11:55 pm

1 stop9h 45m

$306

Washington, D.C.Spokane

IAD - GEG

IADGEG

Washington, D.C. Dulles Intl

Tue 9/15

5:57 pm-11:59 pm

1 stop9h 02m

Spokane

Tue 9/22

12:33 pm-11:59 pm

1 stop8h 26m

$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 District of Columbia 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

What is the cheapest month to fly to Idaho?

In general, July is the cheapest month to fly from District of Columbia 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 District of Columbia, when ticket prices are also cheap, with an average price of $135.

Can stopping save me money on District of Columbia to Idaho flights?

You could potentially save up to 27% on your flight if you consider stops on a District of Columbia to Idaho flight.

Cheap District of Columbia to Idaho flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from District of Columbia to Idaho

Fastest flight time	4h 40m
Direct flights	None

The fastest flight from District of Columbia to Idaho takes 4h 40m

There are no direct flights from District of Columbia to Idaho. There are no popular flight routes from District of Columbia to Idaho.

Search flight deals

Frequently asked questions about flying from District of Columbia to Idaho

When did momondo last update prices for flights from District of Columbia to Idaho?
Prices for flights from District of Columbia to Idaho are refreshed on a daily basis.
How many operators does momondo search for flights from District of Columbia to Idaho?
As of June 2026, there are 5 operators available to choose from for flights from District of Columbia to Idaho.
How old do you have to be to fly from District of Columbia to Idaho?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from District of Columbia to Idaho.
What documentation or ID do you need to fly to Idaho?
The travel and health documents required for your trip to Idaho can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Idaho. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from District of Columbia to Idaho

Compare and see reviews for airlines that fly from District of Columbia to Idaho with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $150	Free Cancellation	Rating 7.9 8,397 reviews	Search Delta flights
United Airlines	PriceFrom $221	Free Cancellation	Rating 7.4 9,778 reviews	Search United Airlines flights
Southwest	PriceFrom $256	Free Cancellation	Rating 8.0 4,256 reviews	Search Southwest flights
American Airlines	PriceFrom $262	Free Cancellation	Rating 7.1 11,639 reviews	Search American Airlines flights
Alaska Airlines	PriceFrom $321	Free Cancellation	Rating 7.9 12,450 reviews	Search Alaska Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from District of Columbia to Idaho?

It is quick and easy to find District of Columbia to Idaho flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Idaho that suits you.

Can I find flights from District of Columbia to Idaho with flexible booking policies on momondo?

Yes. All flights to Idaho from District of Columbia on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from District of Columbia to Idaho?

momondo provides multiple filters to help you find the best flight to Idaho from District of Columbia. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from District of Columbia to Idaho right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Idaho from District of Columbia. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.