What airlines fly to Idaho?

American Airlines, Delta and United Airlines are the top three most popular airlines that fly to Idaho from Washington, D.C. Reagan-National Airport according to our data. American Airlines is the first choice among our users, with 41% 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. Reagan-National to Idaho?

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

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

As of June 2026, there are 5 operators available to choose from for flights from Washington, D.C. Reagan-National Airport to Idaho.

How old do you have to be to fly from Washington, D.C. Reagan-National Airport 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 Washington, D.C. Reagan-National Airport 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 Washington, D.C. Reagan-National Airport to Idaho in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Washington, D.C. Reagan-National Airport to Idaho

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

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

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

6:05 am - 12:53 pm

DCA

GEG

9h 48m

1 stop

5:20 am - 3:34 pm

GEG

DCA

7h 14m

1 stop

$224Delta

Fri, Oct 2 - Tue, Oct 6

4:45 pm - 11:52 pm

DCA

GEG

10h 07m

1 stop

5:20 am - 3:32 pm

GEG

DCA

7h 12m

1 stop

$236Delta

Wed, Sep 16 - Sun, Sep 20

1:00 pm - 10:00 pm

DCA

BOI

11h 00m

2 stops

6:00 am - 4:40 pm

BOI

DCA

8h 40m

1 stop

$290Southwest

Sat, Aug 22 - Mon, Aug 24

1:00 pm - 9:25 pm

DCA

GEG

11h 25m

2 stops

6:00 am - 4:50 pm

GEG

DCA

7h 50m

1 stop

$294Southwest

Sat, Sep 12 - Mon, Sep 21

8:00 am - 2:40 pm

DCA

GEG

9h 40m

1 stop

7:16 am - 9:00 pm

GEG

DCA

10h 44m

1 stop

$322Alaska Airlines

Tue, Oct 27 - Wed, Oct 28

2:05 pm - 6:41 pm

DCA

JAC

6h 36m

1 stop

12:20 pm - 9:14 pm

JAC

DCA

6h 54m

1 stop

$341United Airlines

Fri, Oct 16 - Wed, Oct 21

2:05 pm - 6:41 pm

DCA

JAC

6h 36m

1 stop

8:40 am - 6:52 pm

JAC

DCA

8h 12m

1 stop

$355United Airlines

Fri, Oct 23 - Sun, Oct 25

8:00 am - 3:35 pm

DCA

IDA

9h 35m

1 stop

6:09 am - 4:25 pm

IDA

DCA

8h 16m

1 stop

$399Alaska Airlines

Tue, Oct 20 - Tue, Oct 27

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

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

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

Southwest

Aug 22

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

11h 00m

2 stops

BOI10:00 pmBoise Air Term. Gowen Fld

Aug 24

BOI6:00 amBoise Air Term. Gowen Fld

8h 40m

1 stop

DCA4:40 pmWashington, D.C. Reagan-National

$290

Southwest

Sep 12

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

11h 25m

2 stops

GEG9:25 pmSpokane

Sep 21

GEG6:00 amSpokane

7h 50m

1 stop

DCA4:50 pmWashington, D.C. Reagan-National

$294

Southwest

Aug 24

DCA9:10 amWashington, D.C. Reagan-National

7h 00m

1 stop

BOI2:10 pmBoise Air Term. Gowen Fld

Aug 26

BOI12:35 pmBoise Air Term. Gowen Fld

9h 20m

2 stops

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

$304

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

Our best Frontier deals on Washington, D.C. Reagan-National Airport 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

momondo Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Idaho that are best for you.

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

7:40 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

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

Washington, D.C.Spokane

DCA - GEG

DCAGEG

Washington, D.C. Reagan-National

Fri 10/2

6:05 am-12:53 pm

1 stop9h 48m

Spokane

Tue 10/6

5:20 am-3:34 pm

1 stop7h 14m

$224

Washington, D.C.Spokane

DCA - GEG

DCAGEG

Washington, D.C. Reagan-National

Wed 9/16

4:45 pm-11:52 pm

1 stop10h 07m

Spokane

Sun 9/20

5:20 am-3:32 pm

1 stop7h 12m

$236

Washington, D.C.Boise

DCA - BOI

DCABOI

Washington, D.C. Reagan-National

Sat 8/22

1:00 pm-10:00 pm

2 stops11h 00m

Boise Air Term. Gowen Fld

Mon 8/24

6:00 am-4:40 pm

1 stop8h 40m

$290

Washington, D.C.Spokane

DCA - GEG

DCAGEG

Washington, D.C. Reagan-National

Sat 9/12

1:00 pm-9:25 pm

2 stops11h 25m

Spokane

Mon 9/21

6:00 am-4:50 pm

1 stop7h 50m

$294

Washington, D.C.Spokane

DCA - GEG

DCAGEG

Washington, D.C. Reagan-National

Tue 10/27

8:00 am-2:40 pm

1 stop9h 40m

Spokane

Wed 10/28

7:16 am-9:00 pm

1 stop10h 44m

$322

Quickest round-trip

Washington, D.C.Jackson

DCA - JAC

DCAJAC

Washington, D.C. Reagan-National

Fri 10/16

2:05 pm-6:41 pm

1 stop6h 36m

Jackson Hole

Wed 10/21

12:20 pm-9:14 pm

1 stop6h 54m

$341

Washington, D.C.Jackson

DCA - JAC

DCAJAC

Washington, D.C. Reagan-National

Fri 10/23

2:05 pm-6:41 pm

1 stop6h 36m

Jackson Hole

Sun 10/25

8:40 am-6:52 pm

1 stop8h 12m

$355

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Tue 10/20

8:00 am-3:35 pm

1 stop9h 35m

Idaho Falls Fanning Field

Tue 10/27

6:09 am-4:25 pm

1 stop8h 16m

$399

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. Reagan-National Airport 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, February is the cheapest month to fly from Washington, D.C. Reagan-National Airport to Idaho. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $0. If you don’t want to visit Idaho in February, then you should wait until July to fly from Washington, D.C. Reagan-National Airport, when ticket prices are also cheap, with an average price of $125.

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

You could potentially save up to 35% on your flight if you consider stops on a Washington, D.C. Reagan-National Airport to Idaho flight.

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

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

Fastest flight time	6h 20m
Direct flights	None

The fastest flight from Washington, D.C. Reagan-National Airport to Idaho takes 6h 20m

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

Search flight deals

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

When did momondo last update prices for flights from Washington, D.C. Reagan-National Airport to Idaho?
Prices for flights from Washington, D.C. Reagan-National Airport to Idaho refresh daily.
How many operators does momondo search for flights from Washington, D.C. Reagan-National Airport to Idaho?
As of June 2026, there are 5 operators available to choose from for flights from Washington, D.C. Reagan-National Airport to Idaho.
How old do you have to be to fly from Washington, D.C. Reagan-National Airport 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 Washington, D.C. Reagan-National Airport 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 Washington, D.C. Reagan-National Airport to Idaho

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

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $150	Free Cancellation	Rating 7.8 8,408 reviews	Search Delta flights
United Airlines	PriceFrom $221	Free Cancellation	Rating 7.4 9,844 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 11,670 reviews	Search American Airlines flights
Alaska Airlines	PriceFrom $388	Free Cancellation	Rating 7.9 12,521 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. momondo allows you to filter the results for Washington, D.C. to Idaho flights to just show those with flexible booking policies.

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?

Price alerts on flights to Idaho from Washington, D.C. are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Idaho trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Start using Trips

Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

1 adult

Thu 7/16

Thu 7/23

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Idaho

Popular cities

Other flights from Washington, D.C. Reagan-National Airport

Other flights to Idaho

Airlines

Complete your trip

Feeling lucky

Popular cities in Idaho

Flights to New Yorkfrom $73

Flights to Los Angelesfrom $69

Flights to Orlandofrom $59

Flights to Miamifrom $76

Flights to Chicagofrom $77

Flights to San Franciscofrom $56

Flights to Las Vegasfrom $50

Flights to Washington, D.C.from $56

Flights to Bostonfrom $62

Flights to Atlantafrom $56

Flights to Fort Lauderdalefrom $55

Flights to Dallasfrom $73

Cheap flights from Washington, D.C. Reagan-National Airport to Idaho from $99

Find the cheapest flights from Washington, D.C. Reagan-National Airport to Idaho

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

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

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

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

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

momondo Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Idaho that are best for you.

See travel insights to Idaho from

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

What is the cheapest month to fly to Idaho?

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

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

What airlines fly to Idaho?

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

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

Fastest flight time

Direct flights

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

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

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

Why use momondo?

An easier way to manage your Idaho trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Idaho

Popular cities in Idaho

Popular flights according to clicks in the last 7 days on momondo

Washington, D.C. Reagan-National Airport flight routes

According to popular flight searches on momondo this year

Idaho flight routes

According to popular flight searches on momondo this year

Fly your favorite airline to Idaho

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Complete your trip to Idaho

Explore popular destinations other users love

According to popular flight searches on momondo this year