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

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

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 47% of people opting to fly with this airline when traveling to Idaho. Keep in mind that there are 4 different airlines that fly to Idaho on a routine basis, so you have a few additional options to choose from.

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

As of August 2026, there are 4 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.

$152 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.

6:50 pm - 11:55 pmDCA Washington, D.C. Reagan-National-BOI Boise Air Term. Gowen Fld

7h 05m1 stop Minneapolis St Paul

5:40 am - 1:58 pmBOI Boise Air Term. Gowen Fld-DCA Washington, D.C. Reagan-National

6h 18m1 stop Minneapolis St Paul

$303Delta

Sat, Feb 13 - Wed, Feb 17

4:50 pm - 11:52 pmDCA Washington, D.C. Reagan-National-BOI Boise Air Term. Gowen Fld

9h 02m1 stop Seattle/Tacoma Intl

3:22 pm - 11:29 pmBOI Boise Air Term. Gowen Fld-DCA Washington, D.C. Reagan-National

6h 07m1 stop Minneapolis St Paul

$303Delta

Tue, Dec 29 - Tue, Jan 5

5:00 am - 11:24 amDCA Washington, D.C. Reagan-National-BOI Boise Air Term. Gowen Fld

8h 24m1 stop Dallas/Fort Worth

12:14 pm - 11:00 pmBOI Boise Air Term. Gowen Fld-DCA Washington, D.C. Reagan-National

8h 46m1 stop Dallas/Fort Worth

$303American Airlines

Sat, Oct 24 - Sat, Oct 31

5:00 am - 1:51 pmDCA Washington, D.C. Reagan-National-BOI Boise Air Term. Gowen Fld

10h 51m1 stop Dallas/Fort Worth

12:19 pm - 11:59 pmBOI Boise Air Term. Gowen Fld-DCA Washington, D.C. Reagan-National

9h 40m1 stop Dallas/Fort Worth

$303American Airlines

Thu, Dec 3 - Mon, Dec 7

6:25 am - 11:31 amDCA Washington, D.C. Reagan-National-BOI Boise Air Term. Gowen Fld

7h 06m1 stop Chicago O'Hare Intl

12:31 pm - 10:43 pmBOI Boise Air Term. Gowen Fld-DCA Washington, D.C. Reagan-National

8h 12m1 stop Chicago O'Hare Intl

$327United Airlines

Thu, Nov 19 - Sun, Nov 22

6:25 am - 11:31 amDCA Washington, D.C. Reagan-National-BOI Boise Air Term. Gowen Fld

7h 06m1 stop Chicago O'Hare Intl

12:31 pm - 10:43 pmBOI Boise Air Term. Gowen Fld-DCA Washington, D.C. Reagan-National

8h 12m1 stop Chicago O'Hare Intl

$327United Airlines

Thu, Nov 19 - Sun, Nov 22

5:05 pm - 10:35 pmDCA Washington, D.C. Reagan-National-GEG Spokane

8h 30m1 stop Portland

5:03 am - 4:00 pmGEG Spokane-DCA Washington, D.C. Reagan-National

7h 57m1 stop Portland

$337Alaska Airlines

Sat, Jan 30 - Wed, Feb 10

5:27 pm - 11:11 pmDCA Washington, D.C. Reagan-National-GEG Spokane

8h 44m1 stop Portland

6:00 am - 9:00 pmGEG Spokane-DCA Washington, D.C. Reagan-National

12h 00m1 stop San Diego

$337Alaska Airlines

Tue, Sep 22 - Tue, Sep 29

6:00 am - 7:50 pmDCA Washington, D.C. Reagan-National-BOI Boise Air Term. Gowen Fld

15h 50m2 stops Houston Hobby San Diego

12:35 pm - 11:55 pmBOI Boise Air Term. Gowen Fld-DCA Washington, D.C. Reagan-National

9h 20m2 stops Denver Intl Nashville Intl

$367Southwest

Tue, Sep 15 - Tue, Sep 22

6:00 am - 7:50 pmDCA Washington, D.C. Reagan-National-BOI Boise Air Term. Gowen Fld

15h 50m2 stops Houston Hobby San Diego

7:45 am - 8:55 pmBOI Boise Air Term. Gowen Fld-DCA Washington, D.C. Reagan-National

11h 10m1 stop Las Vegas Harry Reid Intl

$387Southwest

Tue, Sep 22 - Sat, Sep 26

Cheap last minute flights

Enter your travel dates to find the best prices.

5:20 pm - 11:55 pmDCA Washington, D.C. Reagan-National-BOI Boise Air Term. Gowen Fld

8h 35m1 stop Portland

1:24 pm - 9:59 pmBOI Boise Air Term. Gowen Fld-DCA Washington, D.C. Reagan-National

6h 35m1 stop Denver Intl

$334Multiple Airlines

Sun, Aug 30 - Tue, Sep 1

7:00 am - 12:29 pmDCA Washington, D.C. Reagan-National-BOI Boise Air Term. Gowen Fld

7h 29m1 stop Denver Intl

7:05 am - 8:00 pmBOI Boise Air Term. Gowen Fld-DCA Washington, D.C. Reagan-National

10h 55m1 stop Los Angeles Los Angeles

$334Multiple Airlines

Tue, Sep 1 - Wed, Sep 2

3:30 pm - 10:53 pmDCA Washington, D.C. Reagan-National-BOI Boise Air Term. Gowen Fld

9h 23m1 stop Chicago O'Hare Intl

6:15 am - 4:43 pmBOI Boise Air Term. Gowen Fld-DCA Washington, D.C. Reagan-National

8h 28m1 stop San Francisco

$358United Airlines

Tue, Sep 1 - Wed, Sep 2

7:29 am - 1:24 pmDCA Washington, D.C. Reagan-National-BOI Boise Air Term. Gowen Fld

7h 55m1 stop Phoenix Sky Harbor Intl

12:12 pm - 11:58 pmBOI Boise Air Term. Gowen Fld-DCA Washington, D.C. Reagan-National

9h 46m1 stop Dallas/Fort Worth

$363American Airlines

Tue, Sep 1 - Wed, Sep 2

3:12 pm - 10:11 pmDCA Washington, D.C. Reagan-National-BOI Boise Air Term. Gowen Fld

8h 59m1 stop Dallas/Fort Worth

8:01 am - 8:46 pmBOI Boise Air Term. Gowen Fld-DCA Washington, D.C. Reagan-National

10h 45m1 stop Phoenix Sky Harbor Intl

$363American Airlines

Sun, Aug 30 - Tue, Sep 1

3:00 pm - 7:24 pmDCA Washington, D.C. Reagan-National-GEG Spokane

7h 24m1 stop Minneapolis St Paul

5:30 am - 4:44 pmGEG Spokane-DCA Washington, D.C. Reagan-National

8h 14m1 stop Salt Lake City

$385Delta

Sat, Aug 29 - Sat, Sep 5

4:35 pm - 9:35 pmDCA Washington, D.C. Reagan-National-GEG Spokane

8h 00m1 stop Seattle/Tacoma Intl

5:15 am - 3:21 pmGEG Spokane-DCA Washington, D.C. Reagan-National

7h 06m1 stop Seattle/Tacoma Intl

$476Delta

Sat, Aug 29 - Sun, Sep 6

6:30 am - 11:39 amDCA Washington, D.C. Reagan-National-GEG Spokane

8h 09m1 stop Chicago O'Hare Intl

5:00 am - 3:03 pmGEG Spokane-DCA Washington, D.C. Reagan-National

7h 03m1 stop Denver Intl

$564United Airlines

Mon, Aug 31 - Sun, Sep 6

8:00 am - 2:47 pmDCA Washington, D.C. Reagan-National-GEG Spokane

9h 47m1 stop Seattle/Tacoma Intl

5:52 am - 4:20 pmGEG Spokane-DCA Washington, D.C. Reagan-National

7h 28m1 stop Seattle/Tacoma Intl

$648Alaska Airlines

Sat, Aug 29 - Mon, Sep 7

8:00 am - 11:15 amDCA Washington, D.C. Reagan-National-JAC Jackson Hole

29h 15m1 stop Seattle/Tacoma Intl

2:10 pm - 4:00 pmJAC Jackson Hole-DCA Washington, D.C. Reagan-National

23h 50m1 stop Portland

$829Alaska Airlines

Sat, Aug 29 - Wed, Sep 2

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

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

Delta

Oct 21

DCA6:59 pmWashington, D.C. Reagan-National

7h 00m

1 stop

BOI11:59 pmBoise Air Term. Gowen Fld

Oct 27

BOI1:40 pmBoise Air Term. Gowen Fld

7h 09m

1 stop

DCA10:49 pmWashington, D.C. Reagan-National

$303

Delta

Sep 8

DCA5:59 pmWashington, D.C. Reagan-National

7h 59m

1 stop

BOI11:58 pmBoise Air Term. Gowen Fld

Sep 9

BOI2:11 pmBoise Air Term. Gowen Fld

7h 33m

1 stop

DCA11:44 pmWashington, D.C. Reagan-National

$333

Delta

Sep 15

DCA4:45 pmWashington, D.C. Reagan-National

7h 30m

1 stop

GEG9:15 pmSpokane

Sep 22

GEG2:05 pmSpokane

6h 54m

1 stop

DCA11:59 pmWashington, D.C. Reagan-National

$337

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

Sep 15

DCA6:00 amWashington, D.C. Reagan-National

15h 50m

2 stops

BOI7:50 pmBoise Air Term. Gowen Fld

Sep 22

BOI12:35 pmBoise Air Term. Gowen Fld

9h 20m

2 stops

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

$367

Southwest

Aug 30

DCA5:35 pmWashington, D.C. Reagan-National

9h 00m

1 stop

BOI12:35 amBoise Air Term. Gowen Fld

Sep 1

BOI6:00 amBoise Air Term. Gowen Fld

10h 00m

2 stops

DCA6:00 pmWashington, D.C. Reagan-National

$368

Southwest

Oct 27

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

8h 40m

1 stop

GEG10:20 pmSpokane

Nov 11

GEG6:40 amSpokane

8h 20m

2 stops

DCA6:00 pmWashington, D.C. Reagan-National

$377

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

Quickest round-trip

Washington, D.C.Boise

DCA Washington, D.C. Reagan-National - BOI Boise Air Term. Gowen Fld

DCABOI

Washington, D.C. Reagan-National

Sat 2/13

6:50 pm-11:55 pm

1 stop7h 05m

Boise Air Term. Gowen Fld

Wed 2/17

5:40 am-1:58 pm

1 stop6h 18m

$303

Washington, D.C.Boise

DCA Washington, D.C. Reagan-National - BOI Boise Air Term. Gowen Fld

DCABOI

Washington, D.C. Reagan-National

Tue 12/29

4:50 pm-11:52 pm

1 stop9h 02m

Boise Air Term. Gowen Fld

Tue 1/5

3:22 pm-11:29 pm

1 stop6h 07m

$303

Washington, D.C.Boise

DCA Washington, D.C. Reagan-National - BOI Boise Air Term. Gowen Fld

DCABOI

Washington, D.C. Reagan-National

Sat 10/24

5:00 am-11:24 am

1 stop8h 24m

Boise Air Term. Gowen Fld

Sat 10/31

12:14 pm-11:00 pm

1 stop8h 46m

$303

Washington, D.C.Boise

DCA Washington, D.C. Reagan-National - BOI Boise Air Term. Gowen Fld

DCABOI

Washington, D.C. Reagan-National

Thu 12/3

5:00 am-1:51 pm

1 stop10h 51m

Boise Air Term. Gowen Fld

Mon 12/7

12:19 pm-11:59 pm

1 stop9h 40m

$303

Washington, D.C.Boise

DCA Washington, D.C. Reagan-National - BOI Boise Air Term. Gowen Fld

DCABOI

Washington, D.C. Reagan-National

Thu 11/19

6:25 am-11:31 am

1 stop7h 06m

Boise Air Term. Gowen Fld

Sun 11/22

12:31 pm-10:43 pm

1 stop8h 12m

$327

Washington, D.C.Boise

DCA Washington, D.C. Reagan-National - BOI Boise Air Term. Gowen Fld

DCABOI

Washington, D.C. Reagan-National

Thu 11/19

6:25 am-11:31 am

1 stop7h 06m

Boise Air Term. Gowen Fld

Sun 11/22

12:31 pm-10:43 pm

1 stop8h 12m

$327

Washington, D.C.Spokane

DCA Washington, D.C. Reagan-National - GEG Spokane

DCAGEG

Washington, D.C. Reagan-National

Sat 1/30

5:05 pm-10:35 pm

1 stop8h 30m

Spokane

Wed 2/10

5:03 am-4:00 pm

1 stop7h 57m

$337

Washington, D.C.Spokane

DCA Washington, D.C. Reagan-National - GEG Spokane

DCAGEG

Washington, D.C. Reagan-National

Tue 9/22

5:27 pm-11:11 pm

1 stop8h 44m

Spokane

Tue 9/29

6:00 am-9:00 pm

1 stop12h 00m

$337

Washington, D.C.Boise

DCA Washington, D.C. Reagan-National - BOI Boise Air Term. Gowen Fld

DCABOI

Washington, D.C. Reagan-National

Tue 9/15

6:00 am-7:50 pm

2 stops15h 50m

Boise Air Term. Gowen Fld

Tue 9/22

12:35 pm-11:55 pm

2 stops9h 20m

$367

Washington, D.C.Boise

DCA Washington, D.C. Reagan-National - BOI Boise Air Term. Gowen Fld

DCABOI

Washington, D.C. Reagan-National

Tue 9/22

6:00 am-7:50 pm

2 stops15h 50m

Boise Air Term. Gowen Fld

Sat 9/26

7:45 am-8:55 pm

1 stop11h 10m

$387

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 January to fly from Washington, D.C. Reagan-National Airport, when ticket prices are also cheap, with an average price of $330.

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

You could potentially save up to 44% 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

Best Price Found	$152
Fastest flight time	6h 20m
Direct flights	None

The best one-way flight to Idaho from Washington, D.C. Reagan-National Airport in the past 72 hours is $152. The best round-trip flight deal from Washington, D.C. Reagan-National Airport to Idaho found on momondo in the last 72 hours is $303.

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 August 2026, there are 4 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
United Airlines	PriceFrom $222	Free Cancellation	Rating 7.4 10,128 reviews	Search United Airlines flights
Delta	PriceFrom $262	Free Cancellation	Rating 7.8 8,531 reviews	Search Delta flights
American Airlines	PriceFrom $262	Free Cancellation	Rating 7.1 12,004 reviews	Search American Airlines flights
Alaska Airlines	PriceFrom $388	Free Cancellation	Rating 7.9 12,845 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.