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 48% 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, American Airlines, and Southwest 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 Washington, D.C. and flying into Boise (one of the most popular routes), then the duration is 6h 42m on average. Another popular route from Washington, D.C. to Idaho is flying from Baltimore to Boise, which will take roughly 6h 50m. Keep in mind that layovers or delays could extend your travel time.

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 September 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.

$100 Cheap Flights from Washington, D.C. to Idaho in 2026/27

Discover deals from 900+ travel sites with momondo.

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

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:00 am - 1:55 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld

9h 55m1 stop Las Vegas Harry Reid Intl

2:50 pm - 6:20 amBOI Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl

13h 30m1 stop Las Vegas Harry Reid Intl

$176Frontier

Thu, Oct 15 - Mon, Oct 19

7:18 am - 12:37 pmBWI Baltimore/Washington-BOI Boise Air Term. Gowen Fld

7h 19m1 stop Chicago O'Hare Intl

1:24 pm - 11:55 pmBOI Boise Air Term. Gowen Fld-BWI Baltimore/Washington

8h 31m1 stop Chicago O'Hare Intl

$201American Airlines

Wed, Nov 11 - Wed, Nov 18

8:08 am - 1:39 pmBWI Baltimore/Washington-BOI Boise Air Term. Gowen Fld

7h 31m1 stop Atlanta Hartsfield-Jackson

6:45 pm - 5:40 amBOI Boise Air Term. Gowen Fld-BWI Baltimore/Washington

8h 55m1 stop Salt Lake City

$201Delta

Wed, Nov 11 - Wed, Nov 18

7:20 am - 12:35 pmBWI Baltimore/Washington-BOI Boise Air Term. Gowen Fld

7h 15m1 stop Minneapolis St Paul

3:00 pm - 11:23 pmBOI Boise Air Term. Gowen Fld-BWI Baltimore/Washington

6h 23m1 stop Minneapolis St Paul

$201Delta

Sat, Oct 24 - Sat, Oct 31

5:20 pm - 10:35 pmBWI Baltimore/Washington-BOI Boise Air Term. Gowen Fld

7h 15m1 stop Denver Intl

3:30 pm - 12:50 amBOI Boise Air Term. Gowen Fld-BWI Baltimore/Washington

7h 20m1 stop Denver Intl

$201Southwest

Wed, Nov 11 - Wed, Nov 18

7:17 am - 2:33 pmBWI Baltimore/Washington-BOI Boise Air Term. Gowen Fld

9h 16m1 stop Chicago O'Hare Intl

1:24 pm - 11:55 pmBOI Boise Air Term. Gowen Fld-BWI Baltimore/Washington

8h 31m1 stop Chicago O'Hare Intl

$201American Airlines

Sat, Oct 31 - Tue, Nov 3

12:55 pm - 8:55 pmBWI Baltimore/Washington-BOI Boise Air Term. Gowen Fld

10h 00m1 stop Sacramento Intl

11:35 am - 8:50 pmBOI Boise Air Term. Gowen Fld-BWI Baltimore/Washington

7h 15m1 stop Las Vegas Harry Reid Intl

$202Southwest

Sat, Oct 24 - Sat, Oct 31

10:59 am - 7:08 pmDCA Washington, D.C. Reagan-National-GEG Spokane

11h 09m1 stop San Diego

6:16 pm - 5:59 pmGEG Spokane-DCA Washington, D.C. Reagan-National

20h 43m1 stop San Francisco

$221Alaska Airlines

Wed, Dec 9 - Wed, Jan 6

6:20 pm - 11:57 pmBWI Baltimore/Washington-GEG Spokane

8h 37m1 stop Seattle/Tacoma Intl

6:10 am - 5:17 pmGEG Spokane-BWI Baltimore/Washington

8h 07m1 stop Seattle/Tacoma Intl

$223Alaska Airlines

Wed, Jan 13 - Wed, Jan 20

10:01 am - 1:34 pmIAD Washington, D.C. Dulles Intl-IDA Idaho Falls Fanning Field

29h 33m2 stops Knoxville McGhee Tyson Las Vegas Harry Reid Intl

7:30 pm - 6:20 amIDA Idaho Falls Fanning Field-IAD Washington, D.C. Dulles Intl

8h 50m1 stop Las Vegas Harry Reid Intl

$401Multiple Airlines

Thu, Oct 22 - Mon, Oct 26

Cheap last minute flights

Enter your travel dates to find the best prices.

6:00 am - 1:01 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld

9h 01m1 stop Atlanta Hartsfield-Jackson

12:13 pm - 12:20 amBOI Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl

10h 07m1 stop Seattle/Tacoma Intl

$349Delta

Sat, Sep 19 - Thu, Nov 12

7:25 am - 3:16 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld

9h 51m1 stop Seattle/Tacoma Intl

11:10 pm - 10:03 amBOI Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl

8h 53m1 stop Atlanta Hartsfield-Jackson

$383Delta

Wed, Sep 23 - Fri, Sep 25

6:15 am - 11:26 amIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld

7h 11m1 stop Chicago O'Hare Intl

2:51 pm - 1:13 amBOI Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl

8h 22m1 stop San Francisco

$383United Airlines

Wed, Sep 23 - Thu, Sep 24

6:15 am - 11:26 amIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld

7h 11m1 stop Chicago O'Hare Intl

6:32 am - 4:18 pmBOI Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl

7h 46m1 stop San Francisco

$383United Airlines

Sat, Sep 19 - Thu, Sep 24

3:22 pm - 10:27 pmDCA Washington, D.C. Reagan-National-BOI Boise Air Term. Gowen Fld

9h 05m1 stop Dallas/Fort Worth

3:21 pm - 11:59 pmBOI Boise Air Term. Gowen Fld-DCA Washington, D.C. Reagan-National

6h 38m1 stop Chicago O'Hare Intl

$383American Airlines

Wed, Sep 23 - Thu, Sep 24

3:22 pm - 10:27 pmDCA Washington, D.C. Reagan-National-BOI Boise Air Term. Gowen Fld

9h 05m1 stop Dallas/Fort Worth

3:21 pm - 11:59 pmBOI Boise Air Term. Gowen Fld-DCA Washington, D.C. Reagan-National

6h 38m1 stop Chicago O'Hare Intl

$383American Airlines

Wed, Sep 23 - Fri, Sep 25

7:00 am - 12:39 pmIAD Washington, D.C. Dulles Intl-GEG Spokane

8h 39m1 stop Seattle/Tacoma Intl

5:21 pm - 5:40 amGEG Spokane-IAD Washington, D.C. Dulles Intl

9h 19m1 stop Seattle/Tacoma Intl

$405Alaska Airlines

Tue, Sep 22 - Mon, Sep 28

7:00 am - 12:39 pmIAD Washington, D.C. Dulles Intl-GEG Spokane

8h 39m1 stop Seattle/Tacoma Intl

12:17 pm - 11:59 pmGEG Spokane-IAD Washington, D.C. Dulles Intl

8h 42m1 stop Seattle/Tacoma Intl

$405Alaska Airlines

Wed, Sep 23 - Sat, Sep 26

6:00 am - 1:55 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld

9h 55m1 stop Las Vegas Harry Reid Intl

1:15 pm - 11:59 pmBOI Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl

8h 44m1 stop Seattle/Tacoma Intl

$467Multiple Airlines

Mon, Sep 21 - Mon, Sep 28

6:00 am - 1:55 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld

9h 55m1 stop Las Vegas Harry Reid Intl

2:50 pm - 6:20 amBOI Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl

13h 30m1 stop Las Vegas Harry Reid Intl

$490Frontier

Sun, Sep 20 - Thu, Sep 24

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Southwest flights from Washington, D.C. to Idaho

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

Southwest

Oct 24

BWI12:55 pmBaltimore/Washington

10h 00m

1 stop

BOI8:55 pmBoise Air Term. Gowen Fld

Oct 31

BOI11:35 amBoise Air Term. Gowen Fld

7h 15m

1 stop

BWI8:50 pmBaltimore/Washington

$202

Southwest

Oct 6

BWI3:05 pmBaltimore/Washington

10h 10m

2 stops

BOI11:15 pmBoise Air Term. Gowen Fld

Oct 13

BOI2:25 pmBoise Air Term. Gowen Fld

7h 55m

1 stop

BWI12:20 amBaltimore/Washington

$207

Southwest

Oct 31

BWI8:15 amBaltimore/Washington

11h 55m

1 stop

BOI6:10 pmBoise Air Term. Gowen Fld

Nov 7

BOI11:30 amBoise Air Term. Gowen Fld

9h 30m

1 stop

BWI11:00 pmBaltimore/Washington

$208

Frontier flights from Washington, D.C. to Idaho

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

Frontier

Oct 15

IAD6:00 amWashington, D.C. Dulles Intl

9h 55m

1 stop

BOI1:55 pmBoise Air Term. Gowen Fld

Oct 19

BOI2:50 pmBoise Air Term. Gowen Fld

13h 30m

1 stop

IAD6:20 amWashington, D.C. Dulles Intl

$176

Frontier

Oct 12

IAD6:00 amWashington, D.C. Dulles Intl

9h 55m

1 stop

BOI1:55 pmBoise Air Term. Gowen Fld

Oct 16

BOI2:50 pmBoise Air Term. Gowen Fld

13h 30m

1 stop

IAD6:20 amWashington, D.C. Dulles Intl

$331

Frontier

Oct 15

IAD6:00 amWashington, D.C. Dulles Intl

9h 55m

1 stop

BOI1:55 pmBoise Air Term. Gowen Fld

Oct 16

BOI2:50 pmBoise Air Term. Gowen Fld

13h 30m

1 stop

IAD6:20 amWashington, D.C. Dulles Intl

$332

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Boise

IAD Washington, D.C. Dulles Intl - BOI Boise Air Term. Gowen Fld

IADBOI

Washington, D.C. Dulles Intl

Thu 10/15

6:00 am-1:55 pm

1 stop9h 55m

Boise Air Term. Gowen Fld

Mon 10/19

2:50 pm-6:20 am

1 stop13h 30m

$176

BaltimoreBoise

BWI Baltimore/Washington - BOI Boise Air Term. Gowen Fld

BWIBOI

Baltimore/Washington

Wed 11/11

7:18 am-12:37 pm

1 stop7h 19m

Boise Air Term. Gowen Fld

Wed 11/18

1:24 pm-11:55 pm

1 stop8h 31m

$201

BaltimoreBoise

BWI Baltimore/Washington - BOI Boise Air Term. Gowen Fld

BWIBOI

Baltimore/Washington

Wed 11/11

8:08 am-1:39 pm

1 stop7h 31m

Boise Air Term. Gowen Fld

Wed 11/18

6:45 pm-5:40 am

1 stop8h 55m

$201

Quickest round-trip

BaltimoreBoise

BWI Baltimore/Washington - BOI Boise Air Term. Gowen Fld

BWIBOI

Baltimore/Washington

Sat 10/24

7:20 am-12:35 pm

1 stop7h 15m

Boise Air Term. Gowen Fld

Sat 10/31

3:00 pm-11:23 pm

1 stop6h 23m

$201

BaltimoreBoise

BWI Baltimore/Washington - BOI Boise Air Term. Gowen Fld

BWIBOI

Baltimore/Washington

Wed 11/11

5:20 pm-10:35 pm

1 stop7h 15m

Boise Air Term. Gowen Fld

Wed 11/18

3:30 pm-12:50 am

1 stop7h 20m

$201

BaltimoreBoise

BWI Baltimore/Washington - BOI Boise Air Term. Gowen Fld

BWIBOI

Baltimore/Washington

Sat 10/31

7:17 am-2:33 pm

1 stop9h 16m

Boise Air Term. Gowen Fld

Tue 11/3

1:24 pm-11:55 pm

1 stop8h 31m

$201

BaltimoreBoise

BWI Baltimore/Washington - BOI Boise Air Term. Gowen Fld

BWIBOI

Baltimore/Washington

Sat 10/24

12:55 pm-8:55 pm

1 stop10h 00m

Boise Air Term. Gowen Fld

Sat 10/31

11:35 am-8:50 pm

1 stop7h 15m

$202

Washington, D.C.Spokane

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

DCAGEG

Washington, D.C. Reagan-National

Wed 12/9

10:59 am-7:08 pm

1 stop11h 09m

Spokane

Wed 1/6

6:16 pm-5:59 pm

1 stop20h 43m

$221

BaltimoreSpokane

BWI Baltimore/Washington - GEG Spokane

BWIGEG

Baltimore/Washington

Wed 1/13

6:20 pm-11:57 pm

1 stop8h 37m

Spokane

Wed 1/20

6:10 am-5:17 pm

1 stop8h 07m

$223

Washington, D.C.Idaho Falls

IAD Washington, D.C. Dulles Intl - IDA Idaho Falls Fanning Field

IADIDA

Washington, D.C. Dulles Intl

Thu 10/22

10:01 am-1:34 pm

2 stops29h 33m

Idaho Falls Fanning Field

Mon 10/26

7:30 pm-6:20 am

1 stop8h 50m

$401

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, May 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 $389. If you don’t want to visit Idaho in May, then you should wait until October to fly from Washington, D.C., when ticket prices are also cheap, with an average price of $412.

What is the cheapest Washington, D.C. to Idaho flight route?

Fly from Washington, D.C. Dulles Intl to Idaho Falls Fanning Field for the best Washington, D.C. - Idaho flight prices

What cabin class options are available on Washington, D.C. to Idaho flights?

There is only 1 cabin class available to choose from on Washington, D.C. to Idaho flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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

You could potentially save up to 23% 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	$100
Fastest flight time	4h 40m
Direct flights	Sun
Airports in Idaho	27 airports

The best one-way flight to Idaho from Washington, D.C. in the past 72 hours is $100. The best round-trip flight deal from Washington, D.C. to Idaho found on momondo in the last 72 hours is $176.

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

Direct flights go from Washington, D.C. to Idaho on Sunday. There are no airlines offering direct flights.

There are 27 airports in Idaho. From Washington, D.C. there are direct flights to Jackson Hole (JAC).

Search flight deals

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 September 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.
What is the most popular plane model from Washington, D.C. to Idaho?
Based on momondo bookings for flights between Washington, D.C. and Idaho, the leading plane model is Airbus A321neo, making up 100.00% of the total bookings.

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
Alaska Airlines	PriceFrom $179	Free Cancellation	Rating 7.9 12,936 reviews	Search Alaska Airlines flights
Delta	PriceFrom $200	Free Cancellation	Rating 7.8 8,579 reviews	Search Delta flights
United Airlines	PriceFrom $222	Free Cancellation	Rating 7.4 10,213 reviews	Search United Airlines flights
American Airlines	PriceFrom $262	Free Cancellation	Rating 7.1 12,075 reviews	Search American Airlines flights
Southwest	PriceFrom $354	Free Cancellation	Rating 8.0 4,188 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.