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

Alaska Airlines, Hawaiian Airlines, and Delta 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 Baltimore 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 Washington, D.C. to Boise, which will take roughly 7h 26m. Keep in mind that layovers or delays could extend your travel time.

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 46% of people opting to fly with this airline when traveling to Idaho. Keep in mind that there are 6 different airlines that fly to Idaho on a routine basis, so you have a few additional options to choose from.

How many flights depart from Washington, D.C. to Idaho on average per week?

As of April 2025, 2 flights take off from Washington, D.C. and land in Idaho each week. The most common flight departure day for this route is Wed, with 50% of weekly flights taking off on this day.

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 6 as of April 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.

$135 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

Cheap round-trip flights

KAYAK's recommended round-trip deals from the most popular airlines that fly from Washington, D.C. to Idaho.

6:51 am - 12:57 pmBWI-BOI

8h 06m1 stop

12:16 pm - 6:10 amBOI-BWI

15h 54m1 stop

$253Spirit Airlines

Find Deal

Fri, May 2 - Fri, May 9

6:51 am - 12:57 pmBWI-BOI

8h 06m1 stop

1:52 pm - 5:46 amBOI-BWI

13h 54m1 stop

$254Spirit Airlines

Find Deal

Mon, Apr 21 - Wed, Apr 23

7:20 pm - 11:03 pmBWI-GEG

6h 43m1 stop

11:55 am - 11:45 pmGEG-BWI

8h 50m1 stop

$297Delta

Find Deal

Tue, Jul 8 - Tue, Jul 22

4:40 pm - 12:18 amDCA-GEG

10h 38m1 stop

5:05 am - 3:35 pmGEG-DCA

7h 30m1 stop

$297Delta

Find Deal

Thu, Sep 11 - Tue, Sep 23

3:39 pm - 9:59 pmIAD-GEG

9h 20m1 stop

6:25 pm - 5:24 amGEG-IAD

7h 59m1 stop

$297United Airlines

Find Deal

Sat, Aug 9 - Sat, Aug 16

7:00 am - 2:47 pmDCA-GEG

10h 47m1 stop

7:00 am - 6:02 pmGEG-DCA

8h 02m1 stop

$313United Airlines

Find Deal

Tue, Jul 8 - Tue, Jul 22

5:00 am - 10:54 amDCA-BOI

7h 54m1 stop

3:35 pm - 12:49 amBOI-DCA

7h 14m1 stop

$330American Airlines

Find Deal

Wed, Jul 9 - Sat, Jul 19

1:32 pm - 8:33 pmBWI-GEG

10h 01m1 stop

1:40 pm - 11:25 pmGEG-BWI

6h 45m1 stop

$332American Airlines

Find Deal

Wed, Sep 24 - Mon, Oct 6

5:50 pm - 11:05 pmBWI-GEG

8h 15m1 stop

5:15 pm - 5:05 amGEG-BWI

8h 50m1 stop

$343Southwest

Find Deal

Wed, Jul 16 - Wed, Jul 23

8:00 am - 3:50 pmBWI-BOI

9h 50m1 stop

6:05 pm - 5:00 amBOI-BWI

8h 55m2 stops

$346Southwest

Find Deal

Thu, Sep 25 - Tue, Sep 30

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

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

Spirit Airlines

May 2

BWI6:51 amBaltimore/Washington

8h 06m

1 stop

BOI12:57 pmBoise Air Term. Gowen Fld

May 9

BOI12:16 pmBoise Air Term. Gowen Fld

15h 54m

1 stop

BWI6:10 amBaltimore/Washington

$253

Find similar

Spirit Airlines

Apr 21

BWI6:51 amBaltimore/Washington

8h 06m

1 stop

BOI12:57 pmBoise Air Term. Gowen Fld

Apr 23

BOI1:52 pmBoise Air Term. Gowen Fld

13h 54m

1 stop

BWI5:46 amBaltimore/Washington

$254

Find similar

Spirit Airlines

Apr 28

BWI6:51 amBaltimore/Washington

8h 06m

1 stop

BOI12:57 pmBoise Air Term. Gowen Fld

Apr 30

BOI1:52 pmBoise Air Term. Gowen Fld

13h 54m

1 stop

BWI5:46 amBaltimore/Washington

$256

Find similar

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

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

American Airlines

Jul 9

DCA5:00 amWashington, D.C. Reagan-National

7h 54m

1 stop

BOI10:54 amBoise Air Term. Gowen Fld

Jul 19

BOI3:35 pmBoise Air Term. Gowen Fld

7h 14m

1 stop

DCA12:49 amWashington, D.C. Reagan-National

$330

Find similar

American Airlines

Sep 24

BWI1:32 pmBaltimore/Washington

10h 01m

1 stop

GEG8:33 pmSpokane

Oct 6

GEG1:40 pmSpokane

6h 45m

1 stop

BWI11:25 pmBaltimore/Washington

$332

Find similar

American Airlines

Sep 25

BWI6:00 amBaltimore/Washington

8h 36m

1 stop

BOI12:36 pmBoise Air Term. Gowen Fld

Sep 30

BOI1:17 pmBoise Air Term. Gowen Fld

7h 00m

1 stop

BWI10:17 pmBaltimore/Washington

$335

Find similar

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, February 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 $346. If you don’t want to visit Idaho in February, then you should wait until August to fly from Washington, D.C., when ticket prices are also cheap, with an average price of $411.

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 9 weeks ahead of your departure date. In general, you can expect to find flights to Idaho for around $487 when searching 9 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 $329 on momondo.

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	$135
Fastest flight time	6h 05m
Direct flights	None
Airports in Idaho	4 airports

The best one-way flight to Idaho from Washington, D.C. in the past 72 hours is $135. The best round-trip flight deal from Washington, D.C. to Idaho found on momondo in the last 72 hours is $253.

The fastest flight from Washington, D.C. to Idaho takes 6h 05m

There are no direct flights from Washington, D.C. to Idaho. Popular non-direct routes for this connection are Baltimore/Washington Airport - Spokane Airport, Washington, D.C. Reagan-National Airport - Spokane Airport and Washington, D.C. Dulles Intl Airport - Spokane Airport.

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

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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 6 as of April 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
Spirit Airlines	PriceFrom $180	Free Cancellation	Rating 6.3 7,889 reviews	Search Spirit Airlines flights
Alaska Airlines	PriceFrom $230	Free Cancellation	Rating 8.0 9,827 reviews	Search Alaska Airlines flights
Delta	PriceFrom $230	Free Cancellation	Rating 8.0 7,897 reviews	Search Delta flights
Southwest	PriceFrom $274	Free Cancellation	Rating 8.0 4,274 reviews	Search Southwest flights
United Airlines	PriceFrom $298	Free Cancellation	Rating 7.4 8,616 reviews	Search United Airlines flights
American Airlines	PriceFrom $334	Free Cancellation	Rating 7.2 10,000 reviews	Search American 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. 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.