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Cheap flights from Washington, D.C. Reagan-National Airport to Idaho from $131

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. Reagan-National Airport to Idaho departing on 10/25. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Washington, D.C. Reagan-National Airport to Idaho

Cheap round-trip flights

Frontier Logo
1:00 pm - 11:08 amDCA-GEG
25h 08m1 stop
Frontier Logo
12:03 pm - 12:04 pmGEG-DCA
21h 01m1 stop
$227Frontier
Find Deal
Wed, Nov 5 - Thu, Nov 13
Frontier Logo
6:00 pm - 11:08 amDCA-GEG
20h 08m1 stop
Frontier Logo
12:03 pm - 12:04 pmGEG-DCA
21h 01m1 stop
$238Frontier
Find Deal
Sat, Nov 8 - Thu, Nov 13
American Airlines Logo
6:07 am - 12:04 pmDCA-JAC
7h 57m1 stop
American Airlines Logo
2:02 pm - 11:00 pmJAC-DCA
6h 58m1 stop
$279American Airlines
Find Deal
Fri, Jan 23 - Tue, Jan 27
American Airlines Logo
6:00 am - 2:17 pmDCA-JAC
10h 17m2 stops
American Airlines Logo
2:02 pm - 11:00 pmJAC-DCA
6h 58m1 stop
$284American Airlines
Find Deal
Fri, Jan 23 - Tue, Jan 27
Multiple Airlines Logo
5:53 pm - 11:59 pmDCA-BOI
8h 06m1 stop
Multiple Airlines Logo
5:54 am - 4:00 pmBOI-DCA
8h 06m1 stop
$297Multiple Airlines
Find Deal
Sat, Nov 8 - Tue, Nov 11
Delta Logo
4:59 pm - 12:08 amDCA-BOI
9h 09m1 stop
Delta Logo
5:25 am - 3:28 pmBOI-DCA
8h 03m1 stop
$309Delta
Find Deal
Wed, Oct 15 - Thu, Oct 16
Delta Logo
4:59 pm - 11:59 pmDCA-GEG
10h 00m1 stop
Delta Logo
12:51 pm - 10:40 pmGEG-DCA
6h 49m1 stop
$317Delta
Find Deal
Wed, Oct 22 - Wed, Oct 29
Multiple Airlines Logo
1:00 pm - 11:08 amDCA-GEG
25h 08m1 stop
Multiple Airlines Logo
6:38 pm - 9:59 pmGEG-DCA
24h 21m2 stops
$320Multiple Airlines
Find Deal
Wed, Oct 22 - Mon, Oct 27
United Airlines Logo
6:25 am - 11:39 amDCA-BOI
7h 14m1 stop
United Airlines Logo
9:45 am - 9:51 pmBOI-DCA
10h 06m1 stop
$337United Airlines
Find Deal
Sat, Oct 11 - Wed, Oct 15
United Airlines Logo
2:00 pm - 8:34 pmDCA-JAC
8h 34m1 stop
United Airlines Logo
12:43 pm - 8:59 pmJAC-DCA
6h 16m1 stop
$363United Airlines
Find Deal
Mon, Jan 5 - Fri, Jan 9

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 15
DCA4:59 pmWashington, D.C. Reagan-National
9h 09m
1 stop
BOI12:08 amBoise Air Term. Gowen Fld
Oct 16
BOI5:25 amBoise Air Term. Gowen Fld
8h 03m
1 stop
DCA3:28 pmWashington, D.C. Reagan-National
$309
Find similar
Delta
Oct 22
DCA4:59 pmWashington, D.C. Reagan-National
10h 00m
1 stop
GEG11:59 pmSpokane
Oct 29
GEG12:51 pmSpokane
6h 49m
1 stop
DCA10:40 pmWashington, D.C. Reagan-National
$317
Find similar
Delta
Oct 31
DCA7:45 amWashington, D.C. Reagan-National
11h 03m
2 stops
JAC4:48 pmJackson Hole
Nov 3
JAC1:00 pmJackson Hole
8h 41m
2 stops
DCA11:41 pmWashington, D.C. Reagan-National
$319
Find similar

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
Nov 5
DCA1:00 pmWashington, D.C. Reagan-National
25h 08m
1 stop
GEG11:08 amSpokane
Nov 13
GEG12:03 pmSpokane
21h 01m
1 stop
DCA12:04 pmWashington, D.C. Reagan-National
$227
Find similar
Frontier
Nov 8
DCA6:00 pmWashington, D.C. Reagan-National
20h 08m
1 stop
GEG11:08 amSpokane
Nov 13
GEG12:03 pmSpokane
21h 01m
1 stop
DCA12:04 pmWashington, D.C. Reagan-National
$238
Find similar
Frontier
Oct 3
DCA7:00 amWashington, D.C. Reagan-National
6h 37m
1 stop
BOI11:37 amBoise Air Term. Gowen Fld
Oct 5
BOI12:22 pmBoise Air Term. Gowen Fld
21h 48m
1 stop
DCA12:10 pmWashington, D.C. Reagan-National
$239
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Reagan-National Airport to Idaho that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated September 22, 2025.
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

Washington, D.C.Spokane

DCA - GEG

DCAGEG

Washington, D.C. Reagan-National

Wed 11/5

1:00 pm-11:08 am

1 stop25h 08m

Spokane

Thu 11/13

12:03 pm-12:04 pm

1 stop21h 01m

$227

Washington, D.C.Spokane

DCA - GEG

DCAGEG

Washington, D.C. Reagan-National

Sat 11/8

6:00 pm-11:08 am

1 stop20h 08m

Spokane

Thu 11/13

12:03 pm-12:04 pm

1 stop21h 01m

$238

Washington, D.C.Jackson

DCA - JAC

DCAJAC

Washington, D.C. Reagan-National

Fri 1/23

6:07 am-12:04 pm

1 stop7h 57m

Jackson Hole

Tue 1/27

2:02 pm-11:00 pm

1 stop6h 58m

$279

Washington, D.C.Jackson

DCA - JAC

DCAJAC

Washington, D.C. Reagan-National

Fri 1/23

6:00 am-2:17 pm

2 stops10h 17m

Jackson Hole

Tue 1/27

2:02 pm-11:00 pm

1 stop6h 58m

$284

Washington, D.C.Boise

DCA - BOI

DCABOI

Washington, D.C. Reagan-National

Sat 11/8

5:53 pm-11:59 pm

1 stop8h 06m

Boise Air Term. Gowen Fld

Tue 11/11

5:54 am-4:00 pm

1 stop8h 06m

$297

Washington, D.C.Boise

DCA - BOI

DCABOI

Washington, D.C. Reagan-National

Wed 10/15

4:59 pm-12:08 am

1 stop9h 09m

Boise Air Term. Gowen Fld

Thu 10/16

5:25 am-3:28 pm

1 stop8h 03m

$309

Washington, D.C.Spokane

DCA - GEG

DCAGEG

Washington, D.C. Reagan-National

Wed 10/22

4:59 pm-11:59 pm

1 stop10h 00m

Spokane

Wed 10/29

12:51 pm-10:40 pm

1 stop6h 49m

$317

Washington, D.C.Spokane

DCA - GEG

DCAGEG

Washington, D.C. Reagan-National

Wed 10/22

1:00 pm-11:08 am

1 stop25h 08m

Spokane

Mon 10/27

6:38 pm-9:59 pm

2 stops24h 21m

$320

Washington, D.C.Boise

DCA - BOI

DCABOI

Washington, D.C. Reagan-National

Sat 10/11

6:25 am-11:39 am

1 stop7h 14m

Boise Air Term. Gowen Fld

Wed 10/15

9:45 am-9:51 pm

1 stop10h 06m

$337

Washington, D.C.Jackson

DCA - JAC

DCAJAC

Washington, D.C. Reagan-National

Mon 1/5

2:00 pm-8:34 pm

1 stop8h 34m

Jackson Hole

Fri 1/9

12:43 pm-8:59 pm

1 stop6h 16m

$363

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Idaho from

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

What is the cheapest month to fly to Idaho?

In general, January 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 $335. If you don’t want to visit Idaho in January, then you should wait until September to fly from Washington, D.C. Reagan-National Airport, when ticket prices are also cheap, with an average price of $340.

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 $430. On the other hand, Monday is the most expensive day to depart from Washington, D.C. Reagan-National Airport because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $612.

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 in the morning. momondo users have found flights departing from Washington, D.C. Reagan-National Airport to Idaho in the morning for as low as $521. 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 afternoon is when there is more demand to fly to Idaho, so prices are often more expensive at around $547 per ticket.

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

Direct flights

None
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

  • 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?

  • 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
DeltaPriceFrom $202Free CancellationRating
7.9
7,971 reviews
Search Delta flights
United AirlinesPriceFrom $222Free CancellationRating
7.4
8,922 reviews
Search United Airlines flights
American AirlinesPriceFrom $300Free CancellationRating
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. 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.

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