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Cheap flights from Washington, D.C. Dulles Intl Airport to Idaho from $145

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. Dulles Intl Airport to Idaho departing on 3/15. 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. Dulles Intl Airport to Idaho

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
4:11 pm - 8:42 pm
IAD
-
JAC
6h 31m1 stop
United Airlines Logo
2:40 pm - 11:22 pm
JAC
-
IAD
6h 42m1 stop
$280United Airlines
Tue, Jan 6 - Tue, Jan 13
Delta Logo
7:00 am - 4:19 pm
IAD
-
JAC
11h 19m2 stops
Delta Logo
1:05 pm - 11:46 pm
JAC
-
IAD
8h 41m1 stop
$285Delta
Tue, Feb 24 - Thu, Feb 26
Alaska Airlines Logo
6:04 pm - 11:04 pm
IAD
-
GEG
8h 00m1 stop
Alaska Airlines Logo
5:45 am - 4:26 pm
GEG
-
IAD
7h 41m1 stop
$286Alaska Airlines
Mon, Feb 2 - Sat, Feb 7
Alaska Airlines Logo
6:04 pm - 11:04 pm
IAD
-
GEG
8h 00m1 stop
Alaska Airlines Logo
5:45 am - 4:26 pm
GEG
-
IAD
7h 41m1 stop
$287Alaska Airlines
Sat, Jan 31 - Wed, Feb 4
Delta Logo
7:30 am - 4:17 pm
IAD
-
BOI
10h 47m1 stop
Delta Logo
10:41 am - 11:10 pm
BOI
-
IAD
10h 29m1 stop
$287Delta
Wed, Feb 11 - Sun, Feb 15
Delta Logo
7:05 am - 4:17 pm
IAD
-
BOI
11h 12m2 stops
Delta Logo
10:41 am - 11:10 pm
BOI
-
IAD
10h 29m1 stop
$292Delta
Wed, Feb 11 - Sun, Feb 15
United Airlines Logo
6:00 am - 12:58 pm
IAD
-
JAC
8h 58m1 stop
United Airlines Logo
2:40 pm - 11:22 pm
JAC
-
IAD
6h 42m1 stop
$311United Airlines
Thu, Jan 8 - Mon, Jan 12
Southwest Logo
5:30 pm - 9:45 pm
IAD
-
GEG
7h 15m1 stop
Southwest Logo
7:05 am - 9:55 pm
GEG
-
IAD
11h 50m2 stops
$322Southwest
Tue, Feb 3 - Wed, Feb 4
American Airlines Logo
6:00 am - 1:37 pm
IAD
-
IDA
9h 37m1 stop
American Airlines Logo
6:42 am - 10:48 pm
IDA
-
IAD
14h 06m2 stops
$407American Airlines
Mon, Jan 19 - Wed, Mar 4
American Airlines Logo
11:34 am - 10:36 pm
IAD
-
IDA
13h 02m2 stops
American Airlines Logo
7:20 am - 11:12 pm
IDA
-
IAD
13h 52m2 stops
$412American Airlines
Thu, Jan 22 - Tue, Jan 27

Delta flights from Washington, D.C. Dulles Intl Airport to Idaho

Our best Delta deals on Washington, D.C. Dulles Intl Airport to Idaho flight tickets
Delta
Feb 24
IAD7:00 amWashington, D.C. Dulles Intl
11h 19m
2 stops
JAC4:19 pmJackson Hole
Feb 26
JAC1:05 pmJackson Hole
8h 41m
1 stop
IAD11:46 pmWashington, D.C. Dulles Intl
$285
Find similar
Delta
Feb 11
IAD7:30 amWashington, D.C. Dulles Intl
10h 47m
1 stop
BOI4:17 pmBoise Air Term. Gowen Fld
Feb 15
BOI10:41 amBoise Air Term. Gowen Fld
10h 29m
1 stop
IAD11:10 pmWashington, D.C. Dulles Intl
$287
Find similar
Delta
Feb 11
IAD7:05 amWashington, D.C. Dulles Intl
11h 12m
2 stops
BOI4:17 pmBoise Air Term. Gowen Fld
Feb 15
BOI10:41 amBoise Air Term. Gowen Fld
10h 29m
1 stop
IAD11:10 pmWashington, D.C. Dulles Intl
$292
Find similar

Southwest flights from Washington, D.C. Dulles Intl Airport to Idaho

Our best Southwest deals on Washington, D.C. Dulles Intl Airport to Idaho flight tickets
Southwest
Feb 3
IAD9:05 amWashington, D.C. Dulles Intl
14h 45m
2 stops
GEG8:50 pmSpokane
Feb 4
GEG7:05 amSpokane
11h 50m
2 stops
IAD9:55 pmWashington, D.C. Dulles Intl
$327
Find similar
Southwest
Feb 1
IAD5:30 amWashington, D.C. Dulles Intl
13h 40m
2 stops
GEG4:10 pmSpokane
Feb 10
GEG12:10 pmSpokane
6h 45m
1 stop
IAD9:55 pmWashington, D.C. Dulles Intl
$362
Find similar
Southwest
Feb 1
IAD5:30 amWashington, D.C. Dulles Intl
13h 40m
2 stops
GEG4:10 pmSpokane
Feb 10
GEG7:05 amSpokane
11h 50m
2 stops
IAD9:55 pmWashington, D.C. Dulles Intl
$367
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Dulles Intl 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 December 11, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Idaho that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Jackson

IAD - JAC

IADJAC

Washington, D.C. Dulles Intl

Tue 1/6

4:11 pm-8:42 pm

1 stop6h 31m

Jackson Hole

Tue 1/13

2:40 pm-11:22 pm

1 stop6h 42m

$280

Washington, D.C.Jackson

IAD - JAC

IADJAC

Washington, D.C. Dulles Intl

Tue 2/24

7:00 am-4:19 pm

2 stops11h 19m

Jackson Hole

Thu 2/26

1:05 pm-11:46 pm

1 stop8h 41m

$285

Washington, D.C.Spokane

IAD - GEG

IADGEG

Washington, D.C. Dulles Intl

Mon 2/2

6:04 pm-11:04 pm

1 stop8h 00m

Spokane

Sat 2/7

5:45 am-4:26 pm

1 stop7h 41m

$286

Washington, D.C.Spokane

IAD - GEG

IADGEG

Washington, D.C. Dulles Intl

Sat 1/31

6:04 pm-11:04 pm

1 stop8h 00m

Spokane

Wed 2/4

5:45 am-4:26 pm

1 stop7h 41m

$287

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Wed 2/11

7:30 am-4:17 pm

1 stop10h 47m

Boise Air Term. Gowen Fld

Sun 2/15

10:41 am-11:10 pm

1 stop10h 29m

$287

Washington, D.C.Boise

IAD - BOI

IADBOI

Washington, D.C. Dulles Intl

Wed 2/11

7:05 am-4:17 pm

2 stops11h 12m

Boise Air Term. Gowen Fld

Sun 2/15

10:41 am-11:10 pm

1 stop10h 29m

$292

Washington, D.C.Jackson

IAD - JAC

IADJAC

Washington, D.C. Dulles Intl

Thu 1/8

6:00 am-12:58 pm

1 stop8h 58m

Jackson Hole

Mon 1/12

2:40 pm-11:22 pm

1 stop6h 42m

$311

Washington, D.C.Spokane

IAD - GEG

IADGEG

Washington, D.C. Dulles Intl

Tue 2/3

5:30 pm-9:45 pm

1 stop7h 15m

Spokane

Wed 2/4

7:05 am-9:55 pm

2 stops11h 50m

$322

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Mon 1/19

6:00 am-1:37 pm

1 stop9h 37m

Idaho Falls Fanning Field

Wed 3/4

6:42 am-10:48 pm

2 stops14h 06m

$407

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Thu 1/22

11:34 am-10:36 pm

2 stops13h 02m

Idaho Falls Fanning Field

Tue 1/27

7:20 am-11:12 pm

2 stops13h 52m

$412

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. Dulles Intl 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, May is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Idaho. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $304. If you don’t want to visit Idaho in May, then you should wait until November to fly from Washington, D.C. Dulles Intl Airport, when ticket prices are also cheap, with an average price of $308.

What is the cheapest day to depart on your flight to Idaho?

Our data shows that Wednesday is the least expensive day to fly to Idaho. Tickets to fly out on this day can be as low as $434. On the other hand, Monday is the most expensive day to depart from Washington, D.C. Dulles Intl Airport because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $711.

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. Dulles Intl Airport to Idaho at noon for as low as $431. 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 $671 per ticket.

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

You could potentially save up to 56% on your flight if you consider stops on a Washington, D.C. Dulles Intl Airport to Idaho flight.

Cheap Washington, D.C. Dulles Intl Airport to Idaho flight deals and tips

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

Fastest flight time

4h 30m

Direct flights

Sun

Airports in Idaho

27 airports
The fastest flight from Washington, D.C. Dulles Intl Airport to Idaho takes 4h 30m
Direct flights go from Washington, D.C. Dulles Intl Airport to Idaho on Sunday. There are no airlines offering direct flights.
There are 27 airports in Idaho. From Washington, D.C. Dulles Intl Airport there are direct flights to Jackson Hole (JAC).
Search flight deals

  • When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to Idaho?

    Prices for flights from Washington, D.C. Dulles Intl Airport to Idaho refresh daily.

  • How many operators does momondo search for flights from Washington, D.C. Dulles Intl Airport to Idaho?

  • How old do you have to be to fly from Washington, D.C. Dulles Intl 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. Dulles Intl Airport 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. Dulles Intl Airport to Idaho

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to Idaho with momondo
Airline
Rating
Free Cancellation
Price
Alaska AirlinesPriceFrom $182Free CancellationRating
8.0
11,431 reviews
Search Alaska Airlines flights
DeltaPriceFrom $237Free CancellationRating
7.9
8,005 reviews
Search Delta flights
United AirlinesPriceFrom $278Free CancellationRating
7.4
9,095 reviews
Search United Airlines flights
SouthwestPriceFrom $429Free CancellationRating
7.9
4,253 reviews
Search Southwest flights

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Idaho?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Idaho from Washington, D.C..

Can I find flights from Washington, D.C. to Idaho with flexible booking policies on momondo?

momondo does allow users to show only those flights to Idaho from Washington, D.C. which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Washington, D.C. to Idaho?

momondo provides multiple filters to help you find the best flight to Idaho from Washington, D.C.. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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.

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