Which layover airport has the shortest connection time from Washington, D.C. to Idaho Falls?

Denver (DEN) has the shortest average layover time for this route: 0h 50m.

Which layover airport has the shortest travel time from Washington, D.C. to Idaho Falls?

Flights connecting via Denver (DEN) have the shortest average one-way travel time: 6h 32m.

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

Alaska Airlines and American Airlines are the most popular carriers operating from Washington, D.C. to Idaho Falls Fanning Field

Which layover airport offers the lowest fares from Washington, D.C. to Idaho Falls?

Flights via Chicago (ORD) offer the lowest average round-trip price of $446.

What airlines fly to Idaho Falls?

United Airlines, American Airlines and Delta are the top three most popular airlines that fly to Idaho Falls from Washington, D.C. according to our data. United Airlines is the first choice among our users, with 58% of people opting to fly with this airline when traveling to Idaho Falls. Keep in mind that there are 3 different airlines that fly to Idaho Falls on a routine basis, so you have a few additional options to choose from.

Which airport is the most popular layover for flights between Washington, D.C. and Idaho Falls?

Chicago (ORD) was the most common stop: 50% of momondo users choosing 1-stop flights on this route connected there.

How long does it take to fly to Idaho Falls?

If you’re flying from a popular airport in Washington, D.C., such as Washington, D.C. or Baltimore, and flying into Idaho Falls, then you can expect flight times to average 5h 33m and 6h 32m, respectively.

When did momondo last update prices for flights from Washington, D.C. to Idaho Falls Fanning Field Airport?

Prices for flights from Washington, D.C. to Idaho Falls Fanning Field Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Washington, D.C. to Idaho Falls Fanning Field Airport?

There are 3 operators available for flights from Washington, D.C. to Idaho Falls Fanning Field Airport as of December 2025.

How old do you have to be to fly from Washington, D.C. to Idaho Falls Fanning Field Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington, D.C. to Idaho Falls Fanning Field Airport.

What documentation or ID do you need to fly to Idaho Falls Fanning Field Airport?

The travel and health documents you'll need for your trip to Idaho Falls Fanning Field Airport 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 Falls Fanning Field Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$200 Cheap Flights from Washington, D.C. to Idaho Falls in 2025/26

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

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Cheap round-trip flights

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8:00 am - 10:59 pm

DCA

IDA

16h 59m1 stop

9:00 am - 4:09 pm

IDA

DCA

29h 09m1 stop

$364Alaska Airlines

Sat, Jan 24 - Wed, Jan 28

6:04 pm - 10:59 pm

IAD

IDA

30h 55m1 stop

6:58 pm - 4:26 pm

IDA

IAD

19h 28m1 stop

$374Alaska Airlines

Thu, Jan 22 - Tue, Jan 27

6:04 pm - 10:59 pm

IAD

IDA

30h 55m1 stop

9:00 am - 4:26 pm

IDA

IAD

29h 26m1 stop

$375Alaska Airlines

Sat, Jan 24 - Wed, Jan 28

7:05 am - 4:43 pm

IAD

IDA

11h 38m1 stop

8:00 am - 5:55 pm

IDA

IAD

7h 55m1 stop

$388Alaska Airlines

Tue, Mar 10 - Wed, Mar 18

8:15 am - 3:31 pm

IAD

IDA

9h 16m1 stop

2:40 pm - 11:19 pm

IDA

IAD

6h 39m1 stop

$402United Airlines

Mon, Jan 19 - Wed, Mar 4

6:00 am - 1:37 pm

IAD

IDA

9h 37m1 stop

6:42 am - 10:48 pm

IDA

IAD

14h 06m2 stops

$407American Airlines

Mon, Jan 19 - Wed, Mar 4

11:34 am - 10:36 pm

IAD

IDA

13h 02m2 stops

7:20 am - 11:12 pm

IDA

IAD

13h 52m2 stops

$412American Airlines

Thu, Jan 22 - Tue, Jan 27

7:00 am - 12:22 pm

BWI

IDA

7h 22m1 stop

6:59 pm - 5:51 am

IDA

BWI

8h 52m1 stop

$421Delta

Tue, Mar 10 - Tue, Mar 17

2:07 pm - 10:20 pm

IAD

IDA

10h 13m2 stops

6:59 pm - 9:08 am

IDA

IAD

12h 09m2 stops

$425Delta

Mon, Mar 9 - Mon, Mar 16

4:10 pm - 9:20 pm

BWI

IDA

7h 10m1 stop

2:40 pm - 11:25 pm

IDA

BWI

6h 45m1 stop

$444United Airlines

Sat, Feb 28 - Tue, Mar 3

United Airlines flights from Washington, D.C. to Idaho Falls

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

United Airlines

Jan 19

IAD8:15 amWashington, D.C. Dulles Intl

9h 16m

1 stop

IDA3:31 pmIdaho Falls Fanning Field

Mar 4

IDA2:40 pmIdaho Falls Fanning Field

6h 39m

1 stop

IAD11:19 pmWashington, D.C. Dulles Intl

$402

Find similar

United Airlines

Mar 12

IAD8:20 amWashington, D.C. Dulles Intl

7h 10m

1 stop

IDA1:30 pmIdaho Falls Fanning Field

Mar 16

IDA2:35 pmIdaho Falls Fanning Field

6h 45m

1 stop

IAD11:20 pmWashington, D.C. Dulles Intl

$440

Find similar

United Airlines

Feb 28

BWI4:10 pmBaltimore/Washington

7h 10m

1 stop

IDA9:20 pmIdaho Falls Fanning Field

Mar 3

IDA2:40 pmIdaho Falls Fanning Field

6h 45m

1 stop

BWI11:25 pmBaltimore/Washington

$444

Find similar

Delta flights from Washington, D.C. to Idaho Falls

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

Delta

Mar 10

DCA5:12 pmWashington, D.C. Reagan-National

7h 08m

1 stop

IDA10:20 pmIdaho Falls Fanning Field

Mar 16

IDA6:59 pmIdaho Falls Fanning Field

12h 11m

2 stops

DCA9:10 amWashington, D.C. Reagan-National

$407

Find similar

Delta

Mar 9

DCA5:12 pmWashington, D.C. Reagan-National

7h 08m

1 stop

IDA10:20 pmIdaho Falls Fanning Field

Mar 16

IDA6:59 pmIdaho Falls Fanning Field

12h 11m

2 stops

DCA9:10 amWashington, D.C. Reagan-National

$420

Find similar

Delta

Mar 10

BWI7:00 amBaltimore/Washington

7h 22m

1 stop

IDA12:22 pmIdaho Falls Fanning Field

Mar 17

IDA6:59 pmIdaho Falls Fanning Field

8h 52m

1 stop

BWI5:51 amBaltimore/Washington

$421

Find similar

momondo Fare Finder

Use the filters below to find and compare flights from Washington, D.C. to Idaho Falls that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Sat 1/24

8:00 am-10:59 pm

1 stop16h 59m

Idaho Falls Fanning Field

Wed 1/28

9:00 am-4:09 pm

1 stop29h 09m

$364

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Thu 1/22

6:04 pm-10:59 pm

1 stop30h 55m

Idaho Falls Fanning Field

Tue 1/27

6:58 pm-4:26 pm

1 stop19h 28m

$374

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Sat 1/24

6:04 pm-10:59 pm

1 stop30h 55m

Idaho Falls Fanning Field

Wed 1/28

9:00 am-4:26 pm

1 stop29h 26m

$375

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Tue 3/10

7:05 am-4:43 pm

1 stop11h 38m

Idaho Falls Fanning Field

Wed 3/18

8:00 am-5:55 pm

1 stop7h 55m

$388

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Mon 1/19

8:15 am-3:31 pm

1 stop9h 16m

Idaho Falls Fanning Field

Wed 3/4

2:40 pm-11:19 pm

1 stop6h 39m

$402

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

BaltimoreIdaho Falls

BWI - IDA

BWIIDA

Baltimore/Washington

Tue 3/10

7:00 am-12:22 pm

1 stop7h 22m

Idaho Falls Fanning Field

Tue 3/17

6:59 pm-5:51 am

1 stop8h 52m

$421

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Mon 3/9

2:07 pm-10:20 pm

2 stops10h 13m

Idaho Falls Fanning Field

Mon 3/16

6:59 pm-9:08 am

2 stops12h 09m

$425

BaltimoreIdaho Falls

BWI - IDA

BWIIDA

Baltimore/Washington

Sat 2/28

4:10 pm-9:20 pm

1 stop7h 10m

Idaho Falls Fanning Field

Tue 3/3

2:40 pm-11:25 pm

1 stop6h 45m

$444

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 resultsSorted by cheapest first

How to get the cheapest flight ticket from Washington, D.C. to Idaho Falls

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

Layovers

Other information

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

Our data shows that Saturday is the least expensive day to fly to Idaho Falls. Tickets to fly out on this day can be as low as $562. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Idaho Falls on Sunday is $870.

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

Our most recent data shows that the best time of day to fly to Idaho Falls is in the morning. Flights from Washington, D.C. to Idaho Falls during this time can be as low as $716. Try not to purchase tickets in the afternoon because they tend to be around $758. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

You could potentially save up to 33% on your flight if you consider stops on a Washington, D.C. to Idaho Falls flight.

When to book flights from Washington, D.C. to Idaho Falls

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. to Idaho Falls according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Washington, D.C. to Idaho Falls (WAS to IDA) flight deals and tips

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

Fastest flight time	6h 57m
Direct flights	None

The fastest flight from Washington, D.C. to Idaho Falls takes 6h 57m

There are no direct flights from Washington, D.C. to Idaho Falls. There are no popular flight routes from Washington, D.C. to Idaho Falls.

Search flight deals

How far is Washington, D.C. to Idaho Falls Fanning Field by plane?
A flight from Washington, D.C. to Idaho Falls Fanning Field will travel around 1831.8 mi. Flights usually cover this in 6h 57m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Washington, D.C. to Idaho Falls Fanning Field Airport?
Prices for flights from Washington, D.C. to Idaho Falls Fanning Field Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Washington, D.C. to Idaho Falls Fanning Field Airport?
There are 3 operators available for flights from Washington, D.C. to Idaho Falls Fanning Field Airport as of December 2025.
How old do you have to be to fly from Washington, D.C. to Idaho Falls Fanning Field Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington, D.C. to Idaho Falls Fanning Field Airport.
What documentation or ID do you need to fly to Idaho Falls Fanning Field Airport?
The travel and health documents you'll need for your trip to Idaho Falls Fanning Field Airport 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 Falls Fanning Field Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Washington, D.C. to Idaho Falls?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Washington, D.C. to Idaho Falls is United Airlines (65% of total bookings). The next most popular airline is American Airlines (35%).

Best airlines flying from Washington, D.C. to Idaho Falls

Compare and see reviews for airlines that fly from Washington, D.C. to Idaho Falls with momondo

Airline	Rating	Free Cancellation	Price
American Airlines	PriceFrom $334	Free Cancellation	Rating 7.2 11,050 reviews	Search American Airlines flights
Delta	PriceFrom $334	Free Cancellation	Rating 7.9 8,007 reviews	Search Delta flights
United Airlines	PriceFrom $388	Free Cancellation	Rating 7.4 9,095 reviews	Search United Airlines flights

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Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Washington, D.C. to Idaho Falls. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. momondo enables you to select and highlight flights to Idaho Falls from Washington, D.C. with this policy.

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

momondo helps you find the best flight between Washington, D.C. and Idaho Falls by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Washington, D.C. to Idaho Falls right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Washington, D.C. to Idaho Falls flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

An easier way to manage your Idaho Falls trip

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Cheap flights from Washington, D.C. to Idaho Falls from $200

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. to Idaho Falls departing on 1/6. 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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Filter for what you want

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

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United Airlines flights from Washington, D.C. to Idaho Falls

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

Delta flights from Washington, D.C. to Idaho Falls

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

momondo Fare Finder

Use the filters below to find and compare flights from Washington, D.C. to Idaho Falls that are best for you.

See travel insights to Idaho Falls from

How to get the cheapest flight ticket from Washington, D.C. to Idaho Falls

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

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

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

You could potentially save up to 33% on your flight if you consider stops on a Washington, D.C. to Idaho Falls flight.

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

Alaska Airlines and American Airlines are the most popular carriers operating from Washington, D.C. to Idaho Falls Fanning Field

What airlines fly to Idaho Falls?

Which airport is the most popular layover for flights between Washington, D.C. and Idaho Falls?

Chicago (ORD) was the most common stop: 50% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Washington, D.C. to Idaho Falls?

Flights via Chicago (ORD) offer the lowest average round-trip price of $446.

Which layover airport has the shortest travel time from Washington, D.C. to Idaho Falls?

Flights connecting via Denver (DEN) have the shortest average one-way travel time: 6h 32m.

Which layover airport has the shortest connection time from Washington, D.C. to Idaho Falls?

Denver (DEN) has the shortest average layover time for this route: 0h 50m.

How long does it take to fly to Idaho Falls?

If you’re flying from a popular airport in Washington, D.C., such as Washington, D.C. or Baltimore, and flying into Idaho Falls, then you can expect flight times to average 5h 33m and 6h 32m, respectively.

When to book flights from Washington, D.C. to Idaho Falls

Cheap Washington, D.C. to Idaho Falls (WAS to IDA) flight deals and tips

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

Fastest flight time

Direct flights

How far is Washington, D.C. to Idaho Falls Fanning Field by plane?

When did momondo last update prices for flights from Washington, D.C. to Idaho Falls Fanning Field Airport?

How many operators does momondo search for flights from Washington, D.C. to Idaho Falls Fanning Field Airport?

How old do you have to be to fly from Washington, D.C. to Idaho Falls Fanning Field Airport?

What documentation or ID do you need to fly to Idaho Falls Fanning Field Airport?

What is the most popular airline from Washington, D.C. to Idaho Falls?

Best airlines flying from Washington, D.C. to Idaho Falls

Compare and see reviews for airlines that fly from Washington, D.C. to Idaho Falls with momondo

Traveling to a place near Idaho Falls?

Why use momondo?

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

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

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

I’m not ready to book a flight from Washington, D.C. to Idaho Falls right now. Can momondo alert me if prices change?

An easier way to manage your Idaho Falls trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing Idaho