How long does it take to fly to Idaho Falls?

If you’re flying from a popular airport in Washington, D.C., such as Baltimore or Washington, D.C., and flying into Idaho Falls, then you can expect flight times to average 6h 16m and 6h 22m, respectively.

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.

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

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

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 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 68% of people opting to fly with this airline when traveling to Idaho Falls. Keep in mind that there are 4 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.

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.

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 2 operators available for flights from Washington, D.C. to Idaho Falls Fanning Field Airport as of June 2026.

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.

$104 Cheap Flights from Washington, D.C. to Idaho Falls in 2026

Discover deals from 900+ travel sites with momondo.

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

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:30 am - 1:25 pm

IAD

IDA

8h 55m

1 stop

4:14 pm - 12:45 am

IDA

IAD

6h 31m

1 stop

$374United Airlines

Sat, Jul 4 - Fri, Jul 10

5:59 pm - 10:32 pm

DCA

IDA

6h 33m

1 stop

7:00 pm - 10:09 am

IDA

DCA

13h 09m

2 stops

$379Delta

Tue, Aug 11 - Tue, Aug 18

7:05 am - 2:37 pm

BWI

IDA

9h 32m

1 stop

7:00 pm - 6:00 am

IDA

BWI

9h 00m

1 stop

$384Delta

Sat, Jul 4 - Sat, Jul 18

6:08 am - 2:37 pm

BWI

IDA

10h 29m

2 stops

7:00 pm - 6:00 am

IDA

BWI

9h 00m

1 stop

$389Delta

Sat, Jul 4 - Sat, Jul 18

6:30 am - 1:29 pm

IAD

IDA

8h 59m

1 stop

2:28 pm - 11:25 pm

IDA

IAD

6h 57m

1 stop

$398United Airlines

Mon, Sep 7 - Sat, Sep 26

7:00 am - 3:17 pm

BWI

IDA

10h 17m

1 stop

6:04 am - 5:12 pm

IDA

BWI

9h 08m

1 stop

$419Alaska Airlines

Sat, Nov 14 - Tue, Nov 17

9:50 am - 4:05 pm

IAD

IDA

8h 15m

1 stop

10:54 pm - 12:47 pm

IDA

IAD

35h 53m

2 stops

$434Multiple Airlines

Mon, Aug 10 - Fri, Aug 14

8:00 am - 3:35 pm

DCA

IDA

9h 35m

1 stop

6:09 am - 4:25 pm

IDA

DCA

8h 16m

1 stop

$468Alaska Airlines

Tue, Oct 27 - Sat, Oct 31

6:09 am - 11:30 am

IAD

IDA

7h 21m

1 stop

7:00 am - 6:27 pm

IDA

IAD

9h 27m

1 stop

$471American Airlines

Sat, Aug 22 - Sat, Aug 29

6:59 am - 12:20 pm

DCA

IDA

7h 21m

1 stop

1:58 pm - 11:00 pm

IDA

DCA

7h 02m

1 stop

$501American Airlines

Fri, Oct 30 - Sat, Nov 7

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

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

Delta

Aug 11

DCA5:59 pmWashington, D.C. Reagan-National

6h 33m

1 stop

IDA10:32 pmIdaho Falls Fanning Field

Aug 18

IDA7:00 pmIdaho Falls Fanning Field

13h 09m

2 stops

DCA10:09 amWashington, D.C. Reagan-National

$379

Delta

Jul 4

BWI7:05 amBaltimore/Washington

9h 32m

1 stop

IDA2:37 pmIdaho Falls Fanning Field

Jul 18

IDA7:00 pmIdaho Falls Fanning Field

9h 00m

1 stop

BWI6:00 amBaltimore/Washington

$384

Delta

Jul 4

BWI6:08 amBaltimore/Washington

10h 29m

2 stops

IDA2:37 pmIdaho Falls Fanning Field

Jul 18

IDA7:00 pmIdaho Falls Fanning Field

9h 00m

1 stop

BWI6:00 amBaltimore/Washington

$389

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

Jul 4

IAD6:30 amWashington, D.C. Dulles Intl

8h 55m

1 stop

IDA1:25 pmIdaho Falls Fanning Field

Jul 10

IDA4:14 pmIdaho Falls Fanning Field

6h 31m

1 stop

IAD12:45 amWashington, D.C. Dulles Intl

$374

United Airlines

Sep 7

IAD6:30 amWashington, D.C. Dulles Intl

8h 59m

1 stop

IDA1:29 pmIdaho Falls Fanning Field

Sep 26

IDA2:28 pmIdaho Falls Fanning Field

6h 57m

1 stop

IAD11:25 pmWashington, D.C. Dulles Intl

$398

United Airlines

Jul 7

IAD6:30 amWashington, D.C. Dulles Intl

8h 55m

1 stop

IDA1:25 pmIdaho Falls Fanning Field

Jul 10

IDA4:14 pmIdaho Falls Fanning Field

6h 31m

1 stop

IAD12:45 amWashington, D.C. Dulles Intl

$444

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

Cheapest round-trip

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Sat 7/4

6:30 am-1:25 pm

1 stop8h 55m

Idaho Falls Fanning Field

Fri 7/10

4:14 pm-12:45 am

1 stop6h 31m

$374

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Tue 8/11

5:59 pm-10:32 pm

1 stop6h 33m

Idaho Falls Fanning Field

Tue 8/18

7:00 pm-10:09 am

2 stops13h 09m

$379

BaltimoreIdaho Falls

BWI - IDA

BWIIDA

Baltimore/Washington

Sat 7/4

7:05 am-2:37 pm

1 stop9h 32m

Idaho Falls Fanning Field

Sat 7/18

7:00 pm-6:00 am

1 stop9h 00m

$384

BaltimoreIdaho Falls

BWI - IDA

BWIIDA

Baltimore/Washington

Sat 7/4

6:08 am-2:37 pm

2 stops10h 29m

Idaho Falls Fanning Field

Sat 7/18

7:00 pm-6:00 am

1 stop9h 00m

$389

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Mon 9/7

6:30 am-1:29 pm

1 stop8h 59m

Idaho Falls Fanning Field

Sat 9/26

2:28 pm-11:25 pm

1 stop6h 57m

$398

BaltimoreIdaho Falls

BWI - IDA

BWIIDA

Baltimore/Washington

Sat 11/14

7:00 am-3:17 pm

1 stop10h 17m

Idaho Falls Fanning Field

Tue 11/17

6:04 am-5:12 pm

1 stop9h 08m

$419

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Mon 8/10

9:50 am-4:05 pm

1 stop8h 15m

Idaho Falls Fanning Field

Fri 8/14

10:54 pm-12:47 pm

2 stops35h 53m

$434

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Tue 10/27

8:00 am-3:35 pm

1 stop9h 35m

Idaho Falls Fanning Field

Sat 10/31

6:09 am-4:25 pm

1 stop8h 16m

$468

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Sat 8/22

6:09 am-11:30 am

1 stop7h 21m

Idaho Falls Fanning Field

Sat 8/29

7:00 am-6:27 pm

1 stop9h 27m

$471

Quickest round-trip

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Fri 10/30

6:59 am-12:20 pm

1 stop7h 21m

Idaho Falls Fanning Field

Sat 11/7

1:58 pm-11:00 pm

1 stop7h 02m

$501

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 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

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

You could potentially save up to 64% 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 26m
Direct flights	None

The fastest flight from Washington, D.C. to Idaho Falls takes 6h 26m

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.

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Frequently asked questions about flying from Washington, D.C. to Idaho Falls

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 26m, 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 2 operators available for flights from Washington, D.C. to Idaho Falls Fanning Field Airport as of June 2026.
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 (58% of total bookings). The next most popular airline is American Airlines (42%).

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
United Airlines	PriceFrom $333	Free Cancellation	Rating 7.4 9,868 reviews		Search United Airlines flights
Alaska Airlines	PriceFrom $433	Free Cancellation	Rating 7.9 12,554 reviews		Search Alaska 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.

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Airports servicing Idaho

Boise Air Term. Gowen Fld Airport

Lewiston Nez Perce Rgnl Airport

Pocatello Airport

Hailey Sun Valley-Friedman Airport

Twin Falls Joslin Airport

Cheap flights from Washington, D.C. to Idaho Falls from $104

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 8/17. 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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Delta flights from Washington, D.C. to Idaho Falls

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

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

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

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See travel insights to Idaho Falls from

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

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

What is the cheapest airline that flies 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?

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

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

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

How long does it take to fly to Idaho Falls?

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

Frequently asked questions about flying 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?

An easier way to manage your Idaho Falls trip

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List of cabin classes available on flights landing in Idaho Falls. Availability may vary depending on flight origin and airline.

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