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 6h 34m and 6h 35m, respectively.

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 64% 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 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.

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

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

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.

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 May 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.

$175 Cheap Flights from Washington, D.C. to Idaho Falls in 2026

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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 - 12:12 pm

DCA

IDA

7h 42m

1 stop

1:43 pm - 11:35 pm

IDA

DCA

7h 52m

1 stop

$349American Airlines

Wed, Sep 23 - Tue, Oct 6

11:50 am - 10:42 pm

BWI

IDA

12h 52m

2 stops

6:54 pm - 9:23 am

IDA

BWI

12h 29m

2 stops

$359Delta

Wed, May 27 - Sat, May 30

7:45 am - 6:20 pm

DCA

IDA

12h 35m

2 stops

7:00 pm - 10:09 am

IDA

DCA

13h 09m

2 stops

$370Delta

Wed, Aug 5 - Wed, Aug 12

7:50 am - 3:37 pm

BWI

IDA

9h 47m

1 stop

4:14 pm - 3:34 pm

IDA

BWI

21h 20m

1 stop

$399Alaska Airlines

Mon, Sep 7 - Mon, Sep 28

6:00 am - 3:26 pm

IAD

IDA

11h 26m

1 stop

6:00 am - 4:38 pm

IDA

IAD

8h 38m

1 stop

$399Alaska Airlines

Wed, May 27 - Sat, May 30

1:45 pm - 11:39 pm

DCA

IDA

11h 54m

2 stops

12:44 pm - 10:28 pm

IDA

DCA

7h 44m

1 stop

$404American Airlines

Tue, May 19 - Sat, May 23

6:00 am - 3:26 pm

IAD

IDA

11h 26m

1 stop

1:54 pm - 11:59 pm

IDA

IAD

8h 05m

1 stop

$409Alaska Airlines

Wed, Jun 3 - Tue, Jun 9

6:30 am - 1:25 pm

IAD

IDA

8h 55m

1 stop

4:14 pm - 12:45 am

IDA

IAD

6h 31m

1 stop

$414United Airlines

Mon, Jun 29 - Fri, Jul 3

5:00 am - 11:32 am

DCA

IDA

8h 32m

1 stop

1:44 pm - 11:59 pm

IDA

DCA

8h 15m

1 stop

$420American Airlines

Wed, Sep 9 - Wed, Sep 16

6:30 am - 1:24 pm

IAD

IDA

8h 54m

1 stop

4:10 pm - 12:40 am

IDA

IAD

6h 30m

1 stop

$422United Airlines

Wed, Sep 9 - Wed, Sep 16

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

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

American Airlines

Sep 23

DCA6:30 amWashington, D.C. Reagan-National

7h 42m

1 stop

IDA12:12 pmIdaho Falls Fanning Field

Oct 6

IDA1:43 pmIdaho Falls Fanning Field

7h 52m

1 stop

DCA11:35 pmWashington, D.C. Reagan-National

$349

American Airlines

May 19

DCA1:45 pmWashington, D.C. Reagan-National

11h 54m

2 stops

IDA11:39 pmIdaho Falls Fanning Field

May 23

IDA12:44 pmIdaho Falls Fanning Field

7h 44m

1 stop

DCA10:28 pmWashington, D.C. Reagan-National

$404

American Airlines

Sep 9

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

8h 32m

1 stop

IDA11:32 amIdaho Falls Fanning Field

Sep 16

IDA1:44 pmIdaho Falls Fanning Field

8h 15m

1 stop

DCA11:59 pmWashington, D.C. Reagan-National

$420

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

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

Alaska Airlines

Sep 7

BWI7:50 amBaltimore/Washington

9h 47m

1 stop

IDA3:37 pmIdaho Falls Fanning Field

Sep 28

IDA4:14 pmIdaho Falls Fanning Field

21h 20m

1 stop

BWI3:34 pmBaltimore/Washington

$399

Alaska Airlines

Jun 3

IAD6:00 amWashington, D.C. Dulles Intl

11h 26m

1 stop

IDA3:26 pmIdaho Falls Fanning Field

Jun 9

IDA1:54 pmIdaho Falls Fanning Field

8h 05m

1 stop

IAD11:59 pmWashington, D.C. Dulles Intl

$409

Alaska Airlines

May 27

IAD6:00 amWashington, D.C. Dulles Intl

11h 26m

1 stop

IDA3:26 pmIdaho Falls Fanning Field

May 30

IDA6:00 amIdaho Falls Fanning Field

8h 38m

1 stop

IAD4:38 pmWashington, D.C. Dulles Intl

$429

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

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Wed 9/23

6:30 am-12:12 pm

1 stop7h 42m

Idaho Falls Fanning Field

Tue 10/6

1:43 pm-11:35 pm

1 stop7h 52m

$349

BaltimoreIdaho Falls

BWI - IDA

BWIIDA

Baltimore/Washington

Wed 5/27

11:50 am-10:42 pm

2 stops12h 52m

Idaho Falls Fanning Field

Sat 5/30

6:54 pm-9:23 am

2 stops12h 29m

$359

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Wed 8/5

7:45 am-6:20 pm

2 stops12h 35m

Idaho Falls Fanning Field

Wed 8/12

7:00 pm-10:09 am

2 stops13h 09m

$370

BaltimoreIdaho Falls

BWI - IDA

BWIIDA

Baltimore/Washington

Mon 9/7

7:50 am-3:37 pm

1 stop9h 47m

Idaho Falls Fanning Field

Mon 9/28

4:14 pm-3:34 pm

1 stop21h 20m

$399

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Wed 5/27

6:00 am-3:26 pm

1 stop11h 26m

Idaho Falls Fanning Field

Sat 5/30

6:00 am-4:38 pm

1 stop8h 38m

$399

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Tue 5/19

1:45 pm-11:39 pm

2 stops11h 54m

Idaho Falls Fanning Field

Sat 5/23

12:44 pm-10:28 pm

1 stop7h 44m

$404

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Wed 6/3

6:00 am-3:26 pm

1 stop11h 26m

Idaho Falls Fanning Field

Tue 6/9

1:54 pm-11:59 pm

1 stop8h 05m

$409

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Mon 6/29

6:30 am-1:25 pm

1 stop8h 55m

Idaho Falls Fanning Field

Fri 7/3

4:14 pm-12:45 am

1 stop6h 31m

$414

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Wed 9/9

5:00 am-11:32 am

1 stop8h 32m

Idaho Falls Fanning Field

Wed 9/16

1:44 pm-11:59 pm

1 stop8h 15m

$420

Quickest round-trip

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Wed 9/9

6:30 am-1:24 pm

1 stop8h 54m

Idaho Falls Fanning Field

Wed 9/16

4:10 pm-12:40 am

1 stop6h 30m

$422

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

What is the cheapest month to fly to Idaho Falls?

If you aren’t able to travel to Idaho Falls during the month of November, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $0.

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

You could potentially save up to 2% 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 43m
Direct flights	None

The fastest flight from Washington, D.C. to Idaho Falls takes 6h 43m

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

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 43m, 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 May 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 (45% of total bookings). The next most popular airlines are American Airlines (30%) and Delta (26%).

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 9,694 reviews		Search United Airlines flights
Alaska Airlines	PriceFrom $433	Free Cancellation	Rating 7.9 12,342 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 $175

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 8/25. 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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American Airlines flights from Washington, D.C. to Idaho Falls

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

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

What is the cheapest month to fly 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

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

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Find better results for your trip to the United States

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Airlines are sorted and displayed according to clicks in the past 7 days on momondo

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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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