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

Flights via Denver (DEN) offer the lowest average round-trip price of $841.

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

Flights connecting via Denver (DEN) have the shortest average one-way travel time: 6h 30m.

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

Denver (DEN) has the shortest average layover time for this route: 1h 21m.

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

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

What airlines fly to Washington, D.C.?

United Airlines, Delta and American Airlines are the top three most popular airlines that fly to Washington, D.C. from Idaho Falls according to our data. United Airlines is the first choice among our users, with 77% of people opting to fly with this airline when traveling to Washington, D.C.. Keep in mind that there are 3 different airlines that fly to Washington, D.C. on a routine basis, so you have a few additional options to choose from.

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

Dallas (DFW) 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 Idaho Falls Fanning Field Airport to Washington, D.C.?

Prices for flights from Idaho Falls Fanning Field Airport to Washington, D.C. are updated daily.

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

As of February 2026, there are 3 operators available to choose from for flights from Idaho Falls Fanning Field Airport to Washington, D.C..

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

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Idaho Falls Fanning Field Airport to Washington, D.C..

What documentation or ID do you need to fly to Washington, D.C.?

The travel and health documents you'll need for your trip to Washington, D.C. 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 Washington, D.C.. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$155 Cheap Flights from Idaho Falls to Washington, D.C. in 2026

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

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

4:23 pm - 12:37 am

IDA

IAD

6h 14m

1 stop

6:30 am - 1:24 pm

IAD

IDA

8h 54m

1 stop

$359United Airlines

Sat, Jun 27 - Sat, Jul 4

6:00 am - 6:11 pm

IDA

IAD

10h 11m

1 stop

7:11 pm - 4:19 pm

IAD

IDA

23h 08m

1 stop

$373Alaska Airlines

Wed, Mar 25 - Tue, Mar 31

6:00 am - 4:38 pm

IDA

IAD

8h 38m

1 stop

6:00 am - 3:26 pm

IAD

IDA

11h 26m

1 stop

$386Alaska Airlines

Wed, May 20 - Sun, May 24

4:03 pm - 6:28 am

IDA

BWI

12h 25m

2 stops

4:17 pm - 1:17 pm

BWI

IDA

23h 00m

1 stop

$406Alaska Airlines

Wed, May 20 - Sun, May 24

6:54 pm - 5:45 am

IDA

BWI

8h 51m

1 stop

7:00 am - 2:34 pm

BWI

IDA

9h 34m

1 stop

$419Delta

Wed, May 20 - Sun, May 24

4:59 pm - 5:40 am

IDA

IAD

10h 41m

1 stop

6:47 pm - 10:40 pm

IAD

IDA

29h 53m

2 stops

$423Alaska Airlines

Sat, Apr 18 - Thu, Apr 23

5:20 pm - 5:27 pm

IDA

IAD

22h 07m

2 stops

6:20 pm - 10:52 pm

IAD

IDA

30h 32m

2 stops

$424Alaska Airlines

Wed, Mar 11 - Tue, Mar 17

2:35 pm - 11:12 pm

IDA

BWI

6h 37m

1 stop

8:02 am - 1:30 pm

BWI

IDA

7h 28m

1 stop

$441United Airlines

Fri, Mar 13 - Tue, Mar 17

12:36 pm - 12:09 am

IDA

IAD

9h 33m

2 stops

6:22 am - 12:11 pm

IAD

IDA

7h 49m

1 stop

$447American Airlines

Sat, Jun 27 - Sat, Jul 4

7:48 am - 9:28 pm

IDA

DCA

11h 40m

2 stops

6:00 am - 1:13 pm

DCA

IDA

9h 13m

1 stop

$504American Airlines

Sat, Apr 18 - Thu, Apr 23

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

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

United Airlines

Jun 27

IDA4:23 pmIdaho Falls Fanning Field

6h 14m

1 stop

IAD12:37 amWashington, D.C. Dulles Intl

Jul 4

IAD6:30 amWashington, D.C. Dulles Intl

8h 54m

1 stop

IDA1:24 pmIdaho Falls Fanning Field

$359

United Airlines

Mar 13

IDA2:35 pmIdaho Falls Fanning Field

6h 37m

1 stop

BWI11:12 pmBaltimore/Washington

Mar 17

BWI8:02 amBaltimore/Washington

7h 28m

1 stop

IDA1:30 pmIdaho Falls Fanning Field

$441

United Airlines

Apr 18

IDA2:30 pmIdaho Falls Fanning Field

7h 04m

1 stop

IAD11:34 pmWashington, D.C. Dulles Intl

Apr 23

IAD10:35 pmWashington, D.C. Dulles Intl

13h 18m

1 stop

IDA9:53 amIdaho Falls Fanning Field

$467

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

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

American Airlines

Mar 3

IDA6:18 amIdaho Falls Fanning Field

12h 19m

2 stops

DCA8:37 pmWashington, D.C. Reagan-National

Mar 7

DCA1:44 pmWashington, D.C. Reagan-National

11h 40m

2 stops

IDA11:24 pmIdaho Falls Fanning Field

$415

American Airlines

Jun 27

IDA12:36 pmIdaho Falls Fanning Field

9h 33m

2 stops

IAD12:09 amWashington, D.C. Dulles Intl

Jul 4

IAD6:22 amWashington, D.C. Dulles Intl

7h 49m

1 stop

IDA12:11 pmIdaho Falls Fanning Field

$447

American Airlines

Mar 3

IDA6:18 amIdaho Falls Fanning Field

12h 19m

2 stops

DCA8:37 pmWashington, D.C. Reagan-National

Mar 7

DCA4:59 pmWashington, D.C. Reagan-National

8h 25m

1 stop

IDA11:24 pmIdaho Falls Fanning Field

$475

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Sat 6/27

4:23 pm-12:37 am

1 stop6h 14m

Washington, D.C. Dulles Intl

Sat 7/4

6:30 am-1:24 pm

1 stop8h 54m

$359

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Wed 3/25

6:00 am-6:11 pm

1 stop10h 11m

Washington, D.C. Dulles Intl

Tue 3/31

7:11 pm-4:19 pm

1 stop23h 08m

$373

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Wed 5/20

6:00 am-4:38 pm

1 stop8h 38m

Washington, D.C. Dulles Intl

Sun 5/24

6:00 am-3:26 pm

1 stop11h 26m

$386

Idaho FallsBaltimore

IDA - BWI

IDABWI

Idaho Falls Fanning Field

Wed 5/20

4:03 pm-6:28 am

2 stops12h 25m

Baltimore/Washington

Sun 5/24

4:17 pm-1:17 pm

1 stop23h 00m

$406

Idaho FallsBaltimore

IDA - BWI

IDABWI

Idaho Falls Fanning Field

Wed 5/20

6:54 pm-5:45 am

1 stop8h 51m

Baltimore/Washington

Sun 5/24

7:00 am-2:34 pm

1 stop9h 34m

$419

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Sat 4/18

4:59 pm-5:40 am

1 stop10h 41m

Washington, D.C. Dulles Intl

Thu 4/23

6:47 pm-10:40 pm

2 stops29h 53m

$423

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Wed 3/11

5:20 pm-5:27 pm

2 stops22h 07m

Washington, D.C. Dulles Intl

Tue 3/17

6:20 pm-10:52 pm

2 stops30h 32m

$424

Idaho FallsBaltimore

IDA - BWI

IDABWI

Idaho Falls Fanning Field

Fri 3/13

2:35 pm-11:12 pm

1 stop6h 37m

Baltimore/Washington

Tue 3/17

8:02 am-1:30 pm

1 stop7h 28m

$441

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Sat 6/27

12:36 pm-12:09 am

2 stops9h 33m

Washington, D.C. Dulles Intl

Sat 7/4

6:22 am-12:11 pm

1 stop7h 49m

$447

Idaho FallsWashington, D.C.

IDA - DCA

IDADCA

Idaho Falls Fanning Field

Sat 4/18

7:48 am-9:28 pm

2 stops11h 40m

Washington, D.C. Reagan-National

Thu 4/23

6:00 am-1:13 pm

1 stop9h 13m

$504

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 Idaho Falls to Washington, D.C.

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

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

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

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

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

Estimated round-trip price

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

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

Fastest flight time	6h 17m
Direct flights	None

The fastest flight from Idaho Falls to Washington, D.C. takes 6h 17m

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

Search flight deals

How far is Idaho Falls Fanning Field to Washington, D.C. by plane?
There are 1831.8 mi between Idaho Falls Fanning Field and Washington, D.C.. A reasonable flight in good conditions will take 6h 17m.
When did momondo last update prices for flights from Idaho Falls Fanning Field Airport to Washington, D.C.?
Prices for flights from Idaho Falls Fanning Field Airport to Washington, D.C. are updated daily.
How many operators does momondo search for flights from Idaho Falls Fanning Field Airport to Washington, D.C.?
As of February 2026, there are 3 operators available to choose from for flights from Idaho Falls Fanning Field Airport to Washington, D.C..
How old do you have to be to fly from Idaho Falls Fanning Field Airport to Washington, D.C.?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Idaho Falls Fanning Field Airport to Washington, D.C..
What documentation or ID do you need to fly to Washington, D.C.?
The travel and health documents you'll need for your trip to Washington, D.C. 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 Washington, D.C.. 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 Idaho Falls to Washington, D.C.?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Idaho Falls to Washington, D.C. is United Airlines (100% of total bookings).

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

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

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $194	Free Cancellation	Rating 7.9 8,215 reviews	Search Delta flights
United Airlines	PriceFrom $394	Free Cancellation	Rating 7.4 9,325 reviews	Search United Airlines flights
American Airlines	PriceFrom $500	Free Cancellation	Rating 7.2 11,320 reviews	Search American Airlines flights

Alexandria

National Harbor

Gettysburg

Arlington

Waldorf

Woodbridge

Laurel

Colonial Beach

Tysons

Silver Spring

Towson

Fredericksburg

Gaithersburg

Rockville

Manassas

Springfield

Fairfax

Linthicum Heights

Bethesda

Glen Burnie

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Idaho Falls to Washington, D.C. for you.

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

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

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

Once all potential Idaho Falls to Washington, D.C. 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 Idaho Falls to Washington, D.C. right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Idaho Falls to Washington, D.C. flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Washington, D.C. trip

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Feeling lucky

Fly into one of these airports located in Washington, D.C.

Washington, D.C. Reagan-National Airport

Washington, D.C. Dulles Intl Airport

Cheap flights from Idaho Falls to Washington, D.C. from $155

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Idaho Falls to Washington, D.C. departing on 5/23. 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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United Airlines flights from Idaho Falls to Washington, D.C.

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

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

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

momondo Fare Finder

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

See travel insights to Washington, D.C. from

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

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

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

What airlines fly to Washington, D.C.?

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

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

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

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

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

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

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

Fastest flight time

Direct flights

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

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

Traveling to a place near Washington, D.C.?

Why use momondo?

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

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

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

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

An easier way to manage your Washington, D.C. 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

Fly into one of these airports located in Washington, D.C.

Airports listed have a maximum distance of 22.4 mi from Washington, D.C.

Fly your favorite airline to Washington, D.C.

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

Cabin classes currently available on flights to Washington, D.C.

List of cabin classes available on flights landing in Washington, D.C.. Availability may vary depending on flight origin and airline.

Popular cities in the United States

Popular flights according to clicks in the last 7 days on momondo

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According to popular flight searches on momondo this year

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