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

Flights via Salt Lake City (SLC) offer the lowest average round-trip price of $348.

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.?

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

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

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

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.

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 July 2026, there are 2 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.

$185 Cheap Flights from Idaho Falls to Washington, D.C. in 2026

Discover deals from 900+ travel sites with momondo.

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.

7:54 pm - 8:04 am

IDA

IAD

34h 10m

2 stops

8:59 am - 10:22 am

IAD

IDA

27h 23m

1 stop

$346Multiple Airlines

Thu, Aug 20 - Thu, Aug 27

7:00 pm - 6:20 am

IDA

BWI

9h 20m

1 stop

7:39 am - 2:35 pm

BWI

IDA

8h 56m

1 stop

$359Delta

Mon, Aug 24 - Mon, Aug 31

2:25 pm - 11:19 pm

IDA

IAD

6h 54m

1 stop

10:10 am - 3:23 pm

IAD

IDA

7h 13m

1 stop

$359United Airlines

Mon, Aug 24 - Mon, Aug 31

2:35 pm - 11:15 pm

IDA

IAD

6h 40m

1 stop

4:10 pm - 9:09 pm

IAD

IDA

6h 59m

1 stop

$359United Airlines

Thu, Nov 5 - Mon, Nov 9

1:58 pm - 11:59 pm

IDA

DCA

8h 01m

1 stop

6:30 am - 1:28 pm

DCA

IDA

8h 58m

1 stop

$359American Airlines

Thu, Sep 17 - Sun, Sep 20

1:43 pm - 11:59 pm

IDA

DCA

8h 16m

1 stop

5:00 am - 11:30 am

DCA

IDA

8h 30m

1 stop

$359American Airlines

Wed, Sep 2 - Mon, Sep 7

7:00 pm - 6:20 am

IDA

BWI

9h 20m

1 stop

7:39 am - 2:35 pm

BWI

IDA

8h 56m

1 stop

$359Delta

Fri, Aug 21 - Mon, Aug 24

4:04 pm - 12:32 am

IDA

IAD

6h 28m

1 stop

6:30 am - 1:29 pm

IAD

IDA

8h 59m

1 stop

$359United Airlines

Thu, Sep 17 - Sun, Sep 20

7:00 pm - 6:20 am

IDA

BWI

9h 20m

1 stop

12:03 pm - 10:32 pm

BWI

IDA

12h 29m

2 stops

$364Delta

Wed, Aug 26 - Tue, Sep 1

12:06 pm - 10:58 pm

IDA

DCA

8h 52m

1 stop

7:35 am - 1:09 pm

DCA

IDA

7h 34m

1 stop

$379American Airlines

Fri, Aug 21 - Mon, Aug 24

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

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

Delta

Aug 21

IDA7:00 pmIdaho Falls Fanning Field

9h 20m

1 stop

BWI6:20 amBaltimore/Washington

Aug 24

BWI7:39 amBaltimore/Washington

8h 56m

1 stop

IDA2:35 pmIdaho Falls Fanning Field

$359

Delta

Oct 26

IDA6:56 pmIdaho Falls Fanning Field

12h 23m

2 stops

IAD9:19 amWashington, D.C. Dulles Intl

Oct 30

IAD6:13 amWashington, D.C. Dulles Intl

8h 09m

1 stop

IDA12:22 pmIdaho Falls Fanning Field

$364

Delta

Oct 26

IDA6:56 pmIdaho Falls Fanning Field

12h 23m

2 stops

IAD9:19 amWashington, D.C. Dulles Intl

Oct 30

IAD7:23 amWashington, D.C. Dulles Intl

12h 53m

2 stops

IDA6:16 pmIdaho Falls Fanning Field

$370

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

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

Alaska Airlines

Sep 5

IDA3:57 pmIdaho Falls Fanning Field

21h 43m

1 stop

BWI3:40 pmBaltimore/Washington

Sep 12

BWI4:43 pmBaltimore/Washington

22h 41m

1 stop

IDA1:24 pmIdaho Falls Fanning Field

$379

Alaska Airlines

Sep 9

IDA2:01 pmIdaho Falls Fanning Field

7h 58m

1 stop

IAD11:59 pmWashington, D.C. Dulles Intl

Sep 11

IAD5:57 pmWashington, D.C. Dulles Intl

23h 23m

1 stop

IDA3:20 pmIdaho Falls Fanning Field

$419

Alaska Airlines

Nov 10

IDA6:04 amIdaho Falls Fanning Field

9h 08m

1 stop

BWI5:12 pmBaltimore/Washington

Nov 14

BWI7:00 amBaltimore/Washington

10h 17m

1 stop

IDA3:17 pmIdaho Falls Fanning Field

$449

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

Cheapest round-trip

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Thu 8/20

7:54 pm-8:04 am

2 stops34h 10m

Washington, D.C. Dulles Intl

Thu 8/27

8:59 am-10:22 am

1 stop27h 23m

$346

Idaho FallsBaltimore

IDA - BWI

IDABWI

Idaho Falls Fanning Field

Mon 8/24

7:00 pm-6:20 am

1 stop9h 20m

Baltimore/Washington

Mon 8/31

7:39 am-2:35 pm

1 stop8h 56m

$359

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Mon 8/24

2:25 pm-11:19 pm

1 stop6h 54m

Washington, D.C. Dulles Intl

Mon 8/31

10:10 am-3:23 pm

1 stop7h 13m

$359

Quickest round-trip

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Thu 11/5

2:35 pm-11:15 pm

1 stop6h 40m

Washington, D.C. Dulles Intl

Mon 11/9

4:10 pm-9:09 pm

1 stop6h 59m

$359

Idaho FallsWashington, D.C.

IDA - DCA

IDADCA

Idaho Falls Fanning Field

Thu 9/17

1:58 pm-11:59 pm

1 stop8h 01m

Washington, D.C. Reagan-National

Sun 9/20

6:30 am-1:28 pm

1 stop8h 58m

$359

Idaho FallsWashington, D.C.

IDA - DCA

IDADCA

Idaho Falls Fanning Field

Wed 9/2

1:43 pm-11:59 pm

1 stop8h 16m

Washington, D.C. Reagan-National

Mon 9/7

5:00 am-11:30 am

1 stop8h 30m

$359

Idaho FallsBaltimore

IDA - BWI

IDABWI

Idaho Falls Fanning Field

Fri 8/21

7:00 pm-6:20 am

1 stop9h 20m

Baltimore/Washington

Mon 8/24

7:39 am-2:35 pm

1 stop8h 56m

$359

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Thu 9/17

4:04 pm-12:32 am

1 stop6h 28m

Washington, D.C. Dulles Intl

Sun 9/20

6:30 am-1:29 pm

1 stop8h 59m

$359

Idaho FallsBaltimore

IDA - BWI

IDABWI

Idaho Falls Fanning Field

Wed 8/26

7:00 pm-6:20 am

1 stop9h 20m

Baltimore/Washington

Tue 9/1

12:03 pm-10:32 pm

2 stops12h 29m

$364

Idaho FallsWashington, D.C.

IDA - DCA

IDADCA

Idaho Falls Fanning Field

Fri 8/21

12:06 pm-10:58 pm

1 stop8h 52m

Washington, D.C. Reagan-National

Mon 8/24

7:35 am-1:09 pm

1 stop7h 34m

$379

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

What is the cheapest month to fly to Washington, D.C.?

The month of January is, on average, the cheapest month to fly to Washington, D.C. from Idaho Falls, with most prices found around $0. If you’re not able to fly to Washington, D.C. in January, then February is your next best option. Flight prices from Idaho Falls to Washington, D.C. during February average around $417.

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

You could potentially save up to 45% 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 03m
Direct flights	None

The fastest flight from Idaho Falls to Washington, D.C. takes 6h 03m

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

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

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 03m.
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 July 2026, there are 2 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 (54% of total bookings). The next most popular airline is Delta (46%).

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
United Airlines	PriceFrom $446	Free Cancellation	Rating 7.4 10,046 reviews		Search United Airlines flights
American Airlines	PriceFrom $620	Free Cancellation	Rating 7.1 11,841 reviews		Search American Airlines flights

Alexandria

National Harbor

Arlington

Gettysburg

Waldorf

Laurel

Woodbridge

Fredericksburg

Gaithersburg

Linthicum Heights

Rockville

Silver Spring

Towson

Colonial Beach

Springfield

Fairfax

Tysons

Bethesda

Edgewood

College Park

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.

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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 $185

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 9/9. 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 Idaho Falls to Washington, D.C.

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

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

Our best Alaska 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.

What is the cheapest month to fly 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.?

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

Fastest flight time

Direct flights

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

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?

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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