What are the cheapest airlines flying from Idaho Falls to Washington, D.C. round-trip?

Alaska Airlines, at $380, was found to be the cheapest airline from Idaho Falls to Washington, D.C..Alternate airlines to your destination round-trip include Delta and United Airlines. Alaska Airlines is priced at 44% lower than the current average price of a flight leaving 3 months from now.

What are the cheapest airlines to fly from Idaho Falls to Washington, D.C. one-way?

$191 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on Hawaiian Airlines and American Airlines, with prices starting from $309 and $359, respectively.

What is the cheapest day to fly from Idaho Falls to Washington, D.C.?

Travelers seeking maximum savings on their Idaho Falls to Washington, D.C. flight should consider departing on Thursday at noon when fares are most often at their lowest. Friday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

What are the most popular routes from Idaho Falls to Washington, D.C.?

When deciding which route to take from Idaho Falls to Washington, D.C. consider Idaho Falls Fanning Field - Washington, D.C. Dulles Intl, Idaho Falls Fanning Field - Washington, D.C. Reagan-National or Idaho Falls Fanning Field - Baltimore/Washington as they are the most popular.

What is the cheapest day to fly round-trip from Idaho Falls to Washington, D.C.?

Flights from Idaho Falls to Washington, D.C. are found to be more expensive on Wednesday. This shouldn't discourage you from searching as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Washington, D.C..

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

October is one of the best times of the year to fly to Washington, D.C. from Idaho Falls. Prices for October average $686 per person but you can even find prices for as low as $550. The most expensive prices can be found in the month of March. Opting for a October flight can save you 24% on your journey compared to booking in March

Most accurate provider : When it comes to deals on Idaho Falls-Washington, D.C. flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Idaho Falls-Washington, D.C. flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Idaho Falls-Washington, D.C. flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Idaho Falls-Washington, D.C. flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Idaho Falls-Washington, D.C. flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

What airport do you fly from for flights from Idaho Falls to Washington, D.C.?

Located just 3.8 mi from the city center, Idaho Falls Fanning Field is the airport most travelers will use when flying to Washington, D.C. from Idaho Falls. Booking flights from Fanning Field (IDA) to Washington, D.C. should be relatively easy as there are 0 daily outbound flights to Washington, D.C. from 2 different airlines.

Can I find deals for flights from Idaho Falls to Washington, D.C. that include hotel bookings?

Yes. In addition to deals on Idaho Falls to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Idaho Falls to Washington, D.C.?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Idaho Falls to Washington, D.C..

Can I find deals for business class flights from Idaho Falls to Washington, D.C.?

Yes. Cheapflights offers flight deals from Idaho Falls to Washington, D.C. by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$191+ Flights from Idaho Falls to Washington, D.C.

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Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

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Cheap flight deals from Idaho Falls to Washington, D.C.

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$380 (Alaska Airlines)
One-way from	$191 (Delta)
Popular in	March
Cheapest in	October
Average price	$725

Provider with most accurate pricing for Idaho Falls Fanning Field-Washington, D.C. (WAS) flight deals.

Search Deals

Provider most trusted by Cheapflights users for Idaho Falls Fanning Field-Washington, D.C. (WAS) flights.

Search Deals

From Idaho Falls Fanning Field to Washington, D.C. (WAS)

Search Deals

One-way flight from Idaho Falls Fanning Field to Washington, D.C. (WAS)

Search Deals

Highest demand for flights based on searches. 13% potential increase in price ($103 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($19 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in April 2025

Search Deals

Find flight deals from Idaho Falls to Washington, D.C.

Cheapest flights from Idaho Falls to Washington, D.C.
Explore the most affordable flight options available from Idaho Falls to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 11, 2025.

Wed 5/286:00 amIDA - BWI

1 stop10h 05mAlaska Airlines

Tue 6/37:49 amBWI - IDA

1 stop9h 51mAlaska Airlines

Deal found 4/9

$380

Tue 5/276:50 pmIDA - BWI

1 stop8h 50mDelta

Wed 6/46:55 amBWI - IDA

1 stop6h 55mDelta

Deal found 4/9

$381

Wed 5/284:20 pmIDA - IAD

1 stop13h 16mAlaska Airlines

Wed 6/46:15 pmIAD - IDA

1 stop23h 25mAlaska Airlines

Deal found 4/9

$394

Sun 5/256:00 amIDA - DCA

1 stop8h 44mAlaska Airlines

Tue 6/38:00 amDCA - IDA

1 stop9h 40mAlaska Airlines

Deal found 4/9

$394

Wed 4/301:10 pmIDA - IAD

1 stop8h 21mDelta

Sat 5/37:35 amIAD - IDA

1 stop6h 51mDelta

Deal found 4/9

$395

Wed 5/286:00 amIDA - DCA

1 stop8h 00mDelta

Tue 6/35:15 pmDCA - IDA

1 stop7h 36mDelta

Deal found 4/9

$395

Sun 5/42:40 pmIDA - BWI

1 stop6h 37mUnited Airlines

Thu 5/810:00 amBWI - IDA

1 stop7h 25mUnited Airlines

Deal found 4/10

$450

Tue 4/296:50 amIDA - IAD

1 stop6h 42mUnited Airlines

Thu 5/810:10 amIAD - IDA

1 stop7h 15mUnited Airlines

Deal found 4/9

$453

Fri 5/27:43 amIDA - BWI

2 stops12h 36mAmerican Airlines

Mon 5/53:29 pmBWI - IDA

1 stop7h 48mAmerican Airlines

Deal found 4/11

$455

Fri 5/212:59 pmIDA - IAD

1 stop7h 43mAmerican Airlines

Mon 5/56:18 amIAD - IDA

1 stop8h 11mAmerican Airlines

Deal found 4/11

$469

Fri 5/27:43 amIDA - DCA

2 stops12h 20mAmerican Airlines

Mon 5/56:45 amDCA - IDA

1 stop7h 44mAmerican Airlines

Deal found 4/11

$474

Sun 5/255:00 amIDA - DCA

1 stop8h 05mUnited Airlines

Sat 6/74:17 pmDCA - IDA

1 stop8h 34mUnited Airlines

Deal found 4/9

$485

Best flights from Idaho Falls to Washington, D.C.
Discover carefully curated flight deals from Idaho Falls to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 11, 2025.

Wed 5/286:00 amIDA - BWI

1 stop10h 05mAlaska Airlines

Tue 6/37:49 amBWI - IDA

1 stop9h 51mAlaska Airlines

Deal found 4/9

$380

Tue 5/276:50 pmIDA - BWI

1 stop8h 50mDelta

Wed 6/46:55 amBWI - IDA

1 stop6h 55mDelta

Deal found 4/9

$381

Sun 5/42:40 pmIDA - BWI

1 stop6h 37mUnited Airlines

Thu 5/810:00 amBWI - IDA

1 stop7h 25mUnited Airlines

Deal found 4/10

$450

Fri 5/27:43 amIDA - BWI

2 stops12h 36mAmerican Airlines

Mon 5/53:29 pmBWI - IDA

1 stop7h 48mAmerican Airlines

Deal found 4/11

$455

Tue 4/296:00 amIDA - DCA

1 stop8h 38mHawaiian Airlines

Tue 5/68:00 amDCA - IDA

1 stop9h 58mHawaiian Airlines

Deal found 4/9

$632

Wed 5/286:00 amIDA - IAD

1 stop9h 15mAlaska Airlines

Thu 6/59:00 amIAD - IDA

1 stop8h 40mAlaska Airlines

Deal found 4/9

$394

Wed 4/301:10 pmIDA - IAD

1 stop8h 21mDelta

Sat 5/37:35 amIAD - IDA

1 stop6h 51mDelta

Deal found 4/9

$395

Sun 5/256:00 amIDA - DCA

1 stop8h 44mAlaska Airlines

Tue 6/38:00 amDCA - IDA

1 stop9h 40mAlaska Airlines

Deal found 4/9

$394

Wed 5/286:00 amIDA - DCA

1 stop8h 00mDelta

Tue 6/35:15 pmDCA - IDA

1 stop7h 36mDelta

Deal found 4/9

$395

Tue 4/297:43 amIDA - IAD

2 stops14h 13mAmerican Airlines

Tue 5/65:02 amIAD - IDA

2 stops9h 27mAmerican Airlines

Deal found 4/9

$473

Fri 5/210:53 amIDA - IAD

1 stop8h 32mUnited Airlines

Wed 5/710:10 amIAD - IDA

1 stop7h 15mUnited Airlines

Deal found 4/9

$485

Sun 5/255:00 amIDA - DCA

1 stop8h 05mUnited Airlines

Sat 6/74:17 pmDCA - IDA

1 stop8h 34mUnited Airlines

Deal found 4/9

$485

Last-minute flights from Idaho Falls to Washington, D.C.
Discover last-minute flight deals from Idaho Falls to Washington, D.C.. Data last updated April 11, 2025 and is based on user searches.

Mon 4/214:15 pmIDA - BWI

2 stops15h 39mUnited Airlines

Thu 4/248:00 amBWI - IDA

1 stop9h 21mUnited Airlines

Deal found 4/10

$794

Mon 4/212:20 pmIDA - IAD

1 stop6h 54mUnited Airlines

Thu 4/248:30 amIAD - IDA

1 stop8h 51mUnited Airlines

Deal found 4/10

$816

Mon 4/216:50 amIDA - DCA

1 stop6h 11mUnited Airlines

Thu 4/244:15 pmDCA - IDA

1 stop6h 52mUnited Airlines

Deal found 4/10

$1,677

Tue 4/297:43 amIDA - IAD

2 stops14h 13mAmerican Airlines

Tue 5/65:02 amIAD - IDA

2 stops9h 27mAmerican Airlines

Deal found 4/9

$473

Wed 4/301:10 pmIDA - IAD

1 stop8h 21mDelta

Mon 5/57:35 amIAD - IDA

1 stop6h 51mDelta

Deal found 4/9

$395

Fri 5/27:43 amIDA - BWI

2 stops12h 36mAmerican Airlines

Mon 5/53:29 pmBWI - IDA

1 stop7h 48mAmerican Airlines

Deal found 4/11

$455

Fri 5/210:53 amIDA - IAD

1 stop8h 32mUnited Airlines

Wed 5/710:10 amIAD - IDA

1 stop7h 15mUnited Airlines

Deal found 4/9

$485

Sun 5/42:40 pmIDA - BWI

1 stop6h 37mUnited Airlines

Thu 5/810:00 amBWI - IDA

1 stop7h 25mUnited Airlines

Deal found 4/10

$450

Sun 5/256:00 amIDA - DCA

1 stop8h 44mAlaska Airlines

Tue 6/38:00 amDCA - IDA

1 stop9h 40mAlaska Airlines

Deal found 4/9

$394

Sun 5/255:00 amIDA - DCA

1 stop8h 05mUnited Airlines

Sat 6/74:17 pmDCA - IDA

1 stop8h 34mUnited Airlines

Deal found 4/9

$485

Tue 5/276:50 pmIDA - BWI

1 stop8h 50mDelta

Wed 6/46:55 amBWI - IDA

1 stop6h 55mDelta

Deal found 4/9

$381

Wed 5/286:00 amIDA - BWI

1 stop10h 05mAlaska Airlines

Tue 6/37:49 amBWI - IDA

1 stop9h 51mAlaska Airlines

Deal found 4/9

$380

One-way flights from Idaho Falls to Washington, D.C.
Search for one-way flight options from Idaho Falls to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated April 11, 2025.

Sat 5/1012:55 pmIDA - BWI

1 stop8h 41mDelta

Deal found 4/10

$191

Sat 5/1012:55 pmIDA - IAD

1 stop8h 58mDelta

Deal found 4/10

$198

Sat 6/146:00 amIDA - DCA

1 stop8h 34mDelta

Deal found 4/10

$198

Sat 5/106:00 amIDA - DCA

1 stop8h 38mHawaiian Airlines

Deal found 4/10

$309

Sun 6/151:51 pmIDA - IAD

1 stop6h 48mAmerican Airlines

Deal found 4/10

$359

Sun 6/151:51 pmIDA - DCA

1 stop9h 00mAmerican Airlines

Deal found 4/10

$381

Sat 5/105:00 amIDA - BWI

3 stops31h 16mUnited Airlines

Deal found 4/10

$434

Sat 5/105:00 amIDA - IAD

3 stops14h 24mUnited Airlines

Deal found 4/10

$533

Sat 6/147:00 amIDA - BWI

2 stops11h 51mAmerican Airlines

Deal found 4/10

$699

Sun 6/155:58 pmIDA - DCA

2 stops12h 59mUnited Airlines

Deal found 4/10

$832

Cheapflights 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 FallsBaltimore

IDA - BWI

IDABWI

Idaho Falls Fanning Field

Wed 5/28

6:00 am-6:05 pm

1 stop10h 05m

Baltimore/Washington

Tue 6/3

7:49 am-3:40 pm

1 stop9h 51m

$380

Idaho FallsBaltimore

IDA - BWI

IDABWI

Idaho Falls Fanning Field

Tue 5/27

6:50 pm-5:40 am

1 stop8h 50m

Baltimore/Washington

Wed 6/4

6:55 am-11:50 am

1 stop6h 55m

$381

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Wed 5/28

6:00 am-5:15 pm

1 stop9h 15m

Washington, D.C. Dulles Intl

Thu 6/5

9:00 am-3:40 pm

1 stop8h 40m

$394

Idaho FallsWashington, D.C.

IDA - DCA

IDADCA

Idaho Falls Fanning Field

Sun 5/25

6:00 am-4:44 pm

1 stop8h 44m

Washington, D.C. Reagan-National

Tue 6/3

8:00 am-3:40 pm

1 stop9h 40m

$394

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Wed 4/30

1:10 pm-11:31 pm

1 stop8h 21m

Washington, D.C. Dulles Intl

Mon 5/5

7:35 am-12:26 pm

1 stop6h 51m

$395

Idaho FallsWashington, D.C.

IDA - DCA

IDADCA

Idaho Falls Fanning Field

Wed 5/28

6:00 am-4:00 pm

1 stop8h 00m

Washington, D.C. Reagan-National

Tue 6/3

5:15 pm-10:51 pm

1 stop7h 36m

$395

Idaho FallsBaltimore

IDA - BWI

IDABWI

Idaho Falls Fanning Field

Sun 5/4

2:40 pm-11:17 pm

1 stop6h 37m

Baltimore/Washington

Thu 5/8

10:00 am-3:25 pm

1 stop7h 25m

$450

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Tue 4/29

6:50 am-3:32 pm

1 stop6h 42m

Washington, D.C. Dulles Intl

Thu 5/8

10:10 am-3:25 pm

1 stop7h 15m

$453

Idaho FallsBaltimore

IDA - BWI

IDABWI

Idaho Falls Fanning Field

Fri 5/2

7:43 am-10:19 pm

2 stops12h 36m

Baltimore/Washington

Mon 5/5

3:29 pm-9:17 pm

1 stop7h 48m

$455

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Tue 4/29

7:43 am-11:56 pm

2 stops14h 13m

Washington, D.C. Dulles Intl

Tue 5/6

5:02 am-12:29 pm

2 stops9h 27m

$473

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/10

Showing 1-10 of 23 results

Compare providers for flights from Idaho Falls to Washington, D.C.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Idaho Falls to Washington, D.C. in April.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Idaho Falls-Washington, D.C. flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Idaho Falls-Washington, D.C. flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Idaho Falls-Washington, D.C. flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Idaho Falls-Washington, D.C. flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Idaho Falls-Washington, D.C. flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Idaho Falls to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Idaho Falls with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Idaho Falls to Washington, D.C.

What is the cheapest month to book a flight from Idaho Falls to Washington, D.C.?

Currently, August is the cheapest month in which you can book a flight from Idaho Falls to Washington, D.C. (average of $241). Flying from Idaho Falls to Washington, D.C. in March is currently the most expensive (average of $290). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IDA to WAS?

One of the essential ways to save on airfare from Idaho Falls to Washington, D.C. is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight at noon could potentially save you up to 9% on airfare.

Rainfall in Washington, D.C. by month

In terms of precipitation, rainfall in Washington, D.C. ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. when rainfall is around 2.6 in.

Temperature in Washington, D.C. by month

If weather is an important factor for your trip to Washington, D.C., use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

Reviews of airlines servicing Washington, D.C.

To help decide which airline to fly from Idaho Falls to Washington, D.C., see what other customers have to say about Alaska Airlines, Delta and Hawaiian Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Alaska Airlines

8.0

Very good

9,851 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Alaska Airlines

8.0

Very good

9,851 reviews

Alaska Airlines

8.0

Very good

9,851 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Delta

8.0

Very good

7,910 reviews

Alaska Airlines

8.0

Very good

9,851 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Hawaiian Airlines

7.9

Good

2,366 reviews

Alaska Airlines

8.0

Very good

9,851 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

United Airlines

7.4

Good

8,636 reviews

Alaska Airlines

8.0

Very good

9,851 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

American Airlines

7.2

Good

10,000 reviews

Alaska Airlines

8.0

Very good

9,851 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Related info for your journey

What airport do you fly from for flights from Idaho Falls to Washington, D.C.?
Located just 3.8 mi from the city center, Idaho Falls Fanning Field is the airport most travelers will use when flying to Washington, D.C. from Idaho Falls. Booking flights from Fanning Field (IDA) to Washington, D.C. should be relatively easy as there are 0 daily outbound flights to Washington, D.C. from 2 different airlines.
What are the cheapest airlines flying from Idaho Falls to Washington, D.C. round-trip?
Alaska Airlines, at $380, was found to be the cheapest airline from Idaho Falls to Washington, D.C..Alternate airlines to your destination round-trip include Delta and United Airlines. Alaska Airlines is priced at 44% lower than the current average price of a flight leaving 3 months from now.
What are the cheapest airlines to fly from Idaho Falls to Washington, D.C. one-way?
$191 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on Hawaiian Airlines and American Airlines, with prices starting from $309 and $359, respectively.
What are the most popular routes from Idaho Falls to Washington, D.C.?
When deciding which route to take from Idaho Falls to Washington, D.C. consider Idaho Falls Fanning Field - Washington, D.C. Dulles Intl, Idaho Falls Fanning Field - Washington, D.C. Reagan-National or Idaho Falls Fanning Field - Baltimore/Washington as they are the most popular.
Can I find deals for flights from Idaho Falls to Washington, D.C. that include hotel bookings?
Yes. In addition to deals on Idaho Falls to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Idaho Falls to Washington, D.C.?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Idaho Falls to Washington, D.C..
Can I find deals for business class flights from Idaho Falls to Washington, D.C.?
Yes. Cheapflights offers flight deals from Idaho Falls to Washington, D.C. by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Idaho Falls to Washington, D.C.?
Currently, August is the cheapest month in which you can book a flight from Idaho Falls to Washington, D.C. (average of $241). Flying from Idaho Falls to Washington, D.C. in March is currently the most expensive (average of $290). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Browse thousands of different options on Cheapflights for your next trip

Top 2 airlines flying from Idaho Falls to Washington, D.C.

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$369	Average$666	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$394	Average$799	FlexibilityNo cancel fee	On-time69%

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$191+ Cheap flights from Idaho Falls (IDA) to Washington, D.C. (WAS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/10. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Idaho Falls to Washington, D.C. with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Idaho Falls to Washington, D.C.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Idaho Falls to Washington, D.C.

Cheapest flights from Idaho Falls to Washington, D.C.Explore the most affordable flight options available from Idaho Falls to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 11, 2025.

Explore the most affordable flight options available from Idaho Falls to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 11, 2025.

Cheapflights Fare Finder

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

Compare providers for flights from Idaho Falls to Washington, D.C.

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Idaho Falls to Washington, D.C. in April.

Best time to book a flight from Idaho Falls to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Idaho Falls with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Idaho Falls to Washington, D.C.

What is the cheapest month to book a flight from Idaho Falls to Washington, D.C.?

What is the cheapest time of day to fly from IDA to WAS?

Find hourly flight availability from Idaho Falls to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 11, 2025.

Rainfall in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average rainfall totals by month.

Temperature in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average temperature totals by month.

Reviews of airlines servicing Washington, D.C.

To help decide which airline to fly from Idaho Falls to Washington, D.C., see what other customers have to say about Alaska Airlines, Delta and Hawaiian Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Idaho Falls to Washington, D.C.. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly from for flights from Idaho Falls to Washington, D.C.?

What are the cheapest airlines flying from Idaho Falls to Washington, D.C. round-trip?

What are the cheapest airlines to fly from Idaho Falls to Washington, D.C. one-way?

What are the most popular routes from Idaho Falls to Washington, D.C.?

Can I find deals for flights from Idaho Falls to Washington, D.C. that include hotel bookings?

How can I find direct flights from Idaho Falls to Washington, D.C.?

Can I find deals for business class flights from Idaho Falls to Washington, D.C.?

What is the cheapest month to book a flight from Idaho Falls to Washington, D.C.?

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Alternative routes for Idaho Falls to Washington, D.C.

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Top 2 airlines flying from Idaho Falls to Washington, D.C.

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Cheapest flights from Idaho Falls to Washington, D.C.
Explore the most affordable flight options available from Idaho Falls to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 11, 2025.