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Washington, D.C.

$198+ 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 2/7. Fares are subject to change and may not be available on all flights or dates of travel.
IDA — WAS
Jan 21 — Jan 281
Tue 1/21
Tue 1/28
1 adult, Economy
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Cheap flight deals from Idaho Falls to Washington, D.C.

Discover tips and strategies to find the most affordable flight options for your journey from Idaho Falls (IDA) to Washington, D.C. (WAS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 16, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$400
(American Airlines)

One-way from

$198
(Delta)

Popular in

July

Cheapest in

October
Provider with most accurate pricing for Idaho Falls Fanning Field-Washington, D.C. (WAS) flight deals.
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Provider most trusted by Cheapflights users for Idaho Falls Fanning Field-Washington, D.C. (WAS) flights.
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From Idaho Falls Fanning Field to Washington, D.C. (WAS)
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One-way flight from Idaho Falls Fanning Field to Washington, D.C. (WAS)
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High demand for flights, 6% potential price rise
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Best time to find cheap flights, 2% potential price drop
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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 January 16, 2025.

This American Airlines deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/17:31 amIDA - IAD
2 stops13h 02mAmerican Airlines
Wed 3/56:12 amIAD - IDA
1 stop8h 05mAmerican Airlines
Deal found 1/14$400
This Alaska Airlines deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/18:00 amIDA - IAD
1 stop7h 48mAlaska Airlines
Wed 3/57:00 amIAD - IDA
1 stop10h 30mAlaska Airlines
Deal found 1/14$423
This American Airlines deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/17:31 amIDA - DCA
2 stops11h 08mAmerican Airlines
Wed 3/55:00 amDCA - IDA
1 stop9h 17mAmerican Airlines
Deal found 1/14$432
This United deal was found by Cheapflights users on 1/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/95:48 pmIDA - BWI
1 stop9h 12mUnited Airlines
Tue 3/254:00 pmBWI - IDA
1 stop7h 06mUnited Airlines
Deal found 1/16$467
This Delta deal was found by Cheapflights users on 1/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/36:58 pmIDA - BWI
2 stops13h 54mDelta
Wed 2/57:15 amBWI - IDA
1 stop7h 15mDelta
Deal found 1/16$511
This United Airlines deal was found by Cheapflights users on 1/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/32:28 pmIDA - IAD
1 stop7h 02mUnited Airlines
Wed 2/510:05 amIAD - IDA
1 stop9h 04mUnited Airlines
Deal found 1/15$515
This Mytrip deal was found by Cheapflights users on 1/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/289:37 pmIDA - BWI
3 stops24h 55mMultiple Airlines
Sun 3/303:13 pmBWI - IDA
3 stops28h 24mMultiple Airlines
Deal found 1/16$535
This Delta deal was found by Cheapflights users on 1/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/36:58 pmIDA - IAD
2 stops12h 10mDelta
Wed 2/53:05 pmIAD - IDA
2 stops9h 39mDelta
Deal found 1/16$539
This Alaska Airlines deal was found by Cheapflights users on 1/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/314:04 pmIDA - DCA
1 stop22h 25mAlaska Airlines
Tue 2/45:29 pmDCA - IDA
1 stop23h 58mAlaska Airlines
Deal found 1/16$662
This Delta deal was found by Cheapflights users on 1/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/316:57 pmIDA - DCA
2 stops13h 28mDelta
Tue 2/45:10 pmDCA - IDA
1 stop7h 34mDelta
Deal found 1/16$668
This American Airlines deal was found by Cheapflights users on 1/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/3112:55 pmIDA - BWI
1 stop8h 32mAmerican Airlines
Tue 2/46:03 amBWI - IDA
1 stop8h 22mAmerican Airlines
Deal found 1/16$675
This United Airlines deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/16:30 amIDA - DCA
2 stops15h 23mUnited Airlines
Wed 3/56:25 amDCA - IDA
3 stops16h 42mUnited Airlines
Deal found 1/14$675

Find flights from Idaho Falls to Washington, D.C. within your budget

Customize your flight search to find flights from Idaho Falls to Washington, D.C. that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 16, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Sat 3/1

7:31 am-10:33 pm

2 stops13h 02m

Washington, D.C. Dulles Intl

Wed 3/5

6:12 am-12:17 pm

1 stop8h 05m

$400

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Sat 3/1

8:00 am-5:48 pm

1 stop7h 48m

Washington, D.C. Dulles Intl

Wed 3/5

7:00 am-3:30 pm

1 stop10h 30m

$423

Idaho FallsWashington, D.C.

IDA - DCA

IDADCA

Idaho Falls Fanning Field

Sat 3/1

7:31 am-8:39 pm

2 stops11h 08m

Washington, D.C. Reagan-National

Wed 3/5

5:00 am-12:17 pm

1 stop9h 17m

$432

Idaho FallsBaltimore

IDA - BWI

IDABWI

Idaho Falls Fanning Field

Sun 3/9

5:48 pm-5:00 am

1 stop9h 12m

Baltimore/Washington

Wed 3/26

4:00 pm-9:06 pm

1 stop7h 06m

$467

Idaho FallsBaltimore

IDA - BWI

IDABWI

Idaho Falls Fanning Field

Mon 2/3

6:58 pm-10:52 am

2 stops13h 54m

Baltimore/Washington

Wed 2/5

7:15 am-12:30 pm

1 stop7h 15m

$511

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Mon 2/3

2:28 pm-11:30 pm

1 stop7h 02m

Washington, D.C. Dulles Intl

Wed 2/5

10:05 am-5:09 pm

1 stop9h 04m

$515

Idaho FallsBaltimore

IDA - BWI

IDABWI

Idaho Falls Fanning Field

Fri 3/28

9:37 pm-12:32 am

3 stops24h 55m

Baltimore/Washington

Sun 3/30

3:13 pm-5:37 pm

3 stops28h 24m

$535

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Mon 2/3

6:58 pm-9:08 am

2 stops12h 10m

Washington, D.C. Dulles Intl

Wed 2/5

3:05 pm-10:44 pm

2 stops9h 39m

$539

Idaho FallsWashington, D.C.

IDA - DCA

IDADCA

Idaho Falls Fanning Field

Fri 1/31

4:04 pm-4:29 pm

1 stop22h 25m

Washington, D.C. Reagan-National

Tue 2/4

5:29 pm-3:27 pm

1 stop23h 58m

$662

Idaho FallsWashington, D.C.

IDA - DCA

IDADCA

Idaho Falls Fanning Field

Fri 1/31

6:57 pm-10:25 am

2 stops13h 28m

Washington, D.C. Reagan-National

Tue 2/4

5:10 pm-10:44 pm

1 stop7h 34m

$668

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/14

Showing 1-10 of 24 results
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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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust 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.

Travel insights for flights from Idaho Falls to Washington, D.C.

Get recent, data-driven insights about flights from Idaho Falls to Washington, D.C. including ideal travel times, pricing trends, and more.

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?

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 January 16, 2025.

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

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

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

Get insights into the airlines that provide service to Washington, D.C.. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Washington, D.C.. Reviews last updated January 16, 2025.
To help decide which airline to fly from Idaho Falls to Washington, D.C., see what other customers have to say about United Airlines, American Airlines and Alaska 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
9,681 reviews

Food

7.1

Entertainment

7.1

Crew

8.5

Boarding

8.2

Overall

8.0

Comfort

7.9

Reviews

1 / 10

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Alaska Airlines
8.0
Very good
9,681 reviews
Alaska Airlines
8.0
Very good
9,681 reviews

Food

7.1

Entertainment

7.1

Crew

8.5

Boarding

8.2

Overall

8.0

Comfort

7.9

Reviews

1 / 10

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Delta
8.0
Very good
8,511 reviews
Alaska Airlines
8.0
Very good
9,681 reviews

Food

7.1

Entertainment

7.1

Crew

8.5

Boarding

8.2

Overall

8.0

Comfort

7.9

Reviews

1 / 10

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

United Airlines
7.4
Good
8,965 reviews
Alaska Airlines
8.0
Very good
9,681 reviews

Food

7.1

Entertainment

7.1

Crew

8.5

Boarding

8.2

Overall

8.0

Comfort

7.9

Reviews

1 / 10

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,681 reviews

Food

7.1

Entertainment

7.1

Crew

8.5

Boarding

8.2

Overall

8.0

Comfort

7.9

Reviews

1 / 10

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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.?

    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 3 different airlines.

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

    American Airlines, at $400, was found to be the cheapest airline from Idaho Falls to Washington, D.C..Alternate airlines to your destination round-trip include Alaska Airlines and United Airlines. American Airlines is priced at 41% 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?

    $198 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on American Airlines and United Airlines, with prices starting from $214 and $323, 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. Reagan-National, Idaho Falls Fanning Field - Washington, D.C. Dulles Intl 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

Traveling to a place near Idaho Falls?

Book flights to Idaho Falls if you plan to visit one of these locations
Fairfax
Arlington
Alexandria
Springfield
Silver Spring
Rockville
Tysons
Gaithersburg
Fredericksburg
Linthicum Heights
Laurel
Falls Church
Greenbelt
Easton
Oxon Hill
Herndon
Woodbridge
Bowie
Reston
National Harbor

Browse thousands of different options on Cheapflights for your next trip

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Top 3 airlines flying from Idaho Falls to Washington, D.C.

Discover the top 3 airlines that operate flights from Idaho Falls to Washington, D.C.. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$338Average$541FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$369Average$877FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$401Average$787FlexibilityNo cancel feeOn-time69%
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