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Dulles Intl

$228+ Cheap flights from Idaho Falls (IDA) to Dulles Intl (IAD)

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 7/28. Fares are subject to change and may not be available on all flights or dates of travel.
IDA — IAD
jul. 8 — jul. 151
mar. 7/8
mar. 7/15
1 adult, Economy
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Cheap flight deals from Idaho Falls to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Idaho Falls (IDA) to Dulles Intl (IAD). 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 julio 3, 2025.

Round-trip from

$390
(Alaska Airlines)

One-way from

$228
(Mytrip)

Popular in

June

Cheapest in

September
From Idaho Falls Fanning Field to Washington, D.C. Dulles Intl
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One-way flight from Idaho Falls Fanning Field to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 22% potential increase in price ($189 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($38 potential savings vs. average RT price).
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Find flight deals from Idaho Falls to Dulles Intl

Cheapest flights from Idaho Falls to Dulles Intl
Explore the most affordable flight options available from Idaho Falls to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 3, 2025.

This Alaska Airlines deal was found by Cheapflights users on 6/30. 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.
lun. 8/253:54 pmIDA - IAD
1 stop13h 38mAlaska Airlines
mié. 8/277:00 amIAD - IDA
1 stop10h 17mAlaska Airlines
Deal found 6/30$390
This American Airlines deal was found by Cheapflights users on 7/2. 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.
sáb. 10/41:35 pmIDA - IAD
1 stop7h 10mAmerican Airlines
jue. 10/96:11 amIAD - IDA
1 stop8h 30mAmerican Airlines
Deal found 7/2$395
This United Airlines deal was found by Cheapflights users on 7/3. 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.
vie. 7/254:13 pmIDA - IAD
1 stop6h 32mUnited Airlines
vie. 8/156:30 amIAD - IDA
1 stop9h 02mUnited Airlines
Deal found 7/3$447
This Delta deal was found by Cheapflights users on 6/30. 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.
lun. 8/253:00 pmIDA - IAD
2 stops12h 55mDelta
mié. 8/276:00 amIAD - IDA
2 stops10h 19mDelta
Deal found 6/30$495
This Mytrip deal was found by Cheapflights users on 7/3. 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.
lun. 7/75:04 pmIDA - IAD
2 stops17h 09mMultiple Airlines
jue. 7/1011:58 amIAD - IDA
3 stops25h 46mMultiple Airlines
Deal found 7/3$806

Cheapflights Fare Finder

Customize your flight search to find flights from Idaho Falls to Dulles Intl 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 julio 3, 2025.
Use the filters below to find and compare flights from Idaho Falls to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Idaho Falls

Fly to

Dulles Intl

Route

Depart

Return

Price

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

lun. 8/25

3:54 pm-7:32 am

1 stop13h 38m

Washington, D.C. Dulles Intl

mié. 8/27

7:00 am-3:17 pm

1 stop10h 17m

$390

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

mié. 9/17

6:13 am-5:09 pm

1 stop8h 56m

Washington, D.C. Dulles Intl

lun. 9/22

9:00 am-3:20 pm

1 stop8h 20m

$394

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

sáb. 10/4

1:35 pm-10:45 pm

1 stop7h 10m

Washington, D.C. Dulles Intl

jue. 10/9

6:11 am-12:41 pm

1 stop8h 30m

$395

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

vie. 7/25

4:13 pm-12:45 am

1 stop6h 32m

Washington, D.C. Dulles Intl

vie. 8/15

6:30 am-1:32 pm

1 stop9h 02m

$447

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

lun. 8/25

3:00 pm-5:55 am

2 stops12h 55m

Washington, D.C. Dulles Intl

mié. 8/27

6:00 am-2:19 pm

2 stops10h 19m

$495

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

lun. 7/28

5:04 pm-11:37 am

2 stops16h 33m

$228

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

lun. 7/28

6:15 am-7:27 am

1 stop23h 12m

$338

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

jue. 12/18

1:44 pm-10:14 pm

1 stop6h 30m

$381

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

jue. 12/18

6:05 am-5:56 pm

2 stops9h 51m

$445

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

Best time to book a flight from Idaho Falls to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl 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. Dulles Intl Airport

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

Currently, August is the cheapest month in which you can book a flight from Idaho Falls to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Idaho Falls to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $345). 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.

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. 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 Dulles Intl. Reviews last updated julio 3, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Delta, and Hawaiian Airlines from Idaho Falls to Washington, D.C. Dulles Intl Airport to help guide your decision. 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
10,000 reviews

Boarding

8.1

Entertainment

7.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,982 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.8
Good
2,545 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,861 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

Find useful and relevant information for your journey from Idaho Falls to Dulles Intl. 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. Dulles Intl?

    For a flight from Idaho Falls to Washington, D.C. Dulles Intl, you will be flying from Fanning Field. Idaho Falls Fanning Field (IDA) is just 3.8 mi from the center of the city. Fanning Field is the only Idaho Falls airport and it handles 0 outbound flights to Washington, D.C. Dulles Intl per day. 2 airlines have flights to Washington, D.C. Dulles Intl from Idaho Falls Fanning Field on a regular basis.

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

    Our cheapest airline available from Idaho Falls to Washington, D.C. Dulles Intl Airport is Alaska Airlines. Our recent data shows that you can find tickets from as low as $390 on this airline. Additional options worth looking into are Hawaiian Airlines and American Airlines, starting at $394 and $395 round-trip. You may be able to fly from Idaho Falls to Washington, D.C. Dulles Intl Airport for 39% less than the average price by searching for these airlines.

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

    For one-way options, check prices for Alaska Airlines. According to our data, you can fly for as low as $338. Users have also found prices from $381 and $445 on American Airlines and Delta, respectively.

  • Can I find deals for flights from Idaho Falls to Dulles Intl that include hotel bookings?

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

  • How can I find direct flights from Idaho Falls to Dulles Intl?

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

  • Can I find deals for business class flights from Idaho Falls to Dulles Intl?

    Yes. Cheapflights offers flight deals from Idaho Falls to Dulles Intl 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. Dulles Intl Airport?

    Currently, August is the cheapest month in which you can book a flight from Idaho Falls to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Idaho Falls to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $345). 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
Arlington
Woodbridge
Alexandria
Tysons
Silver Spring
Fredericksburg
Linthicum Heights
Gaithersburg
Fairfax
Easton
Towson
Waldorf
Laurel
Falls Church
Rockville
Springfield
National Harbor
Manassas
Dundalk
Bowie

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Top 2 airlines flying from Idaho Falls to Dulles Intl

Discover the top 2 airlines that operate flights from Idaho Falls to Dulles Intl. 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 julio 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$338Average$426FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$473Average$694FlexibilityNo cancel feeOn-time69%

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