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

Our cheapest airline available from Washington, D.C. Dulles Intl Airport to Idaho Falls is Alaska Airlines. Our recent data shows that you can find tickets from as low as $480 on this airline. Additional options worth looking into are United Airlines and American Airlines, starting at $675 and $869 round-trip. Alaska Airlines is currently priced 31% below the average price you’ll pay for this route.

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

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

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

Users have found that flying from Washington, D.C. Dulles Intl Airport to Idaho Falls on a Sunday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.

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

February is one of the best times of the year to fly to Idaho Falls from Washington, D.C. Dulles Intl Airport. Prices for February average $740 per person but you can even find prices for as low as $361. The most expensive prices can be found in the month of March. Opting for a February flight can save you 35% on your journey compared to booking in March

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

Most trusted provider : When it comes to deals on Washington, D.C. Dulles Intl Airport-Idaho Falls 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 Washington, D.C. Dulles Intl Airport-Idaho Falls flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

For a flight from Washington, D.C. Dulles Intl to Idaho Falls, you will be flying into 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 inbound flights from Washington, D.C. Dulles Intl per day. 2 airlines have flights to Idaho Falls Fanning Field from Washington, D.C. Dulles Intl on a regular basis.

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

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

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

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

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

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

$223+ Flights from Washington, D.C. Dulles Intl Airport to Idaho Falls

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Cheap flight deals from Dulles Intl to Idaho Falls

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$480 (Alaska Airlines)
One-way from	$438 (United Airlines)
Popular in	March
Cheapest in	January
Average price	$527

Provider with most accurate pricing for Washington, D.C. Dulles Intl-Idaho Falls Fanning Field flight deals.

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Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Idaho Falls Fanning Field flights.

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From Washington, D.C. Dulles Intl to Idaho Falls Fanning Field

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One-way flight from Washington, D.C. Dulles Intl to Idaho Falls Fanning Field

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High demand for flights, 8% potential price rise

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($22 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in February 2025

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Find flight deals from Dulles Intl to Idaho Falls

Cheapest flights from Dulles Intl to Idaho Falls
Explore the most affordable flight options available from Dulles Intl to Idaho Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 4, 2025.

Sun 8/3110:05 amIAD - IDA

2 stops14h 10mDelta

Thu 9/47:00 pmIDA - IAD

2 stops11h 42mDelta

Deal found 2/3

$437

Thu 3/67:00 amIAD - IDA

1 stop10h 30mAlaska Airlines

Wed 3/128:00 amIDA - IAD

1 stop7h 48mAlaska Airlines

Deal found 2/3

$480

Sat 3/1510:05 amIAD - IDA

1 stop7h 28mUnited Airlines

Tue 3/182:35 pmIDA - IAD

1 stop6h 48mUnited Airlines

Deal found 2/3

$485

Sun 8/317:07 amIAD - IDA

1 stop7h 04mAmerican Airlines

Thu 9/41:51 pmIDA - IAD

1 stop6h 39mAmerican Airlines

Deal found 2/3

$529

Best flights from Dulles Intl to Idaho Falls
Discover carefully curated flight deals from Dulles Intl to Idaho Falls that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 4, 2025.

Thu 3/67:00 amIAD - IDA

1 stop10h 30mAlaska Airlines

Wed 3/128:00 amIDA - IAD

1 stop7h 48mAlaska Airlines

Deal found 2/3

$480

Fri 3/2810:20 pmIAD - IDA

1 stop17h 07mUnited Airlines

Mon 3/314:30 pmIDA - IAD

1 stop10h 52mUnited Airlines

Deal found 2/4

$675

Fri 3/2811:46 amIAD - IDA

2 stops12h 26mAmerican Airlines

Mon 3/3112:58 pmIDA - IAD

2 stops9h 00mAmerican Airlines

Deal found 2/4

$869

Wed 7/212:30 pmIAD - IDA

2 stops11h 45mDelta

Wed 7/97:00 pmIDA - IAD

2 stops11h 42mDelta

Deal found 2/4

$873

Last-minute flights from Dulles Intl to Idaho Falls
Discover last-minute flight deals from Dulles Intl to Idaho Falls. Data last updated February 4, 2025 and is based on user searches.

Thu 3/67:00 amIAD - IDA

1 stop10h 30mAlaska Airlines

Wed 3/128:00 amIDA - IAD

1 stop7h 48mAlaska Airlines

Deal found 2/3

$480

Sat 3/1510:05 amIAD - IDA

1 stop7h 28mUnited Airlines

Tue 3/182:35 pmIDA - IAD

1 stop6h 48mUnited Airlines

Deal found 2/3

$485

Thu 3/207:35 amIAD - IDA

1 stop6h 43mDelta

Tue 3/251:00 pmIDA - IAD

1 stop8h 49mDelta

Deal found 2/2

$577

One-way flights from Dulles Intl to Idaho Falls
Search for one-way flight options from Dulles Intl to Idaho Falls. Find affordable one-way fares based on user searches. Data last updated February 4, 2025.

Sun 3/3010:20 pmIAD - IDA

1 stop13h 12mUnited Airlines

Deal found 2/4

$438

Find flights from Dulles Intl to Idaho Falls within your budget

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Thu 3/6

7:00 am-3:30 pm

1 stop10h 30m

Idaho Falls Fanning Field

Wed 3/12

8:00 am-5:48 pm

1 stop7h 48m

$480

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Sat 3/15

10:05 am-3:33 pm

1 stop7h 28m

Idaho Falls Fanning Field

Tue 3/18

2:35 pm-11:23 pm

1 stop6h 48m

$485

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Thu 3/20

7:35 am-12:18 pm

1 stop6h 43m

Idaho Falls Fanning Field

Tue 3/25

1:00 pm-11:49 pm

1 stop8h 49m

$577

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Thu 3/20

6:18 am-12:28 pm

1 stop8h 10m

$223

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Thu 3/20

6:00 am-6:13 pm

2 stops14h 13m

$265

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Sat 6/28

7:59 pm-9:28 am

1 stop15h 29m

$353

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Tue 7/1

6:55 pm-10:38 pm

1 stop29h 43m

$368

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/3

Compare providers for flights from Dulles Intl to Idaho Falls

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Dulles Intl to Idaho Falls in February.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	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 Washington, D.C. Dulles Intl Airport-Idaho Falls flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C. Dulles Intl Airport-Idaho Falls flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Idaho Falls flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Idaho Falls 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 Washington, D.C. Dulles Intl Airport-Idaho Falls 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 Dulles Intl to Idaho Falls

Have a flexible travel schedule? Discover the best time to fly to Idaho Falls from Dulles Intl 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 Dulles Intl to Idaho Falls

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

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

Currently, October is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Idaho Falls (average of $380). Flying from Washington, D.C. Dulles Intl Airport to Idaho Falls in July is currently the most expensive (average of $628). 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 IAD to IDA?

One of the essential ways to save on airfare from Washington, D.C. Dulles Intl Airport to Idaho Falls is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the morning could potentially save you up to 7% on airfare.

Rainfall in Idaho Falls by month

In terms of precipitation, rainfall in Idaho Falls ranges from 0.6 - 2.0 inches per month. May is typically the wettest month, when rainfall can reach 2.0 in. July is typically the driest time to visit Idaho Falls when rainfall is around 0.6 in.

Temperature in Idaho Falls by month

If weather is an important factor for your trip to Idaho Falls, 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 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

Reviews of airlines servicing Idaho Falls

Alaska Airlines

8.0

Very good

9,678 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

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

9,678 reviews

Alaska Airlines

8.0

Very good

9,678 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

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

8,408 reviews

Alaska Airlines

8.0

Very good

9,678 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

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

8,887 reviews

Alaska Airlines

8.0

Very good

9,678 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

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

9,678 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

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

What airport do you fly into for flights to Idaho Falls from Washington, D.C. Dulles Intl?
For a flight from Washington, D.C. Dulles Intl to Idaho Falls, you will be flying into 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 inbound flights from Washington, D.C. Dulles Intl per day. 2 airlines have flights to Idaho Falls Fanning Field from Washington, D.C. Dulles Intl on a regular basis.
What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Idaho Falls round-trip?
Our cheapest airline available from Washington, D.C. Dulles Intl Airport to Idaho Falls is Alaska Airlines. Our recent data shows that you can find tickets from as low as $480 on this airline. Additional options worth looking into are United Airlines and American Airlines, starting at $675 and $869 round-trip. Alaska Airlines is currently priced 31% below the average price you’ll pay for this route.
Can I find deals for flights from Dulles Intl to Idaho Falls that include hotel bookings?
Yes. In addition to deals on Dulles Intl to Idaho Falls flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Dulles Intl to Idaho Falls?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Idaho Falls.
Can I find deals for business class flights from Dulles Intl to Idaho Falls?
Yes. Cheapflights offers flight deals from Dulles Intl to Idaho Falls 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 Washington, D.C. Dulles Intl Airport to Idaho Falls?
Currently, October is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Idaho Falls (average of $380). Flying from Washington, D.C. Dulles Intl Airport to Idaho Falls in July is currently the most expensive (average of $628). 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.

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Top 2 airlines flying from Dulles Intl to Idaho Falls

Airline	Cheapest	Average	Flexibility	On-time
Alaska Airlines	Cheapest$425	Average$500	FlexibilityNo cancel fee	On-time75%
United Airlines	Cheapest$549	Average$782	FlexibilityNo cancel fee	On-time69%

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$223+ Cheap flights from Dulles Intl (IAD) to Idaho Falls (IDA)

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 3/20. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Dulles Intl to Idaho Falls with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Dulles Intl to Idaho Falls

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Dulles Intl to Idaho Falls

Cheapest flights from Dulles Intl to Idaho FallsExplore the most affordable flight options available from Dulles Intl to Idaho Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 4, 2025.

Explore the most affordable flight options available from Dulles Intl to Idaho Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 4, 2025.

Find flights from Dulles Intl to Idaho Falls within your budget

Compare providers for flights from Dulles Intl to Idaho Falls

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 Dulles Intl to Idaho Falls in February.

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

Have a flexible travel schedule? Discover the best time to fly to Idaho Falls from Dulles Intl with our price prediction graph.

Travel insights for flights from Dulles Intl to Idaho Falls

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

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

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

Find hourly flight availability from Dulles Intl to Idaho Falls. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 4, 2025.

Rainfall in Idaho Falls by month

Plan your trip to Idaho Falls by taking into account the average rainfall totals by month.

Temperature in Idaho Falls by month

Plan your trip to Idaho Falls by taking into account the average temperature totals by month.

Reviews of airlines servicing Idaho Falls

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Idaho Falls. 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 into for flights to Idaho Falls from Washington, D.C. Dulles Intl?

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

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

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

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

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

Traveling to a place near Washington, D.C. Dulles Intl Airport?

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Alternative routes for Dulles Intl to Idaho Falls

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Top 2 airlines flying from Dulles Intl to Idaho Falls

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Cheapest flights from Dulles Intl to Idaho Falls
Explore the most affordable flight options available from Dulles Intl to Idaho Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 4, 2025.