IAD - IDA

$146 Find Cheap Flights from Washington, D.C. to Idaho Falls - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Washington, D.C. to Idaho Falls departing on 9/10. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$308
Typical prices: $461-$524
Multiple Airlines
Thu 8/27Mon 8/31
IAD - IDA • 1 stop
Cheapest one-way
$146
Multiple Airlines
Thu 9/10
IAD - IDA • 1 stop
Nonstop flights
Not available
There are currently no direct flights between Washington, D.C. and Idaho Falls. You'll need at least 1 connection.
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Top layover airports
Dallas (DFW)
Cheapest • Avg $566 (round-trip)
Denver (DEN)
Shortest trip • 7h 41m (one-way)
Insights
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When to travel
February
Cheapest • 100% price drop
September
Most popular
Good to know
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We hope you love your trip to Idaho Falls!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Washington, D.C. to Idaho Falls (IAD-IDA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Washington, D.C. to Idaho Falls that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Washington, D.C. to Idaho Falls

Thu, Aug 27 - Mon, Aug 31
Multiple Airlines Logo
8:59 am - 10:22 amIAD  Washington, D.C. Dulles Intl-IDA Idaho Falls Fanning Field
27h 23m1 stop Las Vegas Harry Reid Intl
Multiple Airlines Logo
8:33 pm - 5:14 pmIDA  Idaho Falls Fanning Field-IAD Washington, D.C. Dulles Intl
18h 41m2 stops Las Vegas Harry Reid Intl Atlanta Hartsfield-Jackson
$308Multiple Airlines
Thu, Aug 27 - Mon, Aug 31
Multiple Airlines Logo
8:59 am - 10:22 amIAD  Washington, D.C. Dulles Intl-IDA Idaho Falls Fanning Field
27h 23m1 stop Las Vegas Harry Reid Intl
Multiple Airlines Logo
8:33 pm - 8:04 amIDA  Idaho Falls Fanning Field-IAD Washington, D.C. Dulles Intl
9h 31m1 stop Las Vegas Harry Reid Intl
$350Multiple Airlines
Sat, Sep 5 - Mon, Sep 14
Multiple Airlines Logo
7:00 am - 7:30 pmIAD  Washington, D.C. Dulles Intl-IDA Idaho Falls Fanning Field
38h 30m2 stops Atlanta Hartsfield-Jackson Phoenix Sky Harbor Intl
Multiple Airlines Logo
6:21 pm - 6:20 amIDA  Idaho Falls Fanning Field-IAD Washington, D.C. Dulles Intl
9h 59m1 stop Las Vegas Harry Reid Intl
$353Multiple Airlines
Sat, Sep 5 - Mon, Sep 14
United Airlines Logo
2:43 pm - 9:18 pmIAD  Washington, D.C. Dulles Intl-IDA Idaho Falls Fanning Field
8h 35m1 stop Denver Intl
United Airlines Logo
4:04 pm - 12:32 amIDA  Idaho Falls Fanning Field-IAD Washington, D.C. Dulles Intl
6h 28m1 stop Denver Intl
$359United Airlines
Sat, Oct 24 - Tue, Oct 27
Alaska Airlines Logo
7:02 am - 3:20 pmIAD  Washington, D.C. Dulles Intl-IDA Idaho Falls Fanning Field
10h 18m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
1:58 pm - 11:59 pmIDA  Idaho Falls Fanning Field-IAD Washington, D.C. Dulles Intl
8h 01m1 stop Seattle/Tacoma Intl
$359Alaska Airlines
Fri, Oct 30 - Tue, Nov 3
American Airlines Logo
6:42 am - 1:09 pmIAD  Washington, D.C. Dulles Intl-IDA Idaho Falls Fanning Field
8h 27m1 stop Dallas/Fort Worth
American Airlines Logo
1:35 pm - 11:19 pmIDA  Idaho Falls Fanning Field-IAD Washington, D.C. Dulles Intl
7h 44m1 stop Dallas/Fort Worth
$359American Airlines
Sat, Sep 5 - Mon, Sep 14
United Airlines Logo
2:43 pm - 9:18 pmIAD  Washington, D.C. Dulles Intl-IDA Idaho Falls Fanning Field
8h 35m1 stop Denver Intl
United Airlines Logo
4:04 pm - 12:32 amIDA  Idaho Falls Fanning Field-IAD Washington, D.C. Dulles Intl
6h 28m1 stop Denver Intl
$372United Airlines
Sun, Nov 8 - Thu, Nov 12
United Airlines Logo
10:00 am - 3:38 pmIAD  Washington, D.C. Dulles Intl-IDA Idaho Falls Fanning Field
7h 38m1 stop Denver Intl
United Airlines Logo
2:35 pm - 11:15 pmIDA  Idaho Falls Fanning Field-IAD Washington, D.C. Dulles Intl
6h 40m1 stop Denver Intl
$379United Airlines
Mon, Sep 21 - Wed, Sep 23
Alaska Airlines Logo
5:57 pm - 3:20 pmIAD  Washington, D.C. Dulles Intl-IDA Idaho Falls Fanning Field
23h 23m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
2:01 pm - 11:59 pmIDA  Idaho Falls Fanning Field-IAD Washington, D.C. Dulles Intl
7h 58m1 stop Seattle/Tacoma Intl
$389Alaska Airlines
Sat, Sep 19 - Wed, Sep 23
Alaska Airlines Logo
9:03 am - 3:20 pmIAD  Washington, D.C. Dulles Intl-IDA Idaho Falls Fanning Field
8h 17m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
2:01 pm - 11:59 pmIDA  Idaho Falls Fanning Field-IAD Washington, D.C. Dulles Intl
7h 58m1 stop Seattle/Tacoma Intl
$419Alaska Airlines
Booking Insights

KAYAK's insights & trends for Washington, D.C. to Idaho Falls flights

Get data-powered insights and trends into flights from Washington, D.C. to Idaho Falls to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Washington, D.C. Dulles Intl Airport to Idaho Falls?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Washington, D.C. Dulles Intl Airport to Idaho Falls departing in August.

Flight prices are below average for this route right now.

Flights to Idaho Falls from Washington, D.C. Dulles Intl Airport usually cost between $458 and $509 in August.
The lowest price found in the past 5 days was $308 on Multiple Airlines (Aug 27-Aug 31).

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Idaho Falls, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Washington, D.C. Dulles Intl Airport to Idaho Falls is February, where tickets cost $0 (return) on average. On the other hand, the most expensive months are May and June, where the average cost of round-trip tickets is $795 and $784 respectively.

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Good to know

Low season

November

Cheapest flight

$146
Best time to beat the crowds with an average 36% drop in price.
Most popular time to fly and prices are also 15% lower on average.
Flight from Washington, D.C. to Idaho Falls

When to book flights from Washington, D.C. to Idaho Falls

Are your dates flexible? Find out the best times to travel from Washington, D.C. to Idaho Falls based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Washington, D.C. to Idaho Falls flights

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

    In the last 5 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Idaho Falls was $146 for a one-way ticket and $308 for a round-trip.

  • Do I need a passport to fly between Washington, D.C. and Idaho Falls?

    A passport is not required to fly from Washington, D.C. to Idaho Falls.

  • Which airports will I be using when flying from Washington, D.C. to Idaho Falls?

    When flying out of Washington, D.C. you will be using Washington, D.C. Dulles Intl. You will be landing at Idaho Falls, also known as Idaho Falls Fanning Field.

  • Which aircraft models fly most regularly from Washington, D.C. to Idaho Falls?

    The Airbus A321neo is the aircraft model that flies most regularly on the Washington, D.C. to Idaho Falls flight route.

  • Which airline alliances offer flights from Washington, D.C. to Idaho Falls?

    oneworld, and Star Alliance are the airline alliances operating flights between Washington, D.C. and Idaho Falls, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from Washington, D.C. to Idaho Falls, Alaska Airlines or United Airlines?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Idaho Falls are Alaska Airlines and United Airlines. With an average price for the route of $708 and an overall rating of 7.9, Alaska Airlines is the most popular choice. United Airlines is also a great choice for the route, with an average price of $491 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Washington, D.C. to Idaho Falls?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington, D.C. to Idaho Falls.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington, D.C. to Idaho Falls?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Idaho Falls from Washington, D.C. is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington, D.C. to Idaho Falls?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Idaho Falls with an airline and back to Washington, D.C. with another airline. Booking your flights between Washington, D.C. and IDA can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington, D.C. to Idaho Falls?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Idaho Falls from Washington, D.C. up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

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

Information on your arrival and departure airports

Washington, D.C. (IAD)
Idaho Falls (IDA)