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WAS - IDA

Find cheap flights from Washington, D.C. to Idaho Falls from $209

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 5/7. 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
0 bags
Sat 4/27
Sat 5/4

Search hundreds of travel sites at once for deals on flights to Idaho Falls

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Idaho Falls, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Idaho Falls, as well as popular online travel agencies
In the last 7 days travelers have searched 46,342,885 times on KAYAK, and here is why:

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

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 and deals for you by selecting your travel dates.
Choose your dates
9:38 pm - 4:22 pmBWI-IDA
20h 44m2 stops
5:03 pm - 7:08 amIDA-BWI
12h 05m1 stop
Wed, Apr 17 - Thu, May 2
7:10 am - 12:50 pmIAD-IDA
7h 40m1 stop
1:30 pm - 11:42 pmIDA-IAD
8h 12m1 stop
$413Delta
Find Deal
Tue, Apr 23 - Wed, Apr 24
7:10 am - 12:50 pmIAD-IDA
7h 40m1 stop
1:30 pm - 11:59 pmIDA-IAD
8h 29m2 stops
$423Delta
Find Deal
Tue, Apr 23 - Wed, Apr 24
5:45 pm - 12:50 pmIAD-IDA
21h 05m2 stops
7:00 pm - 9:16 amIDA-IAD
12h 16m2 stops
$430Delta
Find Deal
Tue, Apr 23 - Wed, Apr 24
7:40 am - 2:51 pmIAD-IDA
9h 11m1 stop
6:00 am - 5:57 pmIDA-IAD
33h 57m2 stops
$465Alaska Airlines
Find Deal
Tue, Apr 30 - Sun, May 5
7:10 am - 11:56 pmIAD-IDA
18h 46m2 stops
6:00 am - 5:57 pmIDA-IAD
33h 57m2 stops
$472Alaska Airlines
Find Deal
Tue, Apr 30 - Sun, May 5
6:50 am - 12:44 pmIAD-IDA
7h 54m1 stop
1:15 pm - 11:37 pmIDA-IAD
8h 22m1 stop
$505American Airlines
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Fri, May 10 - Mon, May 13
9:30 am - 9:07 pmIAD-IDA
13h 37m2 stops
2:30 pm - 5:21 amIDA-IAD
12h 51m1 stop
$530United Airlines
Find Deal
Sat, Apr 27 - Sat, May 4
8:28 am - 9:07 pmBWI-IDA
14h 39m1 stop
10:45 am - 11:00 pmIDA-BWI
10h 15m1 stop
$531United Airlines
Find Deal
Wed, Apr 17 - Sat, May 4
1:10 pm - 9:37 pmDCA-IDA
10h 27m1 stop
6:38 am - 4:30 pmIDA-DCA
7h 52m1 stop
$589American Airlines
Find Deal
Tue, Apr 16 - Sat, Apr 20

Flights from Washington, D.C. to Idaho Falls - Travel Insights & Trends

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.

What’s the cheapest day of the week to fly from Washington, D.C. to Idaho Falls?

The average price of all flights from Washington, D.C. to Idaho Falls clicked on KAYAK for each day over the last 12 months.
For Washington, D.C. to Idaho Falls, Saturday is the cheapest day to fly on average and Sunday is the most expensive. Flying from Idaho Falls back to Washington, D.C., the best deals are generally found on Thursday, with Friday being the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Washington, D.C. 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. to Idaho Falls is January, where tickets cost $464 on average. On the other hand, the most expensive months are December and March, where the average cost of tickets is $896 and $891 respectively.

How far in advance should I book a flight from Washington, D.C. to Idaho Falls?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Washington, D.C. to Idaho Falls, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Washington, D.C. to Idaho Falls, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 82 days before departure.

Which airlines provide the cheapest flights from Washington, D.C. to Idaho Falls?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 3 days, Alaska Airlines offered the best one-way deal for that route, at $209. KAYAK users also found Washington, D.C. to Idaho Falls round-trip flights on Delta from $413 and on Alaska Airlines from $465.

How long does a flight from Washington, D.C. to Idaho Falls take?

There are no direct flights for this route. The shortest travel duration to get to Idaho Falls from Washington, D.C. is 6h 36m.

Good to know

Low season

March

High season

July

Cheapest flight

$209
Best time to beat the crowds but there is an average 27% increase in price.
Most popular time to fly with an average 1% increase in price.
Flight from Washington Dulles Airport 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 flights from Washington, D.C. to Idaho Falls

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

    In the last 3 days, the lowest price for a flight from Washington, D.C. to Idaho Falls was $209 for a one-way ticket and $413 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?

    There are 2 airports in Washington, D.C. (Washington, D.C. Reagan-National and Washington, D.C. Dulles Intl.) and only 1 airport in Idaho Falls (Idaho Falls Fanning Field). The cheapest flights are generally found on the Washington Dulles Airport to Idaho Falls Fanning Field flight route.

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

    We unfortunately don’t have that data for this specific route.

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

    oneworld, SkyTeam, 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, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Idaho Falls are Delta and United Airlines. With an average price for the route of $696 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $730 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.

  • 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.

See more FAQs

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

Need help choosing which airline to fly with from Washington, D.C. to Idaho Falls? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to KAYAK reviews.
8.0
DeltaOverall score based on 11402 reviews
82boarding
80entertainment
81overall
75food
79comfort
86crew
Airline reviews

Carly the flight attendant was extremely helpful and very accommodating to passengers on the flight from what I noticed. Couldn't be more satisfied with the service and assistance from Delta's flight attendant, Thanks again Carly!!

Read more about Delta

Carly the flight attendant was extremely helpful and very accommodating to passengers on the flight from what I noticed. Couldn't be more satisfied with the service and assistance from Delta's flight attendant, Thanks again Carly!!

I didn’t not like that I could not select my seat and ended up with the worse seat.

I didn’t like that I could not select my seat and was assigned a seat when I checked in at LAX

Delta did an awful job w logistics at DTW. Missed connection. We were there an hour early. SUCKED

Inflight entertainment stopped working as we taxi to runway and never worked again until landing and taxi to gate. Grrrr

Had to run to make it only to have the flight delayed to wait for all the late connectors Second drink service skipped up

Boarding was a sh!t show. JFK BOARDING was awful. The agent called three sections at a time Clogging the area then yelling at people to not block the walk way. How are you going to call delta one , premium select and comfort plus at once and the yell at highest paying passengers. Need to do a lot better and the flight attendants in the galley need to understand that their voices travel. They were talking about others and everyone in the cabin heard them

Uncomfortable seats on 14 hour flight. Mediocre food. On time and great crew.

MSP to Atlanta was much better than Atlanta to St. Kitts. Paid $180 each for myself and wife for Delta comfort from Atlanta to St. Kitts. Seats were more narrow and obviously old and worn out. Tailbone is killing me. Seat would not recline. Seats behind reclined and we were not an exit row or in front of an exit row. Entertainment did not work in that the movie jumped forward and back and there was no audio. The plug in the arm rest was loose. Flight attendant tried “resetting” the video for my seat but no good. She never checked back. Someone else near me had the same issue. Touch screen was unresponsive. No where near as comfortable as MSP to Atlanta flight. 3 plus hrs. flight time without the basic amenities and not even remotely close to comfortable but paid for Comfort plus. I will be very disappointed if I have the same on my return “Comfort Plus” flight St. Kitts to Atlanta. At the very least my wife and I should be refunded for round trip “Comfort Plus” charges. Please feel free to contact me directly for more details.

public website still broken for years randomly blocking browsers with privacy options active after loading a page maybe once. check-in on laptop was almost impossible but eventually randomly worked. had to print pass at airport since couldn't get back in to load digital pass on mobile firefox or chrome. red eye flight so smooth onboarding, plenty of room to spread out, easy offboarding. onboard wifi instructions mention vpn can cause problems connecting but fails to also mention private dns. no printed or built in menu list, seems weird to require personal device to point at qr code link for menu which does not even allow direct ordering. people with health condition risk related dietary restrictions trying to avoid for example cholesterol and sugar are left guessing what they can order either way without nutritional info highlights (cranberry juice was minute maid cocktail with as much suger as typical can of soda). tap to pay wasn't working and always seems sketchy to manually enter card info. good movie variety, so limited tv was okay.

The crew were really great, but the 4 hour delay in small chunks was the worst.

Just a crappy airline. The same every time. You feel you are a cow on a farm. You are being being whipped and pulled.

Wasn’t very crowded. Seamless processes. No issues traveling with two little kids.

My interaction with the flight attendent Eve was horrible. I was seated in 3F and was blown away watching her repeatedly skip me as she took other customer orders for lunch...she took the customer next to me but skipped me, then took everyone's order around me (in front of and behind me) . After she had taken every customer's orders to include those behind me, she came to me and said we are out of everything except one last item. I was mortified, in that, I am a 1k flyer, had pre-ordered AND as an African American could only assume why she repeatedly skipped me...mortified. no words

The Flight was good, pilot seemed very skillful. My wheel chair sister who could barely walk was allotted the second last seat in the aircraft, with great difficulty she managed to reach on her seat, as she required attendance we were given separate seat, even on request no one cared, so much so there were single passengers who were given twin seats. May not be taken as complaint but a reminder to the checkin staff to keep in mind in future the allottment of wheel chair passengers seats.

Almost 2 hour delay in boarding with all standing ready to board at original time. No explanation given.

787-9 Transcon from IAD-LAX FYI no meals in premium plus, not considered Premium - seats are wonderful https://www.united.com/ual/en/us/fly/travel/inflight/premium-services.html Horrible handling of delayed flight

I was forced to gate check my carry on luggage. Somehow it did not arrive at my destination. I still have yet to receive my bag r days after arrival.

Boarding area is a mess. Lines not bounded and gate area too small. Food options (on this specific flight) were poor and you couldn’t pick part of it since it was like a mash of chicken and other unrecognisable stuff. Comfort of seats along with child noise made it difficult to get a good sleep. Last, the flight attendant that served my aisle was rude (others seemed fine) towards me and others.

It was a great experience. Do not normally fly United. Very nice. Thank you and happy holidays

The flight was scheduled to depart DCA at 12:30 pm but was delayed twice on the ground so that we were finally scheduled to depart at around 4:00 pm. Once we boarded, it was announced that takeoff would be delayed again to fix a hydraulic problem which delayed our eventual takeoff until around 5:00 pm. Once we departed, it was a smooth flight back to ORD. We did not get any explanation about what caused the original significant delay. In my experience, this happens frequently with AA.

Lots of weather delays that were poorly communicated and managed. I get there are weather delays but they didn’t make it clear what was happening or comfortable on the plane

Everything was on time; the flight attendants and the gate personnel were very pleasant and helpful.

Our second leg to Jackson WY was unable to land due to weather. We were flown back to Dallas after stopping in SLC. We were given hotel rooms and vouchers. We were told that we would be back on the same plane in the morning. Instead we were given a different flight with different seats. Not a good experience. No one knew what was going on.

Perfect flight. On time departure and early arrival. Smooth flight.

Awful! The flight was delayed and we sat on the plane in DCA for an hour because fuel was out in the wrong part of the plane and would not be accessible during flight. So the plane had to be refueled in correct tank. They also allowed someone to get off of the plane. This delayed my six hour flight by an hour and made me miss my connecting flight. I ran to new gate and American Airlines agents new about the delay and even knew that I was trying to make the connection. They knew thru communication with my friend while in flight that I was in the airport and running to the new gate and they still closed the gate and refused to let me on the new flight despite plane still being at the gate. It was horrible and I had to be rebooked on a flight for 24 hours later. This has been a nightmare and if American Airlines can cause customers to be delayed and then have zero empathy as having an on time flight was more important to them than helping a customer who was delayed by no fault of her own, then it's seems that it's not a company that I want to continue to give my loyalty to. I'm so disgusted.

Help was available but timing was bad in my case

It was a horrible snow storm, but updates were inconsistent and the app never displayed a remotely accurate time or gate until very close to boarding.

The flight was so short that the lack of leg room didn't bother me for long. The plane was smaller so only two seats per row and there were chargers. However, they didn't serve any snacks.

Staff were very helpful to my dad in a wheelchair. Thank you.

Book cheap flights from Washington, D.C. to Idaho Falls

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Washington, D.C. to Idaho Falls found on KAYAK in the last 72 hours.
5/7Tue
1 stopAlaska Airlines
9h 11mIAD-IDA
$209
5/7Tue
2 stopsDelta
10h 18mIAD-IDA
$214
8/28Wed
1 stopDelta
6h 48mIAD-IDA
$255
8/28Wed
2 stopsDelta
8h 51mDCA-IDA
$260
8/29Thu
2 stops
24h 40mIAD-IDA
$307
8/28Wed
1 stopDelta
6h 58mBWI-IDA
$309
8/29Thu
1 stop
15h 26mBWI-IDA
$343
8/28Wed
1 stopUnited Airlines
6h 46mDCA-IDA
$384
5/24Fri
1 stopUnited Airlines
21h 07mIAD-IDA
$386
8/29Thu
1 stopAmerican Airlines
9h 21mDCA-IDA
$386

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Last minute flights from Washington, D.C. to Idaho Falls

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Washington, D.C. to Idaho Falls that are departing in the next 10 days.
3/29Fri
multi-stopUnited Airlines
6h 40mIAD-IDA
4/2Tue
multi-stopUnited Airlines
6h 44mIDA-IAD
$839
3/29Fri
multi-stopAmerican Airlines
8h 26mDCA-IDA
4/2Tue
multi-stopAmerican Airlines
11h 09mIDA-DCA
$847
3/29Fri
multi-stopAmerican Airlines
10h 28mDCA-IDA
4/1Mon
multi-stopAmerican Airlines
10h 24mIDA-DCA
$849
3/29Fri
multi-stopAmerican Airlines
12h 55mDCA-IDA
4/2Tue
multi-stopAmerican Airlines
11h 09mIDA-DCA
$851
3/29Fri
multi-stopAmerican Airlines
12h 55mDCA-IDA
4/1Mon
multi-stopAmerican Airlines
10h 24mIDA-DCA
$852
3/29Fri
multi-stopUnited Airlines
26h 59mIAD-IDA
4/2Tue
multi-stopUnited Airlines
6h 44mIDA-IAD
$860
3/29Fri
multi-stopAmerican Airlines
8h 26mDCA-IDA
4/2Tue
multi-stopAmerican Airlines
7h 37mIDA-DCA
$916
3/29Fri
multi-stopUnited Airlines
9h 15mIAD-IDA
4/1Mon
multi-stopUnited Airlines
18h 42mIDA-IAD
$940
3/29Fri
multi-stopUnited Airlines
22h 04mIAD-IDA
4/1Mon
multi-stopUnited Airlines
18h 42mIDA-IAD
$956
3/29Fri
multi-stopDelta
9h 12mIAD-IDA
4/2Tue
multi-stopDelta
13h 08mIDA-IAD
$1,021

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Flights to Idaho Falls

Destination:

Idaho Falls (IDA)United States

Return flight deals:

Idaho Falls - Washington, D.C.

Cabin classes: