IDA - DCA

$175 Find Cheap Flights from Idaho Falls to Reagan Washington National Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Idaho Falls to Washington, D.C. departing on 9/9. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Washington, D.C. Reagan-National Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Idaho Falls to Washington, D.C., 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 Idaho Falls to Washington, D.C., as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$435
American Airlines
Tue 7/21Tue 7/28
IDA - DCA • 1 stop
Cheapest one-way
$175
American Airlines
Wed 9/9
IDA - DCA • 1 stop
Top airlines
American Airlines
Cheapest • from $435 (round-trip)
American Airlines
Best reviews • 7.1 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Idaho Falls and Washington, D.C.. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Seattle (SEA)
Cheapest • Avg $329 (round-trip)
Denver (DEN)
Shortest trip • 5h 59m (one-way)
Insights
Insights
Insights
Insights
When to travel
January
Cheapest • 100% price drop
February
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Washington, D.C.!
Flight Deals
Booking Insights
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Idaho Falls to Washington, D.C. 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 Idaho Falls to Washington, D.C.

Tue, Jul 21 - Tue, Jul 28
American Airlines Logo
12:53 pm - 11:59 pm
IDA
-
DCA
9h 06m
1 stop
American Airlines Logo
7:35 am - 1:23 pm
DCA
-
IDA
7h 48m
1 stop
$435American Airlines
Thu, Sep 24 - Mon, Sep 28
American Airlines Logo
1:44 pm - 11:59 pm
IDA
-
DCA
8h 15m
1 stop
American Airlines Logo
5:00 am - 11:32 am
DCA
-
IDA
8h 32m
1 stop
$440American Airlines
Fri, Aug 21 - Mon, Aug 24
Delta Logo
7:00 pm - 10:09 am
IDA
-
DCA
13h 09m
2 stops
Delta Logo
6:02 am - 6:20 pm
DCA
-
IDA
14h 18m
2 stops
$470Delta
Wed, Aug 5 - Sun, Aug 9
American Airlines Logo
2:20 pm - 11:58 pm
IDA
-
DCA
7h 38m
1 stop
American Airlines Logo
7:00 am - 1:42 pm
DCA
-
IDA
8h 42m
1 stop
$487American Airlines
Fri, Aug 21 - Mon, Aug 24
Delta Logo
7:00 pm - 10:09 am
IDA
-
DCA
13h 09m
2 stops
Delta Logo
6:02 am - 6:20 pm
DCA
-
IDA
14h 18m
2 stops
$494Delta
Tue, Aug 11 - Sat, Aug 15
American Airlines Logo
2:20 pm - 11:58 pm
IDA
-
DCA
7h 38m
1 stop
American Airlines Logo
2:59 pm - 9:20 pm
DCA
-
IDA
8h 21m
1 stop
$505American Airlines
Tue, Aug 11 - Sat, Aug 15
American Airlines Logo
2:20 pm - 11:58 pm
IDA
-
DCA
7h 38m
1 stop
American Airlines Logo
11:56 am - 9:20 pm
DCA
-
IDA
11h 24m
2 stops
$510American Airlines
Fri, Aug 21 - Mon, Aug 24
Delta Logo
7:00 pm - 10:09 am
IDA
-
DCA
13h 09m
2 stops
Delta Logo
6:02 am - 6:20 pm
DCA
-
IDA
14h 18m
2 stops
$519Delta
Wed, Aug 5 - Sat, Aug 8
American Airlines Logo
2:20 pm - 11:58 pm
IDA
-
DCA
7h 38m
1 stop
American Airlines Logo
3:12 pm - 9:20 pm
DCA
-
IDA
8h 08m
1 stop
$523American Airlines
Thu, Sep 3 - Thu, Sep 10
American Airlines Logo
2:20 pm - 11:58 pm
IDA
-
DCA
7h 38m
1 stop
American Airlines Logo
6:30 am - 12:12 pm
DCA
-
IDA
7h 42m
1 stop
$531American Airlines
Booking Insights

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

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

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

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Idaho Falls to Washington, D.C. Reagan-National Airport, 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 Idaho Falls to Washington, D.C. Reagan-National Airport is January, where tickets cost $0 (return) on average. On the other hand, the most expensive months are June and April, where the average cost of round-trip tickets is $1,008 and $865 respectively.

Find deals

Good to know

Low seasonDecember
Cheapest flight$175
Best time to beat the crowds with an average 70% drop in price.
Most popular time to fly with an average 11% increase in price.
Flight from Idaho Falls to Reagan Washington National Airport

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

Are your dates flexible? Find out the best times to travel from Idaho Falls to Washington, D.C. 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 Idaho Falls to Reagan Washington National Airport flights

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

    In the last 7 days, the lowest price for a flight from Idaho Falls to Washington, D.C. Reagan-National Airport was $175 for a one-way ticket and $435 for a round-trip.

  • Do I need a passport to fly between Idaho Falls and Reagan Washington National Airport?

    A passport is not required to fly from Idaho Falls to Reagan Washington National Airport.

  • Which aircraft models fly most regularly from Idaho Falls to Reagan Washington National Airport?

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

  • Which airline alliances offer flights from Idaho Falls to Reagan Washington National Airport?

    oneworld is the only airline alliance operating flights between Idaho Falls and Reagan Washington National Airport.

  • How does KAYAK find such low prices on flights from Idaho Falls to Reagan Washington National Airport?

    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 Idaho Falls to Reagan Washington National Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Idaho Falls to Reagan Washington National Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Reagan Washington National Airport from Idaho Falls 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 Idaho Falls to Reagan Washington National Airport?

    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 Reagan Washington National Airport with an airline and back to Idaho Falls with another airline. Booking your flights between Idaho Falls and DCA 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 Idaho Falls to Reagan Washington National Airport?

    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 Reagan Washington National Airport from Idaho Falls up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Idaho Falls to Washington, D.C.

 
See real verified KAYAK customer reviews for airlines flying from Idaho Falls to Washington, D.C.. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Idaho Falls to Washington, D.C.? 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 verified KAYAK customer reviews.
7.1
American AirlinesOverall score based on 11626 reviews
7.2Comfort
7.9Crew
6.4Food
7.5Boarding
6.9Entertainment
Airline reviews

The airplane was an old model, the overhead didn’t have enough room for people’s items and made boarding and boarding disappointing and stressful. Crew allowed passengers to bring more than the permitted baggage sizes.

2.0 MediocreStella, Apr 2026
ORD - DCA
Read more American Airlines reviews

The airplane was an old model, the overhead didn’t have enough room for people’s items and made boarding and boarding disappointing and stressful. Crew allowed passengers to bring more than the permitted baggage sizes.

It was great. Smooth flight, comfortable, left on time and landed on time.

Horrible experience upon landing. Probably more due to DCA utter incompetence than AA.

Easy boarding. Rows are smaller but that may be an older and bigger me now :)

Flight has been delayed every time I've ever taken it. Seats uncomfortable. Children behind me yelling the entire flight. Some of this is out of their control but overall just consistently not a great experience.

Poor communication ahead of time about flight delays and old planes/other equipment.

Never going to fly your airline again if it can be avoided.

Not to have gotten delayed by 2+ hours for the fourth straight American flight. They're the worst.

Other than nearly three hour delay for maintenance issues, everything went smooth

Snow delayed boarding several times, which I understand happens. Issue I had was that after we did board, pilot told us we were going to roll out to be de-iced, then on our way. We were de-iced once, taxied to the tarmac and then stopped. Sat for another 30 minutes or so, the another de-icing. Then we rolled out to a parking spot, only to sit for another hour due to a traffic stop in DCA, which I'm confident they knew would happen before we boarded. Pilot gave no updates other than we had to hold, attendants did speak to the crew, but when asked, said the pilot would be updating us. We on the ground in the plane waiting for over 2 hours. They did communicate that bathrooms would be open, but no other news until we left. Would have been better to be up front about status.

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

Information on your arrival and departure airports

Idaho Falls (IDA)
Reagan-National (DCA)