Cheap Flights from Washington D.C. to Idaho Falls

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Compare Washington D.C. to Idaho Falls flight deals

Find the cheapest month or even day of the year to fly to Idaho Falls

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Flight deals from Washington D.C. to Idaho Falls

Looking for a cheap last-minute deal or the best return flight from Washington D.C. to Idaho Falls Airport? If you want to travel next month, return fares start from $610. Find the lowest prices on one-way and return tickets right here.

Idaho Falls.$612 per passenger.Departing Sat, 5 Sep, returning Mon, 14 Sep.Return flight with United.Outbound indirect flight with United, departs from Washington Dulles on Sat, 5 Sep, arriving in Idaho Falls.Inbound indirect flight with United, departs from Idaho Falls on Mon, 14 Sep, arriving in Washington Dulles.Price includes taxes and charges.From $612, select.

Idaho Falls.$612 per passenger.Departing Fri, 28 Aug, returning Sun, 30 Aug.Return flight with Delta.Outbound indirect flight with Delta, departs from Baltimore Washington International on Fri, 28 Aug, arriving in Idaho Falls.Inbound indirect flight with Delta, departs from Idaho Falls on Sun, 30 Aug, arriving in Baltimore Washington International.Price includes taxes and charges.From $612, select.

Idaho Falls.$685 per passenger.Departing Fri, 2 Oct, returning Sat, 3 Oct.Return flight with United.Outbound indirect flight with United, departs from Washington Dulles on Fri, 2 Oct, arriving in Idaho Falls.Inbound indirect flight with United, departs from Idaho Falls on Sat, 3 Oct, arriving in Washington Dulles.Price includes taxes and charges.From $685, select.

Idaho Falls.$689 per passenger.Departing Mon, 31 Aug, returning Thu, 3 Sep.Return flight with United.Outbound indirect flight with United, departs from Washington Dulles on Mon, 31 Aug, arriving in Idaho Falls.Inbound indirect flight with United, departs from Idaho Falls on Thu, 3 Sep, arriving in Washington Dulles.Price includes taxes and charges.From $689, select.

Idaho Falls.$1,033 per passenger.Departing Sat, 27 Feb, returning Sat, 6 Mar.Return flight with United.Outbound indirect flight with United, departs from Washington Dulles on Sat, 27 Feb, arriving in Idaho Falls.Inbound indirect flight with United, departs from Idaho Falls on Sat, 6 Mar, arriving in Washington Dulles.Price includes taxes and charges.From $1,033, select.

Idaho Falls.$1,211 per passenger.Departing Sun, 20 Dec, returning Wed, 30 Dec.Return flight with Delta.Outbound indirect flight with Delta, departs from Washington Ronald Reagan on Sun, 20 Dec, arriving in Idaho Falls.Inbound indirect flight with Delta, departs from Idaho Falls on Wed, 30 Dec, arriving in Baltimore Washington International.Price includes taxes and charges.From $1,211, select.

Idaho Falls.$1,254 per passenger.Departing Sun, 27 Sep, returning Sun, 4 Oct.Return flight with United.Outbound indirect flight with United, departs from Washington Dulles on Sun, 27 Sep, arriving in Idaho Falls.Inbound indirect flight with United, departs from Idaho Falls on Sun, 4 Oct, arriving in Washington Dulles.Price includes taxes and charges.From $1,254, select.

Idaho Falls.$1,304 per passenger.Departing Thu, 22 Apr, returning Sun, 25 Apr.Return flight with Delta.Outbound indirect flight with Delta, departs from Washington Dulles on Thu, 22 Apr, arriving in Idaho Falls.Inbound indirect flight with Delta, departs from Idaho Falls on Sun, 25 Apr, arriving in Washington Ronald Reagan.Price includes taxes and charges.From $1,304, select.

Idaho Falls.$1,323 per passenger.Departing Sat, 27 Mar, returning Sat, 3 Apr.Return flight with Delta.Outbound indirect flight with Delta, departs from Washington Ronald Reagan on Sat, 27 Mar, arriving in Idaho Falls.Inbound indirect flight with Delta, departs from Idaho Falls on Sat, 3 Apr, arriving in Washington Ronald Reagan.Price includes taxes and charges.From $1,323, select.

Idaho Falls.$3,459 per passenger.Departing Sat, 3 Jul, returning Sat, 10 Jul.Return flight with United.Outbound indirect flight with United, departs from Washington Ronald Reagan on Sat, 3 Jul, arriving in Idaho Falls.Inbound indirect flight with United, departs from Idaho Falls on Sat, 10 Jul, arriving in Washington Ronald Reagan.Price includes taxes and charges.From $3,459, select.

Find the cheapest month to fly from Washington D.C. to Idaho Falls

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Washington D.C. to Idaho Falls flights are currently cheapest in August.

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Washington D.C. to Idaho Falls: Alternative routes

Compare routes from Washington D.C. to Idaho Falls below. You may find an airport to fly into that's cheaper, faster, or easier than Idaho Falls.

Idaho Falls

4km from central Idaho Falls

ClosestCheapest

from $610

Search flights

Pocatello

79km from central Idaho Falls

from $838

Search flights

Washington D.C. to Idaho Falls: Flight information

The things to know before you go.

Cheapest flight found	$610
Cheapest month to fly	August

Finding cheap flights from Washington D.C. to Idaho Falls: Frequently asked questions

How much are return flights from Washington D.C. to Idaho Falls?

The best price we found for a return flight from Washington D.C. to Idaho Falls is $610. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

Which airlines fly direct from Washington D.C. to Idaho Falls?

Currently, there are no airlines that fly direct from Washington D.C. to Idaho Falls. But we found flights with one stop from $612.

How many flights are there a week from Washington D.C. to Idaho Falls?

As of August 2026, there are no flights flying from Washington D.C. to Idaho Falls.

When is the cheapest time to fly from Washington D.C. to Idaho Falls?

The cheapest month to fly from Washington D.C. to Idaho Falls is usually August.

Which upcoming date is cheapest to fly from Washington D.C. to Idaho Falls Airport on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Washington D.C. to Idaho Falls Airport on Friday, 28 August 2026.

Can I get a direct flight from Washington D.C. to Idaho Falls Airport?

No airlines currently offer direct flights between Washington D.C. and Idaho Falls Airport. Most routes have one or more stops.

How can I find the best flight deal to Idaho Falls?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Idaho Falls but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to Idaho Falls?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Idaho Falls is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly from Washington D.C. to Idaho Falls with?

The cheapest airline that flies to Idaho Falls is Delta .

Travelling from Washington DC to Idaho Falls Regional Airport (IDA): What you need to know

Idaho Falls is two hours behind Washington DC. Idaho Falls Regional Airport is located in Idaho Falls, which operates on the UTC-7 timezone.
Arriving two hours before an international flight and one hour ahead of a domestic departure are golden rules for hassle-free flying. Show up at the airport on time to board your flight from Washington DC to IDA.
If you're flying during a popular month like July, be at the airport even earlier. It's wise to arrive up to four hours before an international flight and two hours ahead of domestic departures. Check-in and security lines are longer during high seasons like Christmas, New Year and spring break.

Airports in Washington DC

Ronald Reagan Washington National Airport (DCA)

Located around 6 kilometres from central Washington DC, DCA can be reached in about 10 minutes by car, depending on traffic. The journey on public transport will take roughly 25 minutes.
Planning to catch an early flight from Washington DC to Idaho Falls Regional Airport? Avoid rushing to the terminal (and catch some extra z's) by staying at one of these hotels close to Ronald Reagan Washington National Airport:
71% of flights that take off from Ronald Reagan Washington National Airport touch down at their destination on time.
You'll find DCA at 1 Aviation Circle.

Washington Dulles International Airport (IAD)

You can reach IAD from the centre of Washington DC in about 45 minutes by car, depending on traffic conditions. The ride by public transport will take roughly 1 hour 10 minutes to cover the 40 kilometres or so.
Want to enjoy an extra night away before catching your Washington DC to IDA flight? Kick back in a hotel near Washington Dulles International Airport before your holiday officially begins. These stays have your key waiting:
Washington Dulles International Airport has an on-time performance of 77%. This figure reflects how often flights that take off from this airport make it to their destination on time.
IAD is located at 1 Saarinen Circle.

Baltimore Washington International Airport (BWI)

The journey to BWI from central Washington DC is around 50 minutes on public transport. If you're planning to travel by car, it'll take you about 40 minutes to cover the 48 kilometres or so.
Make catching an early Washington DC to Idaho Falls Regional Airport flight the easiest part of your journey. Book a room at one of these accommodation options close to Baltimore Washington International Airport and get to your departure gate with plenty of time to spare:
Airports have an on-time performance rating that monitors how often flights touch down as expected. At BWI, that figure is 77%.

About Idaho Falls Regional Airport (IDA)

The last thing you want is a long journey to your hotel if you're getting in late on a flight from Washington DC to Idaho Falls Regional Airport. Stay at one of these accommodation options near IDA instead:
IDA is located at 2140 North Skyline.

Getting from Idaho Falls Regional Airport (IDA) to central Idaho Falls

From Idaho Falls Regional Airport, central Idaho Falls is around 8 kilometres away. It takes about 10 minutes to reach the city centre by car.
Travelling on public transport typically takes 30 minutes.

How to find the cheapest flights from Washington DC to Idaho Falls Regional Airport (IDA)

Currently, $323 is the best price we've found for a one-way ticket from Washington DC to Idaho Falls Regional Airport. The cheapest price for a return flight is $612. Keep in mind fares can change due to availability at the time of booking.
Don't wait until the last moment. You're more likely to walk away with cheap flights from Washington DC to IDA if you book ahead. Airlines often have some excellent early bird discounts.
The 'Whole month' tool will show you the cheapest Washington DC to Idaho Falls Regional Airport tickets across each month. It's an easy way to find a bargain if your travel plans are flexible.
You don't need to check back in every day to find out if fares have dropped when you set up a Price Alert. We'll let you know as soon as a better deal comes up on plane tickets from Washington DC to IDA.
Filters make it easier to land a deal on your flight from Washington DC to Idaho Falls Regional Airport. Pick the departure times, carriers and stops that work for you. Then sort the results by 'Cheapest' to find the most affordable option fast.

The best time to fly from Washington DC to Idaho Falls Regional Airport (IDA)

It's time to figure out your travel dates for your flight from Washington DC to Idaho Falls Regional Airport (IDA). July is the most popular month to visit Idaho Falls. If you prefer a quieter vibe, head there in December.
When booking your Washington DC to IDA plane ticket, consider what kind of weather works for you. July is the warmest month in Idaho Falls, with temperatures ranging from 9ºC to 35ºC.
January sees temperatures of between -15ºC and 1ºC. Search for cheap tickets from Washington DC to Idaho Falls Regional Airport around that time if you want to travel in cooler conditions.

More about Idaho Falls

Start your Idaho Falls trip off on the right foot by choosing the perfect place to stay. After booking your flight from Washington DC to Idaho Falls Regional Airport, explore our selection of accommodation options including:
Snake River Greenbelt and Idaho Falls River Walk are just a couple of the big attractions to put on your Idaho Falls itinerary. Continue your sightseeing adventures at East Idaho Aquarium.

Explore more of the United States

Ogden is just one of the many cities in the United States waiting to be explored once you've seen Idaho Falls. Around 257 kilometres away to the south, check out popular attractions including Snowbasin Resort, Dinosaur Park and Museum and Ogden Botanical Gardens.
Any trip through the United States wouldn't be as memorable without a stop in Layton. SeaQuest Utah and Layton Utah Temple are among the highlights in this destination, which is around 274 kilometres south of Idaho Falls.