Cheap flights from Idaho to Washington, D.C. from $87
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Idaho to Washington, D.C. departing on 6/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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1 adult
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0 bags
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Round-trip
One-way
Last minute
Cheap round-trip flights
These are some of the best round-trip flight deals from Idaho to Washington, D.C. that have been recently found on momondo from popular airlines, departing in the coming months.
Cheap one-way flights
Flying one-way? These are some of the best deals recently discovered on momondo for flights from Idaho to Washington, D.C..
Cheap last minute flights
Planning a quick getaway from Idaho to Washington, D.C.? These are the last-minute flight deals available now.
Alaska Airlines flights from Idaho to Washington, D.C.
Our best Alaska Airlines deals on Idaho to Washington, D.C. flight tickets
Alaska Airlines![Alaska Airlines]()
May 21![Alaska Airlines]()
May 25
GEG11:33 amSpokane
9h 26m
1 stop
IAD11:59 pmWashington, D.C. Dulles Intl
IAD5:14 pmWashington, D.C. Dulles Intl
9h 33m
1 stop
GEG11:47 pmSpokane
Alaska Airlines![Alaska Airlines]()
May 10![Alaska Airlines]()
May 14
BOI9:18 amBoise Air Term. Gowen Fld
10h 41m
1 stop
DCA9:59 pmWashington, D.C. Reagan-National
DCA6:35 pmWashington, D.C. Reagan-National
24h 36m
1 stop
BOI5:11 pmBoise Air Term. Gowen Fld
Delta flights from Idaho to Washington, D.C.
Our best Delta deals on Idaho to Washington, D.C. flight tickets
Delta![Delta]()
Jul 26![Delta]()
Aug 4
GEG11:41 amSpokane
8h 40m
1 stop
IAD11:21 pmWashington, D.C. Dulles Intl
IAD6:00 amWashington, D.C. Dulles Intl
8h 11m
1 stop
GEG11:11 amSpokane
Delta![Delta]()
May 31![Delta]()
Jun 6
BOI1:18 pmBoise Air Term. Gowen Fld
8h 17m
1 stop
IAD11:35 pmWashington, D.C. Dulles Intl
IAD7:45 amWashington, D.C. Dulles Intl
10h 34m
1 stop
BOI4:19 pmBoise Air Term. Gowen Fld
See travel insights to Washington, D.C. from
How to get the cheapest flight ticket from Idaho to Washington, D.C.
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
Prices
Airlines
Other information
What is the cheapest month to fly to Washington, D.C.?
The month of February is, on average, the cheapest month to fly to Washington, D.C. from Idaho, with most prices found around $361. If you’re not able to fly to Washington, D.C. in February, then April is your next best option. Flight prices from Idaho to Washington, D.C. during April average around $374.
What is the cheapest day to depart on your flight to Washington, D.C.?
On average, the least expensive day to fly to Washington, D.C. from Idaho is on a Saturday. momondo users have found tickets for Saturday departures for as low as $436. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Idaho to Washington, D.C. for around $551.
What is the cheapest time of day to depart on your flight to Washington, D.C.?
In the afternoon is the cheapest time of day to fly from Idaho to Washington, D.C. when you can find flight prices for as low as $433. Flying to Washington, D.C. in the afternoon is an ideal time because this is during off-peak travel hours. Try not to purchase tickets at noon because they tend to be around $547. Of course, these prices can vary depending on the time of year and what airport you fly to.
How far in advance should I book a flight to Washington, D.C.?
You are more likely to see cheaper flights to Washington, D.C. from Idaho when booking 19 weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. for around $524 when searching 19 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. from Idaho for as low as $358 on momondo.
What is the cheapest airline that flies from Idaho to Washington, D.C.?
Frontier, American Airlines, and Alaska Airlines are the most popular carriers operating from Idaho to Washington, D.C.
What airlines fly to Washington, D.C.?
Delta, United Airlines and Southwest are the top three most popular airlines that fly to Washington, D.C. from Idaho according to our data. Delta is the first choice among our users, with 47% of people opting to fly with this airline when traveling to Washington, D.C.. Keep in mind that there are 5 different airlines that fly to Washington, D.C. on a routine basis, so you have a few additional options to choose from.
How many flights depart from Idaho to Washington, D.C. on average per week?
The number of flights available between Idaho and Washington, D.C. is 3 per week as of May 2025. The most frequent departure day is Mon, with 33% of weekly flights leaving on this day.
How long does it take to fly to Washington, D.C.?
Flight times from Idaho to Washington, D.C. vary, but if you’re flying out of Boise and flying into Washington, D.C. Dulles Intl Airport (one of the most popular routes), then the duration is 6h 19m on average. Another popular route from Idaho to Washington, D.C. is flying from Idaho Falls to Washington, D.C. Dulles Intl Airport, which will take roughly 6h 26m. Keep in mind that layovers or delays could extend your travel time.
Cheap Idaho to Washington, D.C. flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Idaho to Washington, D.C.
Best Price Found | $87 |
|---|---|
Fastest flight time | 5h 50m |
Direct flights | None |
Airports in Washington, D.C. | 3 airports |
When did momondo last update prices for flights from Idaho to Washington, D.C.?
Prices for flights from Idaho to Washington, D.C. were last updated today.
How many operators does momondo search for flights from Idaho to Washington, D.C.?
As of May 2025, there are 5 operators available to choose from for flights from Idaho to Washington, D.C..
How old do you have to be to fly from Idaho to Washington, D.C.?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Idaho to Washington, D.C..
What documentation or ID do you need to fly to Washington, D.C.?
The necessary travel and health documents for your Washington, D.C. trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
Best airlines flying from Idaho to Washington, D.C.
Compare and see reviews for airlines that fly from Idaho to Washington, D.C. with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $141 | Free Cancellation | Rating 8.0 9,985 reviews | |||
| PriceFrom $300 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $300 | Free Cancellation | Rating 7.4 8,701 reviews | |||
| PriceFrom $300 | Free Cancellation | Rating 8.0 7,941 reviews | |||
| PriceFrom $346 | Free Cancellation | Rating 8.0 4,292 reviews |
Traveling to a place near Washington, D.C.?
Book flights to Washington, D.C. if you plan to visit one of these locationsAlexandria
Arlington
Gettysburg
National Harbor
Laurel
Silver Spring
Woodbridge
Tysons
Fredericksburg
Waldorf
Manassas
Gaithersburg
Towson
Rockville
Glen Burnie
Fairfax
Linthicum Heights
Reston
Hyattsville
Springfield
Why use momondo?
Why should I use momondo to find a flight deal from Idaho to Washington, D.C.?
We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Idaho to Washington, D.C. for you.
Can I find flights from Idaho to Washington, D.C. with flexible booking policies on momondo?
Yes. momondo enables you to select and highlight flights to Washington, D.C. from Idaho with this policy.
How can momondo help me find flights from Idaho to Washington, D.C.?
momondo helps you find the best flight between Idaho and Washington, D.C. by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.
I’m not ready to book a flight from Idaho to Washington, D.C. right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to Washington, D.C. from Idaho. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.