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Cheap flights from Boise to Washington Dulles

Compare Boise to Washington Dulles flight deals

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Flight deals from Boise to Washington Dulles

Looking for a cheap last-minute deal or the best round-trip flight from Boise Airport to Washington Dulles Airport? If you want to travel next month, round-trip fares start from $242. Find the lowest prices on one-way and round-trip tickets right here.
Washington, D.C..$242 per passenger.Departing Thu, Sep 10, returning Mon, Sep 14.Round-trip flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Boise on Thu, Sep 10, arriving in Washington Dulles.Inbound indirect flight with Frontier Airlines, departing from Washington Dulles on Mon, Sep 14, arriving in Boise.Price includes taxes and charges.From $242, select.
Washington, D.C..$285 per passenger.Departing Wed, Oct 14, returning Tue, Oct 20.Round-trip flight with Alaska Airlines.Outbound indirect flight with Alaska Airlines, departing from Boise on Wed, Oct 14, arriving in Washington Dulles.Inbound indirect flight with Alaska Airlines, departing from Washington Dulles on Tue, Oct 20, arriving in Boise.Price includes taxes and charges.From $285, select.
Washington, D.C..$302 per passenger.Departing Thu, Aug 27, returning Sat, Sep 5.Round-trip flight with Delta.Outbound indirect flight with Delta, departing from Boise on Thu, Aug 27, arriving in Washington Dulles.Inbound indirect flight with Delta, departing from Washington Dulles on Sat, Sep 5, arriving in Boise.Price includes taxes and charges.From $302, select.
Washington, D.C..$303 per passenger.Departing Sat, Sep 19, returning Sat, Oct 3.Round-trip flight with United.Outbound indirect flight with United, departing from Boise on Sat, Sep 19, arriving in Washington Dulles.Inbound indirect flight with United, departing from Washington Dulles on Sat, Oct 3, arriving in Boise.Price includes taxes and charges.From $303, select.
Washington, D.C..$303 per passenger.Departing Tue, Oct 20, returning Tue, Nov 3.Round-trip flight with United.Outbound indirect flight with United, departing from Boise on Tue, Oct 20, arriving in Washington Dulles.Inbound indirect flight with United, departing from Washington Dulles on Tue, Nov 3, arriving in Boise.Price includes taxes and charges.From $303, select.
Washington, D.C..$333 per passenger.Departing Fri, Aug 21, returning Mon, Aug 31.Round-trip flight with Delta.Outbound indirect flight with Delta, departing from Boise on Fri, Aug 21, arriving in Washington Dulles.Inbound indirect flight with Delta, departing from Washington Dulles on Mon, Aug 31, arriving in Boise.Price includes taxes and charges.From $333, select.
Washington, D.C..$347 per passenger.Departing Fri, Dec 11, returning Mon, Jan 18.Round-trip flight with Alaska Airlines.Outbound indirect flight with Alaska Airlines, departing from Boise on Fri, Dec 11, arriving in Washington Dulles.Inbound indirect flight with Alaska Airlines, departing from Washington Dulles on Mon, Jan 18, arriving in Boise.Price includes taxes and charges.From $347, select.
Washington, D.C..$376 per passenger.Departing Fri, Nov 13, returning Sun, Nov 15.Round-trip flight with Delta.Outbound indirect flight with Delta, departing from Boise on Fri, Nov 13, arriving in Washington Dulles.Inbound indirect flight with Delta, departing from Washington Dulles on Sun, Nov 15, arriving in Boise.Price includes taxes and charges.From $376, select.
Washington, D.C..$401 per passenger.Departing Wed, May 26, returning Thu, Jun 3.Round-trip flight with Alaska Airlines.Outbound indirect flight with Alaska Airlines, departing from Boise on Wed, May 26, arriving in Washington Dulles.Inbound indirect flight with Alaska Airlines, departing from Washington Dulles on Thu, Jun 3, arriving in Boise.Price includes taxes and charges.From $401, select.
Washington, D.C..$448 per passenger.Departing Mon, Jan 4, returning Tue, Jan 5.Round-trip flight with Alaska Airlines.Outbound indirect flight with Alaska Airlines, departing from Boise on Mon, Jan 4, arriving in Washington Dulles.Inbound indirect flight with Alaska Airlines, departing from Washington Dulles on Tue, Jan 5, arriving in Boise.Price includes taxes and charges.From $448, select.
Washington, D.C..$638 per passenger.Departing Fri, Dec 18, returning Mon, Dec 28.Round-trip flight with Delta.Outbound indirect flight with Delta, departing from Boise on Fri, Dec 18, arriving in Washington Dulles.Inbound indirect flight with Delta, departing from Washington Dulles on Mon, Dec 28, arriving in Boise.Price includes taxes and charges.From $638, select.
Washington, D.C..$1,064 per passenger.Departing Mon, Mar 15, returning Mon, Mar 29.Round-trip flight with United.Outbound indirect flight with United, departing from Boise on Mon, Mar 15, arriving in Washington Dulles.Inbound indirect flight with United, departing from Washington Dulles on Mon, Mar 29, arriving in Boise.Price includes taxes and charges.From $1,064, select.

Find the cheapest month to fly from Boise to Washington Dulles

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Boise to Washington Dulles flights are currently cheapest in September.
Aug
from $333
Sep
from $242
Oct
from $285
Nov
from $376
Dec
from $638
Jan
from $448
Feb
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Mar
from $1,064
Apr
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May
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Jun
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Jul
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Boise to Washington Dulles: Alternative routes

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

Washington Ronald Reagan

5km from central Washington, D.C.
ClosestCheapest
from $204
Search flights

Washington Dulles

37km from central Washington, D.C.
from $242
Search flights

Baltimore Washington International

44km from central Washington, D.C.
from $285
Search flights

Boise to Washington, D.C.: Flight information

The things to know before you go.
Cheapest flight found$242
Cheapest month to flySeptember

Finding cheap flights from Boise to Washington Dulles: Frequently asked questions

The best price we found for a round-trip flight from Boise to Washington Dulles is $242. 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.
Currently, there are no airlines that fly direct from Boise to Washington Dulles. But we found flights with one or more stops from $242.
There are no flights flying from Boise to Washington Dulles, as of August 2026.
The cheapest month to fly from Boise to Washington Dulles is usually September.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Boise Airport to Washington Dulles Airport on Thursday, September 10, 2026.
No airlines currently offer direct flights between Boise Airport and Washington Dulles Airport. Most routes have one or more stops.
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 Washington Dulles 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.

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

Currently, Frontier Airlines offers the cheapest flight tickets to Washington Dulles.

Flying from Boise Airport (BOI) to Washington Dulles Airport (IAD): what you need to know

  • Washington DC is two hours ahead of Boise and is in the UTC-5 timezone.

  • Arriving two hours before an international flight and one hour ahead of a domestic departure are golden rules for stress-free travel. Get to the airport on time to board your BOI to IAD flight.

  • You can expect longer lines in popular months such as October. Arriving up to four hours ahead of international flights and two hours for domestic departures will give you ample time for security and boarding.

  • If you want to explore another city along the way, just deselect 'Direct flights only' when searching for your ticket from Boise Airport to Washington Dulles Airport. Here are the most popular stopovers between BOI and IAD:

    • Dallas Fort Worth International Airport

    • Denver International Airport

    • Minneapolis St Paul Airport

How to find the cheapest flights from Boise Airport (BOI) to Washington Dulles Airport (IAD)

  • $127 is the lowest price for a one-way Boise Airport to Washington Dulles Airport flight. A return flight starts at $242. These fares can change depending on availability and demand.

  • Don't wait until the last moment. You're more likely to find cheap tickets from BOI to IAD if you book ahead. Airlines often offer some terrific early bird discounts.

  • Finding cheap flights from Boise Airport to Washington Dulles Airport is easier if you're flexible with your dates. Use the 'Whole month' search function to see the lowest prices across every month and snap up a great deal.

  • You won't have to check back in every day to find out if fares have dropped when you set up a Price Alert. We'll update you the moment there's a new deal on cheap flights from BOI to IAD.

  • Tailor your trip using filters. Choose your preferred arrival and departure times, airlines and total journey duration. You can also sort your results by 'Fastest,' 'Cheapest' or 'Best' flights from Boise Airport to Washington Dulles Airport.

Handy information about Boise Airport (BOI)

  • BOI is located at 3201 Airport Way.

  • Boise Airport has an excellent on-time record, so flight disruptions are less likely. Departures from BOI arrive on schedule 84% of the time.

  • Central Boise to Boise Airport is around 6 kilometers. Depending on traffic, it'll take about 15 minutes to get there if you're ride-sharing, catching a cab or driving.

  • Catching public transport? You can expect a journey time of around 30 minutes.

  • Get your travels off to a stress-free start by staying near BOI. Whether you're boarding an early flight from Boise Airport to Washington Dulles Airport or just don't like being rushed, these stays have you covered:

Arriving at Washington Dulles Airport (IAD)

Getting from Washington Dulles Airport (IAD) to central Washington DC

  • You'll find IAD at 1 Saarinen Circle.

  • Washington Dulles Airport is roughly 40 kilometers from the center of Washington DC. The drive time takes around 45 minutes.

  • If you're using public transport, expect a journey time of roughly 1 hour 10 minutes.

When to fly to Washington Dulles Airport (IAD)

  • The quietest month for a flight from Boise Airport to Washington Dulles Airport is February, while July is the busiest. Choose the best time to go to Washington DC based on whether you prefer a more fast-paced or easygoing experience.

  • Book your flight from Boise Airport to Washington Dulles Airport for July if you want to go to Washington DC during its warmest month. Expect temperatures of between 19ºC (66ºF) and 33ºC (91ºF).

  • If you want to travel in cooler conditions, look for a cheap ticket from BOI to IAD in January. Temperatures average between -6ºC (21ºF) and 10ºC (50ºF) then.

Explore more of the United States

  • Washington DC has plenty going for it, but there are so many other corners of the United States you'll want to see. About 322 kilometers north-east of Washington DC, a visit to New York will keep your itinerary busy. Start with leading attractions like Central Park, Statue of Liberty and Metropolitan Museum of Art.

  • Around 193 kilometers north-east of Washington DC, Philadelphia is another favorite stop in the United States. Start your sightseeing at Independence Hall, Liberty Bell and Philadelphia Museum of Art.

Plan the rest of your trip from Boise to Washington, D.C.

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.