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$136 Find cheap flights from Idaho to Washington Dulles Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Dulles Intl departing on 6/20. 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
Fri 6/21
Fri 6/28

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In the last 7 days travelers have searched 43,423,329 times on KAYAK, and here is why:

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Good to know

Low season

January

High season

May

Cheapest flight

$136
Best time to beat the crowds with an average 4% drop in price.
Most popular time to fly with an average 1% increase in price.
Flight from Spokane to Washington Dulles Airport

FAQs for booking Idaho to Washington Dulles Airport flights

  • How does KAYAK find such low prices on flights from Idaho to Washington Dulles 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 to Washington Dulles Airport.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington Dulles Airport from Idaho 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 to Washington Dulles 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 Washington Dulles Airport with an airline and back to Idaho with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Idaho to Washington Dulles 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 Washington Dulles Airport from Idaho up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Prefer to fly non-stop from Idaho to Washington Dulles Airport?

Find which airlines fly direct from Idaho to Dulles Intl, which days they fly and book direct flights.

Nonstop departures

Idaho to Washington, D.C. Dulles Intl

Monday

ANA, ASKY, Aer Lingus, +67 more

ANA, ASKY, +68 more

Tuesday

ANA, ASKY, Aer Lingus, +67 more

ANA, ASKY, +68 more

Wednesday

ANA, ASKY, Aer Lingus, +65 more

ANA, ASKY, +66 more

Thursday

ANA, ASKY, Aer Lingus, +68 more

ANA, ASKY, +69 more

Friday

ANA, ASKY, Aer Lingus, +68 more

ANA, ASKY, +69 more

Saturday

ANA, ASKY, Aer Lingus, +67 more

ANA, ASKY, +68 more

Sunday

ANA, ASKY, Aer Lingus, +68 more

ANA, ASKY, +69 more

See more direct flights

Nonstop returns

Washington, D.C. Dulles Intl to Idaho

Monday

ANA, ASKY, Aer Lingus, +67 more

ANA, ASKY, +68 more

Tuesday

ANA, ASKY, Aer Lingus, +67 more

ANA, ASKY, +68 more

Wednesday

ANA, ASKY, Aer Lingus, +65 more

ANA, ASKY, +66 more

Thursday

ANA, ASKY, Aer Lingus, +68 more

ANA, ASKY, +69 more

Friday

ANA, ASKY, Aer Lingus, +68 more

ANA, ASKY, +69 more

Saturday

ANA, ASKY, Aer Lingus, +67 more

ANA, ASKY, +68 more

Sunday

ANA, ASKY, Aer Lingus, +68 more

ANA, ASKY, +69 more

See more direct flights
See more direct flights

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

Recent round-trip flight deals

8/14Wed
1 stopSun Country Air
15h 05mBOI-IAD
8/21Wed
1 stopSun Country Air
7h 55mIAD-BOI
$299
8/14Wed
1 stopAmerican Airlines
7h 12mGEG-IAD
8/20Tue
1 stopAmerican Airlines
10h 34mIAD-GEG
$325
9/18Wed
1 stopDelta
9h 26mGEG-IAD
9/21Sat
1 stopDelta
7h 31mIAD-GEG
$328
7/10Wed
1 stop
14h 27mBOI-IAD
7/15Mon
2 stops
26h 42mIAD-BOI
$330
9/4Wed
2 stopsDelta
11h 46mGEG-IAD
9/11Wed
1 stopDelta
7h 43mIAD-GEG
$333
7/10Wed
2 stops
20h 12mBOI-IAD
7/15Mon
2 stops
26h 42mIAD-BOI
$338
9/14Sat
1 stopAlaska Airlines
8h 33mBOI-IAD
9/16Mon
1 stopAlaska Airlines
26h 16mIAD-BOI
$364
9/13Fri
1 stopAlaska Airlines
19h 04mBOI-IAD
9/16Mon
1 stopAlaska Airlines
16h 34mIAD-BOI
$366
8/6Tue
1 stopUnited Airlines
10h 02mBOI-IAD
8/9Fri
1 stopUnited Airlines
11h 12mIAD-BOI
$388
6/18Tue
1 stopUnited Airlines
6h 38mBOI-IAD
6/25Tue
1 stopUnited Airlines
9h 02mIAD-BOI
$394

Search by stops

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Recent one-way flight deals

6/20Thu
1 stopSun Country Air
16h 32mGEG-IAD
$136
6/13Thu
1 stopSun Country Air
16h 17mGEG-IAD
$153
8/13Tue
1 stopAmerican Airlines
7h 12mGEG-IAD
$163
6/20Thu
2 stops
17h 23mBOI-IAD
$168
6/3Mon
2 stops
15h 48mBOI-IAD
$169
7/4Thu
1 stopAlaska Airlines
9h 31mBOI-IAD
$183
7/26Fri
1 stopDelta
8h 30mBOI-IAD
$188
7/4Thu
2 stopsDelta
14h 18mBOI-IAD
$193
6/12Wed
1 stopAlaska Airlines
9h 00mBOI-IAD
$194
9/10Tue
2 stopsAmerican Airlines
9h 45mJAC-IAD
$274

Search by stops

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Search by price

Last minute flights from Idaho to Dulles Intl

Last minute flight, train and bus deals

5/23Thu
multi-stop
39h 20mBOI-IAD
5/27Mon
multi-stop
33h 30mIAD-BOI
$562
5/24Fri
multi-stop
21h 07mBOI-IAD
5/28Tue
multi-stop
33h 01mIAD-BOI
$604
5/25Sat
multi-stopUnited Airlines
22h 26mJAC-IAD
5/29Wed
multi-stopUnited Airlines
14h 22mIAD-JAC
$697
5/25Sat
multi-stopUnited Airlines
6h 27mJAC-IAD
5/29Wed
multi-stopUnited Airlines
14h 22mIAD-JAC
$759
5/23Thu
multi-stopAmerican Airlines
17h 19mBOI-IAD
5/27Mon
multi-stopAmerican Airlines
14h 30mIAD-BOI
$773
5/24Fri
multi-stopAlaska Airlines
9h 00mBOI-IAD
5/28Tue
multi-stopAlaska Airlines
9h 07mIAD-BOI
$844
5/24Fri
multi-stopAmerican Airlines
16h 01mBOI-IAD
5/28Tue
multi-stopAmerican Airlines
18h 51mIAD-BOI
$848
5/25Sat
multi-stopDelta
8h 13mJAC-IAD
5/29Wed
multi-stopDelta
10h 46mIAD-JAC
$850
5/23Thu
multi-stopAmerican Airlines
8h 51mBOI-IAD
5/27Mon
multi-stopAmerican Airlines
7h 55mIAD-BOI
$894
5/24Fri
multi-stopUnited Airlines
6h 38mBOI-IAD
5/28Tue
multi-stopUnited Airlines
14h 42mIAD-BOI
$896

Search by stops

Search by airline

Search by price