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Cheap flights from Billings to Washington, D.C. from $204

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Billings to Washington, D.C. departing on 12/5. 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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Cheap round-trip flights

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Alaska Airlines Logo
2:02 pm - 4:36 pmBIL-IAD
24h 34m1 stop
Alaska Airlines Logo
6:30 pm - 12:08 amIAD-BIL
31h 38m1 stop
$364Alaska Airlines
Find Deal
Fri, Dec 5 - Fri, Dec 12
Alaska Airlines Logo
3:36 pm - 4:36 pmBIL-IAD
23h 00m2 stops
Alaska Airlines Logo
6:30 pm - 12:08 amIAD-BIL
31h 38m1 stop
$394Alaska Airlines
Find Deal
Fri, Dec 5 - Fri, Dec 12
Alaska Airlines Logo
7:40 am - 5:55 pmBIL-IAD
8h 15m1 stop
Alaska Airlines Logo
7:00 am - 1:15 pmIAD-BIL
32h 15m2 stops
$402Alaska Airlines
Find Deal
Thu, Feb 26 - Mon, Mar 2
Alaska Airlines Logo
7:40 am - 5:55 pmBIL-IAD
8h 15m1 stop
Alaska Airlines Logo
7:00 am - 10:43 pmIAD-BIL
17h 43m1 stop
$408Alaska Airlines
Find Deal
Thu, Mar 5 - Thu, Mar 12
Delta Logo
6:15 am - 1:55 pmBIL-IAD
5h 40m1 stop
Delta Logo
12:30 pm - 10:37 pmIAD-BIL
12h 07m2 stops
$414Delta
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Tue, Mar 31 - Wed, Apr 1
Delta Logo
11:47 am - 12:02 amBIL-IAD
10h 15m2 stops
Delta Logo
5:03 pm - 11:48 pmIAD-BIL
8h 45m2 stops
$419Delta
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Fri, Dec 5 - Fri, Dec 12
United Airlines Logo
10:54 am - 7:08 pmBIL-IAD
6h 14m1 stop
United Airlines Logo
10:23 pm - 9:21 pmIAD-BIL
24h 58m2 stops
$450United Airlines
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Mon, Dec 8 - Mon, Dec 8
United Airlines Logo
7:00 am - 4:40 pmBIL-IAD
7h 40m1 stop
United Airlines Logo
2:12 pm - 8:54 pmIAD-BIL
8h 42m1 stop
$479United Airlines
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Wed, Mar 18 - Sat, Mar 21
American Airlines Logo
2:03 pm - 10:15 pmBIL-IAD
6h 12m1 stop
American Airlines Logo
2:01 pm - 10:18 pmIAD-BIL
10h 17m2 stops
$508American Airlines
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Wed, Mar 18 - Sat, Mar 21
American Airlines Logo
2:00 pm - 10:41 pmBIL-IAD
6h 41m1 stop
American Airlines Logo
6:04 am - 1:30 pmIAD-BIL
9h 26m1 stop
$526American Airlines
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Fri, Nov 21 - Tue, Nov 25

Delta flights from Billings to Washington, D.C. Dulles Intl Airport

Our best Delta deals on Billings to Washington, D.C. Dulles Intl Airport flight tickets
Delta
Mar 31
BIL6:15 amBillings Logan Intl
5h 40m
1 stop
IAD1:55 pmWashington, D.C. Dulles Intl
Apr 1
IAD12:30 pmWashington, D.C. Dulles Intl
12h 07m
2 stops
BIL10:37 pmBillings Logan Intl
$414
Find similar
Delta
Dec 5
BIL11:47 amBillings Logan Intl
10h 15m
2 stops
IAD12:02 amWashington, D.C. Dulles Intl
Dec 12
IAD5:03 pmWashington, D.C. Dulles Intl
8h 45m
2 stops
BIL11:48 pmBillings Logan Intl
$419
Find similar
Delta
Nov 20
BIL5:18 amBillings Logan Intl
11h 01m
2 stops
IAD6:19 pmWashington, D.C. Dulles Intl
Nov 24
IAD6:59 pmWashington, D.C. Dulles Intl
6h 25m
1 stop
BIL11:24 pmBillings Logan Intl
$506
Find similar

United Airlines flights from Billings to Washington, D.C. Dulles Intl Airport

Our best United Airlines deals on Billings to Washington, D.C. Dulles Intl Airport flight tickets
United Airlines
Dec 8
BIL10:54 amBillings Logan Intl
6h 14m
1 stop
IAD7:08 pmWashington, D.C. Dulles Intl
Dec 8
IAD10:23 pmWashington, D.C. Dulles Intl
24h 58m
2 stops
BIL9:21 pmBillings Logan Intl
$450
Find similar
United Airlines
Mar 18
BIL7:00 amBillings Logan Intl
7h 40m
1 stop
IAD4:40 pmWashington, D.C. Dulles Intl
Mar 21
IAD2:12 pmWashington, D.C. Dulles Intl
8h 42m
1 stop
BIL8:54 pmBillings Logan Intl
$479
Find similar
United Airlines
Nov 20
BIL2:31 pmBillings Logan Intl
6h 44m
1 stop
IAD11:15 pmWashington, D.C. Dulles Intl
Nov 24
IAD3:59 pmWashington, D.C. Dulles Intl
7h 19m
1 stop
BIL9:18 pmBillings Logan Intl
$501
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Billings to Washington, D.C. Dulles Intl Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated November 6, 2025.
Use the filters below to find and compare flights from Billings to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Fri 12/5

2:02 pm-4:36 pm

1 stop24h 34m

Washington, D.C. Dulles Intl

Fri 12/12

6:30 pm-12:08 am

1 stop31h 38m

$364

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Fri 12/5

3:36 pm-4:36 pm

2 stops23h 00m

Washington, D.C. Dulles Intl

Fri 12/12

6:30 pm-12:08 am

1 stop31h 38m

$394

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Thu 2/26

7:40 am-5:55 pm

1 stop8h 15m

Washington, D.C. Dulles Intl

Mon 3/2

7:00 am-1:15 pm

2 stops32h 15m

$402

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Thu 3/5

7:40 am-5:55 pm

1 stop8h 15m

Washington, D.C. Dulles Intl

Thu 3/12

7:00 am-10:43 pm

1 stop17h 43m

$408

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Tue 3/31

6:15 am-1:55 pm

1 stop5h 40m

Washington, D.C. Dulles Intl

Wed 4/1

12:30 pm-10:37 pm

2 stops12h 07m

$414

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Fri 12/5

11:47 am-12:02 am

2 stops10h 15m

Washington, D.C. Dulles Intl

Fri 12/12

5:03 pm-11:48 pm

2 stops8h 45m

$419

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Mon 12/8

10:54 am-7:08 pm

1 stop6h 14m

Washington, D.C. Dulles Intl

Mon 12/8

10:23 pm-9:21 pm

2 stops24h 58m

$450

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Wed 3/18

7:00 am-4:40 pm

1 stop7h 40m

Washington, D.C. Dulles Intl

Sat 3/21

2:12 pm-8:54 pm

1 stop8h 42m

$479

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Wed 3/18

2:03 pm-10:15 pm

1 stop6h 12m

Washington, D.C. Dulles Intl

Sat 3/21

2:01 pm-10:18 pm

2 stops10h 17m

$508

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Fri 11/21

2:00 pm-10:41 pm

1 stop6h 41m

Washington, D.C. Dulles Intl

Tue 11/25

6:04 am-1:30 pm

1 stop9h 26m

$526

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See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from Billings to Washington, D.C. Dulles Intl Airport

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

What is the cheapest day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Our data shows that Thursday is the least expensive day to fly to Washington, D.C. Dulles Intl Airport. Tickets to fly out on this day can be as low as $594. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Billings to Washington, D.C. Dulles Intl Airport for around $778.

What is the cheapest time of day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Flying to Washington, D.C. Dulles Intl Airport from Billings in the morning is the least expensive time of day to depart. momondo users have found prices as low as $628 when looking at flights departing in the morning. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $758 on average. Flights to Washington, D.C. Dulles Intl Airport from Billings at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

When to book flights from Billings to Washington, D.C. Dulles Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Billings to Washington, D.C. Dulles Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Billings to Washington, D.C. Dulles Intl Airport (BIL to IAD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Billings to Washington, D.C. Dulles Intl Airport

Direct flights

None
There are no direct flights from Billings to Washington, D.C. Dulles Intl Airport. There are no popular flight routes from Billings to Washington, D.C. Dulles Intl Airport.
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  • How far is Billings Logan Intl to Washington, D.C. Dulles Intl by plane?

    A flight from Billings Logan Intl to Washington, D.C. Dulles Intl will travel around 1641.1 mi. A reasonable flight in good conditions will take 5h 40m.

  • When did momondo last update prices for flights from Billings Logan Intl Airport to Washington, D.C. Dulles Intl Airport?

    Prices for flights from Billings Logan Intl Airport to Washington, D.C. Dulles Intl Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Billings Logan Intl Airport to Washington, D.C. Dulles Intl Airport?

  • How old do you have to be to fly from Billings Logan Intl Airport to Washington, D.C. Dulles Intl Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Billings Logan Intl Airport to Washington, D.C. Dulles Intl Airport.

  • What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?

    The necessary travel and health documents for your Washington, D.C. Dulles Intl Airport 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.

  • What is the most popular airline from Billings to Washington, D.C. Dulles Intl Airport?

Best airlines flying from Billings to Washington, D.C. Dulles Intl Airport

Compare and see reviews for airlines that fly from Billings to Washington, D.C. Dulles Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $373Free CancellationRating
7.4
9,007 reviews
Search United Airlines flights

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
National Harbor
Gettysburg
Arlington
Winchester
Woodbridge
Waldorf
Tysons
Laurel
Colonial Beach
Silver Spring
Fredericksburg
Harpers Ferry
Towson
Rockville
Reston
Manassas
Gaithersburg
Fairfax
Glen Burnie

Why use momondo?

Why should I use momondo to find a flight deal from Billings to Washington, D.C.?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Billings to Washington, D.C.. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Billings to Washington, D.C. with flexible booking policies on momondo?

Flights from Billings to Washington, D.C. with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Billings to Washington, D.C.?

momondo helps you find the best flight between Billings 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 Billings 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 Billings. 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.

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