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Cheap flights from Billings to Washington, D.C. from $304

This is the cheapest round-trip 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 1/20. 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

Enter your travel dates to find the best prices.
Alaska Airlines Logo
3:35 pm - 4:26 pm
BIL
-
IAD
22h 51m1 stop
Alaska Airlines Logo
6:04 pm - 2:55 pm
IAD
-
BIL
22h 51m1 stop
$304Alaska Airlines
Tue, Jan 20 - Tue, Jan 27
Alaska Airlines Logo
3:35 pm - 4:26 pm
BIL
-
IAD
22h 51m1 stop
Alaska Airlines Logo
6:04 pm - 11:36 pm
IAD
-
BIL
31h 32m1 stop
$314Alaska Airlines
Wed, Jan 14 - Sat, Jan 17
Alaska Airlines Logo
2:02 pm - 4:26 pm
BIL
-
IAD
24h 24m1 stop
Alaska Airlines Logo
6:04 pm - 11:36 pm
IAD
-
BIL
31h 32m1 stop
$329Alaska Airlines
Sat, Jan 31 - Tue, Feb 3
Alaska Airlines Logo
7:00 am - 5:20 pm
BIL
-
IAD
8h 20m1 stop
Alaska Airlines Logo
7:05 am - 11:38 pm
IAD
-
BIL
18h 33m1 stop
$354Alaska Airlines
Thu, Feb 26 - Tue, Mar 3
Alaska Airlines Logo
2:02 pm - 4:26 pm
BIL
-
IAD
24h 24m1 stop
Alaska Airlines Logo
6:04 pm - 2:55 pm
IAD
-
BIL
22h 51m1 stop
$360Alaska Airlines
Thu, Jan 29 - Sun, Feb 1
Alaska Airlines Logo
2:02 pm - 4:26 pm
BIL
-
IAD
24h 24m1 stop
Alaska Airlines Logo
6:04 pm - 11:36 pm
IAD
-
BIL
31h 32m1 stop
$364Alaska Airlines
Sat, Jan 31 - Tue, Feb 3
Alaska Airlines Logo
3:35 pm - 4:26 pm
BIL
-
IAD
22h 51m1 stop
Alaska Airlines Logo
5:26 pm - 11:36 pm
IAD
-
BIL
32h 10m2 stops
$383Alaska Airlines
Tue, Jan 20 - Tue, Jan 27
Alaska Airlines Logo
3:35 pm - 4:26 pm
BIL
-
IAD
22h 51m1 stop
Alaska Airlines Logo
6:04 pm - 1:22 pm
IAD
-
BIL
21h 18m2 stops
$384Alaska Airlines
Wed, Jan 14 - Sat, Jan 17
Alaska Airlines Logo
3:35 pm - 4:26 pm
BIL
-
IAD
22h 51m2 stops
Alaska Airlines Logo
6:04 pm - 11:36 pm
IAD
-
BIL
31h 32m1 stop
$395Alaska Airlines
Sat, Jan 31 - Tue, Feb 3
Alaska Airlines Logo
7:00 am - 5:20 pm
BIL
-
IAD
8h 20m1 stop
Alaska Airlines Logo
7:05 am - 1:24 pm
IAD
-
BIL
32h 19m2 stops
$402Alaska Airlines
Thu, Feb 26 - Tue, Mar 3

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

Our best Alaska Airlines deals on Billings to Washington, D.C. Dulles Intl Airport flight tickets
Alaska Airlines
Jan 20
BIL3:35 pmBillings Logan Intl
22h 51m
1 stop
IAD4:26 pmWashington, D.C. Dulles Intl
Jan 27
IAD6:04 pmWashington, D.C. Dulles Intl
22h 51m
1 stop
BIL2:55 pmBillings Logan Intl
$304
Find similar
Alaska Airlines
Jan 14
BIL3:35 pmBillings Logan Intl
22h 51m
1 stop
IAD4:26 pmWashington, D.C. Dulles Intl
Jan 17
IAD6:04 pmWashington, D.C. Dulles Intl
31h 32m
1 stop
BIL11:36 pmBillings Logan Intl
$314
Find similar
Alaska Airlines
Jan 31
BIL2:02 pmBillings Logan Intl
24h 24m
1 stop
IAD4:26 pmWashington, D.C. Dulles Intl
Feb 3
IAD6:04 pmWashington, D.C. Dulles Intl
31h 32m
1 stop
BIL11:36 pmBillings Logan Intl
$329
Find similar

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
Jan 21
BIL6:10 amBillings Logan Intl
5h 25m
1 stop
IAD1:35 pmWashington, D.C. Dulles Intl
Jan 28
IAD2:15 pmWashington, D.C. Dulles Intl
7h 09m
1 stop
BIL7:24 pmBillings Logan Intl
$409
Find similar
Delta
Jan 29
BIL5:15 amBillings Logan Intl
11h 06m
2 stops
IAD6:21 pmWashington, D.C. Dulles Intl
Feb 1
IAD2:15 pmWashington, D.C. Dulles Intl
7h 09m
1 stop
BIL7:24 pmBillings Logan Intl
$414
Find similar
Delta
Jan 29
BIL5:15 amBillings Logan Intl
11h 06m
2 stops
IAD6:21 pmWashington, D.C. Dulles Intl
Feb 1
IAD10:08 amWashington, D.C. Dulles Intl
11h 16m
2 stops
BIL7:24 pmBillings Logan Intl
$419
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 December 24, 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

Tue 1/20

3:35 pm-4:26 pm

1 stop22h 51m

Washington, D.C. Dulles Intl

Tue 1/27

6:04 pm-2:55 pm

1 stop22h 51m

$304

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Wed 1/14

3:35 pm-4:26 pm

1 stop22h 51m

Washington, D.C. Dulles Intl

Sat 1/17

6:04 pm-11:36 pm

1 stop31h 32m

$314

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Sat 1/31

2:02 pm-4:26 pm

1 stop24h 24m

Washington, D.C. Dulles Intl

Tue 2/3

6:04 pm-11:36 pm

1 stop31h 32m

$329

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Thu 2/26

7:00 am-5:20 pm

1 stop8h 20m

Washington, D.C. Dulles Intl

Tue 3/3

7:05 am-11:38 pm

1 stop18h 33m

$354

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Thu 1/29

2:02 pm-4:26 pm

1 stop24h 24m

Washington, D.C. Dulles Intl

Sun 2/1

6:04 pm-2:55 pm

1 stop22h 51m

$360

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Sat 1/31

2:02 pm-4:26 pm

1 stop24h 24m

Washington, D.C. Dulles Intl

Tue 2/3

6:04 pm-11:36 pm

1 stop31h 32m

$364

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Tue 1/20

3:35 pm-4:26 pm

1 stop22h 51m

Washington, D.C. Dulles Intl

Tue 1/27

5:26 pm-11:36 pm

2 stops32h 10m

$383

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Wed 1/14

3:35 pm-4:26 pm

1 stop22h 51m

Washington, D.C. Dulles Intl

Sat 1/17

6:04 pm-1:22 pm

2 stops21h 18m

$384

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Sat 1/31

3:35 pm-4:26 pm

2 stops22h 51m

Washington, D.C. Dulles Intl

Tue 2/3

6:04 pm-11:36 pm

1 stop31h 32m

$395

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Thu 2/26

7:00 am-5:20 pm

1 stop8h 20m

Washington, D.C. Dulles Intl

Tue 3/3

7:05 am-1:24 pm

2 stops32h 19m

$402

Flights are sorted by cheapest round-trip flights first.

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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

Fastest flight time

5h 14m

Direct flights

None
The fastest flight from Billings to Washington, D.C. Dulles Intl Airport takes 5h 14m
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.
Search flight deals

  • 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 14m.

  • 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 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.

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
Waldorf
Woodbridge
Tysons
Laurel
Colonial Beach
Silver Spring
Fredericksburg
Towson
Rockville
Harpers Ferry
Gaithersburg
Reston
Manassas
Sterling
Fairfax

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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