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Cheap flights from Billings to Washington, D.C. from $205

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 8/21. 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.
Delta Logo
6:34 pm - 9:19 am
BIL
-
IAD
12h 45m
2 stops
Delta Logo
3:03 pm - 11:13 pm
IAD
-
BIL
10h 10m
2 stops
$385Delta
Thu, Aug 6 - Wed, Aug 12
Alaska Airlines Logo
6:01 am - 4:33 pm
BIL
-
IAD
8h 32m
1 stop
Alaska Airlines Logo
9:35 am - 6:52 pm
IAD
-
BIL
11h 17m
1 stop
$399Alaska Airlines
Tue, Oct 20 - Sat, Oct 24
Alaska Airlines Logo
12:05 pm - 11:59 pm
BIL
-
IAD
9h 54m
1 stop
Alaska Airlines Logo
9:35 am - 6:52 pm
IAD
-
BIL
11h 17m
1 stop
$401Alaska Airlines
Sat, Oct 3 - Sat, Oct 10
Alaska Airlines Logo
6:05 am - 4:46 pm
BIL
-
IAD
8h 41m
1 stop
Alaska Airlines Logo
7:00 am - 6:49 pm
IAD
-
BIL
13h 49m
1 stop
$405Alaska Airlines
Sat, Sep 12 - Thu, Sep 17
Delta Logo
5:30 am - 6:15 pm
BIL
-
IAD
10h 45m
2 stops
Delta Logo
6:58 pm - 11:14 pm
IAD
-
BIL
6h 16m
1 stop
$424Delta
Thu, May 28 - Wed, Jun 3
Delta Logo
6:34 pm - 9:19 am
BIL
-
IAD
12h 45m
2 stops
Delta Logo
3:03 pm - 11:13 pm
IAD
-
BIL
10h 10m
2 stops
$425Delta
Thu, Aug 6 - Wed, Aug 12
Delta Logo
6:34 pm - 10:18 am
BIL
-
IAD
13h 44m
2 stops
Delta Logo
3:02 pm - 10:50 pm
IAD
-
BIL
9h 48m
2 stops
$439Delta
Sun, Jul 19 - Mon, Jul 20
United Airlines Logo
4:10 pm - 12:45 am
BIL
-
IAD
6h 35m
1 stop
United Airlines Logo
6:30 am - 1:22 pm
IAD
-
BIL
8h 52m
1 stop
$440United Airlines
Thu, Jul 9 - Sun, Jul 12
Alaska Airlines Logo
7:21 pm - 7:34 am
BIL
-
IAD
10h 13m
1 stop
Alaska Airlines Logo
6:00 am - 1:21 pm
IAD
-
BIL
9h 21m
1 stop
$444Alaska Airlines
Sat, May 30 - Wed, Jun 3
Alaska Airlines Logo
7:29 pm - 5:40 am
BIL
-
IAD
8h 11m
1 stop
Alaska Airlines Logo
5:54 pm - 6:49 pm
IAD
-
BIL
26h 55m
1 stop
$450Alaska Airlines
Thu, Sep 24 - Mon, Sep 28

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

Our best American Airlines deals on Billings to Washington, D.C. Dulles Intl Airport flight tickets
American Airlines
Sep 12
BIL7:00 amBillings Logan Intl
8h 54m
1 stop
IAD5:54 pmWashington, D.C. Dulles Intl
Sep 17
IAD6:24 amWashington, D.C. Dulles Intl
8h 16m
1 stop
BIL12:40 pmBillings Logan Intl
$506
American Airlines
Jun 2
BIL12:42 pmBillings Logan Intl
9h 31m
2 stops
IAD12:13 amWashington, D.C. Dulles Intl
Jun 5
IAD6:19 amWashington, D.C. Dulles Intl
8h 44m
1 stop
BIL1:03 pmBillings Logan Intl
$515
American Airlines
Jun 2
BIL12:42 pmBillings Logan Intl
9h 31m
2 stops
IAD12:13 amWashington, D.C. Dulles Intl
Jun 5
IAD6:19 amWashington, D.C. Dulles Intl
8h 44m
1 stop
BIL1:03 pmBillings Logan Intl
$525

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
Oct 20
BIL6:01 amBillings Logan Intl
8h 32m
1 stop
IAD4:33 pmWashington, D.C. Dulles Intl
Oct 24
IAD9:35 amWashington, D.C. Dulles Intl
11h 17m
1 stop
BIL6:52 pmBillings Logan Intl
$399
Alaska Airlines
Oct 3
BIL12:05 pmBillings Logan Intl
9h 54m
1 stop
IAD11:59 pmWashington, D.C. Dulles Intl
Oct 10
IAD9:35 amWashington, D.C. Dulles Intl
11h 17m
1 stop
BIL6:52 pmBillings Logan Intl
$401
Alaska Airlines
Sep 12
BIL6:05 amBillings Logan Intl
8h 41m
1 stop
IAD4:46 pmWashington, D.C. Dulles Intl
Sep 17
IAD7:00 amWashington, D.C. Dulles Intl
13h 49m
1 stop
BIL6:49 pmBillings Logan Intl
$405

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 May 16, 2026.
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

Cheapest round-trip

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Thu 8/6

6:34 pm-9:19 am

2 stops12h 45m

Washington, D.C. Dulles Intl

Wed 8/12

3:03 pm-11:13 pm

2 stops10h 10m

$385

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Tue 10/20

6:01 am-4:33 pm

1 stop8h 32m

Washington, D.C. Dulles Intl

Sat 10/24

9:35 am-6:52 pm

1 stop11h 17m

$399

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Sat 10/3

12:05 pm-11:59 pm

1 stop9h 54m

Washington, D.C. Dulles Intl

Sat 10/10

9:35 am-6:52 pm

1 stop11h 17m

$401

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Sat 9/12

6:05 am-4:46 pm

1 stop8h 41m

Washington, D.C. Dulles Intl

Thu 9/17

7:00 am-6:49 pm

1 stop13h 49m

$405

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Thu 5/28

5:30 am-6:15 pm

2 stops10h 45m

Washington, D.C. Dulles Intl

Wed 6/3

6:58 pm-11:14 pm

1 stop6h 16m

$424

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Thu 8/6

6:34 pm-9:19 am

2 stops12h 45m

Washington, D.C. Dulles Intl

Wed 8/12

3:03 pm-11:13 pm

2 stops10h 10m

$425

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Sun 7/19

6:34 pm-10:18 am

2 stops13h 44m

Washington, D.C. Dulles Intl

Mon 7/20

3:02 pm-10:50 pm

2 stops9h 48m

$439
Quickest round-trip

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Thu 7/9

4:10 pm-12:45 am

1 stop6h 35m

Washington, D.C. Dulles Intl

Sun 7/12

6:30 am-1:22 pm

1 stop8h 52m

$440

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Sat 5/30

7:21 pm-7:34 am

1 stop10h 13m

Washington, D.C. Dulles Intl

Wed 6/3

6:00 am-1:21 pm

1 stop9h 21m

$444

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Thu 9/24

7:29 pm-5:40 am

1 stop8h 11m

Washington, D.C. Dulles Intl

Mon 9/28

5:54 pm-6:49 pm

1 stop26h 55m

$450

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 airline that flies from Billings Logan Intl to Washington, D.C. Dulles Intl?

Delta and United Airlines are the most popular carriers operating from Billings Logan Intl to Washington, D.C. Dulles Intl

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 10m

Direct flights

None
The fastest flight from Billings to Washington, D.C. Dulles Intl Airport takes 5h 10m
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

Frequently asked questions about flying from Billings to Washington, D.C. Dulles Intl Airport

  • 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 10m.

  • 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 $350Free CancellationRating
7.4
9,726 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
Waldorf
Woodbridge
Laurel
Gaithersburg
Colonial Beach
Fredericksburg
Silver Spring
Towson
Rockville
Manassas
Sterling
Linthicum Heights
Tysons
Bethesda
Springfield

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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