Cheap flights from Billings (BIL) to Dulles Intl (IAD) from $245

This is the cheapest one-way flight price, found on 9/20. Prices may vary by date and flight preferences.
BIL — IAD
Sep 26 — Oct 31

How to find the cheapest flight from Billings (BIL) to Dulles Intl (IAD)

All the information you need to plan the best BIL to IAD flight in 2023: compare Billings to Dulles Intl flight prices with the expected peak season, weather and rainfall in Dulles Intl.

Popular in

June

Cheapest in

January

Average price

$666

Round-trip from

$237
High demand for flights, 53% potential price rise
Best time to find cheap flights, 45% potential price drop
Average for round-trip flights in September 2023
From Billings Logan Intl to Washington, D.C. Dulles Intl

BIL - WAS

Price

$237 - $375

WAS

Temperature

35.6 - 80.6 °F

WAS

Rainfall

2.6 - 4 inches

How far in advance should I book a flight from Billings to Washington, D.C. Dulles Intl Airport?

To save up to 66% on this flight, we recommend booking at least 33 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Billings to Washington, D.C. Dulles Intl Airport from $679 1-2 weeks out and tickets from $858 for flights departing within the next 72 hours.

What is the cheapest month to fly from Billings to Washington, D.C. Dulles Intl Airport?

The best pricing can be found in the month of February. Prices to Washington, D.C. Dulles Intl Airport from Billings average $615. You can even find prices in February for less than $615, as users have found deals to Washington, D.C. Dulles Intl Airport from as low as $378. The month of June appears to be one of the more expensive times to travel to Washington, D.C. Dulles Intl Airport from Billings. Flying in the targeted month can save you up to 86%.

When is the cheapest time to fly from Billings to Washington, D.C. Dulles Intl Airport (BIL - IAD)?

When flying from Billings to Washington, D.C. Dulles Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Cheap Delta flights from Billings to Dulles Intl

Consider these cheap Delta flights we've found departing from Billings to Washington, D.C.. It's recommended that users confirm their flight details before booking.

Cheap United Airlines flights from Billings to Dulles Intl

Some of the lowest-priced United Airlines flights we've found at this time heading from Billings to Washington, D.C.. Deals frequently update to provide users with more options.

Cheap Billings to Dulles Intl flights in September & October 2023

The best prices found for BIL to IAD flights for September, October
These are some of the most attractive deals on flights from Billings to Washington, D.C. in 2023. If these deals don't appeal to you, be sure to come back soon for more options.

Billings to Dulles Intl 2023 flight deals

Cheap flights to Dulles Intl from Billings found for this year
These are some of the most attractive deals on flights from Billings to Washington, D.C. in 2023. If these deals don't appeal to you, be sure to come back soon for more options.

One-way flights to Dulles Intl from Billings

The cheapest one-way flights from Billings to Dulles Intl
Take a look at some of the best available options we've come across on one-way flights from Billings to Washington, D.C.. Those needing a return flight from Billings to Washington, D.C. can use the search form above.

Find flights from Billings to Dulles Intl within your budget

Use the slider to find flights from Billings to Dulles Intl that fit your budget.

Fly from

Any airport

Fly to

Any airport

Budget

$562 - $797

Route

Depart

Return

Price

Billings Logan IntlWashington, D.C. Dulles Intl

BIL - IAD

BILIAD

Billings Logan Intl

Fri 11/17

1 stop8h 00m

Washington, D.C. Dulles Intl

Mon 11/20

2 stops9h 03m

Billings Logan IntlWashington, D.C. Dulles Intl

BIL - IAD

BILIAD

Billings Logan Intl

Thu 10/19

1 stop7h 16m

Washington, D.C. Dulles Intl

Mon 10/23

2 stops13h 43m

Billings Logan IntlWashington, D.C. Dulles Intl

BIL - IAD

BILIAD

Billings Logan Intl

Thu 10/19

1 stop7h 16m

Washington, D.C. Dulles Intl

Mon 10/23

1 stop17h 14m

Billings Logan IntlWashington, D.C. Dulles Intl

BIL - IAD

BILIAD

Billings Logan Intl

Fri 10/13

1 stop27h 17m

Washington, D.C. Dulles Intl

Sun 10/15

1 stop24h 38m

Billings Logan IntlWashington, D.C. Dulles Intl

BIL - IAD

BILIAD

Billings Logan Intl

Fri 11/17

1 stop8h 00m

Washington, D.C. Dulles Intl

Mon 11/20

2 stops9h 03m

Billings Logan IntlWashington, D.C. Dulles Intl

BIL - IAD

BILIAD

Billings Logan Intl

Fri 11/17

1 stop6h 35m

Washington, D.C. Dulles Intl

Mon 11/20

1 stop14h 33m

Billings Logan IntlWashington, D.C. Dulles Intl

BIL - IAD

BILIAD

Billings Logan Intl

Fri 10/13

1 stop13h 56m

Washington, D.C. Dulles Intl

Sun 10/15

2 stops37h 36m

Billings Logan IntlWashington, D.C. Dulles Intl

BIL - IAD

BILIAD

Billings Logan Intl

Fri 10/13

2 stops38h 34m

Washington, D.C. Dulles Intl

Sun 10/15

2 stops37h 36m

Billings Logan IntlWashington, D.C. Dulles Intl

BIL - IAD

BILIAD

Billings Logan Intl

Wed 11/22

1 stop7h 18m

Washington, D.C. Dulles Intl

Sun 11/26

1 stop20h 20m

Flights are sorted by cheapest first

Deals found on 9/20

Reviews of airlines servicing Dulles Intl

Read through reviews of airlines operating flights from Billings to Washington, D.C., such as Delta, United Airlines and American Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.1
Very good
1,393 reviews

Entertainment

7.2

Overall

8.1

Comfort

8.0

Crew

8.6

Food

7.2

Boarding

8.3

Reviews

1 / 10

Good flight, delayed only by an hour and a half.

Alaska Airlines
8.1
Very good
1,393 reviews
Alaska Airlines
8.1
Very good
1,393 reviews

Entertainment

7.2

Overall

8.1

Comfort

8.0

Crew

8.6

Food

7.2

Boarding

8.3

Reviews

1 / 10

Good flight, delayed only by an hour and a half.

Delta
7.9
Good
3,019 reviews
Alaska Airlines
8.1
Very good
1,393 reviews

Entertainment

7.2

Overall

8.1

Comfort

8.0

Crew

8.6

Food

7.2

Boarding

8.3

Reviews

1 / 10

Good flight, delayed only by an hour and a half.

United Airlines
7.4
Good
1,890 reviews
Alaska Airlines
8.1
Very good
1,393 reviews

Entertainment

7.2

Overall

8.1

Comfort

8.0

Crew

8.6

Food

7.2

Boarding

8.3

Reviews

1 / 10

Good flight, delayed only by an hour and a half.

American Airlines
7.2
Good
2,635 reviews
Alaska Airlines
8.1
Very good
1,393 reviews

Entertainment

7.2

Overall

8.1

Comfort

8.0

Crew

8.6

Food

7.2

Boarding

8.3

Reviews

1 / 10

Good flight, delayed only by an hour and a half.

Related info for your journey

Useful info, stats and facts about Billings to Dulles Intl flights.

What airport do you fly from for flights from Billings to Washington, D.C. Dulles Intl?

Located just 2.7 mi from the city center, Billings Logan Intl is the airport most travelers will use when flying to Washington, D.C. Dulles Intl from Billings. Booking flights from Billings Logan Intl (BIL) to Washington, D.C. Dulles Intl should be relatively easy as there are 0 daily outbound flights to Washington, D.C. Dulles Intl from 3 different airlines.

Can I find flights from Billings to Washington, D.C. Dulles Intl Airport for under $600 on Cheapflights?

Yes, there are multiple flights from Billings to Washington, D.C. Dulles Intl Airport for under $600. The cheapest flight booked recently is on Delta for just $562, but on average you can expect to pay $754.

What are the cheapest airlines flying from Billings to Washington, D.C. Dulles Intl Airport round-trip?

Our cheapest airline available from Billings to Washington, D.C. Dulles Intl Airport is Delta. Our recent data shows that you can find tickets from as low as $562 on this airline. Additional options worth looking into are United Airlines and American Airlines, starting at $655 and $741 round-trip. Delta is currently priced 20% below the average price you’ll pay for this route.

What are the cheapest airlines to fly from Billings to Washington, D.C. Dulles Intl Airport one-way?

The cheapest airlines for a one-way flight from Billings to Washington, D.C. Dulles Intl Airport are American Airlines ($245), Delta ($249), and Alaska Airlines ($332).

What are the most popular airlines that fly from Billings to Washington, D.C. Dulles Intl Airport?

What does BIL to IAD mean?

Billings Logan Intl Airport is BIL and Washington, D.C. Dulles Intl Airport is IAD. These codes are created by the International Air Transport Association (IATA) and airlines use them to identify the departing and arrival airports in the flight routes they service.

Top 3 airlines flying from Billings to Dulles Intl

The chart below displays the airlines Cheapflights users traveling from Billings to Dulles Intl choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$389Average$545FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
United AirlinesCheapest$394Average$580FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapest$492Average$606FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
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