HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Reagan-National

$354+ Cheap flights from Billings (BIL) to Reagan-National (DCA)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/28. Fares are subject to change and may not be available on all flights or dates of travel.
BIL — DCA
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Billings to Reagan-National with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Billings to Reagan-National

Cheapest flights from Billings to Reagan-National
Explore the most affordable flight options available from Billings to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

This United Airlines deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:35 amBIL - DCA
1 stop6h 24mUnited Airlines
Sat 1/34:17 pmDCA - BIL
1 stop7h 07mUnited Airlines
Deal found 12/17$516
This American Airlines deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/315:40 amBIL - DCA
2 stops11h 17mAmerican Airlines
Sun 1/46:30 amDCA - BIL
1 stop8h 54mAmerican Airlines
Deal found 12/15$624
This Delta deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:25 amBIL - DCA
1 stop5h 32mDelta
Sun 1/47:15 pmDCA - BIL
1 stop6h 04mDelta
Deal found 12/15$670
This United Airlines deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/286:35 amBIL - DCA
1 stop6h 24mUnited Airlines
Wed 12/314:17 pmDCA - BIL
1 stop7h 07mUnited Airlines
Deal found 12/17$836
This Delta deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/285:14 amBIL - DCA
1 stop8h 47mDelta
Wed 12/312:01 pmDCA - BIL
2 stops11h 18mDelta
Deal found 12/17$870

Find flight deals from Billings to Reagan-National

Discover tips and strategies to find the most affordable flight options for your journey from Billings (BIL) to Reagan-National (DCA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$354
(Alaska Airlines)

Popular in

July

Cheapest in

November

Average price

$486
Provider with most accurate pricing for Billings Logan Intl-Washington, D.C. Reagan-National flight deals.
Search Deals
Provider most trusted by Cheapflights users for Billings Logan Intl-Washington, D.C. Reagan-National flights.
Search Deals
From Billings Logan Intl to Washington, D.C. Reagan-National
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($49 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Billings to Reagan-National 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, Cheapflights users made 2,558,603 searches. Data last updated December 18, 2025.
Use the filters below to find and compare flights from Billings to Washington, D.C. Reagan-National Airport that are best for you.

Fly from

Billings

Fly to

Reagan-National

Route

Depart

Return

Price

BillingsWashington, D.C.

BIL - DCA

BILDCA

Billings Logan Intl

Wed 1/28

3:35 pm-9:59 pm

1 stop28h 24m

Washington, D.C. Reagan-National

Sun 2/1

8:00 am-11:36 pm

1 stop17h 36m

$354

BillingsWashington, D.C.

BIL - DCA

BILDCA

Billings Logan Intl

Wed 1/14

6:30 am-2:59 pm

1 stop6h 29m

Washington, D.C. Reagan-National

Sat 1/17

4:11 pm-9:23 pm

1 stop7h 12m

$363

BillingsWashington, D.C.

BIL - DCA

BILDCA

Billings Logan Intl

Thu 1/29

2:02 pm-9:59 pm

1 stop29h 57m

Washington, D.C. Reagan-National

Sun 2/1

8:00 am-11:36 pm

1 stop17h 36m

$364

BillingsWashington, D.C.

BIL - DCA

BILDCA

Billings Logan Intl

Wed 1/14

6:22 am-6:42 pm

2 stops10h 20m

Washington, D.C. Reagan-National

Sat 1/17

5:10 pm-10:31 pm

1 stop7h 21m

$368

BillingsWashington, D.C.

BIL - DCA

BILDCA

Billings Logan Intl

Sat 2/14

2:04 pm-4:06 pm

1 stop24h 02m

Washington, D.C. Reagan-National

Wed 2/18

8:00 am-11:38 pm

1 stop17h 38m

$370

BillingsWashington, D.C.

BIL - DCA

BILDCA

Billings Logan Intl

Wed 1/14

5:15 am-4:00 pm

1 stop8h 45m

Washington, D.C. Reagan-National

Wed 1/21

11:00 am-7:24 pm

2 stops10h 24m

$394

BillingsWashington, D.C.

BIL - DCA

BILDCA

Billings Logan Intl

Thu 1/29

6:54 am-9:30 pm

2 stops12h 36m

Washington, D.C. Reagan-National

Sun 2/1

3:24 pm-11:42 pm

2 stops10h 18m

$419

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Compare providers for flights from Billings to Reagan-National

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Billings to Reagan-National in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Billings-Washington, D.C. Reagan-National Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Billings-Washington, D.C. Reagan-National Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Billings-Washington, D.C. Reagan-National Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Billings-Washington, D.C. Reagan-National Airport flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Billings-Washington, D.C. Reagan-National Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Billings to Reagan-National

Have a flexible travel schedule? Discover the best time to fly to Reagan-National from Billings with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Billings to Washington, D.C. Reagan-National Airport

What is the cheapest month to book a flight from Billings to Washington, D.C. Reagan-National Airport?

Currently, June is the cheapest month in which you can book a flight from Billings to Washington, D.C. Reagan-National Airport (average of $374). Flying from Billings to Washington, D.C. Reagan-National Airport in August is currently the most expensive (average of $688). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost to fly round-trip from Billings to Washington, D.C. Reagan-National Airport?

Reviews of airlines servicing Reagan-National

Get insights into the airlines that provide service to Reagan-National. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Reagan-National. Reviews last updated December 18, 2025.
Read reviews from past customers who have flown Delta, United Airlines, and American Airlines from Billings to Washington, D.C. Reagan-National Airport. 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.
Delta
7.9
Good
8,005 reviews

Comfort

7.9

Boarding

8.1

Food

7.3

Overall

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,005 reviews
Delta
7.9
Good
8,005 reviews

Comfort

7.9

Boarding

8.1

Food

7.3

Overall

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,091 reviews
Delta
7.9
Good
8,005 reviews

Comfort

7.9

Boarding

8.1

Food

7.3

Overall

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,054 reviews
Delta
7.9
Good
8,005 reviews

Comfort

7.9

Boarding

8.1

Food

7.3

Overall

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Billings to Reagan-National. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Billings to Washington, D.C. Reagan-National?

    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. Reagan-National from Billings. Booking flights from Billings Logan Intl (BIL) to Washington, D.C. Reagan-National should be relatively easy as there are 0 daily outbound flights to Washington, D.C. Reagan-National from 3 different airlines.

  • How long is the flight from Billings to Washington, D.C. Reagan-National Airport?

    A quick flight from Billings to Washington, D.C. Reagan-National Airport can take about 6h 29m. Alaska Airlines provides one of the quickest options available for as low as $363. The distance between Billings and Washington, D.C. Reagan-National Airport is about 1666 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Billings to Washington, D.C. Reagan-National Airport round-trip?

    Cheapflights users have booked flights from Billings to Washington, D.C. Reagan-National Airport round-trip from $374. Other airlines that can offer you cheap pricing are American Airlines, from $394, and Delta, from $398. You may be able to fly from Billings to Washington, D.C. Reagan-National Airport for 33% less than the average price by searching for these airlines.

  • Can I find deals for flights from Billings to Reagan-National that include hotel bookings?

    Yes. In addition to deals on Billings to Reagan-National flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Billings to Reagan-National?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Billings to Reagan-National.

  • Can I find deals for business class flights from Billings to Reagan-National?

    Yes. Cheapflights offers flight deals from Billings to Reagan-National by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Billings to Washington, D.C. Reagan-National Airport?

    Currently, June is the cheapest month in which you can book a flight from Billings to Washington, D.C. Reagan-National Airport (average of $374). Flying from Billings to Washington, D.C. Reagan-National Airport in August is currently the most expensive (average of $688). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Washington, D.C. Reagan-National Airport?

Book flights to Washington, D.C. Reagan-National Airport if you plan to visit one of these locations
Alexandria
Woodbridge
Tysons
Arlington
Owings Mills
Springfield
Hanover
Silver Spring
Fredericksburg
Linthicum Heights
Rockville
Laurel
Towson
Manassas
National Harbor
Bowie
Largo
McLean
Clinton
Cordova

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 3 airlines flying from Billings to Reagan-National

Discover the top 3 airlines that operate flights from Billings to Reagan-National. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$374Average$484FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$394Average$595FlexibilityNo cancel feeOn-time71%
DeltaCheapest$398Average$598FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.