BIL - DCA

$180 Find Cheap Flights from Billings to Reagan Washington National Airport - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Billings to Reagan-National departing on 8/25. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$361
Typical prices: $505-$620
United Airlines
Sat 9/12Tue 9/15
BIL - DCA • 1 stop
Cheapest one-way
$180
American Airlines
Tue 8/25
BIL - DCA • 1 stop
Top airlines
Cheapest • from $361 (round-trip)
Best reviews • 7.8 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Billings and Reagan-National. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $612 (round-trip)
Shortest trip • 5h 22m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 100% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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We hope you love your trip to Reagan-National!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Billings to Reagan-National (BIL-DCA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Billings to Reagan-National that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Billings to Reagan-National

Sat, Sep 12 - Tue, Sep 15
United Airlines Logo
11:43 am - 10:54 pm
BIL
-
DCA
9h 11m
1 stop
United Airlines Logo
4:20 pm - 9:00 pm
DCA
-
BIL
6h 40m
1 stop
$361United Airlines
Wed, Sep 2 - Mon, Sep 7
American Airlines Logo
12:22 pm - 11:59 pm
BIL
-
DCA
9h 37m
2 stops
American Airlines Logo
7:35 am - 11:50 am
DCA
-
BIL
6h 15m
1 stop
$364American Airlines
Thu, Sep 3 - Tue, Sep 8
Delta Logo
5:20 am - 4:44 pm
BIL
-
DCA
9h 24m
1 stop
Delta Logo
6:59 pm - 11:15 pm
DCA
-
BIL
6h 16m
1 stop
$370Delta
Thu, Sep 3 - Sun, Sep 6
Delta Logo
5:20 am - 4:44 pm
BIL
-
DCA
9h 24m
1 stop
Delta Logo
2:59 pm - 8:12 pm
DCA
-
BIL
7h 13m
1 stop
$379Delta
Thu, Sep 3 - Sun, Sep 6
American Airlines Logo
12:22 pm - 8:59 pm
BIL
-
DCA
6h 37m
1 stop
American Airlines Logo
7:35 am - 11:50 am
DCA
-
BIL
6h 15m
1 stop
$379American Airlines
Thu, Sep 3 - Tue, Sep 8
Delta Logo
5:20 am - 4:44 pm
BIL
-
DCA
9h 24m
1 stop
Delta Logo
6:59 pm - 11:15 pm
DCA
-
BIL
6h 16m
1 stop
$379Delta
Fri, Aug 28 - Mon, Aug 31
United Airlines Logo
5:07 am - 3:06 pm
BIL
-
DCA
7h 59m
1 stop
United Airlines Logo
4:20 pm - 9:00 pm
DCA
-
BIL
6h 40m
1 stop
$379United Airlines
Wed, Sep 2 - Mon, Sep 7
United Airlines Logo
7:00 am - 3:03 pm
BIL
-
DCA
6h 03m
1 stop
United Airlines Logo
4:20 pm - 9:00 pm
DCA
-
BIL
6h 40m
1 stop
$379United Airlines
Thu, Sep 3 - Sun, Sep 6
American Airlines Logo
12:22 pm - 11:59 pm
BIL
-
DCA
9h 37m
2 stops
American Airlines Logo
5:12 pm - 10:47 pm
DCA
-
BIL
7h 35m
1 stop
$384American Airlines
Sun, Nov 8 - Sun, Nov 15
United Airlines Logo
7:00 am - 2:55 pm
BIL
-
DCA
5h 55m
1 stop
United Airlines Logo
4:10 pm - 10:30 pm
DCA
-
BIL
8h 20m
1 stop
$396United Airlines
Booking Insights

KAYAK's insights & trends for Billings to Reagan-National flights

Get data-powered insights and trends into flights from Billings to Reagan-National to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Billings to Washington, D.C. Reagan-National Airport?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Billings to Washington, D.C. Reagan-National Airport departing in September.

Flight prices are below average for this route right now.

Flights to Washington, D.C. Reagan-National Airport from Billings usually cost between $384 and $503 in September.
The lowest price found in the past 5 days was $361 on United Airlines (Sep 12-Sep 15).

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Billings to Washington, D.C. Reagan-National Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Billings to Washington, D.C. Reagan-National Airport is January, where tickets cost $0 (return) on average. On the other hand, the most expensive months are May and February, where the average cost of round-trip tickets is $798 and $774 respectively.

Good to know

Low season

August

Cheapest flight

$180
Best time to beat the crowds with an average 31% drop in price.
Most popular time to fly and prices are also 4% lower on average.
Flight from Billings to Reagan Washington National Airport

When to book flights from Billings to Reagan-National

Are your dates flexible? Find out the best times to travel from Billings to Reagan-National based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Billings to Reagan Washington National Airport flights

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

    In the last 5 days, the lowest price for a flight from Billings to Washington, D.C. Reagan-National Airport was $180 for a one-way ticket and $361 for a round-trip.

  • Do I need a passport to fly between Billings and Reagan Washington National Airport?

    A passport is not required to fly from Billings to Reagan Washington National Airport.

  • Which aircraft models fly most regularly from Billings to Reagan Washington National Airport?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Billings to Reagan Washington National Airport?

    SkyTeam, and oneworld are the airline alliances operating flights between Billings and Reagan Washington National Airport, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Billings to Washington, D.C., Delta or American Airlines?

    The two airlines most popular with KAYAK users for flights from Billings to Washington, D.C. are Delta and American Airlines. With an average price for the route of $518 and an overall rating of 7.8, Delta is the most popular choice. American Airlines is also a great choice for the route, with an average price of $595 and an overall rating of 7.1.

  • How does KAYAK find such low prices on flights from Billings to Reagan Washington National Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Billings to Reagan Washington National Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Billings to Reagan Washington National Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Reagan Washington National Airport from Billings is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Billings to Reagan Washington National Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Reagan Washington National Airport with an airline and back to Billings with another airline. Booking your flights between Billings and DCA can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Billings to Reagan Washington National Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Reagan Washington National Airport from Billings up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Billings to Reagan-National

 
See real verified KAYAK customer reviews for airlines flying from Billings to Washington, D.C.. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Billings to Reagan-National? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.8
DeltaOverall score based on 8483 reviews
8.5Crew
7.2Food
7.8Comfort
7.8Entertainment
8.1Boarding
Airline reviews

The ac must have died, it was way to hot on this flight. Boarding g was chaotic. The flight was delayed for boarding. Not a great experience.

4.0 OkayMichael, Aug 2026
MSP - FAI
Read more Delta reviews

The ac must have died, it was way to hot on this flight. Boarding g was chaotic. The flight was delayed for boarding. Not a great experience.

Chaotic boarding at these gates, multiple gates squeezed in at the very end of a concourse, behind a restaurant. Agents gave up on boarding by individual zones. Flight itself was uneventful, which is all we hope for any more.

Flight delayed due to ground hold. Republic airways did a great job.

The flight was smooth, the crew was great but the plane was quite old

Flight was warm for first few hours and quite rough

Flight was delayed several times. At one point, they "pulled back" 15 minutes from the delayed boarding and sent a text saying we would board sooner than previously advised. The flight then was delayed again. And when we boarded, there was an unspecified technical issue which had us waiting in the plane for about an hour.

The Dekta Rep that checked us in was great. She's very personable, pleasant, and can tell she enjoys her job.

Nothing unusual. It was fine. I hate having to pay extra for my seat.

1st flight had mechanical issues after we boarded and almost took off. They tried to fix on runway but couldn’t do we went back to the gate. They couldn’t fix it there either. So we had to deplane and board another plane 2 hrs later. All in all our flight was delayed 4 hrs so we had to cancel some business meeting we had in London for the morning since we were supposed to arrive at 7am and did not arrive until 11:45am. Also, the 2nd plane had mechanical issues as well but fortunately they were able to fix on runway.

Didn’t make the flight. My connecting flight was an hour late and I missed the flight. You rerouted me thru Atlanta and I arrived in Rome over 10 hour after my original Rome arrival time. You also left my luggage in Atlanta and it took you three day to get my bag to meI spent 4 days in the same cloths, I had packed my prescriptions in the lost bag and went 3 days withoutMy heart meds.

On time departure & early arrival. Made a long day much better.

Like all planes recently, entertainment is achieved by giving the patron free WiFi and letting them stream shows via the screen on a phone or tablet.

Crew and agents misguiding on tight connections, and lack of connecting crew looking for inbound planes. A very avoidable missed connection as a result.

My flight was 4 hours delayed on departure at 6a causing me to miss my connection at DCA. I had to scramble to find a seat home on a later flight and instead of an exit seat, I was in row 30 on a flight getting me home 5 hours later than planned. The AA team on the ground did a fine job. AA continues to run the airline like the passengers are cargo.

American Airlines changed are gate no fewer than four times. Walking back and forth from one concourse to another was exhausting, especially after all the flight delays.

Hydraulic leak caused the flight to be cancelled. Auto system scheduled us on a 3 am flight. Wevhsedvrebook on the app and hit schedules later in the afternoon. Our luggage per gate and ticket agent would be rescanned and put in our new flight. Did not happen. Our luggage stayed in hsv. Baggage claim in wash dc unable to help. We filed a claim. Several emails about our luggage were in conflict with one another. Called as baggage and was on hold 30 minutes. Oscar said one of 2 was out fir delivery then cancelled. About 45 minutes later both pieces were delivered. Their system is suspect

The airplane was an old model, the overhead didn’t have enough room for people’s items and made boarding and boarding disappointing and stressful. Crew allowed passengers to bring more than the permitted baggage sizes.

It was great. Smooth flight, comfortable, left on time and landed on time.

Horrible experience upon landing. Probably more due to DCA utter incompetence than AA.

Easy boarding. Rows are smaller but that may be an older and bigger me now :)

Everything you need to know for your flight from Billings to Reagan-National

Information on your arrival and departure airports