What is the cheapest airline that flies from Washington, D.C. to Helena?

Alaska Airlines and United Airlines are the most popular carriers operating from Washington, D.C. to Helena

How long does it take to fly to Helena?

On average, it takes 5h 40m to fly from Washington, D.C. to Helena if you fly out of Washington, D.C. (the most popular airport in Washington, D.C.) and into Bozeman (the most popular airport in Helena). If you’re flying out of Baltimore and into Bozeman, then the flight time is around 6h 53m.

What airlines fly to Helena?

United Airlines, Delta and American Airlines are the top three most popular airlines that fly to Helena from Washington, D.C. according to our data. United Airlines is the first choice among our users, with 44% of people opting to fly with this airline when traveling to Helena. Keep in mind that there are 5 different airlines that fly to Helena on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Washington, D.C. to Helena Airport?

Prices for flights from Washington, D.C. to Helena Airport refresh daily.

How many operators does momondo search for flights from Washington, D.C. to Helena Airport?

The number of operators available for flights from Washington, D.C. to Helena Airport is 1 as of November 2025.

How old do you have to be to fly from Washington, D.C. to Helena Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington, D.C. to Helena Airport.

What documentation or ID do you need to fly to Helena Airport?

The required travel and health documents for your Helena Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Helena Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$247 Cheap Flights from Washington, D.C. to Helena in 2025/26

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Find the cheapest flights from Washington, D.C. to Helena

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One-way

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8:00 am - 5:22 pmDCA-HLN

11h 22m1 stop

4:10 pm - 4:15 pmHLN-DCA

22h 05m1 stop

$382Alaska Airlines

Find Deal

Wed, Feb 11 - Wed, Feb 18

6:04 pm - 3:43 pmIAD-HLN

23h 39m1 stop

4:10 pm - 5:55 amHLN-IAD

11h 45m1 stop

$403Alaska Airlines

Find Deal

Wed, Feb 11 - Wed, Feb 18

6:55 pm - 3:43 pmIAD-HLN

22h 48m1 stop

4:10 pm - 5:55 pmHLN-IAD

23h 45m1 stop

$407Alaska Airlines

Find Deal

Fri, Feb 13 - Tue, Feb 17

8:00 am - 5:22 pmDCA-HLN

11h 22m1 stop

4:10 pm - 9:55 pmHLN-DCA

27h 45m1 stop

$422Alaska Airlines

Find Deal

Wed, Feb 11 - Mon, Feb 16

7:05 am - 12:27 pmIAD-HLN

7h 22m1 stop

1:07 pm - 12:24 amHLN-IAD

9h 17m2 stops

$502Delta

Find Deal

Wed, Feb 11 - Wed, Feb 18

5:00 pm - 10:34 pmDCA-HLN

7h 34m1 stop

12:50 pm - 9:13 amHLN-DCA

18h 23m2 stops

$523Delta

Find Deal

Sat, Apr 25 - Wed, Apr 29

8:15 am - 1:27 pmBWI-HLN

7h 12m1 stop

2:30 pm - 11:00 pmHLN-BWI

6h 30m1 stop

$550United Airlines

Find Deal

Sun, Nov 23 - Sat, Dec 6

8:15 am - 1:27 pmBWI-HLN

7h 12m1 stop

6:30 am - 9:08 pmHLN-BWI

12h 38m2 stops

$556United Airlines

Find Deal

Sun, Nov 23 - Sat, Dec 6

7:38 am - 5:36 pmBWI-HLN

11h 58m1 stop

6:13 pm - 4:51 pmHLN-BWI

44h 38m2 stops

$1,163Multiple Airlines

Find Deal

Fri, Nov 14 - Wed, Nov 19

7:38 am - 5:36 pmBWI-HLN

11h 58m1 stop

7:32 pm - 4:51 pmHLN-BWI

43h 19m2 stops

$1,213Multiple Airlines

Find Deal

Fri, Nov 14 - Sat, Nov 22

Alaska Airlines flights from Washington, D.C. to Helena

Our best Alaska Airlines deals on Washington, D.C. to Helena flight tickets

Alaska Airlines

Feb 11

DCA8:00 amWashington, D.C. Reagan-National

11h 22m

1 stop

HLN5:22 pmHelena

Feb 18

HLN4:10 pmHelena

22h 05m

1 stop

DCA4:15 pmWashington, D.C. Reagan-National

$382

Find similar

Alaska Airlines

Feb 11

IAD6:04 pmWashington, D.C. Dulles Intl

23h 39m

1 stop

HLN3:43 pmHelena

Feb 18

HLN4:10 pmHelena

11h 45m

1 stop

IAD5:55 amWashington, D.C. Dulles Intl

$403

Find similar

Alaska Airlines

Feb 13

IAD6:55 pmWashington, D.C. Dulles Intl

22h 48m

1 stop

HLN3:43 pmHelena

Feb 17

HLN4:10 pmHelena

23h 45m

1 stop

IAD5:55 pmWashington, D.C. Dulles Intl

$407

Find similar

Delta flights from Washington, D.C. to Helena

Our best Delta deals on Washington, D.C. to Helena flight tickets

Delta

Feb 11

IAD7:05 amWashington, D.C. Dulles Intl

7h 22m

1 stop

HLN12:27 pmHelena

Feb 18

HLN1:07 pmHelena

9h 17m

2 stops

IAD12:24 amWashington, D.C. Dulles Intl

$502

Find similar

Delta

Apr 25

DCA5:00 pmWashington, D.C. Reagan-National

7h 34m

1 stop

HLN10:34 pmHelena

Apr 29

HLN12:50 pmHelena

18h 23m

2 stops

DCA9:13 amWashington, D.C. Reagan-National

$523

Find similar

Delta

Apr 25

DCA12:05 pmWashington, D.C. Reagan-National

12h 29m

2 stops

HLN10:34 pmHelena

Apr 29

HLN12:50 pmHelena

18h 23m

2 stops

DCA9:13 amWashington, D.C. Reagan-National

$528

Find similar

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Helena

DCA - HLN

DCAHLN

Washington, D.C. Reagan-National

Wed 2/11

8:00 am-5:22 pm

1 stop11h 22m

Helena

Wed 2/18

4:10 pm-4:15 pm

1 stop22h 05m

$382

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

Wed 2/11

6:04 pm-3:43 pm

1 stop23h 39m

Helena

Wed 2/18

4:10 pm-5:55 am

1 stop11h 45m

$403

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

Fri 2/13

6:55 pm-3:43 pm

1 stop22h 48m

Helena

Tue 2/17

4:10 pm-5:55 pm

1 stop23h 45m

$407

Washington, D.C.Helena

DCA - HLN

DCAHLN

Washington, D.C. Reagan-National

Wed 2/11

8:00 am-5:22 pm

1 stop11h 22m

Helena

Mon 2/16

4:10 pm-9:55 pm

1 stop27h 45m

$422

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

Wed 2/11

7:05 am-12:27 pm

1 stop7h 22m

Helena

Wed 2/18

1:07 pm-12:24 am

2 stops9h 17m

$502

Washington, D.C.Helena

DCA - HLN

DCAHLN

Washington, D.C. Reagan-National

Sat 4/25

5:00 pm-10:34 pm

1 stop7h 34m

Helena

Wed 4/29

12:50 pm-9:13 am

2 stops18h 23m

$523

BaltimoreHelena

BWI - HLN

BWIHLN

Baltimore/Washington

Sun 11/23

8:15 am-1:27 pm

1 stop7h 12m

Helena

Sat 12/6

2:30 pm-11:00 pm

1 stop6h 30m

$550

BaltimoreHelena

BWI - HLN

BWIHLN

Baltimore/Washington

Sun 11/23

8:15 am-1:27 pm

1 stop7h 12m

Helena

Sat 12/6

6:30 am-9:08 pm

2 stops12h 38m

$556

BaltimoreHelena

BWI - HLN

BWIHLN

Baltimore/Washington

Fri 11/14

7:38 am-5:36 pm

1 stop11h 58m

Helena

Wed 11/19

6:13 pm-4:51 pm

2 stops44h 38m

$1,163

BaltimoreHelena

BWI - HLN

BWIHLN

Baltimore/Washington

Fri 11/14

7:38 am-5:36 pm

1 stop11h 58m

Helena

Sat 11/22

7:32 pm-4:51 pm

2 stops43h 19m

$1,213

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How to get the cheapest flight ticket from Washington, D.C. to Helena

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

Prices

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Other information

What is the cheapest day to depart on your flight to Helena?

The cheapest day to depart from Washington, D.C. to Helena is on a Tuesday. Travelers who choose to depart for Helena on a Tuesday will often find tickets for as low as $545. The most expensive day to fly to Helena is Friday, with ticket prices averaging around $1,026.

What is the cheapest time of day to depart on your flight to Helena?

According to our data, the cheapest time of day to fly to Helena is in the morning. momondo users have found flights departing from Washington, D.C. to Helena in the morning for as low as $662. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Helena is in the afternoon when prices are around $723.

When to book flights from Washington, D.C. to Helena

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. to Helena according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Washington, D.C. to Helena (WAS to HLN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to Helena

Direct flights	None

There are no direct flights from Washington, D.C. to Helena. There are no popular flight routes from Washington, D.C. to Helena.

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How far is Washington, D.C. to Helena by plane?
A flight from Washington, D.C. to Helena will travel around 1835.3 mi. In terms of flight time, this usually takes a little over 7h 05m.
When did momondo last update prices for flights from Washington, D.C. to Helena Airport?
Prices for flights from Washington, D.C. to Helena Airport refresh daily.
How many operators does momondo search for flights from Washington, D.C. to Helena Airport?
The number of operators available for flights from Washington, D.C. to Helena Airport is 1 as of November 2025.
How old do you have to be to fly from Washington, D.C. to Helena Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington, D.C. to Helena Airport.
What documentation or ID do you need to fly to Helena Airport?
The required travel and health documents for your Helena Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Helena Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Washington, D.C. to Helena?
Based on momondo bookings for flights between Washington, D.C. and Helena, the leading airline is United Airlines, making up 100% of the total bookings.

Best airlines flying from Washington, D.C. to Helena

Compare and see reviews for airlines that fly from Washington, D.C. to Helena with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $408	Free Cancellation	Rating 7.4 8,997 reviews		Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Helena?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Helena from Washington, D.C..

Can I find flights from Washington, D.C. to Helena with flexible booking policies on momondo?

All flight searches from Washington, D.C. to Helena on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Washington, D.C. to Helena?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Washington, D.C. to Helena.

I’m not ready to book a flight from Washington, D.C. to Helena right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Washington, D.C. to Helena flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Cheap flights from Washington, D.C. to Helena from $247

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to Helena departing on 2/13. 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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Alaska Airlines flights from Washington, D.C. to Helena

Our best Alaska Airlines deals on Washington, D.C. to Helena flight tickets

Delta flights from Washington, D.C. to Helena

Our best Delta deals on Washington, D.C. to Helena flight tickets

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How to get the cheapest flight ticket from Washington, D.C. to Helena

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 Helena?

The cheapest day to depart from Washington, D.C. to Helena is on a Tuesday. Travelers who choose to depart for Helena on a Tuesday will often find tickets for as low as $545. The most expensive day to fly to Helena is Friday, with ticket prices averaging around $1,026.

What is the cheapest time of day to depart on your flight to Helena?

What is the cheapest airline that flies from Washington, D.C. to Helena?

Alaska Airlines and United Airlines are the most popular carriers operating from Washington, D.C. to Helena

What airlines fly to Helena?

How long does it take to fly to Helena?

On average, it takes 5h 40m to fly from Washington, D.C. to Helena if you fly out of Washington, D.C. (the most popular airport in Washington, D.C.) and into Bozeman (the most popular airport in Helena). If you’re flying out of Baltimore and into Bozeman, then the flight time is around 6h 53m.

When to book flights from Washington, D.C. to Helena

Cheap Washington, D.C. to Helena (WAS to HLN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to Helena

Direct flights

How far is Washington, D.C. to Helena by plane?

When did momondo last update prices for flights from Washington, D.C. to Helena Airport?

How many operators does momondo search for flights from Washington, D.C. to Helena Airport?

How old do you have to be to fly from Washington, D.C. to Helena Airport?

What documentation or ID do you need to fly to Helena Airport?

What is the most popular airline from Washington, D.C. to Helena?

Best airlines flying from Washington, D.C. to Helena

Compare and see reviews for airlines that fly from Washington, D.C. to Helena with momondo

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Helena?

Can I find flights from Washington, D.C. to Helena with flexible booking policies on momondo?

How can momondo help me find flights from Washington, D.C. to Helena?

I’m not ready to book a flight from Washington, D.C. to Helena right now. Can momondo alert me if prices change?

An easier way to manage your Helena trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

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