How long does it take to fly to Helena?

On average, it takes 5h 21m 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 5h 59m.

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 June 2026.

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.

$180 Cheap Flights from Washington, D.C. to Helena in 2026

Discover deals from 900+ travel sites with momondo.

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

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:00 am - 12:17 pm

IAD

HLN

7h 17m

1 stop

12:57 pm - 11:22 pm

HLN

IAD

8h 25m

1 stop

$349Delta

Wed, Sep 9 - Wed, Sep 23

7:35 am - 12:17 pm

BWI

HLN

6h 42m

1 stop

7:15 am - 9:30 pm

HLN

BWI

12h 15m

2 stops

$379Delta

Mon, Sep 14 - Wed, Sep 30

7:35 am - 12:17 pm

BWI

HLN

6h 42m

1 stop

7:15 am - 9:30 pm

HLN

BWI

12h 15m

2 stops

$411Delta

Mon, Sep 14 - Wed, Sep 30

12:01 pm - 10:24 pm

BWI

HLN

12h 23m

2 stops

7:15 am - 9:30 pm

HLN

BWI

12h 15m

2 stops

$417Delta

Wed, Sep 16 - Wed, Sep 30

7:50 am - 4:41 pm

BWI

HLN

10h 51m

1 stop

5:18 pm - 6:30 am

HLN

BWI

11h 12m

1 stop

$419Alaska Airlines

Wed, Sep 16 - Wed, Sep 30

7:00 am - 12:17 pm

IAD

HLN

7h 17m

1 stop

12:57 pm - 11:22 pm

HLN

IAD

8h 25m

1 stop

$424Delta

Wed, Sep 16 - Wed, Sep 30

6:30 am - 1:33 pm

IAD

HLN

9h 03m

1 stop

2:20 pm - 11:32 pm

HLN

IAD

7h 12m

1 stop

$459United Airlines

Tue, Jul 7 - Fri, Jul 10

7:00 am - 4:41 pm

IAD

HLN

11h 41m

1 stop

5:18 pm - 5:40 am

HLN

IAD

10h 22m

1 stop

$470Alaska Airlines

Wed, Sep 16 - Wed, Sep 30

7:15 pm - 4:41 pm

BWI

HLN

23h 26m

1 stop

5:18 pm - 6:30 am

HLN

BWI

11h 12m

1 stop

$474Alaska Airlines

Wed, Sep 16 - Sun, Sep 20

4:07 pm - 9:39 pm

DCA

HLN

7h 32m

1 stop

6:15 am - 2:56 pm

HLN

DCA

6h 41m

1 stop

$514United Airlines

Tue, Oct 27 - Sat, Oct 31

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

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

United Airlines

Jul 7

IAD6:30 amWashington, D.C. Dulles Intl

9h 03m

1 stop

HLN1:33 pmHelena

Jul 10

HLN2:20 pmHelena

7h 12m

1 stop

IAD11:32 pmWashington, D.C. Dulles Intl

$459

United Airlines

Oct 27

DCA4:07 pmWashington, D.C. Reagan-National

7h 32m

1 stop

HLN9:39 pmHelena

Oct 31

HLN6:15 amHelena

6h 41m

1 stop

DCA2:56 pmWashington, D.C. Reagan-National

$514

United Airlines

Oct 27

IAD8:15 amWashington, D.C. Dulles Intl

14h 44m

2 stops

HLN8:59 pmHelena

Oct 31

HLN2:30 pmHelena

6h 43m

1 stop

IAD11:13 pmWashington, D.C. Dulles Intl

$528

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

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

Alaska Airlines

Sep 16

BWI7:50 amBaltimore/Washington

10h 51m

1 stop

HLN4:41 pmHelena

Sep 30

HLN5:18 pmHelena

11h 12m

1 stop

BWI6:30 amBaltimore/Washington

$419

Alaska Airlines

Sep 16

IAD7:00 amWashington, D.C. Dulles Intl

11h 41m

1 stop

HLN4:41 pmHelena

Sep 30

HLN5:18 pmHelena

10h 22m

1 stop

IAD5:40 amWashington, D.C. Dulles Intl

$470

Alaska Airlines

Sep 16

BWI7:15 pmBaltimore/Washington

23h 26m

1 stop

HLN4:41 pmHelena

Sep 20

HLN5:18 pmHelena

11h 12m

1 stop

BWI6:30 amBaltimore/Washington

$474

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

Wed 9/9

7:00 am-12:17 pm

1 stop7h 17m

Helena

Wed 9/23

12:57 pm-11:22 pm

1 stop8h 25m

$349

BaltimoreHelena

BWI - HLN

BWIHLN

Baltimore/Washington

Mon 9/14

7:35 am-12:17 pm

1 stop6h 42m

Helena

Wed 9/30

7:15 am-9:30 pm

2 stops12h 15m

$379

BaltimoreHelena

BWI - HLN

BWIHLN

Baltimore/Washington

Mon 9/14

7:35 am-12:17 pm

1 stop6h 42m

Helena

Wed 9/30

7:15 am-9:30 pm

2 stops12h 15m

$411

BaltimoreHelena

BWI - HLN

BWIHLN

Baltimore/Washington

Wed 9/16

12:01 pm-10:24 pm

2 stops12h 23m

Helena

Wed 9/30

7:15 am-9:30 pm

2 stops12h 15m

$417

BaltimoreHelena

BWI - HLN

BWIHLN

Baltimore/Washington

Wed 9/16

7:50 am-4:41 pm

1 stop10h 51m

Helena

Wed 9/30

5:18 pm-6:30 am

1 stop11h 12m

$419

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

Wed 9/16

7:00 am-12:17 pm

1 stop7h 17m

Helena

Wed 9/30

12:57 pm-11:22 pm

1 stop8h 25m

$424

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

Tue 7/7

6:30 am-1:33 pm

1 stop9h 03m

Helena

Fri 7/10

2:20 pm-11:32 pm

1 stop7h 12m

$459

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

Wed 9/16

7:00 am-4:41 pm

1 stop11h 41m

Helena

Wed 9/30

5:18 pm-5:40 am

1 stop10h 22m

$470

BaltimoreHelena

BWI - HLN

BWIHLN

Baltimore/Washington

Wed 9/16

7:15 pm-4:41 pm

1 stop23h 26m

Helena

Sun 9/20

5:18 pm-6:30 am

1 stop11h 12m

$474

Quickest round-trip

Washington, D.C.Helena

DCA - HLN

DCAHLN

Washington, D.C. Reagan-National

Tue 10/27

4:07 pm-9:39 pm

1 stop7h 32m

Helena

Sat 10/31

6:15 am-2:56 pm

1 stop6h 41m

$514

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Airlines

Other information

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

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

What airlines fly to Helena?

United Airlines, American Airlines and Delta 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 54% of people opting to fly with this airline when traveling to Helena. Keep in mind that there are 4 different airlines that fly to Helena on a routine basis, so you have a few additional options to choose from.

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

Fastest flight time	6h 42m
Direct flights	None

The fastest flight from Washington, D.C. to Helena takes 6h 42m

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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Frequently asked questions about flying from Washington, D.C. to Helena

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 6h 42m.
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 June 2026.
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 $378	Free Cancellation	Rating 7.4 9,860 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.