How long does it take to fly to Helena?

On average, it takes 4h 51m 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 40m.

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 March 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.

$206 Cheap Flights from Washington, D.C. to Helena in 2026

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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.

6:30 am - 3:31 pm

IAD

HLN

11h 01m

1 stop

4:08 pm - 7:28 am

HLN

IAD

13h 20m

1 stop

$369Alaska Airlines

Sat, Aug 22 - Wed, Aug 26

7:16 pm - 5:45 pm

BWI

HLN

24h 29m

1 stop

6:22 pm - 5:44 am

HLN

BWI

9h 22m

1 stop

$394Alaska Airlines

Fri, May 1 - Mon, May 4

7:25 am - 12:23 pm

IAD

HLN

6h 58m

1 stop

12:50 pm - 11:51 pm

HLN

IAD

9h 01m

1 stop

$401Delta

Tue, Aug 18 - Sat, Aug 29

7:25 am - 12:23 pm

IAD

HLN

6h 58m

1 stop

12:50 pm - 12:10 am

HLN

IAD

9h 20m

2 stops

$406Delta

Tue, Aug 18 - Sat, Aug 29

7:20 pm - 5:45 pm

IAD

HLN

24h 25m

1 stop

6:22 pm - 12:09 am

HLN

IAD

27h 47m

1 stop

$407Alaska Airlines

Fri, May 1 - Mon, May 4

6:05 am - 12:23 pm

DCA

HLN

8h 18m

2 stops

5:45 am - 6:59 pm

HLN

DCA

11h 14m

2 stops

$411Delta

Thu, May 28 - Wed, Jun 3

2:35 pm - 9:20 pm

IAD

HLN

8h 45m

1 stop

2:20 pm - 11:32 pm

HLN

IAD

7h 12m

1 stop

$444United Airlines

Thu, May 28 - Wed, Jun 3

4:23 pm - 9:20 pm

BWI

HLN

6h 57m

1 stop

2:20 pm - 11:30 pm

HLN

BWI

7h 10m

1 stop

$469United Airlines

Fri, May 29 - Tue, Jun 2

2:43 pm - 9:16 pm

IAD

HLN

8h 33m

1 stop

2:29 pm - 11:24 pm

HLN

IAD

6h 55m

1 stop

$469United Airlines

Sat, Aug 15 - Mon, Aug 31

8:30 am - 1:33 pm

BWI

HLN

7h 03m

1 stop

2:20 pm - 11:30 pm

HLN

BWI

7h 10m

1 stop

$494United Airlines

Thu, May 28 - Tue, Jun 2

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

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

Alaska Airlines

Aug 22

IAD6:30 amWashington, D.C. Dulles Intl

11h 01m

1 stop

HLN3:31 pmHelena

Aug 26

HLN4:08 pmHelena

13h 20m

1 stop

IAD7:28 amWashington, D.C. Dulles Intl

$369

Alaska Airlines

May 1

BWI7:16 pmBaltimore/Washington

24h 29m

1 stop

HLN5:45 pmHelena

May 4

HLN6:22 pmHelena

9h 22m

1 stop

BWI5:44 amBaltimore/Washington

$394

Alaska Airlines

May 1

IAD7:20 pmWashington, D.C. Dulles Intl

24h 25m

1 stop

HLN5:45 pmHelena

May 4

HLN6:22 pmHelena

27h 47m

1 stop

IAD12:09 amWashington, D.C. Dulles Intl

$407

Delta flights from Washington, D.C. to Helena

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

Delta

Aug 18

IAD7:25 amWashington, D.C. Dulles Intl

6h 58m

1 stop

HLN12:23 pmHelena

Aug 31

HLN12:50 pmHelena

9h 01m

1 stop

IAD11:51 pmWashington, D.C. Dulles Intl

$401

Delta

Aug 18

IAD7:25 amWashington, D.C. Dulles Intl

6h 58m

1 stop

HLN12:23 pmHelena

Aug 29

HLN12:50 pmHelena

9h 20m

2 stops

IAD12:10 amWashington, D.C. Dulles Intl

$406

Delta

May 28

DCA6:05 amWashington, D.C. Reagan-National

8h 18m

2 stops

HLN12:23 pmHelena

Jun 3

HLN5:45 amHelena

11h 14m

2 stops

DCA6:59 pmWashington, D.C. Reagan-National

$411

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

Sat 8/22

6:30 am-3:31 pm

1 stop11h 01m

Helena

Wed 8/26

4:08 pm-7:28 am

1 stop13h 20m

$369

BaltimoreHelena

BWI - HLN

BWIHLN

Baltimore/Washington

Fri 5/1

7:16 pm-5:45 pm

1 stop24h 29m

Helena

Mon 5/4

6:22 pm-5:44 am

1 stop9h 22m

$394

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

Tue 8/18

7:25 am-12:23 pm

1 stop6h 58m

Helena

Sat 8/29

12:50 pm-11:51 pm

1 stop9h 01m

$401

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

Tue 8/18

7:25 am-12:23 pm

1 stop6h 58m

Helena

Sat 8/29

12:50 pm-12:10 am

2 stops9h 20m

$406

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

Fri 5/1

7:20 pm-5:45 pm

1 stop24h 25m

Helena

Mon 5/4

6:22 pm-12:09 am

1 stop27h 47m

$407

Washington, D.C.Helena

DCA - HLN

DCAHLN

Washington, D.C. Reagan-National

Thu 5/28

6:05 am-12:23 pm

2 stops8h 18m

Helena

Wed 6/3

5:45 am-6:59 pm

2 stops11h 14m

$411

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

Thu 5/28

2:35 pm-9:20 pm

1 stop8h 45m

Helena

Wed 6/3

2:20 pm-11:32 pm

1 stop7h 12m

$444

Quickest round-trip

BaltimoreHelena

BWI - HLN

BWIHLN

Baltimore/Washington

Fri 5/29

4:23 pm-9:20 pm

1 stop6h 57m

Helena

Tue 6/2

2:20 pm-11:30 pm

1 stop7h 10m

$469

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

Sat 8/15

2:43 pm-9:16 pm

1 stop8h 33m

Helena

Mon 8/31

2:29 pm-11:24 pm

1 stop6h 55m

$469

BaltimoreHelena

BWI - HLN

BWIHLN

Baltimore/Washington

Thu 5/28

8:30 am-1:33 pm

1 stop7h 03m

Helena

Tue 6/2

2:20 pm-11:30 pm

1 stop7h 10m

$494

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?

Alaska Airlines, Delta, and United 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 47% 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 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 57m
Direct flights	None

The fastest flight from Washington, D.C. to Helena takes 6h 57m

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

Search flight deals

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 57m.
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 March 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 9,455 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.