How long does it take to fly to Helena?

On average, it takes 5h 07m 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 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 May 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.

$185 Cheap Flights from Washington, D.C. to Helena in 2026

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

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

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

2:43 pm - 9:16 pm

IAD

HLN

8h 33m

1 stop

2:29 pm - 12:40 am

HLN

IAD

8h 11m

1 stop

$349United Airlines

Wed, Sep 9 - Wed, Sep 23

7:10 am - 12:23 pm

BWI

HLN

7h 13m

1 stop

5:45 am - 6:09 pm

HLN

BWI

10h 24m

2 stops

$354Delta

Tue, Sep 15 - Wed, Sep 30

10:16 am - 10:31 pm

IAD

HLN

14h 15m

2 stops

1:00 pm - 11:31 pm

HLN

IAD

8h 31m

1 stop

$354Delta

Tue, Jun 9 - Tue, Jun 23

11:54 am - 10:31 pm

BWI

HLN

12h 37m

2 stops

1:00 pm - 12:40 am

HLN

BWI

9h 40m

2 stops

$359Delta

Tue, Jun 9 - Wed, Jun 24

6:05 am - 12:23 pm

DCA

HLN

8h 18m

2 stops

5:45 am - 4:54 pm

HLN

DCA

9h 09m

2 stops

$359Delta

Fri, May 29 - Sat, May 30

6:16 pm - 4:41 pm

BWI

HLN

24h 25m

1 stop

5:18 pm - 6:30 am

HLN

BWI

11h 12m

1 stop

$369Alaska Airlines

Tue, Sep 8 - Thu, Sep 24

5:54 pm - 4:41 pm

IAD

HLN

24h 47m

1 stop

5:18 pm - 5:40 am

HLN

IAD

10h 22m

1 stop

$369Alaska Airlines

Wed, Sep 16 - Wed, Sep 30

6:30 am - 1:32 pm

IAD

HLN

9h 02m

1 stop

2:35 pm - 12:32 am

HLN

IAD

7h 57m

1 stop

$371United Airlines

Sat, Sep 12 - Thu, Sep 24

4:18 pm - 9:03 pm

BWI

HLN

6h 45m

1 stop

2:30 pm - 11:00 pm

HLN

BWI

6h 30m

1 stop

$378United Airlines

Fri, Oct 23 - Thu, Nov 5

7:00 am - 4:41 pm

IAD

HLN

11h 41m

1 stop

5:18 pm - 5:40 am

HLN

IAD

10h 22m

1 stop

$413Alaska Airlines

Thu, Sep 10 - Thu, Sep 24

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Delta flights from Washington, D.C. to Helena

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

Delta

Sep 15

BWI7:10 amBaltimore/Washington

7h 13m

1 stop

HLN12:23 pmHelena

Sep 29

HLN5:45 amHelena

10h 24m

2 stops

BWI6:09 pmBaltimore/Washington

$354

Delta

May 29

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

8h 18m

2 stops

HLN12:23 pmHelena

May 30

HLN5:45 amHelena

9h 09m

2 stops

DCA4:54 pmWashington, D.C. Reagan-National

$359

Delta

May 29

BWI7:00 amBaltimore/Washington

7h 23m

1 stop

HLN12:23 pmHelena

May 30

HLN1:03 pmHelena

8h 22m

1 stop

BWI11:25 pmBaltimore/Washington

$374

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

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

United Airlines

Sep 9

IAD2:43 pmWashington, D.C. Dulles Intl

8h 33m

1 stop

HLN9:16 pmHelena

Sep 23

HLN2:29 pmHelena

8h 11m

1 stop

IAD12:40 amWashington, D.C. Dulles Intl

$349

United Airlines

Sep 12

IAD6:30 amWashington, D.C. Dulles Intl

9h 02m

1 stop

HLN1:32 pmHelena

Sep 24

HLN2:35 pmHelena

7h 57m

1 stop

IAD12:32 amWashington, D.C. Dulles Intl

$371

United Airlines

Oct 23

BWI4:18 pmBaltimore/Washington

6h 45m

1 stop

HLN9:03 pmHelena

Nov 5

HLN2:30 pmHelena

6h 30m

1 stop

BWI11:00 pmBaltimore/Washington

$378

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

2:43 pm-9:16 pm

1 stop8h 33m

Helena

Wed 9/23

2:29 pm-12:40 am

1 stop8h 11m

$349

BaltimoreHelena

BWI - HLN

BWIHLN

Baltimore/Washington

Tue 9/15

7:10 am-12:23 pm

1 stop7h 13m

Helena

Wed 9/30

5:45 am-6:09 pm

2 stops10h 24m

$354

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

Tue 6/9

10:16 am-10:31 pm

2 stops14h 15m

Helena

Tue 6/23

1:00 pm-11:31 pm

1 stop8h 31m

$354

BaltimoreHelena

BWI - HLN

BWIHLN

Baltimore/Washington

Tue 6/9

11:54 am-10:31 pm

2 stops12h 37m

Helena

Wed 6/24

1:00 pm-12:40 am

2 stops9h 40m

$359

Washington, D.C.Helena

DCA - HLN

DCAHLN

Washington, D.C. Reagan-National

Fri 5/29

6:05 am-12:23 pm

2 stops8h 18m

Helena

Sat 5/30

5:45 am-4:54 pm

2 stops9h 09m

$359

BaltimoreHelena

BWI - HLN

BWIHLN

Baltimore/Washington

Tue 9/8

6:16 pm-4:41 pm

1 stop24h 25m

Helena

Thu 9/24

5:18 pm-6:30 am

1 stop11h 12m

$369

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

Wed 9/16

5:54 pm-4:41 pm

1 stop24h 47m

Helena

Wed 9/30

5:18 pm-5:40 am

1 stop10h 22m

$369

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

Sat 9/12

6:30 am-1:32 pm

1 stop9h 02m

Helena

Thu 9/24

2:35 pm-12:32 am

1 stop7h 57m

$371

Quickest round-trip

BaltimoreHelena

BWI - HLN

BWIHLN

Baltimore/Washington

Fri 10/23

4:18 pm-9:03 pm

1 stop6h 45m

Helena

Thu 11/5

2:30 pm-11:00 pm

1 stop6h 30m

$378

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

Thu 9/10

7:00 am-4:41 pm

1 stop11h 41m

Helena

Thu 9/24

5:18 pm-5:40 am

1 stop10h 22m

$413

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 Southwest 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 50% 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 53m
Direct flights	None

The fastest flight from Washington, D.C. to Helena takes 6h 53m

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 53m.
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 May 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 9,681 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.