What airlines fly to Washington, D.C.?

United Airlines, Delta and American Airlines are the top three most popular airlines that fly to Washington, D.C. from Helena according to our data. United Airlines is the first choice among our users, with 57% of people opting to fly with this airline when traveling to Washington, D.C.. Keep in mind that there are 4 different airlines that fly to Washington, D.C. on a routine basis, so you have a few additional options to choose from.

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

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

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

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Helena Airport to Washington, D.C..

What documentation or ID do you need to fly to Washington, D.C.?

The required travel and health documents for your Washington, D.C. 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 Washington, D.C.. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$344 Cheap Flights from Helena to Washington, D.C. in 2025/26

1 adult

0 bags

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

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4:36 pm - 9:59 pm

HLN

DCA

27h 23m1 stop

8:00 am - 3:59 pm

DCA

HLN

9h 59m1 stop

$344Alaska Airlines

Sat, Feb 14 - Wed, Feb 18

4:36 pm - 9:59 pm

HLN

DCA

27h 23m1 stop

8:00 am - 3:59 pm

DCA

HLN

9h 59m1 stop

$369Alaska Airlines

Wed, Feb 18 - Sat, Feb 21

6:48 pm - 4:26 pm

HLN

IAD

19h 38m1 stop

6:04 pm - 6:11 pm

IAD

HLN

26h 07m1 stop

$395Alaska Airlines

Fri, Jan 30 - Tue, Feb 3

4:36 pm - 9:59 pm

HLN

DCA

27h 23m1 stop

5:06 pm - 3:59 pm

DCA

HLN

24h 53m2 stops

$439Alaska Airlines

Sat, Feb 14 - Wed, Feb 18

5:30 am - 6:51 pm

HLN

DCA

11h 21m2 stops

12:29 pm - 10:30 pm

DCA

HLN

12h 01m2 stops

$455Delta

Tue, Mar 31 - Tue, Apr 7

4:36 pm - 5:46 pm

HLN

BWI

23h 10m1 stop

6:46 pm - 3:59 pm

BWI

HLN

23h 13m1 stop

$472Alaska Airlines

Sat, Feb 14 - Wed, Feb 18

6:15 am - 4:46 pm

HLN

IAD

8h 31m1 stop

2:21 pm - 9:33 pm

IAD

HLN

9h 12m1 stop

$483United Airlines

Tue, Mar 31 - Tue, Apr 7

6:15 am - 9:20 pm

HLN

IAD

13h 05m2 stops

2:24 pm - 9:26 pm

IAD

HLN

9h 02m1 stop

$555United Airlines

Fri, Jan 30 - Tue, Feb 3

6:15 am - 9:23 pm

HLN

BWI

13h 08m2 stops

4:18 pm - 9:33 pm

BWI

HLN

7h 15m1 stop

$562United Airlines

Tue, Mar 31 - Tue, Apr 7

5:30 am - 7:19 pm

HLN

IAD

11h 49m2 stops

12:14 pm - 10:30 pm

IAD

HLN

12h 16m2 stops

$832Delta

Tue, Mar 31 - Tue, Apr 7

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

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

United Airlines

Mar 31

HLN6:15 amHelena

8h 31m

1 stop

IAD4:46 pmWashington, D.C. Dulles Intl

Apr 7

IAD2:21 pmWashington, D.C. Dulles Intl

9h 12m

1 stop

HLN9:33 pmHelena

$483

Find similar

United Airlines

Jan 30

HLN6:15 amHelena

13h 05m

2 stops

IAD9:20 pmWashington, D.C. Dulles Intl

Feb 3

IAD2:24 pmWashington, D.C. Dulles Intl

9h 02m

1 stop

HLN9:26 pmHelena

$555

Find similar

United Airlines

Mar 31

HLN6:15 amHelena

13h 08m

2 stops

BWI9:23 pmBaltimore/Washington

Apr 7

BWI4:18 pmBaltimore/Washington

7h 15m

1 stop

HLN9:33 pmHelena

$562

Find similar

Delta flights from Helena to Washington, D.C.

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

Delta

Mar 31

HLN5:30 amHelena

11h 21m

2 stops

DCA6:51 pmWashington, D.C. Reagan-National

Apr 7

DCA12:29 pmWashington, D.C. Reagan-National

12h 01m

2 stops

HLN10:30 pmHelena

$455

Find similar

Delta

Mar 31

HLN5:30 amHelena

11h 49m

2 stops

IAD7:19 pmWashington, D.C. Dulles Intl

Apr 7

IAD12:14 pmWashington, D.C. Dulles Intl

12h 16m

2 stops

HLN10:30 pmHelena

$832

Find similar

Fly from

Fly to

Route

Depart

Return

Price

HelenaWashington, D.C.

HLN - DCA

HLNDCA

Helena

Sat 2/14

4:36 pm-9:59 pm

1 stop27h 23m

Washington, D.C. Reagan-National

Wed 2/18

8:00 am-3:59 pm

1 stop9h 59m

$344

HelenaWashington, D.C.

HLN - DCA

HLNDCA

Helena

Wed 2/18

4:36 pm-9:59 pm

1 stop27h 23m

Washington, D.C. Reagan-National

Sat 2/21

8:00 am-3:59 pm

1 stop9h 59m

$369

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Fri 1/30

6:48 pm-4:26 pm

1 stop19h 38m

Washington, D.C. Dulles Intl

Tue 2/3

6:04 pm-6:11 pm

1 stop26h 07m

$395

HelenaWashington, D.C.

HLN - DCA

HLNDCA

Helena

Sat 2/14

4:36 pm-9:59 pm

1 stop27h 23m

Washington, D.C. Reagan-National

Wed 2/18

5:06 pm-3:59 pm

2 stops24h 53m

$439

HelenaWashington, D.C.

HLN - DCA

HLNDCA

Helena

Tue 3/31

5:30 am-6:51 pm

2 stops11h 21m

Washington, D.C. Reagan-National

Tue 4/7

12:29 pm-10:30 pm

2 stops12h 01m

$455

HelenaBaltimore

HLN - BWI

HLNBWI

Helena

Sat 2/14

4:36 pm-5:46 pm

1 stop23h 10m

Baltimore/Washington

Wed 2/18

6:46 pm-3:59 pm

1 stop23h 13m

$472

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Tue 3/31

6:15 am-4:46 pm

1 stop8h 31m

Washington, D.C. Dulles Intl

Tue 4/7

2:21 pm-9:33 pm

1 stop9h 12m

$483

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Fri 1/30

6:15 am-9:20 pm

2 stops13h 05m

Washington, D.C. Dulles Intl

Tue 2/3

2:24 pm-9:26 pm

1 stop9h 02m

$555

HelenaBaltimore

HLN - BWI

HLNBWI

Helena

Tue 3/31

6:15 am-9:23 pm

2 stops13h 08m

Baltimore/Washington

Tue 4/7

4:18 pm-9:33 pm

1 stop7h 15m

$562

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Tue 3/31

5:30 am-7:19 pm

2 stops11h 49m

Washington, D.C. Dulles Intl

Tue 4/7

12:14 pm-10:30 pm

2 stops12h 16m

$832

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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

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

Airlines

Can stopping save me money on Helena to Washington, D.C. flights?

You could potentially save up to 8% on your flight if you consider stops on a Helena to Washington, D.C. flight.

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

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

Estimated round-trip price

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

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

Fastest flight time	6h 44m
Direct flights	None

The fastest flight from Helena to Washington, D.C. takes 6h 44m

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

Search flight deals

How far is Helena to Washington, D.C. by plane?
There are 1835.3 mi between Helena and Washington, D.C.. In terms of flight time, this usually takes a little over 6h 44m.
When did momondo last update prices for flights from Helena Airport to Washington, D.C.?
Prices for flights from Helena Airport to Washington, D.C. refresh daily.
How old do you have to be to fly from Helena Airport to Washington, D.C.?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Helena Airport to Washington, D.C..
What documentation or ID do you need to fly to Washington, D.C.?
The required travel and health documents for your Washington, D.C. 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 Washington, D.C.. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Alexandria

National Harbor

Gettysburg

Arlington

Waldorf

Woodbridge

Tysons

Laurel

Colonial Beach

Silver Spring

Towson

Fredericksburg

Rockville

Gaithersburg

Manassas

Fairfax

Springfield

Glen Burnie

Reston

Linthicum Heights

Why use momondo?

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

Finding the right flight to Washington, D.C. from Helena is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Washington, D.C. quick and easy, saving you time and money.

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

momondo does allow users to show only those flights to Washington, D.C. from Helena which offer a flexible booking policy as well as other useful filters and features.

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

momondo helps you find the best flight between Helena and Washington, D.C. by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are not ready to book a flight from Helena to Washington, D.C. now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Washington, D.C. and let you know when they change.