When did momondo last update prices for flights from Helena Airport to District of Columbia?

Prices for flights from Helena Airport to District of Columbia refresh daily.

How many operators does momondo search for flights from Helena Airport to District of Columbia?

As of June 2026, there is 1 operator available to choose from for flights from Helena Airport to District of Columbia.

How old do you have to be to fly from Helena Airport to District of Columbia?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Helena Airport to District of Columbia.

What documentation or ID do you need to fly to District of Columbia?

The necessary travel and health documents for your District of Columbia trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$180 Cheap Flights from Helena to District of Columbia in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Helena to District of Columbia

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

4:48 pm - 5:40 am

HLN

IAD

10h 52m

1 stop

7:00 am - 4:11 pm

IAD

HLN

11h 11m

1 stop

$349Alaska Airlines

Tue, Oct 27 - Sat, Oct 31

4:48 pm - 5:40 am

HLN

IAD

10h 52m

1 stop

9:35 am - 4:11 pm

IAD

HLN

8h 36m

1 stop

$384Alaska Airlines

Tue, Oct 27 - Sat, Oct 31

7:00 am - 3:50 pm

HLN

IAD

6h 50m

1 stop

2:25 pm - 8:59 pm

IAD

HLN

8h 34m

1 stop

$449United Airlines

Sat, Dec 5 - Tue, Dec 8

7:00 am - 2:56 pm

HLN

DCA

5h 56m

1 stop

4:07 pm - 8:59 pm

DCA

HLN

6h 52m

1 stop

$514United Airlines

Sat, Dec 5 - Tue, Dec 8

2:30 pm - 11:13 pm

HLN

IAD

6h 43m

1 stop

10:10 pm - 8:59 pm

IAD

HLN

24h 49m

2 stops

$525United Airlines

Sat, Dec 5 - Tue, Dec 8

6:15 am - 9:20 pm

HLN

IAD

13h 05m

2 stops

4:15 pm - 9:39 pm

IAD

HLN

7h 24m

1 stop

$532United Airlines

Tue, Oct 27 - Sat, Oct 31

7:00 am - 2:56 pm

HLN

DCA

5h 56m

1 stop

6:00 am - 8:59 pm

DCA

HLN

16h 59m

2 stops

$552United Airlines

Sat, Dec 5 - Tue, Dec 8

7:00 am - 2:56 pm

HLN

DCA

5h 56m

1 stop

4:07 pm - 8:59 pm

DCA

HLN

6h 52m

1 stop

$579United Airlines

Sat, Dec 5 - Tue, Dec 8

4:48 pm - 5:40 am

HLN

IAD

10h 52m

1 stop

7:00 am - 4:11 pm

IAD

HLN

11h 11m

1 stop

$663Alaska Airlines

Sun, Oct 11 - Sun, Oct 18

12:55 pm - 12:41 am

HLN

IAD

9h 46m

2 stops

7:00 am - 12:15 pm

IAD

HLN

7h 15m

1 stop

$709Delta

Thu, Jul 30 - Thu, Aug 6

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United Airlines flights from Helena to District of Columbia

Our best United Airlines deals on Helena to District of Columbia flight tickets

United Airlines

Dec 5

HLN7:00 amHelena

6h 50m

1 stop

IAD3:50 pmWashington, D.C. Dulles Intl

Dec 8

IAD2:25 pmWashington, D.C. Dulles Intl

8h 34m

1 stop

HLN8:59 pmHelena

$449

United Airlines

Dec 5

HLN7:00 amHelena

5h 56m

1 stop

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

Dec 8

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

6h 52m

1 stop

HLN8:59 pmHelena

$514

United Airlines

Dec 5

HLN2:30 pmHelena

6h 43m

1 stop

IAD11:13 pmWashington, D.C. Dulles Intl

Dec 8

IAD10:10 pmWashington, D.C. Dulles Intl

24h 49m

2 stops

HLN8:59 pmHelena

$525

Alaska Airlines flights from Helena to District of Columbia

Our best Alaska Airlines deals on Helena to District of Columbia flight tickets

Alaska Airlines

Oct 27

HLN4:48 pmHelena

10h 52m

1 stop

IAD5:40 amWashington, D.C. Dulles Intl

Oct 31

IAD7:00 amWashington, D.C. Dulles Intl

11h 11m

1 stop

HLN4:11 pmHelena

$349

Alaska Airlines

Oct 27

HLN4:48 pmHelena

10h 52m

1 stop

IAD5:40 amWashington, D.C. Dulles Intl

Oct 31

IAD9:35 amWashington, D.C. Dulles Intl

8h 36m

1 stop

HLN4:11 pmHelena

$384

Alaska Airlines

Oct 11

HLN4:48 pmHelena

10h 52m

1 stop

IAD5:40 amWashington, D.C. Dulles Intl

Oct 18

IAD7:00 amWashington, D.C. Dulles Intl

11h 11m

1 stop

HLN4:11 pmHelena

$663

momondo Fare Finder

Use the filters below to find and compare flights from Helena to District of Columbia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Tue 10/27

4:48 pm-5:40 am

1 stop10h 52m

Washington, D.C. Dulles Intl

Sat 10/31

7:00 am-4:11 pm

1 stop11h 11m

$349

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Tue 10/27

4:48 pm-5:40 am

1 stop10h 52m

Washington, D.C. Dulles Intl

Sat 10/31

9:35 am-4:11 pm

1 stop8h 36m

$384

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Sat 12/5

7:00 am-3:50 pm

1 stop6h 50m

Washington, D.C. Dulles Intl

Tue 12/8

2:25 pm-8:59 pm

1 stop8h 34m

$449

Quickest round-trip

HelenaWashington, D.C.

HLN - DCA

HLNDCA

Helena

Sat 12/5

7:00 am-2:56 pm

1 stop5h 56m

Washington, D.C. Reagan-National

Tue 12/8

4:07 pm-8:59 pm

1 stop6h 52m

$514

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Sat 12/5

2:30 pm-11:13 pm

1 stop6h 43m

Washington, D.C. Dulles Intl

Tue 12/8

10:10 pm-8:59 pm

2 stops24h 49m

$525

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Tue 10/27

6:15 am-9:20 pm

2 stops13h 05m

Washington, D.C. Dulles Intl

Sat 10/31

4:15 pm-9:39 pm

1 stop7h 24m

$532

HelenaWashington, D.C.

HLN - DCA

HLNDCA

Helena

Sat 12/5

7:00 am-2:56 pm

1 stop5h 56m

Washington, D.C. Reagan-National

Tue 12/8

6:00 am-8:59 pm

2 stops16h 59m

$552

HelenaWashington, D.C.

HLN - DCA

HLNDCA

Helena

Sat 12/5

7:00 am-2:56 pm

1 stop5h 56m

Washington, D.C. Reagan-National

Tue 12/8

4:07 pm-8:59 pm

1 stop6h 52m

$579

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Sun 10/11

4:48 pm-5:40 am

1 stop10h 52m

Washington, D.C. Dulles Intl

Sun 10/18

7:00 am-4:11 pm

1 stop11h 11m

$663

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Thu 7/30

12:55 pm-12:41 am

2 stops9h 46m

Washington, D.C. Dulles Intl

Thu 8/6

7:00 am-12:15 pm

1 stop7h 15m

$709

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 Helena to District of Columbia

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 airline that flies from Helena to District of Columbia?

Delta and United Airlines are the most popular carriers operating from Helena to District of Columbia

What airlines fly to District of Columbia?

United Airlines, Delta and Southwest are the top three most popular airlines that fly to District of Columbia from Helena according to our data. United Airlines is the first choice among our users, with 62% of people opting to fly with this airline when traveling to District of Columbia. Keep in mind that there are 5 different airlines that fly to District of Columbia on a routine basis, so you have a few additional options to choose from.

Cheap Helena to District of Columbia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Helena to District of Columbia

Fastest flight time	5h 56m
Direct flights	None

The fastest flight from Helena to District of Columbia takes 5h 56m

There are no direct flights from Helena to District of Columbia. There are no popular flight routes from Helena to District of Columbia.

Search flight deals

Frequently asked questions about flying from Helena to District of Columbia

When did momondo last update prices for flights from Helena Airport to District of Columbia?
Prices for flights from Helena Airport to District of Columbia refresh daily.
How many operators does momondo search for flights from Helena Airport to District of Columbia?
As of June 2026, there is 1 operator available to choose from for flights from Helena Airport to District of Columbia.
How old do you have to be to fly from Helena Airport to District of Columbia?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Helena Airport to District of Columbia.
What documentation or ID do you need to fly to District of Columbia?
The necessary travel and health documents for your District of Columbia trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Helena to District of Columbia

Compare and see reviews for airlines that fly from Helena to District of Columbia with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $348	Free Cancellation	Rating 7.4 9,894 reviews		Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Helena to District of Columbia?

It is quick and easy to find Helena to District of Columbia flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to District of Columbia that suits you.

Can I find flights from Helena to District of Columbia with flexible booking policies on momondo?

momondo does allow users to show only those flights to District of Columbia 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 District of Columbia?

Once you have performed a search for Helena to District of Columbia flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Helena to District of Columbia right now. Can momondo alert me if prices change?

Price alerts on flights to District of Columbia from Helena are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.