What airlines fly to District of Columbia?

United Airlines, Delta and American Airlines 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 50% of people opting to fly with this airline when traveling to District of Columbia. Keep in mind that there are 4 different airlines that fly to District of Columbia on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Helena to District of Columbia?

Alaska Airlines, Delta, and United Airlines are the most popular carriers operating 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 September 2025, 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.

$268 Cheap Flights from Helena to District of Columbia in 2025/26

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Find the cheapest flights from Helena to District of Columbia

Round-trip

One-way

Cheap round-trip flights

6:28 pm - 4:08 pmHLN-DCA

19h 40m1 stop

5:00 pm - 5:51 pmDCA-HLN

26h 51m1 stop

$432Alaska Airlines

Find Deal

Wed, Dec 10 - Sat, Dec 13

6:28 pm - 9:59 pmHLN-DCA

25h 31m1 stop

8:00 am - 5:51 pmDCA-HLN

11h 51m1 stop

$447Alaska Airlines

Find Deal

Wed, Dec 10 - Sat, Dec 13

6:28 pm - 9:02 pmHLN-DCA

24h 34m2 stops

8:59 am - 5:51 pmDCA-HLN

34h 52m2 stops

$483Alaska Airlines

Find Deal

Mon, Dec 8 - Fri, Dec 12

1:00 pm - 11:33 pmHLN-IAD

8h 33m1 stop

7:10 am - 12:26 pmIAD-HLN

7h 16m1 stop

$491Delta

Find Deal

Thu, Nov 6 - Sun, Nov 9

5:30 am - 6:03 pmHLN-DCA

10h 33m2 stops

3:06 pm - 12:26 pmDCA-HLN

23h 20m2 stops

$494Delta

Find Deal

Wed, Dec 10 - Sat, Dec 13

6:30 am - 7:08 pmHLN-IAD

10h 38m1 stop

4:00 pm - 1:47 pmIAD-HLN

23h 47m1 stop

$497United Airlines

Find Deal

Wed, Dec 10 - Sat, Dec 13

6:30 am - 4:30 pmHLN-IAD

8h 00m1 stop

2:30 pm - 9:22 pmIAD-HLN

8h 52m1 stop

$503United Airlines

Find Deal

Wed, Dec 10 - Sat, Dec 13

1:06 pm - 11:39 pmHLN-DCA

8h 33m2 stops

3:06 pm - 12:26 pmDCA-HLN

23h 20m2 stops

$504Delta

Find Deal

Wed, Dec 10 - Sat, Dec 13

6:30 am - 7:08 pmHLN-IAD

10h 38m1 stop

8:20 am - 9:22 pmIAD-HLN

15h 02m2 stops

$548United Airlines

Find Deal

Wed, Dec 10 - Sat, Dec 13

6:30 am - 10:04 pmHLN-DCA

13h 34m2 stops

4:05 pm - 1:47 pmDCA-HLN

23h 42m1 stop

$570United Airlines

Find Deal

Wed, Dec 10 - Sat, Dec 13

Delta flights from Helena to District of Columbia

Our best Delta deals on Helena to District of Columbia flight tickets

Delta

Nov 6

HLN1:00 pmHelena

8h 33m

1 stop

IAD11:33 pmWashington, D.C. Dulles Intl

Nov 9

IAD7:10 amWashington, D.C. Dulles Intl

7h 16m

1 stop

HLN12:26 pmHelena

$491

Find similar

Delta

Dec 10

HLN5:30 amHelena

10h 33m

2 stops

DCA6:03 pmWashington, D.C. Reagan-National

Dec 13

DCA3:06 pmWashington, D.C. Reagan-National

23h 20m

2 stops

HLN12:26 pmHelena

$494

Find similar

Delta

Dec 10

HLN1:06 pmHelena

8h 33m

2 stops

DCA11:39 pmWashington, D.C. Reagan-National

Dec 13

DCA3:06 pmWashington, D.C. Reagan-National

23h 20m

2 stops

HLN12:26 pmHelena

$504

Find similar

Alaska Airlines flights from Helena to District of Columbia

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

Alaska Airlines

Dec 10

HLN6:28 pmHelena

19h 40m

1 stop

DCA4:08 pmWashington, D.C. Reagan-National

Dec 13

DCA5:00 pmWashington, D.C. Reagan-National

26h 51m

1 stop

HLN5:51 pmHelena

$432

Find similar

Alaska Airlines

Dec 10

HLN6:28 pmHelena

25h 31m

1 stop

DCA9:59 pmWashington, D.C. Reagan-National

Dec 13

DCA8:00 amWashington, D.C. Reagan-National

11h 51m

1 stop

HLN5:51 pmHelena

$447

Find similar

Alaska Airlines

Dec 8

HLN6:28 pmHelena

24h 34m

2 stops

DCA9:02 pmWashington, D.C. Reagan-National

Dec 12

DCA8:59 amWashington, D.C. Reagan-National

34h 52m

2 stops

HLN5:51 pmHelena

$483

Find similar

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

HelenaWashington, D.C.

HLN - DCA

HLNDCA

Helena

Wed 12/10

6:28 pm-4:08 pm

1 stop19h 40m

Washington, D.C. Reagan-National

Sat 12/13

5:00 pm-5:51 pm

1 stop26h 51m

$432

HelenaWashington, D.C.

HLN - DCA

HLNDCA

Helena

Wed 12/10

6:28 pm-9:59 pm

1 stop25h 31m

Washington, D.C. Reagan-National

Sat 12/13

8:00 am-5:51 pm

1 stop11h 51m

$447

HelenaWashington, D.C.

HLN - DCA

HLNDCA

Helena

Mon 12/8

6:28 pm-9:02 pm

2 stops24h 34m

Washington, D.C. Reagan-National

Fri 12/12

8:59 am-5:51 pm

2 stops34h 52m

$483

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Thu 11/6

1:00 pm-11:33 pm

1 stop8h 33m

Washington, D.C. Dulles Intl

Sun 11/9

7:10 am-12:26 pm

1 stop7h 16m

$491

HelenaWashington, D.C.

HLN - DCA

HLNDCA

Helena

Wed 12/10

5:30 am-6:03 pm

2 stops10h 33m

Washington, D.C. Reagan-National

Sat 12/13

3:06 pm-12:26 pm

2 stops23h 20m

$494

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Wed 12/10

6:30 am-7:08 pm

1 stop10h 38m

Washington, D.C. Dulles Intl

Sat 12/13

4:00 pm-1:47 pm

1 stop23h 47m

$497

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Wed 12/10

6:30 am-4:30 pm

1 stop8h 00m

Washington, D.C. Dulles Intl

Sat 12/13

2:30 pm-9:22 pm

1 stop8h 52m

$503

HelenaWashington, D.C.

HLN - DCA

HLNDCA

Helena

Wed 12/10

1:06 pm-11:39 pm

2 stops8h 33m

Washington, D.C. Reagan-National

Sat 12/13

3:06 pm-12:26 pm

2 stops23h 20m

$504

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Wed 12/10

6:30 am-7:08 pm

1 stop10h 38m

Washington, D.C. Dulles Intl

Sat 12/13

8:20 am-9:22 pm

2 stops15h 02m

$548

HelenaWashington, D.C.

HLN - DCA

HLNDCA

Helena

Wed 12/10

6:30 am-10:04 pm

2 stops13h 34m

Washington, D.C. Reagan-National

Sat 12/13

4:05 pm-1:47 pm

1 stop23h 42m

$570

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

Prices

Airlines

What is the cheapest day to depart on your flight to District of Columbia?

The cheapest day to depart on your flight to District of Columbia is on a Tuesday when prices can be found for as low as $498. This is often the case because there is less demand to fly during this day of the week. On the other hand, Sunday is the most expensive day to depart from Helena because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $825.

What is the cheapest time of day to depart on your flight to District of Columbia?

Flying to District of Columbia from Helena at noon is the least expensive time of day to depart. momondo users have found prices as low as $514 when looking at flights departing at noon. Flights to District of Columbia are more costly in the morning, with an average ticket price of $689. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

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

Direct flights	None

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

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 September 2025, 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 $344	Free Cancellation	Rating 7.4 8,929 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.

An easier way to manage your District of Columbia trip

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Find better results for your trip to District of Columbia

Popular cities in District of Columbia

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Cheap flights from Helena to District of Columbia from $268

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Helena to District of Columbia departing on 1/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Helena to District of Columbia

Cheap round-trip flights

Cheap one-way flights

Delta flights from Helena to District of Columbia

Our best Delta deals on Helena to District of Columbia flight tickets

Alaska Airlines flights from Helena to District of Columbia

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

momondo Fare Finder

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

See travel insights to District of Columbia from

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 day to depart on your flight to District of Columbia?

What is the cheapest time of day to depart on your flight to District of Columbia?

What is the cheapest airline that flies from Helena to District of Columbia?

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

What airlines fly to District of Columbia?

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

Direct flights

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

How many operators does momondo search 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?

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

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

Why use momondo?

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

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

How can momondo help me find flights from Helena to District of Columbia?

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

An easier way to manage your District of Columbia trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to District of Columbia

Popular cities in District of Columbia

Popular flights according to clicks in the last 7 days on momondo