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 48% 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.

What is the cheapest airline that flies from Helena to Washington, D.C.?

Delta and United Airlines are the most popular carriers operating from Helena to Washington, D.C.

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 many operators does momondo search for flights from Helena Airport to Washington, D.C.?

The number of operators available for flights from Helena Airport to Washington, D.C. is 2 as of July 2025.

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.

$250 Cheap Flights from Helena to Washington, D.C. in 2025

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

Round-trip

One-way

Last minute

Cheap round-trip flights

2:34 pm - 12:45 amHLN-IAD

8h 11m1 stop

2:39 pm - 9:11 pmIAD-HLN

8h 32m1 stop

$427United Airlines

Find Deal

qua, ago 13 - qua, ago 20

5:50 am - 4:30 pmHLN-IAD

8h 40m2 stops

7:30 am - 12:20 pmIAD-HLN

6h 50m1 stop

$432Delta

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qua, ago 13 - qua, ago 20

4:02 pm - 7:33 amHLN-IAD

13h 31m1 stop

9:00 am - 3:21 pmIAD-HLN

8h 21m1 stop

$442Alaska Airlines

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ter, set 2 - ter, set 16

5:50 am - 6:52 pmHLN-BWI

11h 02m2 stops

7:15 am - 12:20 pmBWI-HLN

7h 05m1 stop

$479Delta

Find Deal

qua, set 3 - seg, set 8

4:08 pm - 8:59 pmHLN-DCA

26h 51m2 stops

9:59 am - 3:21 pmDCA-HLN

31h 22m2 stops

$483Alaska Airlines

Find Deal

qua, ago 13 - qua, ago 20

5:50 am - 4:30 pmHLN-IAD

8h 40m2 stops

6:00 am - 12:20 pmIAD-HLN

8h 20m2 stops

$487Delta

Find Deal

qua, ago 13 - qua, ago 20

12:50 pm - 11:49 pmHLN-IAD

8h 59m1 stop

7:20 am - 12:24 pmIAD-HLN

7h 04m1 stop

$488Delta

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qua, nov 26 - sex, nov 28

4:02 pm - 5:39 amHLN-BWI

11h 37m1 stop

7:37 pm - 3:21 pmBWI-HLN

21h 44m1 stop

$493Alaska Airlines

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qua, set 3 - seg, set 8

2:30 pm - 5:16 amHLN-IAD

12h 46m1 stop

2:30 pm - 1:47 pmIAD-HLN

25h 17m1 stop

$525United Airlines

Find Deal

qua, dez 10 - sáb, dez 13

2:30 pm - 2:51 pmHLN-DCA

22h 21m1 stop

4:05 pm - 1:47 pmDCA-HLN

23h 42m1 stop

$525United Airlines

Find Deal

qua, dez 10 - sáb, dez 13

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

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

Alaska Airlines

Sep 2

HLN4:02 pmHelena

13h 31m

1 stop

IAD7:33 amWashington, D.C. Dulles Intl

Sep 16

IAD9:00 amWashington, D.C. Dulles Intl

8h 21m

1 stop

HLN3:21 pmHelena

$442

Find similar

Alaska Airlines

Aug 13

HLN4:08 pmHelena

26h 51m

2 stops

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

Aug 20

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

31h 22m

2 stops

HLN3:21 pmHelena

$483

Find similar

Alaska Airlines

Sep 3

HLN4:02 pmHelena

11h 37m

1 stop

BWI5:39 amBaltimore/Washington

Sep 8

BWI7:37 pmBaltimore/Washington

21h 44m

1 stop

HLN3:21 pmHelena

$493

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Delta flights from Helena to Washington, D.C.

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

Delta

Aug 13

HLN5:50 amHelena

8h 40m

2 stops

IAD4:30 pmWashington, D.C. Dulles Intl

Aug 20

IAD7:30 amWashington, D.C. Dulles Intl

6h 50m

1 stop

HLN12:20 pmHelena

$432

Find similar

Delta

Sep 3

HLN5:50 amHelena

11h 02m

2 stops

BWI6:52 pmBaltimore/Washington

Sep 8

BWI7:15 amBaltimore/Washington

7h 05m

1 stop

HLN12:20 pmHelena

$479

Find similar

Delta

Aug 13

HLN5:50 amHelena

8h 40m

2 stops

IAD4:30 pmWashington, D.C. Dulles Intl

Aug 20

IAD6:00 amWashington, D.C. Dulles Intl

8h 20m

2 stops

HLN12:20 pmHelena

$487

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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

What is the cheapest day to depart on your flight to Washington, D.C.?

On average, the least expensive day to fly to Washington, D.C. from Helena is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $498. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Helena to Washington, D.C. for around $825.

What is the cheapest time of day to depart on your flight to Washington, D.C.?

At noon is the cheapest time of day to fly from Helena to Washington, D.C. when you can find flight prices for as low as $514. Flying to Washington, D.C. at noon is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the morning because they tend to be around $689. Of course, these prices can vary depending on the time of year and what airport you fly to.

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.

Best Price Found	$250
Fastest flight time	6h 15m
Direct flights	None
Airports in Washington, D.C.	3 airports

The best one-way flight to Washington, D.C. from Helena in the past 72 hours is $250. The best round-trip flight deal from Helena to Washington, D.C. found on momondo in the last 72 hours is $427.

The fastest flight from Helena to Washington, D.C. takes 6h 15m

There are no direct flights from Helena to Washington, D.C.. Popular non-direct routes for this connection are Helena Airport - Baltimore/Washington Airport, Helena Airport - Washington, D.C. Reagan-National Airport and Helena Airport - Washington, D.C. Dulles Intl Airport.

There are 3 airports near Washington, D.C.: Washington, D.C. Reagan-National (DCA), Baltimore/Washington (BWI), Washington, D.C. Dulles Intl (IAD)

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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 15m.
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 many operators does momondo search for flights from Helena Airport to Washington, D.C.?
The number of operators available for flights from Helena Airport to Washington, D.C. is 2 as of July 2025.
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.
What is the most popular airline from Helena to Washington, D.C.?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Helena to Washington, D.C. is United Airlines (100% of total bookings).

Best airlines flying from Helena to Washington, D.C.

Compare and see reviews for airlines that fly from Helena to Washington, D.C. with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $256	Free Cancellation	Rating 8.0 7,958 reviews		Search Delta flights
United Airlines	PriceFrom $344	Free Cancellation	Rating 7.4 8,864 reviews		Search United Airlines flights

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Colonial Beach

Glen Burnie

Linthicum Heights

Reston

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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.