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Washington, D.C.

$222+ Cheap flights from Helena (HLN) to Washington, D.C. (WAS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/11. Fares are subject to change and may not be available on all flights or dates of travel.
HLN — WAS
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap flight deals from Helena to Washington, D.C.

Discover tips and strategies to find the most affordable flight options for your journey from Helena (HLN) to Washington, D.C. (WAS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 12, 2025.

Round-trip from

$508
(Alaska Airlines)

One-way from

$222
(Delta)

Popular in

November

Cheapest in

April

Average price

$928
From Helena to Washington, D.C. (WAS)
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One-way flight from Helena to Washington, D.C. (WAS)
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Highest demand for flights based on searches. 24% potential increase in price ($226 potential increase over avg. RT price).
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Cheapest flight prices on average. 12% potential price decrease ($76 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from Helena to Washington, D.C.

Cheapest flights from Helena to Washington, D.C.
Explore the most affordable flight options available from Helena to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This Alaska Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/316:13 pmHLN - DCA
2 stops24h 52mAlaska Airlines
Sun 11/25:00 pmDCA - HLN
1 stop26h 36mAlaska Airlines
Deal found 6/10$508
This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/3012:50 pmHLN - IAD
1 stop8h 59mDelta
Sun 11/27:20 amIAD - HLN
1 stop7h 04mDelta
Deal found 6/10$511
This Alaska Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/316:13 pmHLN - IAD
2 stops20h 53mAlaska Airlines
Sun 11/26:11 pmIAD - HLN
1 stop25h 25mAlaska Airlines
Deal found 6/10$513
This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/315:40 amHLN - BWI
2 stops9h 24mDelta
Sun 11/27:15 amBWI - HLN
1 stop7h 09mDelta
Deal found 6/10$516
This United Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/92:34 pmHLN - IAD
1 stop8h 11mUnited Airlines
Thu 7/1010:10 amIAD - HLN
1 stop8h 45mUnited Airlines
Deal found 6/11$533
This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/312:22 pmHLN - DCA
1 stop22h 34mUnited Airlines
Sun 11/24:07 pmDCA - HLN
1 stop7h 15mUnited Airlines
Deal found 6/10$559
This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/306:40 amHLN - BWI
1 stop10h 41mUnited Airlines
Sun 11/28:20 amBWI - HLN
1 stop7h 07mUnited Airlines
Deal found 6/10$569
This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/125:50 amHLN - DCA
1 stop8h 56mDelta
Mon 7/215:59 pmDCA - HLN
1 stop6h 48mDelta
Deal found 6/10$684

Cheapflights Fare Finder

Customize your flight search to find flights from Helena to Washington, D.C. that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
Use the filters below to find and compare flights from Helena to Washington, D.C. that are best for you.

Fly from

Helena

Fly to

Washington, D.C.

Route

Depart

Return

Price

HelenaWashington, D.C.

HLN - DCA

HLNDCA

Helena

Fri 10/31

6:13 pm-9:05 pm

2 stops24h 52m

Washington, D.C. Reagan-National

Sun 11/2

5:00 pm-5:36 pm

1 stop26h 36m

$508

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Thu 10/30

12:50 pm-11:49 pm

1 stop8h 59m

Washington, D.C. Dulles Intl

Sun 11/2

7:20 am-12:24 pm

1 stop7h 04m

$511

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Fri 10/31

6:13 pm-5:06 pm

2 stops20h 53m

Washington, D.C. Dulles Intl

Sun 11/2

6:11 pm-5:36 pm

1 stop25h 25m

$513

HelenaBaltimore

HLN - BWI

HLNBWI

Helena

Fri 10/31

5:40 am-5:04 pm

2 stops9h 24m

Baltimore/Washington

Sun 11/2

7:15 am-12:24 pm

1 stop7h 09m

$516

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Wed 7/9

2:34 pm-12:45 am

1 stop8h 11m

Washington, D.C. Dulles Intl

Thu 7/10

10:10 am-4:55 pm

1 stop8h 45m

$533

HelenaWashington, D.C.

HLN - DCA

HLNDCA

Helena

Fri 10/31

2:22 pm-2:56 pm

1 stop22h 34m

Washington, D.C. Reagan-National

Sun 11/2

4:07 pm-9:22 pm

1 stop7h 15m

$559

HelenaBaltimore

HLN - BWI

HLNBWI

Helena

Thu 10/30

6:40 am-7:21 pm

1 stop10h 41m

Baltimore/Washington

Sun 11/2

8:20 am-1:27 pm

1 stop7h 07m

$569

HelenaWashington, D.C.

HLN - DCA

HLNDCA

Helena

Sat 7/12

5:50 am-4:46 pm

1 stop8h 56m

Washington, D.C. Reagan-National

Mon 7/21

5:59 pm-10:47 pm

1 stop6h 48m

$684

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Fri 7/11

1:00 pm-11:42 pm

1 stop8h 42m

$222

HelenaWashington, D.C.

HLN - DCA

HLNDCA

Helena

Sat 7/26

5:50 am-4:46 pm

1 stop8h 56m

$222

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 16 results
1
2

Best time to book a flight from Helena to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Helena with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Helena to Washington, D.C.

What is the cheapest month to book a flight from Helena to Washington, D.C.?

Currently, August is the cheapest month in which you can book a flight from Helena to Washington, D.C. (average of $241). Flying from Helena to Washington, D.C. in March is currently the most expensive (average of $290). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from HLN to WAS?

Find hourly flight availability from Helena to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.

A simple way to save on the total cost of your ticket is to fly from Helena to Washington, D.C. at noon. If you’re flexible enough to do this you can expect to save up to 26% on your trip compared to booking a flight in the morning.

Rainfall in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Washington, D.C. ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. when rainfall is around 2.6 in.

Temperature in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Washington, D.C., use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

Reviews of airlines servicing Washington, D.C.

Get insights into the airlines that provide service to Washington, D.C.. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Washington, D.C.. Reviews last updated June 12, 2025.
Read reviews from past customers who have flown Alaska Airlines, Delta and United Airlines from Helena to Washington, D.C.. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,950 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

Find useful and relevant information for your journey from Helena to Washington, D.C.. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Helena to Washington, D.C.?

    Most people fly from Helena (HLN) if they book a flight from Helena to Washington, D.C.. On average, Helena has 0 outbound flights to Washington, D.C. per day from 2 airlines. Helena is conveniently located just 2.7 mi from Helena’s city center.

  • What are the cheapest airlines flying from Helena to Washington, D.C. round-trip?

    According to our current data, Alaska Airlines ($508), Delta ($511), and United Airlines ($533) offers the cheapest pricing from Helena to Washington, D.C.. Alaska Airlines is currently priced 27% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Helena to Washington, D.C. one-way?

    The cheapest airline one-way is Delta, with whom users have recently found tickets for as low as $222. However, be on the lookout for offers from Alaska Airlines and United Airlines, as they are both options that can get you from Helena to Washington, D.C. for a low price.

  • What are the most popular routes from Helena to Washington, D.C.?

    Most travelers choose Helena - Baltimore/Washington, Helena - Washington, D.C. Dulles Intl or Helena - Washington, D.C. Reagan-National when deciding on the best route from Helena to Washington, D.C..

  • Can I find deals for flights from Helena to Washington, D.C. that include hotel bookings?

    Yes. In addition to deals on Helena to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Helena to Washington, D.C.?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Helena to Washington, D.C..

  • Can I find deals for business class flights from Helena to Washington, D.C.?

    Yes. Cheapflights offers flight deals from Helena to Washington, D.C. by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Helena to Washington, D.C.?

    Currently, August is the cheapest month in which you can book a flight from Helena to Washington, D.C. (average of $241). Flying from Helena to Washington, D.C. in March is currently the most expensive (average of $290). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Helena?

Book flights to Helena if you plan to visit one of these locations
Arlington
Alexandria
Woodbridge
Tysons
Silver Spring
Linthicum Heights
Fredericksburg
Gaithersburg
Fairfax
Falls Church
Easton
Herndon
Towson
Bowie
Rockville
Reston
National Harbor
Springfield
Manassas
Dundalk

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Top 2 airlines flying from Helena to Washington, D.C.

Discover the top 2 airlines that operate flights from Helena to Washington, D.C.. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$256Average$752FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$344Average$434FlexibilityNo cancel feeOn-time69%

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