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$217+ Cheap flights from Helena (HLN) to Dulles Intl (IAD)

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 10/2. Fares are subject to change and may not be available on all flights or dates of travel.
HLN — IAD
Jul 30 — Aug 61
From?
To?
Tue 7/30
Tue 8/6
1 adult, Economy
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Cheap flight deals from Helena to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Helena (HLN) to Dulles Intl (IAD). 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 July 25, 2024.

Round-trip from

$488
(Alaska Airlines)

One-way from

$217
(Delta)
From Helena to Washington, D.C. Dulles Intl
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One-way flight from Helena to Washington, D.C. Dulles Intl
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What is the cheapest day to fly round-trip from Helena to Washington, D.C. Dulles Intl Airport?

Saturday flights are generally found to be more expensive for flights from Helena to Washington, D.C. Dulles Intl Airport. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Washington, D.C. Dulles Intl Airport.

What is the cheapest month to fly from Helena to Washington, D.C. Dulles Intl Airport?

The best pricing can be found in the month of July. Prices to Washington, D.C. Dulles Intl Airport from Helena average $658. You can even find prices in July for less than $658, as users have found deals to Washington, D.C. Dulles Intl Airport from as low as $460. The month of February appears to be one of the more expensive times to travel to Washington, D.C. Dulles Intl Airport from Helena. Flying in the targeted month can save you up to 53%.

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

A simple way to save on the total cost of your ticket is to fly from Helena to Washington, D.C. Dulles Intl Airport in the morning. If you’re flexible enough to do this you can expect to save up to 10% on your trip compared to booking a flight at noon.

Cheap Helena to Dulles Intl flights in July & August 2024

Find cheap flight options from Helena to Dulles Intl specifically for the months of July and August 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,752,877 searches. Prices were last updated on July 25, 2024.
Check out some of the best flight deals from Helena to Washington, D.C. in 2024. Check back regularly for other flight deals.
This Alaska Airlines deal was found by Cheapflights users on 7/24. 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.
Thu 8/227:04 amHLN - IAD
1 stop14h 55mAlaska Airlines
Mon 8/265:38 pmIAD - HLN
2 stops32h 16mAlaska Airlines
Deal found 7/24$530
This Alaska Airlines deal was found by Cheapflights users on 7/24. 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.
Thu 8/227:04 amHLN - IAD
1 stop14h 55mAlaska Airlines
Mon 8/267:09 pmIAD - HLN
1 stop30h 45mAlaska Airlines
Deal found 7/24$545
This Alaska Airlines deal was found by Cheapflights users on 7/25. 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.
Thu 8/227:04 amHLN - IAD
1 stop14h 55mAlaska Airlines
Mon 8/265:38 pmIAD - HLN
2 stops23h 23mAlaska Airlines
Deal found 7/25$550
This United Airlines deal was found by Cheapflights users on 7/25. 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.
Sun 8/252:26 pmHLN - IAD
1 stop6h 33mUnited Airlines
Sat 8/314:10 pmIAD - HLN
1 stop7h 10mUnited Airlines
Deal found 7/25$568
This Alaska Airlines deal was found by Cheapflights users on 7/25. 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.
Sun 8/253:44 pmHLN - IAD
2 stops46h 49mAlaska Airlines
Sat 8/317:09 pmIAD - HLN
1 stop21h 55mAlaska Airlines
Deal found 7/25$591
This Alaska Airlines deal was found by Cheapflights users on 7/25. 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.
Sun 8/253:44 pmHLN - IAD
2 stops46h 49mAlaska Airlines
Sat 8/315:38 pmIAD - HLN
2 stops32h 16mAlaska Airlines
Deal found 7/25$602
This Alaska Airlines deal was found by Cheapflights users on 7/25. 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.
Thu 8/223:44 pmHLN - IAD
2 stops22h 49mAlaska Airlines
Mon 8/265:38 pmIAD - HLN
2 stops32h 16mAlaska Airlines
Deal found 7/25$605
This Alaska Airlines deal was found by Cheapflights users on 7/24. 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.
Thu 8/223:44 pmHLN - IAD
2 stops22h 49mAlaska Airlines
Mon 8/265:38 pmIAD - HLN
2 stops32h 16mAlaska Airlines
Deal found 7/24$650
This United deal was found by Cheapflights users on 7/25. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/262:30 pmHLN - IAD
2 stops19h 04mUnited Airlines
Thu 8/17:55 pmIAD - HLN
1 stop27h 23mUnited Airlines
Deal found 7/25$897

Helena to Dulles Intl 2024 flight deals

Discover exclusive flight deals for travel between Helena and Dulles Intl in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,752,877 searches. Data last updated July 25, 2024.
Check out some of the best flight deals from Helena to Washington, D.C. in 2024. Check back regularly for other flight deals.
This Alaska Airlines deal was found by Cheapflights users on 7/25. 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.
Wed 9/47:04 amHLN - IAD
1 stop9h 05mAlaska Airlines
Fri 9/67:09 pmIAD - HLN
1 stop21h 55mAlaska Airlines
Deal found 7/25$481
This Alaska Airlines deal was found by Cheapflights users on 7/25. 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.
Wed 9/43:44 pmHLN - IAD
1 stop21h 32mAlaska Airlines
Fri 9/65:57 pmIAD - HLN
2 stops23h 07mAlaska Airlines
Deal found 7/25$486
This Alaska Airlines deal was found by Cheapflights users on 7/25. 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.
Mon 9/93:44 pmHLN - IAD
2 stops22h 49mAlaska Airlines
Fri 9/137:09 pmIAD - HLN
1 stop21h 55mAlaska Airlines
Deal found 7/25$488
This Alaska Airlines deal was found by Cheapflights users on 7/24. 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.
Mon 9/93:44 pmHLN - IAD
1 stop30h 15mAlaska Airlines
Fri 9/137:09 pmIAD - HLN
1 stop21h 55mAlaska Airlines
Deal found 7/24$493
This Alaska Airlines deal was found by Cheapflights users on 7/23. 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.
Tue 9/33:44 pmHLN - IAD
1 stop21h 32mAlaska Airlines
Sat 9/77:09 pmIAD - HLN
1 stop30h 45mAlaska Airlines
Deal found 7/23$503
This Alaska Airlines deal was found by Cheapflights users on 7/25. 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.
Mon 9/233:44 pmHLN - IAD
1 stop30h 15mAlaska Airlines
Fri 9/277:09 pmIAD - HLN
1 stop21h 55mAlaska Airlines
Deal found 7/25$504
This Delta deal was found by Cheapflights users on 7/24. 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.
Wed 10/231:04 pmHLN - IAD
2 stops14h 52mDelta
Mon 10/287:05 amIAD - HLN
1 stop7h 27mDelta
Deal found 7/24$506
This Delta deal was found by Cheapflights users on 7/24. 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.
Wed 10/231:04 pmHLN - IAD
1 stop8h 38mDelta
Mon 10/287:05 amIAD - HLN
1 stop7h 27mDelta
Deal found 7/24$508
This Alaska Airlines deal was found by Cheapflights users on 7/25. 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.
Mon 9/93:44 pmHLN - IAD
2 stops22h 49mAlaska Airlines
Thu 9/125:38 pmIAD - HLN
2 stops32h 16mAlaska Airlines
Deal found 7/25$509

One-way flights to Dulles Intl from Helena

Search for one-way flight options from Helena to Dulles Intl. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,752,877 searches. Data last updated July 25, 2024.
Users traveling one-way from Helena to Washington, D.C. can select one of these great deals. For those needing a return trip from Helena, there is a search form available above.
This Delta deal was found by Cheapflights users on 7/24. 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.
Wed 10/21:10 pmHLN - IAD
2 stops14h 51mDelta
Deal found 7/24$217
This Delta deal was found by Cheapflights users on 7/24. 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.
Tue 8/271:11 pmHLN - IAD
1 stop8h 39mDelta
Deal found 7/24$219
This Delta deal was found by Cheapflights users on 7/24. 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.
Wed 8/281:11 pmHLN - IAD
2 stops14h 45mDelta
Deal found 7/24$227
This Delta deal was found by Cheapflights users on 7/24. 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.
Tue 8/271:11 pmHLN - IAD
2 stops14h 45mDelta
Deal found 7/24$248
This United deal was found by Cheapflights users on 7/25. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/26:45 amHLN - IAD
3 stops12h 13mUnited Airlines
Deal found 7/25$603

Find flights from Helena to Dulles Intl within your budget

Customize your flight search to find flights from Helena to Dulles Intl 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 2,752,877 searches. Data last updated July 25, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$488 - $581

Route

Depart

Return

Price

HelenaWashington, D.C. Dulles Intl

HLN - IAD

HLNIAD

Helena

Mon 9/9

2 stops22h 49m

Washington, D.C. Dulles Intl

Fri 9/13

1 stop21h 55m

$488

HelenaWashington, D.C. Dulles Intl

HLN - IAD

HLNIAD

Helena

Mon 9/9

1 stop21h 32m

Washington, D.C. Dulles Intl

Fri 9/13

1 stop21h 55m

$493

HelenaWashington, D.C. Dulles Intl

HLN - IAD

HLNIAD

Helena

Tue 9/3

1 stop21h 32m

Washington, D.C. Dulles Intl

Sat 9/7

1 stop30h 45m

$503

HelenaWashington, D.C. Dulles Intl

HLN - IAD

HLNIAD

Helena

Wed 10/23

2 stops14h 52m

Washington, D.C. Dulles Intl

Mon 10/28

1 stop7h 27m

$506

HelenaWashington, D.C. Dulles Intl

HLN - IAD

HLNIAD

Helena

Wed 10/23

1 stop8h 38m

Washington, D.C. Dulles Intl

Mon 10/28

1 stop7h 27m

$508

HelenaWashington, D.C. Dulles Intl

HLN - IAD

HLNIAD

Helena

Wed 10/23

2 stops14h 52m

Washington, D.C. Dulles Intl

Mon 10/28

2 stops12h 32m

$511

HelenaWashington, D.C. Dulles Intl

HLN - IAD

HLNIAD

Helena

Thu 8/22

1 stop14h 55m

Washington, D.C. Dulles Intl

Mon 8/26

2 stops32h 16m

$530

HelenaWashington, D.C. Dulles Intl

HLN - IAD

HLNIAD

Helena

Thu 11/28

1 stop26h 34m

Washington, D.C. Dulles Intl

Mon 12/2

1 stop17h 46m

$566

HelenaWashington, D.C. Dulles Intl

HLN - IAD

HLNIAD

Helena

Thu 11/28

1 stop11h 14m

Washington, D.C. Dulles Intl

Mon 12/2

1 stop17h 46m

$581

Flights are sorted by cheapest first

Deals found on 7/25

What is the cheapest day to fly from Helena to Washington, D.C. Dulles Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from Helena to Dulles Intl. Price data was last updated on July 21, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Helena to Washington, D.C. Dulles Intl Airport flight should consider departing on Tuesday mornings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Best time to book a flight from Helena to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl 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.

Temperature and rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature and rainfall totals by month.

WAS

Temperature

35.6 - 80.6 °F

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, 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 Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. 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 Dulles Intl. Reviews last updated July 25, 2024.
Read through reviews of airlines operating flights from Helena to Washington, D.C., such as Delta, Alaska Airlines and United Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.1
Very good
9,365 reviews

Overall

8.1

Entertainment

7.2

Comfort

7.9

Food

7.2

Boarding

8.2

Crew

8.6

Reviews

1 / 10

A/C was not working on the ground so it was 110 degrees on the plane when we boarded and we sat there for almost 40 minutes because Austin’s gate system has not kept up with growth. Not Alaska’s fault 100% but it was miserable.

Alaska Airlines
8.1
Very good
9,365 reviews
Alaska Airlines
8.1
Very good
9,365 reviews

Overall

8.1

Entertainment

7.2

Comfort

7.9

Food

7.2

Boarding

8.2

Crew

8.6

Reviews

1 / 10

A/C was not working on the ground so it was 110 degrees on the plane when we boarded and we sat there for almost 40 minutes because Austin’s gate system has not kept up with growth. Not Alaska’s fault 100% but it was miserable.

Delta
8.0
Very good
9,630 reviews
Alaska Airlines
8.1
Very good
9,365 reviews

Overall

8.1

Entertainment

7.2

Comfort

7.9

Food

7.2

Boarding

8.2

Crew

8.6

Reviews

1 / 10

A/C was not working on the ground so it was 110 degrees on the plane when we boarded and we sat there for almost 40 minutes because Austin’s gate system has not kept up with growth. Not Alaska’s fault 100% but it was miserable.

United Airlines
7.4
Good
10,000 reviews
Alaska Airlines
8.1
Very good
9,365 reviews

Overall

8.1

Entertainment

7.2

Comfort

7.9

Food

7.2

Boarding

8.2

Crew

8.6

Reviews

1 / 10

A/C was not working on the ground so it was 110 degrees on the plane when we boarded and we sat there for almost 40 minutes because Austin’s gate system has not kept up with growth. Not Alaska’s fault 100% but it was miserable.

Related info for your journey

Find useful and relevant information for your journey from Helena to Dulles Intl. 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. Dulles Intl?

    Most people fly from Helena (HLN) if they book a flight from Helena to Washington, D.C. Dulles Intl. On average, Helena has 0 outbound flights to Washington, D.C. Dulles Intl per day from 1 airline. Helena is conveniently located just 2.7 mi from Helena’s city center.

  • Can I find flights from Helena to Washington, D.C. Dulles Intl Airport for under $500 on Cheapflights?

    Yes, there are multiple flights from Helena to Washington, D.C. Dulles Intl Airport for under $500. The cheapest flight booked recently is on Alaska Airlines for just $488, but on average you can expect to pay $553.

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

    Our cheapest airline available from Helena to Washington, D.C. Dulles Intl Airport is Alaska Airlines. Our recent data shows that you can find tickets from as low as $488 on this airline. Additional options worth looking into are Delta and United Airlines, starting at $506 and $566 round-trip.

  • What does HLN to IAD mean?

    Great question - HLN to IAD just means Helena Airport to Washington, D.C. Dulles Intl Airport. Now you’ll know what these unique codes when you look for flights!

  • Can I find deals for flights from Helena to Dulles Intl that include extra baggage allowance?

    The amount of baggage you can bring on your Helena to Dulles Intl flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Helena to Dulles Intl with specific airlines?

    Yes, Cheapflights allows you to browse and filter Helena to Dulles Intl flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from Helena to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on Helena to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Helena to Dulles Intl?

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

  • Can I find deals for business class flights from Helena to Dulles Intl?

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

  • Can I find deals for flights from Helena to Dulles Intl that allow pets onboard?

    Many airlines flying from Helena to Dulles Intl offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Helena to Dulles Intl?

    Yes, you can often find last-minute deals on Helena to Dulles Intl flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Helena to Washington, D.C. Dulles Intl Airport flight deals updated?

    The Helena to Washington, D.C. Dulles Intl Airport flight deals you see on this page were last updated on 7/25.

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

    Currently, September is the cheapest month in which you can book a flight from Helena to Washington, D.C. Dulles Intl Airport (average of $278). Flying from Helena to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $378). 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

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See prices for flight routes from nearby airports that may be better suited for you.

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Top airline flying from Helena to Dulles Intl

Discover the top airline that operate flights from Helena to Dulles Intl. 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 2,752,877 searches. Data last updated July 25, 2024.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$558Average$755FlexibilityNo cancel feeOn-time69%
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Search flights from Helena to Dulles Intl by cabin class

Find flights from Helena to Dulles Intl, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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