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IAD - HLN

$209 Find Cheap Flights from Washington Dulles Airport to Helena

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to Helena departing on 12/17. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags

Search hundreds of travel sites at once for deals on flights to Helena

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Helena, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Helena, as well as popular online travel agencies
In the last 7 days travelers have searched 46,479,581 times on KAYAK, and here is why:

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Cheap Flight Deals from Washington Dulles Airport to Helena (IAD-HLN)

 
These are the cheapest deals for flights from Dulles Intl to Helena currently on KAYAK along with options from the most popular airlines KAYAK users selected for this route. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals from Dulles Intl to Helena

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Dulles Intl to Helena.

Recent one-way flight deals from Dulles Intl to Helena

Only flying one-way? Below are some of the best one-way flight deals from Dulles Intl to Helena found on KAYAK recently.

Recent last minute flight deals from Dulles Intl to Helena

Leaving soon but still want a bargain? Check out these latest deals for last minute flights from Dulles Intl to Helena.

Recent direct flight deals from Dulles Intl to Helena

The latest deals for direct flights from Dulles Intl to Helena so you can sit back and relax without the need for a layover.

Cheap bus & train deals from Dulles Intl to Helena

Find recent round-trip train or bus tickets from Dulles Intl to Helena.

All round-trip flight deals to Helena

The cheapest plane tickets to Helena found on KAYAK recently.
Discover the best prices and deals for you by selecting your travel dates.
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6:55 am - 12:19 pmIAD-HLN
7h 24m1 stop
1:25 pm - 9:40 pmHLN-IAD
30h 15m2 stops
$515Delta
Find Deal
Sun, Dec 15 - Mon, Dec 30
6:55 am - 12:19 pmIAD-HLN
7h 24m1 stop
1:25 pm - 9:40 pmHLN-IAD
30h 15m2 stops
$582Delta
Find Deal
Tue, Dec 17 - Mon, Dec 30
3:54 pm - 3:29 pmIAD-HLN
25h 35m1 stop
3:29 pm - 5:40 amHLN-IAD
12h 11m1 stop
$588Alaska Airlines
Find Deal
Mon, Dec 16 - Tue, Dec 31
5:35 pm - 1:57 pmIAD-HLN
22h 22m1 stop
6:40 am - 11:23 amHLN-IAD
26h 43m1 stop
$591United Airlines
Find Deal
Mon, Dec 16 - Wed, Jan 1
5:35 pm - 1:57 pmIAD-HLN
22h 22m1 stop
6:25 am - 11:59 pmHLN-IAD
15h 34m2 stops
$596United Airlines
Find Deal
Mon, Dec 16 - Tue, Dec 31
1:05 pm - 9:13 pmIAD-HLN
10h 08m2 stops
6:40 am - 11:23 amHLN-IAD
26h 43m1 stop
$598United Airlines
Find Deal
Tue, Dec 17 - Wed, Jan 1
10:11 pm - 9:13 pmIAD-HLN
25h 02m1 stop
6:25 am - 5:08 amHLN-IAD
20h 43m1 stop
$601United Airlines
Find Deal
Sun, Dec 15 - Tue, Dec 31
7:00 am - 3:29 pmIAD-HLN
10h 29m1 stop
3:29 pm - 5:57 pmHLN-IAD
24h 28m1 stop
$636Alaska Airlines
Find Deal
Sun, Dec 15 - Sun, Jan 5
7:09 pm - 11:00 pmIAD-HLN
29h 51m2 stops
1:25 pm - 9:40 pmHLN-IAD
30h 15m2 stops
$649Delta
Find Deal
Mon, Dec 16 - Mon, Dec 30
7:00 am - 3:29 pmIAD-HLN
10h 29m1 stop
3:29 pm - 5:40 amHLN-IAD
12h 11m1 stop
$671Alaska Airlines
Find Deal
Wed, Dec 18 - Mon, Dec 30
6:55 am - 12:19 pmIAD-HLN
7h 24m1 stop
$209Delta
Find Deal
Tue, Dec 17
6:57 pm - 4:04 pmIAD-HLN
23h 07m1 stop
$232Alaska Airlines
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Fri, Jan 24
6:30 am - 1:45 pmIAD-HLN
9h 15m1 stop
$237United Airlines
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Thu, Jan 2
8:25 am - 1:45 pmIAD-HLN
7h 20m1 stop
$264United Airlines
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Thu, Jan 2
8:25 am - 9:36 pmIAD-HLN
15h 11m2 stops
$269United Airlines
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Fri, Jan 24
9:13 am - 3:29 pmIAD-HLN
32h 16m2 stops
$293Alaska Airlines
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Tue, Dec 17
7:00 am - 2:49 pmIAD-HLN
9h 49m1 stop
$304Alaska Airlines
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Thu, Jan 2
12:45 pm - 11:00 pmIAD-HLN
12h 15m2 stops
$314Delta
Find Deal
Tue, Dec 17
12:59 pm - 10:52 pmIAD-HLN
11h 53m2 stops
$354Delta
Find Deal
Thu, Jan 2
5:37 pm - 1:45 pmIAD-HLN
22h 08m2 stops
$397United Airlines
Find Deal
Thu, Jan 2
8:25 am - 1:57 pmIAD-HLN
7h 32m1 stop
2:32 pm - 11:18 pmHLN-IAD
6h 46m1 stop
$1,029United Airlines
Find Deal
Fri, Nov 1 - Thu, Nov 7
4:00 pm - 9:17 pmIAD-HLN
7h 17m1 stop
2:32 pm - 11:18 pmHLN-IAD
6h 46m1 stop
$1,108United Airlines
Find Deal
Fri, Nov 1 - Wed, Nov 6
4:00 pm - 9:17 pmIAD-HLN
7h 17m1 stop
6:30 am - 3:43 pmHLN-IAD
7h 13m1 stop
$1,127United Airlines
Find Deal
Fri, Nov 1 - Tue, Nov 5
8:25 am - 1:57 pmIAD-HLN
7h 32m1 stop
2:32 pm - 11:18 pmHLN-IAD
6h 46m1 stop
$1,162United Airlines
Find Deal
Fri, Nov 1 - Wed, Nov 6

Flights from Dulles Intl to Helena - Travel Insights & Trends

Get data-powered insights and trends into flights from Dulles Intl to Helena to help you find the cheapest flights, the best time to fly and much more.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Washington, D.C. Dulles Intl Airport to Helena, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Washington, D.C. Dulles Intl Airport to Helena is April, where tickets cost $482 on average. On the other hand, the most expensive months are July and August, where the average cost of tickets is $1,026 and $979 respectively.

Good to know

Cheapest flight

$209
Flight from Washington Dulles Airport to Helena

When to book flights from Dulles Intl to Helena

Are your dates flexible? Find out the best times to travel from Dulles Intl to Helena based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Washington Dulles Airport to Helena flights

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

    In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Helena was $209 for a one-way ticket and $515 for a round-trip.

  • Do I need a passport to fly between Washington Dulles Airport and Helena?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airports will I be using when flying from Washington Dulles Airport to Helena?

    Washington Dulles Airport and Helena are both served by 1 main airport. You will leave Washington Dulles Airport from Washington, D.C. Dulles Intl and will be arriving at Helena.

  • Which aircraft models fly most regularly from Washington Dulles Airport to Helena?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Washington Dulles Airport to Helena?

    SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between Washington Dulles Airport and Helena, with SkyTeam being the most commonly used for this route.

  • How does KAYAK find such low prices on flights from Washington Dulles Airport to Helena?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington Dulles Airport to Helena.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington Dulles Airport to Helena?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Helena from Washington Dulles Airport is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington Dulles Airport to Helena?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Helena with an airline and back to Washington Dulles Airport with another airline. Booking your flights between Washington Dulles Airport and HLN can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington Dulles Airport to Helena?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Helena from Washington Dulles Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top airline flying from Dulles Intl to Helena

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Helena. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Dulles Intl to Helena? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9240 reviews
7.7Boarding
8.1Crew
7.3Comfort
7.1Entertainment
6.7Food
Airline reviews

The plane was clean. The staff was excellent. The flight attendants were very good. Enjoyable flight. Overall. The seats in the back are too small but, will always be.

8.0 ExcellentJason, Oct 2024IAD - DEN
Read more United Airlines reviews

The plane was clean. The staff was excellent. The flight attendants were very good. Enjoyable flight. Overall. The seats in the back are too small but, will always be.

This was a 5 hour flight with no entertainment and with a snack being provided (pretzels and fruit bar), which are both high in carbs and sugar. Nuts would have been a better choice.

Never nice, United Express partners always do an amazing job.

Everything was perfect except the pad at the top of the seat back. It pushes my head forward in a very uncomfortable position and it is not removable.

Good plane, crew, and flight. Boarding was a bit chaotic. Bathrooms were unacceptable. United DESPERATELY needs a new terminal at IAD.

United Airlines changed my flight 5 hours before I arrived at the airport. This messed up my entire day that I arrived in Japan.

Being stick waiting for gate at ORD cause me to almost miss my connecting flight…being deaf United made no no effort to keep me updated as I couldn’t hear the PA

The Economy Plus rows weren’t as roomy as expected, and the meal service left a lot to be desired for.

United ground crew and pilots are friendly. The in-flight staff (flight attendants) are the worst in the world. Multiple trips, always unpleasant, combative, use implicit threats to not allow for a discussion on their decision. Authoritarian. This seems to stem from an internal corporate wide policy as I doubt that United is intentionally searching for people that are not fit for customer facing positions. I will not fly United again. Good luck fixing your business

The flight was mostly on time, smooth and deplaning was quick. Baggage was really quick at the claim. Comfort was so-so and I paid for economy plus. It was still too crowded and why was a family of 5 scattered all around the plane?

Book cheap flights from Washington, D.C. to Helena

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Washington, D.C. to Helena found on KAYAK in the last 72 hours.
12/17Tue
1 stopDelta
7h 24mIAD-HLN
$209
1/24Fri
1 stopAlaska Airlines
23h 07mIAD-HLN
$232
1/2Thu
1 stopUnited Airlines
9h 15mIAD-HLN
$237
1/2Thu
1 stopUnited Airlines
7h 20mIAD-HLN
$264
1/24Fri
2 stopsUnited Airlines
15h 11mIAD-HLN
$269
12/17Tue
2 stopsAlaska Airlines
32h 16mIAD-HLN
$293
1/2Thu
1 stopAlaska Airlines
9h 49mIAD-HLN
$304
12/17Tue
2 stopsDelta
12h 15mIAD-HLN
$314
1/2Thu
2 stopsDelta
11h 53mIAD-HLN
$354
1/2Thu
2 stopsUnited Airlines
22h 08mIAD-HLN
$397

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Last minute flights from Dulles Intl to Helena

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Washington, D.C. to Helena that are departing in the next 10 days.
11/1Fri
multi-stopUnited Airlines
7h 32mIAD-HLN
11/7Thu
multi-stopUnited Airlines
6h 46mHLN-IAD
$1,029
11/1Fri
multi-stopUnited Airlines
7h 17mIAD-HLN
11/6Wed
multi-stopUnited Airlines
6h 46mHLN-IAD
$1,108
11/1Fri
multi-stopUnited Airlines
7h 17mIAD-HLN
11/5Tue
multi-stopUnited Airlines
7h 13mHLN-IAD
$1,127
11/1Fri
multi-stopUnited Airlines
7h 32mIAD-HLN
11/6Wed
multi-stopUnited Airlines
6h 46mHLN-IAD
$1,162

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Everything you need to know for your flight from Dulles Intl to Helena

Information on your arrival and departure airports