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Cheap flights from Washington to Helena from $99

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to Helena departing on 3/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Washington to Helena

Cheap round-trip flights

Enter your travel dates to find the best prices.
Alaska Airlines Logo
1:21 pm - 3:59 pm
SEA
-
HLN
1h 38mnonstop
Alaska Airlines Logo
4:36 pm - 5:26 pm
HLN
-
SEA
1h 50mnonstop
$137Alaska Airlines
Sat, Mar 7 - Sat, Mar 14
Alaska Airlines Logo
1:30 pm - 4:06 pm
SEA
-
HLN
1h 36mnonstop
Alaska Airlines Logo
4:43 pm - 5:33 pm
HLN
-
SEA
1h 50mnonstop
$187Alaska Airlines
Sat, May 16 - Fri, May 22
Delta Logo
6:00 am - 12:20 pm
PDX
-
HLN
5h 20m
1 stop
Delta Logo
5:45 am - 8:55 am
HLN
-
PDX
4h 10m
1 stop
$187Delta
Sat, May 9 - Wed, May 13
Delta Logo
5:45 am - 12:21 pm
PDX
-
HLN
5h 36m
1 stop
Delta Logo
5:30 am - 9:04 am
HLN
-
PDX
4h 34m
1 stop
$197Delta
Tue, Mar 10 - Tue, Mar 17
Alaska Airlines Logo
8:25 am - 3:59 pm
PSC
-
HLN
6h 34m
1 stop
Alaska Airlines Logo
4:36 pm - 8:55 pm
HLN
-
PSC
5h 19m
1 stop
$197Alaska Airlines
Sat, Feb 28 - Wed, Mar 4
Alaska Airlines Logo
8:25 am - 3:59 pm
PSC
-
HLN
6h 34m
1 stop
Alaska Airlines Logo
4:36 pm - 8:55 pm
HLN
-
PSC
5h 19m
1 stop
$207Alaska Airlines
Sat, Feb 28 - Wed, Mar 4
Alaska Airlines Logo
1:30 pm - 4:06 pm
SEA
-
HLN
1h 36mnonstop
Alaska Airlines Logo
4:43 pm - 5:33 pm
HLN
-
SEA
1h 50mnonstop
$217Alaska Airlines
Sat, May 16 - Thu, May 21
Alaska Airlines Logo
1:30 pm - 4:06 pm
SEA
-
HLN
1h 36mnonstop
Alaska Airlines Logo
4:43 pm - 5:33 pm
HLN
-
SEA
1h 50mnonstop
$227Alaska Airlines
Tue, May 19 - Fri, May 22
Alaska Airlines Logo
6:00 am - 5:45 pm
PDX
-
HLN
10h 45m
1 stop
Alaska Airlines Logo
4:43 pm - 9:34 pm
HLN
-
PDX
5h 51m
1 stop
$237Alaska Airlines
Sat, May 9 - Wed, May 13
Alaska Airlines Logo
1:47 pm - 4:22 pm
SEA
-
HLN
1h 35mnonstop
Alaska Airlines Logo
4:59 pm - 5:51 pm
HLN
-
SEA
1h 52mnonstop
$237Alaska Airlines
Tue, Jul 21 - Tue, Jul 28

Delta flights from State of Washington to Helena

Our best Delta deals on State of Washington to Helena flight tickets
Delta
Mar 10
PDX5:45 amPortland
5h 36m
1 stop
HLN12:21 pmHelena
Mar 21
HLN5:30 amHelena
4h 26m
1 stop
PDX8:56 amPortland
$197
Delta
Mar 9
PDX5:45 amPortland
5h 36m
1 stop
HLN12:21 pmHelena
Mar 17
HLN5:30 amHelena
4h 34m
1 stop
PDX9:04 amPortland
$239
Delta
Mar 10
PDX7:43 pmPortland
15h 38m
2 stops
HLN12:21 pmHelena
Mar 21
HLN5:30 amHelena
4h 26m
1 stop
PDX8:56 amPortland
$240

United Airlines flights from State of Washington to Helena

Our best United Airlines deals on State of Washington to Helena flight tickets
United Airlines
Mar 7
SEA5:00 amSeattle/Tacoma Intl
7h 38m
1 stop
HLN1:38 pmHelena
Mar 14
HLN2:30 pmHelena
7h 44m
1 stop
SEA9:14 pmSeattle/Tacoma Intl
$412
United Airlines
Feb 10
SEA5:00 amSeattle/Tacoma Intl
7h 41m
1 stop
HLN1:41 pmHelena
Feb 14
HLN2:25 pmHelena
7h 47m
1 stop
SEA9:12 pmSeattle/Tacoma Intl
$612
United Airlines
Feb 18
SEA5:00 amSeattle/Tacoma Intl
7h 40m
1 stop
HLN1:40 pmHelena
Feb 21
HLN2:25 pmHelena
20h 24m
1 stop
SEA9:49 amSeattle/Tacoma Intl
$616

momondo Fare Finder

 
Customize your flight search to find flights from State of Washington to Helena 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, momondo users made 832,500 searches. Data last updated February 8, 2026.
Use the filters below to find and compare flights from Washington to Helena that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleHelena

SEA - HLN

SEAHLN

Seattle/Tacoma Intl

Sat 3/7

1:21 pm-3:59 pm

Nonstop1h 38m

Helena

Sat 3/14

4:36 pm-5:26 pm

Nonstop1h 50m

$137

SeattleHelena

SEA - HLN

SEAHLN

Seattle/Tacoma Intl

Sat 5/16

1:30 pm-4:06 pm

Nonstop1h 36m

Helena

Fri 5/22

4:43 pm-5:33 pm

Nonstop1h 50m

$187

PortlandHelena

PDX - HLN

PDXHLN

Portland

Sat 5/9

6:00 am-12:20 pm

1 stop5h 20m

Helena

Wed 5/13

5:45 am-8:55 am

1 stop4h 10m

$187

PortlandHelena

PDX - HLN

PDXHLN

Portland

Tue 3/10

5:45 am-12:21 pm

1 stop5h 36m

Helena

Tue 3/17

5:30 am-9:04 am

1 stop4h 34m

$197

PascoHelena

PSC - HLN

PSCHLN

Pasco Tri Cities

Sat 2/28

8:25 am-3:59 pm

1 stop6h 34m

Helena

Wed 3/4

4:36 pm-8:55 pm

1 stop5h 19m

$197

PascoHelena

PSC - HLN

PSCHLN

Pasco Tri Cities

Sat 2/28

8:25 am-3:59 pm

1 stop6h 34m

Helena

Wed 3/4

4:36 pm-8:55 pm

1 stop5h 19m

$207

SeattleHelena

SEA - HLN

SEAHLN

Seattle/Tacoma Intl

Sat 5/16

1:30 pm-4:06 pm

Nonstop1h 36m

Helena

Thu 5/21

4:43 pm-5:33 pm

Nonstop1h 50m

$217

SeattleHelena

SEA - HLN

SEAHLN

Seattle/Tacoma Intl

Tue 5/19

1:30 pm-4:06 pm

Nonstop1h 36m

Helena

Fri 5/22

4:43 pm-5:33 pm

Nonstop1h 50m

$227

PortlandHelena

PDX - HLN

PDXHLN

Portland

Sat 5/9

6:00 am-5:45 pm

1 stop10h 45m

Helena

Wed 5/13

4:43 pm-9:34 pm

1 stop5h 51m

$237

SeattleHelena

SEA - HLN

SEAHLN

Seattle/Tacoma Intl

Tue 7/21

1:47 pm-4:22 pm

Nonstop1h 35m

Helena

Tue 7/28

4:59 pm-5:51 pm

Nonstop1h 52m

$237

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Helena from

How to get the cheapest flight ticket from State of Washington to Helena

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 month to fly to Helena?

If you aren’t able to travel to Helena during the month of January, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $187.

What is the cheapest day to depart on your flight to Helena?

The cheapest day to depart from State of Washington to Helena is on a Saturday. Travelers who choose to depart for Helena on a Saturday will often find tickets for as low as $197. The most expensive day to fly to Helena is Tuesday, with ticket prices averaging around $308.

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

According to our data, the cheapest time of day to fly to Helena is in the afternoon. momondo users have found flights departing from State of Washington to Helena in the afternoon for as low as $217. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Helena is at noon when prices are around $368.

What is the cheapest Washington to Helena flight route?

Fly from Seattle/Tacoma Intl to Helena for the best Washington - Helena flight prices

What cabin class options are available on Washington to Helena flights?

There are 4 cabin classes available to choose from on Washington to Helena flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on State of Washington to Helena flights?

You could potentially save up to 54% on your flight if you consider stops on a State of Washington to Helena flight.

Cheap State of Washington to Helena flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to Helena

Best Price Found

$131

Fastest flight time

1h 36m

Direct flights

Mon, Wed, Thu, Fri, Sat and Sun

Airports in Helena

1 airport
The best flight deal from State of Washington to Helena found on momondo in the last 72 hours is $131
The fastest flight from State of Washington to Helena takes 1h 36m
Direct flights go from State of Washington to Helena on Monday, Wednesday, Thursday, Friday, Saturday and Sunday. There are no airlines offering direct flights.
There is 1 airport in Helena. From State of Washington there are direct flights to Helena (HLN).
Search flight deals

  • When did momondo last update prices for flights from Washington to Helena Airport?

    Prices for flights from Washington to Helena Airport were last updated today.

  • How many operators does momondo search for flights from Washington to Helena Airport?

  • How old do you have to be to fly from Washington to Helena Airport?

    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 Washington to Helena Airport.

  • What documentation or ID do you need to fly to Helena Airport?

    The necessary travel and health documents for your Helena Airport 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.

  • What is the most popular plane model from State of Washington to Helena?

Best airlines flying from State of Washington to Helena

Compare and see reviews for airlines that fly from State of Washington to Helena with momondo
Airline
Rating
Free Cancellation
Price
Alaska AirlinesPriceFrom $131Free CancellationRating
8.0
11,863 reviews
Search Alaska Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Washington to Helena?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Washington to Helena. momondo saves you time and could save you money on your trip.

Can I find flights from Washington to Helena with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Helena from Washington with this policy.

How can momondo help me find flights from Washington to Helena?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Helena from Washington.

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

If you are not ready to book a flight from Washington to Helena now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Helena and let you know when they change.

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