Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from Washington to Helena from $139

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 4/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Washington to Helena

Cheap round-trip flights

Enter your travel dates to find the best prices.
Alaska Airlines Logo
3:07 pm - 5:45 pm
SEA
-
HLN
1h 38mnonstop
Alaska Airlines Logo
6:22 pm - 7:09 pm
HLN
-
SEA
1h 47mnonstop
$177Alaska Airlines
Wed, Apr 22 - Wed, Apr 29
Alaska Airlines Logo
3:07 pm - 5:45 pm
SEA
-
HLN
1h 38mnonstop
Alaska Airlines Logo
6:22 pm - 7:09 pm
HLN
-
SEA
1h 47mnonstop
$207Alaska Airlines
Sat, Apr 25 - Tue, Apr 28
Alaska Airlines Logo
3:07 pm - 5:45 pm
SEA
-
HLN
1h 38mnonstop
Alaska Airlines Logo
6:22 pm - 7:09 pm
HLN
-
SEA
1h 47mnonstop
$217Alaska Airlines
Tue, May 5 - Thu, May 7
Alaska Airlines Logo
3:07 pm - 5:45 pm
SEA
-
HLN
1h 38mnonstop
Alaska Airlines Logo
6:22 pm - 7:09 pm
HLN
-
SEA
1h 47mnonstop
$292Alaska Airlines
Wed, May 6 - Thu, May 7
Delta Logo
6:00 am - 12:24 pm
PSC
-
HLN
5h 24m
1 stop
Delta Logo
1:04 pm - 5:09 pm
HLN
-
PSC
5h 05m
1 stop
$297Delta
Sat, Apr 25 - Wed, Apr 29
Alaska Airlines Logo
2:14 pm - 4:49 pm
SEA
-
HLN
1h 35mnonstop
Alaska Airlines Logo
5:26 pm - 6:16 pm
HLN
-
SEA
1h 50mnonstop
$297Alaska Airlines
Tue, Jul 21 - Mon, Jul 27
Alaska Airlines Logo
3:09 pm - 5:45 pm
SEA
-
HLN
1h 36mnonstop
Alaska Airlines Logo
6:22 pm - 7:11 pm
HLN
-
SEA
1h 49mnonstop
$307Alaska Airlines
Sat, Apr 11 - Fri, Apr 17
United Airlines Logo
5:00 am - 1:39 pm
SEA
-
HLN
7h 39m
1 stop
United Airlines Logo
2:25 pm - 11:27 pm
HLN
-
SEA
10h 02m
2 stops
$312United Airlines
Sat, Apr 25 - Tue, Apr 28
Delta Logo
5:35 am - 12:24 pm
SEA
-
HLN
5h 49m
1 stop
Delta Logo
5:40 am - 9:15 am
HLN
-
SEA
4h 35m
1 stop
$317Delta
Sat, Apr 18 - Wed, Apr 22
Delta Logo
5:35 am - 12:24 pm
SEA
-
HLN
5h 49m
1 stop
Delta Logo
1:04 pm - 4:48 pm
HLN
-
SEA
4h 44m
1 stop
$337Delta
Wed, Apr 22 - Wed, Apr 29

Alaska Airlines flights from State of Washington to Helena

Our best Alaska Airlines deals on State of Washington to Helena flight tickets
Alaska Airlines
Apr 22
SEA3:07 pmSeattle/Tacoma Intl
1h 38m
HLN5:45 pmHelena
Apr 29
HLN6:22 pmHelena
1h 47m
SEA7:09 pmSeattle/Tacoma Intl
$177
Alaska Airlines
Apr 25
SEA3:07 pmSeattle/Tacoma Intl
1h 38m
HLN5:45 pmHelena
Apr 28
HLN6:22 pmHelena
1h 47m
SEA7:09 pmSeattle/Tacoma Intl
$207
Alaska Airlines
May 5
SEA3:07 pmSeattle/Tacoma Intl
1h 38m
HLN5:45 pmHelena
May 7
HLN6:22 pmHelena
1h 47m
SEA7:09 pmSeattle/Tacoma Intl
$217

Delta flights from State of Washington to Helena

Our best Delta deals on State of Washington to Helena flight tickets
Delta
Apr 25
PSC6:00 amPasco Tri Cities
5h 24m
1 stop
HLN12:24 pmHelena
Apr 29
HLN1:04 pmHelena
5h 05m
1 stop
PSC5:09 pmPasco Tri Cities
$297
Delta
Apr 18
SEA5:35 amSeattle/Tacoma Intl
5h 49m
1 stop
HLN12:24 pmHelena
Apr 22
HLN5:40 amHelena
4h 35m
1 stop
SEA9:15 amSeattle/Tacoma Intl
$317
Delta
Apr 22
SEA5:35 amSeattle/Tacoma Intl
5h 49m
1 stop
HLN12:24 pmHelena
Apr 29
HLN1:04 pmHelena
4h 44m
1 stop
SEA4:48 pmSeattle/Tacoma Intl
$337

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 March 28, 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

Cheapest round-trip
Quickest round-trip

SeattleHelena

SEA - HLN

SEAHLN

Seattle/Tacoma Intl

Wed 4/22

3:07 pm-5:45 pm

Nonstop1h 38m

Helena

Wed 4/29

6:22 pm-7:09 pm

Nonstop1h 47m

$177

SeattleHelena

SEA - HLN

SEAHLN

Seattle/Tacoma Intl

Sat 4/25

3:07 pm-5:45 pm

Nonstop1h 38m

Helena

Tue 4/28

6:22 pm-7:09 pm

Nonstop1h 47m

$207

SeattleHelena

SEA - HLN

SEAHLN

Seattle/Tacoma Intl

Tue 5/5

3:07 pm-5:45 pm

Nonstop1h 38m

Helena

Thu 5/7

6:22 pm-7:09 pm

Nonstop1h 47m

$217

SeattleHelena

SEA - HLN

SEAHLN

Seattle/Tacoma Intl

Wed 5/6

3:07 pm-5:45 pm

Nonstop1h 38m

Helena

Thu 5/7

6:22 pm-7:09 pm

Nonstop1h 47m

$292

PascoHelena

PSC - HLN

PSCHLN

Pasco Tri Cities

Sat 4/25

6:00 am-12:24 pm

1 stop5h 24m

Helena

Wed 4/29

1:04 pm-5:09 pm

1 stop5h 05m

$297

SeattleHelena

SEA - HLN

SEAHLN

Seattle/Tacoma Intl

Tue 7/21

2:14 pm-4:49 pm

Nonstop1h 35m

Helena

Mon 7/27

5:26 pm-6:16 pm

Nonstop1h 50m

$297

SeattleHelena

SEA - HLN

SEAHLN

Seattle/Tacoma Intl

Sat 4/11

3:09 pm-5:45 pm

Nonstop1h 36m

Helena

Fri 4/17

6:22 pm-7:11 pm

Nonstop1h 49m

$307

SeattleHelena

SEA - HLN

SEAHLN

Seattle/Tacoma Intl

Sat 4/25

5:00 am-1:39 pm

1 stop7h 39m

Helena

Tue 4/28

2:25 pm-11:27 pm

2 stops10h 02m

$312

SeattleHelena

SEA - HLN

SEAHLN

Seattle/Tacoma Intl

Sat 4/18

5:35 am-12:24 pm

1 stop5h 49m

Helena

Wed 4/22

5:40 am-9:15 am

1 stop4h 35m

$317

SeattleHelena

SEA - HLN

SEAHLN

Seattle/Tacoma Intl

Wed 4/22

5:35 am-12:24 pm

1 stop5h 49m

Helena

Wed 4/29

1:04 pm-4:48 pm

1 stop4h 44m

$337

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 day to depart on your flight to Helena?

The cheapest day to depart from State of Washington to Helena is on a Tuesday. Travelers who choose to depart for Helena on a Tuesday will often find tickets for as low as $187. The most expensive day to fly to Helena is Wednesday, with ticket prices averaging around $298.

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 $195. 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 15% 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

$137

Fastest flight time

4h 25m

Direct flights

Every day

Airports in Helena

1 airport
The best flight deal from State of Washington to Helena found on momondo in the last 72 hours is $137
The fastest flight from State of Washington to Helena takes 4h 25m
Direct flights go from State of Washington to Helena every day.
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 $137Free CancellationRating
7.9
12,134 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.

An easier way to manage your Helena trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Mon 4/27
Mon 5/4
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States