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Cheap flights from Helena to Washington from $129

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Helena to Washington departing on 8/19. 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

Find the cheapest flights from Helena to Washington

Cheap round-trip flights

Enter your travel dates to find the best prices.
Alaska Airlines Logo
5:32 pm - 6:28 pm
HLN
-
SEA
1h 56mnonstop
Alaska Airlines Logo
1:58 pm - 4:34 pm
SEA
-
HLN
1h 36mnonstop
$197Alaska Airlines
Sat, Aug 22 - Sat, Aug 29
Alaska Airlines Logo
5:18 pm - 6:14 pm
HLN
-
SEA
1h 56mnonstop
Alaska Airlines Logo
2:05 pm - 4:41 pm
SEA
-
HLN
1h 36mnonstop
$207Alaska Airlines
Thu, Sep 24 - Sat, Sep 26
Delta Logo
1:03 pm - 6:52 pm
HLN
-
SEA
6h 49m
1 stop
Delta Logo
5:35 am - 12:23 pm
SEA
-
HLN
5h 48m
1 stop
$237Delta
Fri, Oct 9 - Mon, Oct 12
Alaska Airlines Logo
5:18 pm - 6:14 pm
HLN
-
SEA
1h 56mnonstop
Alaska Airlines Logo
1:36 pm - 4:11 pm
SEA
-
HLN
1h 35mnonstop
$262Alaska Airlines
Thu, Oct 1 - Sat, Oct 3
Alaska Airlines Logo
4:48 pm - 5:41 pm
HLN
-
SEA
1h 53mnonstop
Alaska Airlines Logo
1:36 pm - 4:11 pm
SEA
-
HLN
1h 35mnonstop
$277Alaska Airlines
Fri, Oct 9 - Mon, Oct 12
Delta Logo
12:57 pm - 6:36 pm
HLN
-
SEA
6h 39m
1 stop
Delta Logo
5:45 am - 12:17 pm
SEA
-
HLN
5h 32m
1 stop
$283Delta
Thu, Sep 24 - Sat, Sep 26
Delta Logo
12:57 pm - 6:36 pm
HLN
-
SEA
6h 39m
1 stop
Delta Logo
5:45 am - 12:17 pm
SEA
-
HLN
5h 32m
1 stop
$288Delta
Thu, Sep 24 - Sat, Sep 26
Alaska Airlines Logo
5:09 pm - 6:01 pm
HLN
-
SEA
1h 52mnonstop
Alaska Airlines Logo
1:58 pm - 4:34 pm
SEA
-
HLN
1h 36mnonstop
$312Alaska Airlines
Mon, Aug 17 - Wed, Aug 19
Alaska Airlines Logo
5:34 pm - 6:30 pm
HLN
-
SEA
1h 56mnonstop
Alaska Airlines Logo
2:19 pm - 4:55 pm
SEA
-
HLN
1h 36mnonstop
$322Alaska Airlines
Thu, Aug 20 - Sun, Aug 23
Alaska Airlines Logo
5:09 pm - 6:01 pm
HLN
-
SEA
1h 52mnonstop
Alaska Airlines Logo
1:57 pm - 4:32 pm
SEA
-
HLN
1h 35mnonstop
$337Alaska Airlines
Fri, Jul 31 - Thu, Aug 6

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Delta flights from Helena to State of Washington

Our best Delta deals on Helena to State of Washington flight tickets
Delta
Oct 9
HLN1:03 pmHelena
6h 49m
1 stop
SEA6:52 pmSeattle/Tacoma Intl
Oct 12
SEA5:35 amSeattle/Tacoma Intl
5h 48m
1 stop
HLN12:23 pmHelena
$237
Delta
Sep 24
HLN12:57 pmHelena
6h 39m
1 stop
SEA6:36 pmSeattle/Tacoma Intl
Sep 26
SEA5:45 amSeattle/Tacoma Intl
5h 32m
1 stop
HLN12:17 pmHelena
$283
Delta
Sep 24
HLN12:57 pmHelena
6h 39m
1 stop
SEA6:36 pmSeattle/Tacoma Intl
Sep 26
SEA5:45 amSeattle/Tacoma Intl
5h 32m
1 stop
HLN12:17 pmHelena
$288

Alaska Airlines flights from Helena to State of Washington

Our best Alaska Airlines deals on Helena to State of Washington flight tickets
Alaska Airlines
Aug 22
HLN5:32 pmHelena
1h 56m
SEA6:28 pmSeattle/Tacoma Intl
Aug 29
SEA1:58 pmSeattle/Tacoma Intl
1h 36m
HLN4:34 pmHelena
$197
Alaska Airlines
Sep 24
HLN5:18 pmHelena
1h 56m
SEA6:14 pmSeattle/Tacoma Intl
Sep 26
SEA2:05 pmSeattle/Tacoma Intl
1h 36m
HLN4:41 pmHelena
$207
Alaska Airlines
Oct 1
HLN5:18 pmHelena
1h 56m
SEA6:14 pmSeattle/Tacoma Intl
Oct 3
SEA1:36 pmSeattle/Tacoma Intl
1h 35m
HLN4:11 pmHelena
$262

momondo Fare Finder

 
Customize your flight search to find flights from Helena to State of Washington 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 July 2, 2026.
Use the filters below to find and compare flights from Helena to Washington that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

HelenaSeattle

HLN - SEA

HLNSEA

Helena

Sat 8/22

5:32 pm-6:28 pm

Nonstop1h 56m

Seattle/Tacoma Intl

Sat 8/29

1:58 pm-4:34 pm

Nonstop1h 36m

$197

HelenaSeattle

HLN - SEA

HLNSEA

Helena

Thu 9/24

5:18 pm-6:14 pm

Nonstop1h 56m

Seattle/Tacoma Intl

Sat 9/26

2:05 pm-4:41 pm

Nonstop1h 36m

$207

HelenaSeattle

HLN - SEA

HLNSEA

Helena

Fri 10/9

1:03 pm-6:52 pm

1 stop6h 49m

Seattle/Tacoma Intl

Mon 10/12

5:35 am-12:23 pm

1 stop5h 48m

$237

HelenaSeattle

HLN - SEA

HLNSEA

Helena

Thu 10/1

5:18 pm-6:14 pm

Nonstop1h 56m

Seattle/Tacoma Intl

Sat 10/3

1:36 pm-4:11 pm

Nonstop1h 35m

$262

HelenaSeattle

HLN - SEA

HLNSEA

Helena

Fri 10/9

4:48 pm-5:41 pm

Nonstop1h 53m

Seattle/Tacoma Intl

Mon 10/12

1:36 pm-4:11 pm

Nonstop1h 35m

$277

HelenaSeattle

HLN - SEA

HLNSEA

Helena

Thu 9/24

12:57 pm-6:36 pm

1 stop6h 39m

Seattle/Tacoma Intl

Sat 9/26

5:45 am-12:17 pm

1 stop5h 32m

$283

HelenaSeattle

HLN - SEA

HLNSEA

Helena

Thu 9/24

12:57 pm-6:36 pm

1 stop6h 39m

Seattle/Tacoma Intl

Sat 9/26

5:45 am-12:17 pm

1 stop5h 32m

$288

HelenaSeattle

HLN - SEA

HLNSEA

Helena

Mon 8/17

5:09 pm-6:01 pm

Nonstop1h 52m

Seattle/Tacoma Intl

Wed 8/19

1:58 pm-4:34 pm

Nonstop1h 36m

$312

HelenaSeattle

HLN - SEA

HLNSEA

Helena

Thu 8/20

5:34 pm-6:30 pm

Nonstop1h 56m

Seattle/Tacoma Intl

Sun 8/23

2:19 pm-4:55 pm

Nonstop1h 36m

$322
Quickest round-trip

HelenaSeattle

HLN - SEA

HLNSEA

Helena

Fri 7/31

5:09 pm-6:01 pm

Nonstop1h 52m

Seattle/Tacoma Intl

Thu 8/6

1:57 pm-4:32 pm

Nonstop1h 35m

$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 Washington from

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

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 State of Washington?

The month of November is, on average, the cheapest month to fly to State of Washington from Helena, with most prices found around $127. If you aren’t able to travel to State of Washington during the month of November, then flying in May is also cheap. Prices for this month can be found on momondo for an average of $137.

What is the cheapest day to depart on your flight to State of Washington?

The cheapest day to depart from Helena to State of Washington is on a Wednesday. Travelers who choose to depart for State of Washington on a Wednesday will often find tickets for as low as $227. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Helena to State of Washington for around $596.

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

The cheapest time of day to fly to State of Washington is in the afternoon when flights can be purchased for as low as $353. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $572 on average. Flights to State of Washington from Helena in the evening are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Helena to Washington flight route?

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

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

There are 4 cabin classes available to choose from on Helena to State of Washington 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 Helena to State of Washington flights?

No. A direct flight is the cheapest option for a flight between Helena to State of Washington.

Cheap Helena to State of Washington flight deals and tips

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

Best Price Found

$218

Fastest flight time

1h 52m

Direct flights

Every day

Airports in State of Washington

96 airports
The best one-way flight to State of Washington from Helena in the past 72 hours is $218. The best round-trip flight deal from Helena to State of Washington found on momondo in the last 72 hours is $413.
The fastest flight from Helena to State of Washington takes 1h 52m
Direct flights go from Helena to State of Washington every day.
There are 96 airports in State of Washington. From Helena there are direct flights to Seattle/Tacoma Intl (SEA).
Search flight deals

Frequently asked questions about flying from Helena to Washington

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

    Prices for flights from Helena Airport to Washington refresh daily.

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

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

    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 Helena Airport to Washington.

  • What documentation or ID do you need to fly to Washington?

    The travel and health documents required for your trip to Washington can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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

Best airlines flying from Helena to State of Washington

Compare and see reviews for airlines that fly from Helena to State of Washington with momondo
Airline
Rating
Free Cancellation
Price
Alaska AirlinesPriceFrom $137Free CancellationRating
7.9
12,606 reviews
Search Alaska Airlines flights

Why use momondo?

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

Finding the right flight to Washington from Helena is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Washington quick and easy, saving you time and money.

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

Yes. momondo allows you to filter the results for Helena to Washington flights to just show those with flexible booking policies.

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

momondo provides multiple filters to help you find the best flight to Washington from Helena. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

If you are simply researching potential flights to Washington, momondo offers a useful price alert feature which will track prices for flights to Washington from Helena and alert you when they change.

An easier way to manage your State of Washington trip

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