Find Cheap Flights from Helena to Seattle/Tacoma Intl (HLN - SEA)

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Good to Know

Average Price:
$359
(avg. price over the last 2 weeks)
Good Deal:
$284
or less (round trip)

When to Book Flights from Helena to Seattle/Tacoma Intl

Flight prices as travel date approaches
-1 day
-2 days

Top tips for Finding a Cheap Flight

Looking for a cheap flight? 25% of our users found flights on this route for $284 or less.
The cheapest flight from Helena to Seattle/Tacoma Intl was found 42 days before departure, on average.
Book at least 3 weeks before departure in order to get a below-average price.
Morning departure is around 6% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for Booking Helena to Seattle/Tacoma Intl Flights

How long does a flight from Helena to Seattle/Tacoma Intl take?
An average nonstop flight takes 1h 46m, covering a distance of 489 miles.
How many flights are there between Helena and Seattle/Tacoma Intl?
There are 57 (nonstop) flights between Helena and Seattle/Tacoma Intl per week, averaging 8 per day.
Which airlines provide the cheapest flights from Helena to Seattle/Tacoma Intl?
In the past 3 days, the cheapest round-trip tickets were found on Alaska Airlines ($267), Multiple Airlines ($277) and American Airlines ($427).
Do I need a passport to fly between Helena and Seattle/Tacoma Intl?
No.
Which airlines fly most frequently between Helena and Seattle/Tacoma Intl?
Alaska Airlines (4 times daily), American Airlines (2 times daily), Korean Air (2 times daily) are the most frequent flyers on this route.
What’s the cheapest day of the week to fly Helena to Seattle/Tacoma Intl?
For Helena to Seattle/Tacoma Intl, Wednesday is the cheapest day to fly on average and Saturday is the most expensive. Flying from Seattle/Tacoma Intl back to Helena, the best deals are generally found on Sunday, with Friday being the most expensive.

Book cheap flights from Helena to Seattle/Tacoma Intl (round-trip)

Airports
Origin
Helena
$267
only
$267
Destination
Seattle
$267
only
$267
Wed, Feb 28
HLN
SEA
2h 00m
Mon, Mar 5
SEA
HLN
1h 38m
Trip: 6 days
8.3ExcellentShow reviews
Overall 8.3 Excellent
Based on 5 reviews
Overall
8.6
Boarding
8.7
Comfort
8.4
Crew
8.9
Entertainment
7.9
Food
8.0
SAT
SEA
Excellent 9.0

Overall I liked all of it the food was nothing amazing but it's an airline I appreciate anything if I forgot to order anything from their fantastic shop inside the San Antonio airport.

Nothing I liked it all very much thank you everyone I really felt so comfortable and I appreciate all of your service :) :) I hope you all have a good day today be warm and try to feel good even when times want you to feel bad. Take care all of you thank you so much.

SAN
SEA
Excellent 10.0

Nothing

SFO
SEA
Mediocre 2.0

So bad customer service

SEA
ONT
Excellent 10.0

Accommodated my disabled mother through the whole flying process. Thank you

SEA
ORD
Okay 5.6

No free food was offered. Movies were not free.

Wed, Feb 28
HLN
SEA
2h 00m
Sat, Mar 10
SEA
HLN
1h 38m
Trip: 11 days
Overall 0.0 Poor
Based on 0 reviews
Fri, Mar 30
HLN
SEA
1h 52m
Sun, Apr 1
SEA
HLN
1h 41m
Trip: 3 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 27289 reviews
Overall
7.3
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
ONT
DFW
Excellent 10.0

Everything was great

ORD
LGA
Okay 5.3

Gates, delays, changes

Boarding was a mess. No opportunity for priority boarding. Flight crew no help. Just another hum drum experience.

CLT
LHR
Okay 5.0

We didn’t crash

Pushed out of my seat by huge man next to me who ate smelly crisps and farted most of the trip

LAX
MIA
Excellent 10.0

Courteous and efficient service, good communication from employees.

Rude passengers reclining all the way without notice.

LIM
CLO
Excellent 8.0

The entertainment screens did not work in my seat and my wife's seat.

Thu, Mar 1
HLN
SEA
2h 00m
Sat, Mar 3
SEA
HLN
1h 38m
Trip: 3 days
8.3ExcellentShow reviews
Overall 8.3 Excellent
Based on 5 reviews
Overall
8.6
Boarding
8.7
Comfort
8.4
Crew
8.9
Entertainment
7.9
Food
8.0
SEA
ONT
Excellent 10.0

Accommodated my disabled mother through the whole flying process. Thank you

SAN
SEA
Excellent 10.0

Nothing

SLC
LAX
Excellent 8.6

Nothing outrageous or out of the ordinary happened.

SAT
SEA
Excellent 9.0

Overall I liked all of it the food was nothing amazing but it's an airline I appreciate anything if I forgot to order anything from their fantastic shop inside the San Antonio airport.

Nothing I liked it all very much thank you everyone I really felt so comfortable and I appreciate all of your service :) :) I hope you all have a good day today be warm and try to feel good even when times want you to feel bad. Take care all of you thank you so much.

SEA
ORD
Okay 5.6

No free food was offered. Movies were not free.

Thu, May 17
HLN
SEA
1h 46m
Sun, May 20
SEA
HLN
1h 40m
Trip: 4 days
Overall 0.0 Poor
Based on 0 reviews
Sat, Jan 20
HLN
SEA
7h 05m
Tue, Jan 23
SEA
HLN
8h 45m
Trip: 4 days
7.8GoodShow reviews
Overall 7.8 Good
Based on 15283 reviews
Overall
8.0
Boarding
8.1
Comfort
7.7
Crew
8.4
Entertainment
7.5
Food
7.3
BWI
ATL
Okay 5.0

The crew was very nice and attentative.

The amount of delays causing us to miss our connection and be stuck in another city for a night before getting to our destination the next day(hopefully).

CUN
MSP
Good 6.0

Flight was fine.

My one complaint is the bathroom layout of the A320. Two tiny closet bathrooms in the back for all of coach and a much larger one much larger one first class (which is like 5 rows with a mesh curtain for separation). The coach bathrooms are so small a normal person can barely get in and turn around to close the door. I question whether a larger person would be able to actually use them. I also saw the flight attendant actively turn away coach passengers trying to use the first class bathroom when it was open (not standing in the aisle or anything annoying like that). That's ridiculous to have 2 tiny bathrooms for all of coach and also to make people walk all the way to the back of the plane when you are seated much closer to the first class bathroom.

IAD
DTW
Mediocre 2.0

Seeing as I’m still waiting for my flight, more than five hours later I am not inclined to rank it highly. This airport is an embarrassment and I will try my best to never fly Delta again. Weather is no excuse for this.

LGA
FLL
Excellent 8.0

When the passenger in front reclines their seat it was in my face The legroom wasn’t terrible but I had a hard time even reading since it was so close

IAD
ATL
Excellent 8.0

My flight was canceled but Delta rebooked me on a flight leaving at about the same time as my original flight, which arrived just a little later than originally anticipated

My original flight was canceled

Mon, May 21
HLN
SEA
1h 50m
Wed, May 23
SEA
HLN
1h 40m
Trip: 3 days
Overall 0.0 Poor
Based on 0 reviews
Sat, Apr 7
HLN
SEA
1h 52m
Sun, Apr 8
SEA
HLN
1h 41m
Trip: 2 days
8.3ExcellentShow reviews
Overall 8.3 Excellent
Based on 5 reviews
Overall
8.6
Boarding
8.7
Comfort
8.4
Crew
8.9
Entertainment
7.9
Food
8.0
SAT
SEA
Excellent 9.0

Overall I liked all of it the food was nothing amazing but it's an airline I appreciate anything if I forgot to order anything from their fantastic shop inside the San Antonio airport.

Nothing I liked it all very much thank you everyone I really felt so comfortable and I appreciate all of your service :) :) I hope you all have a good day today be warm and try to feel good even when times want you to feel bad. Take care all of you thank you so much.

SFO
SEA
Mediocre 2.0

So bad customer service

SEA
ONT
Excellent 10.0

Accommodated my disabled mother through the whole flying process. Thank you

SLC
LAX
Excellent 8.6

Nothing outrageous or out of the ordinary happened.

DEN
SEA
Okay 4.0

I had only 40 minutes to get to my connecting flight. Then the plane was 15 minutes late. They wouldn't switch me to a seat that was open closer to front of plane and my bag was lost w important things in it that I need for this evenings show. I'm a full time musician.

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Helena to Seattle/Tacoma Intl Flight Information

Avg. Flight Duration 1h 46m
Flights Arrive in Seattle/Tacoma Intl
Flights Depart from Helena
Flight Price $267
Distance 489 miles
Airlines Alaska Airlines, American Airlines, Delta
*
Prices are per person and are for e–tickets and include all taxes & fees in USD.

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The fares displayed include all taxes and fees for economy class travel and were found by the provider in the last 72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags. Please check the carriers' sites.