S$496 Cheap Flights from Helena to Seattle

View S$496 flight on Fri, 26 Dec, 2025Opens in a new window

Popular airlines from Helena, MT (HLN-Helena Regional) to Seattle

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Cheap Flights from Helena to Seattle (HLN-SEA)

Prices were available within the past 7 days and start at S$496 for one-way flights and S$824 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Fri, 26 Dec - Fri, 2 Jan
HLN
Helena
SEA
Seattle
S$824 Return, found 6 days ago
S$824
Return
found 6 days ago
Select Delta flight, departing Fri, 26 Dec from Helena to Seattle, returning Fri, 2 Jan, priced at S$824 found 6 days ago
Delta
Fri, 26 Dec - Fri, 2 Jan
HLN
Helena
SEA
Seattle
S$875 Return, found 6 days ago
S$875
Return
found 6 days ago
Select Delta flight, departing Fri, 26 Dec from Helena to Seattle, returning Fri, 2 Jan, priced at S$875 found 6 days ago
Delta
Fri, 26 Dec - Fri, 2 Jan
HLN
Helena
SEA
Seattle
S$894 Return, found 6 days ago
S$894
Return
found 6 days ago
Select Delta flight, departing Fri, 26 Dec from Helena to Seattle, returning Fri, 2 Jan, priced at S$894 found 6 days ago
Delta
Fri, 26 Dec - Fri, 2 Jan
HLN
Helena
SEA
Seattle
S$902 Return, found 6 days ago
S$902
Return
found 6 days ago
Select Delta flight, departing Fri, 26 Dec from Helena to Seattle, returning Fri, 2 Jan, priced at S$902 found 6 days ago
Delta
Fri, 26 Dec - Fri, 2 Jan
HLN
Helena
SEA
Seattle
S$940 Return, found 6 days ago
S$940
Return
found 6 days ago
Select Delta flight, departing Fri, 26 Dec from Helena to Seattle, returning Fri, 2 Jan, priced at S$940 found 6 days ago
Delta
Fri, 26 Dec - Fri, 2 Jan
HLN
Helena
SEA
Seattle
S$959 Return, found 6 days ago
S$959
Return
found 6 days ago
Select Delta flight, departing Fri, 26 Dec from Helena to Seattle, returning Fri, 2 Jan, priced at S$959 found 6 days ago
United
Fri, 26 Dec - Fri, 2 Jan
HLN
Helena
SEA
Seattle
S$973 Return, found 6 days ago
S$973
Return
found 6 days ago
Select United flight, departing Fri, 26 Dec from Helena to Seattle, returning Fri, 2 Jan, priced at S$973 found 6 days ago
United
Fri, 26 Dec - Fri, 2 Jan
HLN
Helena
SEA
Seattle
S$999 Return, found 6 days ago
S$999
Return
found 6 days ago
Select United flight, departing Fri, 26 Dec from Helena to Seattle, returning Fri, 2 Jan, priced at S$999 found 6 days ago
United
Fri, 26 Dec - Fri, 2 Jan
HLN
Helena
SEA
Seattle
S$1,037 Return, found 6 days ago
S$1,037
Return
found 6 days ago
Select United flight, departing Fri, 26 Dec from Helena to Seattle, returning Fri, 2 Jan, priced at S$1,037 found 6 days ago
Delta
Fri, 26 Dec - Fri, 2 Jan
HLN
Helena
SEA
Seattle
S$1,044 Return, found 6 days ago
S$1,044
Return
found 6 days ago
Select Delta flight, departing Fri, 26 Dec from Helena to Seattle, returning Fri, 2 Jan, priced at S$1,044 found 6 days ago
Delta
Fri, 26 Dec - Fri, 2 Jan
HLN
Helena
SEA
Seattle
S$1,057 Return, found 6 days ago
S$1,057
Return
found 6 days ago
Select Delta flight, departing Fri, 26 Dec from Helena to Seattle, returning Fri, 2 Jan, priced at S$1,057 found 6 days ago
United
Fri, 26 Dec - Fri, 2 Jan
HLN
Helena
SEA
Seattle
S$1,076 Return, found 6 days ago
S$1,076
Return
found 6 days ago
Select United flight, departing Fri, 26 Dec from Helena to Seattle, returning Fri, 2 Jan, priced at S$1,076 found 6 days ago
Delta
Fri, 26 Dec - Fri, 2 Jan
HLN
Helena
SEA
Seattle
S$1,102 Return, found 6 days ago
S$1,102
Return
found 6 days ago
Select Delta flight, departing Fri, 26 Dec from Helena to Seattle, returning Fri, 2 Jan, priced at S$1,102 found 6 days ago
United
Fri, 26 Dec - Fri, 2 Jan
HLN
Helena
SEA
Seattle
S$1,108 Return, found 6 days ago
S$1,108
Return
found 6 days ago
Select United flight, departing Fri, 26 Dec from Helena to Seattle, returning Fri, 2 Jan, priced at S$1,108 found 6 days ago
United
Fri, 26 Dec - Fri, 2 Jan
HLN
Helena
SEA
Seattle
S$1,115 Return, found 6 days ago
S$1,115
Return
found 6 days ago
Select United flight, departing Fri, 26 Dec from Helena to Seattle, returning Fri, 2 Jan, priced at S$1,115 found 6 days ago
United
Fri, 26 Dec - Fri, 2 Jan
HLN
Helena
SEA
Seattle
S$1,213 Return, found 6 days ago
S$1,213
Return
found 6 days ago
Select United flight, departing Fri, 26 Dec from Helena to Seattle, returning Fri, 2 Jan, priced at S$1,213 found 6 days ago

Find the cheapest month to fly from Helena (HLN) to Seattle (SEA)

November is typically the cheapest month to fly

From S$164 - S$774 per traveller.

Frequently asked questions

How much is a flight from HLN to SEA?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price listed for a round-trip journey from Helena Regional Airport to Sea-Tac Airport was S$824. Cheap fares don't last long, so make sure you book yours ASAP. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Helena Regional Airport (HLN) to Seattle - Tacoma Intl. Airport (SEA)?
When it comes to cancellation fees, every airline has its own set of terms and conditions. If you decide to cancel your escape, head to our Customer Service Portal.
How do I find cheap flights from Helena Regional Airport to Sea-Tac Airport that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for HLN to Sea-Tac Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Helena Regional Airport (HLN) to Seattle - Tacoma Intl. Airport (SEA)?
That movie you've been wanting to see will just have to wait — the flight distance between Helena Regional Airport (HLN) and SEA is only 790 kilometres. The captain will be asking you to put your seat upright for touchdown before you know it.
Which airlines fly direct from Helena Regional Airport to SEA?
Offering 30 flights each month, Alaska Airlines (AS) is a top choice when flying straight from HLN to SEA.
Are Helena Regional Airport to SEA flight tickets cheaper when they're purchased at the last minute?
Last-minute bookings from Helena Regional Airport (HLN) to Seattle - Tacoma Intl. Airport (SEA) can be hit-or-miss. You may be able to find a bargain, but then again, you could miss out! If you'd rather play it safe and start planning early on, Expedia compares flight deals up to 12 months in advance. Just bear in mind that not all airlines publish their prices that far in advance. Our suggestion? Check back often as prices are updated frequently.

Travel information

Origin airport
Helena Regional
Destination airport
Seattle - Tacoma Intl.
Return price
S$824
Distance
781 km
Average flight time
1 hour 55 mins

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Perfect flights from Helena to Seattle

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With Expedia, you have access to a wide range of airlines, including Delta, United. Our selection of flights from Helena Regional to Seattle - Tacoma Intl. caters to every traveler's requirements, ensuring your journey aligns with your schedule. With options from 20 airlines, you're bound to find the perfect flight.
 

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Experience the joy of finding cheap flights from Helena Regional to Seattle - Tacoma Intl. that fit your budget. Keep an eye out for our special deals and discounts, and check our flexible one-way fares from S$496 and roundtrip prices from S$824*.
 

Pre-Flight Essentials

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Experience the Vibrant Seattle

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Added Convenience on Your Helena to Seattle Flight

Traveling with Expedia is more than just a flight. We offer details about in-flight amenities, baggage policies, and more to ensure a smooth and hassle-free journey. Choose from our variety of airlines and embark on a memorable journey from Helena to Seattle.
 

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Book Your Flight from Helena to Seattle with Confidence

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*Note: Prices may vary based on availability and are subject to change.
Perfect flights from Helena to Seattle

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