AED380 Cheap Flights from Helena (HLN) to Seattle (SEA)

View AED380 flight on Wed, 29 October 2025Opens in a new window

Popular airlines from Helena, MT (HLN-Helena Regional) to Seattle-Tacoma International Airport (SEA)

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Cheap Flights from Helena to Seattle (HLN-SEA)

Prices were available within the past 7 days and start at AED380 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frequently asked questions

How long does it take to fly from HLN to Sea-Tac Airport?
Book your trip with Alaska Airlines and you can expect to be airborne for around 1 hour and 45 minutes. This top airline has a direct flight that jets off at 2:56PM from Helena Regional Airport (HLN) and comes in to land at Sea-Tac Airport at 3:41PM. Expedia has some incredible flight deals, so take a look at what's on offer on this route today.
Is it cheaper to buy a plane ticket from Helena Regional Airport (HLN) to Sea-Tac Airport last minute?
Being the spontaneous type is an amazing way to travel, but it isn't necessarily the smartest way to get your hands on a cheap airfare. Think about booking your HLN to Sea-Tac Airport trip in advance rather than leaving it to the last minute. Based on flight pricing and demand studies in 2022, we have found that the best time to book domestic flights is between 28 – 35 days ahead of the departure date, and international flights three to four months in advance. Leave all that spontaneity for when you're exploring Sea-Tac Airport!
What airports do you fly into for Seattle from Helena?
With Seattle - Tacoma Intl. Airport (SEA), Renton Municipal Airport (RNT) and Boeing Field Airport (BFI) to choose from, connecting from Helena to Seattle is a cinch. The city's busiest terminal, Seattle - Tacoma Intl. Airport (SEA), is approximately 19 kilometers south of the downtown area. Along with the price of fares, consider things like transportation options from the airport and the distance to your hotel when deciding where to land. Get your Seattle adventure off to a superb start by exploring Space Needle and Pike Place Market.
What are the most popular departure times for flights from Helena Regional Airport (HLN) to Sea-Tac Airport?
For Alaska Airlines flights heading from Helena Regional Airport to Seattle - Tacoma Intl. Airport (SEA), the peak period is between 2:00 PM - 3:00 PM. If you'd like to avoid any holdups, head off in the morning. This way you can dodge the air traffic that builds up around airports later in the day.
Can I change the date of my flight from Helena Regional Airport (HLN) to SEA?
You can make changes to your Helena Regional Airport (HLN) to SEA trip by logging in to the Expedia Trips portal. But before you begin, look over the conditions in your itinerary to find out what the airline will let you do and if any charges apply. Some carriers charge a change fee per person, plus any difference in ticket prices. But if you booked in the last 24 hours, you may be able to cancel for free and book new flights. You can also stop by our Customer Service portal for more info and to connect with our Virtual Agent.

Travel information

Travel information

Origin airport
Helena Regional
Destination airport
Seattle - Tacoma Intl.
Distance
781 km
Average flight time
1 hour 52 mins

Book with confidence

Book with confidence

Helena to Seattle Flights

Whether you’re looking for a grand adventure or just want to get away for a last-minute break, flights from Helena to Seattle offer the perfect respite. Not only does exploring Seattle provide the chance to make some magical memories, dip into delectable dishes, and tour the local landmarks, but the cheap airfare means you won’t bust your budget. So no matter whether your ideal itinerary involves flying one way, non-stop, or round trip, you’re bound to find flights that match your schedule on Expedia, and at prices that won’t shock your wallet.

Bagging a cheap flight from Helena to Seattle may mean more dollars to spend on for one-of-a-kind souvenirs when you arrive, but it doesn’t mean you have to skimp on your travel experience, as Expedia offers a sizzling selection of cheap airlines that’ll put you in your happy place on their planes, whether that’s getting lost in a hair-raising airport thriller, dreaming on the passing landscape over a glass of bubbly, or jotting down your vacation bucket list at 38,000 feet. There’s also bound to be plenty of opportunities to snap a few photos of the high life that will make your friends green with envy. After all, enjoying the journey is part of the fun.

With so many affordable flights and so many wonderful adventures awaiting you, there’s no reason to put off booking a fantastic flight from to today. So don’t leave it to the last minute to make your dream trip a reality: pack your bags with your go-to travel accessories, put together your list of must-see attractions and can’t-miss activities, and get ready to broaden your horizons – with Expedia, the wonders of Seattle are only a plane trip away. Book your travel arrangements with us today!

If you would like to book flights to Seattle more flexibly many prefer to purchase one-way tickets with options to take different airlines. A one way ticket to Seattle is AED380 now!

Helena to Seattle Flights

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