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Cheap flights from Great Falls to Seattle from $128

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Great Falls to Seattle departing on 6/5. 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
0 bags

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Find the cheapest flights from Great Falls to Seattle

Cheap round-trip flights

Enter your travel dates to find the best prices.
Alaska Airlines Logo
6:52 pm - 7:38 pm
GTF
-
SEA
1h 46mnonstop
Alaska Airlines Logo
3:36 pm - 6:12 pm
SEA
-
GTF
1h 36mnonstop
$187Alaska Airlines
Sat, May 23 - Wed, May 27
Delta Logo
6:19 pm - 12:10 am
GTF
-
SEA
6h 51m
1 stop
Delta Logo
9:25 am - 5:39 pm
SEA
-
GTF
7h 14m
1 stop
$196Delta
Wed, Jun 3 - Sat, Jun 6
Delta Logo
6:19 pm - 12:10 am
GTF
-
SEA
6h 51m
1 stop
Delta Logo
9:30 am - 5:44 pm
SEA
-
GTF
7h 14m
1 stop
$236Delta
Fri, Jun 5 - Sun, Jun 7
Alaska Airlines Logo
6:52 pm - 7:38 pm
GTF
-
SEA
1h 46mnonstop
Alaska Airlines Logo
3:36 pm - 6:12 pm
SEA
-
GTF
1h 36mnonstop
$237Alaska Airlines
Wed, May 20 - Thu, May 21
Delta Logo
6:19 pm - 12:10 am
GTF
-
SEA
6h 51m
1 stop
Delta Logo
9:25 am - 5:39 pm
SEA
-
GTF
7h 14m
1 stop
$246Delta
Wed, Jun 3 - Sat, Jun 6
Alaska Airlines Logo
6:52 pm - 7:38 pm
GTF
-
SEA
1h 46mnonstop
Alaska Airlines Logo
1:53 pm - 4:29 pm
SEA
-
GTF
1h 36mnonstop
$252Alaska Airlines
Tue, Jun 9 - Thu, Jun 18
Delta Logo
6:19 pm - 12:10 am
GTF
-
SEA
6h 51m
1 stop
Delta Logo
9:30 am - 5:44 pm
SEA
-
GTF
7h 14m
1 stop
$256Delta
Fri, Jun 5 - Mon, Jun 8
Alaska Airlines Logo
6:52 pm - 7:38 pm
GTF
-
SEA
1h 46mnonstop
Alaska Airlines Logo
1:53 pm - 4:29 pm
SEA
-
GTF
1h 36mnonstop
$262Alaska Airlines
Sun, Jun 7 - Sun, Jun 14
Alaska Airlines Logo
6:52 pm - 7:38 pm
GTF
-
SEA
1h 46mnonstop
Alaska Airlines Logo
1:53 pm - 4:29 pm
SEA
-
GTF
1h 36mnonstop
$292Alaska Airlines
Tue, Jun 9 - Wed, Jun 17
Delta Logo
6:19 pm - 10:01 pm
GTF
-
SEA
4h 42m
1 stop
Delta Logo
5:30 am - 12:40 pm
SEA
-
GTF
6h 10m
1 stop
$296Delta
Tue, Jun 2 - Tue, Jun 9

Delta flights from Great Falls to Seattle

Our best Delta deals on Great Falls to Seattle flight tickets
Delta
Jun 3
GTF6:19 pmGreat Falls
6h 51m
1 stop
SEA12:10 amSeattle/Tacoma Intl
Jun 6
SEA9:25 amSeattle/Tacoma Intl
7h 14m
1 stop
GTF5:39 pmGreat Falls
$196
Delta
Jun 5
GTF6:19 pmGreat Falls
6h 51m
1 stop
SEA12:10 amSeattle/Tacoma Intl
Jun 7
SEA9:30 amSeattle/Tacoma Intl
7h 14m
1 stop
GTF5:44 pmGreat Falls
$236
Delta
Jun 3
GTF6:19 pmGreat Falls
6h 51m
1 stop
SEA12:10 amSeattle/Tacoma Intl
Jun 6
SEA9:25 amSeattle/Tacoma Intl
7h 14m
1 stop
GTF5:39 pmGreat Falls
$246

Alaska Airlines flights from Great Falls to Seattle

Our best Alaska Airlines deals on Great Falls to Seattle flight tickets
Alaska Airlines
May 23
GTF6:52 pmGreat Falls
1h 46m
SEA7:38 pmSeattle/Tacoma Intl
May 27
SEA3:36 pmSeattle/Tacoma Intl
1h 36m
GTF6:12 pmGreat Falls
$187
Alaska Airlines
May 20
GTF6:52 pmGreat Falls
1h 46m
SEA7:38 pmSeattle/Tacoma Intl
May 21
SEA3:36 pmSeattle/Tacoma Intl
1h 36m
GTF6:12 pmGreat Falls
$237
Alaska Airlines
Jun 9
GTF6:52 pmGreat Falls
1h 46m
SEA7:38 pmSeattle/Tacoma Intl
Jun 18
SEA1:53 pmSeattle/Tacoma Intl
1h 36m
GTF4:29 pmGreat Falls
$252

momondo Fare Finder

 
Customize your flight search to find flights from Great Falls to Seattle 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 April 28, 2026.
Use the filters below to find and compare flights from Great Falls to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

Great FallsSeattle

GTF - SEA

GTFSEA

Great Falls

Sat 5/23

6:52 pm-7:38 pm

Nonstop1h 46m

Seattle/Tacoma Intl

Wed 5/27

3:36 pm-6:12 pm

Nonstop1h 36m

$187

Great FallsSeattle

GTF - SEA

GTFSEA

Great Falls

Wed 6/3

6:19 pm-12:10 am

1 stop6h 51m

Seattle/Tacoma Intl

Sat 6/6

9:25 am-5:39 pm

1 stop7h 14m

$196

Great FallsSeattle

GTF - SEA

GTFSEA

Great Falls

Fri 6/5

6:19 pm-12:10 am

1 stop6h 51m

Seattle/Tacoma Intl

Sun 6/7

9:30 am-5:44 pm

1 stop7h 14m

$236

Great FallsSeattle

GTF - SEA

GTFSEA

Great Falls

Wed 5/20

6:52 pm-7:38 pm

Nonstop1h 46m

Seattle/Tacoma Intl

Thu 5/21

3:36 pm-6:12 pm

Nonstop1h 36m

$237

Great FallsSeattle

GTF - SEA

GTFSEA

Great Falls

Wed 6/3

6:19 pm-12:10 am

1 stop6h 51m

Seattle/Tacoma Intl

Sat 6/6

9:25 am-5:39 pm

1 stop7h 14m

$246

Great FallsSeattle

GTF - SEA

GTFSEA

Great Falls

Tue 6/9

6:52 pm-7:38 pm

Nonstop1h 46m

Seattle/Tacoma Intl

Thu 6/18

1:53 pm-4:29 pm

Nonstop1h 36m

$252

Great FallsSeattle

GTF - SEA

GTFSEA

Great Falls

Fri 6/5

6:19 pm-12:10 am

1 stop6h 51m

Seattle/Tacoma Intl

Mon 6/8

9:30 am-5:44 pm

1 stop7h 14m

$256

Great FallsSeattle

GTF - SEA

GTFSEA

Great Falls

Sun 6/7

6:52 pm-7:38 pm

Nonstop1h 46m

Seattle/Tacoma Intl

Sun 6/14

1:53 pm-4:29 pm

Nonstop1h 36m

$262

Great FallsSeattle

GTF - SEA

GTFSEA

Great Falls

Tue 6/9

6:52 pm-7:38 pm

Nonstop1h 46m

Seattle/Tacoma Intl

Wed 6/17

1:53 pm-4:29 pm

Nonstop1h 36m

$292

Great FallsSeattle

GTF - SEA

GTFSEA

Great Falls

Tue 6/2

6:19 pm-10:01 pm

1 stop4h 42m

Seattle/Tacoma Intl

Tue 6/9

5:30 am-12:40 pm

1 stop6h 10m

$296

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 resultsSorted by cheapest first
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See travel insights to Seattle from

How to get the cheapest flight ticket from Great Falls to Seattle

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 typical price of a round-trip flight between Great Falls and Seattle?

What is the cheapest month to fly to Seattle?

In general, January is the cheapest month to fly from Great Falls to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $206. If you don’t want to visit Seattle in January, then you should wait until February to fly from Great Falls, when ticket prices are also cheap, with an average price of $212.

What is the cheapest day to depart on your flight to Seattle?

On average, the least expensive day to fly to Seattle from Great Falls is on a Thursday. momondo users have found tickets for Thursday departures for as low as $272. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Monday is the most expensive day to depart from Great Falls because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $504.

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

Flying to Seattle from Great Falls in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $343 when looking at flights departing in the afternoon. Flights to Seattle are more costly in the evening, with an average ticket price of $415. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Great Falls to Seattle/Tacoma Intl flight route?

Fly from Great Falls to Seattle/Tacoma Intl for the best Great Falls - Seattle/Tacoma Intl flight prices

What cabin class options are available on Great Falls to Seattle flights?

There are 2 cabin classes available to choose from on Great Falls to Seattle 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 Great Falls to Seattle flights?

No. A direct flight is the cheapest option for a flight between Great Falls to Seattle.

When to book flights from Great Falls to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Great Falls to Seattle according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Great Falls to Seattle (GTF to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Great Falls to Seattle

Best Price Found

$189

Fastest flight time

1h 46m

Direct flights

Every day

Airports in Seattle

1 airport
The best one-way flight to Seattle from Great Falls in the past 72 hours is $189. The best round-trip flight deal from Great Falls to Seattle found on momondo in the last 72 hours is $222.
The fastest flight from Great Falls to Seattle takes 1h 46m
Direct flights go from Great Falls to Seattle every day.
There is 1 airport in Seattle. From Great Falls there are direct flights to Seattle/Tacoma Intl (SEA).
Search flight deals

Frequently asked questions about flying from Great Falls to Seattle

  • How far is Great Falls to Seattle/Tacoma Intl by plane?

    There are 514.0 mi between Great Falls and Seattle/Tacoma Intl. A reasonable flight in good conditions will take 1h 46m.

  • When did momondo last update prices for flights from Great Falls Airport to Seattle/Tacoma Intl Airport?

    Prices for flights from Great Falls Airport to Seattle/Tacoma Intl Airport refresh daily.

  • How many operators does momondo search for flights from Great Falls Airport to Seattle/Tacoma Intl Airport?

  • How old do you have to be to fly from Great Falls Airport to Seattle/Tacoma Intl Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Great Falls Airport to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The travel and health documents you'll need for your trip to Seattle/Tacoma Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Great Falls to Seattle?

  • What is the most popular airline from Great Falls to Seattle?

Best airlines flying from Great Falls to Seattle

Compare and see reviews for airlines that fly from Great Falls to Seattle with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $103Free CancellationRating
7.9
8,466 reviews
Search Delta flights
Alaska AirlinesPriceFrom $146Free CancellationRating
7.9
12,311 reviews
Search Alaska Airlines flights

  • Alaska Airlines Flights From Great Falls to Seattle

    The lowest priced Alaska Airlines flight from Great Falls to Seattle from the last 72 hours was $146. Generally, Alaska Airlines has 7 flights on this route every week with an average price of $273. Alaska Airlines is rated 7.9/10 by our users.

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
Leavenworth
SeaTac
Ocean Shores
Renton
Olympia
Lynnwood
Redmond
Kent
Marysville
Puyallup
Tukwila
Lakewood
Cle Elum
Federal Way
Centralia
Fife
Shoreline
Westport
Tumwater

Why use momondo?

Why should I use momondo to find a flight deal from Great Falls to Seattle?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Great Falls to Seattle for you.

Can I find flights from Great Falls to Seattle with flexible booking policies on momondo?

momondo does allow users to show only those flights to Seattle from Great Falls which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Great Falls to Seattle?

Once all potential Great Falls to Seattle flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Price alerts on flights to Seattle from Great Falls are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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