Compare fares, departure times, stops and baggage details for this route, then open the full search when you are ready to check current availability and complete booking.
GTFSEAThu, 08 Oct
Fare checked before payment No hidden charges Transparent cancellation policy 24×7 booking support
Lowest fareUS$301Delta Air Lines
Fastest1h 53mgate to gate
Options found37flights on this route
Find your flightGTF → SEA
Available Flights & Fares
Compare fares, timings and baggage. Pick the flight that suits your trip.
Prices in USD
37 flight options
Fares are checked again before payment.
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Delta Air Lines
DL-3862
05:40
2026-10-08
Great Falls (GTF)International
4H :30 M
1 Stop
SLC
· 0h 30m Salt Lake City (SLC), United States
09:10
2026-10-08
SEATTLE (SEA)Seattle/tacoma International
Non Refundable 4 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Type
Non Refundable
Fare Type
Publish
0 Pieces 1 Pieces
$650
Flight DetailsGTF to SEA - 4H :30 M
Baggage InfoCheck-in 0 Pieces - Cabin 1 Pieces
Fare RulesNon-refundable fare. Final rules are verified before booking.
Delta Air Lines
DL-3800
18:27
2026-10-08
Great Falls (GTF)International
4H :38 M
1 Stop
SLC
· 0h 31m Salt Lake City (SLC), United States
22:05
2026-10-08
SEATTLE (SEA)Seattle/tacoma International
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Type
Non Refundable
Fare Type
Publish
0 Pieces 1 Pieces
$650
Flight DetailsGTF to SEA - 4H :38 M
Baggage InfoCheck-in 0 Pieces - Cabin 1 Pieces
Fare RulesNon-refundable fare. Final rules are verified before booking.
United Airlines
UA-2107
06:15
2026-10-08
Great Falls (GTF)International
13H :29 M
2 Stops
DEN
· 1h 19m Denver (DEN), United States
SFO
· 5h 03m San Francisco (SFO), United States
18:44
2026-10-08
SEATTLE (SEA)Seattle/tacoma International
Non Refundable 3 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Type
Non Refundable
Fare Type
Publish
0 Pieces 1 Pieces
$658
Flight DetailsGTF to SEA - 13H :29 M
Baggage InfoCheck-in 0 Pieces - Cabin 1 Pieces
Fare RulesNon-refundable fare. Final rules are verified before booking.
Delta Air Lines
DL-3862
05:40
2026-10-08
Great Falls (GTF)International
14H :25 M
2 Stops
SLC
· 0h 30m Salt Lake City (SLC), United States
PDX
· 8h 59m Portland (PDX), United States
19:05
2026-10-08
SEATTLE (SEA)Seattle/tacoma International
Non Refundable 4 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Type
Non Refundable
Fare Type
Publish
0 Pieces 1 Pieces
$664
Flight DetailsGTF to SEA - 14H :25 M
Baggage InfoCheck-in 0 Pieces - Cabin 1 Pieces
Fare RulesNon-refundable fare. Final rules are verified before booking.
Type
Non Refundable
Fare Type
Publish
0 Pieces 1 Pieces
$825
Flight DetailsGTF to SEA - 14H :25 M
Baggage InfoCheck-in 0 Pieces - Cabin 1 Pieces
Fare RulesNon-refundable fare. Final rules are verified before booking.
No flights match the selected filters. Clear filters or open full search.
Today's Airfare Highlights
Selected flight highlights for 08 Oct 2026.
Lowest fare$301Delta Air Lines18:27
Earliest departure$419Delta Air Lines05:40
Shortest duration$502Alaska Airlines17:15
Night
00:00-05:59
$419Delta Air Lines at 05:40Morning
06:00-11:59
$527United Airlines at 06:15Afternoon
12:00-17:59
$320Delta Air Lines at 13:18Evening
18:00-23:59
$301Delta Air Lines at 18:27
Departure & Arrival Airport Details
Great Falls (GTF)
International
United States
GMT -7
Latitude: 47.48199844
Longitude: -111.3710022
Seattle (SEA)
Seattle/tacoma International
United States
GMT -8
Latitude: 47.449001
Longitude: -122.308998
Distance: Great Falls (GTF), United States to Seattle (SEA), United States - 821.56 km
Flights shown for 08 Oct 2026. View all flights opens the complete search result.
Fares and hotel rates usually run higher around these dates. Booking earlier — or shifting a day or two — often costs less.
Busiest periods: Summer travel (15 Jun – 31 Aug), Holiday season (18 Dec – 02 Jan).
12OctColumbus DayMonday · in 21 daysPeak
12OctColumbus DayMonday · in 21 daysPeak
12OctIndigenous Peoples' DayMonday · in 21 daysPeak
11NovVeterans DayWednesday · in 51 days
26NovThanksgiving DayThursday · in 66 days
25DecChristmas DayFriday · in 95 days
Fixed-date national holidays. Festivals that follow the lunar calendar shift each year and are not listed here — check the exact date for your travel year.
Compare your journey
How to travel Great Falls to Seattle
Every option we can actually book for you, compared on price and journey time.
Connecting flight₹28,916Longer — includes a stop36 options
Air distance is about 822 km. 3 airlines operate this route.
Road distance and coach duration are approximate estimates from the air distance, not a timetable.
Airlines flying from Great Falls to Seattle
Compare fares, stops, baggage and refundability across the airlines flying this route.
DE
Delta Air Lines Flights
from $30123 flights
Fares from
$301
Non-stop
None in these results
Departures
23 — compare timings in the list above
UN
United Airlines Flights
from $52713 flights
Fares from
$527
Non-stop
None in these results
Departures
13 — compare timings in the list above
Route Overview & Flight Facts
Fastest flight duration
1h 53m · Alaska Airlines
First departure of the day
05:40 · Delta Air Lines
Last departure of the day
18:27 · Delta Air Lines
Options in this snapshot
37
Direct / non-stop options
1
Airport codes
Great Falls–GTF, Seattle–SEA
Fares and timings are indicative — the exact price is confirmed with the airline when you search.
Flight Schedule, Timings & Airfare Insights
Daily Flight Schedule & Travel Duration
Around 37 flights appear in the dated route snapshot, including 1 non-stop option. Departures run through the day — the first flight leaves around 05:40 and the last around 18:27. The fastest flight takes about 1h 53m.
Morning vs Evening Departure Fares
Lowest fare by departure window: Evening from $301, Afternoon from $320, Night from $419, Morning from $527. These observations do not predict the cheapest departure window on other dates.
Cheapest Airfare & Best Time to Book
Search your travel dates to compare current fares — prices update continuously with airline inventory.
One-Way vs Round-Trip Fare Comparison
Compare the complete cost and conditions of both options for your dates. A round-trip can have different fare and change rules from two one-way tickets. One booking may contain multiple airline PNRs; confirm baggage transfer and connection protection for separate tickets.
Online Web Check-In & Boarding Pass
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How to Book Cheap Flights on FlyX
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2
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3
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4
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5
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Why Book Your Flight with FlyX?
Compare the available Great Falls to Seattle options by total price, stops, baggage and fare conditions. Search your dates for current availability, then review traveller details and the final price before paying.
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Frequently Asked Questions
Is it worth booking Great Falls to Seattle flights in advance?
There is no guaranteed cheapest booking window. Compare your planned dates early, check nearby dates and consider baggage, connection time and change conditions as well as price. Across the dates currently loaded for Great Falls to Seattle, Thursday shows the lowest fare at $301. That is an observed snapshot for these dates, not a rule that holds every week.
How far is Great Falls from Seattle by air?
The direct air distance between Great Falls (GTF) and Seattle (SEA) is about 822 km. Actual flight time varies with the routing the airline files and with winds on the day.
Are there non-stop flights from GTF to SEA?
Yes. 1 non-stop flight is showing on Great Falls to Seattle for the dates currently loaded. Use the Stops filter to see only those.
Which airlines fly Great Falls to Seattle?
Delta Air Lines and United Airlines are showing on this route for the dates currently loaded. Fares, baggage allowance and refund rules differ by airline and by fare type, so compare the fare conditions and not only the headline price.
How long is the flight from Great Falls to Seattle?
The quickest non-stop Great Falls to Seattle flight currently loaded takes about 1h 53m. Journeys with a stop take longer, since the total includes the layover.
What is the cheapest Great Falls to Seattle flight fare?
The lowest fare showing on Great Falls to Seattle for the dates currently loaded is $301. Fares on the same dates run up to $929, depending on airline, timing and fare type. Airline pricing moves continuously, so treat this as a dated observation rather than a fixed price.
What time do Great Falls to Seattle flights depart?
For the dates currently loaded the first departure is around 05:40 and the last is around 18:27, local time at Great Falls. Use the departure-time filter on the results above to narrow to a morning, afternoon or evening slot.
Why does the price change after clicking Book Now?
Airline seat inventory and fares change continuously. Selecting Book Now runs a live fare verification with the airline so the price you approve is the price you pay - if it has moved, you see the new figure before any payment.
Before you book this route
Check the airport codes GTF–SEA, local departure and arrival dates, and every connecting airport. Connections can have different document and baggage requirements from your final destination.
Where these fares come from
The fares, durations, stops and baggage shown here come from real airline search results for this route. They are examples for the dates on this page, not a full timetable and not a locked price — run a search to see what is available for your own dates.
Last checked .
Check official travel requirements
Confirm passport, visa and transit rules for your nationality and full itinerary with the relevant government and operating airline. IATA travel-document information explains why requirements vary.
Planning more than the flight? Our United States guide covers the visa process for Indian passport holders, best time to go, how long to plan for, and which places are worth the days you have. Long-haul city breaks and national parks.
The GTF to SEA cards above show selected flight options. Airline prices and seat availability can move quickly, so the final fare is rechecked in the booking flow.
Approx route distance: 821.56 km.
Before you book
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Lowest Great Falls to Seattle airfare today, in 30 days and in 90 days
Cheapest Fare
Fare
Date
Airline
Departure
Lowest Airfare Today
$301
08/10/2026
Delta Air Lines
18:27
Cheapest Airfare Within 30 Days
$295
21/10/2026
Delta Air Lines
18:27
Cheapest Airfare Within 90 Days
$286
20/12/2026
Delta Air Lines
18:27
Book Great Falls to Seattle Flight Tickets on FlyX
Planning to fly from Great Falls to Seattle? FlyX lets you compare flight rates, airline timings, layovers, and baggage allowances all in one simple list. From quick non-stop routes to flexible connecting options, finding and booking cheap air tickets has never been easier.
Great Falls to Seattle Flight Distance, Duration and Time
The aerial distance between Great Falls and Seattle is approximately 822 KM. The flight duration ranges from 1H :53 M up to 25H :25 M depending on whether you book a non-stop flight or a connecting schedule with layovers.
Great Falls to Seattle Flight Schedule and Timing
Around 37 flights operate on this route, providing plenty of choices for your travel window. The earliest morning flight departs from Great Falls at 05:40, while the last night flight leaves at 18:27. Flights depart from International and land at Seattle/tacoma International.
Flight Route Details & Analysis
Flight Details
Information
Route
Great Falls to Seattle
Aerial Distance
822 KM
Flight Duration
1H :53 M - 25H :25 M
Airport Codes
Great Falls - GTF, Seattle - SEA
Total Flights Available
37 flights (1 direct)
First Flight Departure
Departs at 05:40
Last Flight Departure
Departs at 18:27
Early Morning Flights (12 AM - 8 AM)
23 direct/indirect flights
Morning Flights (8 AM - 12 PM)
0 direct/indirect flights
Afternoon Flights (12 PM - 4 PM)
7 direct/indirect flights
Evening Flights (4 PM - 8 PM)
7 direct/indirect flights
Night Flights (8 PM - 12 AM)
0 direct/indirect flights
Airport Information & Terminals
GTF: Great Falls airport. Great Falls airport transfer should be matched to the exact hotel, suburb or meeting area. Rail can work well for light luggage, but late arrivals, winter weather and family baggage often make a direct cab or booked transfer easier.
SEA: Seattle-Tacoma International Airport. Sea-Tac connects to downtown by light rail, while cabs are useful for Bellevue, Redmond or late-night arrivals. Rain and freeway traffic should be part of the plan.
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