Route guide · 811 miles
Cheap Flights from Las Vegas to Great Falls
LAS → GTF · Nonstop 2h 9m · Live round-trip fares
If Great Falls is next on your list, here's the honest picture on fares from Las Vegas. The trip covers about 811 miles and takes roughly 2h 9m in the air. Prices on this route reward planners: booking 3–6 weeks ahead is the sweet spot, and the lowest fares tend to sell out fast.
Live fares for LAS → GTF are updating. Use the search below for real-time prices.
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Updated daily
Flight time
2h 9m
Nonstop, typical
Distance
811 mi
LAS → GTF
Book ahead
3–6 weeks
Best window, typically
Nonstop airlines
1
Allegiant Air
Nonstop flights from Las Vegas to Great Falls
Nonstop flights from Las Vegas to Great Falls are flown by Allegiant Air. The 811-mile trip takes about 2h 9m gate to gate, and nonstops are usually cheapest when booked 3–6 weeks ahead.
Booking insights: Las Vegas → Great Falls
- Distance: 811 miles · nonstop flight time: 2h 9m.
- Fares tend to bottom out when you book about 3–6 weeks ahead — earlier than that rarely helps, later usually hurts.
- Tuesday and Wednesday departures usually undercut Friday and Sunday fares on routes like this one.
- A free fare alert beats daily checking: we watch this route and ping you when prices drop.
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Flying from Las Vegas to Great Falls: what you need to know
The flight
The nonstop from LAS to GTF runs about 2h 9m over 811 miles. It's a comfortable mid-range flight: long enough that seat choice matters a little, short enough that paying up for extras rarely does.
Airlines on this route
Allegiant Air flies this route nonstop. That matters more than it sounds: the cheapest fare on one carrier is rarely the same product as the cheapest on another. Checked-bag fees, free seat selection and change rules all differ, so compare the full trip cost before you pick a winner. See our airline guides for exactly what each carrier charges — then send an enquiry and we'll confirm the all-in price for your dates.
Leaving from Las Vegas (LAS)
Plan to be at the airport two hours before a domestic departure — ninety minutes can work at smaller airports outside peak times, but security lines are the one variable you can't control. If you're checking a bag, add time rather than cutting it close. Our Las Vegas airport guide covers terminals, parking and ground transport so you can plan the trip to the airport, not just the flight.
Arriving in Great Falls (GTF)
Before you land, know how you're getting from the airport to where you're staying — it's the part of the trip people forget to plan. The Great Falls airport guide lays out your ground options, from transit and shuttles to rideshares and rental cars. Flying back the other way? Check Great Falls to Las Vegas fares — prices on the return direction often move on a different rhythm.
When to book
For a trip of 811 miles, booking 3–6 weeks ahead typically lands you in the sweet spot. Leave it to the final two weeks and prices usually climb as the cheapest seats sell out. If your dates are flexible, midweek departures are where the lower fares hide on most domestic routes.
Good to know before you go
- Get to the airport two hours before departure; security, not the flight, is the part that runs late.
- If you're traveling with only a carry-on, you can skip the bag-drop line entirely with mobile check-in.
- Download the airline's app before you fly; gate changes and delays show up there first.
- Nonstop time on this route is about 2h 9m — a one-stop itinerary needs to be a lot cheaper to be worth the extra hours.
- Tuesday and Wednesday departures are typically the cheapest days on domestic routes.
Las Vegas to Great Falls flight FAQs
How long is the flight from LAS to GTF?
Plan on about 2h 9m in the air for a nonstop from Las Vegas to Great Falls — the route runs roughly 811 miles. Connecting flights typically add 2–4 hours.
Are there nonstop flights from Las Vegas to Great Falls?
Allegiant Air typically operate nonstop flights from LAS to GTF. Nonstops are usually cheapest when booked 3–6 weeks ahead of departure.
What is the cheapest month to fly from Las Vegas to Great Falls?
Travelers usually find the gentlest prices away from peak periods — think post-holiday January and the early-fall weeks. Midweek dates inside those windows are cheaper still.
How much are last minute flights from LAS to GTF?
Walking up to this route at the last minute is the expensive way to do it — prices inside 7 days of departure climb fast. The 3–6 weeks booking window is where the value sits.
What is a good round-trip deal from Las Vegas to Great Falls?
A good deal is anything at or below the recent fares shown above. Set a free Airfare Deal alert and we'll ping you the moment fares drop.
Which airlines fly from Las Vegas to Great Falls?
You'll mainly see Allegiant Air on Las Vegas to Great Falls. Checking each against the live fares below is the surest way to find the lowest price for your dates.
How early should I get to Las Vegas airport for this flight?
Plan on two hours before departure for a domestic flight — ninety minutes can work at smaller airports outside peak times. If you're checking a bag, earlier is better; the bag-drop line, not the flight, is what runs late.
Do the cheapest fares on this route include a checked bag?
Usually not. Basic economy fares on most airlines include a carry-on but charge extra for checked bags, and seat selection can cost more too. Add up the real total before comparing — a slightly higher regular fare sometimes works out cheaper. Our team confirms the full breakdown with you before you pay.
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