The cheapest times to fly from GTF to SMI are

  • February 19th to May 13th
  • September 3rd to December 16th (except the week of October 15th)

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from GTF to SMI is late October to early November. Prices can be as high as $6695 for Tuesday flights during early to mid July, or as low as $4751 for Saturday flights around late October to early November.


When to Fly to Samos

Flying from Great Falls, MT (GTF) to Samos (SMI) will usually cost between $5736 to $6586 per person if booking more than four weeks in advance. On average the very cheapest time to fly is late October to early November with an average ticket price of $5827. Due to high demand the most expensive time to fly is early to mid July, with an average price of $6581. Planning your trip to low-cost times can easily save you $754 on economy flights and even more on first-class flights. Generally, any price below $6208 can be considered a good price for a round-trip GTF to SMI flight.

See below for a graph of average weekly prices for the GTF to SMI route. All prices are for round-trip tickets in USD.

GTF to SMI Flight Prices

Compared to other flights, the GTF to SMI flight is more expensive than the average and costs more than the average flight leaving from Great Falls. The average price per mile (for a direct flight) is $0.64, which is above average.


Flight Prices by Day of the Week

Saturday is usually the cheapest day to depart and return on this flight. Tuesdays are the most expensive days to fly to Samos, and Saturdays are the most expensive days to return to Great Falls. Selecting flights on the least expensive days could save you up to $92 (1%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Saturday and returning a week later will cost an average of $6068. Return trip prices are from the SMI to GTF flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from GTF to SMI can generally find a 0-layover flight. Because there is a direct flight option the real-world direct flight time of 11 hour 48 minutes may be realistic.


Flight Hacking GTF to SMI

Flight hacking is when you book two tickets instead of a layover, sometimes with different airlines. You will need to either bring only a carry-on bag (highly recommended) or leave yourself plenty of time to go through security again. Flight hacking is completely allowed, but airlines don’t always tell you the cheapest way to get from GTF to SMI — but Champion Traveler does!

Hack #1: Munich (GTF > MUC > SMI)

  • Price for both tickets: $1381
  • Average savings: $4827 (77.75%)

See GTF to MUC flights

Hack #2: Warsaw (GTF > WAW > SMI)

  • Price for both tickets: $1703
  • Average savings: $4505 (72.57%)

See GTF to WAW flights

Hack #3: Milan (GTF > MXP > SMI)

  • Price for both tickets: $1749
  • Average savings: $4459 (71.82%)

See GTF to MXP flights


Flight Questions Answered

Still have questions about flying from GTF to SMI? We’ve got answers.

Which airlines fly this route?

You can find 14 major airlines flying this route most often: Air Canada, Air France, Alaska, American, British Airways, Delta, Eurowings, Finnair, Iberia, KLM, Lufthansa, Olympic, United, WestJet, and potentially more during busy seasons.

How far away is it from Samos Airport to Great Falls International Airport?

The distance between the two airports is roughly 6014 miles or 9679 kilometers.

How long does it take to fly from GTF to SMI?

The real-world flight time for a nonstop GTF to SMI flight is about 11 hour 48 minutes.

How many flights go between Great Falls, MT and Samos?

It depends on the day of the week and the date, but a typical day might have around 7 available flights from GTF to SMI.


Airport Location Info


Departing Airport

Origination code GTF
Origination airport name Great Falls International Airport
City Great Falls, MT
Country the United States
Latitude 47.5
Longitude -111.4

Return Airport

Destination code SMI
Destination airport name Samos Airport
City Samos
Country Greece
Latitude 37.7
Longitude 26.9


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.