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Cheap flights from Great Falls (GTF) to Lisbon (LIS)

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0 Children (2~11)
0 Infants (0~2)
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How to find the cheapest flight from Great Falls (GTF) to Lisbon (LIS)

How to find the cheapest flight from Great Falls (GTF) to Lisbon (LIS)
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How to find the cheapest flight from Great Falls (GTF) to Lisbon (LIS)
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How to find the cheapest flight from Great Falls (GTF) to Lisbon (LIS)
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Cheap flights from Great Falls to Lisbon in June , July 2026

30 Jun - 24 Jul $ 1,983.00
GTF
Great Falls
Allegiant Air
2 STOPS
LIS
Lisbon
LIS
Lisbon
Allegiant Air
2 STOPS
GTF
Great Falls
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30 Jun - 24 Jul $ 2,015.00
GTF
Great Falls
Allegiant Air
2 STOPS
LIS
Lisbon
LIS
Lisbon
Allegiant Air
2 STOPS
GTF
Great Falls
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30 Jun - 24 Jul $ 2,028.00
GTF
Great Falls
Allegiant Air
2 STOPS
LIS
Lisbon
LIS
Lisbon
Allegiant Air
2 STOPS
GTF
Great Falls
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Last minute flights from Great Falls to Lisbon

29 Jun - 02 Jul $ 4,911.00
GTF
Great Falls
Alaska Airlines
3 STOPS
LIS
Lisbon
LIS
Lisbon
Alaska Airlines
3 STOPS
GTF
Great Falls
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29 Jun - 02 Jul $ 5,636.00
GTF
Great Falls
Alaska Airlines
3 STOPS
LIS
Lisbon
LIS
Lisbon
Alaska Airlines
3 STOPS
GTF
Great Falls
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29 Jun - 01 Jul $ 6,466.00
GTF
Great Falls
Alaska Airlines
3 STOPS
LIS
Lisbon
LIS
Lisbon
Alaska Airlines
3 STOPS
GTF
Great Falls
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One-way flights to Lisbon from Great Falls

5:09 PM - 9:50 AM
SATA Azores Airlines
3 Stops
36h 56m
GTF - LIS
$ 1,125
Kiwi
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5:09 PM - 7:50 PM
TAP Portugal
2 Stops
22h 31m
GTF - LIS
$ 1,225
Kiwi
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5:09 PM - 6:45 PM
TAP Portugal
2 Stops
21h 26m
GTF - LIS
$ 1,257
Kiwi
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How to find the cheapest flight from Great Falls (GTF) to Lisbon (LIS)

Related info for your journey
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How to find the cheapest flight from Great Falls (GTF) to Lisbon (LIS)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Great Falls (GTF) to Lisbon (LIS)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.