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

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1 Adults (11+)
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 October , November 2026

23 Oct - 19 Nov $ 1,074.00
GTF
Great Falls
Alaska Airlines
2 STOPS
LIS
Lisbon
LIS
Lisbon
Alaska Airlines
3 STOPS
GTF
Great Falls
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23 Oct - 19 Nov $ 1,094.00
GTF
Great Falls
Alaska Airlines
2 STOPS
LIS
Lisbon
LIS
Lisbon
Alaska Airlines
3 STOPS
GTF
Great Falls
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23 Oct - 19 Nov $ 1,130.00
GTF
Great Falls
Alaska Airlines
2 STOPS
LIS
Lisbon
LIS
Lisbon
Alaska Airlines
3 STOPS
GTF
Great Falls
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Last minute flights from Great Falls to Lisbon

23 Oct - 01 Nov $ 1,609.00
GTF
Great Falls
Alaska Airlines
2 STOPS
LIS
Lisbon
LIS
Lisbon
Alaska Airlines
3 STOPS
GTF
Great Falls
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23 Oct - 01 Nov $ 1,624.00
GTF
Great Falls
Alaska Airlines
2 STOPS
LIS
Lisbon
LIS
Lisbon
Alaska Airlines
3 STOPS
GTF
Great Falls
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23 Oct - 01 Nov $ 1,680.00
GTF
Great Falls
Alaska Airlines
2 STOPS
LIS
Lisbon
LIS
Lisbon
Alaska Airlines
3 STOPS
GTF
Great Falls
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One-way flights to Lisbon from Great Falls

5:15 PM - 7:35 PM
TAP Portugal
2 Stops
38h 30m
GTF - LIS
$ 532
Kiwi
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5:15 PM - 9:35 PM
TAP Portugal
2 Stops
33h 25m
GTF - LIS
$ 588
Kiwi
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5:15 PM - 4:30 PM
TAP Portugal
2 Stops
20h 5m
GTF - LIS
$ 838
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.