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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 May , June 2026

29 May - 19 Jun $ 1,098.00
GTF
Great Falls
Allegiant Air
3 STOPS
LIS
Lisbon
LIS
Lisbon
Allegiant Air
3 STOPS
GTF
Great Falls
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23 May - 10 Jun $ 1,369.00
GTF
Great Falls
United Airlines
2 STOPS
LIS
Lisbon
LIS
Lisbon
United Airlines
2 STOPS
GTF
Great Falls
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23 May - 10 Jun $ 1,380.00
GTF
Great Falls
United Airlines
2 STOPS
LIS
Lisbon
LIS
Lisbon
United Airlines
2 STOPS
GTF
Great Falls
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Last minute flights from Great Falls to Lisbon

29 May - 01 Jun $ 1,782.00
GTF
Great Falls
Alaska Airlines
3 STOPS
LIS
Lisbon
LIS
Lisbon
Alaska Airlines
3 STOPS
GTF
Great Falls
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27 May - 01 Jun $ 2,013.00
GTF
Great Falls
Alaska Airlines
2 STOPS
LIS
Lisbon
LIS
Lisbon
Alaska Airlines
2 STOPS
GTF
Great Falls
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23 May - 01 Jun $ 2,078.00
GTF
Great Falls
Alaska Airlines
2 STOPS
LIS
Lisbon
LIS
Lisbon
Alaska Airlines
2 STOPS
GTF
Great Falls
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One-way flights to Lisbon from Great Falls

6:52 PM - 6:45 AM
Norwegian Air Sweden
3 Stops
31h 43m
GTF - LIS
$ 679
Kiwi
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2:37 PM - 8:25 PM
United Airlines
2 Stops
34h 43m
GTF - LIS
$ 856
Kiwi
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6:15 AM - 8:25 PM
United Airlines
2 Stops
19h 5m
GTF - LIS
$ 921
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.