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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 April , May 2026

27 Apr - 11 May $ 1,082.00
GTF
Great Falls
Allegiant Air
3 STOPS
LIS
Lisbon
LIS
Lisbon
Allegiant Air
3 STOPS
GTF
Great Falls
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27 Apr - 11 May $ 1,094.00
GTF
Great Falls
Allegiant Air
3 STOPS
LIS
Lisbon
LIS
Lisbon
Allegiant Air
3 STOPS
GTF
Great Falls
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20 Apr - 11 May $ 1,166.00
GTF
Great Falls
Allegiant Air
3 STOPS
LIS
Lisbon
LIS
Lisbon
Allegiant Air
3 STOPS
GTF
Great Falls
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Last minute flights from Great Falls to Lisbon

17 Apr - 01 May $ 1,291.00
GTF
Great Falls
Allegiant Air
2 STOPS
LIS
Lisbon
LIS
Lisbon
Allegiant Air
2 STOPS
GTF
Great Falls
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27 Apr - 01 May $ 1,596.00
GTF
Great Falls
Allegiant Air
3 STOPS
LIS
Lisbon
LIS
Lisbon
Allegiant Air
3 STOPS
GTF
Great Falls
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27 Apr - 01 May $ 1,599.00
GTF
Great Falls
Allegiant Air
3 STOPS
LIS
Lisbon
LIS
Lisbon
Allegiant Air
3 STOPS
GTF
Great Falls
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One-way flights to Lisbon from Great Falls

11:42 AM - 8:05 PM
KLM Royal Dutch Airlines
3 Stops
37h 18m
GTF - LIS
$ 603
Kiwi
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11:42 AM - 9:30 PM
Swiss International Air Lines
3 Stops
28h 43m
GTF - LIS
$ 616
Kiwi
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11:42 AM - 8:45 PM
Air France
3 Stops
27h 43m
GTF - LIS
$ 688
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.