Earn point on your loyalty program!arrow arc left

Cheap flights from Great Falls (GTF) to London (LCY)

Know your dates, get live prices in seconds
airplane logo

pin logo

calendar
Departure
calendar backward
Return
airplane logo
1 Adults (11+)
0 Children (2~11)
0 Infants (0~2)
Save up to 31%
Book Flight + Hotel at the same time

How to find the cheapest flight from Great Falls (GTF) to London (LCY)

How to find the cheapest flight from Great Falls (GTF) to London (LCY)
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 London (LCY)
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 London (LCY)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.

Cheap flights from Great Falls to London in July , August 2026

28 Jul - 28 Aug $ 1,797.00
GTF
Great Falls
Alaska Airlines
3 STOPS
LCY
London
LCY
London
Alaska Airlines
3 STOPS
GTF
Great Falls
Pick dates
28 Jul - 14 Aug $ 1,801.00
GTF
Great Falls
Allegiant Air
3 STOPS
LCY
London
LCY
London
Allegiant Air
3 STOPS
GTF
Great Falls
Pick dates
28 Jul - 25 Aug $ 1,831.00
GTF
Great Falls
Alaska Airlines
3 STOPS
LCY
London
LCY
London
Alaska Airlines
3 STOPS
GTF
Great Falls
Pick dates

Last minute flights from Great Falls to London

28 Jul - 01 Aug $ 2,905.00
GTF
Great Falls
Alaska Airlines
3 STOPS
LCY
London
LCY
London
Alaska Airlines
3 STOPS
GTF
Great Falls
Pick dates
28 Jul - 01 Aug $ 2,926.00
GTF
Great Falls
Alaska Airlines
3 STOPS
LCY
London
LCY
London
Alaska Airlines
3 STOPS
GTF
Great Falls
Pick dates
28 Jul - 01 Aug $ 2,963.00
GTF
Great Falls
Alaska Airlines
3 STOPS
LCY
London
LCY
London
Alaska Airlines
3 STOPS
GTF
Great Falls
Pick dates

One-way flights to London from Great Falls

5:09 PM - 8:15 PM
ITA Airways
3 Stops
44h 56m
GTF - LCY
$ 812
Kiwi
Pick dates
1:17 PM - 5:15 PM
KLM Royal Dutch Airlines
2 Stops
21h 3m
GTF - LCY
$ 1,042
Kiwi
Pick dates
1:17 PM - 7:45 PM
KLM Royal Dutch Airlines
2 Stops
23h 28m
GTF - LCY
$ 1,042
Kiwi
Pick dates

How to find the cheapest flight from Great Falls (GTF) to London (LCY)

Related info for your journey
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 London (LCY)
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 London (LCY)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.