
Keep the following information in mind while searching for Montana to Heathrow flight deals. Data was last updated November 11, 2026.
Most accurate provider | AranGrant 3 stars |
|---|---|
Most trusted provider | AranGrant 3 stars |
Round-trip from | $764 (United Airlines) |
One-way from | $629 (United Airlines) |
Popular in | February |
Cheapest in | April |
Average price | $1,000 |
Fly from
Fly to
Route
Depart
Return
BillingsLondon
BIL Billings Logan Intl - LHR London Heathrow
BILLHR
Billings Logan Intl
Wed 11/25
2:42 pm-9:40 am
1 stop11h 58m
London Heathrow
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
BillingsLondon
BIL Billings Logan Intl - LHR London Heathrow
BILLHR
Billings Logan Intl
Wed 11/25
7:00 am-6:30 am
3 stops16h 30m
London Heathrow
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
BillingsLondon
BIL Billings Logan Intl - LHR London Heathrow
BILLHR
Billings Logan Intl
Tue 3/2
5:53 pm-7:40 am
2 stops30h 47m
London Heathrow
Fri 3/5
7:30 am-8:51 pm
2 stops20h 21m
Great FallsLondon
GTF Great Falls - LHR London Heathrow
GTFLHR
Great Falls
Tue 3/2
6:30 am-6:40 am
2 stops17h 10m
London Heathrow
Thu 3/4
6:35 am-9:34 pm
2 stops21h 59m
HelenaLondon
HLN Helena - LHR London Heathrow
HLNLHR
Helena
Tue 3/2
2:36 pm-9:40 am
1 stop12h 04m
London Heathrow
Thu 3/4
7:30 am-8:59 pm
2 stops20h 29m
ButteLondon
BTM Butte Silver Bow Co - LHR London Heathrow
BTMLHR
Butte Silver Bow Co
Tue 3/2
9:30 am-7:10 am
2 stops38h 40m
London Heathrow
Fri 3/5
6:35 am-6:38 pm
2 stops19h 03m
BozemanLondon
BZN Bozeman Gallatin Field - LHR London Heathrow
BZNLHR
Bozeman Gallatin Field
Sun 2/14
2:44 pm-9:40 am
1 stop11h 56m
London Heathrow
Thu 2/18
6:50 am-6:49 pm
2 stops18h 59m
MissoulaLondon
MSO Missoula Johnson-Bell Field - LHR London Heathrow
MSOLHR
Missoula Johnson-Bell Field
Tue 3/9
12:50 pm-10:00 am
1 stop14h 10m
London Heathrow
Tue 3/16
5:50 pm-5:27 pm
2 stops29h 37m
KalispellLondon
FCA Kalispell Glacier Park - LHR London Heathrow
FCALHR
Kalispell Glacier Park
Wed 3/31
1:25 pm-10:00 am
1 stop13h 35m
London Heathrow
Tue 4/27
7:15 pm-5:45 pm
2 stops29h 30m
BillingsLondon
BIL Billings Logan Intl - LHR London Heathrow
BILLHR
Billings Logan Intl
Sat 2/13
5:53 pm-7:40 am
2 stops30h 47m
London Heathrow
Tue 2/23
6:35 am-9:28 pm
2 stops21h 53m
Everything you need to know about your flight from Montana to London Heathrow Airport
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| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$556 | Average$1,138 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$604 | Average$1,682 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$897 | Average$1,112 | FlexibilityNo cancel fee | On-time75% |