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$371+ Cheap flights from Montana to London (LON)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/25. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — LON
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
1 adult, Economy
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Cheap flight deals from Montana to London

Keep the following information in mind while searching for Montana to London flight deals. Data was last updated July 3, 2025.

Round-trip from

$567
(Delta)

One-way from

$378
(JetBlue)

Popular in

July

Cheapest in

February

Average price

$1,463
From Montana to London (LON)
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One-way flight from Montana to London (LON)
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Highest demand for flights based on searches. 24% potential increase in price ($299 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($50 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Montana to London

Cheapest flights from Montana to London
Explore the most affordable flight options available from Montana to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.

This Delta deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/95:30 amFCA - LGW
2 stops45h 30mDelta
Wed 8/2712:00 pmLGW - FCA
2 stops18h 53mDelta
Deal found 7/3$567
This Delta deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/612:00 pmFCA - LHR
1 stop14h 50mDelta
Wed 8/276:15 amLHR - FCA
2 stops23h 55mDelta
Deal found 7/3$586
This KLM deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/251:00 pmHLN - LHR
2 stops17h 30mKLM
Tue 9/28:55 pmLHR - HLN
2 stops32h 18mKLM
Deal found 7/3$592
This SmartFares deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/1711:28 amBZN - LHR
1 stop18h 42mVirgin Atlantic
Tue 9/210:55 amLHR - BZN
1 stop19h 18mVirgin Atlantic
Deal found 7/3$595
This Delta deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/255:50 amHLN - LHR
1 stop21h 00mDelta
Tue 9/210:55 amLHR - HLN
1 stop18h 18mDelta
Deal found 7/3$595
This Delta deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/1712:00 pmBZN - LHR
1 stop19h 15mDelta
Tue 9/29:00 amLHR - BZN
2 stops20h 26mDelta
Deal found 7/3$625
This KLM deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/173:35 pmMSO - LHR
1 stop14h 35mKLM
Sun 8/2410:55 amLHR - MSO
1 stop13h 49mKLM
Deal found 7/3$635
This Air France deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/72:45 pmFCA - LHR
1 stop15h 25mMultiple Airlines
Tue 8/266:15 amLHR - FCA
2 stops18h 16mMultiple Airlines
Deal found 7/3$636
This KLM deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/72:45 pmFCA - LHR
1 stop15h 25mKLM
Wed 8/2711:45 amLHR - FCA
2 stops18h 25mKLM
Deal found 7/3$638
This Virgin Atlantic deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/173:35 pmMSO - LHR
1 stop14h 35mVirgin Atlantic
Sun 8/241:35 pmLHR - MSO
2 stops17h 40mVirgin Atlantic
Deal found 7/3$649
This Booking.com deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/225:57 pmBIL - LHR
2 stops29h 33mMultiple Airlines
Sat 10/47:25 amLHR - BIL
2 stops20h 24mMultiple Airlines
Deal found 7/3$680
This Delta deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/175:25 amBIL - LHR
2 stops24h 45mDelta
Sun 8/246:30 amLHR - BIL
2 stops23h 42mDelta
Deal found 7/3$681

Cheapflights Fare Finder

Customize your flight search to find flights from Montana to London that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 3, 2025.
Use the filters below to find and compare flights from Montana to London that are best for you.

Fly from

Montana

Fly to

London

Route

Depart

Return

Price

KalispellLondon

FCA - LGW

FCALGW

Kalispell Glacier Park

Sat 8/9

5:30 am-10:00 am

2 stops45h 30m

London Gatwick

Wed 8/27

12:00 pm-11:53 pm

2 stops18h 53m

$567

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Wed 8/6

12:00 pm-9:50 am

1 stop14h 50m

London Heathrow

Wed 8/27

6:15 am-11:10 pm

2 stops23h 55m

$586

HelenaLondon

HLN - LHR

HLNLHR

Helena

Mon 8/25

1:00 pm-1:30 pm

2 stops17h 30m

London Heathrow

Tue 9/2

8:55 pm-10:13 pm

2 stops32h 18m

$592

BozemanLondon

BZN - LHR

BZNLHR

Bozeman Gallatin Field

Sun 8/17

11:28 am-1:10 pm

1 stop18h 42m

London Heathrow

Tue 9/2

10:55 am-11:13 pm

1 stop19h 18m

$595

HelenaLondon

HLN - LHR

HLNLHR

Helena

Mon 8/25

5:50 am-9:50 am

1 stop21h 00m

London Heathrow

Tue 9/2

10:55 am-10:13 pm

1 stop18h 18m

$595

BozemanLondon

BZN - LHR

BZNLHR

Bozeman Gallatin Field

Sun 8/17

12:00 pm-2:15 pm

1 stop19h 15m

London Heathrow

Tue 9/2

9:00 am-10:26 pm

2 stops20h 26m

$625

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

Sun 8/17

3:35 pm-1:10 pm

1 stop14h 35m

London Heathrow

Sun 8/24

10:55 am-5:44 pm

1 stop13h 49m

$635

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Thu 8/7

2:45 pm-1:10 pm

1 stop15h 25m

London Heathrow

Tue 8/26

6:15 am-5:31 pm

2 stops18h 16m

$636

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Thu 8/7

2:45 pm-1:10 pm

1 stop15h 25m

London Heathrow

Wed 8/27

11:45 am-11:10 pm

2 stops18h 25m

$638

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

Sun 8/17

3:35 pm-1:10 pm

1 stop14h 35m

London Heathrow

Sun 8/24

1:35 pm-12:15 am

2 stops17h 40m

$649

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/3

Showing 1-10 of 43 results
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Best time to book a flight from Montana to London

Have a flexible travel schedule? Discover the best time to fly to London from Montana with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Montana to London

What is the cheapest month to book a flight from Montana to London?

Currently, November is the cheapest month in which you can book a flight from Montana to London (average of $661). Flying from Montana to London in June is currently the most expensive (average of $1,098). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost to fly round-trip from Montana to London?

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to London. Reviews last updated July 3, 2025.
Read reviews from past customers who have flown Delta, Alaska Airlines, and KLM from Montana to London. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,982 reviews

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,982 reviews
Delta
8.0
Very good
7,982 reviews

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Alaska Airlines
8.0
Very good
10,000 reviews
Delta
8.0
Very good
7,982 reviews

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,367 reviews
Delta
8.0
Very good
7,982 reviews

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air France
7.5
Good
1,465 reviews
Delta
8.0
Very good
7,982 reviews

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
SWISS
7.5
Good
1,654 reviews
Delta
8.0
Very good
7,982 reviews

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Montana to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines to fly from Montana to London one-way?

    To fly one-way, consider booking your trip with JetBlue, which is currently one of the cheapest options available, starting at $378. Delta flights start at $458 while deals on United Airlines start at $464 one-way.

  • What are the most popular routes from Montana to London?

    Most travelers choose Bozeman Gallatin Field - London Heathrow, Kalispell Glacier Park - London Heathrow or Bozeman Gallatin Field - London City when deciding on the best route from Montana to London.

  • Can I find deals for flights from Montana to London that include hotel bookings?

    Yes. In addition to deals on Montana to London flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Montana to London?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Montana to London.

  • Can I find deals for business class flights from Montana to London?

    Yes. Cheapflights offers flight deals from Montana to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Montana to London?

    Currently, November is the cheapest month in which you can book a flight from Montana to London (average of $661). Flying from Montana to London in June is currently the most expensive (average of $1,098). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Montana?

Book flights to Montana if you plan to visit one of these locations
Hounslow
Hayes
Thornton Heath
Canterbury
Harrow
Dover
Gatwick
Orpington
Watford
Croydon
Folkestone
Borehamwood
Aylesbury
Chelmsford
Brentwood
Chichester
Arundel
Milton Keynes
Bishop's Stortford
Dartford

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Alternative routes for Montana to London

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Montana to London

Discover the top 2 airlines that operate flights from Montana to London. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$622Average$802FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$669Average$875FlexibilityNo cancel feeOn-time69%

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