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$728+ Cheap flights from Helena (HLN) to London (LON)

This is the cheapest round-trip 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.
HLN — LON
jun. 17 — jun. 241
mar. 6/17
mar. 6/24
1 adult, Economy
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Cheap flight deals from Helena to London

Discover tips and strategies to find the most affordable flight options for your journey from Helena (HLN) to London (LON). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated junio 12, 2025.

Round-trip from

$728
(United Airlines)
From Helena to London (LON)
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Find flight deals from Helena to London

Cheapest flights from Helena to London
Explore the most affordable flight options available from Helena to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on junio 12, 2025.

This United Airlines deal was found by Cheapflights users on 6/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 8/252:30 pmHLN - LHR
1 stop12h 10mUnited Airlines
mar. 9/22:05 pmLHR - HLN
2 stops38h 06mUnited Airlines
Deal found 6/10$728
This Air France deal was found by Cheapflights users on 6/10. 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.
vie. 9/1912:50 pmHLN - LHR
2 stops18h 25mAir France
mar. 10/710:55 amLHR - HLN
2 stops18h 42mAir France
Deal found 6/10$855
This Delta deal was found by Cheapflights users on 6/10. 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.
sáb. 9/205:40 amHLN - LHR
2 stops24h 30mDelta
dom. 10/53:45 pmLHR - HLN
2 stops27h 39mDelta
Deal found 6/10$905
This KLM deal was found by Cheapflights users on 6/10. 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.
lun. 9/2212:50 pmHLN - LHR
2 stops18h 25mKLM
lun. 10/67:15 pmLHR - HLN
2 stops34h 22mKLM
Deal found 6/10$941
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 9/144:02 pmHLN - LHR
2 stops21h 18mMultiple Airlines
vie. 9/194:30 pmLHR - HLN
1 stop29h 51mMultiple Airlines
Deal found 6/11$1,300
This Travelocity deal was found by Cheapflights users on 6/11. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/154:02 pmHLN - LCY
2 stops18h 28mMultiple Airlines
dom. 9/215:50 pmLCY - HLN
2 stops52h 31mMultiple Airlines
Deal found 6/11$1,326
This KLM deal was found by Cheapflights users on 6/11. 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.
sáb. 9/1312:50 pmHLN - LCY
2 stops17h 25mKLM
vie. 9/1910:00 amLCY - HLN
2 stops19h 37mKLM
Deal found 6/11$2,286

Cheapflights Fare Finder

Customize your flight search to find flights from Helena 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 junio 12, 2025.
Use the filters below to find and compare flights from Helena to London that are best for you.

Fly from

Helena

Fly to

London

Route

Depart

Return

Price

HelenaLondon

HLN - LHR

HLNLHR

Helena

lun. 8/25

2:30 pm-9:40 am

1 stop12h 10m

London Heathrow

mar. 9/2

2:05 pm-9:11 pm

2 stops38h 06m

$728

HelenaLondon

HLN - LHR

HLNLHR

Helena

vie. 9/19

12:50 pm-2:15 pm

2 stops18h 25m

London Heathrow

mar. 10/7

10:55 am-10:37 pm

2 stops18h 42m

$855

HelenaLondon

HLN - LHR

HLNLHR

Helena

sáb. 9/20

5:40 am-1:10 pm

2 stops24h 30m

London Heathrow

dom. 10/5

3:45 pm-12:24 pm

2 stops27h 39m

$905

HelenaLondon

HLN - LHR

HLNLHR

Helena

lun. 9/22

12:50 pm-2:15 pm

2 stops18h 25m

London Heathrow

lun. 10/6

7:15 pm-10:37 pm

2 stops34h 22m

$941

HelenaLondon

HLN - LHR

HLNLHR

Helena

dom. 9/14

4:02 pm-8:20 pm

2 stops21h 18m

London Heathrow

vie. 9/19

4:30 pm-3:21 pm

1 stop29h 51m

$1,300

HelenaLondon

HLN - LCY

HLNLCY

Helena

lun. 9/15

4:02 pm-5:30 pm

2 stops18h 28m

London City

dom. 9/21

5:50 pm-3:21 pm

2 stops52h 31m

$1,326

HelenaLondon

HLN - LCY

HLNLCY

Helena

sáb. 9/13

12:50 pm-1:15 pm

2 stops17h 25m

London City

vie. 9/19

10:00 am-10:37 pm

2 stops19h 37m

$2,286

HelenaLondon

HLN - LHR

HLNLHR

Helena

mar. 6/17

5:44 am-8:55 am

2 stops20h 11m

$1,038

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Best time to book a flight from Helena to London

Have a flexible travel schedule? Discover the best time to fly to London from Helena 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 Helena to London

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

Currently, November is the cheapest month in which you can book a flight from Helena to London (average of $661). Flying from Helena to London in June is currently the most expensive (average of $1,108). 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.

Rainfall in London by month

Plan your trip to London by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit London when rainfall is around 1.6 in.

Temperature in London by month

Plan your trip to London by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

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 junio 12, 2025.
Read through reviews of airlines operating flights from Helena to London, such as Delta, KLM and Air France. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,946 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Crew

8.5

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
7,946 reviews
Delta
8.0
Very good
7,946 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Crew

8.5

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
1,358 reviews
Delta
8.0
Very good
7,946 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Crew

8.5

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
1,463 reviews
Delta
8.0
Very good
7,946 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Crew

8.5

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!
United Airlines
7.4
Good
8,790 reviews
Delta
8.0
Very good
7,946 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Crew

8.5

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 Helena to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Helena to London?

    Helena (HLN), located 2.7 mi from the city center, is the airport you fly out of when you book flights from Helena to London. 1 airline have flights from Helena to London on a regular basis. Booking flights from Helena to London should not be difficult; the airport handles an average of 0 outbound flights to London per day.

  • What are the cheapest airlines flying from Helena to London round-trip?

    Currently priced at $728, United Airlines will fly you from Helena to London and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Air France and Delta - these airlines can fly you to your destination from $855 and $905, respectively.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Helena 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 Helena to London?

    Currently, November is the cheapest month in which you can book a flight from Helena to London (average of $661). Flying from Helena to London in June is currently the most expensive (average of $1,108). 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 Helena?

Book flights to Helena if you plan to visit one of these locations
Hayes
Hounslow
Thornton Heath
Luton
Canterbury
Harrow
Dover
Gatwick
Orpington
Watford
Croydon
Folkestone
Borehamwood
Sutton
Aylesbury
Chelmsford
Brentwood
Chichester
Wembley
Arundel

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top airline flying from Helena to London

Discover the top airline that operate flights from Helena 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 junio 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$655Average$877FlexibilityNo cancel feeOn-time69%

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