HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
London

$628+ 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 1/23. Fares are subject to change and may not be available on all flights or dates of travel.
HLN — LON
Jan 8 — Jan 151
Thu 1/8
Thu 1/15
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Helena to London with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Helena to London

Best flights from Helena to London
Discover carefully curated flight deals from Helena to London that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 9, 2025.

This United Airlines deal was found by Cheapflights users on 12/6. 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.
Fri 1/232:27 pmHLN - LHR
1 stop12h 13mUnited Airlines
Tue 1/276:35 amLHR - HLN
2 stops21h 51mUnited Airlines
Deal found 12/6$628
This Delta deal was found by Cheapflights users on 12/8. 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 5/2012:50 pmHLN - LCY
2 stops20h 50mDelta
Mon 5/259:20 amLCY - HLN
2 stops20h 14mDelta
Deal found 12/8$1,562
This United Airlines deal was found by Cheapflights users on 12/9. 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.
Wed 4/222:30 pmHLN - LHR
1 stop12h 10mUnited Airlines
Mon 4/274:25 pmLHR - HLN
2 stops35h 34mUnited Airlines
Deal found 12/9$823

Find 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 December 9, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$628
(United Airlines)
Provider with most accurate pricing for Helena-London (LON) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Helena-London (LON) flights.
Search Deals
From Helena to London (LON)
Search Deals

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 December 9, 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

Fri 1/23

2:27 pm-9:40 am

1 stop12h 13m

London Heathrow

Tue 1/27

6:35 am-9:26 pm

2 stops21h 51m

$628

HelenaLondon

HLN - LHR

HLNLHR

Helena

Wed 4/22

2:30 pm-9:40 am

1 stop12h 10m

London Heathrow

Mon 4/27

4:25 pm-8:59 pm

2 stops35h 34m

$823

HelenaLondon

HLN - LCY

HLNLCY

Helena

Wed 5/20

12:50 pm-4:40 pm

2 stops20h 50m

London City

Mon 5/25

9:20 am-10:34 pm

2 stops20h 14m

$1,562

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/6

  • Most accurate provider: When it comes to deals on Helena-London flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Helena-London flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Helena-London flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Helena-London flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Helena-London flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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, January is the cheapest month in which you can book a flight from Helena to London (average of $604). Flying from Helena to London in June is currently the most expensive (average of $1,155). 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.

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 December 9, 2025.
Read through reviews of airlines operating flights from Helena to London, such as United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,089 reviews

Entertainment

7.1

Crew

8.1

Comfort

7.3

Overall

7.4

Food

6.6

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
United Airlines
7.4
Good
9,089 reviews
United Airlines
7.4
Good
9,089 reviews

Entertainment

7.1

Crew

8.1

Comfort

7.3

Overall

7.4

Food

6.6

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.

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. 0 airlines 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.

  • How long is the flight from Helena to London?

    A quick flight from Helena to London can take about 12h 13m. United Airlines provides one of the quickest options available for as low as $628. The distance between Helena and London is about 4537 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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, January is the cheapest month in which you can book a flight from Helena to London (average of $604). Flying from Helena to London in June is currently the most expensive (average of $1,155). 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 London?

Book flights to London if you plan to visit one of these locations
Ilford
Hounslow
Southend-on-Sea
Harrow
Eastleigh
Dartford
Dover
Winchester
Croydon
Orpington
Watford
Hayes
Borehamwood
Aylesbury
Chipping Norton
Horley
Kingston upon Thames
Wembley
Folkestone
Eastbourne

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.