HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Heathrow

$663+ Cheap flights from Billings (BIL) to Heathrow (LHR)

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 10/1. Fares are subject to change and may not be available on all flights or dates of travel.
BIL — LHR
Jul 19 — Jul 261
Sat 7/19
Sat 7/26
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Billings to Heathrow 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 Billings to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Billings (BIL) to Heathrow (LHR). 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 July 14, 2025.

Round-trip from

$663
(KLM)

Popular in

July

Cheapest in

February

Average price

$1,515
From Billings Logan Intl to London Heathrow
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($177 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($56 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

Find flight deals from Billings to Heathrow

Cheapest flights from Billings to Heathrow
Explore the most affordable flight options available from Billings to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 14, 2025.

This KLM deal was found by Cheapflights users on 7/13. 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.
Wed 10/16:19 pmBIL - LHR
2 stops14h 56mKLM
Thu 10/1610:55 amLHR - BIL
1 stop18h 37mKLM
Deal found 7/13$663
This United Airlines deal was found by Cheapflights users on 7/13. 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 10/15:00 amBIL - LHR
2 stops18h 30mUnited Airlines
Thu 10/163:50 pmLHR - BIL
2 stops28h 28mUnited Airlines
Deal found 7/13$735
This Mytrip deal was found by Cheapflights users on 7/13. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/17:00 amBIL - LHR
2 stops20h 00mMultiple Airlines
Thu 10/168:25 pmLHR - BIL
2 stops31h 24mMultiple Airlines
Deal found 7/13$744
This American Airlines deal was found by Cheapflights users on 7/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/16:02 amBIL - LHR
1 stop18h 18mAmerican Airlines
Thu 10/168:20 amLHR - BIL
1 stop20h 39mAmerican Airlines
Deal found 7/13$752
This Air Canada deal was found by Cheapflights users on 7/13. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/17:00 amBIL - LHR
3 stops16h 30mAir Canada
Thu 10/1612:05 pmLHR - BIL
3 stops17h 41mAir Canada
Deal found 7/13$1,157
This Cheapflightsfares deal was found by Cheapflights users on 7/12. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/62:30 pmBIL - LHR
1 stop14h 50mLufthansa
Wed 10/156:55 amLHR - BIL
2 stops20h 54mLufthansa
Deal found 7/12$3,785

Cheapflights Fare Finder

Customize your flight search to find flights from Billings to Heathrow 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 14, 2025.
Use the filters below to find and compare flights from Billings to London Heathrow Airport that are best for you.

Fly from

Billings

Fly to

Heathrow

Route

Depart

Return

Price

BillingsLondon

BIL - LHR

BILLHR

Billings Logan Intl

Wed 10/1

6:19 pm-4:15 pm

2 stops14h 56m

London Heathrow

Thu 10/16

10:55 am-10:32 pm

1 stop18h 37m

$663

BillingsLondon

BIL - LHR

BILLHR

Billings Logan Intl

Wed 10/1

5:00 am-6:30 am

2 stops18h 30m

London Heathrow

Thu 10/16

3:50 pm-1:18 pm

2 stops28h 28m

$735

BillingsLondon

BIL - LHR

BILLHR

Billings Logan Intl

Wed 10/1

7:00 am-10:00 am

2 stops20h 00m

London Heathrow

Thu 10/16

8:25 pm-8:49 pm

2 stops31h 24m

$744

BillingsLondon

BIL - LHR

BILLHR

Billings Logan Intl

Wed 10/1

6:02 am-7:20 am

1 stop18h 18m

London Heathrow

Thu 10/16

8:20 am-9:59 pm

1 stop20h 39m

$752

BillingsLondon

BIL - LHR

BILLHR

Billings Logan Intl

Wed 10/1

7:00 am-6:30 am

3 stops16h 30m

London Heathrow

Thu 10/16

12:05 pm-10:46 pm

3 stops17h 41m

$1,157

BillingsLondon

BIL - LHR

BILLHR

Billings Logan Intl

Mon 10/6

2:30 pm-12:20 pm

1 stop14h 50m

London Heathrow

Wed 10/15

6:55 am-8:49 pm

2 stops20h 54m

$3,785

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/13

Best time to book a flight from Billings to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Billings 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.

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. 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 Heathrow. Reviews last updated July 14, 2025.
Read reviews from past customers who have flown KLM, United Airlines, and American Airlines from Billings to London Heathrow Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,372 reviews

Entertainment

7.1

Overall

7.8

Crew

8.4

Boarding

7.8

Comfort

7.7

Food

7.3

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
KLM
7.8
Good
1,372 reviews
KLM
7.8
Good
1,372 reviews

Entertainment

7.1

Overall

7.8

Crew

8.4

Boarding

7.8

Comfort

7.7

Food

7.3

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
United Airlines
7.4
Good
8,858 reviews
KLM
7.8
Good
1,372 reviews

Entertainment

7.1

Overall

7.8

Crew

8.4

Boarding

7.8

Comfort

7.7

Food

7.3

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
American Airlines
7.2
Good
10,000 reviews
KLM
7.8
Good
1,372 reviews

Entertainment

7.1

Overall

7.8

Crew

8.4

Boarding

7.8

Comfort

7.7

Food

7.3

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
Air Canada
7.1
Good
9,725 reviews
KLM
7.8
Good
1,372 reviews

Entertainment

7.1

Overall

7.8

Crew

8.4

Boarding

7.8

Comfort

7.7

Food

7.3

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
Lufthansa
6.8
Okay
7,208 reviews
KLM
7.8
Good
1,372 reviews

Entertainment

7.1

Overall

7.8

Crew

8.4

Boarding

7.8

Comfort

7.7

Food

7.3

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Related info for your journey

Find useful and relevant information for your journey from Billings to Heathrow. 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 Billings to London Heathrow?

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

  • What are the cheapest airlines flying from Billings to London Heathrow Airport round-trip?

    KLM, at $663, was found to be the cheapest airline from Billings to London Heathrow Airport.Alternate airlines to your destination round-trip include United Airlines and American Airlines. You may be able to fly from Billings to London Heathrow Airport for 34% less than the average price by searching for these airlines.

  • Can I find deals for flights from Billings to Heathrow that include hotel bookings?

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

  • How can I find direct flights from Billings to Heathrow?

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

  • Can I find deals for business class flights from Billings to Heathrow?

    Yes. Cheapflights offers flight deals from Billings to Heathrow 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 Billings to London Heathrow Airport?

    Currently, November is the cheapest month in which you can book a flight from Billings to London Heathrow Airport (average of $661). Flying from Billings to London Heathrow Airport in June is currently the most expensive (average of $1,095). 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 Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Hounslow
Hayes
Thornton Heath
Harrow
Canterbury
Dover
Stratford-upon-Avon
Gatwick
Orpington
Watford
Northampton
Croydon
Borehamwood
Broadway
Aylesbury
Chelmsford
Folkestone
Chichester
Southend-on-Sea
Swindon

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 Billings to Heathrow

Discover the top airline that operate flights from Billings to Heathrow. 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 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$686Average$813FlexibilityNo cancel feeOn-time69%

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.