HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
London

$623+ Cheap flights from Billings (BIL) 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 11/5. Fares are subject to change and may not be available on all flights or dates of travel.
BIL — LON
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Billings 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 Billings to London

Discover tips and strategies to find the most affordable flight options for your journey from Billings (BIL) 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 September 15, 2025.

Round-trip from

$623
(KLM)
From Billings Logan Intl to London (LON)
Search Deals

Find flight deals from Billings to London

Cheapest flights from Billings to London
Explore the most affordable flight options available from Billings to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

This KLM deal was found by Cheapflights users on 9/14. 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 11/511:45 amBIL - LHR
1 stop15h 15mMultiple Airlines
Wed 11/126:20 amLHR - BIL
2 stops18h 24mMultiple Airlines
Deal found 9/14$623
This KLM deal was found by Cheapflights users on 9/14. 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 10/111:33 amBIL - LHR
1 stop15h 17mKLM
Wed 10/811:45 amLHR - BIL
2 stops17h 40mKLM
Deal found 9/14$624
This Delta deal was found by Cheapflights users on 9/15. 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.
Thu 10/306:25 amBIL - LHR
1 stop18h 40mDelta
Thu 11/66:20 amLHR - BIL
2 stops23h 05mDelta
Deal found 9/15$673
This Virgin Atlantic deal was found by Cheapflights users on 9/15. 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.
Thu 10/306:25 amBIL - LHR
1 stop18h 40mVirgin Atlantic
Thu 11/610:45 amLHR - BIL
1 stop18h 40mVirgin Atlantic
Deal found 9/15$681
This Delta deal was found by Cheapflights users on 9/14. 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 10/16:19 pmBIL - LCY
2 stops15h 21mDelta
Wed 10/89:20 amLCY - BIL
2 stops20h 05mDelta
Deal found 9/14$681
This United Airlines deal was found by Cheapflights users on 9/15. 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 10/155:00 amBIL - LHR
2 stops21h 35mUnited Airlines
Sun 10/199:30 amLHR - BIL
2 stops32h 46mUnited Airlines
Deal found 9/15$720
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Thu 10/92:30 pmBIL - LHR
1 stop12h 10mUnited Airlines
Wed 10/153:50 pmLHR - BIL
2 stops35h 59mUnited Airlines
Deal found 9/15$727
This Air Canada deal was found by Cheapflights users on 9/14. 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 11/55:00 amBIL - LHR
3 stops18h 30mAir Canada
Wed 11/121:00 pmLHR - BIL
3 stops27h 46mAir Canada
Deal found 9/14$730
This Delta deal was found by Cheapflights users on 9/15. 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.
Thu 10/96:25 amBIL - LCY
2 stops19h 25mDelta
Wed 10/159:20 amLCY - BIL
2 stops20h 58mDelta
Deal found 9/15$891
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Thu 10/165:00 amBIL - LCY
3 stops20h 20mMultiple Airlines
Sun 10/195:50 pmLCY - BIL
3 stops33h 59mMultiple Airlines
Deal found 9/15$1,014
This Delta deal was found by Cheapflights users on 9/15. 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 10/156:25 amBIL - LCY
2 stops18h 45mDelta
Sun 10/191:45 pmLCY - BIL
2 stops15h 40mDelta
Deal found 9/15$1,407
This Delta deal was found by Cheapflights users on 9/15. 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.
Thu 10/1611:45 amBIL - LCY
2 stops21h 55mDelta
Sun 10/191:45 pmLCY - BIL
2 stops15h 40mDelta
Deal found 9/15$1,540

Cheapflights Fare Finder

 
Customize your flight search to find flights from Billings 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 September 15, 2025.
Use the filters below to find and compare flights from Billings to London that are best for you.

Fly from

Billings

Fly to

London

Route

Depart

Return

Price

BillingsLondon

BIL - LHR

BILLHR

Billings Logan Intl

Wed 11/5

11:45 am-10:00 am

1 stop15h 15m

London Heathrow

Wed 11/12

6:20 am-5:44 pm

2 stops18h 24m

$623

BillingsLondon

BIL - LHR

BILLHR

Billings Logan Intl

Wed 10/1

11:33 am-9:50 am

1 stop15h 17m

London Heathrow

Wed 10/8

11:45 am-10:25 pm

2 stops17h 40m

$624

BillingsLondon

BIL - LHR

BILLHR

Billings Logan Intl

Thu 10/30

6:25 am-7:05 am

1 stop18h 40m

London Heathrow

Thu 11/6

6:20 am-10:25 pm

2 stops23h 05m

$673

BillingsLondon

BIL - LHR

BILLHR

Billings Logan Intl

Thu 10/30

6:25 am-7:05 am

1 stop18h 40m

London Heathrow

Thu 11/6

10:45 am-10:25 pm

1 stop18h 40m

$681

BillingsLondon

BIL - LCY

BILLCY

Billings Logan Intl

Wed 10/1

6:19 pm-4:40 pm

2 stops15h 21m

London City

Wed 10/8

9:20 am-10:25 pm

2 stops20h 05m

$681

BillingsLondon

BIL - LHR

BILLHR

Billings Logan Intl

Wed 10/15

5:00 am-9:40 am

1 stop21h 40m

London Heathrow

Sun 10/19

9:30 am-11:16 am

2 stops32h 46m

$720

BillingsLondon

BIL - LCY

BILLCY

Billings Logan Intl

Thu 10/9

6:25 am-8:50 am

2 stops19h 25m

London City

Wed 10/15

9:20 am-11:18 pm

2 stops20h 58m

$891

BillingsLondon

BIL - LCY

BILLCY

Billings Logan Intl

Thu 10/16

5:00 am-8:20 am

3 stops20h 20m

London City

Sun 10/19

5:50 pm-8:49 pm

3 stops33h 59m

$1,014

BillingsLondon

BIL - LCY

BILLCY

Billings Logan Intl

Wed 10/15

6:25 am-8:10 am

2 stops18h 45m

London City

Sun 10/19

1:45 pm-10:25 pm

2 stops15h 40m

$1,407

BillingsLondon

BIL - LCY

BILLCY

Billings Logan Intl

Thu 10/16

11:45 am-4:40 pm

2 stops21h 55m

London City

Sun 10/19

1:45 pm-10:25 pm

2 stops15h 40m

$1,540

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 12 results
1
2

Best time to book a flight from Billings to London

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

Cheapflights Insights

Everything you need to know about your flight from Billings to London
No data available for this route at this time. Please check back soon.

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 September 15, 2025.
Peruse reviews from past customers who have flown with United Airlines from Billings to London to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,929 reviews

Comfort

7.3

Overall

7.4

Food

6.6

Boarding

7.7

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,929 reviews
United Airlines
7.4
Good
8,929 reviews

Comfort

7.3

Overall

7.4

Food

6.6

Boarding

7.7

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

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

    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. 1 airline have flights from Billings Logan Intl to London on a regular basis. Booking flights from Billings Logan Intl 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 Billings to London?

    For as low as $624, KLM can have you in London from Billings in 15h 17m. There are 4473 mi between Billings and London. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What is the cheapest airline to fly from Billings to London round-trip?

    According to our current data, United Airlines ($686), offers the cheapest pricing from Billings to London.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Billings to London (average of $661). Flying from Billings to London in June is currently the most expensive (average of $1,097). 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
Hounslow
Hayes
Southend-on-Sea
Harrow
Canterbury
Croydon
Eastleigh
Dartford
Dover
Winchester
Orpington
Gatwick
Borehamwood
Aylesbury
Bedford
Wembley
Folkestone
Chichester
Eastbourne
Sutton

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 London

Discover the top airline that operate flights from Billings 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 September 15, 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.