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Cheap flights from Billings to London Heathrow

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      Compare Billings to London Heathrow flight deals

      Find the cheapest month or even day of the year to fly to London Heathrow

      Book the best London Heathrow fare with no extra fees

      Flight deals from Billings to London Heathrow

      Looking for a cheap last-minute deal or the best round-trip flight from Billings Airport to London Heathrow Airport? If you want to travel next month, round-trip fares start from $756. Find the lowest prices on one-way and round-trip tickets right here.
      London.$741 per passenger.Departing Mon, Sep 28, returning Tue, Oct 13.Round-trip flight with Alaska Airlines.Outbound indirect flight with Alaska Airlines, departing from Billings on Mon, Sep 28, arriving in London Heathrow.Inbound indirect flight with Alaska Airlines, departing from London Heathrow on Tue, Oct 13, arriving in Billings.Price includes taxes and charges.From $741, select.
      London.$744 per passenger.Departing Wed, Nov 4, returning Wed, Nov 11.Round-trip flight with Delta.Outbound indirect flight with Delta, departing from Billings on Wed, Nov 4, arriving in London Heathrow.Inbound indirect flight with Delta, departing from London Heathrow on Wed, Nov 11, arriving in Billings.Price includes taxes and charges.From $744, select.
      London.$744 per passenger.Departing Tue, Oct 27, returning Tue, Nov 3.Round-trip flight with Delta.Outbound indirect flight with Delta, departing from Billings on Tue, Oct 27, arriving in London Heathrow.Inbound indirect flight with Delta, departing from London Heathrow on Tue, Nov 3, arriving in Billings.Price includes taxes and charges.From $744, select.
      London.$756 per passenger.Departing Mon, Oct 5, returning Tue, Oct 13.Round-trip flight with Delta.Outbound indirect flight with Delta, departing from Billings on Mon, Oct 5, arriving in London Heathrow.Inbound indirect flight with Delta, departing from London Heathrow on Tue, Oct 13, arriving in Billings.Price includes taxes and charges.From $756, select.
      London.$791 per passenger.Departing Fri, Apr 16, returning Fri, May 7.Round-trip flight with Alaska Airlines.Outbound indirect flight with Alaska Airlines, departing from Billings on Fri, Apr 16, arriving in London Heathrow.Inbound indirect flight with Alaska Airlines, departing from London Heathrow on Fri, May 7, arriving in Billings.Price includes taxes and charges.From $791, select.
      London.$881 per passenger.Departing Tue, Mar 2, returning Fri, Mar 5.Round-trip flight with Air France and KLM.Outbound indirect flight with Air France, departing from Billings on Tue, Mar 2, arriving in London Heathrow.Inbound indirect flight with KLM, departing from London Heathrow on Fri, Mar 5, arriving in Billings.Price includes taxes and charges.From $881, select.
      London.$1,361 per passenger.Departing Wed, Jun 23, returning Sat, Jul 3.Round-trip flight with United.Outbound indirect flight with United, departing from Billings on Wed, Jun 23, arriving in London Heathrow.Inbound indirect flight with United, departing from London Heathrow on Sat, Jul 3, arriving in Billings.Price includes taxes and charges.From $1,361, select.
      London.$1,372 per passenger.Departing Fri, Jun 4, returning Tue, Jun 29.Round-trip flight with Delta.Outbound indirect flight with Delta, departing from Billings on Fri, Jun 4, arriving in London Heathrow.Inbound indirect flight with Delta, departing from London Heathrow on Tue, Jun 29, arriving in Billings.Price includes taxes and charges.From $1,372, select.
      London.$1,701 per passenger.Departing Thu, Dec 17, returning Sun, Jan 3.Round-trip flight with Alaska Airlines and Brussels Airlines.Outbound indirect flight with Alaska Airlines, departing from Billings on Thu, Dec 17, arriving in London Heathrow.Inbound indirect flight with Brussels Airlines, departing from London Heathrow on Sun, Jan 3, arriving in Billings.Price includes taxes and charges.From $1,701, select.
      How did we find these deals? The deals you see here are the lowest prices for flight tickets from Billings to London Heathrow found in the last 4 days, and are subject to change and availability.

      Find the cheapest month to fly from Billings to London Heathrow

      We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Billings to London Heathrow flights are currently cheapest in November.
      Sep
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      Oct
      from $756
      Nov
      from $744
      Dec
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      Jan
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      Feb
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      Mar
      from $881
      Apr
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      May
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      Jun
      from $1,372
      Jul
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      Aug
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      Billings to London Heathrow: Alternative routes

      Compare routes from Billings to London below. You may find an airport to fly into that's cheaper, faster, or easier than London Heathrow.

      London City

      12km from central London
      Closest
      from $799
      Search flights

      London Heathrow

      23km from central London
      Cheapest
      from $741
      Search flights

      London Gatwick

      40km from central London
      from $1,066
      Search flights

      London Luton

      45km from central London
      from $1,087
      Search flights

      London Stansted

      49km from central London
      from $987
      Search flights

      London Southend

      57km from central London
      Search flights

      Billings to London: Flight information

      The things to know before you go.
      Cheapest flight found$741
      Cheapest month to flySeptember

      Finding cheap flights from Billings to London Heathrow: Frequently asked questions

      The best price we found for a round-trip flight from Billings to London Heathrow is $741. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
      Currently, there are no airlines that fly direct from Billings to London Heathrow. But we found flights with one or more stops from $741.
      There are no flights flying from Billings to London Heathrow, as of September 2026.
      The cheapest month to fly from Billings to London Heathrow is usually September.
      After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Billings Airport to London Heathrow Airport on Monday, September 28, 2026.
      No airlines currently offer direct flights between Billings Airport and London Heathrow Airport. Most routes have one or more stops.
      We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to London Heathrow but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

      We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to London is around 40 days in advance, so don’t leave your flight to the last minute.

      Currently, Alaska Airlines offers the cheapest flight tickets to London Heathrow.

      Flying from Billings Airport (BIL) to London Heathrow Airport (LHR): what you need to know

      • The timezone in London is UTC+0, which is seven hours ahead of Billings.

      • To ensure you catch your BIL to LHR flight, leave enough time to check in and drop off your luggage. Turning up two hours ahead of international departures and one hour before domestic flights is the general travel rule.

      • Be prepared for bigger queues in popular months like September. Arriving up to four hours in advance for international flights and two hours for domestic departures will give you ample time for security and boarding.

      • Think about adding a stopover when booking your ticket from Billings Airport to London Heathrow Airport. Just uncheck 'Direct flights only' to break up your journey, or perhaps explore a new destination along the way. Here's where you can stop between BIL and LHR:

        • Chicago O'Hare International Airport

        • Denver International Airport

        • Harry Reid International Airport

      How to find the cheapest flights from Billings Airport (BIL) to London Heathrow Airport (LHR)

      • $327 is the best price for a one-way Billings Airport to London Heathrow Airport flight. Return flights start from $741. These fares may change depending on demand and availability.

      • It's usually smart to book as early as possible if you want to find cheap tickets from BIL to LHR. That's because airlines adjust prices based on demand, which tends to increase closer to departure.

      • Finding cheap flights from Billings Airport to London Heathrow Airport is more likely if you're flexible with your trip dates. Use the 'Whole month' tool to see the lowest fares across the month and snap up a great deal.

      • Picking up cheap flights from BIL to LHR couldn't be easier with Price Alerts. All you need to do is create one of these automatic alerts and we'll get in touch as soon as there's a better deal.

      • Secure the perfect flight for you by using the filters. To see the 'Cheapest,' 'Best' or 'Fastest' flights from Billings Airport to London Heathrow Airport, use the 'Sort by' tool. You can also filter results by airline, arrival and departure times, and journey duration.

      Handy information about Billings Airport (BIL)

      • BIL is located at 1901 Terminal Circle, Room 216.

      • Billings Airport scores high marks for on-time performance. 84% of flights that take off from BIL arrive at their destination on time.

      • To get to Billings Airport from central Billings, it'll take about 15 minutes if you're going by car. Of course, this depends on traffic conditions. It's approximately 10 kilometers from the airport to the city center.

      • Planning to catch public transport? Expect a trip time of around 30 minutes.

      • Booked an early flight from Billings Airport to London Heathrow Airport? Avoid the stress of rushing to the airport (and sneak in some extra precious sleep) by picking one of these stays near BIL:

      Arriving at London Heathrow Airport (LHR)

      Getting from London Heathrow Airport (LHR) to central London

      • London Heathrow Airport is roughly 24 kilometers from the center of London. The drive time takes about 45 minutes.

      • Getting there on public transport will take you roughly 25 minutes.

      When to fly to London Heathrow Airport (LHR)

      • July is the busiest month for flights from Billings Airport to London Heathrow Airport. For a quieter experience, visit London in March.

      • Book your flight from Billings Airport to London Heathrow Airport for July if you want to explore London during its warmest month. Expect temperatures of between 11ºC (52ºF) and 26ºC (79ºF).

      • Search for cheap tickets from BIL to LHR in January if you like cooler conditions. Temperatures are at their lowest around then, ranging between 0ºC (32ºF) and 9ºC (48ºF) on average.

      Explore more of the United Kingdom

      • London has loads to offer, but there are so many other corners of the United Kingdom waiting to be explored. Around 257 kilometers north-west of London, a visit to Manchester will keep you on the go. Start with attractions like Manchester United Museum & Stadium Tour, The Homes of Football and Museum of Science and Industry.

      • Birmingham is another well-known destination in the United Kingdom and is around 161 kilometers north-west of London. No trip is complete without a visit to Birmingham Museum & Art Gallery, Birmingham Hippodrome Theatre and Bournville Experience.

      Plan the rest of your trip from Billings to London

      Prices shown on this page are estimated lowest prices only. Found in the last 12 days.